mirror of
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e5d231e804
We can check for file existence in the working directory (needed in case of recording) by simply using the given context and calculate the manifest only when there are in fact candidates for expansion/shrinking.
577 lines
22 KiB
Python
577 lines
22 KiB
Python
# keyword.py - $Keyword$ expansion for Mercurial
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#
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# Copyright 2007-2010 Christian Ebert <blacktrash@gmx.net>
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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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#
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# $Id$
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#
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# Keyword expansion hack against the grain of a DSCM
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#
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# There are many good reasons why this is not needed in a distributed
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# SCM, still it may be useful in very small projects based on single
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# files (like LaTeX packages), that are mostly addressed to an
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# audience not running a version control system.
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#
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# For in-depth discussion refer to
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# <http://mercurial.selenic.com/wiki/KeywordPlan>.
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#
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# Keyword expansion is based on Mercurial's changeset template mappings.
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#
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# Binary files are not touched.
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#
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# Files to act upon/ignore are specified in the [keyword] section.
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# Customized keyword template mappings in the [keywordmaps] section.
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#
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# Run "hg help keyword" and "hg kwdemo" to get info on configuration.
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'''expand keywords in tracked files
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This extension expands RCS/CVS-like or self-customized $Keywords$ in
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tracked text files selected by your configuration.
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Keywords are only expanded in local repositories and not stored in the
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change history. The mechanism can be regarded as a convenience for the
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current user or for archive distribution.
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Configuration is done in the [keyword], [keywordset] and [keywordmaps]
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sections of hgrc files.
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Example::
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[keyword]
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# expand keywords in every python file except those matching "x*"
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**.py =
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x* = ignore
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[keywordset]
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# prefer svn- over cvs-like default keywordmaps
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svn = True
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NOTE: the more specific you are in your filename patterns the less you
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lose speed in huge repositories.
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For [keywordmaps] template mapping and expansion demonstration and
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control run :hg:`kwdemo`. See :hg:`help templates` for a list of
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available templates and filters.
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Three additional date template filters are provided::
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utcdate "2006/09/18 15:13:13"
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svnutcdate "2006-09-18 15:13:13Z"
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svnisodate "2006-09-18 08:13:13 -700 (Mon, 18 Sep 2006)"
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The default template mappings (view with :hg:`kwdemo -d`) can be
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replaced with customized keywords and templates. Again, run
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:hg:`kwdemo` to control the results of your config changes.
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Before changing/disabling active keywords, run :hg:`kwshrink` to avoid
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the risk of inadvertently storing expanded keywords in the change
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history.
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To force expansion after enabling it, or a configuration change, run
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:hg:`kwexpand`.
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Expansions spanning more than one line and incremental expansions,
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like CVS' $Log$, are not supported. A keyword template map "Log =
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{desc}" expands to the first line of the changeset description.
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'''
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from mercurial import commands, cmdutil, dispatch, filelog, revlog, extensions
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from mercurial import patch, localrepo, templater, templatefilters, util, match
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from mercurial.hgweb import webcommands
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from mercurial.i18n import _
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import re, shutil, tempfile
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commands.optionalrepo += ' kwdemo'
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# hg commands that do not act on keywords
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nokwcommands = ('add addremove annotate bundle copy export grep incoming init'
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' log outgoing push rename rollback tip verify'
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' convert email glog')
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# hg commands that trigger expansion only when writing to working dir,
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# not when reading filelog, and unexpand when reading from working dir
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restricted = 'merge record qrecord resolve transplant'
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# commands using dorecord
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recordcommands = 'record qrecord'
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# names of extensions using dorecord
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recordextensions = 'record'
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# date like in cvs' $Date
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utcdate = lambda x: util.datestr((x[0], 0), '%Y/%m/%d %H:%M:%S')
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# date like in svn's $Date
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svnisodate = lambda x: util.datestr(x, '%Y-%m-%d %H:%M:%S %1%2 (%a, %d %b %Y)')
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# date like in svn's $Id
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svnutcdate = lambda x: util.datestr((x[0], 0), '%Y-%m-%d %H:%M:%SZ')
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# make keyword tools accessible
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kwtools = {'templater': None, 'hgcmd': '', 'inc': [], 'exc': ['.hg*']}
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def _defaultkwmaps(ui):
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'''Returns default keywordmaps according to keywordset configuration.'''
