fix up a bunch of check-code warnings

doc/rst2man.py

@@ -1,1114 +1,1114 b''
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 # $Id: manpage.py 6110 2009-08-31 14:40:33Z grubert $
 # Author: Engelbert Gruber <[e-mail]>
 # Copyright: This module is put into the public domain.
 
 """
 Simple man page writer for reStructuredText.
 
 Man pages (short for "manual pages") contain system documentation on unix-like
 systems. The pages are grouped in numbered sections:
 
  1 executable programs and shell commands
  2 system calls
  3 library functions
  4 special files
  5 file formats
  6 games
  7 miscellaneous
  8 system administration
 
 Man pages are written *troff*, a text file formatting system.
 
 See http://www.tldp.org/HOWTO/Man-Page for a start.
 
 Man pages have no subsection only parts.
 Standard parts
 
   NAME ,
   SYNOPSIS ,
   DESCRIPTION ,
   OPTIONS ,
   FILES ,
   SEE ALSO ,
   BUGS ,
 
 and
 
   AUTHOR .
 
 A unix-like system keeps an index of the DESCRIPTIONs, which is accesable
 by the command whatis or apropos.
 
 """
 
 __docformat__ = 'reStructuredText'
 
 import sys
 import os
 import time
 import re
 from types import ListType
 
 import docutils
 from docutils import nodes, utils, writers, languages
 import roman
 
 FIELD_LIST_INDENT = 7
 DEFINITION_LIST_INDENT = 7
 OPTION_LIST_INDENT = 7
 BLOCKQOUTE_INDENT = 3.5
 
 # Define two macros so man/roff can calculate the
 # indent/unindent margins by itself
 MACRO_DEF = (r""".
 .nr rst2man-indent-level 0
 .
 .de1 rstReportMargin
 \\$1 \\n[an-margin]
 level \\n[rst2man-indent-level]
 level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 -
 \\n[rst2man-indent0]
 \\n[rst2man-indent1]
 \\n[rst2man-indent2]
 ..
 .de1 INDENT
 .\" .rstReportMargin pre:
 . RS \\$1
 . nr rst2man-indent\\n[rst2man-indent-level] \\n[an-margin]
 . nr rst2man-indent-level +1
 .\" .rstReportMargin post:
 ..
 .de UNINDENT
 . RE
 .\" indent \\n[an-margin]
 .\" old: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .nr rst2man-indent-level -1
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
 """)
 
 class Writer(writers.Writer):
 
     supported = ('manpage')
     """Formats this writer supports."""
 
     output = None
     """Final translated form of `document`."""
 
     def __init__(self):
         writers.Writer.__init__(self)
         self.translator_class = Translator
 
     def translate(self):
         visitor = self.translator_class(self.document)
         self.document.walkabout(visitor)
         self.output = visitor.astext()
 
 
 class Table:
     def __init__(self):
         self._rows = []
-        self._options = ['center',]
+        self._options = ['center']
         self._tab_char = '\t'
         self._coldefs = []
     def new_row(self):
         self._rows.append([])
     def append_separator(self, separator):
         """Append the separator for table head."""
         self._rows.append([separator])
     def append_cell(self, cell_lines):
         """cell_lines is an array of lines"""
         start = 0
         if len(cell_lines) > 0 and cell_lines[0] == '.sp\n':
             start = 1
         self._rows[-1].append(cell_lines[start:])
         if len(self._coldefs) < len(self._rows[-1]):
             self._coldefs.append('l')
     def _minimize_cell(self, cell_lines):
         """Remove leading and trailing blank and ``.sp`` lines"""
         while (cell_lines and cell_lines[0] in ('\n', '.sp\n')):
             del cell_lines[0]
         while (cell_lines and cell_lines[-1] in ('\n', '.sp\n')):
             del cell_lines[-1]
     def as_list(self):
         text = ['.TS\n']
         text.append(' '.join(self._options) + ';\n')
         text.append('|%s|.\n' % ('|'.join(self._coldefs)))
         for row in self._rows:
             # row = array of cells. cell = array of lines.
             text.append('_\n')       # line above
             text.append('T{\n')
             for i in range(len(row)):
                 cell = row[i]
                 self._minimize_cell(cell)
                 text.extend(cell)
                 if not text[-1].endswith('\n'):
                     text[-1] += '\n'
                 if i < len(row)-1:
                     text.append('T}'+self._tab_char+'T{\n')
                 else:
                     text.append('T}\n')
         text.append('_\n')
         text.append('.TE\n')
         return text
 
 class Translator(nodes.NodeVisitor):
     """"""
 
     words_and_spaces = re.compile(r'\S+| +|\n')
     document_start = """Man page generated from reStructeredText."""
 
     def __init__(self, document):
         nodes.NodeVisitor.__init__(self, document)
         self.settings = settings = document.settings
         lcode = settings.language_code
         self.language = languages.get_language(lcode)
         self.head = []
         self.body = []
         self.foot = []
         self.section_level = 0
         self.context = []
         self.topic_class = ''
         self.colspecs = []
         self.compact_p = 1
         self.compact_simple = None
         # the list style "*" bullet or "#" numbered
         self._list_char = []
         # writing the header .TH and .SH NAME is postboned after
         # docinfo.
         self._docinfo = {
                 "title" : "", "title_upper": "",
                 "subtitle" : "",
                 "manual_section" : "", "manual_group" : "",
                 "author" : [],
                 "date" : "",
                 "copyright" : "",
                 "version" : "",
                     }
         self._docinfo_keys = []     # a list to keep the sequence as in source.
         self._docinfo_names = {}    # to get name from text not normalized.
         self._in_docinfo = None
         self._active_table = None
         self._in_literal = False
         self.header_written = 0
         self._line_block = 0
         self.authors = []
         self.section_level = 0
         self._indent = [0]
         # central definition of simple processing rules
         # what to output on : visit, depart
         # Do not use paragraph requests ``.PP`` because these set indentation.
         # use ``.sp``. Remove superfluous ``.sp`` in ``astext``.
         #
         # Fonts are put on a stack, the top one is used.
         # ``.ft P`` or ``\\fP`` pop from stack.
         # ``B`` bold, ``I`` italic, ``R`` roman should be available.
         # Hopefully ``C`` courier too.
         self.defs = {
                 'indent' : ('.INDENT %.1f\n', '.UNINDENT\n'),
                 'definition_list_item' : ('.TP', ''),
                 'field_name' : ('.TP\n.B ', '\n'),
                 'literal' : ('\\fB', '\\fP'),
                 'literal_block' : ('.sp\n.nf\n.ft C\n', '\n.ft P\n.fi\n'),
 
                 'option_list_item' : ('.TP\n', ''),
 
                 'reference' : (r'\%', r'\:'),
                 'emphasis': ('\\fI', '\\fP'),
                 'strong' : ('\\fB', '\\fP'),
                 'term' : ('\n.B ', '\n'),
                 'title_reference' : ('\\fI', '\\fP'),
 
                 'topic-title' : ('.SS ',),
                 'sidebar-title' : ('.SS ',),
 
                 'problematic' : ('\n.nf\n', '\n.fi\n'),
                     }
         # NOTE don't specify the newline before a dot-command, but ensure
         # it is there.
 
     def comment_begin(self, text):
         """Return commented version of the passed text WITHOUT end of
         line/comment."""
         prefix = '.\\" '
         out_text = ''.join(
             [(prefix + in_line + '\n')
             for in_line in text.split('\n')])
         return out_text
 
     def comment(self, text):
         """Return commented version of the passed text."""
         return self.comment_begin(text)+'.\n'
 
     def ensure_eol(self):
         """Ensure the last line in body is terminated by new line."""
         if self.body[-1][-1] != '\n':
             self.body.append('\n')
 
     def astext(self):
         """Return the final formatted document as a string."""
         if not self.header_written:
             # ensure we get a ".TH" as viewers require it.
             self.head.append(self.header())
         # filter body
         for i in xrange(len(self.body)-1, 0, -1):
             # remove superfluous vertical gaps.
             if self.body[i] == '.sp\n':
                 if self.body[i - 1][:4] in ('.BI ','.IP '):
                     self.body[i] = '.\n'
                 elif (self.body[i - 1][:3] == '.B ' and
                     self.body[i - 2][:4] == '.TP\n'):
                     self.body[i] = '.\n'
                 elif (self.body[i - 1] == '\n' and
                     self.body[i - 2][0] != '.' and
                     (self.body[i - 3][:7] == '.TP\n.B '
                         or self.body[i - 3][:4] == '\n.B ')
                      ):
                     self.body[i] = '.\n'
         return ''.join(self.head + self.body + self.foot)
 
     def deunicode(self, text):
         text = text.replace(u'\xa0', '\\ ')
         text = text.replace(u'\u2020', '\\(dg')
         return text
 
     def visit_Text(self, node):
         text = node.astext()
         text = text.replace('\\','\\e')
         replace_pairs = [
             (u'-', ur'\-'),
             (u'\'', ur'\(aq'),
             (u'´', ur'\''),
             (u'`', ur'\(ga'),
             ]
         for (in_char, out_markup) in replace_pairs:
             text = text.replace(in_char, out_markup)
         # unicode
         text = self.deunicode(text)
         if self._in_literal:
             # prevent interpretation of "." at line start
             if text[0] == '.':
                 text = '\\&' + text
             text = text.replace('\n.', '\n\\&.')
         self.body.append(text)
 
     def depart_Text(self, node):
         pass
 
     def list_start(self, node):
         class enum_char:
             enum_style = {
                     'bullet'     : '\\(bu',
                     'emdash'     : '\\(em',
                      }
 
             def __init__(self, style):
                 self._style = style
                 if node.has_key('start'):
                     self._cnt = node['start'] - 1
                 else:
                     self._cnt = 0
                 self._indent = 2
                 if style == 'arabic':
                     # indentation depends on number of childrens
                     # and start value.
                     self._indent = len(str(len(node.children)))
                     self._indent += len(str(self._cnt)) + 1
                 elif style == 'loweralpha':
                     self._cnt += ord('a') - 1
                     self._indent = 3
                 elif style == 'upperalpha':
                     self._cnt += ord('A') - 1
                     self._indent = 3
                 elif style.endswith('roman'):
                     self._indent = 5
 
             def next(self):
                 if self._style == 'bullet':
                     return self.enum_style[self._style]
                 elif self._style == 'emdash':
                     return self.enum_style[self._style]
                 self._cnt += 1
                 # TODO add prefix postfix
                 if self._style == 'arabic':
                     return "%d." % self._cnt
                 elif self._style in ('loweralpha', 'upperalpha'):
                     return "%c." % self._cnt
                 elif self._style.endswith('roman'):
                     res = roman.toRoman(self._cnt) + '.'
                     if self._style.startswith('upper'):
                         return res.upper()
                     return res.lower()
                 else:
                     return "%d." % self._cnt
             def get_width(self):
                 return self._indent
             def __repr__(self):
                 return 'enum_style-%s' % list(self._style)
 
         if node.has_key('enumtype'):
             self._list_char.append(enum_char(node['enumtype']))
         else:
             self._list_char.append(enum_char('bullet'))
         if len(self._list_char) > 1:
             # indent nested lists
             self.indent(self._list_char[-2].get_width())
         else:
             self.indent(self._list_char[-1].get_width())
 
     def list_end(self):
         self.dedent()
         self._list_char.pop()
 
     def header(self):
         tmpl = (".TH %(title_upper)s %(manual_section)s"
                 " \"%(date)s\" \"%(version)s\" \"%(manual_group)s\"\n"
                 ".SH NAME\n"
                 "%(title)s \- %(subtitle)s\n")
         return tmpl % self._docinfo
 
     def append_header(self):
         """append header with .TH and .SH NAME"""
         # NOTE before everything
         # .TH title_upper section date source manual
         if self.header_written:
             return
         self.body.append(self.header())
         self.body.append(MACRO_DEF)
         self.header_written = 1
 
     def visit_address(self, node):
         self.visit_docinfo_item(node, 'address')
 
     def depart_address(self, node):
         pass
 
     def visit_admonition(self, node, name=None):
         if name:
             self.body.append('.IP %s\n' %
                         self.language.labels.get(name, name))
 
     def depart_admonition(self, node):
         self.body.append('.RE\n')
 
     def visit_attention(self, node):
         self.visit_admonition(node, 'attention')
 
     depart_attention = depart_admonition
 
     def visit_docinfo_item(self, node, name):
         if name == 'author':
             self._docinfo[name].append(node.astext())
         else:
             self._docinfo[name] = node.astext()
         self._docinfo_keys.append(name)
         raise nodes.SkipNode
 
     def depart_docinfo_item(self, node):
         pass
 
     def visit_author(self, node):
         self.visit_docinfo_item(node, 'author')
 
     depart_author = depart_docinfo_item
 
     def visit_authors(self, node):
         # _author is called anyway.
         pass
 
     def depart_authors(self, node):
         pass
 
     def visit_block_quote(self, node):
         # BUG/HACK: indent alway uses the _last_ indention,
         # thus we need two of them.
         self.indent(BLOCKQOUTE_INDENT)
         self.indent(0)
 
     def depart_block_quote(self, node):
         self.dedent()
         self.dedent()
 
     def visit_bullet_list(self, node):
         self.list_start(node)
 
     def depart_bullet_list(self, node):
         self.list_end()
 
     def visit_caption(self, node):
         pass
 
     def depart_caption(self, node):
         pass
 
     def visit_caution(self, node):
         self.visit_admonition(node, 'caution')
 
     depart_caution = depart_admonition
 
     def visit_citation(self, node):
         num, text = node.astext().split(None, 1)
         num = num.strip()
         self.body.append('.IP [%s] 5\n' % num)
 
     def depart_citation(self, node):
         pass
 
     def visit_citation_reference(self, node):
         self.body.append('['+node.astext()+']')
         raise nodes.SkipNode
 
     def visit_classifier(self, node):
         pass
 
     def depart_classifier(self, node):
         pass
 
     def visit_colspec(self, node):
         self.colspecs.append(node)
 
     def depart_colspec(self, node):
         pass
 
     def write_colspecs(self):
         self.body.append("%s.\n" % ('L '*len(self.colspecs)))
 
     def visit_comment(self, node,
                       sub=re.compile('-(?=-)').sub):
         self.body.append(self.comment(node.astext()))
         raise nodes.SkipNode
 
     def visit_contact(self, node):
         self.visit_docinfo_item(node, 'contact')
 
     depart_contact = depart_docinfo_item
 
     def visit_container(self, node):
         pass
 
     def depart_container(self, node):
         pass
 
     def visit_compound(self, node):
         pass
 
     def depart_compound(self, node):
         pass
 
     def visit_copyright(self, node):
         self.visit_docinfo_item(node, 'copyright')
 
     def visit_danger(self, node):
         self.visit_admonition(node, 'danger')
 
     depart_danger = depart_admonition
 
     def visit_date(self, node):
         self.visit_docinfo_item(node, 'date')
 
     def visit_decoration(self, node):
         pass
 
     def depart_decoration(self, node):
         pass
 
     def visit_definition(self, node):
         pass
 
     def depart_definition(self, node):
         pass
 
     def visit_definition_list(self, node):
         self.indent(DEFINITION_LIST_INDENT)
 
     def depart_definition_list(self, node):
         self.dedent()
 
     def visit_definition_list_item(self, node):
         self.body.append(self.defs['definition_list_item'][0])
 
     def depart_definition_list_item(self, node):
         self.body.append(self.defs['definition_list_item'][1])
 
     def visit_description(self, node):
         pass
 
     def depart_description(self, node):
         pass
 
     def visit_docinfo(self, node):
         self._in_docinfo = 1
 
     def depart_docinfo(self, node):
         self._in_docinfo = None
         # NOTE nothing should be written before this
         self.append_header()
 
     def visit_doctest_block(self, node):
         self.body.append(self.defs['literal_block'][0])
         self._in_literal = True
 
     def depart_doctest_block(self, node):
         self._in_literal = False
         self.body.append(self.defs['literal_block'][1])
 
     def visit_document(self, node):
         # no blank line between comment and header.
         self.body.append(self.comment(self.document_start).rstrip()+'\n')
         # writing header is postboned
         self.header_written = 0
 
     def depart_document(self, node):
         if self._docinfo['author']:
             self.body.append('.SH AUTHOR\n%s\n'
                     % ', '.join(self._docinfo['author']))
         skip = ('author', 'copyright', 'date',
                 'manual_group', 'manual_section',
                 'subtitle',
                 'title', 'title_upper', 'version')
         for name in self._docinfo_keys:
             if name == 'address':
                 self.body.append("\n%s:\n%s%s.nf\n%s\n.fi\n%s%s" % (
                                     self.language.labels.get(name, name),
                                     self.defs['indent'][0] % 0,
                                     self.defs['indent'][0] % BLOCKQOUTE_INDENT,
                                     self._docinfo[name],
                                     self.defs['indent'][1],
                                     self.defs['indent'][1]))
             elif not name in skip:
                 if name in self._docinfo_names:
                     label = self._docinfo_names[name]
                 else:
                     label = self.language.labels.get(name, name)
                 self.body.append("\n%s: %s\n" % (label, self._docinfo[name]))
         if self._docinfo['copyright']:
             self.body.append('.SH COPYRIGHT\n%s\n'
                     % self._docinfo['copyright'])
         self.body.append(self.comment(
                         'Generated by docutils manpage writer.\n'))
 
     def visit_emphasis(self, node):
         self.body.append(self.defs['emphasis'][0])
 
     def depart_emphasis(self, node):
         self.body.append(self.defs['emphasis'][1])
 
     def visit_entry(self, node):
         # a cell in a table row
         if 'morerows' in node:
             self.document.reporter.warning('"table row spanning" not supported',
                     base_node=node)
         if 'morecols' in node:
             self.document.reporter.warning(
                     '"table cell spanning" not supported', base_node=node)
         self.context.append(len(self.body))
 
     def depart_entry(self, node):
         start = self.context.pop()
         self._active_table.append_cell(self.body[start:])
         del self.body[start:]
 
     def visit_enumerated_list(self, node):
         self.list_start(node)
 
     def depart_enumerated_list(self, node):
         self.list_end()
 
     def visit_error(self, node):
         self.visit_admonition(node, 'error')
 
     depart_error = depart_admonition
 
     def visit_field(self, node):
         pass
 
     def depart_field(self, node):
         pass
 
     def visit_field_body(self, node):
         if self._in_docinfo:
             name_normalized = self._field_name.lower().replace(" ","_")
             self._docinfo_names[name_normalized] = self._field_name
             self.visit_docinfo_item(node, name_normalized)
             raise nodes.SkipNode
 
     def depart_field_body(self, node):
         pass
 
     def visit_field_list(self, node):
         self.indent(FIELD_LIST_INDENT)
 
     def depart_field_list(self, node):
         self.dedent()
 
     def visit_field_name(self, node):
         if self._in_docinfo:
             self._field_name = node.astext()
             raise nodes.SkipNode
         else:
             self.body.append(self.defs['field_name'][0])
 
     def depart_field_name(self, node):
         self.body.append(self.defs['field_name'][1])
 
     def visit_figure(self, node):
         self.indent(2.5)
         self.indent(0)
 
     def depart_figure(self, node):
         self.dedent()
         self.dedent()
 
     def visit_footer(self, node):
         self.document.reporter.warning('"footer" not supported',
                 base_node=node)
 
     def depart_footer(self, node):
         pass
 
     def visit_footnote(self, node):
         num, text = node.astext().split(None, 1)
         num = num.strip()
         self.body.append('.IP [%s] 5\n' % self.deunicode(num))
 
     def depart_footnote(self, node):
         pass
 
     def footnote_backrefs(self, node):
         self.document.reporter.warning('"footnote_backrefs" not supported',
                 base_node=node)
 
     def visit_footnote_reference(self, node):
         self.body.append('['+self.deunicode(node.astext())+']')
         raise nodes.SkipNode
 
     def depart_footnote_reference(self, node):
         pass
 
     def visit_generated(self, node):
         pass
 
     def depart_generated(self, node):
         pass
 
     def visit_header(self, node):
         raise NotImplementedError, node.astext()
 
     def depart_header(self, node):
         pass
 
     def visit_hint(self, node):
         self.visit_admonition(node, 'hint')
 
     depart_hint = depart_admonition
 
     def visit_subscript(self, node):
         self.body.append('\\s-2\\d')
 
     def depart_subscript(self, node):
         self.body.append('\\u\\s0')
 
     def visit_superscript(self, node):
         self.body.append('\\s-2\\u')
 
     def depart_superscript(self, node):
         self.body.append('\\d\\s0')
 
     def visit_attribution(self, node):
         self.body.append('\\(em ')
 
     def depart_attribution(self, node):
         self.body.append('\n')
 
     def visit_image(self, node):
         self.document.reporter.warning('"image" not supported',
                 base_node=node)
         text = []
         if 'alt' in node.attributes:
             text.append(node.attributes['alt'])
         if 'uri' in node.attributes:
             text.append(node.attributes['uri'])
         self.body.append('[image: %s]\n' % ('/'.join(text)))
         raise nodes.SkipNode
 
     def visit_important(self, node):
         self.visit_admonition(node, 'important')
 
     depart_important = depart_admonition
 
     def visit_label(self, node):
         # footnote and citation
         if (isinstance(node.parent, nodes.footnote)
             or isinstance(node.parent, nodes.citation)):
             raise nodes.SkipNode
         self.document.reporter.warning('"unsupported "label"',
                 base_node=node)
         self.body.append('[')
 
     def depart_label(self, node):
         self.body.append(']\n')
 
     def visit_legend(self, node):
         pass
 
     def depart_legend(self, node):
         pass
 
     # WHAT should we use .INDENT, .UNINDENT ?
     def visit_line_block(self, node):
         self._line_block += 1
         if self._line_block == 1:
             self.body.append('.sp\n')
             self.body.append('.nf\n')
         else:
             self.body.append('.in +2\n')
 
     def depart_line_block(self, node):
         self._line_block -= 1
         if self._line_block == 0:
             self.body.append('.fi\n')
             self.body.append('.sp\n')
         else:
             self.body.append('.in -2\n')
 
     def visit_line(self, node):
         pass
 
     def depart_line(self, node):
         self.body.append('\n')
 
     def visit_list_item(self, node):
         # man 7 man argues to use ".IP" instead of ".TP"
         self.body.append('.IP %s %d\n' % (
                 self._list_char[-1].next(),
                 self._list_char[-1].get_width(),))
 
     def depart_list_item(self, node):
         pass
 
     def visit_literal(self, node):
         self.body.append(self.defs['literal'][0])
 
     def depart_literal(self, node):
         self.body.append(self.defs['literal'][1])
 
     def visit_literal_block(self, node):
         self.body.append(self.defs['literal_block'][0])
         self._in_literal = True
 
     def depart_literal_block(self, node):
         self._in_literal = False
         self.body.append(self.defs['literal_block'][1])
 
     def visit_meta(self, node):
         raise NotImplementedError, node.astext()
 
     def depart_meta(self, node):
         pass
 
     def visit_note(self, node):
         self.visit_admonition(node, 'note')
 
     depart_note = depart_admonition
 
     def indent(self, by=0.5):
         # if we are in a section ".SH" there already is a .RS
         step = self._indent[-1]
         self._indent.append(by)
         self.body.append(self.defs['indent'][0] % step)
 
     def dedent(self):
         self._indent.pop()
         self.body.append(self.defs['indent'][1])
 
     def visit_option_list(self, node):
         self.indent(OPTION_LIST_INDENT)
 
     def depart_option_list(self, node):
         self.dedent()
 
     def visit_option_list_item(self, node):
         # one item of the list
         self.body.append(self.defs['option_list_item'][0])
 
     def depart_option_list_item(self, node):
         self.body.append(self.defs['option_list_item'][1])
 
     def visit_option_group(self, node):
         # as one option could have several forms it is a group
         # options without parameter bold only, .B, -v
         # options with parameter bold italic, .BI, -f file
         #
         # we do not know if .B or .BI
         self.context.append('.B')           # blind guess
         self.context.append(len(self.body)) # to be able to insert later
         self.context.append(0)              # option counter
 
     def depart_option_group(self, node):
         self.context.pop()  # the counter
         start_position = self.context.pop()
         text = self.body[start_position:]
         del self.body[start_position:]
         self.body.append('%s%s\n' % (self.context.pop(), ''.join(text)))
 
     def visit_option(self, node):
         # each form of the option will be presented separately
         if self.context[-1] > 0:
             self.body.append(', ')
         if self.context[-3] == '.BI':
             self.body.append('\\')
         self.body.append(' ')
 
     def depart_option(self, node):
         self.context[-1] += 1
 
     def visit_option_string(self, node):
         # do not know if .B or .BI
         pass
 
     def depart_option_string(self, node):
         pass
 
     def visit_option_argument(self, node):
         self.context[-3] = '.BI' # bold/italic alternate
         if node['delimiter'] != ' ':
             self.body.append('\\fB%s ' % node['delimiter'])
         elif self.body[len(self.body)-1].endswith('='):
             # a blank only means no blank in output, just changing font
             self.body.append(' ')
         else:
             # blank backslash blank, switch font then a blank
             self.body.append(' \\ ')
 
     def depart_option_argument(self, node):
         pass
 
     def visit_organization(self, node):
         self.visit_docinfo_item(node, 'organization')
 
     def depart_organization(self, node):
         pass
 
     def visit_paragraph(self, node):
         # ``.PP`` : Start standard indented paragraph.
         # ``.LP`` : Start block paragraph, all except the first.
         # ``.P [type]``  : Start paragraph type.
         # NOTE dont use paragraph starts because they reset indentation.
         # ``.sp`` is only vertical space
         self.ensure_eol()
         self.body.append('.sp\n')
 
     def depart_paragraph(self, node):
         self.body.append('\n')
 
     def visit_problematic(self, node):
         self.body.append(self.defs['problematic'][0])
 
     def depart_problematic(self, node):
         self.body.append(self.defs['problematic'][1])
 
     def visit_raw(self, node):
         if node.get('format') == 'manpage':
             self.body.append(node.astext() + "\n")
         # Keep non-manpage raw text out of output:
         raise nodes.SkipNode
 
     def visit_reference(self, node):
         """E.g. link or email address."""
         self.body.append(self.defs['reference'][0])
 
     def depart_reference(self, node):
         self.body.append(self.defs['reference'][1])
 
     def visit_revision(self, node):
         self.visit_docinfo_item(node, 'revision')
 
     depart_revision = depart_docinfo_item
 
     def visit_row(self, node):
         self._active_table.new_row()
 
     def depart_row(self, node):
         pass
 
     def visit_section(self, node):
         self.section_level += 1
 
     def depart_section(self, node):
         self.section_level -= 1
 
     def visit_status(self, node):
         self.visit_docinfo_item(node, 'status')
 
     depart_status = depart_docinfo_item
 
     def visit_strong(self, node):
         self.body.append(self.defs['strong'][0])
 
     def depart_strong(self, node):
         self.body.append(self.defs['strong'][1])
 
     def visit_substitution_definition(self, node):
         """Internal only."""
         raise nodes.SkipNode
 
     def visit_substitution_reference(self, node):
         self.document.reporter.warning('"substitution_reference" not supported',
                 base_node=node)
 
     def visit_subtitle(self, node):
         if isinstance(node.parent, nodes.sidebar):
             self.body.append(self.defs['strong'][0])
         elif isinstance(node.parent, nodes.document):
             self.visit_docinfo_item(node, 'subtitle')
         elif isinstance(node.parent, nodes.section):
             self.body.append(self.defs['strong'][0])
 
     def depart_subtitle(self, node):
         # document subtitle calls SkipNode
         self.body.append(self.defs['strong'][1]+'\n.PP\n')
 
     def visit_system_message(self, node):
         # TODO add report_level
         #if node['level'] < self.document.reporter['writer'].report_level:
         #    Level is too low to display:
         #    raise nodes.SkipNode
         attr = {}
         backref_text = ''
         if node.hasattr('id'):
             attr['name'] = node['id']
         if node.hasattr('line'):
             line = ', line %s' % node['line']
         else:
             line = ''
         self.body.append('.IP "System Message: %s/%s (%s:%s)"\n'
                          % (node['type'], node['level'], node['source'], line))
 
     def depart_system_message(self, node):
         pass
 
     def visit_table(self, node):
         self._active_table = Table()
 
     def depart_table(self, node):
         self.ensure_eol()
         self.body.extend(self._active_table.as_list())
         self._active_table = None
 
     def visit_target(self, node):
         # targets are in-document hyper targets, without any use for man-pages.
         raise nodes.SkipNode
 
     def visit_tbody(self, node):
         pass
 
     def depart_tbody(self, node):
         pass
 
     def visit_term(self, node):
         self.body.append(self.defs['term'][0])
 
     def depart_term(self, node):
         self.body.append(self.defs['term'][1])
 
     def visit_tgroup(self, node):
         pass
 
     def depart_tgroup(self, node):
         pass
 
     def visit_thead(self, node):
         # MAYBE double line '='
         pass
 
     def depart_thead(self, node):
         # MAYBE double line '='
         pass
 
     def visit_tip(self, node):
         self.visit_admonition(node, 'tip')
 
     depart_tip = depart_admonition
 
     def visit_title(self, node):
         if isinstance(node.parent, nodes.topic):
             self.body.append(self.defs['topic-title'][0])
         elif isinstance(node.parent, nodes.sidebar):
             self.body.append(self.defs['sidebar-title'][0])
         elif isinstance(node.parent, nodes.admonition):
             self.body.append('.IP "')
         elif self.section_level == 0:
             self._docinfo['title'] = node.astext()
             # document title for .TH
             self._docinfo['title_upper'] = node.astext().upper()
             raise nodes.SkipNode
         elif self.section_level == 1:
             self.body.append('.SH ')
             for n in node.traverse(nodes.Text):
                 n.parent.replace(n, nodes.Text(n.astext().upper()))
         else:
             self.body.append('.SS ')
 
     def depart_title(self, node):
         if isinstance(node.parent, nodes.admonition):
             self.body.append('"')
         self.body.append('\n')
 
     def visit_title_reference(self, node):
         """inline citation reference"""
         self.body.append(self.defs['title_reference'][0])
 
     def depart_title_reference(self, node):
         self.body.append(self.defs['title_reference'][1])
 
     def visit_topic(self, node):
         pass
 
     def depart_topic(self, node):
         pass
 
     def visit_sidebar(self, node):
         pass
 
     def depart_sidebar(self, node):
         pass
 
     def visit_rubric(self, node):
         pass
 
     def depart_rubric(self, node):
         pass
 
     def visit_transition(self, node):
         # .PP      Begin a new paragraph and reset prevailing indent.
         # .sp N    leaves N lines of blank space.
         # .ce      centers the next line
         self.body.append('\n.sp\n.ce\n----\n')
 
     def depart_transition(self, node):
         self.body.append('\n.ce 0\n.sp\n')
 
     def visit_version(self, node):
         self.visit_docinfo_item(node, 'version')
 
     def visit_warning(self, node):
         self.visit_admonition(node, 'warning')
 
     depart_warning = depart_admonition
 
     def unimplemented_visit(self, node):
         raise NotImplementedError('visiting unimplemented node type: %s'
                                   % node.__class__.__name__)
 
 # The following part is taken from the Docutils rst2man.py script:
 if __name__ == "__main__":
     from docutils.core import publish_cmdline, default_description
     description = ("Generates plain unix manual documents.  " +
                    default_description)
     publish_cmdline(writer=Writer(), description=description)
 
 # vim: set fileencoding=utf-8 et ts=4 ai :

hgext/mq.py

@@ -1,2822 +1,2823 b''
 # mq.py - patch queues for mercurial
 #
 # Copyright 2005, 2006 Chris Mason <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 '''manage a stack of patches
 
 This extension lets you work with a stack of patches in a Mercurial
 repository. It manages two stacks of patches - all known patches, and
 applied patches (subset of known patches).
 
 Known patches are represented as patch files in the .hg/patches
 directory. Applied patches are both patch files and changesets.
 
 Common tasks (use "hg help command" for more details)::
 
   prepare repository to work with patches   qinit
   create new patch                          qnew
   import existing patch                     qimport
 
   print patch series                        qseries
   print applied patches                     qapplied
 
   add known patch to applied stack          qpush
   remove patch from applied stack           qpop
   refresh contents of top applied patch     qrefresh
 
 By default, mq will automatically use git patches when required to
 avoid losing file mode changes, copy records, binary files or empty
 files creations or deletions. This behaviour can be configured with::
 
   [mq]
   git = auto/keep/yes/no
 
 If set to 'keep', mq will obey the [diff] section configuration while
 preserving existing git patches upon qrefresh. If set to 'yes' or
 'no', mq will override the [diff] section and always generate git or
 regular patches, possibly losing data in the second case.
 '''
 
 from mercurial.i18n import _
 from mercurial.node import bin, hex, short, nullid, nullrev
 from mercurial.lock import release
 from mercurial import commands, cmdutil, hg, patch, util
 from mercurial import repair, extensions, url, error
 import os, sys, re, errno
 
 commands.norepo += " qclone"
 
 # Patch names looks like unix-file names.
 # They must be joinable with queue directory and result in the patch path.
 normname = util.normpath
 
 class statusentry(object):
     def __init__(self, rev, name=None):
         if not name:
             fields = rev.split(':', 1)
             if len(fields) == 2:
                 self.rev, self.name = fields
             else:
                 self.rev, self.name = None, None
         else:
             self.rev, self.name = rev, name
 
     def __str__(self):
         return self.rev + ':' + self.name
 
 class patchheader(object):
     def __init__(self, pf, plainmode=False):
         def eatdiff(lines):
             while lines:
                 l = lines[-1]
                 if (l.startswith("diff -") or
                     l.startswith("Index:") or
                     l.startswith("===========")):
                     del lines[-1]
                 else:
                     break
         def eatempty(lines):
             while lines:
                 l = lines[-1]
                 if re.match('\s*$', l):
                     del lines[-1]
                 else:
                     break
 
         message = []
         comments = []
         user = None
         date = None
         parent = None
         format = None
         subject = None
         diffstart = 0
 
         for line in file(pf):
             line = line.rstrip()
             if line.startswith('diff --git'):
                 diffstart = 2
                 break
             if diffstart:
                 if line.startswith('+++ '):
                     diffstart = 2
                 break
             if line.startswith("--- "):
                 diffstart = 1
                 continue
             elif format == "hgpatch":
                 # parse values when importing the result of an hg export
                 if line.startswith("# User "):
                     user = line[7:]
                 elif line.startswith("# Date "):
                     date = line[7:]
                 elif line.startswith("# Parent "):
                     parent = line[9:]
                 elif not line.startswith("# ") and line:
                     message.append(line)
                     format = None
             elif line == '# HG changeset patch':
                 message = []
                 format = "hgpatch"
             elif (format != "tagdone" and (line.startswith("Subject: ") or
                                            line.startswith("subject: "))):
                 subject = line[9:]
                 format = "tag"
             elif (format != "tagdone" and (line.startswith("From: ") or
                                            line.startswith("from: "))):
                 user = line[6:]
                 format = "tag"
             elif (format != "tagdone" and (line.startswith("Date: ") or
                                            line.startswith("date: "))):
                 date = line[6:]
                 format = "tag"
             elif format == "tag" and line == "":
                 # when looking for tags (subject: from: etc) they
                 # end once you find a blank line in the source
                 format = "tagdone"
             elif message or line:
                 message.append(line)
             comments.append(line)
 
         eatdiff(message)
         eatdiff(comments)
         eatempty(message)
         eatempty(comments)
 
         # make sure message isn't empty
         if format and format.startswith("tag") and subject:
             message.insert(0, "")
             message.insert(0, subject)
 
         self.message = message
         self.comments = comments
         self.user = user
         self.date = date
         self.parent = parent
         self.haspatch = diffstart > 1
         self.plainmode = plainmode
 
     def setuser(self, user):
         if not self.updateheader(['From: ', '# User '], user):
             try:
                 patchheaderat = self.comments.index('# HG changeset patch')
                 self.comments.insert(patchheaderat + 1, '# User ' + user)
             except ValueError:
                 if self.plainmode or self._hasheader(['Date: ']):
                     self.comments = ['From: ' + user] + self.comments
                 else:
                     tmp = ['# HG changeset patch', '# User ' + user, '']
                     self.comments = tmp + self.comments
         self.user = user
 
     def setdate(self, date):
         if not self.updateheader(['Date: ', '# Date '], date):
             try:
                 patchheaderat = self.comments.index('# HG changeset patch')
                 self.comments.insert(patchheaderat + 1, '# Date ' + date)
             except ValueError:
                 if self.plainmode or self._hasheader(['From: ']):
                     self.comments = ['Date: ' + date] + self.comments
                 else:
                     tmp = ['# HG changeset patch', '# Date ' + date, '']
                     self.comments = tmp + self.comments
         self.date = date
 
     def setparent(self, parent):
         if not self.updateheader(['# Parent '], parent):
             try:
                 patchheaderat = self.comments.index('# HG changeset patch')
                 self.comments.insert(patchheaderat + 1, '# Parent ' + parent)
             except ValueError:
                 pass
         self.parent = parent
 
     def setmessage(self, message):
         if self.comments:
             self._delmsg()
         self.message = [message]
         self.comments += self.message
 
     def updateheader(self, prefixes, new):
         '''Update all references to a field in the patch header.
         Return whether the field is present.'''
         res = False
         for prefix in prefixes:
             for i in xrange(len(self.comments)):
                 if self.comments[i].startswith(prefix):
                     self.comments[i] = prefix + new
                     res = True
                     break
         return res
 
     def _hasheader(self, prefixes):
         '''Check if a header starts with any of the given prefixes.'''
         for prefix in prefixes:
             for comment in self.comments:
                 if comment.startswith(prefix):
                     return True
         return False
 
     def __str__(self):
         if not self.comments:
             return ''
         return '\n'.join(self.comments) + '\n\n'
 
     def _delmsg(self):
         '''Remove existing message, keeping the rest of the comments fields.
         If comments contains 'subject: ', message will prepend
         the field and a blank line.'''
         if self.message:
             subj = 'subject: ' + self.message[0].lower()
             for i in xrange(len(self.comments)):
                 if subj == self.comments[i].lower():
                     del self.comments[i]
                     self.message = self.message[2:]
                     break
         ci = 0
         for mi in self.message:
             while mi != self.comments[ci]:
                 ci += 1
             del self.comments[ci]
 
 class queue(object):
     def __init__(self, ui, path, patchdir=None):
         self.basepath = path
         self.path = patchdir or os.path.join(path, "patches")
         self.opener = util.opener(self.path)
         self.ui = ui
         self.applied_dirty = 0
         self.series_dirty = 0
         self.series_path = "series"
         self.status_path = "status"
         self.guards_path = "guards"
         self.active_guards = None
         self.guards_dirty = False
         # Handle mq.git as a bool with extended values
         try:
             gitmode = ui.configbool('mq', 'git', None)
             if gitmode is None:
                 raise error.ConfigError()
             self.gitmode = gitmode and 'yes' or 'no'
         except error.ConfigError:
             self.gitmode = ui.config('mq', 'git', 'auto').lower()
         self.plainmode = ui.configbool('mq', 'plain', False)
 
     @util.propertycache
     def applied(self):
         if os.path.exists(self.join(self.status_path)):
             lines = self.opener(self.status_path).read().splitlines()
             return [statusentry(l) for l in lines]
         return []
 
     @util.propertycache
     def full_series(self):
         if os.path.exists(self.join(self.series_path)):
             return self.opener(self.series_path).read().splitlines()
         return []
 
     @util.propertycache
     def series(self):
         self.parse_series()
         return self.series
 
     @util.propertycache
     def series_guards(self):
         self.parse_series()
         return self.series_guards
 
     def invalidate(self):
         for a in 'applied full_series series series_guards'.split():
             if a in self.__dict__:
                 delattr(self, a)
         self.applied_dirty = 0
         self.series_dirty = 0
         self.guards_dirty = False
         self.active_guards = None
 
     def diffopts(self, opts={}, patchfn=None):
         diffopts = patch.diffopts(self.ui, opts)
         if self.gitmode == 'auto':
             diffopts.upgrade = True
         elif self.gitmode == 'keep':
             pass
         elif self.gitmode in ('yes', 'no'):
             diffopts.git = self.gitmode == 'yes'
         else:
             raise util.Abort(_('mq.git option can be auto/keep/yes/no'
                                ' got %s') % self.gitmode)
         if patchfn:
             diffopts = self.patchopts(diffopts, patchfn)
         return diffopts
 
     def patchopts(self, diffopts, *patches):
         """Return a copy of input diff options with git set to true if
         referenced patch is a git patch and should be preserved as such.
         """
         diffopts = diffopts.copy()
         if not diffopts.git and self.gitmode == 'keep':
             for patchfn in patches:
                 patchf = self.opener(patchfn, 'r')
                 # if the patch was a git patch, refresh it as a git patch
                 for line in patchf:
                     if line.startswith('diff --git'):
                         diffopts.git = True
                         break
                 patchf.close()
         return diffopts
 
     def join(self, *p):
         return os.path.join(self.path, *p)
 
     def find_series(self, patch):
         pre = re.compile("(\s*)([^#]+)")
         index = 0
         for l in self.full_series:
             m = pre.match(l)
             if m:
                 s = m.group(2)
                 s = s.rstrip()
                 if s == patch:
                     return index
             index += 1
         return None
 
     guard_re = re.compile(r'\s?#([-+][^-+# \t\r\n\f][^# \t\r\n\f]*)')
 
     def parse_series(self):
         self.series = []
         self.series_guards = []
         for l in self.full_series:
             h = l.find('#')
             if h == -1:
                 patch = l
                 comment = ''
             elif h == 0:
                 continue
             else:
                 patch = l[:h]
                 comment = l[h:]
             patch = patch.strip()
             if patch:
                 if patch in self.series:
                     raise util.Abort(_('%s appears more than once in %s') %
                                      (patch, self.join(self.series_path)))
                 self.series.append(patch)
                 self.series_guards.append(self.guard_re.findall(comment))
 
     def check_guard(self, guard):
         if not guard:
             return _('guard cannot be an empty string')
         bad_chars = '# \t\r\n\f'
         first = guard[0]
         if first in '-+':
             return (_('guard %r starts with invalid character: %r') %
                       (guard, first))
         for c in bad_chars:
             if c in guard:
                 return _('invalid character in guard %r: %r') % (guard, c)
 
     def set_active(self, guards):
         for guard in guards:
             bad = self.check_guard(guard)
             if bad:
                 raise util.Abort(bad)
         guards = sorted(set(guards))
         self.ui.debug('active guards: %s\n' % ' '.join(guards))
         self.active_guards = guards
         self.guards_dirty = True
 
     def active(self):
         if self.active_guards is None:
             self.active_guards = []
             try:
                 guards = self.opener(self.guards_path).read().split()
             except IOError, err:
                 if err.errno != errno.ENOENT:
                     raise
                 guards = []
             for i, guard in enumerate(guards):
                 bad = self.check_guard(guard)
                 if bad:
                     self.ui.warn('%s:%d: %s\n' %
                                  (self.join(self.guards_path), i + 1, bad))
                 else:
                     self.active_guards.append(guard)
         return self.active_guards
 
     def set_guards(self, idx, guards):
         for g in guards:
             if len(g) < 2:
                 raise util.Abort(_('guard %r too short') % g)
             if g[0] not in '-+':
                 raise util.Abort(_('guard %r starts with invalid char') % g)
             bad = self.check_guard(g[1:])
             if bad:
                 raise util.Abort(bad)
         drop = self.guard_re.sub('', self.full_series[idx])
         self.full_series[idx] = drop + ''.join([' #' + g for g in guards])
         self.parse_series()
         self.series_dirty = True
 
     def pushable(self, idx):
         if isinstance(idx, str):
             idx = self.series.index(idx)
         patchguards = self.series_guards[idx]
         if not patchguards:
             return True, None
         guards = self.active()
         exactneg = [g for g in patchguards if g[0] == '-' and g[1:] in guards]
         if exactneg:
             return False, exactneg[0]
         pos = [g for g in patchguards if g[0] == '+']
         exactpos = [g for g in pos if g[1:] in guards]
         if pos:
             if exactpos:
                 return True, exactpos[0]
             return False, pos
         return True, ''
 
     def explain_pushable(self, idx, all_patches=False):
         write = all_patches and self.ui.write or self.ui.warn
         if all_patches or self.ui.verbose:
             if isinstance(idx, str):
                 idx = self.series.index(idx)
             pushable, why = self.pushable(idx)
             if all_patches and pushable:
                 if why is None:
                     write(_('allowing %s - no guards in effect\n') %
                           self.series[idx])
                 else:
                     if not why:
                         write(_('allowing %s - no matching negative guards\n') %
                               self.series[idx])
                     else:
                         write(_('allowing %s - guarded by %r\n') %
                               (self.series[idx], why))
             if not pushable:
                 if why:
                     write(_('skipping %s - guarded by %r\n') %
                           (self.series[idx], why))
                 else:
                     write(_('skipping %s - no matching guards\n') %
                           self.series[idx])
 
     def save_dirty(self):
         def write_list(items, path):
             fp = self.opener(path, 'w')
             for i in items:
                 fp.write("%s\n" % i)
             fp.close()
         if self.applied_dirty:
             write_list(map(str, self.applied), self.status_path)
         if self.series_dirty:
             write_list(self.full_series, self.series_path)
         if self.guards_dirty:
             write_list(self.active_guards, self.guards_path)
 
     def removeundo(self, repo):
         undo = repo.sjoin('undo')
         if not os.path.exists(undo):
             return
         try:
             os.unlink(undo)
         except OSError, inst:
             self.ui.warn(_('error removing undo: %s\n') % str(inst))
 
     def printdiff(self, repo, diffopts, node1, node2=None, files=None,
                   fp=None, changes=None, opts={}):
         stat = opts.get('stat')
         if stat:
             opts['unified'] = '0'
 
         m = cmdutil.match(repo, files, opts)
         chunks = patch.diff(repo, node1, node2, m, changes, diffopts)
         write = fp is None and repo.ui.write or fp.write
         if stat:
             width = self.ui.interactive() and util.termwidth() or 80
             write(patch.diffstat(util.iterlines(chunks), width=width,
                                  git=diffopts.git))
         else:
             for chunk in chunks:
                 write(chunk)
 
     def mergeone(self, repo, mergeq, head, patch, rev, diffopts):
         # first try just applying the patch
         (err, n) = self.apply(repo, [patch], update_status=False,
                               strict=True, merge=rev)
 
         if err == 0:
             return (err, n)
 
         if n is None:
             raise util.Abort(_("apply failed for patch %s") % patch)
 
         self.ui.warn(_("patch didn't work out, merging %s\n") % patch)
 
