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# record.py
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#
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# Copyright 2007 Bryan O'Sullivan <bos@serpentine.com>
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#
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# This software may be used and distributed according to the terms of
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# the GNU General Public License, incorporated herein by reference.
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'''interactive change selection during commit'''
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from mercurial.i18n import _
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from mercurial import cmdutil, commands, cmdutil, hg, mdiff, patch, revlog
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from mercurial import util
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import copy, cStringIO, errno, operator, os, re, shutil, tempfile
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lines_re = re.compile(r'@@ -(\d+),(\d+) \+(\d+),(\d+) @@\s*(.*)')
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def scanpatch(fp):
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lr = patch.linereader(fp)
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def scanwhile(first, p):
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lines = [first]
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while True:
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line = lr.readline()
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if not line:
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break
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if p(line):
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lines.append(line)
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else:
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lr.push(line)
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break
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return lines
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while True:
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line = lr.readline()
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if not line:
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break
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if line.startswith('diff --git a/'):
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def notheader(line):
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s = line.split(None, 1)
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return not s or s[0] not in ('---', 'diff')
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header = scanwhile(line, notheader)
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fromfile = lr.readline()
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if fromfile.startswith('---'):
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tofile = lr.readline()
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header += [fromfile, tofile]
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else:
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lr.push(fromfile)
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yield 'file', header
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elif line[0] == ' ':
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yield 'context', scanwhile(line, lambda l: l[0] in ' \\')
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elif line[0] in '-+':
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yield 'hunk', scanwhile(line, lambda l: l[0] in '-+\\')
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else:
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m = lines_re.match(line)
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if m:
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yield 'range', m.groups()
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else:
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raise patch.PatchError('unknown patch content: %r' % line)
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class header(object):
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diff_re = re.compile('diff --git a/(.*) b/(.*)$')
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allhunks_re = re.compile('(?:index|new file|deleted file) ')
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pretty_re = re.compile('(?:new file|deleted file) ')
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special_re = re.compile('(?:index|new|deleted|copy|rename) ')
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def __init__(self, header):
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self.header = header
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self.hunks = []
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def binary(self):
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for h in self.header:
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if h.startswith('index '):
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return True
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def pretty(self, fp):
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for h in self.header:
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if h.startswith('index '):
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fp.write(_('this modifies a binary file (all or nothing)\n'))
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break
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if self.pretty_re.match(h):
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fp.write(h)
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if self.binary():
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fp.write(_('this is a binary file\n'))
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break
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if h.startswith('---'):
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fp.write(_('%d hunks, %d lines changed\n') %
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(len(self.hunks),
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sum([h.added + h.removed for h in self.hunks])))
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break
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fp.write(h)
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def write(self, fp):
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fp.write(''.join(self.header))
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def allhunks(self):
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for h in self.header:
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if self.allhunks_re.match(h):
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return True
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def files(self):
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fromfile, tofile = self.diff_re.match(self.header[0]).groups()
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if fromfile == tofile:
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return [fromfile]
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return [fromfile, tofile]
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def filename(self):
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return self.files()[-1]
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def __repr__(self):
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return '<header %s>' % (' '.join(map(repr, self.files())))
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def special(self):
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for h in self.header:
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if self.special_re.match(h):
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return True
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def countchanges(hunk):
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add = len([h for h in hunk if h[0] == '+'])
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rem = len([h for h in hunk if h[0] == '-'])
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return add, rem
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class hunk(object):
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maxcontext = 3
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def __init__(self, header, fromline, toline, proc, before, hunk, after):
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def trimcontext(number, lines):
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delta = len(lines) - self.maxcontext
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if False and delta > 0:
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return number + delta, lines[:self.maxcontext]
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return number, lines
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self.header = header
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self.fromline, self.before = trimcontext(fromline, before)
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self.toline, self.after = trimcontext(toline, after)
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self.proc = proc
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self.hunk = hunk
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self.added, self.removed = countchanges(self.hunk)
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def write(self, fp):
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delta = len(self.before) + len(self.after)
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fromlen = delta + self.removed
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tolen = delta + self.added
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fp.write('@@ -%d,%d +%d,%d @@%s\n' %
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(self.fromline, fromlen, self.toline, tolen,
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self.proc and (' ' + self.proc)))
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fp.write(''.join(self.before + self.hunk + self.after))
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pretty = write
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def filename(self):
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return self.header.filename()
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def __repr__(self):
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return '<hunk %r@%d>' % (self.filename(), self.fromline)
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def parsepatch(fp):