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templates = {
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'Revision': '{node|short}',
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'Author': '{author|user}',
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}
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kwsets = ({
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'Date': '{date|utcdate}',
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'RCSfile': '{file|basename},v',
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'RCSFile': '{file|basename},v', # kept for backwards compatibility
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# with hg-keyword
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'Source': '{root}/{file},v',
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'Id': '{file|basename},v {node|short} {date|utcdate} {author|user}',
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'Header': '{root}/{file},v {node|short} {date|utcdate} {author|user}',
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}, {
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'Date': '{date|svnisodate}',
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'Id': '{file|basename},v {node|short} {date|svnutcdate} {author|user}',
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'LastChangedRevision': '{node|short}',
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'LastChangedBy': '{author|user}',
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'LastChangedDate': '{date|svnisodate}',
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})
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templates.update(kwsets[ui.configbool('keywordset', 'svn')])
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return templates
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class kwtemplater(object):
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'''
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Sets up keyword templates, corresponding keyword regex, and
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provides keyword substitution functions.
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'''
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def __init__(self, ui, repo):
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self.ui = ui
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self.repo = repo
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self.match = match.match(repo.root, '', [],
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kwtools['inc'], kwtools['exc'])
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self.restrict = kwtools['hgcmd'] in restricted.split()
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self.record = kwtools['hgcmd'] in recordcommands.split()
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kwmaps = self.ui.configitems('keywordmaps')
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if kwmaps: # override default templates
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self.templates = dict((k, templater.parsestring(v, False))
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for k, v in kwmaps)
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else:
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self.templates = _defaultkwmaps(self.ui)
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escaped = map(re.escape, self.templates.keys())
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kwpat = r'\$(%s)(: [^$\n\r]*? )??\$' % '|'.join(escaped)
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self.re_kw = re.compile(kwpat)
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templatefilters.filters['utcdate'] = utcdate
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templatefilters.filters['svnisodate'] = svnisodate
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templatefilters.filters['svnutcdate'] = svnutcdate
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def substitute(self, data, path, ctx, subfunc):
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'''Replaces keywords in data with expanded template.'''
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def kwsub(mobj):
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kw = mobj.group(1)
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ct = cmdutil.changeset_templater(self.ui, self.repo,
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False, None, '', False)
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ct.use_template(self.templates[kw])
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self.ui.pushbuffer()
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ct.show(ctx, root=self.repo.root, file=path)
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ekw = templatefilters.firstline(self.ui.popbuffer())
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return '$%s: %s $' % (kw, ekw)
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return subfunc(kwsub, data)
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def expand(self, path, node, data):
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'''Returns data with keywords expanded.'''
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if not self.restrict and self.match(path) and not util.binary(data):
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ctx = self.repo.filectx(path, fileid=node).changectx()
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return self.substitute(data, path, ctx, self.re_kw.sub)
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return data
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def iskwfile(self, path, flagfunc):
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'''Returns true if path matches [keyword] pattern
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and is not a symbolic link.
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Caveat: localrepository._link fails on Windows.'''
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return self.match(path) and not 'l' in flagfunc(path)
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def overwrite(self, ctx, candidates, iswctx, expand):
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'''Overwrites selected files expanding/shrinking keywords.'''
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if self.record:
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candidates = [f for f in ctx.files() if f in ctx]
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candidates = [f for f in candidates if self.iskwfile(f, ctx.flags)]
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if candidates:
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self.restrict = True # do not expand when reading
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mf = ctx.manifest()
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msg = (expand and _('overwriting %s expanding keywords\n')
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or _('overwriting %s shrinking keywords\n'))
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for f in candidates:
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if not self.record:
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data = self.repo.file(f).read(mf[f])
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else:
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data = self.repo.wread(f)
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if util.binary(data):
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continue
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if expand:
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if iswctx:
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ctx = self.repo.filectx(f, fileid=mf[f]).changectx()
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data, found = self.substitute(data, f, ctx,
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self.re_kw.subn)
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else:
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found = self.re_kw.search(data)
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if found:
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self.ui.note(msg % f)
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self.repo.wwrite(f, data, mf.flags(f))
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if iswctx:
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self.repo.dirstate.normal(f)
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elif self.record:
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self.repo.dirstate.normallookup(f)
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self.restrict = False
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def shrinktext(self, text):
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'''Unconditionally removes all keyword substitutions from text.'''
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return self.re_kw.sub(r'$\1$', text)
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def shrink(self, fname, text):
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'''Returns text with all keyword substitutions removed.'''
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if self.match(fname) and not util.binary(text):
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return self.shrinktext(text)
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return text
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def shrinklines(self, fname, lines):
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'''Returns lines with keyword substitutions removed.'''
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if self.match(fname):
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text = ''.join(lines)
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if not util.binary(text):
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return self.shrinktext(text).splitlines(True)
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return lines
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def wread(self, fname, data):
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'''If in restricted mode returns data read from wdir with
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keyword substitutions removed.'''
