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# help.py - help data for mercurial
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#
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# Copyright 2006 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from __future__ import absolute_import
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import itertools
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import os
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import textwrap
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from .i18n import (
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_,
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gettext,
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)
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from . import (
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cmdutil,
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encoding,
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error,
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extensions,
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filemerge,
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fileset,
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minirst,
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revset,
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templatefilters,
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templatekw,
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templater,
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util,
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)
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from .hgweb import (
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webcommands,
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)
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_exclkeywords = [
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"(DEPRECATED)",
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"(EXPERIMENTAL)",
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# i18n: "(DEPRECATED)" is a keyword, must be translated consistently
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_("(DEPRECATED)"),
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# i18n: "(EXPERIMENTAL)" is a keyword, must be translated consistently
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_("(EXPERIMENTAL)"),
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]
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def listexts(header, exts, indent=1, showdeprecated=False):
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'''return a text listing of the given extensions'''
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rst = []
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if exts:
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for name, desc in sorted(exts.iteritems()):
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if not showdeprecated and any(w in desc for w in _exclkeywords):
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continue
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rst.append('%s:%s: %s\n' % (' ' * indent, name, desc))
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if rst:
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rst.insert(0, '\n%s\n\n' % header)
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return rst
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def extshelp(ui):
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rst = loaddoc('extensions')(ui).splitlines(True)
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rst.extend(listexts(
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_('enabled extensions:'), extensions.enabled(), showdeprecated=True))
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rst.extend(listexts(_('disabled extensions:'), extensions.disabled()))
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doc = ''.join(rst)
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return doc
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def optrst(header, options, verbose):
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data = []
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multioccur = False
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for option in options:
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if len(option) == 5:
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shortopt, longopt, default, desc, optlabel = option
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else:
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shortopt, longopt, default, desc = option
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optlabel = _("VALUE") # default label
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if not verbose and any(w in desc for w in _exclkeywords):
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continue
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so = ''
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if shortopt:
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so = '-' + shortopt
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lo = '--' + longopt
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if default:
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desc += _(" (default: %s)") % default
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if isinstance(default, list):
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lo += " %s [+]" % optlabel
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multioccur = True
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elif (default is not None) and not isinstance(default, bool):
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lo += " %s" % optlabel
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data.append((so, lo, desc))
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if multioccur:
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header += (_(" ([+] can be repeated)"))
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rst = ['\n%s:\n\n' % header]
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rst.extend(minirst.maketable(data, 1))
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return ''.join(rst)
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def indicateomitted(rst, omitted, notomitted=None):
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rst.append('\n\n.. container:: omitted\n\n %s\n\n' % omitted)
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if notomitted:
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rst.append('\n\n.. container:: notomitted\n\n %s\n\n' % notomitted)
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def filtercmd(ui, cmd, kw, doc):
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if not ui.debugflag and cmd.startswith("debug") and kw != "debug":
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return True
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if not ui.verbose and doc and any(w in doc for w in _exclkeywords):
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return True
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return False
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def topicmatch(ui, kw):
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"""Return help topics matching kw.
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Returns {'section': [(name, summary), ...], ...} where section is
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one of topics, commands, extensions, or extensioncommands.
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"""
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kw = encoding.lower(kw)
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def lowercontains(container):
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return kw in encoding.lower(container) # translated in helptable
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results = {'topics': [],
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'commands': [],
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'extensions': [],
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'extensioncommands': [],
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}
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for names, header, doc in helptable:
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# Old extensions may use a str as doc.
