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# keyword.py - $Keyword$ expansion for Mercurial
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#
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# Copyright 2007, 2008 Christian Ebert <blacktrash@gmx.net>
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#
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# This software may be used and distributed according to the terms
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# of the GNU General Public License, incorporated herein by reference.
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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 audience
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# 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://www.selenic.com/mercurial/wiki/index.cgi/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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# Setup in hgrc:
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#
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# [extensions]
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# # enable extension
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# hgext.keyword =
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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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'''keyword expansion in local repositories
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This extension expands RCS/CVS-like or self-customized $Keywords$
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in tracked text files selected by your configuration.
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Keywords are only expanded in local repositories and not stored in
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the change history. The mechanism can be regarded as a convenience
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for the current user or for archive distribution.
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Configuration is done in the [keyword] and [keywordmaps] sections
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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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Note: the more specific you are in your filename patterns
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the less you lose speed in huge repos.
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For [keywordmaps] template mapping and expansion demonstration and
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control run "hg kwdemo".
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An additional date template filter {date|utcdate} is provided.
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The default template mappings (view with "hg kwdemo -d") can be replaced
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with customized keywords and templates.
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Again, run "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 inadvertedly storing expanded keywords in the change 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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Also, when committing with the record extension or using mq's qrecord, be aware
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that keywords cannot be updated. Again, run "hg kwexpand" on the files in
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question to update keyword expansions after all changes have been checked in.
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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
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"Log = {desc}" expands to the first line of the changeset description.
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'''
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from mercurial import commands, cmdutil, context, dispatch, filelog, revlog
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from mercurial import patch, localrepo, templater, templatefilters, util
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from mercurial.hgweb import webcommands
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from mercurial.node import nullid, hex
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from mercurial.i18n import _
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import re, shutil, tempfile, time
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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 bundle copy export grep incoming init'
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' log outgoing push rename rollback tip'
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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 = 'record qfold qimport qnew qpush qrefresh qrecord'
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def utcdate(date):
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'''Returns hgdate in cvs-like UTC format.'''
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return time.strftime('%Y/%m/%d %H:%M:%S', time.gmtime(date[0]))
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# make keyword tools accessible
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kwtools = {'templater': None, 'hgcmd': '', 'inc': [], 'exc': ['.hg*']}
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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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templates = {
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'Revision': '{node|short}',
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'Author': '{author|user}',
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'Date': '{date|utcdate}',
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'RCSFile': '{file|basename},v',
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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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def __init__(self, ui, repo):
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self.ui = ui
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self.repo = repo
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self.matcher = util.matcher(repo.root,
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inc=kwtools['inc'], exc=kwtools['exc'])[1]
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self.restrict = kwtools['hgcmd'] in restricted.split()
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kwmaps = self.ui.configitems('keywordmaps')
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if kwmaps: # override default templates
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kwmaps = [(k, templater.parsestring(v, False))
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for (k, v) in kwmaps]
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self.templates = dict(kwmaps)
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escaped = map(re.escape, self.templates.keys())
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kwpat = r'\$(%s)(: [^$\n\r]*? )??\$' % '|'.join(escaped)
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self.re_kw = re.compile(kwpat)
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templatefilters.filters['utcdate'] = utcdate
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self.ct = cmdutil.changeset_templater(self.ui, self.repo,
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False, '', False)
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def getnode(self, path, fnode):
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'''Derives changenode from file path and filenode.'''
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# used by kwfilelog.read and kwexpand
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c = context.filectx(self.repo, path, fileid=fnode)
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return c.node()
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def substitute(self, data, path, node, subfunc):
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'''Replaces keywords in data with expanded template.'''
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def kwsub(mobj):
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kw = mobj.group(1)
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self.ct.use_template(self.templates[kw])
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self.ui.pushbuffer()
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self.ct.show(changenode=node, root=self.repo.root, file=path)
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ekw = templatefilters.firstline(self.ui.popbuffer())
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return '$%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.matcher(path) and not util.binary(data):
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changenode = self.getnode(path, node)
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return self.substitute(data, path, changenode, self.re_kw.sub)
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return data
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def iskwfile(self, path, islink):
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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.matcher(path) and not islink(path)
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def overwrite(self, node, expand, files):
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'''Overwrites selected files expanding/shrinking keywords.'''
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ctx = self.repo.changectx(node)
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mf = ctx.manifest()
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if node is not None: # commit
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files = [f for f in ctx.files() if f in mf]
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notify = self.ui.debug
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else: # kwexpand/kwshrink
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notify = self.ui.note
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candidates = [f for f in files if self.iskwfile(f, mf.linkf)]
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if candidates:
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self.restrict = True # do not expand when reading
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candidates.sort()
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action = expand and 'expanding' or 'shrinking'
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for f in candidates:
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fp = self.repo.file(f)
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data = fp.read(mf[f])
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if util.binary(data):
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continue
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if expand:
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changenode = node or self.getnode(f, mf[f])
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data, found = self.substitute(data, f, changenode,
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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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notify(_('overwriting %s %s keywords\n') % (f, action))
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self.repo.wwrite(f, data, mf.flags(f))
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self.repo.dirstate.normal(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.matcher(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.matcher(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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files, match, anypats = cmdutil.matchpats(repo, pats, opts)
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return repo.status(files=files, match=match, list_clean=True)
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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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kwt = kwtools['templater']
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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 in given files'))
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wlock = lock = None
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try:
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wlock = repo.wlock()
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lock = repo.lock()
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kwt.overwrite(None, expand, clean)
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finally:
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del wlock, lock
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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
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and their expansion.