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return self.restrict and self.shrink(fname, data) or data
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class kwfilelog(filelog.filelog):
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'''
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Subclass of filelog to hook into its read, add, cmp methods.
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Keywords are "stored" unexpanded, and processed on reading.
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'''
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def __init__(self, opener, kwt, path):
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super(kwfilelog, self).__init__(opener, path)
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self.kwt = kwt
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self.path = path
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def read(self, node):
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'''Expands keywords when reading filelog.'''
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data = super(kwfilelog, self).read(node)
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return self.kwt.expand(self.path, node, data)
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def add(self, text, meta, tr, link, p1=None, p2=None):
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'''Removes keyword substitutions when adding to filelog.'''
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text = self.kwt.shrink(self.path, text)
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return super(kwfilelog, self).add(text, meta, tr, link, p1, p2)
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def cmp(self, node, text):
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'''Removes keyword substitutions for comparison.'''
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text = self.kwt.shrink(self.path, text)
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if self.renamed(node):
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t2 = super(kwfilelog, self).read(node)
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return t2 != text
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return revlog.revlog.cmp(self, node, text)
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def _status(ui, repo, kwt, *pats, **opts):
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'''Bails out if [keyword] configuration is not active.
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Returns status of working directory.'''
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if kwt:
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return repo.status(match=cmdutil.match(repo, pats, opts), clean=True,
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unknown=opts.get('unknown') or opts.get('all'))
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if ui.configitems('keyword'):
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raise util.Abort(_('[keyword] patterns cannot match'))
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raise util.Abort(_('no [keyword] patterns configured'))
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def _kwfwrite(ui, repo, expand, *pats, **opts):
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'''Selects files and passes them to kwtemplater.overwrite.'''
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wctx = repo[None]
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if len(wctx.parents()) > 1:
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raise util.Abort(_('outstanding uncommitted merge'))
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kwt = kwtools['templater']
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wlock = repo.wlock()
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try:
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status = _status(ui, repo, kwt, *pats, **opts)
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modified, added, removed, deleted, unknown, ignored, clean = status
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if modified or added or removed or deleted:
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raise util.Abort(_('outstanding uncommitted changes'))
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kwt.overwrite(wctx, clean, True, expand)
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finally:
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wlock.release()
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def demo(ui, repo, *args, **opts):
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'''print [keywordmaps] configuration and an expansion example
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Show current, custom, or default keyword template maps and their
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expansions.
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Extend the current configuration by specifying maps as arguments
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and using -f/--rcfile to source an external hgrc file.
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Use -d/--default to disable current configuration.
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See :hg:`help templates` for information on templates and filters.
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'''
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def demoitems(section, items):
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ui.write('[%s]\n' % section)
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for k, v in sorted(items):
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ui.write('%s = %s\n' % (k, v))
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fn = 'demo.txt'
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tmpdir = tempfile.mkdtemp('', 'kwdemo.')
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ui.note(_('creating temporary repository at %s\n') % tmpdir)
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repo = localrepo.localrepository(ui, tmpdir, True)
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ui.setconfig('keyword', fn, '')
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uikwmaps = ui.configitems('keywordmaps')
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if args or opts.get('rcfile'):
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ui.status(_('\n\tconfiguration using custom keyword template maps\n'))
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if uikwmaps:
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ui.status(_('\textending current template maps\n'))
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if opts.get('default') or not uikwmaps:
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ui.status(_('\toverriding default template maps\n'))
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if opts.get('rcfile'):
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ui.readconfig(opts.get('rcfile'))
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if args:
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# simulate hgrc parsing
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rcmaps = ['[keywordmaps]\n'] + [a + '\n' for a in args]
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fp = repo.opener('hgrc', 'w')
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fp.writelines(rcmaps)
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fp.close()
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ui.readconfig(repo.join('hgrc'))
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kwmaps = dict(ui.configitems('keywordmaps'))
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elif opts.get('default'):
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ui.status(_('\n\tconfiguration using default keyword template maps\n'))
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kwmaps = _defaultkwmaps(ui)
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if uikwmaps:
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ui.status(_('\tdisabling current template maps\n'))
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for k, v in kwmaps.iteritems():
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ui.setconfig('keywordmaps', k, v)
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else:
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ui.status(_('\n\tconfiguration using current keyword template maps\n'))
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kwmaps = dict(uikwmaps) or _defaultkwmaps(ui)
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uisetup(ui)
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reposetup(ui, repo)
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ui.write('[extensions]\nkeyword =\n')
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demoitems('keyword', ui.configitems('keyword'))
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demoitems('keywordmaps', kwmaps.iteritems())
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keywords = '$' + '$\n$'.join(sorted(kwmaps.keys())) + '$\n'
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repo.wopener(fn, 'w').write(keywords)
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repo[None].add([fn])
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ui.note(_('\nkeywords written to %s:\n') % fn)
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ui.note(keywords)
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repo.dirstate.setbranch('demobranch')
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for name, cmd in ui.configitems('hooks'):
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if name.split('.', 1)[0].find('commit') > -1:
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repo.ui.setconfig('hooks', name, '')
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msg = _('hg keyword configuration and expansion example')
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ui.note("hg ci -m '%s'\n" % msg)
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repo.commit(text=msg)
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ui.status(_('\n\tkeywords expanded\n'))
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ui.write(repo.wread(fn))
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shutil.rmtree(tmpdir, ignore_errors=True)
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def expand(ui, repo, *pats, **opts):
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'''expand keywords in the working directory
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Run after (re)enabling keyword expansion.