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if (sum(map(lowercontains, names))
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or lowercontains(header)
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or (callable(doc) and lowercontains(doc(ui)))):
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results['topics'].append((names[0], header))
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from . import commands # avoid cycle
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for cmd, entry in commands.table.iteritems():
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if len(entry) == 3:
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summary = entry[2]
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else:
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summary = ''
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# translate docs *before* searching there
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docs = _(getattr(entry[0], '__doc__', None)) or ''
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if kw in cmd or lowercontains(summary) or lowercontains(docs):
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doclines = docs.splitlines()
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if doclines:
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summary = doclines[0]
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cmdname = cmd.partition('|')[0].lstrip('^')
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if filtercmd(ui, cmdname, kw, docs):
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continue
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results['commands'].append((cmdname, summary))
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for name, docs in itertools.chain(
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extensions.enabled(False).iteritems(),
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extensions.disabled().iteritems()):
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# extensions.load ignores the UI argument
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mod = extensions.load(None, name, '')
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name = name.rpartition('.')[-1]
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if lowercontains(name) or lowercontains(docs):
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# extension docs are already translated
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results['extensions'].append((name, docs.splitlines()[0]))
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for cmd, entry in getattr(mod, 'cmdtable', {}).iteritems():
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if kw in cmd or (len(entry) > 2 and lowercontains(entry[2])):
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cmdname = cmd.partition('|')[0].lstrip('^')
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if entry[0].__doc__:
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cmddoc = gettext(entry[0].__doc__).splitlines()[0]
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else:
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cmddoc = _('(no help text available)')
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if filtercmd(ui, cmdname, kw, cmddoc):
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continue
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results['extensioncommands'].append((cmdname, cmddoc))
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return results
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def loaddoc(topic, subdir=None):
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"""Return a delayed loader for help/topic.txt."""
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def loader(ui):
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docdir = os.path.join(util.datapath, 'help')
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if subdir:
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docdir = os.path.join(docdir, subdir)
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path = os.path.join(docdir, topic + ".txt")
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doc = gettext(util.readfile(path))
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for rewriter in helphooks.get(topic, []):
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doc = rewriter(ui, topic, doc)
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return doc
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return loader
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internalstable = sorted([
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(['bundles'], _('container for exchange of repository data'),
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loaddoc('bundles', subdir='internals')),
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(['changegroups'], _('representation of revlog data'),
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loaddoc('changegroups', subdir='internals')),
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(['revlogs'], _('revision storage mechanism'),
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loaddoc('revlogs', subdir='internals')),
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])
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def internalshelp(ui):
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"""Generate the index for the "internals" topic."""
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lines = []
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for names, header, doc in internalstable:
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lines.append(' :%s: %s\n' % (names[0], header))
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return ''.join(lines)
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helptable = sorted([
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(["config", "hgrc"], _("Configuration Files"), loaddoc('config')),
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(["dates"], _("Date Formats"), loaddoc('dates')),
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(["patterns"], _("File Name Patterns"), loaddoc('patterns')),
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(['environment', 'env'], _('Environment Variables'),
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loaddoc('environment')),
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(['revisions', 'revs'], _('Specifying Single Revisions'),
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loaddoc('revisions')),
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(['multirevs', 'mrevs'], _('Specifying Multiple Revisions'),
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loaddoc('multirevs')),
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(['revsets', 'revset'], _("Specifying Revision Sets"), loaddoc('revsets')),
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(['filesets', 'fileset'], _("Specifying File Sets"), loaddoc('filesets')),
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(['diffs'], _('Diff Formats'), loaddoc('diffs')),
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(['merge-tools', 'mergetools'], _('Merge Tools'), loaddoc('merge-tools')),
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(['templating', 'templates', 'template', 'style'], _('Template Usage'),
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loaddoc('templates')),
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(['urls'], _('URL Paths'), loaddoc('urls')),
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(["extensions"], _("Using Additional Features"), extshelp),
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(["subrepos", "subrepo"], _("Subrepositories"), loaddoc('subrepos')),
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(["hgweb"], _("Configuring hgweb"), loaddoc('hgweb')),
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(["glossary"], _("Glossary"), loaddoc('glossary')),
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(["hgignore", "ignore"], _("Syntax for Mercurial Ignore Files"),
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loaddoc('hgignore')),
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(["phases"], _("Working with Phases"), loaddoc('phases')),
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(['scripting'], _('Using Mercurial from scripts and automation'),
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loaddoc('scripting')),
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(['internals'], _("Technical implementation topics"),
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internalshelp),
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])
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# Maps topics with sub-topics to a list of their sub-topics.
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subtopics = {
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'internals': internalstable,
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}
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# Map topics to lists of callable taking the current topic help and
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# returning the updated version
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helphooks = {}
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def addtopichook(topic, rewriter):
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helphooks.setdefault(topic, []).append(rewriter)
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def makeitemsdoc(ui, topic, doc, marker, items, dedent=False):
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"""Extract docstring from the items key to function mapping, build a
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single documentation block and use it to overwrite the marker in doc.