         # apply failed, strip away that rev and merge.
         hg.clean(repo, head)
         self.strip(repo, n, update=False, backup='strip')
 
         ctx = repo[rev]
         ret = hg.merge(repo, rev)
         if ret:
             raise util.Abort(_("update returned %d") % ret)
         n = repo.commit(ctx.description(), ctx.user(), force=True)
         if n is None:
             raise util.Abort(_("repo commit failed"))
         try:
             ph = patchheader(mergeq.join(patch), self.plainmode)
         except:
             raise util.Abort(_("unable to read %s") % patch)
 
         diffopts = self.patchopts(diffopts, patch)
         patchf = self.opener(patch, "w")
         comments = str(ph)
         if comments:
             patchf.write(comments)
         self.printdiff(repo, diffopts, head, n, fp=patchf)
         patchf.close()
         self.removeundo(repo)
         return (0, n)
 
     def qparents(self, repo, rev=None):
         if rev is None:
             (p1, p2) = repo.dirstate.parents()
             if p2 == nullid:
                 return p1
             if len(self.applied) == 0:
                 return None
             return bin(self.applied[-1].rev)
         pp = repo.changelog.parents(rev)
         if pp[1] != nullid:
             arevs = [x.rev for x in self.applied]
             p0 = hex(pp[0])
             p1 = hex(pp[1])
             if p0 in arevs:
                 return pp[0]
             if p1 in arevs:
                 return pp[1]
         return pp[0]
 
     def mergepatch(self, repo, mergeq, series, diffopts):
         if len(self.applied) == 0:
             # each of the patches merged in will have two parents.  This
             # can confuse the qrefresh, qdiff, and strip code because it
             # needs to know which parent is actually in the patch queue.
             # so, we insert a merge marker with only one parent.  This way
             # the first patch in the queue is never a merge patch
             #
             pname = ".hg.patches.merge.marker"
             n = repo.commit('[mq]: merge marker', force=True)
             self.removeundo(repo)
             self.applied.append(statusentry(hex(n), pname))
             self.applied_dirty = 1
 
         head = self.qparents(repo)
 
         for patch in series:
             patch = mergeq.lookup(patch, strict=True)
             if not patch:
                 self.ui.warn(_("patch %s does not exist\n") % patch)
                 return (1, None)
             pushable, reason = self.pushable(patch)
             if not pushable:
                 self.explain_pushable(patch, all_patches=True)
                 continue
             info = mergeq.isapplied(patch)
             if not info:
                 self.ui.warn(_("patch %s is not applied\n") % patch)
                 return (1, None)
             rev = bin(info[1])
             err, head = self.mergeone(repo, mergeq, head, patch, rev, diffopts)
             if head:
                 self.applied.append(statusentry(hex(head), patch))
                 self.applied_dirty = 1
             if err:
                 return (err, head)
         self.save_dirty()
         return (0, head)
 
     def patch(self, repo, patchfile):
         '''Apply patchfile  to the working directory.
         patchfile: name of patch file'''
         files = {}
         try:
             fuzz = patch.patch(patchfile, self.ui, strip=1, cwd=repo.root,
                                files=files, eolmode=None)
         except Exception, inst:
             self.ui.note(str(inst) + '\n')
             if not self.ui.verbose:
                 self.ui.warn(_("patch failed, unable to continue (try -v)\n"))
             return (False, files, False)
 
         return (True, files, fuzz)
 
     def apply(self, repo, series, list=False, update_status=True,
               strict=False, patchdir=None, merge=None, all_files={}):
         wlock = lock = tr = None
         try:
             wlock = repo.wlock()
             lock = repo.lock()
             tr = repo.transaction()
             try:
                 ret = self._apply(repo, series, list, update_status,
                                   strict, patchdir, merge, all_files=all_files)
                 tr.close()
                 self.save_dirty()
                 return ret
             except:
                 try:
                     tr.abort()
                 finally:
                     repo.invalidate()
                     repo.dirstate.invalidate()
                 raise
         finally:
             del tr
             release(lock, wlock)
             self.removeundo(repo)
 
     def _apply(self, repo, series, list=False, update_status=True,
                strict=False, patchdir=None, merge=None, all_files={}):
         '''returns (error, hash)
         error = 1 for unable to read, 2 for patch failed, 3 for patch fuzz'''
         # TODO unify with commands.py
         if not patchdir:
             patchdir = self.path
         err = 0
         n = None
         for patchname in series:
             pushable, reason = self.pushable(patchname)
             if not pushable:
                 self.explain_pushable(patchname, all_patches=True)
                 continue
             self.ui.status(_("applying %s\n") % patchname)
             pf = os.path.join(patchdir, patchname)
 
             try:
                 ph = patchheader(self.join(patchname), self.plainmode)
             except:
                 self.ui.warn(_("unable to read %s\n") % patchname)
                 err = 1
                 break
 
             message = ph.message
             if not message:
                 message = "imported patch %s\n" % patchname
             else:
                 if list:
                     message.append("\nimported patch %s" % patchname)
                 message = '\n'.join(message)
 
             if ph.haspatch:
                 (patcherr, files, fuzz) = self.patch(repo, pf)
                 all_files.update(files)
                 patcherr = not patcherr
             else:
                 self.ui.warn(_("patch %s is empty\n") % patchname)
                 patcherr, files, fuzz = 0, [], 0
 
             if merge and files:
                 # Mark as removed/merged and update dirstate parent info
                 removed = []
                 merged = []
                 for f in files:
                     if os.path.exists(repo.wjoin(f)):
                         merged.append(f)
                     else:
                         removed.append(f)
                 for f in removed:
                     repo.dirstate.remove(f)
                 for f in merged:
                     repo.dirstate.merge(f)
                 p1, p2 = repo.dirstate.parents()
                 repo.dirstate.setparents(p1, merge)
 
             files = patch.updatedir(self.ui, repo, files)
             match = cmdutil.matchfiles(repo, files or [])
             n = repo.commit(message, ph.user, ph.date, match=match, force=True)
 
             if n is None:
                 raise util.Abort(_("repo commit failed"))
 
             if update_status:
                 self.applied.append(statusentry(hex(n), patchname))
 
             if patcherr:
                 self.ui.warn(_("patch failed, rejects left in working dir\n"))
                 err = 2
                 break
 
             if fuzz and strict:
                 self.ui.warn(_("fuzz found when applying patch, stopping\n"))
                 err = 3
                 break
         return (err, n)
 
     def _cleanup(self, patches, numrevs, keep=False):
         if not keep:
             r = self.qrepo()
             if r:
                 r.remove(patches, True)
             else:
                 for p in patches:
                     os.unlink(self.join(p))
 
         if numrevs:
             del self.applied[:numrevs]
             self.applied_dirty = 1
 
         for i in sorted([self.find_series(p) for p in patches], reverse=True):
             del self.full_series[i]
         self.parse_series()
         self.series_dirty = 1
 
     def _revpatches(self, repo, revs):
         firstrev = repo[self.applied[0].rev].rev()
         patches = []
         for i, rev in enumerate(revs):
 
             if rev < firstrev:
                 raise util.Abort(_('revision %d is not managed') % rev)
 
             ctx = repo[rev]
             base = bin(self.applied[i].rev)
             if ctx.node() != base:
                 msg = _('cannot delete revision %d above applied patches')
                 raise util.Abort(msg % rev)
 
             patch = self.applied[i].name
             for fmt in ('[mq]: %s', 'imported patch %s'):
                 if ctx.description() == fmt % patch:
                     msg = _('patch %s finalized without changeset message\n')
                     repo.ui.status(msg % patch)
                     break
 
             patches.append(patch)
         return patches
 
     def finish(self, repo, revs):
         patches = self._revpatches(repo, sorted(revs))
         self._cleanup(patches, len(patches))
 
     def delete(self, repo, patches, opts):
         if not patches and not opts.get('rev'):
             raise util.Abort(_('qdelete requires at least one revision or '
                                'patch name'))
 
         realpatches = []
         for patch in patches:
             patch = self.lookup(patch, strict=True)
             info = self.isapplied(patch)
             if info:
                 raise util.Abort(_("cannot delete applied patch %s") % patch)
             if patch not in self.series:
                 raise util.Abort(_("patch %s not in series file") % patch)
             realpatches.append(patch)
 
         numrevs = 0
         if opts.get('rev'):
             if not self.applied:
                 raise util.Abort(_('no patches applied'))
             revs = cmdutil.revrange(repo, opts['rev'])
             if len(revs) > 1 and revs[0] > revs[1]:
                 revs.reverse()
             revpatches = self._revpatches(repo, revs)
             realpatches += revpatches
             numrevs = len(revpatches)
 
         self._cleanup(realpatches, numrevs, opts.get('keep'))
 
     def check_toppatch(self, repo):
         if len(self.applied) > 0:
             top = bin(self.applied[-1].rev)
             patch = self.applied[-1].name
             pp = repo.dirstate.parents()
             if top not in pp:
                 raise util.Abort(_("working directory revision is not qtip"))
             return top, patch
         return None, None
 
     def check_localchanges(self, repo, force=False, refresh=True):
         m, a, r, d = repo.status()[:4]
         if (m or a or r or d) and not force:
             if refresh:
                 raise util.Abort(_("local changes found, refresh first"))
             else:
                 raise util.Abort(_("local changes found"))
         return m, a, r, d
 
     _reserved = ('series', 'status', 'guards')
     def check_reserved_name(self, name):
         if (name in self._reserved or name.startswith('.hg')
             or name.startswith('.mq')):
             raise util.Abort(_('"%s" cannot be used as the name of a patch')
                              % name)
 
     def new(self, repo, patchfn, *pats, **opts):
         """options:
            msg: a string or a no-argument function returning a string
         """
         msg = opts.get('msg')
         user = opts.get('user')
         date = opts.get('date')
         if date:
             date = util.parsedate(date)
         diffopts = self.diffopts({'git': opts.get('git')})
         self.check_reserved_name(patchfn)
         if os.path.exists(self.join(patchfn)):
             raise util.Abort(_('patch "%s" already exists') % patchfn)
         if opts.get('include') or opts.get('exclude') or pats:
             match = cmdutil.match(repo, pats, opts)
             # detect missing files in pats
             def badfn(f, msg):
                 raise util.Abort('%s: %s' % (f, msg))
             match.bad = badfn
             m, a, r, d = repo.status(match=match)[:4]
         else:
             m, a, r, d = self.check_localchanges(repo, force=True)
             match = cmdutil.matchfiles(repo, m + a + r)
         if len(repo[None].parents()) > 1:
             raise util.Abort(_('cannot manage merge changesets'))
         commitfiles = m + a + r
         self.check_toppatch(repo)
         insert = self.full_series_end()
         wlock = repo.wlock()
         try:
             # if patch file write fails, abort early
             p = self.opener(patchfn, "w")
             try:
                 if self.plainmode:
                     if user:
                         p.write("From: " + user + "\n")
                         if not date:
                             p.write("\n")
                     if date:
                         p.write("Date: %d %d\n\n" % date)
                 else:
                     p.write("# HG changeset patch\n")
-                    p.write("# Parent " + hex(repo[None].parents()[0].node()) + "\n")
+                    p.write("# Parent "
+                            + hex(repo[None].parents()[0].node()) + "\n")
                     if user:
                         p.write("# User " + user + "\n")
                     if date:
                         p.write("# Date %s %s\n\n" % date)
                 if hasattr(msg, '__call__'):
                     msg = msg()
                 commitmsg = msg and msg or ("[mq]: %s" % patchfn)
                 n = repo.commit(commitmsg, user, date, match=match, force=True)
                 if n is None:
                     raise util.Abort(_("repo commit failed"))
                 try:
                     self.full_series[insert:insert] = [patchfn]
                     self.applied.append(statusentry(hex(n), patchfn))
                     self.parse_series()
                     self.series_dirty = 1
                     self.applied_dirty = 1
                     if msg:
                         msg = msg + "\n\n"
                         p.write(msg)
                     if commitfiles:
                         parent = self.qparents(repo, n)
                         chunks = patch.diff(repo, node1=parent, node2=n,
                                             match=match, opts=diffopts)
                         for chunk in chunks:
                             p.write(chunk)
                     p.close()
                     wlock.release()
                     wlock = None
                     r = self.qrepo()
                     if r:
                         r.add([patchfn])
                 except:
                     repo.rollback()
                     raise
             except Exception:
                 patchpath = self.join(patchfn)
                 try:
                     os.unlink(patchpath)
                 except:
                     self.ui.warn(_('error unlinking %s\n') % patchpath)
                 raise
             self.removeundo(repo)
         finally:
             release(wlock)
 
     def strip(self, repo, rev, update=True, backup="all", force=None):
         wlock = lock = None
         try:
             wlock = repo.wlock()
             lock = repo.lock()
 
             if update:
                 self.check_localchanges(repo, force=force, refresh=False)
                 urev = self.qparents(repo, rev)
                 hg.clean(repo, urev)
                 repo.dirstate.write()
 
             self.removeundo(repo)
             repair.strip(self.ui, repo, rev, backup)
             # strip may have unbundled a set of backed up revisions after
             # the actual strip
             self.removeundo(repo)
         finally:
             release(lock, wlock)
 
     def isapplied(self, patch):
         """returns (index, rev, patch)"""
         for i, a in enumerate(self.applied):
             if a.name == patch:
                 return (i, a.rev, a.name)
         return None
 
     # if the exact patch name does not exist, we try a few
     # variations.  If strict is passed, we try only #1
     #
     # 1) a number to indicate an offset in the series file
     # 2) a unique substring of the patch name was given
     # 3) patchname[-+]num to indicate an offset in the series file
     def lookup(self, patch, strict=False):
         patch = patch and str(patch)
 
         def partial_name(s):
             if s in self.series:
                 return s
             matches = [x for x in self.series if s in x]
             if len(matches) > 1:
                 self.ui.warn(_('patch name "%s" is ambiguous:\n') % s)
                 for m in matches:
                     self.ui.warn('  %s\n' % m)
                 return None
             if matches:
                 return matches[0]
             if len(self.series) > 0 and len(self.applied) > 0:
                 if s == 'qtip':
                     return self.series[self.series_end(True)-1]
                 if s == 'qbase':
                     return self.series[0]
             return None
 
         if patch is None:
             return None
         if patch in self.series:
             return patch
 
         if not os.path.isfile(self.join(patch)):
             try:
                 sno = int(patch)
             except (ValueError, OverflowError):
                 pass
             else:
                 if -len(self.series) <= sno < len(self.series):
                     return self.series[sno]
 
             if not strict:
                 res = partial_name(patch)
                 if res:
                     return res
                 minus = patch.rfind('-')
                 if minus >= 0:
                     res = partial_name(patch[:minus])
                     if res:
                         i = self.series.index(res)
                         try:
                             off = int(patch[minus + 1:] or 1)
                         except (ValueError, OverflowError):
                             pass
                         else:
                             if i - off >= 0:
                                 return self.series[i - off]
                 plus = patch.rfind('+')
                 if plus >= 0:
                     res = partial_name(patch[:plus])
                     if res:
                         i = self.series.index(res)
                         try:
                             off = int(patch[plus + 1:] or 1)
                         except (ValueError, OverflowError):
                             pass
                         else:
                             if i + off < len(self.series):
                                 return self.series[i + off]
         raise util.Abort(_("patch %s not in series") % patch)
 
     def push(self, repo, patch=None, force=False, list=False,
              mergeq=None, all=False):
         diffopts = self.diffopts()
         wlock = repo.wlock()
         try:
             heads = []
             for b, ls in repo.branchmap().iteritems():
                 heads += ls
             if not heads:
                 heads = [nullid]
             if repo.dirstate.parents()[0] not in heads:
                 self.ui.status(_("(working directory not at a head)\n"))
 
             if not self.series:
                 self.ui.warn(_('no patches in series\n'))
                 return 0
 
             patch = self.lookup(patch)
             # Suppose our series file is: A B C and the current 'top'
             # patch is B. qpush C should be performed (moving forward)
             # qpush B is a NOP (no change) qpush A is an error (can't
             # go backwards with qpush)
             if patch:
                 info = self.isapplied(patch)
                 if info:
                     if info[0] < len(self.applied) - 1:
                         raise util.Abort(
                             _("cannot push to a previous patch: %s") % patch)
                     self.ui.warn(
                         _('qpush: %s is already at the top\n') % patch)
                     return
                 pushable, reason = self.pushable(patch)
                 if not pushable:
                     if reason:
                         reason = _('guarded by %r') % reason
                     else:
                         reason = _('no matching guards')
                     self.ui.warn(_("cannot push '%s' - %s\n") % (patch, reason))
                     return 1
             elif all:
                 patch = self.series[-1]
                 if self.isapplied(patch):
                     self.ui.warn(_('all patches are currently applied\n'))
                     return 0
 
             # Following the above example, starting at 'top' of B:
             # qpush should be performed (pushes C), but a subsequent
             # qpush without an argument is an error (nothing to
             # apply). This allows a loop of "...while hg qpush..." to
             # work as it detects an error when done
             start = self.series_end()
             if start == len(self.series):
                 self.ui.warn(_('patch series already fully applied\n'))
                 return 1
             if not force:
                 self.check_localchanges(repo)
 
             self.applied_dirty = 1
             if start > 0:
                 self.check_toppatch(repo)
             if not patch:
                 patch = self.series[start]
                 end = start + 1
             else:
                 end = self.series.index(patch, start) + 1
 
             s = self.series[start:end]
             all_files = {}
             try:
                 if mergeq:
                     ret = self.mergepatch(repo, mergeq, s, diffopts)
                 else:
                     ret = self.apply(repo, s, list, all_files=all_files)
             except:
                 self.ui.warn(_('cleaning up working directory...'))
                 node = repo.dirstate.parents()[0]
                 hg.revert(repo, node, None)
                 unknown = repo.status(unknown=True)[4]
                 # only remove unknown files that we know we touched or
                 # created while patching
                 for f in unknown:
                     if f in all_files:
                         util.unlink(repo.wjoin(f))
                 self.ui.warn(_('done\n'))
                 raise
 
             if not self.applied:
                 return ret[0]
             top = self.applied[-1].name
             if ret[0] and ret[0] > 1:
                 msg = _("errors during apply, please fix and refresh %s\n")
                 self.ui.write(msg % top)
             else:
                 self.ui.write(_("now at: %s\n") % top)
             return ret[0]
 
         finally:
             wlock.release()
 
     def pop(self, repo, patch=None, force=False, update=True, all=False):
         def getfile(f, rev, flags):
             t = repo.file(f).read(rev)
             repo.wwrite(f, t, flags)
 
         wlock = repo.wlock()
         try:
             if patch:
                 # index, rev, patch
                 info = self.isapplied(patch)
                 if not info:
                     patch = self.lookup(patch)
                 info = self.isapplied(patch)
                 if not info:
                     raise util.Abort(_("patch %s is not applied") % patch)
 
             if len(self.applied) == 0:
                 # Allow qpop -a to work repeatedly,
                 # but not qpop without an argument
                 self.ui.warn(_("no patches applied\n"))
                 return not all
 
             if all:
                 start = 0
             elif patch:
                 start = info[0] + 1
             else:
                 start = len(self.applied) - 1
 
             if start >= len(self.applied):
                 self.ui.warn(_("qpop: %s is already at the top\n") % patch)
                 return
 
             if not update:
                 parents = repo.dirstate.parents()
                 rr = [bin(x.rev) for x in self.applied]
                 for p in parents:
                     if p in rr:
                         self.ui.warn(_("qpop: forcing dirstate update\n"))
                         update = True
             else:
                 parents = [p.hex() for p in repo[None].parents()]
                 needupdate = False
                 for entry in self.applied[start:]:
                     if entry.rev in parents:
                         needupdate = True
                         break
                 update = needupdate
 
             if not force and update:
                 self.check_localchanges(repo)
 
             self.applied_dirty = 1
             end = len(self.applied)
             rev = bin(self.applied[start].rev)
             if update:
                 top = self.check_toppatch(repo)[0]
 
             try:
                 heads = repo.changelog.heads(rev)
             except error.LookupError:
                 node = short(rev)
                 raise util.Abort(_('trying to pop unknown node %s') % node)
 
             if heads != [bin(self.applied[-1].rev)]:
                 raise util.Abort(_("popping would remove a revision not "
                                    "managed by this patch queue"))
 
             # we know there are no local changes, so we can make a simplified
             # form of hg.update.
             if update:
                 qp = self.qparents(repo, rev)
                 changes = repo.changelog.read(qp)
                 mmap = repo.manifest.read(changes[0])
                 m, a, r, d = repo.status(qp, top)[:4]
                 if d:
                     raise util.Abort(_("deletions found between repo revs"))
                 for f in a:
                     try:
                         os.unlink(repo.wjoin(f))
                     except OSError, e:
                         if e.errno != errno.ENOENT:
                             raise
                     try: os.removedirs(os.path.dirname(repo.wjoin(f)))
                     except: pass
                     repo.dirstate.forget(f)
                 for f in m:
                     getfile(f, mmap[f], mmap.flags(f))
                 for f in r:
                     getfile(f, mmap[f], mmap.flags(f))
                 for f in m + r:
                     repo.dirstate.normal(f)
                 repo.dirstate.setparents(qp, nullid)
             for patch in reversed(self.applied[start:end]):
                 self.ui.status(_("popping %s\n") % patch.name)
             del self.applied[start:end]
             self.strip(repo, rev, update=False, backup='strip')
             if len(self.applied):
                 self.ui.write(_("now at: %s\n") % self.applied[-1].name)
             else:
                 self.ui.write(_("patch queue now empty\n"))
         finally:
             wlock.release()
 
     def diff(self, repo, pats, opts):
         top, patch = self.check_toppatch(repo)
         if not top:
             self.ui.write(_("no patches applied\n"))
             return
         qp = self.qparents(repo, top)
         if opts.get('reverse'):
             node1, node2 = None, qp
         else:
             node1, node2 = qp, None
         diffopts = self.diffopts(opts, patch)
         self.printdiff(repo, diffopts, node1, node2, files=pats, opts=opts)
 
     def refresh(self, repo, pats=None, **opts):
         if len(self.applied) == 0:
             self.ui.write(_("no patches applied\n"))
             return 1
         msg = opts.get('msg', '').rstrip()
         newuser = opts.get('user')
         newdate = opts.get('date')
         if newdate:
             newdate = '%d %d' % util.parsedate(newdate)
         wlock = repo.wlock()
 
         try:
             self.check_toppatch(repo)
             (top, patchfn) = (self.applied[-1].rev, self.applied[-1].name)
             top = bin(top)
             if repo.changelog.heads(top) != [top]:
                 raise util.Abort(_("cannot refresh a revision with children"))
 
             cparents = repo.changelog.parents(top)
             patchparent = self.qparents(repo, top)
             ph = patchheader(self.join(patchfn), self.plainmode)
             diffopts = self.diffopts({'git': opts.get('git')}, patchfn)
             if msg:
                 ph.setmessage(msg)
             if newuser:
                 ph.setuser(newuser)
             if newdate:
                 ph.setdate(newdate)
             ph.setparent(hex(patchparent))
 
             # only commit new patch when write is complete
             patchf = self.opener(patchfn, 'w', atomictemp=True)
 
             comments = str(ph)
             if comments:
                 patchf.write(comments)
 
             # update the dirstate in place, strip off the qtip commit
             # and then commit.
             #
             # this should really read:
             #   mm, dd, aa, aa2 = repo.status(tip, patchparent)[:4]
             # but we do it backwards to take advantage of manifest/chlog
             # caching against the next repo.status call
             mm, aa, dd, aa2 = repo.status(patchparent, top)[:4]
             changes = repo.changelog.read(top)
             man = repo.manifest.read(changes[0])
             aaa = aa[:]
             matchfn = cmdutil.match(repo, pats, opts)
             # in short mode, we only diff the files included in the
             # patch already plus specified files
             if opts.get('short'):
                 # if amending a patch, we start with existing
                 # files plus specified files - unfiltered
                 match = cmdutil.matchfiles(repo, mm + aa + dd + matchfn.files())
                 # filter with inc/exl options
                 matchfn = cmdutil.match(repo, opts=opts)
             else:
                 match = cmdutil.matchall(repo)
             m, a, r, d = repo.status(match=match)[:4]
 
             # we might end up with files that were added between
             # qtip and the dirstate parent, but then changed in the
             # local dirstate. in this case, we want them to only
             # show up in the added section
             for x in m:
                 if x not in aa:
                     mm.append(x)
             # we might end up with files added by the local dirstate that
             # were deleted by the patch.  In this case, they should only
             # show up in the changed section.
             for x in a:
                 if x in dd:
                     del dd[dd.index(x)]
                     mm.append(x)
                 else:
                     aa.append(x)
             # make sure any files deleted in the local dirstate
             # are not in the add or change column of the patch
             forget = []
             for x in d + r:
                 if x in aa:
                     del aa[aa.index(x)]
                     forget.append(x)
                     continue
                 elif x in mm:
                     del mm[mm.index(x)]
                 dd.append(x)
 
             m = list(set(mm))
             r = list(set(dd))
             a = list(set(aa))
             c = [filter(matchfn, l) for l in (m, a, r)]
             match = cmdutil.matchfiles(repo, set(c[0] + c[1] + c[2]))
             chunks = patch.diff(repo, patchparent, match=match,
                                 changes=c, opts=diffopts)
             for chunk in chunks:
                 patchf.write(chunk)
 
             try:
                 if diffopts.git or diffopts.upgrade:
                     copies = {}
                     for dst in a:
                         src = repo.dirstate.copied(dst)
                         # during qfold, the source file for copies may
                         # be removed. Treat this as a simple add.
                         if src is not None and src in repo.dirstate:
                             copies.setdefault(src, []).append(dst)
                         repo.dirstate.add(dst)
                     # remember the copies between patchparent and qtip
                     for dst in aaa:
                         f = repo.file(dst)
                         src = f.renamed(man[dst])
                         if src:
                             copies.setdefault(src[0], []).extend(
                                 copies.get(dst, []))
                             if dst in a:
                                 copies[src[0]].append(dst)
                         # we can't copy a file created by the patch itself
                         if dst in copies:
                             del copies[dst]
                     for src, dsts in copies.iteritems():
                         for dst in dsts:
                             repo.dirstate.copy(src, dst)
                 else:
                     for dst in a:
                         repo.dirstate.add(dst)
                     # Drop useless copy information
                     for f in list(repo.dirstate.copies()):
                         repo.dirstate.copy(None, f)
                 for f in r:
                     repo.dirstate.remove(f)
                 # if the patch excludes a modified file, mark that
                 # file with mtime=0 so status can see it.
                 mm = []
                 for i in xrange(len(m)-1, -1, -1):
                     if not matchfn(m[i]):
                         mm.append(m[i])
                         del m[i]
                 for f in m:
                     repo.dirstate.normal(f)
                 for f in mm:
                     repo.dirstate.normallookup(f)
                 for f in forget:
                     repo.dirstate.forget(f)
 
                 if not msg:
                     if not ph.message:
                         message = "[mq]: %s\n" % patchfn
                     else:
                         message = "\n".join(ph.message)
                 else:
                     message = msg
 
                 user = ph.user or changes[1]
 
                 # assumes strip can roll itself back if interrupted
                 repo.dirstate.setparents(*cparents)
                 self.applied.pop()
                 self.applied_dirty = 1
                 self.strip(repo, top, update=False,
                            backup='strip')
             except:
                 repo.dirstate.invalidate()
                 raise
 
             try:
                 # might be nice to attempt to roll back strip after this
                 patchf.rename()
                 n = repo.commit(message, user, ph.date, match=match,
                                 force=True)
                 self.applied.append(statusentry(hex(n), patchfn))
             except:
                 ctx = repo[cparents[0]]
                 repo.dirstate.rebuild(ctx.node(), ctx.manifest())
                 self.save_dirty()
                 self.ui.warn(_('refresh interrupted while patch was popped! '
                                '(revert --all, qpush to recover)\n'))
                 raise
         finally:
             wlock.release()
             self.removeundo(repo)
 
     def init(self, repo, create=False):
         if not create and os.path.isdir(self.path):
             raise util.Abort(_("patch queue directory already exists"))
         try:
             os.mkdir(self.path)
         except OSError, inst:
             if inst.errno != errno.EEXIST or not create:
                 raise
         if create:
             return self.qrepo(create=True)
 
     def unapplied(self, repo, patch=None):
         if patch and patch not in self.series:
             raise util.Abort(_("patch %s is not in series file") % patch)
         if not patch:
             start = self.series_end()
         else:
             start = self.series.index(patch) + 1
         unapplied = []
         for i in xrange(start, len(self.series)):
             pushable, reason = self.pushable(i)
             if pushable:
                 unapplied.append((i, self.series[i]))
             self.explain_pushable(i)
         return unapplied
 
     def qseries(self, repo, missing=None, start=0, length=None, status=None,
                 summary=False):
         def displayname(pfx, patchname):
             if summary:
                 ph = patchheader(self.join(patchname), self.plainmode)
                 msg = ph.message and ph.message[0] or ''
                 if self.ui.interactive():
                     width = util.termwidth() - len(pfx) - len(patchname) - 2
                     if width > 0:
                         msg = util.ellipsis(msg, width)
                     else:
                         msg = ''
                 msg = "%s%s: %s" % (pfx, patchname, msg)
             else:
                 msg = pfx + patchname
             self.ui.write(msg + '\n')
 
         applied = set([p.name for p in self.applied])
         if length is None:
             length = len(self.series) - start
         if not missing:
             if self.ui.verbose:
                 idxwidth = len(str(start + length - 1))
             for i in xrange(start, start + length):
                 patch = self.series[i]
                 if patch in applied:
                     stat = 'A'
                 elif self.pushable(i)[0]:
                     stat = 'U'
                 else:
                     stat = 'G'
                 pfx = ''
                 if self.ui.verbose:
                     pfx = '%*d %s ' % (idxwidth, i, stat)
                 elif status and status != stat:
                     continue
                 displayname(pfx, patch)
         else:
             msng_list = []
             for root, dirs, files in os.walk(self.path):
                 d = root[len(self.path) + 1:]
                 for f in files:
                     fl = os.path.join(d, f)
                     if (fl not in self.series and
                         fl not in (self.status_path, self.series_path,
                                    self.guards_path)
                         and not fl.startswith('.')):
                         msng_list.append(fl)
             for x in sorted(msng_list):
                 pfx = self.ui.verbose and ('D ') or ''
                 displayname(pfx, x)
 
     def issaveline(self, l):
         if l.name == '.hg.patches.save.line':
             return True
 
     def qrepo(self, create=False):
         if create or os.path.isdir(self.join(".hg")):
             return hg.repository(self.ui, path=self.path, create=create)
 
     def restore(self, repo, rev, delete=None, qupdate=None):
         c = repo.changelog.read(rev)
         desc = c[4].strip()
         lines = desc.splitlines()
         i = 0
         datastart = None
         series = []
         applied = []
         qpp = None
         for i, line in enumerate(lines):
             if line == 'Patch Data:':
                 datastart = i + 1
             elif line.startswith('Dirstate:'):
                 l = line.rstrip()
                 l = l[10:].split(' ')
                 qpp = [bin(x) for x in l]
             elif datastart != None:
                 l = line.rstrip()
                 se = statusentry(l)
                 file_ = se.name
                 if se.rev:
                     applied.append(se)
                 else:
                     series.append(file_)
         if datastart is None:
             self.ui.warn(_("No saved patch data found\n"))
             return 1
         self.ui.warn(_("restoring status: %s\n") % lines[0])
         self.full_series = series
         self.applied = applied
         self.parse_series()
         self.series_dirty = 1
         self.applied_dirty = 1
         heads = repo.changelog.heads()
         if delete:
             if rev not in heads:
                 self.ui.warn(_("save entry has children, leaving it alone\n"))
             else:
                 self.ui.warn(_("removing save entry %s\n") % short(rev))
                 pp = repo.dirstate.parents()
                 if rev in pp:
                     update = True
                 else:
                     update = False
                 self.strip(repo, rev, update=update, backup='strip')
         if qpp:
             self.ui.warn(_("saved queue repository parents: %s %s\n") %
                          (short(qpp[0]), short(qpp[1])))
             if qupdate:
                 self.ui.status(_("queue directory updating\n"))
                 r = self.qrepo()
                 if not r:
                     self.ui.warn(_("Unable to load queue repository\n"))
                     return 1
                 hg.clean(r, qpp[0])
 
     def save(self, repo, msg=None):
         if len(self.applied) == 0:
             self.ui.warn(_("save: no patches applied, exiting\n"))
             return 1
         if self.issaveline(self.applied[-1]):
             self.ui.warn(_("status is already saved\n"))
             return 1
 
         ar = [':' + x for x in self.full_series]
         if not msg:
             msg = _("hg patches saved state")
         else:
             msg = "hg patches: " + msg.rstrip('\r\n')
         r = self.qrepo()
         if r:
             pp = r.dirstate.parents()
             msg += "\nDirstate: %s %s" % (hex(pp[0]), hex(pp[1]))
         msg += "\n\nPatch Data:\n"
         text = msg + "\n".join([str(x) for x in self.applied]) + '\n' + (ar and
                    "\n".join(ar) + '\n' or "")
         n = repo.commit(text, force=True)
         if not n:
             self.ui.warn(_("repo commit failed\n"))
             return 1
         self.applied.append(statusentry(hex(n),'.hg.patches.save.line'))
         self.applied_dirty = 1
         self.removeundo(repo)
 
     def full_series_end(self):
         if len(self.applied) > 0:
             p = self.applied[-1].name
             end = self.find_series(p)
             if end is None:
                 return len(self.full_series)
             return end + 1
         return 0
 
     def series_end(self, all_patches=False):
         """If all_patches is False, return the index of the next pushable patch
         in the series, or the series length. If all_patches is True, return the
         index of the first patch past the last applied one.
         """
         end = 0
         def next(start):
             if all_patches:
                 return start
             i = start
             while i < len(self.series):
                 p, reason = self.pushable(i)
                 if p:
                     break
                 self.explain_pushable(i)
                 i += 1
             return i
         if len(self.applied) > 0:
             p = self.applied[-1].name
             try:
                 end = self.series.index(p)
             except ValueError:
                 return 0
             return next(end + 1)
         return next(end)
 
     def appliedname(self, index):
         pname = self.applied[index].name
         if not self.ui.verbose:
             p = pname
         else:
             p = str(self.series.index(pname)) + " " + pname
         return p
 
     def qimport(self, repo, files, patchname=None, rev=None, existing=None,
                 force=None, git=False):
         def checkseries(patchname):
             if patchname in self.series:
                 raise util.Abort(_('patch %s is already in the series file')
                                  % patchname)
         def checkfile(patchname):
             if not force and os.path.exists(self.join(patchname)):
                 raise util.Abort(_('patch "%s" already exists')
                                  % patchname)
 
         if rev:
             if files:
                 raise util.Abort(_('option "-r" not valid when importing '
                                    'files'))
             rev = cmdutil.revrange(repo, rev)
             rev.sort(reverse=True)
         if (len(files) > 1 or len(rev) > 1) and patchname:
             raise util.Abort(_('option "-n" not valid when importing multiple '
                                'patches'))
         i = 0
         added = []
         if rev:
             # If mq patches are applied, we can only import revisions
             # that form a linear path to qbase.
             # Otherwise, they should form a linear path to a head.
             heads = repo.changelog.heads(repo.changelog.node(rev[-1]))
             if len(heads) > 1:
                 raise util.Abort(_('revision %d is the root of more than one '
                                    'branch') % rev[-1])
             if self.applied:
                 base = hex(repo.changelog.node(rev[0]))
                 if base in [n.rev for n in self.applied]:
                     raise util.Abort(_('revision %d is already managed')
                                      % rev[0])
                 if heads != [bin(self.applied[-1].rev)]:
                     raise util.Abort(_('revision %d is not the parent of '
                                        'the queue') % rev[0])
                 base = repo.changelog.rev(bin(self.applied[0].rev))
                 lastparent = repo.changelog.parentrevs(base)[0]
             else:
                 if heads != [repo.changelog.node(rev[0])]:
                     raise util.Abort(_('revision %d has unmanaged children')
                                      % rev[0])
                 lastparent = None
 
             diffopts = self.diffopts({'git': git})
             for r in rev:
                 p1, p2 = repo.changelog.parentrevs(r)
                 n = repo.changelog.node(r)
                 if p2 != nullrev:
                     raise util.Abort(_('cannot import merge revision %d') % r)
                 if lastparent and lastparent != r:
                     raise util.Abort(_('revision %d is not the parent of %d')
                                      % (r, lastparent))
                 lastparent = p1
 
                 if not patchname:
                     patchname = normname('%d.diff' % r)
                 self.check_reserved_name(patchname)
                 checkseries(patchname)
                 checkfile(patchname)
                 self.full_series.insert(0, patchname)
 
                 patchf = self.opener(patchname, "w")
                 patch.export(repo, [n], fp=patchf, opts=diffopts)
                 patchf.close()
 
                 se = statusentry(hex(n), patchname)
                 self.applied.insert(0, se)
 
                 added.append(patchname)
                 patchname = None
             self.parse_series()
             self.applied_dirty = 1
 
         for filename in files:
             if existing:
                 if filename == '-':
                     raise util.Abort(_('-e is incompatible with import from -'))
                 if not patchname:
                     patchname = normname(filename)
                 self.check_reserved_name(patchname)
                 if not os.path.isfile(self.join(patchname)):
                     raise util.Abort(_("patch %s does not exist") % patchname)
             else:
                 try:
                     if filename == '-':
                         if not patchname:
                             raise util.Abort(
                                 _('need --name to import a patch from -'))
                         text = sys.stdin.read()
                     else:
                         text = url.open(self.ui, filename).read()
                 except (OSError, IOError):
                     raise util.Abort(_("unable to read %s") % filename)
                 if not patchname:
                     patchname = normname(os.path.basename(filename))
                 self.check_reserved_name(patchname)
                 checkfile(patchname)
                 patchf = self.opener(patchname, "w")
                 patchf.write(text)
             if not force:
                 checkseries(patchname)
             if patchname not in self.series:
                 index = self.full_series_end() + i
                 self.full_series[index:index] = [patchname]
             self.parse_series()
             self.ui.warn(_("adding %s to series file\n") % patchname)
             i += 1
             added.append(patchname)
             patchname = None
         self.series_dirty = 1
         qrepo = self.qrepo()
         if qrepo:
             qrepo.add(added)
 
 def delete(ui, repo, *patches, **opts):
     """remove patches from queue
 
     The patches must not be applied, and at least one patch is required. With
     -k/--keep, the patch files are preserved in the patch directory.
 
     To stop managing a patch and move it into permanent history,
     use the qfinish command."""
     q = repo.mq
     q.delete(repo, patches, opts)
     q.save_dirty()
     return 0
 
 def applied(ui, repo, patch=None, **opts):
     """print the patches already applied"""
 
     q = repo.mq
     l = len(q.applied)
 
     if patch:
         if patch not in q.series:
             raise util.Abort(_("patch %s is not in series file") % patch)
         end = q.series.index(patch) + 1
     else:
         end = q.series_end(True)
 
     if opts.get('last') and not end:
         ui.write(_("no patches applied\n"))
         return 1
     elif opts.get('last') and end == 1:
         ui.write(_("only one patch applied\n"))
         return 1
     elif opts.get('last'):
         start = end - 2
         end = 1
     else:
         start = 0
 
     return q.qseries(repo, length=end, start=start, status='A',
                      summary=opts.get('summary'))
 
 def unapplied(ui, repo, patch=None, **opts):
     """print the patches not yet applied"""
 
     q = repo.mq
     if patch:
         if patch not in q.series:
             raise util.Abort(_("patch %s is not in series file") % patch)
         start = q.series.index(patch) + 1
     else:
         start = q.series_end(True)
 
     if start == len(q.series) and opts.get('first'):
         ui.write(_("all patches applied\n"))
         return 1
 
     length = opts.get('first') and 1 or None
     return q.qseries(repo, start=start, length=length, status='U',
                      summary=opts.get('summary'))
 
 def qimport(ui, repo, *filename, **opts):
     """import a patch
 
     The patch is inserted into the series after the last applied
     patch. If no patches have been applied, qimport prepends the patch
     to the series.
 
     The patch will have the same name as its source file unless you
     give it a new one with -n/--name.
 
     You can register an existing patch inside the patch directory with
     the -e/--existing flag.
 
     With -f/--force, an existing patch of the same name will be
     overwritten.
 
     An existing changeset may be placed under mq control with -r/--rev
     (e.g. qimport --rev tip -n patch will place tip under mq control).
     With -g/--git, patches imported with --rev will use the git diff
     format. See the diffs help topic for information on why this is
     important for preserving rename/copy information and permission
     changes.
 
     To import a patch from standard input, pass - as the patch file.
     When importing from standard input, a patch name must be specified
     using the --name flag.
     """
     q = repo.mq
     q.qimport(repo, filename, patchname=opts['name'],
               existing=opts['existing'], force=opts['force'], rev=opts['rev'],
               git=opts['git'])
     q.save_dirty()
 
     if opts.get('push') and not opts.get('rev'):
         return q.push(repo, None)
     return 0
 
 def init(ui, repo, **opts):
     """init a new queue repository (DEPRECATED)
 
     The queue repository is unversioned by default. If
     -c/--create-repo is specified, qinit will create a separate nested
     repository for patches (qinit -c may also be run later to convert
     an unversioned patch repository into a versioned one). You can use
     qcommit to commit changes to this queue repository.
 
     This command is deprecated. Without -c, it's implied by other relevant
     commands. With -c, use hg init -Q instead."""
     q = repo.mq
     r = q.init(repo, create=opts['create_repo'])
     q.save_dirty()
     if r:
         if not os.path.exists(r.wjoin('.hgignore')):
             fp = r.wopener('.hgignore', 'w')
             fp.write('^\\.hg\n')
             fp.write('^\\.mq\n')
             fp.write('syntax: glob\n')
             fp.write('status\n')
             fp.write('guards\n')
             fp.close()
         if not os.path.exists(r.wjoin('series')):
             r.wopener('series', 'w').close()
         r.add(['.hgignore', 'series'])
         commands.add(ui, r)
     return 0
 
 def clone(ui, source, dest=None, **opts):
     '''clone main and patch repository at same time
 
     If source is local, destination will have no patches applied. If
     source is remote, this command can not check if patches are
     applied in source, so cannot guarantee that patches are not
     applied in destination. If you clone remote repository, be sure
     before that it has no patches applied.
 
     Source patch repository is looked for in <src>/.hg/patches by
     default. Use -p <url> to change.
 