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kwexpand refuses to run if given files contain local changes.
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'''
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# 3rd argument sets expansion to True
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_kwfwrite(ui, repo, True, *pats, **opts)
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def files(ui, repo, *pats, **opts):
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'''show files configured for keyword expansion
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List which files in the working directory are matched by the
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[keyword] configuration patterns.
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Useful to prevent inadvertent keyword expansion and to speed up
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execution by including only files that are actual candidates for
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expansion.
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See :hg:`help keyword` on how to construct patterns both for
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inclusion and exclusion of files.
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With -A/--all and -v/--verbose the codes used to show the status
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of files are::
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K = keyword expansion candidate
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k = keyword expansion candidate (not tracked)
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I = ignored
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i = ignored (not tracked)
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'''
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kwt = kwtools['templater']
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status = _status(ui, repo, kwt, *pats, **opts)
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cwd = pats and repo.getcwd() or ''
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modified, added, removed, deleted, unknown, ignored, clean = status
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files = []
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if not opts.get('unknown') or opts.get('all'):
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files = sorted(modified + added + clean)
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wctx = repo[None]
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kwfiles = [f for f in files if kwt.iskwfile(f, wctx.flags)]
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kwunknown = [f for f in unknown if kwt.iskwfile(f, wctx.flags)]
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if not opts.get('ignore') or opts.get('all'):
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showfiles = kwfiles, kwunknown
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else:
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showfiles = [], []
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if opts.get('all') or opts.get('ignore'):
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showfiles += ([f for f in files if f not in kwfiles],
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[f for f in unknown if f not in kwunknown])
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for char, filenames in zip('KkIi', showfiles):
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fmt = (opts.get('all') or ui.verbose) and '%s %%s\n' % char or '%s\n'
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for f in filenames:
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ui.write(fmt % repo.pathto(f, cwd))
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def shrink(ui, repo, *pats, **opts):
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'''revert expanded keywords in the working directory
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Run before changing/disabling active keywords or if you experience
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problems with :hg:`import` or :hg:`merge`.
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kwshrink refuses to run if given files contain local changes.
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'''
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# 3rd argument sets expansion to False
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_kwfwrite(ui, repo, False, *pats, **opts)
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def uisetup(ui):
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'''Collects [keyword] config in kwtools.
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Monkeypatches dispatch._parse if needed.'''
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for pat, opt in ui.configitems('keyword'):
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if opt != 'ignore':
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kwtools['inc'].append(pat)
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else:
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kwtools['exc'].append(pat)
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if kwtools['inc']:
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def kwdispatch_parse(orig, ui, args):
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'''Monkeypatch dispatch._parse to obtain running hg command.'''
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cmd, func, args, options, cmdoptions = orig(ui, args)
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kwtools['hgcmd'] = cmd
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return cmd, func, args, options, cmdoptions
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extensions.wrapfunction(dispatch, '_parse', kwdispatch_parse)
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def reposetup(ui, repo):
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'''Sets up repo as kwrepo for keyword substitution.
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Overrides file method to return kwfilelog instead of filelog
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if file matches user configuration.
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Wraps commit to overwrite configured files with updated
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keyword substitutions.
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Monkeypatches patch and webcommands.'''