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"""
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entries = []
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for name in sorted(items):
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text = (items[name].__doc__ or '').rstrip()
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if (not text
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or not ui.verbose and any(w in text for w in _exclkeywords)):
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continue
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text = gettext(text)
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if dedent:
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text = textwrap.dedent(text)
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lines = text.splitlines()
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doclines = [(lines[0])]
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for l in lines[1:]:
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# Stop once we find some Python doctest
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if l.strip().startswith('>>>'):
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break
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if dedent:
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doclines.append(l.rstrip())
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else:
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doclines.append(' ' + l.strip())
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entries.append('\n'.join(doclines))
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entries = '\n\n'.join(entries)
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return doc.replace(marker, entries)
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def addtopicsymbols(topic, marker, symbols, dedent=False):
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def add(ui, topic, doc):
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return makeitemsdoc(ui, topic, doc, marker, symbols, dedent=dedent)
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addtopichook(topic, add)
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addtopicsymbols('filesets', '.. predicatesmarker', fileset.symbols)
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addtopicsymbols('merge-tools', '.. internaltoolsmarker',
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filemerge.internalsdoc)
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addtopicsymbols('revsets', '.. predicatesmarker', revset.symbols)
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addtopicsymbols('templates', '.. keywordsmarker', templatekw.keywords)
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addtopicsymbols('templates', '.. filtersmarker', templatefilters.filters)
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addtopicsymbols('templates', '.. functionsmarker', templater.funcs)
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addtopicsymbols('hgweb', '.. webcommandsmarker', webcommands.commands,
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dedent=True)
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def help_(ui, name, unknowncmd=False, full=True, subtopic=None, **opts):
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'''
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Generate the help for 'name' as unformatted restructured text. If
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'name' is None, describe the commands available.
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'''
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from . import commands # avoid cycle
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def helpcmd(name, subtopic=None):
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try:
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aliases, entry = cmdutil.findcmd(name, commands.table,
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strict=unknowncmd)
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except error.AmbiguousCommand as inst:
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# py3k fix: except vars can't be used outside the scope of the
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# except block, nor can be used inside a lambda. python issue4617
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prefix = inst.args[0]
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select = lambda c: c.lstrip('^').startswith(prefix)
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rst = helplist(select)
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return rst
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rst = []
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# check if it's an invalid alias and display its error if it is
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if getattr(entry[0], 'badalias', None):
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rst.append(entry[0].badalias + '\n')
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if entry[0].unknowncmd:
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try:
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rst.extend(helpextcmd(entry[0].cmdname))
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except error.UnknownCommand:
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pass
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return rst
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# synopsis
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if len(entry) > 2:
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if entry[2].startswith('hg'):
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rst.append("%s\n" % entry[2])
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else:
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rst.append('hg %s %s\n' % (aliases[0], entry[2]))
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else:
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rst.append('hg %s\n' % aliases[0])
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# aliases
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if full and not ui.quiet and len(aliases) > 1:
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rst.append(_("\naliases: %s\n") % ', '.join(aliases[1:]))
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rst.append('\n')
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# description
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doc = gettext(entry[0].__doc__)
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if not doc:
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doc = _("(no help text available)")
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if util.safehasattr(entry[0], 'definition'): # aliased command
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if entry[0].definition.startswith('!'): # shell alias
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doc = _('shell alias for::\n\n %s') % entry[0].definition[1:]
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else:
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doc = _('alias for: hg %s\n\n%s') % (entry[0].definition, doc)