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class parser(object):
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def __init__(self):
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self.fromline = 0
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self.toline = 0
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self.proc = ''
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self.header = None
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self.context = []
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self.before = []
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self.hunk = []
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self.stream = []
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def addrange(self, (fromstart, fromend, tostart, toend, proc)):
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self.fromline = int(fromstart)
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self.toline = int(tostart)
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self.proc = proc
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def addcontext(self, context):
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if self.hunk:
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h = hunk(self.header, self.fromline, self.toline, self.proc,
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self.before, self.hunk, context)
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self.header.hunks.append(h)
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self.stream.append(h)
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self.fromline += len(self.before) + h.removed
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self.toline += len(self.before) + h.added
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self.before = []
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self.hunk = []
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self.proc = ''
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self.context = context
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def addhunk(self, hunk):
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if self.context:
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self.before = self.context
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self.context = []
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self.hunk = data
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def newfile(self, hdr):
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self.addcontext([])
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h = header(hdr)
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self.stream.append(h)
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self.header = h
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def finished(self):
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self.addcontext([])
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return self.stream
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transitions = {
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'file': {'context': addcontext,
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'file': newfile,
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'hunk': addhunk,
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'range': addrange},
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'context': {'file': newfile,
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'hunk': addhunk,
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'range': addrange},
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'hunk': {'context': addcontext,
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'file': newfile,
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'range': addrange},
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'range': {'context': addcontext,
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'hunk': addhunk},
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}
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p = parser()
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state = 'context'
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for newstate, data in scanpatch(fp):
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try:
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p.transitions[state][newstate](p, data)
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except KeyError:
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raise patch.PatchError('unhandled transition: %s -> %s' %
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(state, newstate))
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state = newstate
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return p.finished()
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def filterpatch(ui, chunks):
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chunks = list(chunks)
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chunks.reverse()
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seen = {}
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def consumefile():
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consumed = []
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while chunks:
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if isinstance(chunks[-1], header):
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break
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else:
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consumed.append(chunks.pop())
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return consumed
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resp_all = [None]
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resp_file = [None]
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applied = {}
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def prompt(query):
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if resp_all[0] is not None:
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return resp_all[0]
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if resp_file[0] is not None:
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return resp_file[0]
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while True:
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r = (ui.prompt(query + _(' [Ynsfdaq?] '), '[Ynsfdaq?]?$',
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matchflags=re.I) or 'y').lower()
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if r == '?':
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c = record.__doc__.find('y - record this change')
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for l in record.__doc__[c:].splitlines():
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if l: ui.write(_(l.strip()), '\n')
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continue
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elif r == 's':
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r = resp_file[0] = 'n'
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elif r == 'f':
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r = resp_file[0] = 'y'
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elif r == 'd':
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r = resp_all[0] = 'n'
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elif r == 'a':
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r = resp_all[0] = 'y'
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elif r == 'q':
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raise util.Abort(_('user quit'))
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return r
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while chunks:
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chunk = chunks.pop()
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if isinstance(chunk, header):
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resp_file = [None]
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fixoffset = 0
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hdr = ''.join(chunk.header)
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if hdr in seen:
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consumefile()
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continue
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seen[hdr] = True
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if resp_all[0] is None:
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chunk.pretty(ui)
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r = prompt(_('record changes to %s?') %
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_(' and ').join(map(repr, chunk.files())))
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if r == 'y':
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applied[chunk.filename()] = [chunk]
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if chunk.allhunks():
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applied[chunk.filename()] += consumefile()
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else:
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consumefile()
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else:
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if resp_file[0] is None and resp_all[0] is None:
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chunk.pretty(ui)
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r = prompt(_('record this change to %r?') %
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chunk.filename())
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if r == 'y':
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if fixoffset:
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chunk = copy.copy(chunk)
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chunk.toline += fixoffset
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applied[chunk.filename()].append(chunk)
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else:
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fixoffset += chunk.removed - chunk.added
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return reduce(operator.add, [h for h in applied.itervalues()
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if h[0].special() or len(h) > 1], [])
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def record(ui, repo, *pats, **opts):
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'''interactively select changes to commit
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If a list of files is omitted, all changes reported by "hg status"
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will be candidates for recording.