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try:
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if (not repo.local() or not kwtools['inc']
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or kwtools['hgcmd'] in nokwcommands.split()
|
|
or '.hg' in util.splitpath(repo.root)
|
|
or repo._url.startswith('bundle:')):
|
|
return
|
|
except AttributeError:
|
|
pass
|
|
|
|
kwtools['templater'] = kwt = kwtemplater(ui, repo)
|
|
|
|
class kwrepo(repo.__class__):
|
|
def file(self, f):
|
|
if f[0] == '/':
|
|
f = f[1:]
|
|
return kwfilelog(self.sopener, kwt, f)
|
|
|
|
def wread(self, filename):
|
|
data = super(kwrepo, self).wread(filename)
|
|
return kwt.wread(filename, data)
|
|
|
|
def commit(self, *args, **opts):
|
|
# use custom commitctx for user commands
|
|
# other extensions can still wrap repo.commitctx directly
|
|
self.commitctx = self.kwcommitctx
|
|
try:
|
|
return super(kwrepo, self).commit(*args, **opts)
|
|
finally:
|
|
del self.commitctx
|
|
|
|
def kwcommitctx(self, ctx, error=False):
|
|
n = super(kwrepo, self).commitctx(ctx, error)
|
|
# no lock needed, only called from repo.commit() which already locks
|
|
if not kwt.record:
|
|
kwt.overwrite(self[n], sorted(ctx.added() + ctx.modified()),
|
|
False, True)
|
|
return n
|
|
|
|
# monkeypatches
|
|
def kwpatchfile_init(orig, self, ui, fname, opener,
|
|
missing=False, eolmode=None):
|
|
'''Monkeypatch/wrap patch.patchfile.__init__ to avoid
|
|
rejects or conflicts due to expanded keywords in working dir.'''
|
|
orig(self, ui, fname, opener, missing, eolmode)
|
|
# shrink keywords read from working dir
|
|
self.lines = kwt.shrinklines(self.fname, self.lines)
|
|
|
|
def kw_diff(orig, repo, node1=None, node2=None, match=None, changes=None,
|
|
opts=None):
|
|
'''Monkeypatch patch.diff to avoid expansion except when
|
|
comparing against working dir.'''
|
|
if node2 is not None:
|
|
kwt.match = util.never
|
|
elif node1 is not None and node1 != repo['.'].node():
|
|
kwt.restrict = True
|
|
return orig(repo, node1, node2, match, changes, opts)
|
|
|
|
def kwweb_skip(orig, web, req, tmpl):
|
|
'''Wraps webcommands.x turning off keyword expansion.'''
|
|
kwt.match = util.never
|
|
return orig(web, req, tmpl)
|
|
|
|
def kw_dorecord(orig, ui, repo, commitfunc, *pats, **opts):
|
|
'''Wraps record.dorecord expanding keywords after recording.'''
|
|
wlock = repo.wlock()
|
|
try:
|
|
# record returns 0 even when nothing has changed
|
|
# therefore compare nodes before and after
|
|
ctx = repo['.']
|
|
ret = orig(ui, repo, commitfunc, *pats, **opts)
|
|
recordctx = repo['.']
|
|
if ctx != recordctx:
|
|
kwt.overwrite(recordctx, None, False, True)
|
|
return ret
|
|
finally:
|
|
wlock.release()
|
|
|
|
repo.__class__ = kwrepo
|
|
|
|
extensions.wrapfunction(patch.patchfile, '__init__', kwpatchfile_init)
|
|
if not kwt.restrict:
|
|
extensions.wrapfunction(patch, 'diff', kw_diff)
|
|
for c in 'annotate changeset rev filediff diff'.split():
|
|
extensions.wrapfunction(webcommands, c, kwweb_skip)
|
|
for name in recordextensions.split():
|
|
try:
|
|
record = extensions.find(name)
|
|
extensions.wrapfunction(record, 'dorecord', kw_dorecord)
|
|
except KeyError:
|
|
pass
|
|
|
|
cmdtable = {
|
|
'kwdemo':
|
|
(demo,
|
|
[('d', 'default', None, _('show default keyword template maps')),
|
|
('f', 'rcfile', '',
|
|
_('read maps from rcfile'), _('FILE'))],
|
|
_('hg kwdemo [-d] [-f RCFILE] [TEMPLATEMAP]...')),
|
|
'kwexpand': (expand, commands.walkopts,
|
|
_('hg kwexpand [OPTION]... [FILE]...')),
|
|
'kwfiles':
|
|
(files,
|
|
[('A', 'all', None, _('show keyword status flags of all files')),
|
|
('i', 'ignore', None, _('show files excluded from expansion')),
|
|
('u', 'unknown', None, _('only show unknown (not tracked) files')),
|
|
] + commands.walkopts,
|
|
_('hg kwfiles [OPTION]... [FILE]...')),
|
|
'kwshrink': (shrink, commands.walkopts,
|
|
_('hg kwshrink [OPTION]... [FILE]...')),
|
|
}
|