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doc = doc.splitlines(True)
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if ui.quiet or not full:
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rst.append(doc[0])
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else:
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rst.extend(doc)
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rst.append('\n')
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# check if this command shadows a non-trivial (multi-line)
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# extension help text
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try:
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mod = extensions.find(name)
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doc = gettext(mod.__doc__) or ''
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if '\n' in doc.strip():
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msg = _('(use "hg help -e %s" to show help for '
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'the %s extension)') % (name, name)
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rst.append('\n%s\n' % msg)
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except KeyError:
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pass
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# options
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if not ui.quiet and entry[1]:
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rst.append(optrst(_("options"), entry[1], ui.verbose))
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if ui.verbose:
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rst.append(optrst(_("global options"),
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commands.globalopts, ui.verbose))
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if not ui.verbose:
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if not full:
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rst.append(_('\n(use "hg %s -h" to show more help)\n')
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% name)
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elif not ui.quiet:
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rst.append(_('\n(some details hidden, use --verbose '
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'to show complete help)'))
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return rst
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def helplist(select=None, **opts):
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# list of commands
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if name == "shortlist":
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header = _('basic commands:\n\n')
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elif name == "debug":
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header = _('debug commands (internal and unsupported):\n\n')
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else:
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header = _('list of commands:\n\n')
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h = {}
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cmds = {}
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for c, e in commands.table.iteritems():
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f = c.partition("|")[0]
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if select and not select(f):
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continue
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if (not select and name != 'shortlist' and
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e[0].__module__ != commands.__name__):
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continue
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if name == "shortlist" and not f.startswith("^"):
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continue
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f = f.lstrip("^")
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doc = e[0].__doc__
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if filtercmd(ui, f, name, doc):
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continue
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doc = gettext(doc)
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if not doc:
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doc = _("(no help text available)")
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h[f] = doc.splitlines()[0].rstrip()
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cmds[f] = c.lstrip("^")
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rst = []
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if not h:
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if not ui.quiet:
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rst.append(_('no commands defined\n'))
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return rst
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if not ui.quiet:
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rst.append(header)
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fns = sorted(h)
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for f in fns:
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if ui.verbose:
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commacmds = cmds[f].replace("|",", ")
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rst.append(" :%s: %s\n" % (commacmds, h[f]))
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else:
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rst.append(' :%s: %s\n' % (f, h[f]))
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ex = opts.get
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anyopts = (ex('keyword') or not (ex('command') or ex('extension')))
|
|
|
if not name and anyopts:
|
|
|
exts = listexts(_('enabled extensions:'), extensions.enabled())
|
|
|
if exts:
|
|
|
rst.append('\n')
|
|
|
rst.extend(exts)
|
|
|
|
|
|
rst.append(_("\nadditional help topics:\n\n"))
|
|
|
topics = []
|
|
|
for names, header, doc in helptable:
|
|
|
topics.append((names[0], header))
|
|
|
for t, desc in topics:
|
|
|
rst.append(" :%s: %s\n" % (t, desc))
|
|
|
|
|
|
if ui.quiet:
|
|
|
pass
|
|
|
elif ui.verbose:
|
|
|
rst.append('\n%s\n' % optrst(_("global options"),
|
|
|
commands.globalopts, ui.verbose))
|
|
|
if name == 'shortlist':
|
|
|
rst.append(_('\n(use "hg help" for the full list '
|
|
|
'of commands)\n'))
|
|
|
else:
|
|
|
if name == 'shortlist':
|
|
|
rst.append(_('\n(use "hg help" for the full list of commands '
|
|
|
'or "hg -v" for details)\n'))
|
|
|
elif name and not full:
|
|
|
rst.append(_('\n(use "hg help %s" to show the full help '
|
|
|
'text)\n') % name)
|
|
|
elif name and cmds and name in cmds.keys():
|
|
|
rst.append(_('\n(use "hg help -v -e %s" to show built-in '
|
|
|
'aliases and global options)\n') % name)
|
|
|
else:
|
|
|
rst.append(_('\n(use "hg help -v%s" to show built-in aliases '
|
|
|
'and global options)\n')
|
|
|
% (name and " " + name or ""))
|
|
|
return rst
|
|
|
|
|
|
def helptopic(name, subtopic=None):