     The patch directory must be a nested Mercurial repository, as
     would be created by qinit -c.
     '''
     def patchdir(repo):
         url = repo.url()
         if url.endswith('/'):
             url = url[:-1]
         return url + '/.hg/patches'
     if dest is None:
         dest = hg.defaultdest(source)
     sr = hg.repository(cmdutil.remoteui(ui, opts), ui.expandpath(source))
     if opts['patches']:
         patchespath = ui.expandpath(opts['patches'])
     else:
         patchespath = patchdir(sr)
     try:
         hg.repository(ui, patchespath)
     except error.RepoError:
         raise util.Abort(_('versioned patch repository not found'
                            ' (see qinit -c)'))
     qbase, destrev = None, None
     if sr.local():
         if sr.mq.applied:
             qbase = bin(sr.mq.applied[0].rev)
             if not hg.islocal(dest):
                 heads = set(sr.heads())
                 destrev = list(heads.difference(sr.heads(qbase)))
                 destrev.append(sr.changelog.parents(qbase)[0])
     elif sr.capable('lookup'):
         try:
             qbase = sr.lookup('qbase')
         except error.RepoError:
             pass
     ui.note(_('cloning main repository\n'))
     sr, dr = hg.clone(ui, sr.url(), dest,
                       pull=opts['pull'],
                       rev=destrev,
                       update=False,
                       stream=opts['uncompressed'])
     ui.note(_('cloning patch repository\n'))
     hg.clone(ui, opts['patches'] or patchdir(sr), patchdir(dr),
              pull=opts['pull'], update=not opts['noupdate'],
              stream=opts['uncompressed'])
     if dr.local():
         if qbase:
             ui.note(_('stripping applied patches from destination '
                       'repository\n'))
             dr.mq.strip(dr, qbase, update=False, backup=None)
         if not opts['noupdate']:
             ui.note(_('updating destination repository\n'))
             hg.update(dr, dr.changelog.tip())
 
 def commit(ui, repo, *pats, **opts):
     """commit changes in the queue repository (DEPRECATED)
 
     This command is deprecated; use hg -Q commit instead."""
     q = repo.mq
     r = q.qrepo()
     if not r:
         raise util.Abort('no queue repository')
     commands.commit(r.ui, r, *pats, **opts)
 
 def series(ui, repo, **opts):
     """print the entire series file"""
     repo.mq.qseries(repo, missing=opts['missing'], summary=opts['summary'])
     return 0
 
 def top(ui, repo, **opts):
     """print the name of the current patch"""
     q = repo.mq
     t = q.applied and q.series_end(True) or 0
     if t:
         return q.qseries(repo, start=t - 1, length=1, status='A',
                          summary=opts.get('summary'))
     else:
         ui.write(_("no patches applied\n"))
         return 1
 
 def next(ui, repo, **opts):
     """print the name of the next patch"""
     q = repo.mq
     end = q.series_end()
     if end == len(q.series):
         ui.write(_("all patches applied\n"))
         return 1
     return q.qseries(repo, start=end, length=1, summary=opts.get('summary'))
 
 def prev(ui, repo, **opts):
     """print the name of the previous patch"""
     q = repo.mq
     l = len(q.applied)
     if l == 1:
         ui.write(_("only one patch applied\n"))
         return 1
     if not l:
         ui.write(_("no patches applied\n"))
         return 1
     return q.qseries(repo, start=l - 2, length=1, status='A',
                      summary=opts.get('summary'))
 
 def setupheaderopts(ui, opts):
     if not opts.get('user') and opts.get('currentuser'):
         opts['user'] = ui.username()
     if not opts.get('date') and opts.get('currentdate'):
         opts['date'] = "%d %d" % util.makedate()
 
 def new(ui, repo, patch, *args, **opts):
     """create a new patch
 
     qnew creates a new patch on top of the currently-applied patch (if
     any). It will refuse to run if there are any outstanding changes
     unless -f/--force is specified, in which case the patch will be
     initialized with them. You may also use -I/--include,
     -X/--exclude, and/or a list of files after the patch name to add
     only changes to matching files to the new patch, leaving the rest
     as uncommitted modifications.
 
     -u/--user and -d/--date can be used to set the (given) user and
     date, respectively. -U/--currentuser and -D/--currentdate set user
     to current user and date to current date.
 
     -e/--edit, -m/--message or -l/--logfile set the patch header as
     well as the commit message. If none is specified, the header is
     empty and the commit message is '[mq]: PATCH'.
 
     Use the -g/--git option to keep the patch in the git extended diff
     format. Read the diffs help topic for more information on why this
     is important for preserving permission changes and copy/rename
     information.
     """
     msg = cmdutil.logmessage(opts)
     def getmsg():
         return ui.edit(msg, ui.username())
     q = repo.mq
     opts['msg'] = msg
     if opts.get('edit'):
         opts['msg'] = getmsg
     else:
         opts['msg'] = msg
     setupheaderopts(ui, opts)
     q.new(repo, patch, *args, **opts)
     q.save_dirty()
     return 0
 
 def refresh(ui, repo, *pats, **opts):
     """update the current patch
 
     If any file patterns are provided, the refreshed patch will
     contain only the modifications that match those patterns; the
     remaining modifications will remain in the working directory.
 
     If -s/--short is specified, files currently included in the patch
     will be refreshed just like matched files and remain in the patch.
 
     hg add/remove/copy/rename work as usual, though you might want to
     use git-style patches (-g/--git or [diff] git=1) to track copies
     and renames. See the diffs help topic for more information on the
     git diff format.
     """
     q = repo.mq
     message = cmdutil.logmessage(opts)
     if opts['edit']:
         if not q.applied:
             ui.write(_("no patches applied\n"))
             return 1
         if message:
             raise util.Abort(_('option "-e" incompatible with "-m" or "-l"'))
         patch = q.applied[-1].name
         ph = patchheader(q.join(patch), q.plainmode)
         message = ui.edit('\n'.join(ph.message), ph.user or ui.username())
     setupheaderopts(ui, opts)
     ret = q.refresh(repo, pats, msg=message, **opts)
     q.save_dirty()
     return ret
 
 def diff(ui, repo, *pats, **opts):
     """diff of the current patch and subsequent modifications
 
     Shows a diff which includes the current patch as well as any
     changes which have been made in the working directory since the
     last refresh (thus showing what the current patch would become
     after a qrefresh).
 
     Use 'hg diff' if you only want to see the changes made since the
     last qrefresh, or 'hg export qtip' if you want to see changes made
     by the current patch without including changes made since the
     qrefresh.
     """
     repo.mq.diff(repo, pats, opts)
     return 0
 
 def fold(ui, repo, *files, **opts):
     """fold the named patches into the current patch
 
     Patches must not yet be applied. Each patch will be successively
     applied to the current patch in the order given. If all the
     patches apply successfully, the current patch will be refreshed
     with the new cumulative patch, and the folded patches will be
     deleted. With -k/--keep, the folded patch files will not be
     removed afterwards.
 
     The header for each folded patch will be concatenated with the
     current patch header, separated by a line of '* * *'."""
 
     q = repo.mq
 
     if not files:
         raise util.Abort(_('qfold requires at least one patch name'))
     if not q.check_toppatch(repo)[0]:
         raise util.Abort(_('No patches applied'))
     q.check_localchanges(repo)
 
     message = cmdutil.logmessage(opts)
     if opts['edit']:
         if message:
             raise util.Abort(_('option "-e" incompatible with "-m" or "-l"'))
 
     parent = q.lookup('qtip')
     patches = []
     messages = []
     for f in files:
         p = q.lookup(f)
         if p in patches or p == parent:
             ui.warn(_('Skipping already folded patch %s') % p)
         if q.isapplied(p):
             raise util.Abort(_('qfold cannot fold already applied patch %s') % p)
         patches.append(p)
 
     for p in patches:
         if not message:
             ph = patchheader(q.join(p), q.plainmode)
             if ph.message:
                 messages.append(ph.message)
         pf = q.join(p)
         (patchsuccess, files, fuzz) = q.patch(repo, pf)
         if not patchsuccess:
             raise util.Abort(_('Error folding patch %s') % p)
         patch.updatedir(ui, repo, files)
 
     if not message:
         ph = patchheader(q.join(parent), q.plainmode)
         message, user = ph.message, ph.user
         for msg in messages:
             message.append('* * *')
             message.extend(msg)
         message = '\n'.join(message)
 
     if opts['edit']:
         message = ui.edit(message, user or ui.username())
 
     diffopts = q.patchopts(q.diffopts(), *patches)
     q.refresh(repo, msg=message, git=diffopts.git)
     q.delete(repo, patches, opts)
     q.save_dirty()
 
 def goto(ui, repo, patch, **opts):
     '''push or pop patches until named patch is at top of stack'''
     q = repo.mq
     patch = q.lookup(patch)
     if q.isapplied(patch):
         ret = q.pop(repo, patch, force=opts['force'])
     else:
         ret = q.push(repo, patch, force=opts['force'])
     q.save_dirty()
     return ret
 
 def guard(ui, repo, *args, **opts):
     '''set or print guards for a patch
 
     Guards control whether a patch can be pushed. A patch with no
     guards is always pushed. A patch with a positive guard ("+foo") is
     pushed only if the qselect command has activated it. A patch with
     a negative guard ("-foo") is never pushed if the qselect command
     has activated it.
 
     With no arguments, print the currently active guards.
     With arguments, set guards for the named patch.
     NOTE: Specifying negative guards now requires '--'.
 
     To set guards on another patch::
 
       hg qguard -- other.patch +2.6.17 -stable
     '''
     def status(idx):
         guards = q.series_guards[idx] or ['unguarded']
         ui.write('%s: %s\n' % (q.series[idx], ' '.join(guards)))
     q = repo.mq
     patch = None
     args = list(args)
     if opts['list']:
         if args or opts['none']:
             raise util.Abort(_('cannot mix -l/--list with options or arguments'))
         for i in xrange(len(q.series)):
             status(i)
         return
     if not args or args[0][0:1] in '-+':
         if not q.applied:
             raise util.Abort(_('no patches applied'))
         patch = q.applied[-1].name
     if patch is None and args[0][0:1] not in '-+':
         patch = args.pop(0)
     if patch is None:
         raise util.Abort(_('no patch to work with'))
     if args or opts['none']:
         idx = q.find_series(patch)
         if idx is None:
             raise util.Abort(_('no patch named %s') % patch)
         q.set_guards(idx, args)
         q.save_dirty()
     else:
         status(q.series.index(q.lookup(patch)))
 
 def header(ui, repo, patch=None):
     """print the header of the topmost or specified patch"""
     q = repo.mq
 
     if patch:
         patch = q.lookup(patch)
     else:
         if not q.applied:
             ui.write('no patches applied\n')
             return 1
         patch = q.lookup('qtip')
     ph = patchheader(q.join(patch), q.plainmode)
 
     ui.write('\n'.join(ph.message) + '\n')
 
 def lastsavename(path):
     (directory, base) = os.path.split(path)
     names = os.listdir(directory)
     namere = re.compile("%s.([0-9]+)" % base)
     maxindex = None
     maxname = None
     for f in names:
         m = namere.match(f)
         if m:
             index = int(m.group(1))
             if maxindex is None or index > maxindex:
                 maxindex = index
                 maxname = f
     if maxname:
         return (os.path.join(directory, maxname), maxindex)
     return (None, None)
 
 def savename(path):
     (last, index) = lastsavename(path)
     if last is None:
         index = 0
     newpath = path + ".%d" % (index + 1)
     return newpath
 
 def push(ui, repo, patch=None, **opts):
     """push the next patch onto the stack
 
     When -f/--force is applied, all local changes in patched files
     will be lost.
     """
     q = repo.mq
     mergeq = None
 
     if opts['merge']:
         if opts['name']:
             newpath = repo.join(opts['name'])
         else:
             newpath, i = lastsavename(q.path)
         if not newpath:
             ui.warn(_("no saved queues found, please use -n\n"))
             return 1
         mergeq = queue(ui, repo.join(""), newpath)
         ui.warn(_("merging with queue at: %s\n") % mergeq.path)
     ret = q.push(repo, patch, force=opts['force'], list=opts['list'],
                  mergeq=mergeq, all=opts.get('all'))
     return ret
 
 def pop(ui, repo, patch=None, **opts):
     """pop the current patch off the stack
 
     By default, pops off the top of the patch stack. If given a patch
     name, keeps popping off patches until the named patch is at the
     top of the stack.
     """
     localupdate = True
     if opts['name']:
         q = queue(ui, repo.join(""), repo.join(opts['name']))
         ui.warn(_('using patch queue: %s\n') % q.path)
         localupdate = False
     else:
         q = repo.mq
     ret = q.pop(repo, patch, force=opts['force'], update=localupdate,
                 all=opts['all'])
     q.save_dirty()
     return ret
 
 def rename(ui, repo, patch, name=None, **opts):
     """rename a patch
 
     With one argument, renames the current patch to PATCH1.
     With two arguments, renames PATCH1 to PATCH2."""
 
     q = repo.mq
 
     if not name:
         name = patch
         patch = None
 
     if patch:
         patch = q.lookup(patch)
     else:
         if not q.applied:
             ui.write(_('no patches applied\n'))
             return
         patch = q.lookup('qtip')
     absdest = q.join(name)
     if os.path.isdir(absdest):
         name = normname(os.path.join(name, os.path.basename(patch)))
         absdest = q.join(name)
     if os.path.exists(absdest):
         raise util.Abort(_('%s already exists') % absdest)
 
     if name in q.series:
         raise util.Abort(
             _('A patch named %s already exists in the series file') % name)
 
     if ui.verbose:
         ui.write('renaming %s to %s\n' % (patch, name))
     i = q.find_series(patch)
     guards = q.guard_re.findall(q.full_series[i])
     q.full_series[i] = name + ''.join([' #' + g for g in guards])
     q.parse_series()
     q.series_dirty = 1
 
     info = q.isapplied(patch)
     if info:
         q.applied[info[0]] = statusentry(info[1], name)
     q.applied_dirty = 1
 
     util.rename(q.join(patch), absdest)
     r = q.qrepo()
     if r:
         wlock = r.wlock()
         try:
             if r.dirstate[patch] == 'a':
                 r.dirstate.forget(patch)
                 r.dirstate.add(name)
             else:
                 if r.dirstate[name] == 'r':
                     r.undelete([name])
                 r.copy(patch, name)
                 r.remove([patch], False)
         finally:
             wlock.release()
 
     q.save_dirty()
 
 def restore(ui, repo, rev, **opts):
     """restore the queue state saved by a revision (DEPRECATED)
 
     This command is deprecated, use rebase --mq instead."""
     rev = repo.lookup(rev)
     q = repo.mq
     q.restore(repo, rev, delete=opts['delete'],
               qupdate=opts['update'])
     q.save_dirty()
     return 0
 
 def save(ui, repo, **opts):
     """save current queue state (DEPRECATED)
 
     This command is deprecated, use rebase --mq instead."""
     q = repo.mq
     message = cmdutil.logmessage(opts)
     ret = q.save(repo, msg=message)
     if ret:
         return ret
     q.save_dirty()
     if opts['copy']:
         path = q.path
         if opts['name']:
             newpath = os.path.join(q.basepath, opts['name'])
             if os.path.exists(newpath):
                 if not os.path.isdir(newpath):
                     raise util.Abort(_('destination %s exists and is not '
                                        'a directory') % newpath)
                 if not opts['force']:
                     raise util.Abort(_('destination %s exists, '
                                        'use -f to force') % newpath)
         else:
             newpath = savename(path)
         ui.warn(_("copy %s to %s\n") % (path, newpath))
         util.copyfiles(path, newpath)
     if opts['empty']:
         try:
             os.unlink(q.join(q.status_path))
         except:
             pass
     return 0
 
 def strip(ui, repo, rev, **opts):
     """strip a revision and all its descendants from the repository
 
     If one of the working directory's parent revisions is stripped, the
     working directory will be updated to the parent of the stripped
     revision.
     """
     backup = 'all'
     if opts['backup']:
         backup = 'strip'
     elif opts['nobackup']:
         backup = 'none'
 
     rev = repo.lookup(rev)
     p = repo.dirstate.parents()
     cl = repo.changelog
     update = True
     if p[0] == nullid:
         update = False
     elif p[1] == nullid and rev != cl.ancestor(p[0], rev):
         update = False
     elif rev not in (cl.ancestor(p[0], rev), cl.ancestor(p[1], rev)):
         update = False
 
     repo.mq.strip(repo, rev, backup=backup, update=update, force=opts['force'])
     return 0
 
 def select(ui, repo, *args, **opts):
     '''set or print guarded patches to push
 
     Use the qguard command to set or print guards on patch, then use
     qselect to tell mq which guards to use. A patch will be pushed if
     it has no guards or any positive guards match the currently
     selected guard, but will not be pushed if any negative guards
     match the current guard. For example::
 
         qguard foo.patch -stable    (negative guard)
         qguard bar.patch +stable    (positive guard)
         qselect stable
 
     This activates the "stable" guard. mq will skip foo.patch (because
     it has a negative match) but push bar.patch (because it has a
     positive match).
 
     With no arguments, prints the currently active guards.
     With one argument, sets the active guard.
 
     Use -n/--none to deactivate guards (no other arguments needed).
     When no guards are active, patches with positive guards are
     skipped and patches with negative guards are pushed.
 
     qselect can change the guards on applied patches. It does not pop
     guarded patches by default. Use --pop to pop back to the last
     applied patch that is not guarded. Use --reapply (which implies
     --pop) to push back to the current patch afterwards, but skip
     guarded patches.
 
     Use -s/--series to print a list of all guards in the series file
     (no other arguments needed). Use -v for more information.'''
 
     q = repo.mq
     guards = q.active()
     if args or opts['none']:
         old_unapplied = q.unapplied(repo)
         old_guarded = [i for i in xrange(len(q.applied)) if
                        not q.pushable(i)[0]]
         q.set_active(args)
         q.save_dirty()
         if not args:
             ui.status(_('guards deactivated\n'))
         if not opts['pop'] and not opts['reapply']:
             unapplied = q.unapplied(repo)
             guarded = [i for i in xrange(len(q.applied))
                        if not q.pushable(i)[0]]
             if len(unapplied) != len(old_unapplied):
                 ui.status(_('number of unguarded, unapplied patches has '
                             'changed from %d to %d\n') %
                           (len(old_unapplied), len(unapplied)))
             if len(guarded) != len(old_guarded):
                 ui.status(_('number of guarded, applied patches has changed '
                             'from %d to %d\n') %
                           (len(old_guarded), len(guarded)))
     elif opts['series']:
         guards = {}
         noguards = 0
         for gs in q.series_guards:
             if not gs:
                 noguards += 1
             for g in gs:
                 guards.setdefault(g, 0)
                 guards[g] += 1
         if ui.verbose:
             guards['NONE'] = noguards
         guards = guards.items()
         guards.sort(key=lambda x: x[0][1:])
         if guards:
             ui.note(_('guards in series file:\n'))
             for guard, count in guards:
                 ui.note('%2d  ' % count)
                 ui.write(guard, '\n')
         else:
             ui.note(_('no guards in series file\n'))
     else:
         if guards:
             ui.note(_('active guards:\n'))
             for g in guards:
                 ui.write(g, '\n')
         else:
             ui.write(_('no active guards\n'))
     reapply = opts['reapply'] and q.applied and q.appliedname(-1)
     popped = False
     if opts['pop'] or opts['reapply']:
         for i in xrange(len(q.applied)):
             pushable, reason = q.pushable(i)
             if not pushable:
                 ui.status(_('popping guarded patches\n'))
                 popped = True
                 if i == 0:
                     q.pop(repo, all=True)
                 else:
                     q.pop(repo, i - 1)
                 break
     if popped:
         try:
             if reapply:
                 ui.status(_('reapplying unguarded patches\n'))
                 q.push(repo, reapply)
         finally:
             q.save_dirty()
 
 def finish(ui, repo, *revrange, **opts):
     """move applied patches into repository history
 
     Finishes the specified revisions (corresponding to applied
     patches) by moving them out of mq control into regular repository
     history.
 
     Accepts a revision range or the -a/--applied option. If --applied
     is specified, all applied mq revisions are removed from mq
     control. Otherwise, the given revisions must be at the base of the
     stack of applied patches.
 
     This can be especially useful if your changes have been applied to
     an upstream repository, or if you are about to push your changes
     to upstream.
     """
     if not opts['applied'] and not revrange:
         raise util.Abort(_('no revisions specified'))
     elif opts['applied']:
         revrange = ('qbase:qtip',) + revrange
 
     q = repo.mq
     if not q.applied:
         ui.status(_('no patches applied\n'))
         return 0
 
     revs = cmdutil.revrange(repo, revrange)
     q.finish(repo, revs)
     q.save_dirty()
     return 0
 
 def reposetup(ui, repo):
     class mqrepo(repo.__class__):
         @util.propertycache
         def mq(self):
             return queue(self.ui, self.join(""))
 
         def abort_if_wdir_patched(self, errmsg, force=False):
             if self.mq.applied and not force:
                 parent = hex(self.dirstate.parents()[0])
                 if parent in [s.rev for s in self.mq.applied]:
                     raise util.Abort(errmsg)
 
         def commit(self, text="", user=None, date=None, match=None,
                    force=False, editor=False, extra={}):
             self.abort_if_wdir_patched(
                 _('cannot commit over an applied mq patch'),
                 force)
 
             return super(mqrepo, self).commit(text, user, date, match, force,
                                               editor, extra)
 
         def push(self, remote, force=False, revs=None):
             if self.mq.applied and not force and not revs:
                 raise util.Abort(_('source has mq patches applied'))
             return super(mqrepo, self).push(remote, force, revs)
 
         def _findtags(self):
             '''augment tags from base class with patch tags'''
             result = super(mqrepo, self)._findtags()
 
             q = self.mq
             if not q.applied:
                 return result
 
             mqtags = [(bin(patch.rev), patch.name) for patch in q.applied]
 
             if mqtags[-1][0] not in self.changelog.nodemap:
                 self.ui.warn(_('mq status file refers to unknown node %s\n')
                              % short(mqtags[-1][0]))
                 return result
 
             mqtags.append((mqtags[-1][0], 'qtip'))
             mqtags.append((mqtags[0][0], 'qbase'))
             mqtags.append((self.changelog.parents(mqtags[0][0])[0], 'qparent'))
             tags = result[0]
             for patch in mqtags:
                 if patch[1] in tags:
                     self.ui.warn(_('Tag %s overrides mq patch of the same name\n')
                                  % patch[1])
                 else:
                     tags[patch[1]] = patch[0]
 
             return result
 
         def _branchtags(self, partial, lrev):
             q = self.mq
             if not q.applied:
                 return super(mqrepo, self)._branchtags(partial, lrev)
 
             cl = self.changelog
             qbasenode = bin(q.applied[0].rev)
             if qbasenode not in cl.nodemap:
                 self.ui.warn(_('mq status file refers to unknown node %s\n')
                              % short(qbasenode))
                 return super(mqrepo, self)._branchtags(partial, lrev)
 
             qbase = cl.rev(qbasenode)
             start = lrev + 1
             if start < qbase:
                 # update the cache (excluding the patches) and save it
                 self._updatebranchcache(partial, lrev + 1, qbase)
                 self._writebranchcache(partial, cl.node(qbase - 1), qbase - 1)
                 start = qbase
             # if start = qbase, the cache is as updated as it should be.
             # if start > qbase, the cache includes (part of) the patches.
             # we might as well use it, but we won't save it.
 
             # update the cache up to the tip
             self._updatebranchcache(partial, start, len(cl))
 
             return partial
 
     if repo.local():
         repo.__class__ = mqrepo
 
 def mqimport(orig, ui, repo, *args, **kwargs):
     if (hasattr(repo, 'abort_if_wdir_patched')
         and not kwargs.get('no_commit', False)):
         repo.abort_if_wdir_patched(_('cannot import over an applied patch'),
                                    kwargs.get('force'))
     return orig(ui, repo, *args, **kwargs)
 
 def mqinit(orig, ui, *args, **kwargs):
     mq = kwargs['mq']
     del kwargs['mq']
 
     if not mq:
         return orig(ui, *args, **kwargs)
 
     repopath = cmdutil.findrepo(os.getcwd())
     repo = hg.repository(ui, repopath)
     q = repo.mq
     r = q.init(repo, create=True)
     q.save_dirty()
 
     if not os.path.exists(r.wjoin('.hgignore')):
         fp = r.wopener('.hgignore', 'w')
         fp.write('^\\.hg\n')
         fp.write('^\\.mq\n')
         fp.write('syntax: glob\n')
         fp.write('status\n')
         fp.write('guards\n')
         fp.close()
     if not os.path.exists(r.wjoin('series')):
         r.wopener('series', 'w').close()
     r.add(['.hgignore', 'series'])
     commands.add(ui, r)
 
 def mqcommand(orig, ui, repo, *args, **kwargs):
     """Add --mq option to operate on patch repository instead of main"""
 
     # some commands do not like getting unknown options
     mq = kwargs['mq']
     del kwargs['mq']
 
     if not mq:
         return orig(ui, repo, *args, **kwargs)
 
     q = repo.mq
     r = q.qrepo()
     if not r:
         raise util.Abort('no queue repository')
     return orig(r.ui, r, *args, **kwargs)
 
 def uisetup(ui):
     mqopt = [('Q', 'mq', None, _("operate on patch repository"))]
 
     extensions.wrapcommand(commands.table, 'import', mqimport)
 
     entry = extensions.wrapcommand(commands.table, 'init', mqinit)
     entry[1].extend(mqopt)
 
     for cmd in commands.table:
         cmd = cmdutil.parsealiases(cmd)[0]
         if cmd in commands.norepo:
             continue
         entry = extensions.wrapcommand(commands.table, cmd, mqcommand)
         entry[1].extend(mqopt)
 
 seriesopts = [('s', 'summary', None, _('print first line of patch header'))]
 
 cmdtable = {
     "qapplied":
         (applied,
          [('1', 'last', None, _('show only the last patch'))] + seriesopts,
          _('hg qapplied [-1] [-s] [PATCH]')),
     "qclone":
         (clone,
          [('', 'pull', None, _('use pull protocol to copy metadata')),
           ('U', 'noupdate', None, _('do not update the new working directories')),
           ('', 'uncompressed', None,
            _('use uncompressed transfer (fast over LAN)')),
           ('p', 'patches', '', _('location of source patch repository')),
          ] + commands.remoteopts,
          _('hg qclone [OPTION]... SOURCE [DEST]')),
     "qcommit|qci":
         (commit,
          commands.table["^commit|ci"][1],
          _('hg qcommit [OPTION]... [FILE]...')),
     "^qdiff":
         (diff,
          commands.diffopts + commands.diffopts2 + commands.walkopts,
          _('hg qdiff [OPTION]... [FILE]...')),
     "qdelete|qremove|qrm":
         (delete,
          [('k', 'keep', None, _('keep patch file')),
           ('r', 'rev', [], _('stop managing a revision (DEPRECATED)'))],
          _('hg qdelete [-k] [-r REV]... [PATCH]...')),
     'qfold':
         (fold,
          [('e', 'edit', None, _('edit patch header')),
           ('k', 'keep', None, _('keep folded patch files')),
          ] + commands.commitopts,
          _('hg qfold [-e] [-k] [-m TEXT] [-l FILE] PATCH...')),
     'qgoto':
         (goto,
          [('f', 'force', None, _('overwrite any local changes'))],
          _('hg qgoto [OPTION]... PATCH')),
     'qguard':
         (guard,
          [('l', 'list', None, _('list all patches and guards')),
           ('n', 'none', None, _('drop all guards'))],
          _('hg qguard [-l] [-n] -- [PATCH] [+GUARD]... [-GUARD]...')),
     'qheader': (header, [], _('hg qheader [PATCH]')),
     "^qimport":
         (qimport,
          [('e', 'existing', None, _('import file in patch directory')),
           ('n', 'name', '', _('name of patch file')),
           ('f', 'force', None, _('overwrite existing files')),
           ('r', 'rev', [], _('place existing revisions under mq control')),
           ('g', 'git', None, _('use git extended diff format')),
           ('P', 'push', None, _('qpush after importing'))],
          _('hg qimport [-e] [-n NAME] [-f] [-g] [-P] [-r REV]... FILE...')),
     "^qinit":
         (init,
          [('c', 'create-repo', None, _('create queue repository'))],
          _('hg qinit [-c]')),
     "qnew":
         (new,
          [('e', 'edit', None, _('edit commit message')),
           ('f', 'force', None, _('import uncommitted changes (DEPRECATED)')),
           ('g', 'git', None, _('use git extended diff format')),
           ('U', 'currentuser', None, _('add "From: <current user>" to patch')),
           ('u', 'user', '', _('add "From: <given user>" to patch')),
           ('D', 'currentdate', None, _('add "Date: <current date>" to patch')),
           ('d', 'date', '', _('add "Date: <given date>" to patch'))
           ] + commands.walkopts + commands.commitopts,
          _('hg qnew [-e] [-m TEXT] [-l FILE] [-f] PATCH [FILE]...')),
     "qnext": (next, [] + seriesopts, _('hg qnext [-s]')),
     "qprev": (prev, [] + seriesopts, _('hg qprev [-s]')),
     "^qpop":
         (pop,
          [('a', 'all', None, _('pop all patches')),
           ('n', 'name', '', _('queue name to pop (DEPRECATED)')),
           ('f', 'force', None, _('forget any local changes to patched files'))],
          _('hg qpop [-a] [-n NAME] [-f] [PATCH | INDEX]')),
     "^qpush":
         (push,
          [('f', 'force', None, _('apply if the patch has rejects')),
           ('l', 'list', None, _('list patch name in commit text')),
           ('a', 'all', None, _('apply all patches')),
           ('m', 'merge', None, _('merge from another queue (DEPRECATED)')),
           ('n', 'name', '', _('merge queue name (DEPRECATED)'))],
          _('hg qpush [-f] [-l] [-a] [-m] [-n NAME] [PATCH | INDEX]')),
     "^qrefresh":
         (refresh,
          [('e', 'edit', None, _('edit commit message')),
           ('g', 'git', None, _('use git extended diff format')),
           ('s', 'short', None,
            _('refresh only files already in the patch and specified files')),
           ('U', 'currentuser', None,
            _('add/update author field in patch with current user')),
           ('u', 'user', '',
            _('add/update author field in patch with given user')),
           ('D', 'currentdate', None,
            _('add/update date field in patch with current date')),
           ('d', 'date', '',
            _('add/update date field in patch with given date'))
           ] + commands.walkopts + commands.commitopts,
          _('hg qrefresh [-I] [-X] [-e] [-m TEXT] [-l FILE] [-s] [FILE]...')),
     'qrename|qmv':
         (rename, [], _('hg qrename PATCH1 [PATCH2]')),
     "qrestore":
         (restore,
          [('d', 'delete', None, _('delete save entry')),
           ('u', 'update', None, _('update queue working directory'))],
          _('hg qrestore [-d] [-u] REV')),
     "qsave":
         (save,
          [('c', 'copy', None, _('copy patch directory')),
           ('n', 'name', '', _('copy directory name')),
           ('e', 'empty', None, _('clear queue status file')),
           ('f', 'force', None, _('force copy'))] + commands.commitopts,
          _('hg qsave [-m TEXT] [-l FILE] [-c] [-n NAME] [-e] [-f]')),
     "qselect":
         (select,
          [('n', 'none', None, _('disable all guards')),
           ('s', 'series', None, _('list all guards in series file')),
           ('', 'pop', None, _('pop to before first guarded applied patch')),
           ('', 'reapply', None, _('pop, then reapply patches'))],
          _('hg qselect [OPTION]... [GUARD]...')),
     "qseries":
         (series,
          [('m', 'missing', None, _('print patches not in series')),
          ] + seriesopts,
          _('hg qseries [-ms]')),
     "^strip":
         (strip,
          [('f', 'force', None, _('force removal with local changes')),
           ('b', 'backup', None, _('bundle unrelated changesets')),
           ('n', 'nobackup', None, _('no backups'))],
          _('hg strip [-f] [-b] [-n] REV')),
     "qtop": (top, [] + seriesopts, _('hg qtop [-s]')),
     "qunapplied":
         (unapplied,
          [('1', 'first', None, _('show only the first patch'))] + seriesopts,
          _('hg qunapplied [-1] [-s] [PATCH]')),
     "qfinish":
         (finish,
          [('a', 'applied', None, _('finish all applied changesets'))],
          _('hg qfinish [-a] [REV]...')),
 }

hgext/rebase.py

@@ -1,506 +1,506 b''
 # rebase.py - rebasing feature for mercurial
 #
 # Copyright 2008 Stefano Tortarolo <stefano.tortarolo at gmail dot com>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 '''command to move sets of revisions to a different ancestor
 
 This extension lets you rebase changesets in an existing Mercurial
 repository.
 
 For more information:
 http://mercurial.selenic.com/wiki/RebaseExtension
 '''
 
 from mercurial import util, repair, merge, cmdutil, commands, error
 from mercurial import extensions, ancestor, copies, patch
 from mercurial.commands import templateopts
 from mercurial.node import nullrev
 from mercurial.lock import release
 from mercurial.i18n import _
 import os, errno
 
 nullmerge = -2
 
 def rebase(ui, repo, **opts):
     """move changeset (and descendants) to a different branch
 
     Rebase uses repeated merging to graft changesets from one part of
     history onto another. This can be useful for linearizing local
     changes relative to a master development tree.
 
     If a rebase is interrupted to manually resolve a merge, it can be
     continued with --continue/-c or aborted with --abort/-a.
     """
     originalwd = target = None
     external = nullrev
     state = {}
     skipped = set()
     targetancestors = set()
 
     lock = wlock = None
     try:
         lock = repo.lock()
         wlock = repo.wlock()
 
         # Validate input and define rebasing points
         destf = opts.get('dest', None)
         srcf = opts.get('source', None)
         basef = opts.get('base', None)
         contf = opts.get('continue')
         abortf = opts.get('abort')
         collapsef = opts.get('collapse', False)
         extrafn = opts.get('extrafn')
         keepf = opts.get('keep', False)
         keepbranchesf = opts.get('keepbranches', False)
         detachf = opts.get('detach', False)
 
         if contf or abortf:
             if contf and abortf:
                 raise error.ParseError('rebase',
                                        _('cannot use both abort and continue'))
             if collapsef:
                 raise error.ParseError(
                     'rebase', _('cannot use collapse with continue or abort'))
 
             if detachf:
                 raise error.ParseError(
                     'rebase', _('cannot use detach with continue or abort'))
 
             if srcf or basef or destf:
                 raise error.ParseError('rebase',
                     _('abort and continue do not allow specifying revisions'))
 
             (originalwd, target, state, collapsef, keepf,
                                 keepbranchesf, external) = restorestatus(repo)
             if abortf:
                 abort(repo, originalwd, target, state)
                 return
         else:
             if srcf and basef:
                 raise error.ParseError('rebase', _('cannot specify both a '
                                                    'revision and a base'))
             if detachf:
                 if not srcf:
                     raise error.ParseError(
                       'rebase', _('detach requires a revision to be specified'))
                 if basef:
                     raise error.ParseError(
                         'rebase', _('cannot specify a base with detach'))
 
             cmdutil.bail_if_changed(repo)
             result = buildstate(repo, destf, srcf, basef, detachf)
             if not result:
                 # Empty state built, nothing to rebase
                 ui.status(_('nothing to rebase\n'))
                 return
             else:
                 originalwd, target, state = result
                 if collapsef:
                     targetancestors = set(repo.changelog.ancestors(target))
                     external = checkexternal(repo, state, targetancestors)
 
         if keepbranchesf:
             if extrafn:
                 raise error.ParseError(
                     'rebase', _('cannot use both keepbranches and extrafn'))
             def extrafn(ctx, extra):
                 extra['branch'] = ctx.branch()
 
         # Rebase
         if not targetancestors:
             targetancestors = set(repo.changelog.ancestors(target))
             targetancestors.add(target)
 
         for rev in sorted(state):
             if state[rev] == -1:
                 ui.debug("rebasing %d:%s\n" % (rev, repo[rev]))
                 storestatus(repo, originalwd, target, state, collapsef, keepf,
                                                     keepbranchesf, external)
                 p1, p2 = defineparents(repo, rev, target, state,
                                                         targetancestors)
                 if len(repo.parents()) == 2:
                     repo.ui.debug('resuming interrupted rebase\n')
                 else:
                     stats = rebasenode(repo, rev, p1, p2, state)
                     if stats and stats[3] > 0:
                         raise util.Abort(_('fix unresolved conflicts with hg '
                                     'resolve then run hg rebase --continue'))
                 updatedirstate(repo, rev, target, p2)
                 if not collapsef:
                     extra = {'rebase_source': repo[rev].hex()}
                     if extrafn:
                         extrafn(repo[rev], extra)
                     newrev = concludenode(repo, rev, p1, p2, extra=extra)
                 else:
                     # Skip commit if we are collapsing
                     repo.dirstate.setparents(repo[p1].node())
                     newrev = None
                 # Update the state
                 if newrev is not None:
                     state[rev] = repo[newrev].rev()
                 else:
                     if not collapsef:
                         ui.note(_('no changes, revision %d skipped\n') % rev)
                         ui.debug('next revision set to %s\n' % p1)
                         skipped.add(rev)
                     state[rev] = p1
 
         ui.note(_('rebase merging completed\n'))
 
         if collapsef:
             p1, p2 = defineparents(repo, min(state), target,
                                                         state, targetancestors)
             commitmsg = 'Collapsed revision'
             for rebased in state:
                 if rebased not in skipped and state[rebased] != nullmerge:
                     commitmsg += '\n* %s' % repo[rebased].description()
             commitmsg = ui.edit(commitmsg, repo.ui.username())
             newrev = concludenode(repo, rev, p1, external, commitmsg=commitmsg,
                                                     extra=extrafn)
 
         if 'qtip' in repo.tags():
             updatemq(repo, state, skipped, **opts)
 
         if not keepf:
             # Remove no more useful revisions
             rebased = [rev for rev in state if state[rev] != nullmerge]
             if rebased:
                 if set(repo.changelog.descendants(min(rebased))) - set(state):
                     ui.warn(_("warning: new changesets detected on source branch, "
                                                             "not stripping\n"))
                 else:
                     repair.strip(ui, repo, repo[min(rebased)].node(), "strip")
 
         clearstatus(repo)
         ui.status(_("rebase completed\n"))
         if os.path.exists(repo.sjoin('undo')):
             util.unlink(repo.sjoin('undo'))
         if skipped:
             ui.note(_("%d revisions have been skipped\n") % len(skipped))
     finally:
         release(lock, wlock)
 
 def rebasemerge(repo, rev, first=False):
     'return the correct ancestor'
     oldancestor = ancestor.ancestor
 
     def newancestor(a, b, pfunc):
         if b == rev:
             return repo[rev].parents()[0].rev()
         return oldancestor(a, b, pfunc)
 
     if not first:
         ancestor.ancestor = newancestor
     else:
         repo.ui.debug("first revision, do not change ancestor\n")
     try:
         stats = merge.update(repo, rev, True, True, False)
         return stats
     finally:
         ancestor.ancestor = oldancestor
 
 def checkexternal(repo, state, targetancestors):
     """Check whether one or more external revisions need to be taken in
     consideration. In the latter case, abort.
     """
     external = nullrev
     source = min(state)
     for rev in state:
         if rev == source:
             continue
         # Check externals and fail if there are more than one
         for p in repo[rev].parents():
             if (p.rev() not in state
                         and p.rev() not in targetancestors):
                 if external != nullrev:
                     raise util.Abort(_('unable to collapse, there is more '
                             'than one external parent'))
                 external = p.rev()
     return external
 
 def updatedirstate(repo, rev, p1, p2):
     """Keep track of renamed files in the revision that is going to be rebased
     """
     # Here we simulate the copies and renames in the source changeset
     cop, diver = copies.copies(repo, repo[rev], repo[p1], repo[p2], True)
     m1 = repo[rev].manifest()
     m2 = repo[p1].manifest()
     for k, v in cop.iteritems():
         if k in m1:
             if v in m1 or v in m2:
                 repo.dirstate.copy(v, k)
                 if v in m2 and v not in m1:
                     repo.dirstate.remove(v)
 
 def concludenode(repo, rev, p1, p2, commitmsg=None, extra=None):
     'Commit the changes and store useful information in extra'
     try:
         repo.dirstate.setparents(repo[p1].node(), repo[p2].node())
         if commitmsg is None:
             commitmsg = repo[rev].description()
         if extra is None:
             extra = {}
         # Commit might fail if unresolved files exist
         newrev = repo.commit(text=commitmsg, user=repo[rev].user(),
                              date=repo[rev].date(), extra=extra)
         repo.dirstate.setbranch(repo[newrev].branch())
         return newrev
     except util.Abort:
         # Invalidate the previous setparents
         repo.dirstate.invalidate()
         raise
 
 def rebasenode(repo, rev, p1, p2, state):
     'Rebase a single revision'
     # Merge phase
     # Update to target and merge it with local
     if repo['.'].rev() != repo[p1].rev():
         repo.ui.debug(" update to %d:%s\n" % (repo[p1].rev(), repo[p1]))
         merge.update(repo, p1, False, True, False)
     else:
         repo.ui.debug(" already in target\n")
     repo.dirstate.write()
     repo.ui.debug(" merge against %d:%s\n" % (repo[rev].rev(), repo[rev]))
     first = repo[rev].rev() == repo[min(state)].rev()
     stats = rebasemerge(repo, rev, first)
     return stats
 
 def defineparents(repo, rev, target, state, targetancestors):
     'Return the new parent relationship of the revision that will be rebased'
     parents = repo[rev].parents()
     p1 = p2 = nullrev
 
     P1n = parents[0].rev()
     if P1n in targetancestors:
         p1 = target
     elif P1n in state:
         if state[P1n] == nullmerge:
             p1 = target
         else:
             p1 = state[P1n]
     else: # P1n external
         p1 = target
         p2 = P1n
 
     if len(parents) == 2 and parents[1].rev() not in targetancestors:
         P2n = parents[1].rev()
         # interesting second parent
         if P2n in state:
             if p1 == target: # P1n in targetancestors or external
                 p1 = state[P2n]
             else:
                 p2 = state[P2n]
         else: # P2n external
             if p2 != nullrev: # P1n external too => rev is a merged revision
                 raise util.Abort(_('cannot use revision %d as base, result '
                         'would have 3 parents') % rev)
             p2 = P2n
     repo.ui.debug(" future parents are %d and %d\n" %
                             (repo[p1].rev(), repo[p2].rev()))
     return p1, p2
 
 def isagitpatch(repo, patchname):
     'Return true if the given patch is in git format'
     mqpatch = os.path.join(repo.mq.path, patchname)
     for line in patch.linereader(file(mqpatch, 'rb')):
         if line.startswith('diff --git'):
             return True
     return False
 
 def updatemq(repo, state, skipped, **opts):
     'Update rebased mq patches - finalize and then import them'
     mqrebase = {}
     for p in repo.mq.applied:
         if repo[p.rev].rev() in state:
             repo.ui.debug('revision %d is an mq patch (%s), finalize it.\n' %
                                         (repo[p.rev].rev(), p.name))
             mqrebase[repo[p.rev].rev()] = (p.name, isagitpatch(repo, p.name))
 
     if mqrebase:
         repo.mq.finish(repo, mqrebase.keys())
 
         # We must start import from the newest revision
         for rev in sorted(mqrebase, reverse=True):
             if rev not in skipped:
                 repo.ui.debug('import mq patch %d (%s)\n'
                               % (state[rev], mqrebase[rev][0]))
                 repo.mq.qimport(repo, (), patchname=mqrebase[rev][0],
                             git=mqrebase[rev][1],rev=[str(state[rev])])
         repo.mq.save_dirty()
 
 def storestatus(repo, originalwd, target, state, collapse, keep, keepbranches,
                                                                 external):
     'Store the current status to allow recovery'
     f = repo.opener("rebasestate", "w")
     f.write(repo[originalwd].hex() + '\n')
     f.write(repo[target].hex() + '\n')
     f.write(repo[external].hex() + '\n')
     f.write('%d\n' % int(collapse))
     f.write('%d\n' % int(keep))
     f.write('%d\n' % int(keepbranches))
     for d, v in state.iteritems():
         oldrev = repo[d].hex()
         newrev = repo[v].hex()
         f.write("%s:%s\n" % (oldrev, newrev))
     f.close()
     repo.ui.debug('rebase status stored\n')
 
 def clearstatus(repo):
     'Remove the status files'
     if os.path.exists(repo.join("rebasestate")):
         util.unlink(repo.join("rebasestate"))
 
 def restorestatus(repo):
     'Restore a previously stored status'
     try:
         target = None
         collapse = False
         external = nullrev
         state = {}
         f = repo.opener("rebasestate")
         for i, l in enumerate(f.read().splitlines()):
             if i == 0:
                 originalwd = repo[l].rev()
             elif i == 1:
                 target = repo[l].rev()
             elif i == 2:
                 external = repo[l].rev()
             elif i == 3:
                 collapse = bool(int(l))
             elif i == 4:
                 keep = bool(int(l))
             elif i == 5:
                 keepbranches = bool(int(l))
             else:
                 oldrev, newrev = l.split(':')
                 state[repo[oldrev].rev()] = repo[newrev].rev()
         repo.ui.debug('rebase status resumed\n')
         return originalwd, target, state, collapse, keep, keepbranches, external
     except IOError, err:
         if err.errno != errno.ENOENT:
             raise
         raise util.Abort(_('no rebase in progress'))
 
 def abort(repo, originalwd, target, state):
     'Restore the repository to its original state'
     if set(repo.changelog.descendants(target)) - set(state.values()):
         repo.ui.warn(_("warning: new changesets detected on target branch, "
                                                     "not stripping\n"))
     else:
         # Strip from the first rebased revision
         merge.update(repo, repo[originalwd].rev(), False, True, False)
         rebased = filter(lambda x: x > -1, state.values())
         if rebased:
             strippoint = min(rebased)
             repair.strip(repo.ui, repo, repo[strippoint].node(), "strip")
         clearstatus(repo)
         repo.ui.status(_('rebase aborted\n'))
 
 def buildstate(repo, dest, src, base, detach):
     'Define which revisions are going to be rebased and where'
     targetancestors = set()
     detachset = set()
 
     if not dest:
         # Destination defaults to the latest revision in the current branch
         branch = repo[None].branch()
         dest = repo[branch].rev()
     else:
         if 'qtip' in repo.tags() and (repo[dest].hex() in
                                 [s.rev for s in repo.mq.applied]):
             raise util.Abort(_('cannot rebase onto an applied mq patch'))
         dest = repo[dest].rev()
 
     if src:
         commonbase = repo[src].ancestor(repo[dest])
         if commonbase == repo[src]:
             raise util.Abort(_('source is ancestor of destination'))
         if commonbase == repo[dest]:
             raise util.Abort(_('source is descendant of destination'))
         source = repo[src].rev()
         if detach:
             # We need to keep track of source's ancestors up to the common base
             srcancestors = set(repo.changelog.ancestors(source))
             baseancestors = set(repo.changelog.ancestors(commonbase.rev()))
             detachset = srcancestors - baseancestors
             detachset.remove(commonbase.rev())
     else:
         if base:
             cwd = repo[base].rev()
         else:
             cwd = repo['.'].rev()
 
         if cwd == dest:
             repo.ui.debug('source and destination are the same\n')
             return None
 
         targetancestors = set(repo.changelog.ancestors(dest))
         if cwd in targetancestors:
             repo.ui.debug('source is ancestor of destination\n')
             return None
 
         cwdancestors = set(repo.changelog.ancestors(cwd))
         if dest in cwdancestors:
             repo.ui.debug('source is descendant of destination\n')
             return None
 
         cwdancestors.add(cwd)
         rebasingbranch = cwdancestors - targetancestors
         source = min(rebasingbranch)
 
     repo.ui.debug('rebase onto %d starting from %d\n' % (dest, source))
     state = dict.fromkeys(repo.changelog.descendants(source), nullrev)
     state.update(dict.fromkeys(detachset, nullmerge))
     state[source] = nullrev
     return repo['.'].rev(), repo[dest].rev(), state
 
 def pullrebase(orig, ui, repo, *args, **opts):
     'Call rebase after pull if the latter has been invoked with --rebase'
     if opts.get('rebase'):
         if opts.get('update'):
             del opts['update']
             ui.debug('--update and --rebase are not compatible, ignoring '
                      'the update flag\n')
 
         cmdutil.bail_if_changed(repo)
         revsprepull = len(repo)
         orig(ui, repo, *args, **opts)
         revspostpull = len(repo)
         if revspostpull > revsprepull:
             rebase(ui, repo, **opts)
             branch = repo[None].branch()
             dest = repo[branch].rev()
             if dest != repo['.'].rev():
                 # there was nothing to rebase we force an update
                 merge.update(repo, dest, False, False, False)
     else:
         orig(ui, repo, *args, **opts)
 
 def uisetup(ui):
     'Replace pull with a decorator to provide --rebase option'
     entry = extensions.wrapcommand(commands.table, 'pull', pullrebase)
     entry[1].append(('', 'rebase', None,
                      _("rebase working directory to branch head"))
 )
 
 cmdtable = {
 "rebase":
         (rebase,
         [
         ('s', 'source', '', _('rebase from a given revision')),
         ('b', 'base', '', _('rebase from the base of a given revision')),
         ('d', 'dest', '', _('rebase onto a given revision')),
         ('', 'collapse', False, _('collapse the rebased changesets')),
         ('', 'keep', False, _('keep original changesets')),
         ('', 'keepbranches', False, _('keep original branch names')),
         ('', 'detach', False, _('force detaching of source from its original '
                                 'branch')),
         ('c', 'continue', False, _('continue an interrupted rebase')),
-        ('a', 'abort', False, _('abort an interrupted rebase')),] +
+        ('a', 'abort', False, _('abort an interrupted rebase'))] +
          templateopts,
         _('hg rebase [-s REV | -b REV] [-d REV] [--collapse] [--detach] '
                         '[--keep] [--keepbranches] | [-c] | [-a]')),
 }

mercurial/commands.py

@@ -1,3808 +1,3809 b''
 # commands.py - command processing for mercurial
 #
 # Copyright 2005-2007 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 from node import hex, nullid, nullrev, short
 from lock import release
 from i18n import _, gettext
 import os, re, sys, difflib, time, tempfile
 import hg, util, revlog, bundlerepo, extensions, copies, error
 import patch, help, mdiff, url, encoding, templatekw
 import archival, changegroup, cmdutil, sshserver, hbisect
 from hgweb import server
 import merge as merge_
 import minirst
 
 # Commands start here, listed alphabetically
 
 def add(ui, repo, *pats, **opts):
     """add the specified files on the next commit
 
     Schedule files to be version controlled and added to the
     repository.
 