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Extend current configuration by specifying maps as arguments
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and optionally by reading from an additional hgrc file.
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Override current keyword template maps with "default" option.
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'''
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def demostatus(stat):
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ui.status(_('\n\t%s\n') % stat)
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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 items:
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ui.write('%s = %s\n' % (k, v))
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msg = 'hg keyword config and expansion example'
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kwstatus = 'current'
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fn = 'demo.txt'
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branchname = 'demobranch'
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tmpdir = tempfile.mkdtemp('', 'kwdemo.')
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ui.note(_('creating temporary repo 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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if args or opts.get('rcfile'):
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kwstatus = 'custom'
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if opts.get('rcfile'):
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ui.readconfig(opts.get('rcfile'))
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if opts.get('default'):
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kwstatus = 'default'
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kwmaps = kwtemplater.templates
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if ui.configitems('keywordmaps'):
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# override maps from optional rcfile
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for k, v in kwmaps.iteritems():
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ui.setconfig('keywordmaps', k, v)
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elif 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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if not opts.get('default'):
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kwmaps = dict(ui.configitems('keywordmaps')) or kwtemplater.templates
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uisetup(ui)
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reposetup(ui, repo)
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for k, v in ui.configitems('extensions'):
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if k.endswith('keyword'):
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extension = '%s = %s' % (k, v)
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break
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demostatus('config using %s keyword template maps' % kwstatus)
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ui.write('[extensions]\n%s\n' % extension)
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demoitems('keyword', ui.configitems('keyword'))
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demoitems('keywordmaps', kwmaps.iteritems())
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keywords = '$' + '$\n$'.join(kwmaps.keys()) + '$\n'
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repo.wopener(fn, 'w').write(keywords)
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repo.add([fn])
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path = repo.wjoin(fn)
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ui.note(_('\n%s keywords written to %s:\n') % (kwstatus, path))
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ui.note(keywords)
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ui.note('\nhg -R "%s" branch "%s"\n' % (tmpdir, branchname))
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# silence branch command if not verbose
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quiet = ui.quiet
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ui.quiet = not ui.verbose
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commands.branch(ui, repo, branchname)
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ui.quiet = quiet
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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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ui.note(_('unhooked all commit hooks\n'))
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ui.note('hg -R "%s" ci -m "%s"\n' % (tmpdir, msg))
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repo.commit(text=msg)
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format = ui.verbose and ' in %s' % path or ''
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demostatus('%s keywords expanded%s' % (kwstatus, format))
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ui.write(repo.wread(fn))
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ui.debug(_('\nremoving temporary repo %s\n') % tmpdir)
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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 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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'''print files currently configured for keyword expansion
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Crosscheck which files in working directory are potential targets for
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keyword expansion.
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That is, files matched by [keyword] config patterns but not symlinks.
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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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modified, added, removed, deleted, unknown, ignored, clean = status
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files = modified + added + clean
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if opts.get('untracked'):
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files += unknown
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files.sort()
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wctx = repo.workingctx()
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islink = lambda p: 'l' in wctx.fileflags(p)
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kwfiles = [f for f in files if kwt.iskwfile(f, islink)]
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cwd = pats and repo.getcwd() or ''
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kwfstats = not opts.get('ignore') and (('K', kwfiles),) or ()
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if opts.get('all') or opts.get('ignore'):
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kwfstats += (('I', [f for f in files if f not in kwfiles]),)
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for char, filenames in kwfstats:
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format = (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(format % repo.pathto(f, cwd))
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def shrink(ui, repo, *pats, **opts):
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'''revert expanded keywords in working directory
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Run before changing/disabling active keywords
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or if you experience problems with "hg import" or "hg merge".
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|
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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
|
|
|
_kwfwrite(ui, repo, False, *pats, **opts)
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|
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|
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|
|
def uisetup(ui):
|
|
|
'''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(ui, args):
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|
'''Monkeypatch dispatch._parse to obtain running hg command.'''
|
|
|
cmd, func, args, options, cmdoptions = dispatch_parse(ui, args)
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|
kwtools['hgcmd'] = cmd
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|
return cmd, func, args, options, cmdoptions
|
|
|
|
|
|
dispatch_parse = dispatch._parse
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|
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
|
|
|
if file matches user configuration.