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You will be prompted for whether to record changes to each
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modified file, and for files with multiple changes, for each
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change to use. For each query, the following responses are
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possible:
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y - record this change
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n - skip this change
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s - skip remaining changes to this file
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f - record remaining changes to this file
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d - done, skip remaining changes and files
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a - record all changes to all remaining files
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q - quit, recording no changes
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? - display help'''
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if not ui.interactive:
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raise util.Abort(_('running non-interactively, use commit instead'))
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def recordfunc(ui, repo, files, message, match, opts):
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if files:
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changes = None
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else:
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changes = repo.status(files=files, match=match)[:5]
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modified, added, removed = changes[:3]
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files = modified + added + removed
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diffopts = mdiff.diffopts(git=True, nodates=True)
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fp = cStringIO.StringIO()
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patch.diff(repo, repo.dirstate.parents()[0], files=files,
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match=match, changes=changes, opts=diffopts, fp=fp)
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fp.seek(0)
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chunks = filterpatch(ui, parsepatch(fp))
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del fp
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contenders = {}
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for h in chunks:
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try: contenders.update(dict.fromkeys(h.files()))
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except AttributeError: pass
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newfiles = [f for f in files if f in contenders]
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if not newfiles:
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ui.status(_('no changes to record\n'))
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return 0
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if changes is None:
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changes = repo.status(files=newfiles, match=match)[:5]
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modified = dict.fromkeys(changes[0])
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backups = {}
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backupdir = repo.join('record-backups')
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try:
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os.mkdir(backupdir)
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except OSError, err:
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if err.errno != errno.EEXIST:
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raise
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try:
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for f in newfiles:
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if f not in modified:
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continue
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fd, tmpname = tempfile.mkstemp(prefix=f.replace('/', '_')+'.',
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dir=backupdir)
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os.close(fd)
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ui.debug('backup %r as %r\n' % (f, tmpname))
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util.copyfile(repo.wjoin(f), tmpname)
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backups[f] = tmpname
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fp = cStringIO.StringIO()
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for c in chunks:
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if c.filename() in backups:
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c.write(fp)
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dopatch = fp.tell()
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fp.seek(0)
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if backups:
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hg.revert(repo, repo.dirstate.parents()[0], backups.has_key)
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if dopatch:
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ui.debug('applying patch\n')
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ui.debug(fp.getvalue())
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patch.internalpatch(fp, ui, 1, repo.root)
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del fp
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repo.commit(newfiles, message, opts['user'], opts['date'], match,
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force_editor=opts.get('force_editor'))
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return 0
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finally:
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try:
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for realname, tmpname in backups.iteritems():
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ui.debug('restoring %r to %r\n' % (tmpname, realname))
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util.copyfile(tmpname, repo.wjoin(realname))
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os.unlink(tmpname)
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os.rmdir(backupdir)
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except OSError:
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pass
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return cmdutil.commit(ui, repo, recordfunc, pats, opts)
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cmdtable = {
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"record":
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(record,
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[('A', 'addremove', None,
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_('mark new/missing files as added/removed before committing')),
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] + commands.walkopts + commands.commitopts + commands.commitopts2,
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_('hg record [OPTION]... [FILE]...')),
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}
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