     The files will be added to the repository at the next commit. To
     undo an add before that, see hg forget.
 
     If no names are given, add all files to the repository.
     """
 
     bad = []
     names = []
     m = cmdutil.match(repo, pats, opts)
     oldbad = m.bad
     m.bad = lambda x, y: bad.append(x) or oldbad(x, y)
 
     for f in repo.walk(m):
         exact = m.exact(f)
         if exact or f not in repo.dirstate:
             names.append(f)
             if ui.verbose or not exact:
                 ui.status(_('adding %s\n') % m.rel(f))
     if not opts.get('dry_run'):
         bad += [f for f in repo.add(names) if f in m.files()]
     return bad and 1 or 0
 
 def addremove(ui, repo, *pats, **opts):
     """add all new files, delete all missing files
 
     Add all new files and remove all missing files from the
     repository.
 
     New files are ignored if they match any of the patterns in
     .hgignore. As with add, these changes take effect at the next
     commit.
 
     Use the -s/--similarity option to detect renamed files. With a
     parameter greater than 0, this compares every removed file with
     every added file and records those similar enough as renames. This
     option takes a percentage between 0 (disabled) and 100 (files must
     be identical) as its parameter. Detecting renamed files this way
     can be expensive.
     """
     try:
         sim = float(opts.get('similarity') or 0)
     except ValueError:
         raise util.Abort(_('similarity must be a number'))
     if sim < 0 or sim > 100:
         raise util.Abort(_('similarity must be between 0 and 100'))
     return cmdutil.addremove(repo, pats, opts, similarity=sim / 100.0)
 
 def annotate(ui, repo, *pats, **opts):
     """show changeset information by line for each file
 
     List changes in files, showing the revision id responsible for
     each line
 
     This command is useful for discovering when a change was made and
     by whom.
 
     Without the -a/--text option, annotate will avoid processing files
     it detects as binary. With -a, annotate will annotate the file
     anyway, although the results will probably be neither useful
     nor desirable.
     """
     datefunc = ui.quiet and util.shortdate or util.datestr
     getdate = util.cachefunc(lambda x: datefunc(x[0].date()))
 
     if not pats:
         raise util.Abort(_('at least one filename or pattern is required'))
 
     opmap = [('user', lambda x: ui.shortuser(x[0].user())),
              ('number', lambda x: str(x[0].rev())),
              ('changeset', lambda x: short(x[0].node())),
              ('date', getdate),
              ('file', lambda x: x[0].path()),
             ]
 
     if (not opts.get('user') and not opts.get('changeset')
         and not opts.get('date') and not opts.get('file')):
         opts['number'] = 1
 
     linenumber = opts.get('line_number') is not None
     if linenumber and (not opts.get('changeset')) and (not opts.get('number')):
         raise util.Abort(_('at least one of -n/-c is required for -l'))
 
     funcmap = [func for op, func in opmap if opts.get(op)]
     if linenumber:
         lastfunc = funcmap[-1]
         funcmap[-1] = lambda x: "%s:%s" % (lastfunc(x), x[1])
 
     ctx = repo[opts.get('rev')]
     m = cmdutil.match(repo, pats, opts)
     follow = not opts.get('no_follow')
     for abs in ctx.walk(m):
         fctx = ctx[abs]
         if not opts.get('text') and util.binary(fctx.data()):
             ui.write(_("%s: binary file\n") % ((pats and m.rel(abs)) or abs))
             continue
 
         lines = fctx.annotate(follow=follow, linenumber=linenumber)
         pieces = []
 
         for f in funcmap:
             l = [f(n) for n, dummy in lines]
             if l:
                 ml = max(map(len, l))
                 pieces.append(["%*s" % (ml, x) for x in l])
 
         if pieces:
             for p, l in zip(zip(*pieces), lines):
                 ui.write("%s: %s" % (" ".join(p), l[1]))
 
 def archive(ui, repo, dest, **opts):
     '''create an unversioned archive of a repository revision
 
     By default, the revision used is the parent of the working
     directory; use -r/--rev to specify a different revision.
 
     To specify the type of archive to create, use -t/--type. Valid
     types are:
 
     :``files``: a directory full of files (default)
     :``tar``:   tar archive, uncompressed
     :``tbz2``:  tar archive, compressed using bzip2
     :``tgz``:   tar archive, compressed using gzip
     :``uzip``:  zip archive, uncompressed
     :``zip``:   zip archive, compressed using deflate
 
     The exact name of the destination archive or directory is given
     using a format string; see 'hg help export' for details.
 
     Each member added to an archive file has a directory prefix
     prepended. Use -p/--prefix to specify a format string for the
     prefix. The default is the basename of the archive, with suffixes
     removed.
     '''
 
     ctx = repo[opts.get('rev')]
     if not ctx:
         raise util.Abort(_('no working directory: please specify a revision'))
     node = ctx.node()
     dest = cmdutil.make_filename(repo, dest, node)
     if os.path.realpath(dest) == repo.root:
         raise util.Abort(_('repository root cannot be destination'))
     matchfn = cmdutil.match(repo, [], opts)
     kind = opts.get('type') or 'files'
     prefix = opts.get('prefix')
     if dest == '-':
         if kind == 'files':
             raise util.Abort(_('cannot archive plain files to stdout'))
         dest = sys.stdout
         if not prefix:
             prefix = os.path.basename(repo.root) + '-%h'
     prefix = cmdutil.make_filename(repo, prefix, node)
     archival.archive(repo, dest, node, kind, not opts.get('no_decode'),
                      matchfn, prefix)
 
 def backout(ui, repo, node=None, rev=None, **opts):
     '''reverse effect of earlier changeset
 
     Commit the backed out changes as a new changeset. The new
     changeset is a child of the backed out changeset.
 
     If you backout a changeset other than the tip, a new head is
     created. This head will be the new tip and you should merge this
     backout changeset with another head.
 
     The --merge option remembers the parent of the working directory
     before starting the backout, then merges the new head with that
     changeset afterwards. This saves you from doing the merge by hand.
     The result of this merge is not committed, as with a normal merge.
 
     See 'hg help dates' for a list of formats valid for -d/--date.
     '''
     if rev and node:
         raise util.Abort(_("please specify just one revision"))
 
     if not rev:
         rev = node
 
     if not rev:
         raise util.Abort(_("please specify a revision to backout"))
 
     date = opts.get('date')
     if date:
         opts['date'] = util.parsedate(date)
 
     cmdutil.bail_if_changed(repo)
     node = repo.lookup(rev)
 
     op1, op2 = repo.dirstate.parents()
     a = repo.changelog.ancestor(op1, node)
     if a != node:
         raise util.Abort(_('cannot backout change on a different branch'))
 
     p1, p2 = repo.changelog.parents(node)
     if p1 == nullid:
         raise util.Abort(_('cannot backout a change with no parents'))
     if p2 != nullid:
         if not opts.get('parent'):
             raise util.Abort(_('cannot backout a merge changeset without '
                                '--parent'))
         p = repo.lookup(opts['parent'])
         if p not in (p1, p2):
             raise util.Abort(_('%s is not a parent of %s') %
                              (short(p), short(node)))
         parent = p
     else:
         if opts.get('parent'):
             raise util.Abort(_('cannot use --parent on non-merge changeset'))
         parent = p1
 
     # the backout should appear on the same branch
     branch = repo.dirstate.branch()
     hg.clean(repo, node, show_stats=False)
     repo.dirstate.setbranch(branch)
     revert_opts = opts.copy()
     revert_opts['date'] = None
     revert_opts['all'] = True
     revert_opts['rev'] = hex(parent)
     revert_opts['no_backup'] = None
     revert(ui, repo, **revert_opts)
     commit_opts = opts.copy()
     commit_opts['addremove'] = False
     if not commit_opts['message'] and not commit_opts['logfile']:
         # we don't translate commit messages
         commit_opts['message'] = "Backed out changeset %s" % short(node)
         commit_opts['force_editor'] = True
     commit(ui, repo, **commit_opts)
     def nice(node):
         return '%d:%s' % (repo.changelog.rev(node), short(node))
     ui.status(_('changeset %s backs out changeset %s\n') %
               (nice(repo.changelog.tip()), nice(node)))
     if op1 != node:
         hg.clean(repo, op1, show_stats=False)
         if opts.get('merge'):
             ui.status(_('merging with changeset %s\n')
                       % nice(repo.changelog.tip()))
             hg.merge(repo, hex(repo.changelog.tip()))
         else:
             ui.status(_('the backout changeset is a new head - '
                         'do not forget to merge\n'))
             ui.status(_('(use "backout --merge" '
                         'if you want to auto-merge)\n'))
 
 def bisect(ui, repo, rev=None, extra=None, command=None,
                reset=None, good=None, bad=None, skip=None, noupdate=None):
     """subdivision search of changesets
 
     This command helps to find changesets which introduce problems. To
     use, mark the earliest changeset you know exhibits the problem as
     bad, then mark the latest changeset which is free from the problem
     as good. Bisect will update your working directory to a revision
     for testing (unless the -U/--noupdate option is specified). Once
     you have performed tests, mark the working directory as good or
     bad, and bisect will either update to another candidate changeset
     or announce that it has found the bad revision.
 
     As a shortcut, you can also use the revision argument to mark a
     revision as good or bad without checking it out first.
 
     If you supply a command, it will be used for automatic bisection.
     Its exit status will be used to mark revisions as good or bad:
     status 0 means good, 125 means to skip the revision, 127
     (command not found) will abort the bisection, and any other
     non-zero exit status means the revision is bad.
     """
     def print_result(nodes, good):
         displayer = cmdutil.show_changeset(ui, repo, {})
         if len(nodes) == 1:
             # narrowed it down to a single revision
             if good:
                 ui.write(_("The first good revision is:\n"))
             else:
                 ui.write(_("The first bad revision is:\n"))
             displayer.show(repo[nodes[0]])
         else:
             # multiple possible revisions
             if good:
                 ui.write(_("Due to skipped revisions, the first "
                         "good revision could be any of:\n"))
             else:
                 ui.write(_("Due to skipped revisions, the first "
                         "bad revision could be any of:\n"))
             for n in nodes:
                 displayer.show(repo[n])
         displayer.close()
 
     def check_state(state, interactive=True):
         if not state['good'] or not state['bad']:
             if (good or bad or skip or reset) and interactive:
                 return
             if not state['good']:
                 raise util.Abort(_('cannot bisect (no known good revisions)'))
             else:
                 raise util.Abort(_('cannot bisect (no known bad revisions)'))
         return True
 
     # backward compatibility
     if rev in "good bad reset init".split():
         ui.warn(_("(use of 'hg bisect <cmd>' is deprecated)\n"))
         cmd, rev, extra = rev, extra, None
         if cmd == "good":
             good = True
         elif cmd == "bad":
             bad = True
         else:
             reset = True
     elif extra or good + bad + skip + reset + bool(command) > 1:
         raise util.Abort(_('incompatible arguments'))
 
     if reset:
         p = repo.join("bisect.state")
         if os.path.exists(p):
             os.unlink(p)
         return
 
     state = hbisect.load_state(repo)
 
     if command:
         changesets = 1
         try:
             while changesets:
                 # update state
                 status = util.system(command)
                 if status == 125:
                     transition = "skip"
                 elif status == 0:
                     transition = "good"
                 # status < 0 means process was killed
                 elif status == 127:
                     raise util.Abort(_("failed to execute %s") % command)
                 elif status < 0:
                     raise util.Abort(_("%s killed") % command)
                 else:
                     transition = "bad"
                 ctx = repo[rev or '.']
                 state[transition].append(ctx.node())
                 ui.status(_('Changeset %d:%s: %s\n') % (ctx, ctx, transition))
                 check_state(state, interactive=False)
                 # bisect
                 nodes, changesets, good = hbisect.bisect(repo.changelog, state)
                 # update to next check
                 cmdutil.bail_if_changed(repo)
                 hg.clean(repo, nodes[0], show_stats=False)
         finally:
             hbisect.save_state(repo, state)
         return print_result(nodes, good)
 
     # update state
     node = repo.lookup(rev or '.')
     if good or bad or skip:
         if good:
             state['good'].append(node)
         elif bad:
             state['bad'].append(node)
         elif skip:
             state['skip'].append(node)
         hbisect.save_state(repo, state)
 
     if not check_state(state):
         return
 
     # actually bisect
     nodes, changesets, good = hbisect.bisect(repo.changelog, state)
     if changesets == 0:
         print_result(nodes, good)
     else:
         assert len(nodes) == 1 # only a single node can be tested next
         node = nodes[0]
         # compute the approximate number of remaining tests
         tests, size = 0, 2
         while size <= changesets:
             tests, size = tests + 1, size * 2
         rev = repo.changelog.rev(node)
         ui.write(_("Testing changeset %d:%s "
                    "(%d changesets remaining, ~%d tests)\n")
                  % (rev, short(node), changesets, tests))
         if not noupdate:
             cmdutil.bail_if_changed(repo)
             return hg.clean(repo, node)
 
 def branch(ui, repo, label=None, **opts):
     """set or show the current branch name
 
     With no argument, show the current branch name. With one argument,
     set the working directory branch name (the branch will not exist
     in the repository until the next commit). Standard practice
     recommends that primary development take place on the 'default'
     branch.
 
     Unless -f/--force is specified, branch will not let you set a
     branch name that already exists, even if it's inactive.
 
     Use -C/--clean to reset the working directory branch to that of
     the parent of the working directory, negating a previous branch
     change.
 
     Use the command 'hg update' to switch to an existing branch. Use
     'hg commit --close-branch' to mark this branch as closed.
     """
 
     if opts.get('clean'):
         label = repo[None].parents()[0].branch()
         repo.dirstate.setbranch(label)
         ui.status(_('reset working directory to branch %s\n') % label)
     elif label:
         utflabel = encoding.fromlocal(label)
         if not opts.get('force') and utflabel in repo.branchtags():
             if label not in [p.branch() for p in repo.parents()]:
                 raise util.Abort(_('a branch of the same name already exists'
                                    ' (use --force to override)'))
         repo.dirstate.setbranch(utflabel)
         ui.status(_('marked working directory as branch %s\n') % label)
     else:
         ui.write("%s\n" % encoding.tolocal(repo.dirstate.branch()))
 
 def branches(ui, repo, active=False, closed=False):
     """list repository named branches
 
     List the repository's named branches, indicating which ones are
     inactive. If -c/--closed is specified, also list branches which have
     been marked closed (see hg commit --close-branch).
 
     If -a/--active is specified, only show active branches. A branch
     is considered active if it contains repository heads.
 
     Use the command 'hg update' to switch to an existing branch.
     """
 
     hexfunc = ui.debugflag and hex or short
     activebranches = [repo[n].branch() for n in repo.heads()]
     def testactive(tag, node):
         realhead = tag in activebranches
         open = node in repo.branchheads(tag, closed=False)
         return realhead and open
     branches = sorted([(testactive(tag, node), repo.changelog.rev(node), tag)
                           for tag, node in repo.branchtags().items()],
                       reverse=True)
 
     for isactive, node, tag in branches:
         if (not active) or isactive:
             encodedtag = encoding.tolocal(tag)
             if ui.quiet:
                 ui.write("%s\n" % encodedtag)
             else:
                 hn = repo.lookup(node)
                 if isactive:
                     notice = ''
                 elif hn not in repo.branchheads(tag, closed=False):
                     if not closed:
                         continue
                     notice = _(' (closed)')
                 else:
                     notice = _(' (inactive)')
                 rev = str(node).rjust(31 - encoding.colwidth(encodedtag))
                 data = encodedtag, rev, hexfunc(hn), notice
                 ui.write("%s %s:%s%s\n" % data)
 
 def bundle(ui, repo, fname, dest=None, **opts):
     """create a changegroup file
 
     Generate a compressed changegroup file collecting changesets not
     known to be in another repository.
 
     If you omit the destination repository, then hg assumes the
     destination will have all the nodes you specify with --base
     parameters. To create a bundle containing all changesets, use
     -a/--all (or --base null).
 
     You can change compression method with the -t/--type option.
     The available compression methods are: none, bzip2, and
     gzip (by default, bundles are compressed using bzip2).
 
     The bundle file can then be transferred using conventional means
     and applied to another repository with the unbundle or pull
     command. This is useful when direct push and pull are not
     available or when exporting an entire repository is undesirable.
 
     Applying bundles preserves all changeset contents including
     permissions, copy/rename information, and revision history.
     """
     revs = opts.get('rev') or None
     if revs:
         revs = [repo.lookup(rev) for rev in revs]
     if opts.get('all'):
         base = ['null']
     else:
         base = opts.get('base')
     if base:
         if dest:
             raise util.Abort(_("--base is incompatible with specifying "
                                "a destination"))
         base = [repo.lookup(rev) for rev in base]
         # create the right base
         # XXX: nodesbetween / changegroup* should be "fixed" instead
         o = []
         has = set((nullid,))
         for n in base:
             has.update(repo.changelog.reachable(n))
         if revs:
             visit = list(revs)
         else:
             visit = repo.changelog.heads()
         seen = {}
         while visit:
             n = visit.pop(0)
             parents = [p for p in repo.changelog.parents(n) if p not in has]
             if len(parents) == 0:
                 o.insert(0, n)
             else:
                 for p in parents:
                     if p not in seen:
                         seen[p] = 1
                         visit.append(p)
     else:
         dest = ui.expandpath(dest or 'default-push', dest or 'default')
         dest, branches = hg.parseurl(dest, opts.get('branch'))
         other = hg.repository(cmdutil.remoteui(repo, opts), dest)
         revs, checkout = hg.addbranchrevs(repo, other, branches, revs)
         o = repo.findoutgoing(other, force=opts.get('force'))
 
     if revs:
         cg = repo.changegroupsubset(o, revs, 'bundle')
     else:
         cg = repo.changegroup(o, 'bundle')
 
     bundletype = opts.get('type', 'bzip2').lower()
     btypes = {'none': 'HG10UN', 'bzip2': 'HG10BZ', 'gzip': 'HG10GZ'}
     bundletype = btypes.get(bundletype)
     if bundletype not in changegroup.bundletypes:
         raise util.Abort(_('unknown bundle type specified with --type'))
 
     changegroup.writebundle(cg, fname, bundletype)
 
 def cat(ui, repo, file1, *pats, **opts):
     """output the current or given revision of files
 
     Print the specified files as they were at the given revision. If
     no revision is given, the parent of the working directory is used,
     or tip if no revision is checked out.
 
     Output may be to a file, in which case the name of the file is
     given using a format string. The formatting rules are the same as
     for the export command, with the following additions:
 
     :``%s``: basename of file being printed
     :``%d``: dirname of file being printed, or '.' if in repository root
     :``%p``: root-relative path name of file being printed
     """
     ctx = repo[opts.get('rev')]
     err = 1
     m = cmdutil.match(repo, (file1,) + pats, opts)
     for abs in ctx.walk(m):
         fp = cmdutil.make_file(repo, opts.get('output'), ctx.node(), pathname=abs)
         data = ctx[abs].data()
         if opts.get('decode'):
             data = repo.wwritedata(abs, data)
         fp.write(data)
         err = 0
     return err
 
 def clone(ui, source, dest=None, **opts):
     """make a copy of an existing repository
 
     Create a copy of an existing repository in a new directory.
 
     If no destination directory name is specified, it defaults to the
     basename of the source.
 
     The location of the source is added to the new repository's
     .hg/hgrc file, as the default to be used for future pulls.
 
     See 'hg help urls' for valid source format details.
 
     It is possible to specify an ``ssh://`` URL as the destination, but no
     .hg/hgrc and working directory will be created on the remote side.
     Please see 'hg help urls' for important details about ``ssh://`` URLs.
 
     If the -U/--noupdate option is specified, the new clone will contain
     only a repository (.hg) and no working copy (the working copy parent
     will be the null changeset). Otherwise, clone will initially check
     out (in order of precedence):
 
     a) the changeset, tag or branch specified with -u/--updaterev
     b) the changeset, tag or branch given with the first -r/--rev
     c) the branch given with the first -b/--branch
     d) the branch given with the url#branch source syntax
     e) the head of the default branch
 
     Use 'hg clone -u . src dst' to checkout the source repository's
     parent changeset (applicable for local source repositories only).
 
     A set of changesets (tags, or branch names) to pull may be specified
     by listing each changeset (tag, or branch name) with -r/--rev.
     If -r/--rev is used, the cloned repository will contain only a subset
     of the changesets of the source repository. Only the set of changesets
     defined by all -r/--rev options (including all their ancestors)
     will be pulled into the destination repository.
     No subsequent changesets (including subsequent tags) will be present
     in the destination.
 
     Using -r/--rev (or 'clone src#rev dest') implies --pull, even for
     local source repositories.
 
     For efficiency, hardlinks are used for cloning whenever the source
     and destination are on the same filesystem (note this applies only
     to the repository data, not to the checked out files). Some
     filesystems, such as AFS, implement hardlinking incorrectly, but
     do not report errors. In these cases, use the --pull option to
     avoid hardlinking.
 
     In some cases, you can clone repositories and checked out files
     using full hardlinks with ::
 
       $ cp -al REPO REPOCLONE
 
     This is the fastest way to clone, but it is not always safe. The
     operation is not atomic (making sure REPO is not modified during
     the operation is up to you) and you have to make sure your editor
     breaks hardlinks (Emacs and most Linux Kernel tools do so). Also,
     this is not compatible with certain extensions that place their
     metadata under the .hg directory, such as mq.
     """
     if opts.get('noupdate') and opts.get('updaterev'):
         raise util.Abort(_("cannot specify both --noupdate and --updaterev"))
 
     hg.clone(cmdutil.remoteui(ui, opts), source, dest,
              pull=opts.get('pull'),
              stream=opts.get('uncompressed'),
              rev=opts.get('rev'),
              update=opts.get('updaterev') or not opts.get('noupdate'),
              branch=opts.get('branch'))
 
 def commit(ui, repo, *pats, **opts):
     """commit the specified files or all outstanding changes
 
     Commit changes to the given files into the repository. Unlike a
     centralized RCS, this operation is a local operation. See hg push
     for a way to actively distribute your changes.
 
     If a list of files is omitted, all changes reported by "hg status"
     will be committed.
 
     If you are committing the result of a merge, do not provide any
     filenames or -I/-X filters.
 
     If no commit message is specified, the configured editor is
     started to prompt you for a message.
 
     See 'hg help dates' for a list of formats valid for -d/--date.
     """
     extra = {}
     if opts.get('close_branch'):
         extra['close'] = 1
     e = cmdutil.commiteditor
     if opts.get('force_editor'):
         e = cmdutil.commitforceeditor
 
     def commitfunc(ui, repo, message, match, opts):
         return repo.commit(message, opts.get('user'), opts.get('date'), match,
                            editor=e, extra=extra)
 
     node = cmdutil.commit(ui, repo, commitfunc, pats, opts)
     if not node:
         ui.status(_("nothing changed\n"))
         return
     cl = repo.changelog
     rev = cl.rev(node)
     parents = cl.parentrevs(rev)
     if rev - 1 in parents:
         # one of the parents was the old tip
         pass
     elif (parents == (nullrev, nullrev) or
           len(cl.heads(cl.node(parents[0]))) > 1 and
           (parents[1] == nullrev or len(cl.heads(cl.node(parents[1]))) > 1)):
         ui.status(_('created new head\n'))
 
     if ui.debugflag:
         ui.write(_('committed changeset %d:%s\n') % (rev, hex(node)))
     elif ui.verbose:
         ui.write(_('committed changeset %d:%s\n') % (rev, short(node)))
 
 def copy(ui, repo, *pats, **opts):
     """mark files as copied for the next commit
 
     Mark dest as having copies of source files. If dest is a
     directory, copies are put in that directory. If dest is a file,
     the source must be a single file.
 
     By default, this command copies the contents of files as they
     exist in the working directory. If invoked with -A/--after, the
     operation is recorded, but no copying is performed.
 
     This command takes effect with the next commit. To undo a copy
     before that, see hg revert.
     """
     wlock = repo.wlock(False)
     try:
         return cmdutil.copy(ui, repo, pats, opts)
     finally:
         wlock.release()
 
 def debugancestor(ui, repo, *args):
     """find the ancestor revision of two revisions in a given index"""
     if len(args) == 3:
         index, rev1, rev2 = args
         r = revlog.revlog(util.opener(os.getcwd(), audit=False), index)
         lookup = r.lookup
     elif len(args) == 2:
         if not repo:
             raise util.Abort(_("There is no Mercurial repository here "
                                "(.hg not found)"))
         rev1, rev2 = args
         r = repo.changelog
         lookup = repo.lookup
     else:
         raise util.Abort(_('either two or three arguments required'))
     a = r.ancestor(lookup(rev1), lookup(rev2))
     ui.write("%d:%s\n" % (r.rev(a), hex(a)))
 
 def debugcommands(ui, cmd='', *args):
     for cmd, vals in sorted(table.iteritems()):
         cmd = cmd.split('|')[0].strip('^')
         opts = ', '.join([i[1] for i in vals[1]])
         ui.write('%s: %s\n' % (cmd, opts))
 
 def debugcomplete(ui, cmd='', **opts):
     """returns the completion list associated with the given command"""
 
     if opts.get('options'):
         options = []
         otables = [globalopts]
         if cmd:
             aliases, entry = cmdutil.findcmd(cmd, table, False)
             otables.append(entry[1])
         for t in otables:
             for o in t:
                 if o[0]:
                     options.append('-%s' % o[0])
                 options.append('--%s' % o[1])
         ui.write("%s\n" % "\n".join(options))
         return
 
     cmdlist = cmdutil.findpossible(cmd, table)
     if ui.verbose:
         cmdlist = [' '.join(c[0]) for c in cmdlist.values()]
     ui.write("%s\n" % "\n".join(sorted(cmdlist)))
 
 def debugfsinfo(ui, path = "."):
     open('.debugfsinfo', 'w').write('')
     ui.write('exec: %s\n' % (util.checkexec(path) and 'yes' or 'no'))
     ui.write('symlink: %s\n' % (util.checklink(path) and 'yes' or 'no'))
     ui.write('case-sensitive: %s\n' % (util.checkcase('.debugfsinfo')
                                 and 'yes' or 'no'))
     os.unlink('.debugfsinfo')
 
 def debugrebuildstate(ui, repo, rev="tip"):
     """rebuild the dirstate as it would look like for the given revision"""
     ctx = repo[rev]
     wlock = repo.wlock()
     try:
         repo.dirstate.rebuild(ctx.node(), ctx.manifest())
     finally:
         wlock.release()
 
 def debugcheckstate(ui, repo):
     """validate the correctness of the current dirstate"""
     parent1, parent2 = repo.dirstate.parents()
     m1 = repo[parent1].manifest()
     m2 = repo[parent2].manifest()
     errors = 0
     for f in repo.dirstate:
         state = repo.dirstate[f]
         if state in "nr" and f not in m1:
             ui.warn(_("%s in state %s, but not in manifest1\n") % (f, state))
             errors += 1
         if state in "a" and f in m1:
             ui.warn(_("%s in state %s, but also in manifest1\n") % (f, state))
             errors += 1
         if state in "m" and f not in m1 and f not in m2:
             ui.warn(_("%s in state %s, but not in either manifest\n") %
                     (f, state))
             errors += 1
     for f in m1:
         state = repo.dirstate[f]
         if state not in "nrm":
             ui.warn(_("%s in manifest1, but listed as state %s") % (f, state))
             errors += 1
     if errors:
         error = _(".hg/dirstate inconsistent with current parent's manifest")
         raise util.Abort(error)
 
 def showconfig(ui, repo, *values, **opts):
     """show combined config settings from all hgrc files
 
     With no arguments, print names and values of all config items.
 
     With one argument of the form section.name, print just the value
     of that config item.
 
     With multiple arguments, print names and values of all config
     items with matching section names.
 
     With --debug, the source (filename and line number) is printed
     for each config item.
     """
 
     untrusted = bool(opts.get('untrusted'))
     if values:
         if len([v for v in values if '.' in v]) > 1:
             raise util.Abort(_('only one config item permitted'))
     for section, name, value in ui.walkconfig(untrusted=untrusted):
         sectname = section + '.' + name
         if values:
             for v in values:
                 if v == section:
                     ui.debug('%s: ' %
                              ui.configsource(section, name, untrusted))
                     ui.write('%s=%s\n' % (sectname, value))
                 elif v == sectname:
                     ui.debug('%s: ' %
                              ui.configsource(section, name, untrusted))
                     ui.write(value, '\n')
         else:
             ui.debug('%s: ' %
                      ui.configsource(section, name, untrusted))
             ui.write('%s=%s\n' % (sectname, value))
 
 def debugsetparents(ui, repo, rev1, rev2=None):
     """manually set the parents of the current working directory
 
     This is useful for writing repository conversion tools, but should
     be used with care.
     """
 
     if not rev2:
         rev2 = hex(nullid)
 
     wlock = repo.wlock()
     try:
         repo.dirstate.setparents(repo.lookup(rev1), repo.lookup(rev2))
     finally:
         wlock.release()
 
 def debugstate(ui, repo, nodates=None):
     """show the contents of the current dirstate"""
     timestr = ""
     showdate = not nodates
     for file_, ent in sorted(repo.dirstate._map.iteritems()):
         if showdate:
             if ent[3] == -1:
                 # Pad or slice to locale representation
                 locale_len = len(time.strftime("%Y-%m-%d %H:%M:%S ",
                                                time.localtime(0)))
                 timestr = 'unset'
                 timestr = (timestr[:locale_len] +
                            ' ' * (locale_len - len(timestr)))
             else:
                 timestr = time.strftime("%Y-%m-%d %H:%M:%S ",
                                         time.localtime(ent[3]))
         if ent[1] & 020000:
             mode = 'lnk'
         else:
             mode = '%3o' % (ent[1] & 0777)
         ui.write("%c %s %10d %s%s\n" % (ent[0], mode, ent[2], timestr, file_))
     for f in repo.dirstate.copies():
         ui.write(_("copy: %s -> %s\n") % (repo.dirstate.copied(f), f))
 
 def debugsub(ui, repo, rev=None):
     if rev == '':
         rev = None
     for k, v in sorted(repo[rev].substate.items()):
         ui.write('path %s\n' % k)
         ui.write(' source   %s\n' % v[0])
         ui.write(' revision %s\n' % v[1])
 
 def debugdata(ui, file_, rev):
     """dump the contents of a data file revision"""
     r = revlog.revlog(util.opener(os.getcwd(), audit=False), file_[:-2] + ".i")
     try:
         ui.write(r.revision(r.lookup(rev)))
     except KeyError:
         raise util.Abort(_('invalid revision identifier %s') % rev)
 
 def debugdate(ui, date, range=None, **opts):
     """parse and display a date"""
     if opts["extended"]:
         d = util.parsedate(date, util.extendeddateformats)
     else:
         d = util.parsedate(date)
     ui.write("internal: %s %s\n" % d)
     ui.write("standard: %s\n" % util.datestr(d))
     if range:
         m = util.matchdate(range)
         ui.write("match: %s\n" % m(d[0]))
 
 def debugindex(ui, file_):
     """dump the contents of an index file"""
     r = revlog.revlog(util.opener(os.getcwd(), audit=False), file_)
     ui.write("   rev    offset  length   base linkrev"
              " nodeid       p1           p2\n")
     for i in r:
         node = r.node(i)
         try:
             pp = r.parents(node)
         except:
             pp = [nullid, nullid]
         ui.write("% 6d % 9d % 7d % 6d % 7d %s %s %s\n" % (
                 i, r.start(i), r.length(i), r.base(i), r.linkrev(i),
             short(node), short(pp[0]), short(pp[1])))
 
 def debugindexdot(ui, file_):
     """dump an index DAG as a graphviz dot file"""
     r = revlog.revlog(util.opener(os.getcwd(), audit=False), file_)
     ui.write("digraph G {\n")
     for i in r:
         node = r.node(i)
         pp = r.parents(node)
         ui.write("\t%d -> %d\n" % (r.rev(pp[0]), i))
         if pp[1] != nullid:
             ui.write("\t%d -> %d\n" % (r.rev(pp[1]), i))
     ui.write("}\n")
 
 def debuginstall(ui):
     '''test Mercurial installation'''
 
     def writetemp(contents):
         (fd, name) = tempfile.mkstemp(prefix="hg-debuginstall-")
         f = os.fdopen(fd, "wb")
         f.write(contents)
         f.close()
         return name
 
     problems = 0
 
     # encoding
     ui.status(_("Checking encoding (%s)...\n") % encoding.encoding)
     try:
         encoding.fromlocal("test")
     except util.Abort, inst:
         ui.write(" %s\n" % inst)
         ui.write(_(" (check that your locale is properly set)\n"))
         problems += 1
 
     # compiled modules
     ui.status(_("Checking extensions...\n"))
     try:
         import bdiff, mpatch, base85
     except Exception, inst:
         ui.write(" %s\n" % inst)
         ui.write(_(" One or more extensions could not be found"))
         ui.write(_(" (check that you compiled the extensions)\n"))
         problems += 1
 
     # templates
     ui.status(_("Checking templates...\n"))
     try:
         import templater
         templater.templater(templater.templatepath("map-cmdline.default"))
     except Exception, inst:
         ui.write(" %s\n" % inst)
         ui.write(_(" (templates seem to have been installed incorrectly)\n"))
         problems += 1
 
     # patch
     ui.status(_("Checking patch...\n"))
     patchproblems = 0
     a = "1\n2\n3\n4\n"
     b = "1\n2\n3\ninsert\n4\n"
     fa = writetemp(a)
     d = mdiff.unidiff(a, None, b, None, os.path.basename(fa),
         os.path.basename(fa))
     fd = writetemp(d)
 
     files = {}
     try:
         patch.patch(fd, ui, cwd=os.path.dirname(fa), files=files)
     except util.Abort, e:
         ui.write(_(" patch call failed:\n"))
         ui.write(" " + str(e) + "\n")
         patchproblems += 1
     else:
         if list(files) != [os.path.basename(fa)]:
             ui.write(_(" unexpected patch output!\n"))
             patchproblems += 1
         a = open(fa).read()
         if a != b:
             ui.write(_(" patch test failed!\n"))
             patchproblems += 1
 
     if patchproblems:
         if ui.config('ui', 'patch'):
             ui.write(_(" (Current patch tool may be incompatible with patch,"
                        " or misconfigured. Please check your .hgrc file)\n"))
         else:
             ui.write(_(" Internal patcher failure, please report this error"
                        " to http://mercurial.selenic.com/bts/\n"))
     problems += patchproblems
 
     os.unlink(fa)
     os.unlink(fd)
 
     # editor
     ui.status(_("Checking commit editor...\n"))
     editor = ui.geteditor()
     cmdpath = util.find_exe(editor) or util.find_exe(editor.split()[0])
     if not cmdpath:
         if editor == 'vi':
             ui.write(_(" No commit editor set and can't find vi in PATH\n"))
             ui.write(_(" (specify a commit editor in your .hgrc file)\n"))
         else:
             ui.write(_(" Can't find editor '%s' in PATH\n") % editor)
             ui.write(_(" (specify a commit editor in your .hgrc file)\n"))
             problems += 1
 
     # check username
     ui.status(_("Checking username...\n"))
     try:
         user = ui.username()
     except util.Abort, e:
         ui.write(" %s\n" % e)
         ui.write(_(" (specify a username in your .hgrc file)\n"))
         problems += 1
 
     if not problems:
         ui.status(_("No problems detected\n"))
     else:
         ui.write(_("%s problems detected,"
                    " please check your install!\n") % problems)
 
     return problems
 
 def debugrename(ui, repo, file1, *pats, **opts):
     """dump rename information"""
 
     ctx = repo[opts.get('rev')]
     m = cmdutil.match(repo, (file1,) + pats, opts)
     for abs in ctx.walk(m):
         fctx = ctx[abs]
         o = fctx.filelog().renamed(fctx.filenode())
         rel = m.rel(abs)
         if o:
             ui.write(_("%s renamed from %s:%s\n") % (rel, o[0], hex(o[1])))
         else:
             ui.write(_("%s not renamed\n") % rel)
 
 def debugwalk(ui, repo, *pats, **opts):
     """show how files match on given patterns"""
     m = cmdutil.match(repo, pats, opts)
     items = list(repo.walk(m))
     if not items:
         return
     fmt = 'f  %%-%ds  %%-%ds  %%s' % (
         max([len(abs) for abs in items]),
         max([len(m.rel(abs)) for abs in items]))
     for abs in items:
         line = fmt % (abs, m.rel(abs), m.exact(abs) and 'exact' or '')
         ui.write("%s\n" % line.rstrip())
 
 def diff(ui, repo, *pats, **opts):
     """diff repository (or selected files)
 
     Show differences between revisions for the specified files.
 
     Differences between files are shown using the unified diff format.
 
     NOTE: diff may generate unexpected results for merges, as it will
     default to comparing against the working directory's first parent
     changeset if no revisions are specified.
 
     When two revision arguments are given, then changes are shown
     between those revisions. If only one revision is specified then
     that revision is compared to the working directory, and, when no
     revisions are specified, the working directory files are compared
     to its parent.
 
     Without the -a/--text option, diff will avoid generating diffs of
     files it detects as binary. With -a, diff will generate a diff
     anyway, probably with undesirable results.
 
     Use the -g/--git option to generate diffs in the git extended diff
     format. For more information, read 'hg help diffs'.
     """
 
     revs = opts.get('rev')
     change = opts.get('change')
     stat = opts.get('stat')
     reverse = opts.get('reverse')
 
     if revs and change:
         msg = _('cannot specify --rev and --change at the same time')
         raise util.Abort(msg)
     elif change:
         node2 = repo.lookup(change)
         node1 = repo[node2].parents()[0].node()
     else:
         node1, node2 = cmdutil.revpair(repo, revs)
 
     if reverse:
         node1, node2 = node2, node1
 
     if stat:
         opts['unified'] = '0'
     diffopts = patch.diffopts(ui, opts)
 
     m = cmdutil.match(repo, pats, opts)
     it = patch.diff(repo, node1, node2, match=m, opts=diffopts)
     if stat:
         width = ui.interactive() and util.termwidth() or 80
         ui.write(patch.diffstat(util.iterlines(it), width=width,
                                 git=diffopts.git))
     else:
         for chunk in it:
             ui.write(chunk)
 
 def export(ui, repo, *changesets, **opts):
     """dump the header and diffs for one or more changesets
 
     Print the changeset header and diffs for one or more revisions.
 
     The information shown in the changeset header is: author, date,
     branch name (if non-default), changeset hash, parent(s) and commit
     comment.
 
     NOTE: export may generate unexpected diff output for merge
     changesets, as it will compare the merge changeset against its
     first parent only.
 
     Output may be to a file, in which case the name of the file is
     given using a format string. The formatting rules are as follows:
 
     :``%%``: literal "%" character
     :``%H``: changeset hash (40 bytes of hexadecimal)
     :``%N``: number of patches being generated
     :``%R``: changeset revision number
     :``%b``: basename of the exporting repository
     :``%h``: short-form changeset hash (12 bytes of hexadecimal)
     :``%n``: zero-padded sequence number, starting at 1
     :``%r``: zero-padded changeset revision number
 
     Without the -a/--text option, export will avoid generating diffs
     of files it detects as binary. With -a, export will generate a
     diff anyway, probably with undesirable results.
 
     Use the -g/--git option to generate diffs in the git extended diff
     format. See 'hg help diffs' for more information.
 
     With the --switch-parent option, the diff will be against the
     second parent. It can be useful to review a merge.
     """
     changesets += tuple(opts.get('rev', []))
     if not changesets:
         raise util.Abort(_("export requires at least one changeset"))
     revs = cmdutil.revrange(repo, changesets)
     if len(revs) > 1:
         ui.note(_('exporting patches:\n'))
     else:
         ui.note(_('exporting patch:\n'))
     patch.export(repo, revs, template=opts.get('output'),
                  switch_parent=opts.get('switch_parent'),
                  opts=patch.diffopts(ui, opts))
 
 def forget(ui, repo, *pats, **opts):
     """forget the specified files on the next commit
 
     Mark the specified files so they will no longer be tracked
     after the next commit.
 
     This only removes files from the current branch, not from the
     entire project history, and it does not delete them from the
     working directory.
 
     To undo a forget before the next commit, see hg add.
     """
 
     if not pats:
         raise util.Abort(_('no files specified'))
 
     m = cmdutil.match(repo, pats, opts)
     s = repo.status(match=m, clean=True)
     forget = sorted(s[0] + s[1] + s[3] + s[6])
 
     for f in m.files():
         if f not in repo.dirstate and not os.path.isdir(m.rel(f)):
             ui.warn(_('not removing %s: file is already untracked\n')
                     % m.rel(f))
 
     for f in forget:
         if ui.verbose or not m.exact(f):
             ui.status(_('removing %s\n') % m.rel(f))
 
     repo.remove(forget, unlink=False)
 
 def grep(ui, repo, pattern, *pats, **opts):
     """search for a pattern in specified files and revisions
 
     Search revisions of files for a regular expression.
 