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|
|
Wraps commit to overwrite configured files with updated
|
|
|
keyword substitutions.
|
|
|
Monkeypatches patch and webcommands.'''
|
|
|
|
|
|
try:
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|
|
if (not repo.local() or not kwtools['inc']
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|
|
or kwtools['hgcmd'] in nokwcommands.split()
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|
|
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, files=None, text='', user=None, date=None,
|
|
|
match=util.always, force=False, force_editor=False,
|
|
|
p1=None, p2=None, extra={}, empty_ok=False):
|
|
|
wlock = lock = None
|
|
|
_p1 = _p2 = None
|
|
|
try:
|
|
|
wlock = self.wlock()
|
|
|
lock = self.lock()
|
|
|
# store and postpone commit hooks
|
|
|
commithooks = {}
|
|
|
for name, cmd in ui.configitems('hooks'):
|
|
|
if name.split('.', 1)[0] == 'commit':
|
|
|
commithooks[name] = cmd
|
|
|
ui.setconfig('hooks', name, None)
|
|
|
if commithooks:
|
|
|
# store parents for commit hook environment
|
|
|
if p1 is None:
|
|
|
_p1, _p2 = repo.dirstate.parents()
|
|
|
else:
|
|
|
_p1, _p2 = p1, p2 or nullid
|
|
|
_p1 = hex(_p1)
|
|
|
if _p2 == nullid:
|
|
|
_p2 = ''
|
|
|
else:
|
|
|
_p2 = hex(_p2)
|
|
|
|
|
|
n = super(kwrepo, self).commit(files, text, user, date, match,
|
|
|
force, force_editor, p1, p2,
|
|
|
extra, empty_ok)
|
|
|
|
|
|
# restore commit hooks
|
|
|
for name, cmd in commithooks.iteritems():
|
|
|
ui.setconfig('hooks', name, cmd)
|
|
|
if n is not None:
|
|
|
kwt.overwrite(n, True, None)
|
|
|
repo.hook('commit', node=n, parent1=_p1, parent2=_p2)
|
|
|
return n
|
|
|
finally:
|
|
|
del wlock, lock
|
|
|
|
|
|
# monkeypatches
|
|
|
def kwpatchfile_init(self, ui, fname, missing=False):
|
|
|
'''Monkeypatch/wrap patch.patchfile.__init__ to avoid
|
|
|
rejects or conflicts due to expanded keywords in working dir.'''
|
|
|
patchfile_init(self, ui, fname, missing)
|
|
|
# shrink keywords read from working dir
|
|
|
self.lines = kwt.shrinklines(self.fname, self.lines)
|
|
|
|
|
|
def kw_diff(repo, node1=None, node2=None, files=None, match=util.always,
|
|
|
fp=None, changes=None, opts=None):
|
|
|
'''Monkeypatch patch.diff to avoid expansion except when
|
|
|
comparing against working dir.'''
|
|
|
if node2 is not None:
|
|
|
kwt.matcher = util.never
|
|
|
elif node1 is not None and node1 != repo.changectx().node():
|
|
|
kwt.restrict = True
|
|
|
patch_diff(repo, node1, node2, files, match, fp, changes, opts)
|
|
|
|
|
|
def kwweb_changeset(web, req, tmpl):
|
|
|
'''Wraps webcommands.changeset turning off keyword expansion.'''
|
|
|
kwt.matcher = util.never
|
|
|
return webcommands_changeset(web, req, tmpl)
|
|
|
|
|
|
def kwweb_filediff(web, req, tmpl):
|
|
|
'''Wraps webcommands.filediff turning off keyword expansion.'''
|
|
|
kwt.matcher = util.never
|
|
|
return webcommands_filediff(web, req, tmpl)
|
|
|
|
|
|
repo.__class__ = kwrepo
|
|
|
|
|
|
patchfile_init = patch.patchfile.__init__
|
|
|
patch_diff = patch.diff
|
|
|
webcommands_changeset = webcommands.changeset
|
|
|
webcommands_filediff = webcommands.filediff
|
|
|
|
|
|
patch.patchfile.__init__ = kwpatchfile_init
|
|
|
patch.diff = kw_diff
|
|
|
webcommands.changeset = webcommands.rev = kwweb_changeset
|
|
|
webcommands.filediff = webcommands.diff = kwweb_filediff
|
|
|
|
|
|
|
|
|
cmdtable = {
|
|
|
'kwdemo':
|
|
|
(demo,
|
|
|
[('d', 'default', None, _('show default keyword template maps')),
|
|
|
('f', 'rcfile', [], _('read maps from rcfile'))],
|
|
|
_('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', 'untracked', None, _('additionally show untracked files')),
|
|
|
] + commands.walkopts,
|
|
|
_('hg kwfiles [OPTION]... [FILE]...')),
|
|
|
'kwshrink': (shrink, commands.walkopts,
|
|
|
_('hg kwshrink [OPTION]... [FILE]...')),
|
|
|
}
|
|
|
|