|
|
|
# Look for sub-topic entry first.
|
|
|
header, doc = None, None
|
|
|
if subtopic and name in subtopics:
|
|
|
for names, header, doc in subtopics[name]:
|
|
|
if subtopic in names:
|
|
|
break
|
|
|
|
|
|
if not header:
|
|
|
for names, header, doc in helptable:
|
|
|
if name in names:
|
|
|
break
|
|
|
else:
|
|
|
raise error.UnknownCommand(name)
|
|
|
|
|
|
rst = [minirst.section(header)]
|
|
|
|
|
|
# description
|
|
|
if not doc:
|
|
|
rst.append(" %s\n" % _("(no help text available)"))
|
|
|
if callable(doc):
|
|
|
rst += [" %s\n" % l for l in doc(ui).splitlines()]
|
|
|
|
|
|
if not ui.verbose:
|
|
|
omitted = _('(some details hidden, use --verbose'
|
|
|
' to show complete help)')
|
|
|
indicateomitted(rst, omitted)
|
|
|
|
|
|
try:
|
|
|
cmdutil.findcmd(name, commands.table)
|
|
|
rst.append(_('\nuse "hg help -c %s" to see help for '
|
|
|
'the %s command\n') % (name, name))
|
|
|
except error.UnknownCommand:
|
|
|
pass
|
|
|
return rst
|
|
|
|
|
|
def helpext(name, subtopic=None):
|
|
|
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)
|
|
|
rst = [_('%s extension - %s\n\n') % (name.rpartition('.')[-1], head)]
|
|
|
if tail:
|
|
|
rst.extend(tail.splitlines(True))
|
|
|
rst.append('\n')
|
|
|
|
|
|
if not ui.verbose:
|
|
|
omitted = _('(some details hidden, use --verbose'
|
|
|
' to show complete help)')
|
|
|
indicateomitted(rst, omitted)
|
|
|
|
|
|
if mod:
|
|
|
try:
|
|
|
ct = mod.cmdtable
|
|
|
except AttributeError:
|
|
|
ct = {}
|
|
|
modcmds = set([c.partition('|')[0] for c in ct])
|
|
|
rst.extend(helplist(modcmds.__contains__))
|
|
|
else:
|
|
|
rst.append(_('(use "hg help extensions" for information on enabling'
|
|
|
' extensions)\n'))
|
|
|
return rst
|
|
|
|
|
|
def helpextcmd(name, subtopic=None):
|
|
|
cmd, ext, mod = extensions.disabledcmd(ui, name,
|
|
|
ui.configbool('ui', 'strict'))
|
|
|
doc = gettext(mod.__doc__).splitlines()[0]
|
|
|
|
|
|
rst = listexts(_("'%s' is provided by the following "
|
|
|
"extension:") % cmd, {ext: doc}, indent=4,
|
|
|
showdeprecated=True)
|
|
|
rst.append('\n')
|
|
|
rst.append(_('(use "hg help extensions" for information on enabling '
|
|
|
'extensions)\n'))
|
|
|
return rst
|
|
|
|
|
|
|
|
|
rst = []
|
|
|
kw = opts.get('keyword')
|
|
|
if kw or name is None and any(opts[o] for o in opts):
|
|
|
matches = topicmatch(ui, name or '')
|
|
|
helpareas = []
|
|
|
if opts.get('extension'):
|
|
|
helpareas += [('extensions', _('Extensions'))]
|
|
|
if opts.get('command'):
|
|
|
helpareas += [('commands', _('Commands'))]
|
|
|
if not helpareas:
|
|
|
helpareas = [('topics', _('Topics')),
|
|
|
('commands', _('Commands')),
|
|
|
('extensions', _('Extensions')),
|
|
|
('extensioncommands', _('Extension Commands'))]
|
|
|
for t, title in helpareas:
|
|
|
if matches[t]:
|
|
|
rst.append('%s:\n\n' % title)
|
|
|
rst.extend(minirst.maketable(sorted(matches[t]), 1))
|
|
|
rst.append('\n')
|
|
|
if not rst:
|
|
|
msg = _('no matches')
|
|
|
hint = _('try "hg help" for a list of topics')
|
|
|
raise error.Abort(msg, hint=hint)
|
|
|
elif name and name != 'shortlist':
|
|
|
queries = []
|
|
|
if unknowncmd:
|
|
|
queries += [helpextcmd]
|
|
|
if opts.get('extension'):
|
|
|
queries += [helpext]
|
|
|
if opts.get('command'):
|
|
|
queries += [helpcmd]
|
|
|
if not queries:
|
|
|
queries = (helptopic, helpcmd, helpext, helpextcmd)
|
|
|
for f in queries:
|
|
|
try:
|
|
|
rst = f(name, subtopic)
|
|
|
break
|
|
|
except error.UnknownCommand:
|
|
|
pass
|
|
|
else:
|
|
|
if unknowncmd:
|
|
|
raise error.UnknownCommand(name)
|
|
|
else:
|
|
|
msg = _('no such help topic: %s') % name
|
|
|
hint = _('try "hg help --keyword %s"') % name
|
|
|
raise error.Abort(msg, hint=hint)
|
|
|
else:
|
|
|
# program name
|
|
|
if not ui.quiet:
|
|
|
rst = [_("Mercurial Distributed SCM\n"), '\n']
|
|
|
rst.extend(helplist(None, **opts))
|
|
|
|
|
|
return ''.join(rst)
|
|
|
|