     This command behaves differently than Unix grep. It only accepts
     Python/Perl regexps. It searches repository history, not the
     working directory. It always prints the revision number in which a
     match appears.
 
     By default, grep only prints output for the first revision of a
     file in which it finds a match. To get it to print every revision
     that contains a change in match status ("-" for a match that
     becomes a non-match, or "+" for a non-match that becomes a match),
     use the --all flag.
     """
     reflags = 0
     if opts.get('ignore_case'):
         reflags |= re.I
     try:
         regexp = re.compile(pattern, reflags)
     except Exception, inst:
         ui.warn(_("grep: invalid match pattern: %s\n") % inst)
         return None
     sep, eol = ':', '\n'
     if opts.get('print0'):
         sep = eol = '\0'
 
     getfile = util.lrucachefunc(repo.file)
 
     def matchlines(body):
         begin = 0
         linenum = 0
         while True:
             match = regexp.search(body, begin)
             if not match:
                 break
             mstart, mend = match.span()
             linenum += body.count('\n', begin, mstart) + 1
             lstart = body.rfind('\n', begin, mstart) + 1 or begin
             begin = body.find('\n', mend) + 1 or len(body)
             lend = begin - 1
             yield linenum, mstart - lstart, mend - lstart, body[lstart:lend]
 
     class linestate(object):
         def __init__(self, line, linenum, colstart, colend):
             self.line = line
             self.linenum = linenum
             self.colstart = colstart
             self.colend = colend
 
         def __hash__(self):
             return hash((self.linenum, self.line))
 
         def __eq__(self, other):
             return self.line == other.line
 
     matches = {}
     copies = {}
     def grepbody(fn, rev, body):
         matches[rev].setdefault(fn, [])
         m = matches[rev][fn]
         for lnum, cstart, cend, line in matchlines(body):
             s = linestate(line, lnum, cstart, cend)
             m.append(s)
 
     def difflinestates(a, b):
         sm = difflib.SequenceMatcher(None, a, b)
         for tag, alo, ahi, blo, bhi in sm.get_opcodes():
             if tag == 'insert':
                 for i in xrange(blo, bhi):
                     yield ('+', b[i])
             elif tag == 'delete':
                 for i in xrange(alo, ahi):
                     yield ('-', a[i])
             elif tag == 'replace':
                 for i in xrange(alo, ahi):
                     yield ('-', a[i])
                 for i in xrange(blo, bhi):
                     yield ('+', b[i])
 
     def display(fn, ctx, pstates, states):
         rev = ctx.rev()
         datefunc = ui.quiet and util.shortdate or util.datestr
         found = False
         filerevmatches = {}
         if opts.get('all'):
             iter = difflinestates(pstates, states)
         else:
             iter = [('', l) for l in states]
         for change, l in iter:
             cols = [fn, str(rev)]
             if opts.get('line_number'):
                 cols.append(str(l.linenum))
             if opts.get('all'):
                 cols.append(change)
             if opts.get('user'):
                 cols.append(ui.shortuser(ctx.user()))
             if opts.get('date'):
                 cols.append(datefunc(ctx.date()))
             if opts.get('files_with_matches'):
                 c = (fn, rev)
                 if c in filerevmatches:
                     continue
                 filerevmatches[c] = 1
             else:
                 cols.append(l.line)
             ui.write(sep.join(cols), eol)
             found = True
         return found
 
     skip = {}
     revfiles = {}
     matchfn = cmdutil.match(repo, pats, opts)
     found = False
     follow = opts.get('follow')
 
     def prep(ctx, fns):
         rev = ctx.rev()
         pctx = ctx.parents()[0]
         parent = pctx.rev()
         matches.setdefault(rev, {})
         matches.setdefault(parent, {})
         files = revfiles.setdefault(rev, [])
         for fn in fns:
             flog = getfile(fn)
             try:
                 fnode = ctx.filenode(fn)
             except error.LookupError:
                 continue
 
             copied = flog.renamed(fnode)
             copy = follow and copied and copied[0]
             if copy:
                 copies.setdefault(rev, {})[fn] = copy
             if fn in skip:
                 if copy:
                     skip[copy] = True
                 continue
             files.append(fn)
 
             if fn not in matches[rev]:
                 grepbody(fn, rev, flog.read(fnode))
 
             pfn = copy or fn
             if pfn not in matches[parent]:
                 try:
                     fnode = pctx.filenode(pfn)
                     grepbody(pfn, parent, flog.read(fnode))
                 except error.LookupError:
                     pass
 
     for ctx in cmdutil.walkchangerevs(repo, matchfn, opts, prep):
         rev = ctx.rev()
         parent = ctx.parents()[0].rev()
         for fn in sorted(revfiles.get(rev, [])):
             states = matches[rev][fn]
             copy = copies.get(rev, {}).get(fn)
             if fn in skip:
                 if copy:
                     skip[copy] = True
                 continue
             pstates = matches.get(parent, {}).get(copy or fn, [])
             if pstates or states:
                 r = display(fn, ctx, pstates, states)
                 found = found or r
                 if r and not opts.get('all'):
                     skip[fn] = True
                     if copy:
                         skip[copy] = True
         del matches[rev]
         del revfiles[rev]
 
 def heads(ui, repo, *branchrevs, **opts):
     """show current repository heads or show branch heads
 
     With no arguments, show all repository branch heads.
 
     Repository "heads" are changesets with no child changesets. They are
     where development generally takes place and are the usual targets
     for update and merge operations. Branch heads are changesets that have
     no child changeset on the same branch.
 
     If one or more REVs are given, only branch heads on the branches
     associated with the specified changesets are shown.
 
     If -c/--closed is specified, also show branch heads marked closed
     (see hg commit --close-branch).
 
     If STARTREV is specified, only those heads that are descendants of
     STARTREV will be displayed.
 
     If -t/--topo is specified, named branch mechanics will be ignored and only
     changesets without children will be shown.
     """
 
     if opts.get('rev'):
         start = repo.lookup(opts['rev'])
     else:
         start = None
 
     if opts.get('topo'):
         heads = [repo[h] for h in repo.heads(start)]
     else:
         heads = []
         for b, ls in repo.branchmap().iteritems():
             if start is None:
                 heads += [repo[h] for h in ls]
                 continue
             startrev = repo.changelog.rev(start)
             descendants = set(repo.changelog.descendants(startrev))
             descendants.add(startrev)
             rev = repo.changelog.rev
             heads += [repo[h] for h in ls if rev(h) in descendants]
 
     if branchrevs:
         decode, encode = encoding.fromlocal, encoding.tolocal
         branches = set(repo[decode(br)].branch() for br in branchrevs)
         heads = [h for h in heads if h.branch() in branches]
 
     if not opts.get('closed'):
         heads = [h for h in heads if not h.extra().get('close')]
 
     if opts.get('active') and branchrevs:
         dagheads = repo.heads(start)
         heads = [h for h in heads if h.node() in dagheads]
 
     if branchrevs:
         haveheads = set(h.branch() for h in heads)
         if branches - haveheads:
             headless = ', '.join(encode(b) for b in branches - haveheads)
             msg = _('no open branch heads found on branches %s')
             if opts.get('rev'):
                 msg += _(' (started at %s)' % opts['rev'])
             ui.warn((msg + '\n') % headless)
 
     if not heads:
         return 1
 
     heads = sorted(heads, key=lambda x: -x.rev())
     displayer = cmdutil.show_changeset(ui, repo, opts)
     for ctx in heads:
         displayer.show(ctx)
     displayer.close()
 
 def help_(ui, name=None, with_version=False, unknowncmd=False):
     """show help for a given topic or a help overview
 
     With no arguments, print a list of commands with short help messages.
 
     Given a topic, extension, or command name, print help for that
     topic."""
     option_lists = []
     textwidth = util.termwidth() - 2
 
     def addglobalopts(aliases):
         if ui.verbose:
             option_lists.append((_("global options:"), globalopts))
             if name == 'shortlist':
                 option_lists.append((_('use "hg help" for the full list '
                                        'of commands'), ()))
         else:
             if name == 'shortlist':
                 msg = _('use "hg help" for the full list of commands '
                         'or "hg -v" for details')
             elif aliases:
                 msg = _('use "hg -v help%s" to show aliases and '
                         'global options') % (name and " " + name or "")
             else:
                 msg = _('use "hg -v help %s" to show global options') % name
             option_lists.append((msg, ()))
 
     def helpcmd(name):
         if with_version:
             version_(ui)
             ui.write('\n')
 
         try:
             aliases, entry = cmdutil.findcmd(name, table, strict=unknowncmd)
         except error.AmbiguousCommand, inst:
             # py3k fix: except vars can't be used outside the scope of the
             # except block, nor can be used inside a lambda. python issue4617
             prefix = inst.args[0]
             select = lambda c: c.lstrip('^').startswith(prefix)
             helplist(_('list of commands:\n\n'), select)
             return
 
         # check if it's an invalid alias and display its error if it is
         if getattr(entry[0], 'badalias', False):
             if not unknowncmd:
                 entry[0](ui)
             return
 
         # synopsis
         if len(entry) > 2:
             if entry[2].startswith('hg'):
                 ui.write("%s\n" % entry[2])
             else:
                 ui.write('hg %s %s\n' % (aliases[0], entry[2]))
         else:
             ui.write('hg %s\n' % aliases[0])
 
         # aliases
         if not ui.quiet and len(aliases) > 1:
             ui.write(_("\naliases: %s\n") % ', '.join(aliases[1:]))
 
         # description
         doc = gettext(entry[0].__doc__)
         if not doc:
             doc = _("(no help text available)")
         if ui.quiet:
             doc = doc.splitlines()[0]
         ui.write("\n%s\n" % minirst.format(doc, textwidth))
 
         if not ui.quiet:
             # options
             if entry[1]:
                 option_lists.append((_("options:\n"), entry[1]))
 
             addglobalopts(False)
 
     def helplist(header, select=None):
         h = {}
         cmds = {}
         for c, e in table.iteritems():
             f = c.split("|", 1)[0]
             if select and not select(f):
                 continue
             if (not select and name != 'shortlist' and
                 e[0].__module__ != __name__):
                 continue
             if name == "shortlist" and not f.startswith("^"):
                 continue
             f = f.lstrip("^")
             if not ui.debugflag and f.startswith("debug"):
                 continue
             doc = e[0].__doc__
             if doc and 'DEPRECATED' in doc and not ui.verbose:
                 continue
             doc = gettext(doc)
             if not doc:
                 doc = _("(no help text available)")
             h[f] = doc.splitlines()[0].rstrip()
             cmds[f] = c.lstrip("^")
 
         if not h:
             ui.status(_('no commands defined\n'))
             return
 
         ui.status(header)
         fns = sorted(h)
         m = max(map(len, fns))
         for f in fns:
             if ui.verbose:
                 commands = cmds[f].replace("|",", ")
                 ui.write(" %s:\n      %s\n"%(commands, h[f]))
             else:
                 ui.write(' %-*s   %s\n' % (m, f, util.wrap(h[f], m + 4)))
 
         if not ui.quiet:
             addglobalopts(True)
 
     def helptopic(name):
         for names, header, doc in help.helptable:
             if name in names:
                 break
         else:
             raise error.UnknownCommand(name)
 
         # description
         if not doc:
             doc = _("(no help text available)")
         if hasattr(doc, '__call__'):
             doc = doc()
 
         ui.write("%s\n\n" % header)
         ui.write("%s\n" % minirst.format(doc, textwidth, indent=4))
 
     def helpext(name):
         try:
             mod = extensions.find(name)
             doc = gettext(mod.__doc__) or _('no help text available')
         except KeyError:
             mod = None
             doc = extensions.disabledext(name)
             if not doc:
                 raise error.UnknownCommand(name)
 
         if '\n' not in doc:
             head, tail = doc, ""
         else:
             head, tail = doc.split('\n', 1)
         ui.write(_('%s extension - %s\n\n') % (name.split('.')[-1], head))
         if tail:
             ui.write(minirst.format(tail, textwidth))
             ui.status('\n\n')
 
         if mod:
             try:
                 ct = mod.cmdtable
             except AttributeError:
                 ct = {}
             modcmds = set([c.split('|', 1)[0] for c in ct])
             helplist(_('list of commands:\n\n'), modcmds.__contains__)
         else:
             ui.write(_('use "hg help extensions" for information on enabling '
                        'extensions\n'))
 
     def helpextcmd(name):
         cmd, ext, mod = extensions.disabledcmd(name, ui.config('ui', 'strict'))
         doc = gettext(mod.__doc__).splitlines()[0]
 
         msg = help.listexts(_("'%s' is provided by the following "
                               "extension:") % cmd, {ext: doc}, len(ext),
                             indent=4)
         ui.write(minirst.format(msg, textwidth))
         ui.write('\n\n')
         ui.write(_('use "hg help extensions" for information on enabling '
                    'extensions\n'))
 
     if name and name != 'shortlist':
         i = None
         if unknowncmd:
             queries = (helpextcmd,)
         else:
             queries = (helptopic, helpcmd, helpext, helpextcmd)
         for f in queries:
             try:
                 f(name)
                 i = None
                 break
             except error.UnknownCommand, inst:
                 i = inst
         if i:
             raise i
 
     else:
         # program name
         if ui.verbose or with_version:
             version_(ui)
         else:
             ui.status(_("Mercurial Distributed SCM\n"))
         ui.status('\n')
 
         # list of commands
         if name == "shortlist":
             header = _('basic commands:\n\n')
         else:
             header = _('list of commands:\n\n')
 
         helplist(header)
         if name != 'shortlist':
             exts, maxlength = extensions.enabled()
             text = help.listexts(_('enabled extensions:'), exts, maxlength)
             if text:
                 ui.write("\n%s\n" % minirst.format(text, textwidth))
 
     # list all option lists
     opt_output = []
     for title, options in option_lists:
         opt_output.append(("\n%s" % title, None))
         for shortopt, longopt, default, desc in options:
             if _("DEPRECATED") in desc and not ui.verbose:
                 continue
             opt_output.append(("%2s%s" % (shortopt and "-%s" % shortopt,
                                           longopt and " --%s" % longopt),
                                "%s%s" % (desc,
                                          default
                                          and _(" (default: %s)") % default
                                          or "")))
 
     if not name:
         ui.write(_("\nadditional help topics:\n\n"))
         topics = []
         for names, header, doc in help.helptable:
             topics.append((sorted(names, key=len, reverse=True)[0], header))
         topics_len = max([len(s[0]) for s in topics])
         for t, desc in topics:
             ui.write(" %-*s  %s\n" % (topics_len, t, desc))
 
     if opt_output:
         opts_len = max([len(line[0]) for line in opt_output if line[1]] or [0])
         for first, second in opt_output:
             if second:
                 second = util.wrap(second, opts_len + 3)
                 ui.write(" %-*s  %s\n" % (opts_len, first, second))
             else:
                 ui.write("%s\n" % first)
 
 def identify(ui, repo, source=None,
              rev=None, num=None, id=None, branch=None, tags=None):
     """identify the working copy or specified revision
 
     With no revision, print a summary of the current state of the
     repository.
 
     Specifying a path to a repository root or Mercurial bundle will
     cause lookup to operate on that repository/bundle.
 
     This summary identifies the repository state using one or two
     parent hash identifiers, followed by a "+" if there are
     uncommitted changes in the working directory, a list of tags for
     this revision and a branch name for non-default branches.
     """
 
     if not repo and not source:
         raise util.Abort(_("There is no Mercurial repository here "
                            "(.hg not found)"))
 
     hexfunc = ui.debugflag and hex or short
     default = not (num or id or branch or tags)
     output = []
 
     revs = []
     if source:
         source, branches = hg.parseurl(ui.expandpath(source))
         repo = hg.repository(ui, source)
         revs, checkout = hg.addbranchrevs(repo, repo, branches, None)
 
     if not repo.local():
         if not rev and revs:
             rev = revs[0]
         if not rev:
             rev = "tip"
         if num or branch or tags:
             raise util.Abort(
                 "can't query remote revision number, branch, or tags")
         output = [hexfunc(repo.lookup(rev))]
     elif not rev:
         ctx = repo[None]
         parents = ctx.parents()
         changed = False
         if default or id or num:
             changed = ctx.files() + ctx.deleted()
         if default or id:
             output = ["%s%s" % ('+'.join([hexfunc(p.node()) for p in parents]),
                                 (changed) and "+" or "")]
         if num:
             output.append("%s%s" % ('+'.join([str(p.rev()) for p in parents]),
                                     (changed) and "+" or ""))
     else:
         ctx = repo[rev]
         if default or id:
             output = [hexfunc(ctx.node())]
         if num:
             output.append(str(ctx.rev()))
 
     if repo.local() and default and not ui.quiet:
         b = encoding.tolocal(ctx.branch())
         if b != 'default':
             output.append("(%s)" % b)
 
         # multiple tags for a single parent separated by '/'
         t = "/".join(ctx.tags())
         if t:
             output.append(t)
 
     if branch:
         output.append(encoding.tolocal(ctx.branch()))
 
     if tags:
         output.extend(ctx.tags())
 
     ui.write("%s\n" % ' '.join(output))
 
 def import_(ui, repo, patch1, *patches, **opts):
     """import an ordered set of patches
 
     Import a list of patches and commit them individually (unless
     --no-commit is specified).
 
     If there are outstanding changes in the working directory, import
     will abort unless given the -f/--force flag.
 
     You can import a patch straight from a mail message. Even patches
     as attachments work (to use the body part, it must have type
     text/plain or text/x-patch). From and Subject headers of email
     message are used as default committer and commit message. All
     text/plain body parts before first diff are added to commit
     message.
 
     If the imported patch was generated by hg export, user and
     description from patch override values from message headers and
     body. Values given on command line with -m/--message and -u/--user
     override these.
 
     If --exact is specified, import will set the working directory to
     the parent of each patch before applying it, and will abort if the
     resulting changeset has a different ID than the one recorded in
     the patch. This may happen due to character set problems or other
     deficiencies in the text patch format.
 
     With -s/--similarity, hg will attempt to discover renames and
     copies in the patch in the same way as 'addremove'.
 
     To read a patch from standard input, use "-" as the patch name. If
     a URL is specified, the patch will be downloaded from it.
     See 'hg help dates' for a list of formats valid for -d/--date.
     """
     patches = (patch1,) + patches
 
     date = opts.get('date')
     if date:
         opts['date'] = util.parsedate(date)
 
     try:
         sim = float(opts.get('similarity') or 0)
     except ValueError:
         raise util.Abort(_('similarity must be a number'))
     if sim < 0 or sim > 100:
         raise util.Abort(_('similarity must be between 0 and 100'))
 
     if opts.get('exact') or not opts.get('force'):
         cmdutil.bail_if_changed(repo)
 
     d = opts["base"]
     strip = opts["strip"]
     wlock = lock = None
 
     def tryone(ui, hunk):
-        tmpname, message, user, date, branch, nodeid, p1, p2 = patch.extract(ui, hunk)
+        tmpname, message, user, date, branch, nodeid, p1, p2 = \
+            patch.extract(ui, hunk)
 
         if not tmpname:
             return None
         commitid = _('to working directory')
 
         try:
             cmdline_message = cmdutil.logmessage(opts)
             if cmdline_message:
                 # pickup the cmdline msg
                 message = cmdline_message
             elif message:
                 # pickup the patch msg
                 message = message.strip()
             else:
                 # launch the editor
                 message = None
             ui.debug('message:\n%s\n' % message)
 
             wp = repo.parents()
             if opts.get('exact'):
                 if not nodeid or not p1:
                     raise util.Abort(_('not a Mercurial patch'))
                 p1 = repo.lookup(p1)
                 p2 = repo.lookup(p2 or hex(nullid))
 
                 if p1 != wp[0].node():
                     hg.clean(repo, p1)
                 repo.dirstate.setparents(p1, p2)
             elif p2:
                 try:
                     p1 = repo.lookup(p1)
                     p2 = repo.lookup(p2)
                     if p1 == wp[0].node():
                         repo.dirstate.setparents(p1, p2)
                 except error.RepoError:
                     pass
             if opts.get('exact') or opts.get('import_branch'):
                 repo.dirstate.setbranch(branch or 'default')
 
             files = {}
             try:
                 patch.patch(tmpname, ui, strip=strip, cwd=repo.root,
                             files=files, eolmode=None)
             finally:
                 files = patch.updatedir(ui, repo, files,
                                         similarity=sim / 100.0)
             if not opts.get('no_commit'):
                 if opts.get('exact'):
                     m = None
                 else:
                     m = cmdutil.matchfiles(repo, files or [])
                 n = repo.commit(message, opts.get('user') or user,
                                 opts.get('date') or date, match=m,
                                 editor=cmdutil.commiteditor)
                 if opts.get('exact'):
                     if hex(n) != nodeid:
                         repo.rollback()
                         raise util.Abort(_('patch is damaged'
                                            ' or loses information'))
                 # Force a dirstate write so that the next transaction
                 # backups an up-do-date file.
                 repo.dirstate.write()
                 if n:
                     commitid = short(n)
 
             return commitid
         finally:
             os.unlink(tmpname)
 
     try:
         wlock = repo.wlock()
         lock = repo.lock()
         lastcommit = None
         for p in patches:
             pf = os.path.join(d, p)
 
             if pf == '-':
                 ui.status(_("applying patch from stdin\n"))
                 pf = sys.stdin
             else:
                 ui.status(_("applying %s\n") % p)
                 pf = url.open(ui, pf)
 
             haspatch = False
             for hunk in patch.split(pf):
                 commitid = tryone(ui, hunk)
                 if commitid:
                     haspatch = True
                     if lastcommit:
                         ui.status(_('applied %s\n') % lastcommit)
                     lastcommit = commitid
 
             if not haspatch:
                 raise util.Abort(_('no diffs found'))
 
     finally:
         release(lock, wlock)
 
 def incoming(ui, repo, source="default", **opts):
     """show new changesets found in source
 
     Show new changesets found in the specified path/URL or the default
     pull location. These are the changesets that would have been pulled
     if a pull at the time you issued this command.
 
     For remote repository, using --bundle avoids downloading the
     changesets twice if the incoming is followed by a pull.
 
     See pull for valid source format details.
     """
     limit = cmdutil.loglimit(opts)
     source, branches = hg.parseurl(ui.expandpath(source), opts.get('branch'))
     other = hg.repository(cmdutil.remoteui(repo, opts), source)
     ui.status(_('comparing with %s\n') % url.hidepassword(source))
     revs, checkout = hg.addbranchrevs(repo, other, branches, opts.get('rev'))
     if revs:
         revs = [other.lookup(rev) for rev in revs]
     common, incoming, rheads = repo.findcommonincoming(other, heads=revs,
                                                        force=opts["force"])
     if not incoming:
         try:
             os.unlink(opts["bundle"])
         except:
             pass
         ui.status(_("no changes found\n"))
         return 1
 
     cleanup = None
     try:
         fname = opts["bundle"]
         if fname or not other.local():
             # create a bundle (uncompressed if other repo is not local)
 
             if revs is None and other.capable('changegroupsubset'):
                 revs = rheads
 
             if revs is None:
                 cg = other.changegroup(incoming, "incoming")
             else:
                 cg = other.changegroupsubset(incoming, revs, 'incoming')
             bundletype = other.local() and "HG10BZ" or "HG10UN"
             fname = cleanup = changegroup.writebundle(cg, fname, bundletype)
             # keep written bundle?
             if opts["bundle"]:
                 cleanup = None
             if not other.local():
                 # use the created uncompressed bundlerepo
                 other = bundlerepo.bundlerepository(ui, repo.root, fname)
 
         o = other.changelog.nodesbetween(incoming, revs)[0]
         if opts.get('newest_first'):
             o.reverse()
         displayer = cmdutil.show_changeset(ui, other, opts)
         count = 0
         for n in o:
             if limit is not None and count >= limit:
                 break
             parents = [p for p in other.changelog.parents(n) if p != nullid]
             if opts.get('no_merges') and len(parents) == 2:
                 continue
             count += 1
             displayer.show(other[n])
         displayer.close()
     finally:
         if hasattr(other, 'close'):
             other.close()
         if cleanup:
             os.unlink(cleanup)
 
 def init(ui, dest=".", **opts):
     """create a new repository in the given directory
 
     Initialize a new repository in the given directory. If the given
     directory does not exist, it will be created.
 
     If no directory is given, the current directory is used.
 
     It is possible to specify an ``ssh://`` URL as the destination.
     See 'hg help urls' for more information.
     """
     hg.repository(cmdutil.remoteui(ui, opts), dest, create=1)
 
 def locate(ui, repo, *pats, **opts):
     """locate files matching specific patterns
 
     Print files under Mercurial control in the working directory whose
     names match the given patterns.
 
     By default, this command searches all directories in the working
     directory. To search just the current directory and its
     subdirectories, use "--include .".
 
     If no patterns are given to match, this command prints the names
     of all files under Mercurial control in the working directory.
 
     If you want to feed the output of this command into the "xargs"
     command, use the -0 option to both this command and "xargs". This
     will avoid the problem of "xargs" treating single filenames that
     contain whitespace as multiple filenames.
     """
     end = opts.get('print0') and '\0' or '\n'
     rev = opts.get('rev') or None
 
     ret = 1
     m = cmdutil.match(repo, pats, opts, default='relglob')
     m.bad = lambda x, y: False
     for abs in repo[rev].walk(m):
         if not rev and abs not in repo.dirstate:
             continue
         if opts.get('fullpath'):
             ui.write(repo.wjoin(abs), end)
         else:
             ui.write(((pats and m.rel(abs)) or abs), end)
         ret = 0
 
     return ret
 
 def log(ui, repo, *pats, **opts):
     """show revision history of entire repository or files
 
     Print the revision history of the specified files or the entire
     project.
 
     File history is shown without following rename or copy history of
     files. Use -f/--follow with a filename to follow history across
     renames and copies. --follow without a filename will only show
     ancestors or descendants of the starting revision. --follow-first
     only follows the first parent of merge revisions.
 
     If no revision range is specified, the default is tip:0 unless
     --follow is set, in which case the working directory parent is
     used as the starting revision.
 
     See 'hg help dates' for a list of formats valid for -d/--date.
 
     By default this command prints revision number and changeset id,
     tags, non-trivial parents, user, date and time, and a summary for
     each commit. When the -v/--verbose switch is used, the list of
     changed files and full commit message are shown.
 
     NOTE: log -p/--patch may generate unexpected diff output for merge
     changesets, as it will only compare the merge changeset against
     its first parent. Also, only files different from BOTH parents
     will appear in files:.
     """
 
     matchfn = cmdutil.match(repo, pats, opts)
     limit = cmdutil.loglimit(opts)
     count = 0
 
     endrev = None
     if opts.get('copies') and opts.get('rev'):
         endrev = max(cmdutil.revrange(repo, opts.get('rev'))) + 1
 
     df = False
     if opts["date"]:
         df = util.matchdate(opts["date"])
 
     displayer = cmdutil.show_changeset(ui, repo, opts, True, matchfn)
     def prep(ctx, fns):
         rev = ctx.rev()
         parents = [p for p in repo.changelog.parentrevs(rev)
                    if p != nullrev]
         if opts.get('no_merges') and len(parents) == 2:
             return
         if opts.get('only_merges') and len(parents) != 2:
             return
         if opts.get('only_branch') and ctx.branch() not in opts['only_branch']:
             return
         if df and not df(ctx.date()[0]):
             return
         if opts['user'] and not [k for k in opts['user'] if k in ctx.user()]:
             return
         if opts.get('keyword'):
             for k in [kw.lower() for kw in opts['keyword']]:
                 if (k in ctx.user().lower() or
                     k in ctx.description().lower() or
                     k in " ".join(ctx.files()).lower()):
                     break
             else:
                 return
 
         copies = None
         if opts.get('copies') and rev:
             copies = []
             getrenamed = templatekw.getrenamedfn(repo, endrev=endrev)
             for fn in ctx.files():
                 rename = getrenamed(fn, rev)
                 if rename:
                     copies.append((fn, rename[0]))
 
         displayer.show(ctx, copies=copies)
 
     for ctx in cmdutil.walkchangerevs(repo, matchfn, opts, prep):
         if count == limit:
             break
         if displayer.flush(ctx.rev()):
             count += 1
     displayer.close()
 
 def manifest(ui, repo, node=None, rev=None):
     """output the current or given revision of the project manifest
 
     Print a list of version controlled files for the given revision.
     If no revision is given, the first parent of the working directory
     is used, or the null revision if no revision is checked out.
 
     With -v, print file permissions, symlink and executable bits.
     With --debug, print file revision hashes.
     """
 
     if rev and node:
         raise util.Abort(_("please specify just one revision"))
 
     if not node:
         node = rev
 
     decor = {'l':'644 @ ', 'x':'755 * ', '':'644   '}
     ctx = repo[node]
     for f in ctx:
         if ui.debugflag:
             ui.write("%40s " % hex(ctx.manifest()[f]))
         if ui.verbose:
             ui.write(decor[ctx.flags(f)])
         ui.write("%s\n" % f)
 
 def merge(ui, repo, node=None, **opts):
     """merge working directory with another revision
 
     The current working directory is updated with all changes made in
     the requested revision since the last common predecessor revision.
 
     Files that changed between either parent are marked as changed for
     the next commit and a commit must be performed before any further
     updates to the repository are allowed. The next commit will have
     two parents.
 
     If no revision is specified, the working directory's parent is a
     head revision, and the current branch contains exactly one other
     head, the other head is merged with by default. Otherwise, an
     explicit revision with which to merge with must be provided.
     """
 
     if opts.get('rev') and node:
         raise util.Abort(_("please specify just one revision"))
     if not node:
         node = opts.get('rev')
 
     if not node:
         branch = repo.changectx(None).branch()
         bheads = repo.branchheads(branch)
         if len(bheads) > 2:
             ui.warn(_("abort: branch '%s' has %d heads - "
                       "please merge with an explicit rev\n")
                     % (branch, len(bheads)))
             ui.status(_("(run 'hg heads .' to see heads)\n"))
             return False
 
         parent = repo.dirstate.parents()[0]
         if len(bheads) == 1:
             if len(repo.heads()) > 1:
                 ui.warn(_("abort: branch '%s' has one head - "
                           "please merge with an explicit rev\n" % branch))
                 ui.status(_("(run 'hg heads' to see all heads)\n"))
                 return False
             msg = _('there is nothing to merge')
             if parent != repo.lookup(repo[None].branch()):
                 msg = _('%s - use "hg update" instead') % msg
             raise util.Abort(msg)
 
         if parent not in bheads:
             raise util.Abort(_('working dir not at a head rev - '
                                'use "hg update" or merge with an explicit rev'))
         node = parent == bheads[0] and bheads[-1] or bheads[0]
 
     if opts.get('preview'):
         p1 = repo['.']
         p2 = repo[node]
         common = p1.ancestor(p2)
         roots, heads = [common.node()], [p2.node()]
         displayer = cmdutil.show_changeset(ui, repo, opts)
         for node in repo.changelog.nodesbetween(roots=roots, heads=heads)[0]:
             if node not in roots:
                 displayer.show(repo[node])
         displayer.close()
         return 0
 
     return hg.merge(repo, node, force=opts.get('force'))
 
 def outgoing(ui, repo, dest=None, **opts):
     """show changesets not found in the destination
 
     Show changesets not found in the specified destination repository
     or the default push location. These are the changesets that would
     be pushed if a push was requested.
 
     See pull for details of valid destination formats.
     """
     limit = cmdutil.loglimit(opts)
     dest = ui.expandpath(dest or 'default-push', dest or 'default')
     dest, branches = hg.parseurl(dest, opts.get('branch'))
     revs, checkout = hg.addbranchrevs(repo, repo, branches, opts.get('rev'))
     if revs:
         revs = [repo.lookup(rev) for rev in revs]
 
     other = hg.repository(cmdutil.remoteui(repo, opts), dest)
     ui.status(_('comparing with %s\n') % url.hidepassword(dest))
     o = repo.findoutgoing(other, force=opts.get('force'))
     if not o:
         ui.status(_("no changes found\n"))
         return 1
     o = repo.changelog.nodesbetween(o, revs)[0]
     if opts.get('newest_first'):
         o.reverse()
     displayer = cmdutil.show_changeset(ui, repo, opts)
     count = 0
     for n in o:
         if limit is not None and count >= limit:
             break
         parents = [p for p in repo.changelog.parents(n) if p != nullid]
         if opts.get('no_merges') and len(parents) == 2:
             continue
         count += 1
         displayer.show(repo[n])
     displayer.close()
 
 def parents(ui, repo, file_=None, **opts):
     """show the parents of the working directory or revision
 
     Print the working directory's parent revisions. If a revision is
     given via -r/--rev, the parent of that revision will be printed.
     If a file argument is given, the revision in which the file was
     last changed (before the working directory revision or the
     argument to --rev if given) is printed.
     """
     rev = opts.get('rev')
     if rev:
         ctx = repo[rev]
     else:
         ctx = repo[None]
 
     if file_:
         m = cmdutil.match(repo, (file_,), opts)
         if m.anypats() or len(m.files()) != 1:
             raise util.Abort(_('can only specify an explicit filename'))
         file_ = m.files()[0]
         filenodes = []
         for cp in ctx.parents():
             if not cp:
                 continue
             try:
                 filenodes.append(cp.filenode(file_))
             except error.LookupError:
                 pass
         if not filenodes:
             raise util.Abort(_("'%s' not found in manifest!") % file_)
         fl = repo.file(file_)
         p = [repo.lookup(fl.linkrev(fl.rev(fn))) for fn in filenodes]
     else:
         p = [cp.node() for cp in ctx.parents()]
 
     displayer = cmdutil.show_changeset(ui, repo, opts)
     for n in p:
         if n != nullid:
             displayer.show(repo[n])
     displayer.close()
 
 def paths(ui, repo, search=None):
     """show aliases for remote repositories
 
     Show definition of symbolic path name NAME. If no name is given,
     show definition of all available names.
 
     Path names are defined in the [paths] section of /etc/mercurial/hgrc
     and $HOME/.hgrc. If run inside a repository, .hg/hgrc is used, too.
 
     See 'hg help urls' for more information.
     """
     if search:
         for name, path in ui.configitems("paths"):
             if name == search:
                 ui.write("%s\n" % url.hidepassword(path))
                 return
         ui.warn(_("not found!\n"))
         return 1
     else:
         for name, path in ui.configitems("paths"):
             ui.write("%s = %s\n" % (name, url.hidepassword(path)))
 
 def postincoming(ui, repo, modheads, optupdate, checkout):
     if modheads == 0:
         return
     if optupdate:
         if (modheads <= 1 or len(repo.branchheads()) == 1) or checkout:
             return hg.update(repo, checkout)
         else:
             ui.status(_("not updating, since new heads added\n"))
     if modheads > 1:
         ui.status(_("(run 'hg heads' to see heads, 'hg merge' to merge)\n"))
     else:
         ui.status(_("(run 'hg update' to get a working copy)\n"))
 
 def pull(ui, repo, source="default", **opts):
     """pull changes from the specified source
 
     Pull changes from a remote repository to a local one.
 
     This finds all changes from the repository at the specified path
     or URL and adds them to a local repository (the current one unless
     -R is specified). By default, this does not update the copy of the
     project in the working directory.
 
     Use hg incoming if you want to see what would have been added by a
     pull at the time you issued this command. If you then decide to
     added those changes to the repository, you should use pull -r X
     where X is the last changeset listed by hg incoming.
 
     If SOURCE is omitted, the 'default' path will be used.
     See 'hg help urls' for more information.
     """
     source, branches = hg.parseurl(ui.expandpath(source), opts.get('branch'))
     other = hg.repository(cmdutil.remoteui(repo, opts), source)
     ui.status(_('pulling from %s\n') % url.hidepassword(source))
     revs, checkout = hg.addbranchrevs(repo, other, branches, opts.get('rev'))
     if revs:
         try:
             revs = [other.lookup(rev) for rev in revs]
         except error.CapabilityError:
             err = _("Other repository doesn't support revision lookup, "
                     "so a rev cannot be specified.")
             raise util.Abort(err)
 
     modheads = repo.pull(other, heads=revs, force=opts.get('force'))
     if checkout:
         checkout = str(repo.changelog.rev(other.lookup(checkout)))
     return postincoming(ui, repo, modheads, opts.get('update'), checkout)
 
 def push(ui, repo, dest=None, **opts):
     """push changes to the specified destination
 
     Push changes from the local repository to the specified destination.
 
     This is the symmetrical operation for pull. It moves changes from
     the current repository to a different one. If the destination is
     local this is identical to a pull in that directory from the
     current one.
 
     By default, push will refuse to run if it detects the result would
     increase the number of remote heads. This generally indicates the
     user forgot to pull and merge before pushing.
 
     If -r/--rev is used, the named revision and all its ancestors will
     be pushed to the remote repository.
 
     Please see 'hg help urls' for important details about ``ssh://``
     URLs. If DESTINATION is omitted, a default path will be used.
     """
     dest = ui.expandpath(dest or 'default-push', dest or 'default')
     dest, branches = hg.parseurl(dest, opts.get('branch'))
     revs, checkout = hg.addbranchrevs(repo, repo, branches, opts.get('rev'))
     other = hg.repository(cmdutil.remoteui(repo, opts), dest)
     ui.status(_('pushing to %s\n') % url.hidepassword(dest))
     if revs:
         revs = [repo.lookup(rev) for rev in revs]
 
     # push subrepos depth-first for coherent ordering
     c = repo['']
     subs = c.substate # only repos that are committed
     for s in sorted(subs):
         c.sub(s).push(opts.get('force'))
 
     r = repo.push(other, opts.get('force'), revs=revs)
     return r == 0
 
 def recover(ui, repo):
     """roll back an interrupted transaction
 
     Recover from an interrupted commit or pull.
 
     This command tries to fix the repository status after an
     interrupted operation. It should only be necessary when Mercurial
     suggests it.
     """
     if repo.recover():
         return hg.verify(repo)
     return 1
 
 def remove(ui, repo, *pats, **opts):
     """remove the specified files on the next commit
 
     Schedule the indicated files for removal from the repository.
 
     This only removes files from the current branch, not from the
     entire project history. -A/--after can be used to remove only
     files that have already been deleted, -f/--force can be used to
     force deletion, and -Af can be used to remove files from the next
     revision without deleting them from the working directory.
 
     The following table details the behavior of remove for different
     file states (columns) and option combinations (rows). The file
     states are Added [A], Clean [C], Modified [M] and Missing [!] (as
     reported by hg status). The actions are Warn, Remove (from branch)
     and Delete (from disk)::
 
              A  C  M  !
       none   W  RD W  R
       -f     R  RD RD R
       -A     W  W  W  R
       -Af    R  R  R  R
 
     This command schedules the files to be removed at the next commit.
     To undo a remove before that, see hg revert.
     """
 
     after, force = opts.get('after'), opts.get('force')
     if not pats and not after:
         raise util.Abort(_('no files specified'))
 
     m = cmdutil.match(repo, pats, opts)
     s = repo.status(match=m, clean=True)
     modified, added, deleted, clean = s[0], s[1], s[3], s[6]
 
     for f in m.files():
         if f not in repo.dirstate and not os.path.isdir(m.rel(f)):
             ui.warn(_('not removing %s: file is untracked\n') % m.rel(f))
 
     def warn(files, reason):
         for f in files:
             ui.warn(_('not removing %s: file %s (use -f to force removal)\n')
                     % (m.rel(f), reason))
 
     if force:
         remove, forget = modified + deleted + clean, added
     elif after:
         remove, forget = deleted, []
         warn(modified + added + clean, _('still exists'))
     else:
         remove, forget = deleted + clean, []
         warn(modified, _('is modified'))
         warn(added, _('has been marked for add'))
 
     for f in sorted(remove + forget):
         if ui.verbose or not m.exact(f):
             ui.status(_('removing %s\n') % m.rel(f))
 
     repo.forget(forget)
     repo.remove(remove, unlink=not after)
 
 def rename(ui, repo, *pats, **opts):
     """rename files; equivalent of copy + remove
 
     Mark dest as copies of sources; mark sources for deletion. If dest
     is a directory, copies are put in that directory. If dest is a
     file, there can only be one source.
 
     By default, this command copies the contents of files as they
     exist in the working directory. If invoked with -A/--after, the
     operation is recorded, but no copying is performed.
 
     This command takes effect at the next commit. To undo a rename
     before that, see hg revert.
     """
     wlock = repo.wlock(False)
     try:
         return cmdutil.copy(ui, repo, pats, opts, rename=True)
     finally:
         wlock.release()
 
 def resolve(ui, repo, *pats, **opts):
     """retry file merges from a merge or update
 
     This command can cleanly retry unresolved file merges using file
     revisions preserved from the last update or merge.
 
     If a conflict is resolved manually, please note that the changes
     will be overwritten if the merge is retried with resolve. The
     -m/--mark switch should be used to mark the file as resolved.
 
     You can specify a set of files to operate on, or use the -a/--all
     switch to select all unresolved files.
 
     This command also allows listing resolved files and manually
     indicating whether or not files are resolved. All files must be
     marked as resolved before a commit is permitted.
 
     The codes used to show the status of files are::
 
       U = unresolved
       R = resolved
     """
 
     all, mark, unmark, show, nostatus = \
         [opts.get(o) for o in 'all mark unmark list no_status'.split()]
 
     if (show and (mark or unmark)) or (mark and unmark):
         raise util.Abort(_("too many options specified"))
     if pats and all:
         raise util.Abort(_("can't specify --all and patterns"))
     if not (all or pats or show or mark or unmark):
         raise util.Abort(_('no files or directories specified; '
                            'use --all to remerge all files'))
 
     ms = merge_.mergestate(repo)
     m = cmdutil.match(repo, pats, opts)
 
     for f in ms:
         if m(f):
             if show:
                 if nostatus:
                     ui.write("%s\n" % f)
                 else:
                     ui.write("%s %s\n" % (ms[f].upper(), f))
             elif mark:
                 ms.mark(f, "r")
             elif unmark:
                 ms.mark(f, "u")
             else:
                 wctx = repo[None]
                 mctx = wctx.parents()[-1]
 
                 # backup pre-resolve (merge uses .orig for its own purposes)
                 a = repo.wjoin(f)
                 util.copyfile(a, a + ".resolve")
 
                 # resolve file
                 ms.resolve(f, wctx, mctx)
 
                 # replace filemerge's .orig file with our resolve file
                 util.rename(a + ".resolve", a + ".orig")
 
 def revert(ui, repo, *pats, **opts):
     """restore individual files or directories to an earlier state
 
     (Use update -r to check out earlier revisions, revert does not
     change the working directory parents.)
 
     With no revision specified, revert the named files or directories
     to the contents they had in the parent of the working directory.
     This restores the contents of the affected files to an unmodified
     state and unschedules adds, removes, copies, and renames. If the
     working directory has two parents, you must explicitly specify a
     revision.
 
     Using the -r/--rev option, revert the given files or directories
     to their contents as of a specific revision. This can be helpful
     to "roll back" some or all of an earlier change. See 'hg help
     dates' for a list of formats valid for -d/--date.
 
     Revert modifies the working directory. It does not commit any
     changes, or change the parent of the working directory. If you
     revert to a revision other than the parent of the working
     directory, the reverted files will thus appear modified
     afterwards.
 
     If a file has been deleted, it is restored. If the executable mode
     of a file was changed, it is reset.
 
     If names are given, all files matching the names are reverted.
     If no arguments are given, no files are reverted.
 
     Modified files are saved with a .orig suffix before reverting.
     To disable these backups, use --no-backup.
     """
 
     if opts["date"]:
         if opts["rev"]:
             raise util.Abort(_("you can't specify a revision and a date"))
         opts["rev"] = cmdutil.finddate(ui, repo, opts["date"])
 
     if not pats and not opts.get('all'):
         raise util.Abort(_('no files or directories specified; '
                            'use --all to revert the whole repo'))
 
     parent, p2 = repo.dirstate.parents()
     if not opts.get('rev') and p2 != nullid:
         raise util.Abort(_('uncommitted merge - please provide a '
                            'specific revision'))
     ctx = repo[opts.get('rev')]
     node = ctx.node()
     mf = ctx.manifest()
     if node == parent:
         pmf = mf
     else:
         pmf = None
 
     # need all matching names in dirstate and manifest of target rev,
     # so have to walk both. do not print errors if files exist in one
     # but not other.
 
     names = {}
 
     wlock = repo.wlock()
     try:
         # walk dirstate.
 
         m = cmdutil.match(repo, pats, opts)
         m.bad = lambda x, y: False
         for abs in repo.walk(m):
             names[abs] = m.rel(abs), m.exact(abs)
 
         # walk target manifest.
 
         def badfn(path, msg):
             if path in names:
                 return
             path_ = path + '/'
             for f in names:
                 if f.startswith(path_):
                     return
             ui.warn("%s: %s\n" % (m.rel(path), msg))
 
         m = cmdutil.match(repo, pats, opts)
         m.bad = badfn
         for abs in repo[node].walk(m):
             if abs not in names:
                 names[abs] = m.rel(abs), m.exact(abs)
 
         m = cmdutil.matchfiles(repo, names)
         changes = repo.status(match=m)[:4]
         modified, added, removed, deleted = map(set, changes)
 
         # if f is a rename, also revert the source
         cwd = repo.getcwd()
         for f in added:
             src = repo.dirstate.copied(f)
             if src and src not in names and repo.dirstate[src] == 'r':
                 removed.add(src)
                 names[src] = (repo.pathto(src, cwd), True)
 
         def removeforget(abs):
             if repo.dirstate[abs] == 'a':
                 return _('forgetting %s\n')
             return _('removing %s\n')
 
         revert = ([], _('reverting %s\n'))
         add = ([], _('adding %s\n'))
         remove = ([], removeforget)
         undelete = ([], _('undeleting %s\n'))
 
         disptable = (
             # dispatch table:
             #   file state
             #   action if in target manifest
             #   action if not in target manifest
             #   make backup if in target manifest
             #   make backup if not in target manifest
             (modified, revert, remove, True, True),
             (added, revert, remove, True, False),
             (removed, undelete, None, False, False),
             (deleted, revert, remove, False, False),
             )
 
         for abs, (rel, exact) in sorted(names.items()):
             mfentry = mf.get(abs)
             target = repo.wjoin(abs)
             def handle(xlist, dobackup):
                 xlist[0].append(abs)
                 if dobackup and not opts.get('no_backup') and util.lexists(target):
                     bakname = "%s.orig" % rel
                     ui.note(_('saving current version of %s as %s\n') %
                             (rel, bakname))
                     if not opts.get('dry_run'):
                         util.copyfile(target, bakname)
                 if ui.verbose or not exact:
                     msg = xlist[1]
                     if not isinstance(msg, basestring):
                         msg = msg(abs)
                     ui.status(msg % rel)
             for table, hitlist, misslist, backuphit, backupmiss in disptable:
                 if abs not in table:
                     continue
                 # file has changed in dirstate
                 if mfentry:
                     handle(hitlist, backuphit)
                 elif misslist is not None:
                     handle(misslist, backupmiss)
                 break
             else:
                 if abs not in repo.dirstate:
                     if mfentry:
                         handle(add, True)
                     elif exact:
                         ui.warn(_('file not managed: %s\n') % rel)
                     continue
                 # file has not changed in dirstate
                 if node == parent:
                     if exact:
                         ui.warn(_('no changes needed to %s\n') % rel)
                     continue
                 if pmf is None:
                     # only need parent manifest in this unlikely case,
                     # so do not read by default
                     pmf = repo[parent].manifest()
                 if abs in pmf:
                     if mfentry:
                         # if version of file is same in parent and target
                         # manifests, do nothing
                         if (pmf[abs] != mfentry or
                             pmf.flags(abs) != mf.flags(abs)):
                             handle(revert, False)
                     else:
                         handle(remove, False)
 
         if not opts.get('dry_run'):
             def checkout(f):
                 fc = ctx[f]
                 repo.wwrite(f, fc.data(), fc.flags())
 
             audit_path = util.path_auditor(repo.root)
             for f in remove[0]:
                 if repo.dirstate[f] == 'a':
                     repo.dirstate.forget(f)
                     continue
                 audit_path(f)
                 try:
                     util.unlink(repo.wjoin(f))
                 except OSError:
                     pass
                 repo.dirstate.remove(f)
 
             normal = None
             if node == parent:
                 # We're reverting to our parent. If possible, we'd like status
                 # to report the file as clean. We have to use normallookup for
                 # merges to avoid losing information about merged/dirty files.
                 if p2 != nullid:
                     normal = repo.dirstate.normallookup
                 else:
                     normal = repo.dirstate.normal
             for f in revert[0]:
                 checkout(f)
                 if normal:
                     normal(f)
 
             for f in add[0]:
                 checkout(f)
                 repo.dirstate.add(f)
 
             normal = repo.dirstate.normallookup
             if node == parent and p2 == nullid:
                 normal = repo.dirstate.normal
             for f in undelete[0]:
                 checkout(f)
                 normal(f)
 
     finally:
         wlock.release()
 
 def rollback(ui, repo):
     """roll back the last transaction
 
     This command should be used with care. There is only one level of
     rollback, and there is no way to undo a rollback. It will also
     restore the dirstate at the time of the last transaction, losing
     any dirstate changes since that time. This command does not alter
     the working directory.
 
     Transactions are used to encapsulate the effects of all commands
     that create new changesets or propagate existing changesets into a
     repository. For example, the following commands are transactional,
     and their effects can be rolled back:
 
     - commit
     - import
     - pull
     - push (with this repository as the destination)
     - unbundle
 
     This command is not intended for use on public repositories. Once
     changes are visible for pull by other users, rolling a transaction
     back locally is ineffective (someone else may already have pulled
     the changes). Furthermore, a race is possible with readers of the
     repository; for example an in-progress pull from the repository
     may fail if a rollback is performed.
     """
     repo.rollback()
 
 def root(ui, repo):
     """print the root (top) of the current working directory
 
     Print the root directory of the current repository.
     """
     ui.write(repo.root + "\n")
 
 def serve(ui, repo, **opts):
     """export the repository via HTTP
 
     Start a local HTTP repository browser and pull server.
 
     By default, the server logs accesses to stdout and errors to
     stderr. Use the -A/--accesslog and -E/--errorlog options to log to
     files.
     """
 
     if opts["stdio"]:
         if repo is None:
             raise error.RepoError(_("There is no Mercurial repository here"
                               " (.hg not found)"))
         s = sshserver.sshserver(ui, repo)
         s.serve_forever()
 
     baseui = repo and repo.baseui or ui
     optlist = ("name templates style address port prefix ipv6"
                " accesslog errorlog webdir_conf certificate encoding")
     for o in optlist.split():
         if opts.get(o, None):
             baseui.setconfig("web", o, str(opts[o]))
             if (repo is not None) and (repo.ui != baseui):
                 repo.ui.setconfig("web", o, str(opts[o]))
 
     if repo is None and not ui.config("web", "webdir_conf"):
         raise error.RepoError(_("There is no Mercurial repository here"
                                 " (.hg not found)"))
 
     class service(object):
         def init(self):
             util.set_signal_handler()
             self.httpd = server.create_server(baseui, repo)
 
             if not ui.verbose:
                 return
 
             if self.httpd.prefix:
                 prefix = self.httpd.prefix.strip('/') + '/'
             else:
                 prefix = ''
 
             port = ':%d' % self.httpd.port
             if port == ':80':
                 port = ''
 
             bindaddr = self.httpd.addr
             if bindaddr == '0.0.0.0':
                 bindaddr = '*'
             elif ':' in bindaddr: # IPv6
                 bindaddr = '[%s]' % bindaddr
 
             fqaddr = self.httpd.fqaddr
             if ':' in fqaddr:
                 fqaddr = '[%s]' % fqaddr
             ui.status(_('listening at http://%s%s/%s (bound to %s:%d)\n') %
                       (fqaddr, port, prefix, bindaddr, self.httpd.port))
 
         def run(self):
             self.httpd.serve_forever()
 
     service = service()
 
     cmdutil.service(opts, initfn=service.init, runfn=service.run)
 
 def status(ui, repo, *pats, **opts):
     """show changed files in the working directory
 
     Show status of files in the repository. If names are given, only
     files that match are shown. Files that are clean or ignored or
     the source of a copy/move operation, are not listed unless
     -c/--clean, -i/--ignored, -C/--copies or -A/--all are given.
     Unless options described with "show only ..." are given, the
     options -mardu are used.
 
     Option -q/--quiet hides untracked (unknown and ignored) files
     unless explicitly requested with -u/--unknown or -i/--ignored.
 
     NOTE: status may appear to disagree with diff if permissions have
     changed or a merge has occurred. The standard diff format does not
     report permission changes and diff only reports changes relative
     to one merge parent.
 
     If one revision is given, it is used as the base revision.
     If two revisions are given, the differences between them are
     shown. The --change option can also be used as a shortcut to list
     the changed files of a revision from its first parent.
 
     The codes used to show the status of files are::
 
       M = modified
       A = added
       R = removed
       C = clean
       ! = missing (deleted by non-hg command, but still tracked)
       ? = not tracked
       I = ignored
         = origin of the previous file listed as A (added)
     """
 
     revs = opts.get('rev')
     change = opts.get('change')
 
     if revs and change:
         msg = _('cannot specify --rev and --change at the same time')
         raise util.Abort(msg)
     elif change:
         node2 = repo.lookup(change)
         node1 = repo[node2].parents()[0].node()
     else:
         node1, node2 = cmdutil.revpair(repo, revs)
 
     cwd = (pats and repo.getcwd()) or ''
     end = opts.get('print0') and '\0' or '\n'
     copy = {}
     states = 'modified added removed deleted unknown ignored clean'.split()
     show = [k for k in states if opts.get(k)]
     if opts.get('all'):
         show += ui.quiet and (states[:4] + ['clean']) or states
     if not show:
         show = ui.quiet and states[:4] or states[:5]
 
     stat = repo.status(node1, node2, cmdutil.match(repo, pats, opts),
                        'ignored' in show, 'clean' in show, 'unknown' in show)
     changestates = zip(states, 'MAR!?IC', stat)
 
     if (opts.get('all') or opts.get('copies')) and not opts.get('no_status'):
         ctxn = repo[nullid]
         ctx1 = repo[node1]
         ctx2 = repo[node2]
         added = stat[1]
         if node2 is None:
             added = stat[0] + stat[1] # merged?
 
         for k, v in copies.copies(repo, ctx1, ctx2, ctxn)[0].iteritems():
             if k in added:
                 copy[k] = v
             elif v in added:
                 copy[v] = k
 
     for state, char, files in changestates:
         if state in show:
             format = "%s %%s%s" % (char, end)
             if opts.get('no_status'):
                 format = "%%s%s" % end
 
             for f in files:
                 ui.write(format % repo.pathto(f, cwd))
                 if f in copy:
                     ui.write('  %s%s' % (repo.pathto(copy[f], cwd), end))
 
 def summary(ui, repo, **opts):
     """summarize working directory state
 
     This generates a brief summary of the working directory state,
     including parents, branch, commit status, and available updates.
 
     With the --remote option, this will check the default paths for
     incoming and outgoing changes. This can be time-consuming.
     """
 
     ctx = repo[None]
     parents = ctx.parents()
     pnode = parents[0].node()
     tags = repo.tags()
 
     for p in parents:
         t = ' '.join([t for t in tags if tags[t] == p.node()])
         if p.rev() == -1:
             if not len(repo):
                 t += _(' (empty repository)')
             else:
                 t += _(' (no revision checked out)')
         ui.write(_('parent: %d:%s %s\n') % (p.rev(), str(p), t))
         if p.description():
             ui.status(' ' + p.description().splitlines()[0].strip() + '\n')
 
     branch = ctx.branch()
     bheads = repo.branchheads(branch)
     m = _('branch: %s\n') % branch
     if branch != 'default':
         ui.write(m)
     else:
         ui.status(m)
 
     st = list(repo.status(unknown=True))[:6]
     ms = merge_.mergestate(repo)
     st.append([f for f in ms if ms[f] == 'u'])
     labels = [_('%d modified'), _('%d added'), _('%d removed'),
               _('%d deleted'), _('%d unknown'), _('%d ignored'),
               _('%d unresolved')]
     t = []
     for s, l in zip(st, labels):
         if s:
             t.append(l % len(s))
 
     t = ', '.join(t)
     cleanworkdir = False
 
     if len(parents) > 1:
         t += _(' (merge)')
     elif branch != parents[0].branch():
         t += _(' (new branch)')
     elif (not st[0] and not st[1] and not st[2]):
         t += _(' (clean)')
         cleanworkdir = True
     elif pnode not in bheads:
         t += _(' (new branch head)')
 
     if cleanworkdir:
         ui.status(_('commit: %s\n') % t.strip())
     else:
         ui.write(_('commit: %s\n') % t.strip())
 
     # all ancestors of branch heads - all ancestors of parent = new csets
     new = [0] * len(repo)
     cl = repo.changelog
     for a in [cl.rev(n) for n in bheads]:
         new[a] = 1
     for a in cl.ancestors(*[cl.rev(n) for n in bheads]):
         new[a] = 1
     for a in [p.rev() for p in parents]:
         if a >= 0:
             new[a] = 0
     for a in cl.ancestors(*[p.rev() for p in parents]):
         new[a] = 0
     new = sum(new)
 
     if new == 0:
         ui.status(_('update: (current)\n'))
     elif pnode not in bheads:
         ui.write(_('update: %d new changesets (update)\n') % new)
     else:
         ui.write(_('update: %d new changesets, %d branch heads (merge)\n') %
                  (new, len(bheads)))
 
     if opts.get('remote'):
         t = []
         source, branches = hg.parseurl(ui.expandpath('default'))
         other = hg.repository(cmdutil.remoteui(repo, {}), source)
         revs, checkout = hg.addbranchrevs(repo, other, branches, opts.get('rev'))
         ui.debug('comparing with %s\n' % url.hidepassword(source))
         repo.ui.pushbuffer()
         common, incoming, rheads = repo.findcommonincoming(other)
         repo.ui.popbuffer()
         if incoming:
             t.append(_('1 or more incoming'))
 
         dest, branches = hg.parseurl(ui.expandpath('default-push', 'default'))
         revs, checkout = hg.addbranchrevs(repo, repo, branches, None)
         other = hg.repository(cmdutil.remoteui(repo, {}), dest)
         ui.debug('comparing with %s\n' % url.hidepassword(dest))
         repo.ui.pushbuffer()
         o = repo.findoutgoing(other)
         repo.ui.popbuffer()
         o = repo.changelog.nodesbetween(o, None)[0]
         if o:
             t.append(_('%d outgoing') % len(o))
 
         if t:
             ui.write(_('remote: %s\n') % (', '.join(t)))
         else:
             ui.status(_('remote: (synced)\n'))
 
 def tag(ui, repo, name1, *names, **opts):
     """add one or more tags for the current or given revision
 
     Name a particular revision using <name>.
 
     Tags are used to name particular revisions of the repository and are
     very useful to compare different revisions, to go back to significant
     earlier versions or to mark branch points as releases, etc.
 
     If no revision is given, the parent of the working directory is
     used, or tip if no revision is checked out.
 
     To facilitate version control, distribution, and merging of tags,
     they are stored as a file named ".hgtags" which is managed
     similarly to other project files and can be hand-edited if
     necessary. The file '.hg/localtags' is used for local tags (not
     shared among repositories).
 
     See 'hg help dates' for a list of formats valid for -d/--date.
     """
 
     rev_ = "."
     names = (name1,) + names
     if len(names) != len(set(names)):
         raise util.Abort(_('tag names must be unique'))
     for n in names:
         if n in ['tip', '.', 'null']:
             raise util.Abort(_('the name \'%s\' is reserved') % n)
     if opts.get('rev') and opts.get('remove'):
         raise util.Abort(_("--rev and --remove are incompatible"))
     if opts.get('rev'):
         rev_ = opts['rev']
     message = opts.get('message')
     if opts.get('remove'):
         expectedtype = opts.get('local') and 'local' or 'global'
         for n in names:
             if not repo.tagtype(n):
                 raise util.Abort(_('tag \'%s\' does not exist') % n)
             if repo.tagtype(n) != expectedtype:
                 if expectedtype == 'global':
                     raise util.Abort(_('tag \'%s\' is not a global tag') % n)
                 else:
                     raise util.Abort(_('tag \'%s\' is not a local tag') % n)
         rev_ = nullid
         if not message:
             # we don't translate commit messages
             message = 'Removed tag %s' % ', '.join(names)
     elif not opts.get('force'):
         for n in names:
             if n in repo.tags():
                 raise util.Abort(_('tag \'%s\' already exists '
                                    '(use -f to force)') % n)
     if not rev_ and repo.dirstate.parents()[1] != nullid:
         raise util.Abort(_('uncommitted merge - please provide a '
                            'specific revision'))
     r = repo[rev_].node()
 
     if not message:
         # we don't translate commit messages
         message = ('Added tag %s for changeset %s' %
                    (', '.join(names), short(r)))
 
     date = opts.get('date')
     if date:
         date = util.parsedate(date)
 
     repo.tag(names, r, message, opts.get('local'), opts.get('user'), date)
 
 def tags(ui, repo):
     """list repository tags
 
     This lists both regular and local tags. When the -v/--verbose
     switch is used, a third column "local" is printed for local tags.
     """
 
     hexfunc = ui.debugflag and hex or short
     tagtype = ""
 
     for t, n in reversed(repo.tagslist()):
         if ui.quiet:
             ui.write("%s\n" % t)
             continue
 
         try:
             hn = hexfunc(n)
             r = "%5d:%s" % (repo.changelog.rev(n), hn)
         except error.LookupError:
             r = "    ?:%s" % hn
         else:
             spaces = " " * (30 - encoding.colwidth(t))
             if ui.verbose:
                 if repo.tagtype(t) == 'local':
                     tagtype = " local"
                 else:
                     tagtype = ""
             ui.write("%s%s %s%s\n" % (t, spaces, r, tagtype))
 
 def tip(ui, repo, **opts):
     """show the tip revision
 
     The tip revision (usually just called the tip) is the changeset
     most recently added to the repository (and therefore the most
     recently changed head).
 
     If you have just made a commit, that commit will be the tip. If
     you have just pulled changes from another repository, the tip of
     that repository becomes the current tip. The "tip" tag is special
     and cannot be renamed or assigned to a different changeset.
     """
     displayer = cmdutil.show_changeset(ui, repo, opts)
     displayer.show(repo[len(repo) - 1])
     displayer.close()
 
 def unbundle(ui, repo, fname1, *fnames, **opts):
     """apply one or more changegroup files
 
     Apply one or more compressed changegroup files generated by the
     bundle command.
     """
     fnames = (fname1,) + fnames
 
     lock = repo.lock()
     try:
         for fname in fnames:
             f = url.open(ui, fname)
             gen = changegroup.readbundle(f, fname)
             modheads = repo.addchangegroup(gen, 'unbundle', 'bundle:' + fname)
     finally:
         lock.release()
 
     return postincoming(ui, repo, modheads, opts.get('update'), None)
 
 def update(ui, repo, node=None, rev=None, clean=False, date=None, check=False):
     """update working directory
 
     Update the repository's working directory to the specified
     changeset.
 
     If no changeset is specified, attempt to update to the head of the
     current branch. If this head is a descendant of the working
     directory's parent, update to it, otherwise abort.
 
     The following rules apply when the working directory contains
     uncommitted changes:
 
     1. If neither -c/--check nor -C/--clean is specified, and if
        the requested changeset is an ancestor or descendant of
        the working directory's parent, the uncommitted changes
        are merged into the requested changeset and the merged
        result is left uncommitted. If the requested changeset is
        not an ancestor or descendant (that is, it is on another
        branch), the update is aborted and the uncommitted changes
        are preserved.
 
     2. With the -c/--check option, the update is aborted and the
        uncommitted changes are preserved.
 
     3. With the -C/--clean option, uncommitted changes are discarded and
        the working directory is updated to the requested changeset.
 
     Use null as the changeset to remove the working directory (like 'hg
     clone -U').
 
     If you want to update just one file to an older changeset, use 'hg revert'.
 
     See 'hg help dates' for a list of formats valid for -d/--date.
     """
     if rev and node:
         raise util.Abort(_("please specify just one revision"))
 
     if not rev:
         rev = node
 
     if check and clean:
         raise util.Abort(_("cannot specify both -c/--check and -C/--clean"))
 
     if check:
         # we could use dirty() but we can ignore merge and branch trivia
         c = repo[None]
         if c.modified() or c.added() or c.removed():
             raise util.Abort(_("uncommitted local changes"))
 
     if date:
         if rev:
             raise util.Abort(_("you can't specify a revision and a date"))
         rev = cmdutil.finddate(ui, repo, date)
 
     if clean or check:
         return hg.clean(repo, rev)
     else:
         return hg.update(repo, rev)
 
 def verify(ui, repo):
     """verify the integrity of the repository
 
     Verify the integrity of the current repository.
 
     This will perform an extensive check of the repository's
     integrity, validating the hashes and checksums of each entry in
     the changelog, manifest, and tracked files, as well as the
     integrity of their crosslinks and indices.
     """
     return hg.verify(repo)
 
 def version_(ui):
     """output version and copyright information"""
     ui.write(_("Mercurial Distributed SCM (version %s)\n")
              % util.version())
     ui.status(_(
         "\nCopyright (C) 2005-2010 Matt Mackall <[e-mail]> and others\n"
         "This is free software; see the source for copying conditions. "
         "There is NO\nwarranty; "
         "not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n"
     ))
 
 # Command options and aliases are listed here, alphabetically
 
 globalopts = [
     ('R', 'repository', '',
      _('repository root directory or name of overlay bundle file')),
     ('', 'cwd', '', _('change working directory')),
     ('y', 'noninteractive', None,
      _('do not prompt, assume \'yes\' for any required answers')),
     ('q', 'quiet', None, _('suppress output')),
     ('v', 'verbose', None, _('enable additional output')),
     ('', 'config', [], _('set/override config option')),
     ('', 'debug', None, _('enable debugging output')),
     ('', 'debugger', None, _('start debugger')),
     ('', 'encoding', encoding.encoding, _('set the charset encoding')),
     ('', 'encodingmode', encoding.encodingmode,
      _('set the charset encoding mode')),
     ('', 'traceback', None, _('always print a traceback on exception')),
     ('', 'time', None, _('time how long the command takes')),
     ('', 'profile', None, _('print command execution profile')),
     ('', 'version', None, _('output version information and exit')),
     ('h', 'help', None, _('display help and exit')),
 ]
 
 dryrunopts = [('n', 'dry-run', None,
                _('do not perform actions, just print output'))]
 
 remoteopts = [
     ('e', 'ssh', '', _('specify ssh command to use')),
     ('', 'remotecmd', '', _('specify hg command to run on the remote side')),
 ]
 
 walkopts = [
     ('I', 'include', [], _('include names matching the given patterns')),
     ('X', 'exclude', [], _('exclude names matching the given patterns')),
 ]
 
 commitopts = [
     ('m', 'message', '', _('use <text> as commit message')),
     ('l', 'logfile', '', _('read commit message from <file>')),
 ]
 
 commitopts2 = [
     ('d', 'date', '', _('record datecode as commit date')),
     ('u', 'user', '', _('record the specified user as committer')),
 ]
 
 templateopts = [
     ('', 'style', '', _('display using template map file')),
     ('', 'template', '', _('display with template')),
 ]
 
 logopts = [
     ('p', 'patch', None, _('show patch')),
     ('g', 'git', None, _('use git extended diff format')),
     ('l', 'limit', '', _('limit number of changes displayed')),
     ('M', 'no-merges', None, _('do not show merges')),
 ] + templateopts
 
 diffopts = [
     ('a', 'text', None, _('treat all files as text')),
     ('g', 'git', None, _('use git extended diff format')),
     ('', 'nodates', None, _('omit dates from diff headers'))
 ]
 
 diffopts2 = [
     ('p', 'show-function', None, _('show which function each change is in')),
     ('', 'reverse', None, _('produce a diff that undoes the changes')),
     ('w', 'ignore-all-space', None,
      _('ignore white space when comparing lines')),
     ('b', 'ignore-space-change', None,
      _('ignore changes in the amount of white space')),
     ('B', 'ignore-blank-lines', None,
      _('ignore changes whose lines are all blank')),
     ('U', 'unified', '', _('number of lines of context to show')),
     ('', 'stat', None, _('output diffstat-style summary of changes')),
 ]
 
 similarityopts = [
     ('s', 'similarity', '',
            _('guess renamed files by similarity (0<=s<=100)'))
 ]
 
 table = {
     "^add": (add, walkopts + dryrunopts, _('[OPTION]... [FILE]...')),
     "addremove":
         (addremove, similarityopts + walkopts + dryrunopts,
          _('[OPTION]... [FILE]...')),
     "^annotate|blame":
         (annotate,
          [('r', 'rev', '', _('annotate the specified revision')),
           ('', 'follow', None, _('follow copies and renames (DEPRECATED)')),
           ('', 'no-follow', None, _("don't follow copies and renames")),
           ('a', 'text', None, _('treat all files as text')),
           ('u', 'user', None, _('list the author (long with -v)')),
           ('f', 'file', None, _('list the filename')),
           ('d', 'date', None, _('list the date (short with -q)')),
           ('n', 'number', None, _('list the revision number (default)')),
           ('c', 'changeset', None, _('list the changeset')),
           ('l', 'line-number', None,
            _('show line number at the first appearance'))
          ] + walkopts,
          _('[-r REV] [-f] [-a] [-u] [-d] [-n] [-c] [-l] FILE...')),
     "archive":
         (archive,
          [('', 'no-decode', None, _('do not pass files through decoders')),
           ('p', 'prefix', '', _('directory prefix for files in archive')),
           ('r', 'rev', '', _('revision to distribute')),
           ('t', 'type', '', _('type of distribution to create')),
          ] + walkopts,
          _('[OPTION]... DEST')),
     "backout":
         (backout,
          [('', 'merge', None,
            _('merge with old dirstate parent after backout')),
           ('', 'parent', '', _('parent to choose when backing out merge')),
           ('r', 'rev', '', _('revision to backout')),
          ] + walkopts + commitopts + commitopts2,
          _('[OPTION]... [-r] REV')),
     "bisect":
         (bisect,
          [('r', 'reset', False, _('reset bisect state')),
           ('g', 'good', False, _('mark changeset good')),
           ('b', 'bad', False, _('mark changeset bad')),
           ('s', 'skip', False, _('skip testing changeset')),
           ('c', 'command', '', _('use command to check changeset state')),
           ('U', 'noupdate', False, _('do not update to target'))],
          _("[-gbsr] [-U] [-c CMD] [REV]")),
     "branch":
         (branch,
          [('f', 'force', None,
            _('set branch name even if it shadows an existing branch')),
           ('C', 'clean', None, _('reset branch name to parent branch name'))],
          _('[-fC] [NAME]')),
     "branches":
         (branches,
          [('a', 'active', False,
            _('show only branches that have unmerged heads')),
           ('c', 'closed', False,
            _('show normal and closed branches'))],
          _('[-ac]')),
     "bundle":
         (bundle,
          [('f', 'force', None,
            _('run even when the destination is unrelated')),
           ('r', 'rev', [],
            _('a changeset intended to be added to the destination')),
           ('b', 'branch', [],
            _('a specific branch you would like to bundle')),
           ('', 'base', [],
            _('a base changeset assumed to be available at the destination')),
           ('a', 'all', None, _('bundle all changesets in the repository')),
           ('t', 'type', 'bzip2', _('bundle compression type to use')),
          ] + remoteopts,
          _('[-f] [-t TYPE] [-a] [-r REV]... [--base REV]... FILE [DEST]')),
     "cat":
         (cat,
          [('o', 'output', '', _('print output to file with formatted name')),
           ('r', 'rev', '', _('print the given revision')),
           ('', 'decode', None, _('apply any matching decode filter')),
          ] + walkopts,
          _('[OPTION]... FILE...')),
     "^clone":
         (clone,
          [('U', 'noupdate', None,
           _('the clone will include an empty working copy (only a repository)')),
           ('u', 'updaterev', '',
            _('revision, tag or branch to check out')),
           ('r', 'rev', [],
            _('include the specified changeset')),
           ('b', 'branch', [],
            _('clone only the specified branch')),
           ('', 'pull', None, _('use pull protocol to copy metadata')),
           ('', 'uncompressed', None,
            _('use uncompressed transfer (fast over LAN)')),
          ] + remoteopts,
          _('[OPTION]... SOURCE [DEST]')),
     "^commit|ci":
         (commit,
          [('A', 'addremove', None,
            _('mark new/missing files as added/removed before committing')),
           ('', 'close-branch', None,
            _('mark a branch as closed, hiding it from the branch list')),
          ] + walkopts + commitopts + commitopts2,
          _('[OPTION]... [FILE]...')),
     "copy|cp":
         (copy,
          [('A', 'after', None, _('record a copy that has already occurred')),
           ('f', 'force', None,
            _('forcibly copy over an existing managed file')),
          ] + walkopts + dryrunopts,
          _('[OPTION]... [SOURCE]... DEST')),
     "debugancestor": (debugancestor, [], _('[INDEX] REV1 REV2')),
     "debugcheckstate": (debugcheckstate, [], ''),
     "debugcommands": (debugcommands, [], _('[COMMAND]')),
     "debugcomplete":
         (debugcomplete,
          [('o', 'options', None, _('show the command options'))],
          _('[-o] CMD')),
     "debugdate":
         (debugdate,
          [('e', 'extended', None, _('try extended date formats'))],
          _('[-e] DATE [RANGE]')),
     "debugdata": (debugdata, [], _('FILE REV')),
     "debugfsinfo": (debugfsinfo, [], _('[PATH]')),
     "debugindex": (debugindex, [], _('FILE')),
     "debugindexdot": (debugindexdot, [], _('FILE')),
     "debuginstall": (debuginstall, [], ''),
     "debugrebuildstate":
         (debugrebuildstate,
          [('r', 'rev', '', _('revision to rebuild to'))],
          _('[-r REV] [REV]')),
     "debugrename":
         (debugrename,
          [('r', 'rev', '', _('revision to debug'))],
          _('[-r REV] FILE')),
     "debugsetparents":
         (debugsetparents, [], _('REV1 [REV2]')),
     "debugstate":
         (debugstate,
          [('', 'nodates', None, _('do not display the saved mtime'))],
          _('[OPTION]...')),
     "debugsub":
         (debugsub,
          [('r', 'rev', '', _('revision to check'))],
          _('[-r REV] [REV]')),
     "debugwalk": (debugwalk, walkopts, _('[OPTION]... [FILE]...')),
     "^diff":
         (diff,
          [('r', 'rev', [], _('revision')),
           ('c', 'change', '', _('change made by revision'))
          ] + diffopts + diffopts2 + walkopts,
          _('[OPTION]... [-r REV1 [-r REV2]] [FILE]...')),
     "^export":
         (export,
          [('o', 'output', '', _('print output to file with formatted name')),
           ('', 'switch-parent', None, _('diff against the second parent')),
           ('r', 'rev', [], _('revisions to export')),
           ] + diffopts,
          _('[OPTION]... [-o OUTFILESPEC] REV...')),
     "^forget":
         (forget,
          [] + walkopts,
          _('[OPTION]... FILE...')),
     "grep":
         (grep,
          [('0', 'print0', None, _('end fields with NUL')),
           ('', 'all', None, _('print all revisions that match')),
           ('f', 'follow', None,
            _('follow changeset history,'
              ' or file history across copies and renames')),
           ('i', 'ignore-case', None, _('ignore case when matching')),
           ('l', 'files-with-matches', None,
            _('print only filenames and revisions that match')),
           ('n', 'line-number', None, _('print matching line numbers')),
           ('r', 'rev', [], _('search in given revision range')),
           ('u', 'user', None, _('list the author (long with -v)')),
           ('d', 'date', None, _('list the date (short with -q)')),
          ] + walkopts,
          _('[OPTION]... PATTERN [FILE]...')),
     "heads":
         (heads,
          [('r', 'rev', '', _('show only heads which are descendants of REV')),
           ('t', 'topo', False, _('show topological heads only')),
           ('a', 'active', False,
            _('show active branchheads only [DEPRECATED]')),
           ('c', 'closed', False,
            _('show normal and closed branch heads')),
          ] + templateopts,
          _('[-ac] [-r STARTREV] [REV]...')),
     "help": (help_, [], _('[TOPIC]')),
     "identify|id":
         (identify,
          [('r', 'rev', '', _('identify the specified revision')),
           ('n', 'num', None, _('show local revision number')),
           ('i', 'id', None, _('show global revision id')),
           ('b', 'branch', None, _('show branch')),
           ('t', 'tags', None, _('show tags'))],
          _('[-nibt] [-r REV] [SOURCE]')),
     "import|patch":
         (import_,
          [('p', 'strip', 1,
            _('directory strip option for patch. This has the same '
              'meaning as the corresponding patch option')),
           ('b', 'base', '', _('base path')),
           ('f', 'force', None,
            _('skip check for outstanding uncommitted changes')),
           ('', 'no-commit', None,
            _("don't commit, just update the working directory")),
           ('', 'exact', None,
            _('apply patch to the nodes from which it was generated')),
           ('', 'import-branch', None,
            _('use any branch information in patch (implied by --exact)'))] +
          commitopts + commitopts2 + similarityopts,
          _('[OPTION]... PATCH...')),
     "incoming|in":
         (incoming,
          [('f', 'force', None,
            _('run even if remote repository is unrelated')),
           ('n', 'newest-first', None, _('show newest record first')),
           ('', 'bundle', '', _('file to store the bundles into')),
           ('r', 'rev', [],
            _('a remote changeset intended to be added')),
           ('b', 'branch', [],
            _('a specific branch you would like to pull')),
          ] + logopts + remoteopts,
          _('[-p] [-n] [-M] [-f] [-r REV]...'
            ' [--bundle FILENAME] [SOURCE]')),
     "^init":
         (init,
          remoteopts,
          _('[-e CMD] [--remotecmd CMD] [DEST]')),
     "locate":
         (locate,
          [('r', 'rev', '', _('search the repository as it is in REV')),
           ('0', 'print0', None,
            _('end filenames with NUL, for use with xargs')),
           ('f', 'fullpath', None,
            _('print complete paths from the filesystem root')),
          ] + walkopts,
          _('[OPTION]... [PATTERN]...')),
     "^log|history":
         (log,
          [('f', 'follow', None,
            _('follow changeset history,'
              ' or file history across copies and renames')),
           ('', 'follow-first', None,
            _('only follow the first parent of merge changesets')),
           ('d', 'date', '', _('show revisions matching date spec')),
           ('C', 'copies', None, _('show copied files')),
           ('k', 'keyword', [], _('do case-insensitive search for a keyword')),
           ('r', 'rev', [], _('show the specified revision or range')),
           ('', 'removed', None, _('include revisions where files were removed')),
           ('m', 'only-merges', None, _('show only merges')),
           ('u', 'user', [], _('revisions committed by user')),
           ('b', 'only-branch', [],
             _('show only changesets within the given named branch')),
           ('P', 'prune', [],
            _('do not display revision or any of its ancestors')),
          ] + logopts + walkopts,
          _('[OPTION]... [FILE]')),
     "manifest":
         (manifest,
          [('r', 'rev', '', _('revision to display'))],
          _('[-r REV]')),
     "^merge":
         (merge,
          [('f', 'force', None, _('force a merge with outstanding changes')),
           ('r', 'rev', '', _('revision to merge')),
           ('P', 'preview', None,
            _('review revisions to merge (no merge is performed)'))],
          _('[-P] [-f] [[-r] REV]')),
     "outgoing|out":
         (outgoing,
          [('f', 'force', None,
            _('run even when the destination is unrelated')),
           ('r', 'rev', [],
            _('a changeset intended to be included in the destination')),
           ('n', 'newest-first', None, _('show newest record first')),
           ('b', 'branch', [],
            _('a specific branch you would like to push')),
          ] + logopts + remoteopts,
          _('[-M] [-p] [-n] [-f] [-r REV]... [DEST]')),
     "parents":
         (parents,
          [('r', 'rev', '', _('show parents of the specified revision')),
          ] + templateopts,
          _('[-r REV] [FILE]')),
     "paths": (paths, [], _('[NAME]')),
     "^pull":
         (pull,
          [('u', 'update', None,
            _('update to new branch head if changesets were pulled')),
           ('f', 'force', None,
            _('run even when remote repository is unrelated')),
           ('r', 'rev', [],
            _('a remote changeset intended to be added')),
           ('b', 'branch', [],
            _('a specific branch you would like to pull')),
          ] + remoteopts,
          _('[-u] [-f] [-r REV]... [-e CMD] [--remotecmd CMD] [SOURCE]')),
     "^push":
         (push,
          [('f', 'force', None, _('force push')),
           ('r', 'rev', [],
            _('a changeset intended to be included in the destination')),
           ('b', 'branch', [],
            _('a specific branch you would like to push')),
          ] + remoteopts,
          _('[-f] [-r REV]... [-e CMD] [--remotecmd CMD] [DEST]')),
     "recover": (recover, []),
     "^remove|rm":
         (remove,
          [('A', 'after', None, _('record delete for missing files')),
           ('f', 'force', None,
            _('remove (and delete) file even if added or modified')),
          ] + walkopts,
          _('[OPTION]... FILE...')),
     "rename|mv":
         (rename,
          [('A', 'after', None, _('record a rename that has already occurred')),
           ('f', 'force', None,
            _('forcibly copy over an existing managed file')),
          ] + walkopts + dryrunopts,
          _('[OPTION]... SOURCE... DEST')),
     "resolve":
         (resolve,
          [('a', 'all', None, _('select all unresolved files')),
           ('l', 'list', None, _('list state of files needing merge')),
           ('m', 'mark', None, _('mark files as resolved')),
           ('u', 'unmark', None, _('unmark files as resolved')),
           ('n', 'no-status', None, _('hide status prefix'))]
           + walkopts,
           _('[OPTION]... [FILE]...')),
     "revert":
         (revert,
          [('a', 'all', None, _('revert all changes when no arguments given')),
           ('d', 'date', '', _('tipmost revision matching date')),
           ('r', 'rev', '', _('revert to the specified revision')),
           ('', 'no-backup', None, _('do not save backup copies of files')),
          ] + walkopts + dryrunopts,
          _('[OPTION]... [-r REV] [NAME]...')),
     "rollback": (rollback, []),
     "root": (root, []),
     "^serve":
         (serve,
          [('A', 'accesslog', '', _('name of access log file to write to')),
           ('d', 'daemon', None, _('run server in background')),
           ('', 'daemon-pipefds', '', _('used internally by daemon mode')),
           ('E', 'errorlog', '', _('name of error log file to write to')),
           ('p', 'port', 0, _('port to listen on (default: 8000)')),
           ('a', 'address', '',
            _('address to listen on (default: all interfaces)')),
           ('', 'prefix', '',
            _('prefix path to serve from (default: server root)')),
           ('n', 'name', '',
            _('name to show in web pages (default: working directory)')),
           ('', 'webdir-conf', '', _('name of the webdir config file'
                                     ' (serve more than one repository)')),
           ('', 'pid-file', '', _('name of file to write process ID to')),
           ('', 'stdio', None, _('for remote clients')),
           ('t', 'templates', '', _('web templates to use')),
           ('', 'style', '', _('template style to use')),
           ('6', 'ipv6', None, _('use IPv6 in addition to IPv4')),
           ('', 'certificate', '', _('SSL certificate file'))],
          _('[OPTION]...')),
     "showconfig|debugconfig":
         (showconfig,
          [('u', 'untrusted', None, _('show untrusted configuration options'))],
          _('[-u] [NAME]...')),
     "^summary|sum":
         (summary,
          [('', 'remote', None, _('check for push and pull'))], '[--remote]'),
     "^status|st":
         (status,
          [('A', 'all', None, _('show status of all files')),
           ('m', 'modified', None, _('show only modified files')),
           ('a', 'added', None, _('show only added files')),
           ('r', 'removed', None, _('show only removed files')),
           ('d', 'deleted', None, _('show only deleted (but tracked) files')),
           ('c', 'clean', None, _('show only files without changes')),
           ('u', 'unknown', None, _('show only unknown (not tracked) files')),
           ('i', 'ignored', None, _('show only ignored files')),
           ('n', 'no-status', None, _('hide status prefix')),
           ('C', 'copies', None, _('show source of copied files')),
           ('0', 'print0', None,
            _('end filenames with NUL, for use with xargs')),
           ('', 'rev', [], _('show difference from revision')),
           ('', 'change', '', _('list the changed files of a revision')),
          ] + walkopts,
          _('[OPTION]... [FILE]...')),
     "tag":
         (tag,
          [('f', 'force', None, _('replace existing tag')),
           ('l', 'local', None, _('make the tag local')),
           ('r', 'rev', '', _('revision to tag')),
           ('', 'remove', None, _('remove a tag')),
           # -l/--local is already there, commitopts cannot be used
           ('m', 'message', '', _('use <text> as commit message')),
          ] + commitopts2,
          _('[-f] [-l] [-m TEXT] [-d DATE] [-u USER] [-r REV] NAME...')),
     "tags": (tags, [], ''),
     "tip":
         (tip,
          [('p', 'patch', None, _('show patch')),
           ('g', 'git', None, _('use git extended diff format')),
          ] + templateopts,
          _('[-p] [-g]')),
     "unbundle":
         (unbundle,
          [('u', 'update', None,
            _('update to new branch head if changesets were unbundled'))],
          _('[-u] FILE...')),
     "^update|up|checkout|co":
         (update,
          [('C', 'clean', None, _('discard uncommitted changes (no backup)')),
           ('c', 'check', None, _('check for uncommitted changes')),
           ('d', 'date', '', _('tipmost revision matching date')),
           ('r', 'rev', '', _('revision'))],
          _('[-c] [-C] [-d DATE] [[-r] REV]')),
     "verify": (verify, []),
     "version": (version_, []),
 }
 
 norepo = ("clone init version help debugcommands debugcomplete debugdata"
           " debugindex debugindexdot debugdate debuginstall debugfsinfo")
 optionalrepo = ("identify paths serve showconfig debugancestor")

tests/coverage.py

@@ -1,1166 +1,1166 b''
 #!/usr/bin/env python
 #
 #             Perforce Defect Tracking Integration Project
 #              <http://www.ravenbrook.com/project/p4dti/>
 #
 #                   COVERAGE.PY -- COVERAGE TESTING
 #
 #             Gareth Rees, Ravenbrook Limited, 2001-12-04
 #                     Ned Batchelder, 2004-12-12
 #         http://nedbatchelder.com/code/modules/coverage.html
 #
 #
 # 1. INTRODUCTION
 #
 # This module provides coverage testing for Python code.
 #
 # The intended readership is all Python developers.
 #
 # This document is not confidential.
 #
 # See [GDR 2001-12-04a] for the command-line interface, programmatic
 # interface and limitations.  See [GDR 2001-12-04b] for requirements and
 # design.
 
 r"""Usage:
 
 coverage.py -x [-p] MODULE.py [ARG1 ARG2 ...]
     Execute module, passing the given command-line arguments, collecting
     coverage data. With the -p option, write to a temporary file containing
     the machine name and process ID.
 
 coverage.py -e
     Erase collected coverage data.
 
 coverage.py -c
     Collect data from multiple coverage files (as created by -p option above)
     and store it into a single file representing the union of the coverage.
 
 coverage.py -r [-m] [-o dir1,dir2,...] FILE1 FILE2 ...
     Report on the statement coverage for the given files.  With the -m
     option, show line numbers of the statements that weren't executed.
 
 coverage.py -a [-d dir] [-o dir1,dir2,...] FILE1 FILE2 ...
     Make annotated copies of the given files, marking statements that
     are executed with > and statements that are missed with !.  With
     the -d option, make the copies in that directory.  Without the -d
     option, make each copy in the same directory as the original.
 
 -o dir,dir2,...
   Omit reporting or annotating files when their filename path starts with
   a directory listed in the omit list.
   e.g. python coverage.py -i -r -o c:\python23,lib\enthought\traits
 
 Coverage data is saved in the file .coverage by default.  Set the
 COVERAGE_FILE environment variable to save it somewhere else."""
 
 __version__ = "2.85.20080914"    # see detailed history at the end of this file.
 
 import compiler
 import compiler.visitor
 import glob
 import os
 import re
 import string
 import symbol
 import sys
 import threading
 import token
 import types
 import zipimport
 from socket import gethostname
 
 # Python version compatibility
 try:
     strclass = basestring   # new to 2.3
 except:
     strclass = str
 
 # 2. IMPLEMENTATION
 #
 # This uses the "singleton" pattern.
 #
 # The word "morf" means a module object (from which the source file can
 # be deduced by suitable manipulation of the __file__ attribute) or a
 # filename.
 #
 # When we generate a coverage report we have to canonicalize every
 # filename in the coverage dictionary just in case it refers to the
 # module we are reporting on.  It seems a shame to throw away this
 # information so the data in the coverage dictionary is transferred to
 # the 'cexecuted' dictionary under the canonical filenames.
 #
 # The coverage dictionary is called "c" and the trace function "t".  The
 # reason for these short names is that Python looks up variables by name
 # at runtime and so execution time depends on the length of variables!
 # In the bottleneck of this application it's appropriate to abbreviate
 # names to increase speed.
 
 class StatementFindingAstVisitor(compiler.visitor.ASTVisitor):
     """ A visitor for a parsed Abstract Syntax Tree which finds executable
         statements.
     """
     def __init__(self, statements, excluded, suite_spots):
         compiler.visitor.ASTVisitor.__init__(self)
         self.statements = statements
         self.excluded = excluded
         self.suite_spots = suite_spots
         self.excluding_suite = 0
 
     def doRecursive(self, node):
         for n in node.getChildNodes():
             self.dispatch(n)
 
     visitStmt = visitModule = doRecursive
 
     def doCode(self, node):
         if hasattr(node, 'decorators') and node.decorators:
             self.dispatch(node.decorators)
             self.recordAndDispatch(node.code)
         else:
             self.doSuite(node, node.code)
 
     visitFunction = visitClass = doCode
 
     def getFirstLine(self, node):
         # Find the first line in the tree node.
         lineno = node.lineno
         for n in node.getChildNodes():
             f = self.getFirstLine(n)
             if lineno and f:
                 lineno = min(lineno, f)
             else:
                 lineno = lineno or f
         return lineno
 
     def getLastLine(self, node):
         # Find the first line in the tree node.
         lineno = node.lineno
         for n in node.getChildNodes():
             lineno = max(lineno, self.getLastLine(n))
         return lineno
 
     def doStatement(self, node):
         self.recordLine(self.getFirstLine(node))
 
     visitAssert = visitAssign = visitAssTuple = visitPrint = \
         visitPrintnl = visitRaise = visitSubscript = visitDecorators = \
         doStatement
 
     def visitPass(self, node):
         # Pass statements have weird interactions with docstrings. If
         # this pass statement is part of one of those pairs, claim
         # that the statement is on the later of the two lines.
         l = node.lineno
         if l:
             lines = self.suite_spots.get(l, [l, l])
             self.statements[lines[1]] = 1
 
     def visitDiscard(self, node):
         # Discard nodes are statements that execute an expression, but then
         # discard the results.  This includes function calls, so we can't
         # ignore them all.  But if the expression is a constant, the statement
         # won't be "executed", so don't count it now.
         if node.expr.__class__.__name__ != 'Const':
             self.doStatement(node)
 
     def recordNodeLine(self, node):
         # Stmt nodes often have None, but shouldn't claim the first line of
         # their children (because the first child might be an ignorable line
         # like "global a").
         if node.__class__.__name__ != 'Stmt':
             return self.recordLine(self.getFirstLine(node))
         else:
             return 0
 
     def recordLine(self, lineno):
         # Returns a bool, whether the line is included or excluded.
         if lineno:
             # Multi-line tests introducing suites have to get charged to their
             # keyword.
             if lineno in self.suite_spots:
                 lineno = self.suite_spots[lineno][0]
             # If we're inside an excluded suite, record that this line was
             # excluded.
             if self.excluding_suite:
                 self.excluded[lineno] = 1
                 return 0
             # If this line is excluded, or suite_spots maps this line to
             # another line that is exlcuded, then we're excluded.
             elif self.excluded.has_key(lineno) or \
                  self.suite_spots.has_key(lineno) and \
                  self.excluded.has_key(self.suite_spots[lineno][1]):
                 return 0
             # Otherwise, this is an executable line.
             else:
                 self.statements[lineno] = 1
                 return 1
         return 0
 
     default = recordNodeLine
 
     def recordAndDispatch(self, node):
         self.recordNodeLine(node)
         self.dispatch(node)
 
     def doSuite(self, intro, body, exclude=0):
         exsuite = self.excluding_suite
         if exclude or (intro and not self.recordNodeLine(intro)):
             self.excluding_suite = 1
         self.recordAndDispatch(body)
         self.excluding_suite = exsuite
 
     def doPlainWordSuite(self, prevsuite, suite):
         # Finding the exclude lines for else's is tricky, because they aren't
         # present in the compiler parse tree.  Look at the previous suite,
         # and find its last line.  If any line between there and the else's
         # first line are excluded, then we exclude the else.
         lastprev = self.getLastLine(prevsuite)
         firstelse = self.getFirstLine(suite)
         for l in range(lastprev + 1, firstelse):
             if self.suite_spots.has_key(l):
                 self.doSuite(None, suite, exclude=self.excluded.has_key(l))
                 break
         else:
             self.doSuite(None, suite)
 
     def doElse(self, prevsuite, node):
         if node.else_:
             self.doPlainWordSuite(prevsuite, node.else_)
 
     def visitFor(self, node):
         self.doSuite(node, node.body)
         self.doElse(node.body, node)
 
     visitWhile = visitFor
 
     def visitIf(self, node):
         # The first test has to be handled separately from the rest.
         # The first test is credited to the line with the "if", but the others
         # are credited to the line with the test for the elif.
         self.doSuite(node, node.tests[0][1])
         for t, n in node.tests[1:]:
             self.doSuite(t, n)
         self.doElse(node.tests[-1][1], node)
 
     def visitTryExcept(self, node):
         self.doSuite(node, node.body)
         for i in range(len(node.handlers)):
             a, b, h = node.handlers[i]
             if not a:
                 # It's a plain "except:".  Find the previous suite.
                 if i > 0:
                     prev = node.handlers[i - 1][2]
                 else:
                     prev = node.body
                 self.doPlainWordSuite(prev, h)
             else:
                 self.doSuite(a, h)
         self.doElse(node.handlers[-1][2], node)
 
     def visitTryFinally(self, node):
         self.doSuite(node, node.body)
         self.doPlainWordSuite(node.body, node.final)
 
     def visitWith(self, node):
         self.doSuite(node, node.body)
 
     def visitGlobal(self, node):
         # "global" statements don't execute like others (they don't call the
         # trace function), so don't record their line numbers.
         pass
 
 the_coverage = None
 
 class CoverageException(Exception):
     pass
 
 class coverage:
     # Name of the cache file (unless environment variable is set).
     cache_default = ".coverage"
 
     # Environment variable naming the cache file.
     cache_env = "COVERAGE_FILE"
 
     # A dictionary with an entry for (Python source file name, line number
     # in that file) if that line has been executed.
     c = {}
 
     # A map from canonical Python source file name to a dictionary in
     # which there's an entry for each line number that has been
     # executed.
     cexecuted = {}
 
     # Cache of results of calling the analysis2() method, so that you can
     # specify both -r and -a without doing double work.
     analysis_cache = {}
 
     # Cache of results of calling the canonical_filename() method, to
     # avoid duplicating work.
     canonical_filename_cache = {}
 
     def __init__(self):
         global the_coverage
         if the_coverage:
             raise CoverageException("Only one coverage object allowed.")
         self.usecache = 1
         self.cache = None
         self.parallel_mode = False
         self.exclude_re = ''
         self.nesting = 0
         self.cstack = []
         self.xstack = []
         self.relative_dir = self.abs_file(os.curdir)+os.sep
         self.exclude('# *pragma[: ]*[nN][oO] *[cC][oO][vV][eE][rR]')
 
     # t(f, x, y).  This method is passed to sys.settrace as a trace function.
     # See [van Rossum 2001-07-20b, 9.2] for an explanation of sys.settrace and
     # the arguments and return value of the trace function.
     # See [van Rossum 2001-07-20a, 3.2] for a description of frame and code
     # objects.
     def t(self, f, w, unused): #pragma: no cover
         if w == 'line':
             self.c[(f.f_code.co_filename, f.f_lineno)] = 1
             #-for c in self.cstack:
             #-    c[(f.f_code.co_filename, f.f_lineno)] = 1
         return self.t
 
     def help(self, error=None):     #pragma: no cover
         if error:
             print error
             print
         print __doc__
         sys.exit(1)
 
     def command_line(self, argv, help_fn=None):
         import getopt
         help_fn = help_fn or self.help
         settings = {}
         optmap = {
             '-a': 'annotate',
             '-c': 'collect',
             '-d:': 'directory=',
             '-e': 'erase',
             '-h': 'help',
             '-i': 'ignore-errors',
             '-m': 'show-missing',
             '-p': 'parallel-mode',
             '-r': 'report',
             '-x': 'execute',
             '-o:': 'omit=',
             }
         short_opts = string.join(map(lambda o: o[1:], optmap.keys()), '')
         long_opts = optmap.values()
         options, args = getopt.getopt(argv, short_opts, long_opts)
         for o, a in options:
             if optmap.has_key(o):
                 settings[optmap[o]] = 1
             elif optmap.has_key(o + ':'):
                 settings[optmap[o + ':']] = a
             elif o[2:] in long_opts:
                 settings[o[2:]] = 1
             elif o[2:] + '=' in long_opts:
                 settings[o[2:]+'='] = a
             else:       #pragma: no cover
                 # Can't get here, because getopt won't return anything unknown.
                 pass
 
         if settings.get('help'):
             help_fn()
 
         for i in ['erase', 'execute']:
             for j in ['annotate', 'report', 'collect']:
                 if settings.get(i) and settings.get(j):
                     help_fn("You can't specify the '%s' and '%s' "
                               "options at the same time." % (i, j))
 
         args_needed = (settings.get('execute')
                        or settings.get('annotate')
                        or settings.get('report'))
         action = (settings.get('erase')
                   or settings.get('collect')
                   or args_needed)
         if not action:
             help_fn("You must specify at least one of -e, -x, -c, -r, or -a.")
         if not args_needed and args:
             help_fn("Unexpected arguments: %s" % " ".join(args))
 
         self.parallel_mode = settings.get('parallel-mode')
         self.get_ready()
 
         if settings.get('erase'):
             self.erase()
         if settings.get('execute'):
             if not args:
                 help_fn("Nothing to do.")
             sys.argv = args
             self.start()
             import __main__
             sys.path[0] = os.path.dirname(sys.argv[0])
             execfile(sys.argv[0], __main__.__dict__)
         if settings.get('collect'):
             self.collect()
         if not args:
             args = self.cexecuted.keys()
 
         ignore_errors = settings.get('ignore-errors')
         show_missing = settings.get('show-missing')
         directory = settings.get('directory=')
 
         omit = settings.get('omit=')
         if omit is not None:
             omit = [self.abs_file(p) for p in omit.split(',')]
         else:
             omit = []
 
         if settings.get('report'):
             self.report(args, show_missing, ignore_errors, omit_prefixes=omit)
         if settings.get('annotate'):
             self.annotate(args, directory, ignore_errors, omit_prefixes=omit)
 
     def use_cache(self, usecache, cache_file=None):
         self.usecache = usecache
         if cache_file and not self.cache:
             self.cache_default = cache_file
 
     def get_ready(self, parallel_mode=False):
         if self.usecache and not self.cache:
             self.cache = os.environ.get(self.cache_env, self.cache_default)
             if self.parallel_mode:
                 self.cache += "." + gethostname() + "." + str(os.getpid())
             self.restore()
         self.analysis_cache = {}
 
     def start(self, parallel_mode=False):
         self.get_ready()
         if self.nesting == 0:                               #pragma: no cover
             sys.settrace(self.t)
             if hasattr(threading, 'settrace'):
                 threading.settrace(self.t)
         self.nesting += 1
 
     def stop(self):
         self.nesting -= 1
         if self.nesting == 0:                               #pragma: no cover
             sys.settrace(None)
             if hasattr(threading, 'settrace'):
                 threading.settrace(None)
 
     def erase(self):
         self.get_ready()
         self.c = {}
         self.analysis_cache = {}
         self.cexecuted = {}
         if self.cache and os.path.exists(self.cache):
             os.remove(self.cache)
 
     def exclude(self, re):
         if self.exclude_re:
             self.exclude_re += "|"
         self.exclude_re += "(" + re + ")"
 
     def begin_recursive(self):
         self.cstack.append(self.c)
         self.xstack.append(self.exclude_re)
 
     def end_recursive(self):
         self.c = self.cstack.pop()
         self.exclude_re = self.xstack.pop()
 
     # save().  Save coverage data to the coverage cache.
 
     def save(self):
         if self.usecache and self.cache:
             self.canonicalize_filenames()
             cache = open(self.cache, 'wb')
             import marshal
             marshal.dump(self.cexecuted, cache)
             cache.close()
 
     # restore().  Restore coverage data from the coverage cache (if it exists).
 
     def restore(self):
         self.c = {}
         self.cexecuted = {}
         assert self.usecache
         if os.path.exists(self.cache):
             self.cexecuted = self.restore_file(self.cache)
 
     def restore_file(self, file_name):
         try:
             cache = open(file_name, 'rb')
             import marshal
             cexecuted = marshal.load(cache)
             cache.close()
             if isinstance(cexecuted, types.DictType):
                 return cexecuted
             else:
                 return {}
         except:
             return {}
 
     # collect(). Collect data in multiple files produced by parallel mode
 
     def collect(self):
         cache_dir, local = os.path.split(self.cache)
         for f in os.listdir(cache_dir or '.'):
             if not f.startswith(local):
                 continue
 
             full_path = os.path.join(cache_dir, f)
             cexecuted = self.restore_file(full_path)
             self.merge_data(cexecuted)
 
     def merge_data(self, new_data):
         for file_name, file_data in new_data.items():
             if self.cexecuted.has_key(file_name):
                 self.merge_file_data(self.cexecuted[file_name], file_data)
             else:
                 self.cexecuted[file_name] = file_data
 
     def merge_file_data(self, cache_data, new_data):
         for line_number in new_data.keys():
             if not cache_data.has_key(line_number):
                 cache_data[line_number] = new_data[line_number]
 
     def abs_file(self, filename):
         """ Helper function to turn a filename into an absolute normalized
             filename.
         """
         return os.path.normcase(os.path.abspath(os.path.realpath(filename)))
 
     def get_zip_data(self, filename):
         """ Get data from `filename` if it is a zip file path, or return None
             if it is not.
         """
         markers = ['.zip'+os.sep, '.egg'+os.sep]
         for marker in markers:
             if marker in filename:
                 parts = filename.split(marker)
                 try:
                     zi = zipimport.zipimporter(parts[0]+marker[:-1])
                 except zipimport.ZipImportError:
                     continue
                 try:
                     data = zi.get_data(parts[1])
                 except IOError:
                     continue
                 return data
         return None
 
     # canonical_filename(filename).  Return a canonical filename for the
     # file (that is, an absolute path with no redundant components and
     # normalized case).  See [GDR 2001-12-04b, 3.3].
 
     def canonical_filename(self, filename):
         if not self.canonical_filename_cache.has_key(filename):
             f = filename
             if os.path.isabs(f) and not os.path.exists(f):
                 if not self.get_zip_data(f):
                     f = os.path.basename(f)
             if not os.path.isabs(f):
                 for path in [os.curdir] + sys.path:
                     g = os.path.join(path, f)
                     if os.path.exists(g):
                         f = g
                         break
             cf = self.abs_file(f)
             self.canonical_filename_cache[filename] = cf
         return self.canonical_filename_cache[filename]
 
     # canonicalize_filenames().  Copy results from "c" to "cexecuted",
     # canonicalizing filenames on the way.  Clear the "c" map.
 
     def canonicalize_filenames(self):
         for filename, lineno in self.c.keys():
             if filename == '<string>':
                 # Can't do anything useful with exec'd strings, so skip them.
                 continue
             f = self.canonical_filename(filename)
             if not self.cexecuted.has_key(f):
                 self.cexecuted[f] = {}
             self.cexecuted[f][lineno] = 1
         self.c = {}
 
     # morf_filename(morf).  Return the filename for a module or file.
 
     def morf_filename(self, morf):
         if hasattr(morf, '__file__'):
             f = morf.__file__
         else:
             f = morf
         return self.canonical_filename(f)
 
     # analyze_morf(morf).  Analyze the module or filename passed as
     # the argument.  If the source code can't be found, raise an error.
     # Otherwise, return a tuple of (1) the canonical filename of the
     # source code for the module, (2) a list of lines of statements
     # in the source code, (3) a list of lines of excluded statements,
     # and (4), a map of line numbers to multi-line line number ranges, for
     # statements that cross lines.
     def analyze_morf(self, morf):
         if self.analysis_cache.has_key(morf):
             return self.analysis_cache[morf]
         filename = self.morf_filename(morf)
         ext = os.path.splitext(filename)[1]
         source, sourcef = None, None
         if ext == '.pyc':
             if not os.path.exists(filename[:-1]):
                 source = self.get_zip_data(filename[:-1])
                 if not source:
                     raise CoverageException(
                         "No source for compiled code '%s'." % filename
                         )
             filename = filename[:-1]
         if not source:
             sourcef = open(filename, 'rU')
             source = sourcef.read()
         try:
             lines, excluded_lines, line_map = self.find_executable_statements(
                 source, exclude=self.exclude_re
                 )
         except SyntaxError, synerr:
             raise CoverageException(
                 "Couldn't parse '%s' as Python source: '%s' at line %d" %
                     (filename, synerr.msg, synerr.lineno)
                 )
         if sourcef:
             sourcef.close()
         result = filename, lines, excluded_lines, line_map
         self.analysis_cache[morf] = result
         return result
 
     def first_line_of_tree(self, tree):
         while True:
             if len(tree) == 3 and type(tree[2]) == type(1):
                 return tree[2]
             tree = tree[1]
 
     def last_line_of_tree(self, tree):
         while True:
             if len(tree) == 3 and type(tree[2]) == type(1):
                 return tree[2]
             tree = tree[-1]
 
     def find_docstring_pass_pair(self, tree, spots):
         for i in range(1, len(tree)):
             if (self.is_string_constant(tree[i]) and
                 self.is_pass_stmt(tree[i + 1])):
                 first_line = self.first_line_of_tree(tree[i])
                 last_line = self.last_line_of_tree(tree[i + 1])
                 self.record_multiline(spots, first_line, last_line)
 
     def is_string_constant(self, tree):
         try:
             return tree[0] == symbol.stmt and tree[1][1][1][0] == symbol.expr_stmt
         except:
             return False
 
     def is_pass_stmt(self, tree):
         try:
             return tree[0] == symbol.stmt and tree[1][1][1][0] == symbol.pass_stmt
         except:
             return False
 
     def record_multiline(self, spots, i, j):
         for l in range(i, j + 1):
             spots[l] = (i, j)
 
     def get_suite_spots(self, tree, spots):
         """ Analyze a parse tree to find suite introducers which span a number
             of lines.
         """
         for i in range(1, len(tree)):
             if type(tree[i]) == type(()):
                 if tree[i][0] == symbol.suite:
                     # Found a suite, look back for the colon and keyword.
                     lineno_colon = lineno_word = None
                     for j in range(i - 1, 0, -1):
                         if tree[j][0] == token.COLON:
                             # Colons are never executed themselves: we want the
                             # line number of the last token before the colon.
                             lineno_colon = self.last_line_of_tree(tree[j - 1])
                         elif tree[j][0] == token.NAME:
                             if tree[j][1] == 'elif':
                                 # Find the line number of the first
                                 # non-terminal after the keyword.
                                 t = tree[j + 1]
                                 while t and token.ISNONTERMINAL(t[0]):
                                     t = t[1]
                                 if t:
                                     lineno_word = t[2]
                             else:
                                 lineno_word = tree[j][2]
                             break
                         elif tree[j][0] == symbol.except_clause:
                             # "except" clauses look like:
                             # ('except_clause', ('NAME', 'except', lineno),...)
                             if tree[j][1][0] == token.NAME:
                                 lineno_word = tree[j][1][2]
                                 break
                     if lineno_colon and lineno_word:
                         # Found colon and keyword, mark all the lines
                         # between the two with the two line numbers.
                         self.record_multiline(spots, lineno_word, lineno_colon)
 
                     # "pass" statements are tricky: different versions
                     # of Python treat them differently, especially in
                     # the common case of a function with a doc string
                     # and a single pass statement.
                     self.find_docstring_pass_pair(tree[i], spots)
                 elif tree[i][0] == symbol.simple_stmt:
                     first_line = self.first_line_of_tree(tree[i])
                     last_line = self.last_line_of_tree(tree[i])
                     if first_line != last_line:
                         self.record_multiline(spots, first_line, last_line)
                 self.get_suite_spots(tree[i], spots)
 
     def find_executable_statements(self, text, exclude=None):
         # Find lines which match an exclusion pattern.
         excluded = {}
         suite_spots = {}
         if exclude:
             reExclude = re.compile(exclude)
             lines = text.split('\n')
             for i in range(len(lines)):
                 if reExclude.search(lines[i]):
                     excluded[i + 1] = 1
 
         # Parse the code and analyze the parse tree to find out which statements
         # are multiline, and where suites begin and end.
         import parser
         tree = parser.suite(text+'\n\n').totuple(1)
         self.get_suite_spots(tree, suite_spots)
         #print "Suite spots:", suite_spots
 
         # Use the compiler module to parse the text and find the executable
         # statements.  We add newlines to be impervious to final partial lines.
         statements = {}
         ast = compiler.parse(text+'\n\n')
         visitor = StatementFindingAstVisitor(statements, excluded, suite_spots)
         compiler.walk(ast, visitor, walker=visitor)
 
         lines = statements.keys()
         lines.sort()
         excluded_lines = excluded.keys()
         excluded_lines.sort()
         return lines, excluded_lines, suite_spots
 
     # format_lines(statements, lines).  Format a list of line numbers
     # for printing by coalescing groups of lines as long as the lines
     # represent consecutive statements.  This will coalesce even if
     # there are gaps between statements, so if statements =
     # [1,2,3,4,5,10,11,12,13,14] and lines = [1,2,5,10,11,13,14] then
     # format_lines will return "1-2, 5-11, 13-14".
 
     def format_lines(self, statements, lines):
         pairs = []
         i = 0
         j = 0
         start = None
         pairs = []
         while i < len(statements) and j < len(lines):
             if statements[i] == lines[j]:
                 if start == None:
                     start = lines[j]
                 end = lines[j]
                 j = j + 1
             elif start:
                 pairs.append((start, end))
                 start = None
             i = i + 1
         if start:
             pairs.append((start, end))
         def stringify(pair):
             start, end = pair
             if start == end:
                 return "%d" % start
             else:
                 return "%d-%d" % (start, end)
         ret = string.join(map(stringify, pairs), ", ")
         return ret
 
     # Backward compatibility with version 1.
     def analysis(self, morf):
         f, s, _, m, mf = self.analysis2(morf)
         return f, s, m, mf
 
     def analysis2(self, morf):
         filename, statements, excluded, line_map = self.analyze_morf(morf)
         self.canonicalize_filenames()
         if not self.cexecuted.has_key(filename):
             self.cexecuted[filename] = {}
         missing = []
         for line in statements:
             lines = line_map.get(line, [line, line])
             for l in range(lines[0], lines[1]+1):
                 if self.cexecuted[filename].has_key(l):
                     break
             else:
                 missing.append(line)
         return (filename, statements, excluded, missing,
                 self.format_lines(statements, missing))
 
     def relative_filename(self, filename):
         """ Convert filename to relative filename from self.relative_dir.
         """
         return filename.replace(self.relative_dir, "")
 
     def morf_name(self, morf):
         """ Return the name of morf as used in report.
         """
         if hasattr(morf, '__name__'):
             return morf.__name__
         else:
             return self.relative_filename(os.path.splitext(morf)[0])
 
     def filter_by_prefix(self, morfs, omit_prefixes):
         """ Return list of morfs where the morf name does not begin
             with any one of the omit_prefixes.
         """
         filtered_morfs = []
         for morf in morfs:
             for prefix in omit_prefixes:
                 if self.morf_name(morf).startswith(prefix):
                     break
             else:
                 filtered_morfs.append(morf)
 
         return filtered_morfs
 
     def morf_name_compare(self, x, y):
         return cmp(self.morf_name(x), self.morf_name(y))
 
     def report(self, morfs, show_missing=1, ignore_errors=0, file=None,
                omit_prefixes=[]):
         if not isinstance(morfs, types.ListType):
             morfs = [morfs]
         # On windows, the shell doesn't expand wildcards.  Do it here.
         globbed = []
         for morf in morfs:
             if isinstance(morf, strclass):
                 globbed.extend(glob.glob(morf))
             else:
                 globbed.append(morf)
         morfs = globbed
 
         morfs = self.filter_by_prefix(morfs, omit_prefixes)
         morfs.sort(self.morf_name_compare)
 
-        max_name = max([5,] + map(len, map(self.morf_name, morfs)))
+        max_name = max([5] + map(len, map(self.morf_name, morfs)))
         fmt_name = "%%- %ds  " % max_name
         fmt_err = fmt_name + "%s: %s"
         header = fmt_name % "Name" + " Stmts   Exec  Cover"
         fmt_coverage = fmt_name + "% 6d % 6d % 5d%%"
         if show_missing:
             header = header + "   Missing"
             fmt_coverage = fmt_coverage + "   %s"
         if not file:
             file = sys.stdout
         print >> file, header
         print >> file, "-" * len(header)
         total_statements = 0
         total_executed = 0
         for morf in morfs:
             name = self.morf_name(morf)
             try:
                 _, statements, _, missing, readable  = self.analysis2(morf)
                 n = len(statements)
                 m = n - len(missing)
                 if n > 0:
                     pc = 100.0 * m / n
                 else:
                     pc = 100.0
                 args = (name, n, m, pc)
                 if show_missing:
                     args = args + (readable,)
                 print >>file, fmt_coverage % args
                 total_statements = total_statements + n
                 total_executed = total_executed + m
             except KeyboardInterrupt:                       #pragma: no cover
                 raise
             except:
                 if not ignore_errors:
                     typ, msg = sys.exc_info()[:2]
                     print >>file, fmt_err % (name, typ, msg)
         if len(morfs) > 1:
             print >>file, "-" * len(header)
             if total_statements > 0:
                 pc = 100.0 * total_executed / total_statements
             else:
                 pc = 100.0
             args = ("TOTAL", total_statements, total_executed, pc)
             if show_missing:
                 args = args + ("",)
             print >>file, fmt_coverage % args
 
     # annotate(morfs, ignore_errors).
 
     blank_re = re.compile(r"\s*(#|$)")
     else_re = re.compile(r"\s*else\s*:\s*(#|$)")
 
     def annotate(self, morfs, directory=None, ignore_errors=0, omit_prefixes=[]):
         morfs = self.filter_by_prefix(morfs, omit_prefixes)
         for morf in morfs:
             try:
                 filename, statements, excluded, missing, _ = self.analysis2(morf)
                 self.annotate_file(filename, statements, excluded, missing,
                                    directory)
             except KeyboardInterrupt:
                 raise
             except:
                 if not ignore_errors:
                     raise
 
     def annotate_file(self, filename, statements, excluded, missing,
                       directory=None):
         source = open(filename, 'r')
         if directory:
             dest_file = os.path.join(directory,
                                      os.path.basename(filename)
                                      + ',cover')
         else:
             dest_file = filename + ',cover'
         dest = open(dest_file, 'w')
         lineno = 0
         i = 0
         j = 0
         covered = 1
         while 1:
             line = source.readline()
             if line == '':
                 break
             lineno = lineno + 1
             while i < len(statements) and statements[i] < lineno:
                 i = i + 1
             while j < len(missing) and missing[j] < lineno:
                 j = j + 1
             if i < len(statements) and statements[i] == lineno:
                 covered = j >= len(missing) or missing[j] > lineno
             if self.blank_re.match(line):
                 dest.write('  ')
             elif self.else_re.match(line):
                 # Special logic for lines containing only 'else:'.
                 # See [GDR 2001-12-04b, 3.2].
                 if i >= len(statements) and j >= len(missing):
                     dest.write('! ')
                 elif i >= len(statements) or j >= len(missing):
                     dest.write('> ')
                 elif statements[i] == missing[j]:
                     dest.write('! ')
                 else:
                     dest.write('> ')
             elif lineno in excluded:
                 dest.write('- ')
             elif covered:
                 dest.write('> ')
             else:
                 dest.write('! ')
             dest.write(line)
         source.close()
         dest.close()
 
 # Singleton object.
 the_coverage = coverage()
 
 # Module functions call methods in the singleton object.
 def use_cache(*args, **kw):
     return the_coverage.use_cache(*args, **kw)
 
 def start(*args, **kw):
     return the_coverage.start(*args, **kw)
 
 def stop(*args, **kw):
     return the_coverage.stop(*args, **kw)
 
 def erase(*args, **kw):
     return the_coverage.erase(*args, **kw)
 
 def begin_recursive(*args, **kw):
     return the_coverage.begin_recursive(*args, **kw)
 
 def end_recursive(*args, **kw):
     return the_coverage.end_recursive(*args, **kw)
 
 def exclude(*args, **kw):
     return the_coverage.exclude(*args, **kw)
 
 def analysis(*args, **kw):
     return the_coverage.analysis(*args, **kw)
 
 def analysis2(*args, **kw):
     return the_coverage.analysis2(*args, **kw)
 
 def report(*args, **kw):
     return the_coverage.report(*args, **kw)
 
 def annotate(*args, **kw):
     return the_coverage.annotate(*args, **kw)
 
 def annotate_file(*args, **kw):
     return the_coverage.annotate_file(*args, **kw)
 
 # Save coverage data when Python exits.  (The atexit module wasn't
 # introduced until Python 2.0, so use sys.exitfunc when it's not
 # available.)
 try:
     import atexit
     atexit.register(the_coverage.save)
 except ImportError:
     sys.exitfunc = the_coverage.save
 
 def main():
     the_coverage.command_line(sys.argv[1:])
 
 # Command-line interface.
 if __name__ == '__main__':
     main()
 
 
 # A. REFERENCES
 #
 # [GDR 2001-12-04a] "Statement coverage for Python"; Gareth Rees;
 # Ravenbrook Limited; 2001-12-04;
 # <http://www.nedbatchelder.com/code/modules/rees-coverage.html>.
 #
 # [GDR 2001-12-04b] "Statement coverage for Python: design and
 # analysis"; Gareth Rees; Ravenbrook Limited; 2001-12-04;
 # <http://www.nedbatchelder.com/code/modules/rees-design.html>.
 #
 # [van Rossum 2001-07-20a] "Python Reference Manual (releae 2.1.1)";
 # Guide van Rossum; 2001-07-20;
 # <http://www.python.org/doc/2.1.1/ref/ref.html>.
 #
 # [van Rossum 2001-07-20b] "Python Library Reference"; Guido van Rossum;
 # 2001-07-20; <http://www.python.org/doc/2.1.1/lib/lib.html>.
 #
 #
 # B. DOCUMENT HISTORY
 #
 # 2001-12-04 GDR Created.
 #
 # 2001-12-06 GDR Added command-line interface and source code
 # annotation.
 #
 # 2001-12-09 GDR Moved design and interface to separate documents.
 #
 # 2001-12-10 GDR Open cache file as binary on Windows.  Allow
 # simultaneous -e and -x, or -a and -r.
 #
 # 2001-12-12 GDR Added command-line help.  Cache analysis so that it
 # only needs to be done once when you specify -a and -r.
 #
 # 2001-12-13 GDR Improved speed while recording.  Portable between
 # Python 1.5.2 and 2.1.1.
 #
 # 2002-01-03 GDR Module-level functions work correctly.
 #
 # 2002-01-07 GDR Update sys.path when running a file with the -x option,
 # so that it matches the value the program would get if it were run on
 # its own.
 #
 # 2004-12-12 NMB Significant code changes.
 # - Finding executable statements has been rewritten so that docstrings and
 #   other quirks of Python execution aren't mistakenly identified as missing
 #   lines.
 # - Lines can be excluded from consideration, even entire suites of lines.
 # - The filesystem cache of covered lines can be disabled programmatically.
 # - Modernized the code.
 #
 # 2004-12-14 NMB Minor tweaks.  Return 'analysis' to its original behavior
 # and add 'analysis2'.  Add a global for 'annotate', and factor it, adding
 # 'annotate_file'.
 #
 # 2004-12-31 NMB Allow for keyword arguments in the module global functions.
 # Thanks, Allen.
 #
 # 2005-12-02 NMB Call threading.settrace so that all threads are measured.
 # Thanks Martin Fuzzey. Add a file argument to report so that reports can be
 # captured to a different destination.
 #
 # 2005-12-03 NMB coverage.py can now measure itself.
 #
 # 2005-12-04 NMB Adapted Greg Rogers' patch for using relative filenames,
 # and sorting and omitting files to report on.
 #
 # 2006-07-23 NMB Applied Joseph Tate's patch for function decorators.
 #
 # 2006-08-21 NMB Applied Sigve Tjora and Mark van der Wal's fixes for argument
 # handling.
 #
 # 2006-08-22 NMB Applied Geoff Bache's parallel mode patch.
 #
 # 2006-08-23 NMB Refactorings to improve testability.  Fixes to command-line
 # logic for parallel mode and collect.
 #
 # 2006-08-25 NMB "#pragma: nocover" is excluded by default.
 #
 # 2006-09-10 NMB Properly ignore docstrings and other constant expressions that
 # appear in the middle of a function, a problem reported by Tim Leslie.
 # Minor changes to avoid lint warnings.
 #
 # 2006-09-17 NMB coverage.erase() shouldn't clobber the exclude regex.
 # Change how parallel mode is invoked, and fix erase() so that it erases the
 # cache when called programmatically.
 #
 # 2007-07-21 NMB In reports, ignore code executed from strings, since we can't
 # do anything useful with it anyway.
 # Better file handling on Linux, thanks Guillaume Chazarain.
 # Better shell support on Windows, thanks Noel O'Boyle.
 # Python 2.2 support maintained, thanks Catherine Proulx.
 #
 # 2007-07-22 NMB Python 2.5 now fully supported. The method of dealing with
 # multi-line statements is now less sensitive to the exact line that Python
 # reports during execution. Pass statements are handled specially so that their
 # disappearance during execution won't throw off the measurement.
 #
 # 2007-07-23 NMB Now Python 2.5 is *really* fully supported: the body of the
 # new with statement is counted as executable.
 #
 # 2007-07-29 NMB Better packaging.
 #
 # 2007-09-30 NMB Don't try to predict whether a file is Python source based on
 # the extension. Extensionless files are often Pythons scripts. Instead, simply
 # parse the file and catch the syntax errors.  Hat tip to Ben Finney.
 #
 # 2008-05-25 NMB Open files in rU mode to avoid line ending craziness.
 # Thanks, Edward Loper.
 #
 # 2008-09-14 NMB Add support for finding source files in eggs.
 # Don't check for morf's being instances of ModuleType, instead use duck typing
 # so that pseudo-modules can participate. Thanks, Imri Goldberg.
 # Use os.realpath as part of the fixing of filenames so that symlinks won't
 # confuse things.  Thanks, Patrick Mezard.
 #
 #
 # C. COPYRIGHT AND LICENCE
 #
 # Copyright 2001 Gareth Rees.  All rights reserved.
 # Copyright 2004-2008 Ned Batchelder.  All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 # 1. Redistributions of source code must retain the above copyright
 #    notice, this list of conditions and the following disclaimer.
 #
 # 2. Redistributions in binary form must reproduce the above copyright
 #    notice, this list of conditions and the following disclaimer in the
 #    documentation and/or other materials provided with the
 #    distribution.
 #
 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 # HOLDERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 # BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 # OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 # TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 # USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 # DAMAGE.
 #
 # $Id: coverage.py 96 2008-09-14 18:34:13Z nedbat $

tests/run-tests.py

@@ -1,948 +1,948 b''
 #!/usr/bin/env python
 #
 # run-tests.py - Run a set of tests on Mercurial
 #
 # Copyright 2006 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 # Modifying this script is tricky because it has many modes:
 #   - serial (default) vs parallel (-jN, N > 1)
 #   - no coverage (default) vs coverage (-c, -C, -s)
 #   - temp install (default) vs specific hg script (--with-hg, --local)
 #   - tests are a mix of shell scripts and Python scripts
 #
 # If you change this script, it is recommended that you ensure you
 # haven't broken it by running it in various modes with a representative
 # sample of test scripts.  For example:
 #
 #  1) serial, no coverage, temp install:
 #      ./run-tests.py test-s*
 #  2) serial, no coverage, local hg:
 #      ./run-tests.py --local test-s*
 #  3) serial, coverage, temp install:
 #      ./run-tests.py -c test-s*
 #  4) serial, coverage, local hg:
 #      ./run-tests.py -c --local test-s*      # unsupported
 #  5) parallel, no coverage, temp install:
 #      ./run-tests.py -j2 test-s*
 #  6) parallel, no coverage, local hg:
 #      ./run-tests.py -j2 --local test-s*
 #  7) parallel, coverage, temp install:
 #      ./run-tests.py -j2 -c test-s*          # currently broken
 #  8) parallel, coverage, local install:
 #      ./run-tests.py -j2 -c --local test-s*  # unsupported (and broken)
 #  9) parallel, custom tmp dir:
 #      ./run-tests.py -j2 --tmpdir /tmp/myhgtests
 #
 # (You could use any subset of the tests: test-s* happens to match
 # enough that it's worth doing parallel runs, few enough that it
 # completes fairly quickly, includes both shell and Python scripts, and
 # includes some scripts that run daemon processes.)
 
 import difflib
 import errno
 import optparse
 import os
 import signal
 import subprocess
 import shutil
 import signal
 import sys
 import tempfile
 import time
 
 closefds = os.name == 'posix'
 def Popen4(cmd, bufsize=-1):
     p = subprocess.Popen(cmd, shell=True, bufsize=bufsize,
                          close_fds=closefds,
                          stdin=subprocess.PIPE, stdout=subprocess.PIPE,
                          stderr=subprocess.STDOUT)
     p.fromchild = p.stdout
     p.tochild = p.stdin
     p.childerr = p.stderr
     return p
 
 # reserved exit code to skip test (used by hghave)
 SKIPPED_STATUS = 80
 SKIPPED_PREFIX = 'skipped: '
 FAILED_PREFIX  = 'hghave check failed: '
 PYTHON = sys.executable
 
 requiredtools = ["python", "diff", "grep", "unzip", "gunzip", "bunzip2", "sed"]
 
 defaults = {
     'jobs': ('HGTEST_JOBS', 1),
     'timeout': ('HGTEST_TIMEOUT', 180),
     'port': ('HGTEST_PORT', 20059),
 }
 
 def parseargs():
     parser = optparse.OptionParser("%prog [options] [tests]")
     parser.add_option("-C", "--annotate", action="store_true",
         help="output files annotated with coverage")
     parser.add_option("--child", type="int",
         help="run as child process, summary to given fd")
     parser.add_option("-c", "--cover", action="store_true",
         help="print a test coverage report")
     parser.add_option("-f", "--first", action="store_true",
         help="exit on the first test failure")
     parser.add_option("-i", "--interactive", action="store_true",
         help="prompt to accept changed output")
     parser.add_option("-j", "--jobs", type="int",
         help="number of jobs to run in parallel"
              " (default: $%s or %d)" % defaults['jobs'])
     parser.add_option("-k", "--keywords",
         help="run tests matching keywords")
     parser.add_option("--keep-tmpdir", action="store_true",
         help="keep temporary directory after running tests")
     parser.add_option("--tmpdir", type="string",
         help="run tests in the given temporary directory"
              " (implies --keep-tmpdir)")
     parser.add_option("-d", "--debug", action="store_true",
         help="debug mode: write output of test scripts to console"
              " rather than capturing and diff'ing it (disables timeout)")
     parser.add_option("-R", "--restart", action="store_true",
         help="restart at last error")
     parser.add_option("-p", "--port", type="int",
         help="port on which servers should listen"
              " (default: $%s or %d)" % defaults['port'])
     parser.add_option("-r", "--retest", action="store_true",
         help="retest failed tests")
     parser.add_option("-s", "--cover_stdlib", action="store_true",
         help="print a test coverage report inc. standard libraries")
     parser.add_option("-S", "--noskips", action="store_true",
         help="don't report skip tests verbosely")
     parser.add_option("-t", "--timeout", type="int",
         help="kill errant tests after TIMEOUT seconds"
              " (default: $%s or %d)" % defaults['timeout'])
     parser.add_option("-v", "--verbose", action="store_true",
         help="output verbose messages")
     parser.add_option("-n", "--nodiff", action="store_true",
         help="skip showing test changes")
     parser.add_option("--with-hg", type="string",
         metavar="HG",
         help="test using specified hg script rather than a "
              "temporary installation")
     parser.add_option("--local", action="store_true",
         help="shortcut for --with-hg=<testdir>/../hg")
     parser.add_option("--pure", action="store_true",
         help="use pure Python code instead of C extensions")
     parser.add_option("-3", "--py3k-warnings", action="store_true",
         help="enable Py3k warnings on Python 2.6+")
     parser.add_option("--inotify", action="store_true",
         help="enable inotify extension when running tests")
     parser.add_option("--blacklist", action="append",
         help="skip tests listed in the specified blacklist file")
 
     for option, default in defaults.items():
         defaults[option] = int(os.environ.get(*default))
     parser.set_defaults(**defaults)
     (options, args) = parser.parse_args()
 
     if options.with_hg:
         if not (os.path.isfile(options.with_hg) and
                 os.access(options.with_hg, os.X_OK)):
             parser.error('--with-hg must specify an executable hg script')
         if not os.path.basename(options.with_hg) == 'hg':
             sys.stderr.write('warning: --with-hg should specify an hg script')
     if options.local:
         testdir = os.path.dirname(os.path.realpath(sys.argv[0]))
         hgbin = os.path.join(os.path.dirname(testdir), 'hg')
         if not os.access(hgbin, os.X_OK):
             parser.error('--local specified, but %r not found or not executable'
                          % hgbin)
         options.with_hg = hgbin
 
     options.anycoverage = (options.cover or
                            options.cover_stdlib or
                            options.annotate)
 
     if options.anycoverage and options.with_hg:
         # I'm not sure if this is a fundamental limitation or just a
         # bug.  But I don't want to waste people's time and energy doing
         # test runs that don't give the results they want.
         parser.error("sorry, coverage options do not work when --with-hg "
                      "or --local specified")
 
     global vlog
     if options.verbose:
         if options.jobs > 1 or options.child is not None:
             pid = "[%d]" % os.getpid()
         else:
             pid = None
         def vlog(*msg):
             if pid:
                 print pid,
             for m in msg:
                 print m,
             print
             sys.stdout.flush()
     else:
         vlog = lambda *msg: None
 
     if options.tmpdir:
         options.tmpdir = os.path.expanduser(options.tmpdir)
 
     if options.jobs < 1:
         parser.error('--jobs must be positive')
     if options.interactive and options.jobs > 1:
         print '(--interactive overrides --jobs)'
         options.jobs = 1
     if options.interactive and options.debug:
         parser.error("-i/--interactive and -d/--debug are incompatible")
     if options.debug:
         if options.timeout != defaults['timeout']:
             sys.stderr.write(
                 'warning: --timeout option ignored with --debug\n')
         options.timeout = 0
     if options.py3k_warnings:
         if sys.version_info[:2] < (2, 6) or sys.version_info[:2] >= (3, 0):
             parser.error('--py3k-warnings can only be used on Python 2.6+')
     if options.blacklist:
         blacklist = dict()
         for filename in options.blacklist:
             try:
                 path = os.path.expanduser(os.path.expandvars(filename))
                 f = open(path, "r")
             except IOError, err:
                 if err.errno != errno.ENOENT:
                     raise
                 print "warning: no such blacklist file: %s" % filename
                 continue
 
             for line in f.readlines():
                 line = line.strip()
                 if line and not line.startswith('#'):
                     blacklist[line] = filename
 
         options.blacklist = blacklist
 
     return (options, args)
 
 def rename(src, dst):
     """Like os.rename(), trade atomicity and opened files friendliness
     for existing destination support.
     """
     shutil.copy(src, dst)
     os.remove(src)
 
 def splitnewlines(text):
     '''like str.splitlines, but only split on newlines.
     keep line endings.'''
     i = 0
     lines = []
     while True:
         n = text.find('\n', i)
         if n == -1:
             last = text[i:]
             if last:
                 lines.append(last)
             return lines
         lines.append(text[i:n + 1])
         i = n + 1
 
 def parsehghaveoutput(lines):
     '''Parse hghave log lines.
     Return tuple of lists (missing, failed):
       * the missing/unknown features
       * the features for which existence check failed'''
     missing = []
     failed = []
     for line in lines:
         if line.startswith(SKIPPED_PREFIX):
             line = line.splitlines()[0]
             missing.append(line[len(SKIPPED_PREFIX):])
         elif line.startswith(FAILED_PREFIX):
             line = line.splitlines()[0]
             failed.append(line[len(FAILED_PREFIX):])
 
     return missing, failed
 
 def showdiff(expected, output, ref, err):
     for line in difflib.unified_diff(expected, output, ref, err):
         sys.stdout.write(line)
 
 def findprogram(program):
     """Search PATH for a executable program"""
     for p in os.environ.get('PATH', os.defpath).split(os.pathsep):
         name = os.path.join(p, program)
         if os.access(name, os.X_OK):
             return name
     return None
 
 def checktools():
     # Before we go any further, check for pre-requisite tools
     # stuff from coreutils (cat, rm, etc) are not tested
     for p in requiredtools:
         if os.name == 'nt':
             p += '.exe'
         found = findprogram(p)
         if found:
             vlog("# Found prerequisite", p, "at", found)
         else:
             print "WARNING: Did not find prerequisite tool: "+p
 
 def killdaemons():
     # Kill off any leftover daemon processes
     try:
         fp = open(DAEMON_PIDS)
         for line in fp:
             try:
                 pid = int(line)
             except ValueError:
                 continue
             try:
                 os.kill(pid, 0)
                 vlog('# Killing daemon process %d' % pid)
                 os.kill(pid, signal.SIGTERM)
                 time.sleep(0.25)
                 os.kill(pid, 0)
                 vlog('# Daemon process %d is stuck - really killing it' % pid)
                 os.kill(pid, signal.SIGKILL)
             except OSError, err:
                 if err.errno != errno.ESRCH:
                     raise
         fp.close()
         os.unlink(DAEMON_PIDS)
     except IOError:
         pass
 
 def cleanup(options):
     if not options.keep_tmpdir:
         vlog("# Cleaning up HGTMP", HGTMP)
         shutil.rmtree(HGTMP, True)
 
 def usecorrectpython():
     # some tests run python interpreter. they must use same
     # interpreter we use or bad things will happen.
     exedir, exename = os.path.split(sys.executable)
     if exename == 'python':
         path = findprogram('python')
         if os.path.dirname(path) == exedir:
             return
     vlog('# Making python executable in test path use correct Python')
     mypython = os.path.join(BINDIR, 'python')
     try:
         os.symlink(sys.executable, mypython)
     except AttributeError:
         # windows fallback
         shutil.copyfile(sys.executable, mypython)
         shutil.copymode(sys.executable, mypython)
 
 def installhg(options):
     vlog("# Performing temporary installation of HG")
     installerrs = os.path.join("tests", "install.err")
     pure = options.pure and "--pure" or ""
 
     # Run installer in hg root
     script = os.path.realpath(sys.argv[0])
     hgroot = os.path.dirname(os.path.dirname(script))
     os.chdir(hgroot)
     nohome = '--home=""'
     if os.name == 'nt':
         # The --home="" trick works only on OS where os.sep == '/'
         # because of a distutils convert_path() fast-path. Avoid it at
         # least on Windows for now, deal with .pydistutils.cfg bugs
         # when they happen.
         nohome = ''
     cmd = ('%s setup.py %s clean --all'
            ' install --force --prefix="%s" --install-lib="%s"'
            ' --install-scripts="%s" %s >%s 2>&1'
            % (sys.executable, pure, INST, PYTHONDIR, BINDIR, nohome,
               installerrs))
     vlog("# Running", cmd)
     if os.system(cmd) == 0:
         if not options.verbose:
             os.remove(installerrs)
     else:
         f = open(installerrs)
         for line in f:
             print line,
         f.close()
         sys.exit(1)
     os.chdir(TESTDIR)
 
     usecorrectpython()
 
     vlog("# Installing dummy diffstat")
     f = open(os.path.join(BINDIR, 'diffstat'), 'w')
     f.write('#!' + sys.executable + '\n'
             'import sys\n'
             'files = 0\n'
             'for line in sys.stdin:\n'
             '    if line.startswith("diff "):\n'
             '        files += 1\n'
             'sys.stdout.write("files patched: %d\\n" % files)\n')
     f.close()
     os.chmod(os.path.join(BINDIR, 'diffstat'), 0700)
 
     if options.py3k_warnings and not options.anycoverage:
         vlog("# Updating hg command to enable Py3k Warnings switch")
         f = open(os.path.join(BINDIR, 'hg'), 'r')
         lines = [line.rstrip() for line in f]
         lines[0] += ' -3'
         f.close()
         f = open(os.path.join(BINDIR, 'hg'), 'w')
         for line in lines:
             f.write(line + '\n')
         f.close()
 
     if options.anycoverage:
         vlog("# Installing coverage wrapper")
         os.environ['COVERAGE_FILE'] = COVERAGE_FILE
         if os.path.exists(COVERAGE_FILE):
             os.unlink(COVERAGE_FILE)
         # Create a wrapper script to invoke hg via coverage.py
         os.rename(os.path.join(BINDIR, "hg"), os.path.join(BINDIR, "_hg.py"))
         f = open(os.path.join(BINDIR, 'hg'), 'w')
         f.write('#!' + sys.executable + '\n')
         f.write('import sys, os; os.execv(sys.executable, [sys.executable, '
                 '"%s", "-x", "-p", "%s"] + sys.argv[1:])\n' %
                 (os.path.join(TESTDIR, 'coverage.py'),
                  os.path.join(BINDIR, '_hg.py')))
         f.close()
         os.chmod(os.path.join(BINDIR, 'hg'), 0700)
 
 def outputcoverage(options):
 
     vlog('# Producing coverage report')
     os.chdir(PYTHONDIR)
 
     def covrun(*args):
         start = sys.executable, os.path.join(TESTDIR, 'coverage.py')
         cmd = '"%s" "%s" %s' % (start[0], start[1], ' '.join(args))
         vlog('# Running: %s' % cmd)
         os.system(cmd)
 
     omit = [BINDIR, TESTDIR, PYTHONDIR]
     if not options.cover_stdlib:
         # Exclude as system paths (ignoring empty strings seen on win)
         omit += [x for x in sys.path if x != '']
     omit = ','.join(omit)
 
     covrun('-c') # combine from parallel processes
     for fn in os.listdir(TESTDIR):
         if fn.startswith('.coverage.'):
             os.unlink(os.path.join(TESTDIR, fn))
 
     covrun('-i', '-r', '"--omit=%s"' % omit) # report
     if options.annotate:
         adir = os.path.join(TESTDIR, 'annotated')
         if not os.path.isdir(adir):
             os.mkdir(adir)
         covrun('-i', '-a', '"--directory=%s"' % adir, '"--omit=%s"' % omit)
 
 class Timeout(Exception):
     pass
 
 def alarmed(signum, frame):
     raise Timeout
 
 def run(cmd, options):
     """Run command in a sub-process, capturing the output (stdout and stderr).
     Return a tuple (exitcode, output).  output is None in debug mode."""
     # TODO: Use subprocess.Popen if we're running on Python 2.4
     if options.debug:
         proc = subprocess.Popen(cmd, shell=True)
         ret = proc.wait()
         return (ret, None)
 
     if os.name == 'nt' or sys.platform.startswith('java'):
         tochild, fromchild = os.popen4(cmd)
         tochild.close()
         output = fromchild.read()
         ret = fromchild.close()
         if ret == None:
             ret = 0
     else:
         proc = Popen4(cmd)
         def cleanup():
             os.kill(proc.pid, signal.SIGTERM)
             ret = proc.wait()
             if ret == 0:
                 ret = signal.SIGTERM << 8
             killdaemons()
             return ret
 
         try:
             output = ''
             proc.tochild.close()
             output = proc.fromchild.read()
             ret = proc.wait()
             if os.WIFEXITED(ret):
                 ret = os.WEXITSTATUS(ret)
         except Timeout:
             vlog('# Process %d timed out - killing it' % proc.pid)
             ret = cleanup()
             output += ("\n### Abort: timeout after %d seconds.\n"
                        % options.timeout)
         except KeyboardInterrupt:
             vlog('# Handling keyboard interrupt')
             cleanup()
             raise
 
     return ret, splitnewlines(output)
 
 def runone(options, test, skips, fails):
     '''tristate output:
     None -> skipped
     True -> passed
     False -> failed'''
 
     def skip(msg):
         if not options.verbose:
             skips.append((test, msg))
         else:
             print "\nSkipping %s: %s" % (testpath, msg)
         return None
 
     def fail(msg):
         fails.append((test, msg))
         if not options.nodiff:
             print "\nERROR: %s %s" % (testpath, msg)
         return None
 
     vlog("# Test", test)
 
     # create a fresh hgrc
     hgrc = open(HGRCPATH, 'w+')
     hgrc.write('[ui]\n')
     hgrc.write('slash = True\n')
     hgrc.write('[defaults]\n')
     hgrc.write('backout = -d "0 0"\n')
     hgrc.write('commit = -d "0 0"\n')
     hgrc.write('tag = -d "0 0"\n')
     if options.inotify:
         hgrc.write('[extensions]\n')
         hgrc.write('inotify=\n')
         hgrc.write('[inotify]\n')
         hgrc.write('pidfile=%s\n' % DAEMON_PIDS)
         hgrc.write('appendpid=True\n')
     hgrc.close()
 
     testpath = os.path.join(TESTDIR, test)
     ref = os.path.join(TESTDIR, test+".out")
     err = os.path.join(TESTDIR, test+".err")
     if os.path.exists(err):
         os.remove(err)       # Remove any previous output files
     try:
         tf = open(testpath)
         firstline = tf.readline().rstrip()
         tf.close()
     except:
         firstline = ''
     lctest = test.lower()
 
     if lctest.endswith('.py') or firstline == '#!/usr/bin/env python':
         py3kswitch = options.py3k_warnings and ' -3' or ''
         cmd = '%s%s "%s"' % (PYTHON, py3kswitch, testpath)
     elif lctest.endswith('.bat'):
         # do not run batch scripts on non-windows
         if os.name != 'nt':
             return skip("batch script")
         # To reliably get the error code from batch files on WinXP,
         # the "cmd /c call" prefix is needed. Grrr
         cmd = 'cmd /c call "%s"' % testpath
     else:
         # do not run shell scripts on windows
         if os.name == 'nt':
             return skip("shell script")
         # do not try to run non-executable programs
         if not os.path.exists(testpath):
             return fail("does not exist")
         elif not os.access(testpath, os.X_OK):
             return skip("not executable")
         cmd = '"%s"' % testpath
 
     # Make a tmp subdirectory to work in
     tmpd = os.path.join(HGTMP, test)
     os.mkdir(tmpd)
     os.chdir(tmpd)
 
     if options.timeout > 0:
         signal.alarm(options.timeout)
 
     vlog("# Running", cmd)
     ret, out = run(cmd, options)
     vlog("# Ret was:", ret)
 
     if options.timeout > 0:
         signal.alarm(0)
 
     mark = '.'
 
     skipped = (ret == SKIPPED_STATUS)
     # If we're not in --debug mode and reference output file exists,
     # check test output against it.
     if options.debug:
         refout = None                   # to match out == None
     elif os.path.exists(ref):
         f = open(ref, "r")
         refout = splitnewlines(f.read())
         f.close()
     else:
         refout = []
 
     if skipped:
         mark = 's'
         if out is None:                 # debug mode: nothing to parse
             missing = ['unknown']
             failed = None
         else:
             missing, failed = parsehghaveoutput(out)
         if not missing:
             missing = ['irrelevant']
         if failed:
             fail("hghave failed checking for %s" % failed[-1])
             skipped = False
         else:
             skip(missing[-1])
     elif out != refout:
         mark = '!'
         if ret:
             fail("output changed and returned error code %d" % ret)
         else:
             fail("output changed")
         if not options.nodiff:
             showdiff(refout, out, ref, err)
         ret = 1
     elif ret:
         mark = '!'
         fail("returned error code %d" % ret)
 
     if not options.verbose:
         sys.stdout.write(mark)
         sys.stdout.flush()
 
     if ret != 0 and not skipped and not options.debug:
         # Save errors to a file for diagnosis
         f = open(err, "wb")
         for line in out:
             f.write(line)
         f.close()
 
     killdaemons()
 
     os.chdir(TESTDIR)
     if not options.keep_tmpdir:
         shutil.rmtree(tmpd, True)
     if skipped:
         return None
     return ret == 0
 
 _hgpath = None
 
 def _gethgpath():
     """Return the path to the mercurial package that is actually found by
     the current Python interpreter."""
     global _hgpath
     if _hgpath is not None:
         return _hgpath
 
     cmd = '%s -c "import mercurial; print mercurial.__path__[0]"'
     pipe = os.popen(cmd % PYTHON)
     try:
         _hgpath = pipe.read().strip()
     finally:
         pipe.close()
     return _hgpath
 
 def _checkhglib(verb):
     """Ensure that the 'mercurial' package imported by python is
     the one we expect it to be.  If not, print a warning to stderr."""
     expecthg = os.path.join(PYTHONDIR, 'mercurial')
     actualhg = _gethgpath()
     if actualhg != expecthg:
         sys.stderr.write('warning: %s with unexpected mercurial lib: %s\n'
                          '         (expected %s)\n'
                          % (verb, actualhg, expecthg))
 
 def runchildren(options, tests):
     if INST:
         installhg(options)
         _checkhglib("Testing")
 
     optcopy = dict(options.__dict__)
     optcopy['jobs'] = 1
     if optcopy['with_hg'] is None:
         optcopy['with_hg'] = os.path.join(BINDIR, "hg")
     opts = []
     for opt, value in optcopy.iteritems():
         name = '--' + opt.replace('_', '-')
         if value is True:
             opts.append(name)
         elif value is not None:
             opts.append(name + '=' + str(value))
 
     tests.reverse()
     jobs = [[] for j in xrange(options.jobs)]
     while tests:
         for job in jobs:
             if not tests:
                 break
             job.append(tests.pop())
     fps = {}
 
     for j, job in enumerate(jobs):
         if not job:
             continue
         rfd, wfd = os.pipe()
         childopts = ['--child=%d' % wfd, '--port=%d' % (options.port + j * 3)]
         childtmp = os.path.join(HGTMP, 'child%d' % j)
         childopts += ['--tmpdir', childtmp]
         cmdline = [PYTHON, sys.argv[0]] + opts + childopts + job
         vlog(' '.join(cmdline))
         fps[os.spawnvp(os.P_NOWAIT, cmdline[0], cmdline)] = os.fdopen(rfd, 'r')
         os.close(wfd)
     signal.signal(signal.SIGINT, signal.SIG_IGN)
     failures = 0
     tested, skipped, failed = 0, 0, 0
     skips = []
     fails = []
     while fps:
         pid, status = os.wait()
         fp = fps.pop(pid)
         l = fp.read().splitlines()
         try:
             test, skip, fail = map(int, l[:3])
         except ValueError:
             test, skip, fail = 0, 0, 0
         split = -fail or len(l)
         for s in l[3:split]:
             skips.append(s.split(" ", 1))
         for s in l[split:]:
             fails.append(s.split(" ", 1))
         tested += test
         skipped += skip
         failed += fail
         vlog('pid %d exited, status %d' % (pid, status))
         failures |= status
     print
     if not options.noskips:
         for s in skips:
             print "Skipped %s: %s" % (s[0], s[1])
     for s in fails:
         print "Failed %s: %s" % (s[0], s[1])
 
     _checkhglib("Tested")
     print "# Ran %d tests, %d skipped, %d failed." % (
         tested, skipped, failed)
     sys.exit(failures != 0)
 
 def runtests(options, tests):
     global DAEMON_PIDS, HGRCPATH
     DAEMON_PIDS = os.environ["DAEMON_PIDS"] = os.path.join(HGTMP, 'daemon.pids')
     HGRCPATH = os.environ["HGRCPATH"] = os.path.join(HGTMP, '.hgrc')
 
     try:
         if INST:
             installhg(options)
             _checkhglib("Testing")
 
         if options.timeout > 0:
             try:
                 signal.signal(signal.SIGALRM, alarmed)
                 vlog('# Running each test with %d second timeout' %
                      options.timeout)
             except AttributeError:
                 print 'WARNING: cannot run tests with timeouts'
                 options.timeout = 0
 
         tested = 0
         failed = 0
         skipped = 0
 
         if options.restart:
             orig = list(tests)
             while tests:
                 if os.path.exists(tests[0] + ".err"):
                     break
                 tests.pop(0)
             if not tests:
                 print "running all tests"
                 tests = orig
 
         skips = []
         fails = []
 
         for test in tests:
             if options.blacklist:
                 filename = options.blacklist.get(test)
                 if filename is not None:
                     skips.append((test, "blacklisted (%s)" % filename))
                     skipped += 1
                     continue
 
             if options.retest and not os.path.exists(test + ".err"):
                 skipped += 1
                 continue
 
             if options.keywords:
                 t = open(test).read().lower() + test.lower()
                 for k in options.keywords.lower().split():
                     if k in t:
                         break
                 else:
-                    skipped +=1
+                    skipped += 1
                     continue
 
             ret = runone(options, test, skips, fails)
             if ret is None:
                 skipped += 1
             elif not ret:
                 if options.interactive:
                     print "Accept this change? [n] ",
                     answer = sys.stdin.readline().strip()
                     if answer.lower() in "y yes".split():
                         rename(test + ".err", test + ".out")
                         tested += 1
                         fails.pop()
                         continue
                 failed += 1
                 if options.first:
                     break
             tested += 1
 
         if options.child:
             fp = os.fdopen(options.child, 'w')
             fp.write('%d\n%d\n%d\n' % (tested, skipped, failed))
             for s in skips:
                 fp.write("%s %s\n" % s)
             for s in fails:
                 fp.write("%s %s\n" % s)
             fp.close()
         else:
             print
             for s in skips:
                 print "Skipped %s: %s" % s
             for s in fails:
                 print "Failed %s: %s" % s
             _checkhglib("Tested")
             print "# Ran %d tests, %d skipped, %d failed." % (
                 tested, skipped, failed)
 
         if options.anycoverage:
             outputcoverage(options)
     except KeyboardInterrupt:
         failed = True
         print "\ninterrupted!"
 
     if failed:
         sys.exit(1)
 
 def main():
     (options, args) = parseargs()
     if not options.child:
         os.umask(022)
 
         checktools()
 
     # Reset some environment variables to well-known values so that
     # the tests produce repeatable output.
     os.environ['LANG'] = os.environ['LC_ALL'] = os.environ['LANGUAGE'] = 'C'
     os.environ['TZ'] = 'GMT'
     os.environ["EMAIL"] = "Foo Bar <[e-mail]>"
     os.environ['CDPATH'] = ''
     os.environ['COLUMNS'] = '80'
     os.environ['http_proxy'] = ''
 
     global TESTDIR, HGTMP, INST, BINDIR, PYTHONDIR, COVERAGE_FILE
     TESTDIR = os.environ["TESTDIR"] = os.getcwd()
     if options.tmpdir:
         options.keep_tmpdir = True
         tmpdir = options.tmpdir
         if os.path.exists(tmpdir):
             # Meaning of tmpdir has changed since 1.3: we used to create
             # HGTMP inside tmpdir; now HGTMP is tmpdir.  So fail if
             # tmpdir already exists.
             sys.exit("error: temp dir %r already exists" % tmpdir)
 
             # Automatically removing tmpdir sounds convenient, but could
             # really annoy anyone in the habit of using "--tmpdir=/tmp"
             # or "--tmpdir=$HOME".
             #vlog("# Removing temp dir", tmpdir)
             #shutil.rmtree(tmpdir)
         os.makedirs(tmpdir)
     else:
         tmpdir = tempfile.mkdtemp('', 'hgtests.')
     HGTMP = os.environ['HGTMP'] = os.path.realpath(tmpdir)
     DAEMON_PIDS = None
     HGRCPATH = None
 
     os.environ["HGEDITOR"] = sys.executable + ' -c "import sys; sys.exit(0)"'
     os.environ["HGMERGE"] = "internal:merge"
     os.environ["HGUSER"]   = "test"
     os.environ["HGENCODING"] = "ascii"
     os.environ["HGENCODINGMODE"] = "strict"
     os.environ["HGPORT"] = str(options.port)
     os.environ["HGPORT1"] = str(options.port + 1)
     os.environ["HGPORT2"] = str(options.port + 2)
 
     if options.with_hg:
         INST = None
         BINDIR = os.path.dirname(os.path.realpath(options.with_hg))
 
         # This looks redundant with how Python initializes sys.path from
         # the location of the script being executed.  Needed because the
         # "hg" specified by --with-hg is not the only Python script
         # executed in the test suite that needs to import 'mercurial'
         # ... which means it's not really redundant at all.
         PYTHONDIR = BINDIR
     else:
         INST = os.path.join(HGTMP, "install")
         BINDIR = os.environ["BINDIR"] = os.path.join(INST, "bin")
         PYTHONDIR = os.path.join(INST, "lib", "python")
 
     os.environ["BINDIR"] = BINDIR
     os.environ["PYTHON"] = PYTHON
 
     if not options.child:
         path = [BINDIR] + os.environ["PATH"].split(os.pathsep)
         os.environ["PATH"] = os.pathsep.join(path)
 
         # Include TESTDIR in PYTHONPATH so that out-of-tree extensions
         # can run .../tests/run-tests.py test-foo where test-foo
         # adds an extension to HGRC
         pypath = [PYTHONDIR, TESTDIR]
         # We have to augment PYTHONPATH, rather than simply replacing
         # it, in case external libraries are only available via current
         # PYTHONPATH.  (In particular, the Subversion bindings on OS X
         # are in /opt/subversion.)
         oldpypath = os.environ.get('PYTHONPATH')
         if oldpypath:
             pypath.append(oldpypath)
         os.environ['PYTHONPATH'] = os.pathsep.join(pypath)
 
     COVERAGE_FILE = os.path.join(TESTDIR, ".coverage")
 
     if len(args) == 0:
         args = os.listdir(".")
         args.sort()
 
     tests = []
     for test in args:
         if (test.startswith("test-") and '~' not in test and
             ('.' not in test or test.endswith('.py') or
              test.endswith('.bat'))):
             tests.append(test)
     if not tests:
         print "# Ran 0 tests, 0 skipped, 0 failed."
         return
 
     vlog("# Using TESTDIR", TESTDIR)
     vlog("# Using HGTMP", HGTMP)
     vlog("# Using PATH", os.environ["PATH"])
     vlog("# Using PYTHONPATH", os.environ["PYTHONPATH"])
 
     try:
         if len(tests) > 1 and options.jobs > 1:
             runchildren(options, tests)
         else:
             runtests(options, tests)
     finally:
         time.sleep(1)
         cleanup(options)
 
 main()

tests/test-doctest.py

@@ -1,19 +1,19 b''
 # this is hack to make sure no escape characters are inserted into the output
-import os;
+import os
 if 'TERM' in os.environ:
     del os.environ['TERM']
 import doctest
 
 import mercurial.changelog
 # test doctest from changelog
 
 doctest.testmod(mercurial.changelog)
 
 import mercurial.httprepo
 doctest.testmod(mercurial.httprepo)
 
 import mercurial.util
 doctest.testmod(mercurial.util)
 
 import hgext.convert.cvsps
 doctest.testmod(hgext.convert.cvsps)

tests/test-mq-header-from

@@ -1,151 +1,151 b''
 #!/bin/sh
 
 echo "[extensions]" >> $HGRCPATH
 echo "mq=" >> $HGRCPATH
 echo "[diff]" >> $HGRCPATH
 echo "nodates=true" >> $HGRCPATH
 
 
 catlog() {
     cat .hg/patches/$1.patch | sed -e "s/^diff \-r [0-9a-f]* /diff -r ... /" \
                                    -e "s/^\(# Parent \).*/\1/"
     hg log --template "{rev}: {desc} - {author}\n"
 }
 
 runtest() {
     echo ==== init
     hg init a
     cd a
     hg qinit
 
 
     echo ==== qnew -U
     hg qnew -U 1.patch
     catlog 1
 
     echo ==== qref
     echo "1" >1
     hg add
     hg qref
     catlog 1
 
     echo ==== qref -u
     hg qref -u mary
     catlog 1
 
     echo ==== qnew
     hg qnew 2.patch
     echo "2" >2
     hg add
     hg qref
     catlog 2
 
     echo ==== qref -u
     hg qref -u jane
     catlog 2
 
 
     echo ==== qnew -U -m
     hg qnew -U -m "Three" 3.patch
     catlog 3
 
     echo ==== qref
     echo "3" >3
     hg add
     hg qref
     catlog 3
 
     echo ==== qref -m
     hg qref -m "Drei"
     catlog 3
 
     echo ==== qref -u
     hg qref -u mary
     catlog 3
 
     echo ==== qref -u -m
     hg qref -u maria -m "Three (again)"
     catlog 3
 
     echo ==== qnew -m
     hg qnew -m "Four" 4.patch
     echo "4" >4of t
     hg add
     hg qref
     catlog 4
 
     echo ==== qref -u
     hg qref -u jane
     catlog 4
 
 
     echo ==== qnew with HG header
     hg qnew --config 'mq.plain=true' 5.patch
     hg qpop
     echo "# HG changeset patch" >>.hg/patches/5.patch
     echo "# User johndoe" >>.hg/patches/5.patch
     hg qpush 2>&1 | grep 'now at'
     catlog 5
 
     echo ==== hg qref
     echo "5" >5
     hg add
     hg qref
     catlog 5
 
     echo ==== hg qref -U
     hg qref -U
     catlog 5
 
     echo ==== hg qref -u
     hg qref -u johndeere
     catlog 5
 
 
     echo ==== qnew with plain header
     hg qnew --config 'mq.plain=true' -U 6.patch
     hg qpop
     hg qpush 2>&1 | grep 'now at'
     catlog 6
 
     echo ==== hg qref
     echo "6" >6
     hg add
     hg qref
     catlog 6
 
     echo ==== hg qref -U
     hg qref -U
     catlog 6
 
     echo ==== hg qref -u
     hg qref -u johndeere
     catlog 6
 
 
     echo ==== "qpop -a / qpush -a"
     hg qpop -a
     hg qpush -a
     hg log --template "{rev}: {desc} - {author}\n"
 }
 
 
 echo ======= plain headers
 
 echo "[mq]" >> $HGRCPATH
 echo "plain=true" >> $HGRCPATH
 
 mkdir sandbox
 (cd sandbox ; runtest)
 rm -r sandbox
 
 
 echo ======= hg headers
 
 echo "plain=false" >> $HGRCPATH
 
 mkdir sandbox
 (cd sandbox ; runtest)
 rm -r sandbox
 
-runtest
  No newline at end of file
+runtest

tests/test-simplemerge.py

@@ -1,416 +1,416 b''
 # Copyright (C) 2004, 2005 Canonical Ltd
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 2 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 import unittest
 from unittest import TestCase
 from mercurial import util, simplemerge
 
 # bzr compatible interface, for the tests
 class Merge3(simplemerge.Merge3Text):
     """3-way merge of texts.
 
     Given BASE, OTHER, THIS, tries to produce a combined text
     incorporating the changes from both BASE->OTHER and BASE->THIS.
     All three will typically be sequences of lines."""
     def __init__(self, base, a, b):
         basetext = '\n'.join([i.strip('\n') for i in base] + [''])
         atext = '\n'.join([i.strip('\n') for i in a] + [''])
         btext = '\n'.join([i.strip('\n') for i in b] + [''])
         if util.binary(basetext) or util.binary(atext) or util.binary(btext):
             raise util.Abort("don't know how to merge binary files")
         simplemerge.Merge3Text.__init__(self, basetext, atext, btext,
                                         base, a, b)
 
 CantReprocessAndShowBase = simplemerge.CantReprocessAndShowBase
 
 def split_lines(t):
     from cStringIO import StringIO
     return StringIO(t).readlines()
 
 ############################################################
 # test case data from the gnu diffutils manual
 # common base
 TZU = split_lines("""     The Nameless is the origin of Heaven and Earth;
      The named is the mother of all things.
 
      Therefore let there always be non-being,
        so we may see their subtlety,
      And let there always be being,
        so we may see their outcome.
      The two are the same,
      But after they are produced,
        they have different names.
      They both may be called deep and profound.
      Deeper and more profound,
      The door of all subtleties!
 """)
 
 LAO = split_lines("""     The Way that can be told of is not the eternal Way;
      The name that can be named is not the eternal name.
      The Nameless is the origin of Heaven and Earth;
      The Named is the mother of all things.
      Therefore let there always be non-being,
        so we may see their subtlety,
      And let there always be being,
        so we may see their outcome.
      The two are the same,
      But after they are produced,
        they have different names.
 """)
 
 
 TAO = split_lines("""     The Way that can be told of is not the eternal Way;
      The name that can be named is not the eternal name.
      The Nameless is the origin of Heaven and Earth;
      The named is the mother of all things.
 
      Therefore let there always be non-being,
        so we may see their subtlety,
      And let there always be being,
        so we may see their result.
      The two are the same,
      But after they are produced,
        they have different names.
 
        -- The Way of Lao-Tzu, tr. Wing-tsit Chan
 
 """)
 
 MERGED_RESULT = split_lines("""\
      The Way that can be told of is not the eternal Way;
      The name that can be named is not the eternal name.
      The Nameless is the origin of Heaven and Earth;
      The Named is the mother of all things.
      Therefore let there always be non-being,
        so we may see their subtlety,
      And let there always be being,
        so we may see their result.
      The two are the same,
      But after they are produced,
        they have different names.
 <<<<<<< LAO
 =======
 
        -- The Way of Lao-Tzu, tr. Wing-tsit Chan
 
 >>>>>>> TAO
 """)
 
 class TestMerge3(TestCase):
     def log(self, msg):
         pass
 
     def test_no_changes(self):
         """No conflicts because nothing changed"""
         m3 = Merge3(['aaa', 'bbb'],
                     ['aaa', 'bbb'],
                     ['aaa', 'bbb'])
 
         self.assertEquals(m3.find_unconflicted(),
                           [(0, 2)])
 
         self.assertEquals(list(m3.find_sync_regions()),
                           [(0, 2,
                             0, 2,
                             0, 2),
                            (2, 2,  2, 2,  2, 2)])
 
         self.assertEquals(list(m3.merge_regions()),
                           [('unchanged', 0, 2)])
 
         self.assertEquals(list(m3.merge_groups()),
                           [('unchanged', ['aaa', 'bbb'])])
 
     def test_front_insert(self):
         m3 = Merge3(['zz'],
                     ['aaa', 'bbb', 'zz'],
                     ['zz'])
 
         # todo: should use a sentinal at end as from get_matching_blocks
         # to match without zz
         self.assertEquals(list(m3.find_sync_regions()),
                           [(0, 1,  2, 3,  0, 1),
-                           (1, 1,  3, 3,  1, 1),])
+                           (1, 1,  3, 3,  1, 1)])
 
         self.assertEquals(list(m3.merge_regions()),
                           [('a', 0, 2),
                            ('unchanged', 0, 1)])
 
         self.assertEquals(list(m3.merge_groups()),
                           [('a', ['aaa', 'bbb']),
                            ('unchanged', ['zz'])])
 
     def test_null_insert(self):
         m3 = Merge3([],
                     ['aaa', 'bbb'],
                     [])
         # todo: should use a sentinal at end as from get_matching_blocks
         # to match without zz
         self.assertEquals(list(m3.find_sync_regions()),
                           [(0, 0,  2, 2,  0, 0)])
 
         self.assertEquals(list(m3.merge_regions()),
                           [('a', 0, 2)])
 
         self.assertEquals(list(m3.merge_lines()),
                           ['aaa', 'bbb'])
 
     def test_no_conflicts(self):
         """No conflicts because only one side changed"""
         m3 = Merge3(['aaa', 'bbb'],
                     ['aaa', '111', 'bbb'],
                     ['aaa', 'bbb'])
 
         self.assertEquals(m3.find_unconflicted(),
                           [(0, 1), (1, 2)])
 
         self.assertEquals(list(m3.find_sync_regions()),
                           [(0, 1,  0, 1,  0, 1),
                            (1, 2,  2, 3,  1, 2),
-                           (2, 2,  3, 3,  2, 2),])
+                           (2, 2,  3, 3,  2, 2)])
 
         self.assertEquals(list(m3.merge_regions()),
                           [('unchanged', 0, 1),
                            ('a', 1, 2),
-                           ('unchanged', 1, 2),])
+                           ('unchanged', 1, 2)])
 
     def test_append_a(self):
         m3 = Merge3(['aaa\n', 'bbb\n'],
                     ['aaa\n', 'bbb\n', '222\n'],
                     ['aaa\n', 'bbb\n'])
 
         self.assertEquals(''.join(m3.merge_lines()),
                           'aaa\nbbb\n222\n')
 
     def test_append_b(self):
         m3 = Merge3(['aaa\n', 'bbb\n'],
                     ['aaa\n', 'bbb\n'],
                     ['aaa\n', 'bbb\n', '222\n'])
 
         self.assertEquals(''.join(m3.merge_lines()),
                           'aaa\nbbb\n222\n')
 
     def test_append_agreement(self):
         m3 = Merge3(['aaa\n', 'bbb\n'],
                     ['aaa\n', 'bbb\n', '222\n'],
                     ['aaa\n', 'bbb\n', '222\n'])
 
         self.assertEquals(''.join(m3.merge_lines()),
                           'aaa\nbbb\n222\n')
 
     def test_append_clash(self):
         m3 = Merge3(['aaa\n', 'bbb\n'],
                     ['aaa\n', 'bbb\n', '222\n'],
                     ['aaa\n', 'bbb\n', '333\n'])
 
         ml = m3.merge_lines(name_a='a',
                             name_b='b',
                             start_marker='<<',
                             mid_marker='--',
                             end_marker='>>')
         self.assertEquals(''.join(ml),
                           'aaa\n'
                           'bbb\n'
                           '<< a\n'
                           '222\n'
                           '--\n'
                           '333\n'
                           '>> b\n'
                          )
 
     def test_insert_agreement(self):
         m3 = Merge3(['aaa\n', 'bbb\n'],
                     ['aaa\n', '222\n', 'bbb\n'],
                     ['aaa\n', '222\n', 'bbb\n'])
 
         ml = m3.merge_lines(name_a='a',
                             name_b='b',
                             start_marker='<<',
                             mid_marker='--',
                             end_marker='>>')
         self.assertEquals(''.join(ml), 'aaa\n222\nbbb\n')
 
 
     def test_insert_clash(self):
         """Both try to insert lines in the same place."""
         m3 = Merge3(['aaa\n', 'bbb\n'],
                     ['aaa\n', '111\n', 'bbb\n'],
                     ['aaa\n', '222\n', 'bbb\n'])
 
         self.assertEquals(m3.find_unconflicted(),
                           [(0, 1), (1, 2)])
 
         self.assertEquals(list(m3.find_sync_regions()),
                           [(0, 1,  0, 1,  0, 1),
                            (1, 2,  2, 3,  2, 3),
-                           (2, 2,  3, 3,  3, 3),])
+                           (2, 2,  3, 3,  3, 3)])
 
         self.assertEquals(list(m3.merge_regions()),
                           [('unchanged', 0, 1),
                            ('conflict', 1, 1,  1, 2,  1, 2),
                            ('unchanged', 1, 2)])
 
         self.assertEquals(list(m3.merge_groups()),
                           [('unchanged', ['aaa\n']),
                            ('conflict', [], ['111\n'], ['222\n']),
                            ('unchanged', ['bbb\n']),
                            ])
 
         ml = m3.merge_lines(name_a='a',
                             name_b='b',
                             start_marker='<<',
                             mid_marker='--',
                             end_marker='>>')
         self.assertEquals(''.join(ml),
 '''aaa
 << a
 111
 --
 222
 >> b
 bbb
 ''')
 
     def test_replace_clash(self):
         """Both try to insert lines in the same place."""
         m3 = Merge3(['aaa', '000', 'bbb'],
                     ['aaa', '111', 'bbb'],
                     ['aaa', '222', 'bbb'])
 
         self.assertEquals(m3.find_unconflicted(),
                           [(0, 1), (2, 3)])
 
         self.assertEquals(list(m3.find_sync_regions()),
                           [(0, 1,  0, 1,  0, 1),
                            (2, 3,  2, 3,  2, 3),
-                           (3, 3,  3, 3,  3, 3),])
+                           (3, 3,  3, 3,  3, 3)])
 
     def test_replace_multi(self):
         """Replacement with regions of different size."""
         m3 = Merge3(['aaa', '000', '000', 'bbb'],
                     ['aaa', '111', '111', '111', 'bbb'],
                     ['aaa', '222', '222', '222', '222', 'bbb'])
 
         self.assertEquals(m3.find_unconflicted(),
                           [(0, 1), (3, 4)])
 
 
         self.assertEquals(list(m3.find_sync_regions()),
                           [(0, 1,  0, 1,  0, 1),
                            (3, 4,  4, 5,  5, 6),
                            (4, 4,  5, 5,  6, 6)])
 
     def test_merge_poem(self):
         """Test case from diff3 manual"""
         m3 = Merge3(TZU, LAO, TAO)
         ml = list(m3.merge_lines('LAO', 'TAO'))
         self.log('merge result:')
         self.log(''.join(ml))
         self.assertEquals(ml, MERGED_RESULT)
 
     def test_minimal_conflicts_common(self):
         """Reprocessing"""
         base_text = ("a\n" * 20).splitlines(True)
         this_text = ("a\n"*10+"b\n" * 10).splitlines(True)
         other_text = ("a\n"*10+"c\n"+"b\n" * 8 + "c\n").splitlines(True)
         m3 = Merge3(base_text, other_text, this_text)
         m_lines = m3.merge_lines('OTHER', 'THIS', reprocess=True)
         merged_text = "".join(list(m_lines))
         optimal_text = ("a\n" * 10 + "<<<<<<< OTHER\nc\n=======\n"
             + ">>>>>>> THIS\n"
             + 8* "b\n" + "<<<<<<< OTHER\nc\n=======\n"
             + 2* "b\n" + ">>>>>>> THIS\n")
         self.assertEquals(optimal_text, merged_text)
 
     def test_minimal_conflicts_unique(self):
         def add_newline(s):
             """Add a newline to each entry in the string"""
             return [(x+'\n') for x in s]
 
         base_text = add_newline("abcdefghijklm")
         this_text = add_newline("abcdefghijklmNOPQRSTUVWXYZ")
         other_text = add_newline("abcdefghijklm1OPQRSTUVWXY2")
         m3 = Merge3(base_text, other_text, this_text)
         m_lines = m3.merge_lines('OTHER', 'THIS', reprocess=True)
         merged_text = "".join(list(m_lines))
         optimal_text = ''.join(add_newline("abcdefghijklm")
             + ["<<<<<<< OTHER\n1\n=======\nN\n>>>>>>> THIS\n"]
             + add_newline('OPQRSTUVWXY')
             + ["<<<<<<< OTHER\n2\n=======\nZ\n>>>>>>> THIS\n"]
             )
         self.assertEquals(optimal_text, merged_text)
 
     def test_minimal_conflicts_nonunique(self):
         def add_newline(s):
             """Add a newline to each entry in the string"""
             return [(x+'\n') for x in s]
 
         base_text = add_newline("abacddefgghij")
         this_text = add_newline("abacddefgghijkalmontfprz")
         other_text = add_newline("abacddefgghijknlmontfprd")
         m3 = Merge3(base_text, other_text, this_text)
         m_lines = m3.merge_lines('OTHER', 'THIS', reprocess=True)
         merged_text = "".join(list(m_lines))
         optimal_text = ''.join(add_newline("abacddefgghijk")
             + ["<<<<<<< OTHER\nn\n=======\na\n>>>>>>> THIS\n"]
             + add_newline('lmontfpr')
             + ["<<<<<<< OTHER\nd\n=======\nz\n>>>>>>> THIS\n"]
             )
         self.assertEquals(optimal_text, merged_text)
 
     def test_reprocess_and_base(self):
         """Reprocessing and showing base breaks correctly"""
         base_text = ("a\n" * 20).splitlines(True)
         this_text = ("a\n"*10+"b\n" * 10).splitlines(True)
         other_text = ("a\n"*10+"c\n"+"b\n" * 8 + "c\n").splitlines(True)
         m3 = Merge3(base_text, other_text, this_text)
         m_lines = m3.merge_lines('OTHER', 'THIS', reprocess=True,
                                  base_marker='|||||||')
         self.assertRaises(CantReprocessAndShowBase, list, m_lines)
 
     def test_binary(self):
         self.assertRaises(util.Abort, Merge3, ['\x00'], ['a'], ['b'])
 
     def test_dos_text(self):
         base_text = 'a\r\n'
         this_text = 'b\r\n'
         other_text = 'c\r\n'
         m3 = Merge3(base_text.splitlines(True), other_text.splitlines(True),
                     this_text.splitlines(True))
         m_lines = m3.merge_lines('OTHER', 'THIS')
         self.assertEqual('<<<<<<< OTHER\r\nc\r\n=======\r\nb\r\n'
             '>>>>>>> THIS\r\n'.splitlines(True), list(m_lines))
 
     def test_mac_text(self):
         base_text = 'a\r'
         this_text = 'b\r'
         other_text = 'c\r'
         m3 = Merge3(base_text.splitlines(True), other_text.splitlines(True),
                     this_text.splitlines(True))
         m_lines = m3.merge_lines('OTHER', 'THIS')
         self.assertEqual('<<<<<<< OTHER\rc\r=======\rb\r'
             '>>>>>>> THIS\r'.splitlines(True), list(m_lines))
 
 if __name__ == '__main__':
     # hide the timer
     import time
     orig = time.time
     try:
         time.time = lambda: 0
         unittest.main()
     finally:
         time.time = orig
 

tests/test-subrepo

@@ -1,186 +1,186 b''
 #!/bin/sh
 
 rm -rf sub
 mkdir sub
 cd sub
 hg init t
 cd t
 
 echo % first revision, no sub
 echo a > a
 hg ci -Am0
 
 echo % add first sub
 echo s = s > .hgsub
 hg add .hgsub
 hg init s
 echo a > s/a
 hg -R s ci -Ams0
 hg ci -m1
 
 echo % add sub sub
 echo ss = ss > s/.hgsub
 hg init s/ss
 echo a > s/ss/a
 hg -R s add s/.hgsub
 hg -R s/ss add s/ss/a
 hg ci -m2
 
 echo % bump sub rev
 echo b > s/a
 hg -R s ci -ms1
 hg ci -m3
 
 echo % leave sub dirty
 echo c > s/a
 hg ci -m4
 hg tip -R s
 
 echo % check caching
 hg co 0
 hg debugsub
 echo % restore
 hg co
 hg debugsub
 
 echo % new branch for merge tests
 hg co 1
 echo t = t >> .hgsub
 hg init t
 echo t > t/t
 hg -R t add t
 echo % 5
 hg ci -m5 # add sub
 echo t2 > t/t
 echo % 6
 hg st -R s
 hg ci -m6 # change sub
 hg debugsub
 echo t3 > t/t
 echo % 7
 hg ci -m7 # change sub again for conflict test
 hg rm .hgsub
 echo % 8
 hg ci -m8 # remove sub
 
 echo % merge tests
 hg co -C 3
 hg merge 5 # test adding
 hg debugsub
 hg ci -m9
 hg merge 6 --debug # test change
 hg debugsub
 echo conflict > t/t
 hg ci -m10
 HGMERGE=internal:merge hg merge --debug 7 # test conflict
 echo % should conflict
 cat t/t
 
 echo % clone
 cd ..
 hg clone t tc
 cd tc
 hg debugsub
 
 echo % push
 echo bah > t/t
 hg ci -m11
 hg push | sed 's/ .*sub/ ...sub/g'
 
 echo % push -f
 echo bah > s/a
 hg ci -m12
 hg push | sed 's/ .*sub/ ...sub/g'
 hg push -f | sed 's/ .*sub/ ...sub/g'
 
 echo % update
 cd ../t
 hg up -C # discard our earlier merge
 echo blah > t/t
 hg ci -m13
 
 echo % pull
 cd ../tc
 hg pull | sed 's/ .*sub/ ...sub/g'
 hg up # should pull t
 cat t/t
 
 echo % bogus subrepo path aborts
 echo 'bogus=[boguspath' >> .hgsub
 hg ci -m 'bogus subrepo path'
 
 echo % issue 1986
 cd ..
 rm -rf sub
 hg init main
 cd main
 
 hg init s           # subrepo layout
 cd s                #
 echo a > a          #   o   5 br
 hg ci -Am1          #  /|
 hg branch br        # o |   4 default
 echo a >> a         # | |
 hg ci -m1           # | o   3 br
 hg up default       # |/|
 echo b > b          # o |   2 default
 hg ci -Am1          # | |
 hg up br            # | o   1 br
 hg merge tip        # |/
 hg ci -m1           # o     0 default
 hg up 2
 echo c > c
 hg ci -Am1
 hg up 3
 hg merge 4
 hg ci -m1
 
 cd ..                         # main repo layout:
 echo 's = s' > .hgsub         #
 hg -R s up 2                  #   * <-- try to merge default into br again
 hg ci -Am1                    # .`|
 hg branch br                  # . o   5 br      --> substate = 5
 echo b > b                    # . |
 hg -R s up 3                  # o |   4 default --> substate = 4
 hg ci -Am1                    # | |
 hg up default                 # | o   3 br      --> substate = 2
 echo c > c                    # |/|
 hg ci -Am1                    # o |   2 default --> substate = 2
 hg up 1                       # | |     
 hg merge 2                    # | o   1 br      --> substate = 3
 hg ci -m1                     # |/    
 hg up 2                       # o     0 default --> substate = 2
 hg -R s up 4
 echo d > d
 hg ci -Am1
 hg up 3
 hg -R s up 5
 echo e > e
 hg ci -Am1
 
 hg up 5
 hg merge 4    # try to merge default into br again
 cd ..
 
 echo % test repository cloning
 mkdir mercurial mercurial2
 hg init nested_absolute
 echo test > nested_absolute/foo
 hg -R nested_absolute add
 hg -R nested_absolute ci -mtest
 cd mercurial
 hg init nested_relative
 echo test2 > nested_relative/foo2
 hg -R nested_relative add
 hg -R nested_relative ci -mtest2
 hg init main
 echo nested_relative = ../nested_relative > main/.hgsub
-echo nested_absolute = $PWD/nested_absolute >> main/.hgsub
+echo nested_absolute = `pwd`/nested_absolute >> main/.hgsub
 hg -R main add
 hg -R main ci -m "add subrepos"
 cd ..
 hg clone mercurial/main mercurial2/main
 cat mercurial2/main/nested_absolute/.hg/hgrc mercurial2/main/nested_relative/.hg/hgrc | sed "s:${PWD}:/tmp:"
 rm -rf mercurial mercurial2
 
 exit 0