Mercurial > hg
view mercurial/ignore.py @ 24407:dd01834a696f stable
annotate: reuse ancestry context when adjusting linkrev (issue4532)
The linkrev adjustment will likely do the same ancestry walking multiple time
so we already have an optional mechanism to take advantage of this. Since
2896f53509a7, linkrev adjustment was done lazily to prevent too bad performance
impact on rename computation. However, this laziness created a quadratic
situation in 'annotate'.
Mercurial repo: hg annotate mercurial/commands.py
before: 8.090
after: 36.300
Mozilla repo: hg annotate layout/generic/nsTextFrame.cpp
before: 1.190
after: 290.230
So we setup sharing of the ancestry context in the annotate case too. Linkrev
adjustment still have an impact but it a much more sensible one.
Mercurial repo: hg annotate mercurial/commands.py
before: 36.300
after: 10.230
Mozilla repo: hg annotate layout/generic/nsTextFrame.cpp
before: 290.230
after: 5.560
author | Pierre-Yves David <pierre-yves.david@fb.com> |
---|---|
date | Thu, 19 Mar 2015 19:52:23 -0700 |
parents | 0127366df8fe |
children | 8cf7f0c4cb14 |
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# ignore.py - ignored file handling for mercurial # # Copyright 2007 Matt Mackall <mpm@selenic.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from i18n import _ import util, match import re _commentre = None def ignorepats(lines): '''parse lines (iterable) of .hgignore text, returning a tuple of (patterns, parse errors). These patterns should be given to compile() to be validated and converted into a match function.''' syntaxes = {'re': 'relre:', 'regexp': 'relre:', 'glob': 'relglob:'} syntax = 'relre:' patterns = [] warnings = [] for line in lines: if "#" in line: global _commentre if not _commentre: _commentre = re.compile(r'((^|[^\\])(\\\\)*)#.*') # remove comments prefixed by an even number of escapes line = _commentre.sub(r'\1', line) # fixup properly escaped comments that survived the above line = line.replace("\\#", "#") line = line.rstrip() if not line: continue if line.startswith('syntax:'): s = line[7:].strip() try: syntax = syntaxes[s] except KeyError: warnings.append(_("ignoring invalid syntax '%s'") % s) continue pat = syntax + line for s, rels in syntaxes.iteritems(): if line.startswith(rels): pat = line break elif line.startswith(s+':'): pat = rels + line[len(s) + 1:] break patterns.append(pat) return patterns, warnings def readpats(root, files, warn): '''return a dict mapping ignore-file-name to list-of-patterns''' pats = {} for f in files: if f in pats: continue try: pats[f] = [] fp = open(f) pats[f], warnings = ignorepats(fp) fp.close() for warning in warnings: warn("%s: %s\n" % (f, warning)) except IOError, inst: if f != files[0]: warn(_("skipping unreadable ignore file '%s': %s\n") % (f, inst.strerror)) return [(f, pats[f]) for f in files if f in pats] def ignore(root, files, warn): '''return matcher covering patterns in 'files'. the files parsed for patterns include: .hgignore in the repository root any additional files specified in the [ui] section of ~/.hgrc trailing white space is dropped. the escape character is backslash. comments start with #. empty lines are skipped. lines can be of the following formats: syntax: regexp # defaults following lines to non-rooted regexps syntax: glob # defaults following lines to non-rooted globs re:pattern # non-rooted regular expression glob:pattern # non-rooted glob pattern # pattern of the current default type''' pats = readpats(root, files, warn) allpats = [] for f, patlist in pats: allpats.extend(patlist) if not allpats: return util.never try: ignorefunc = match.match(root, '', [], allpats) except util.Abort: # Re-raise an exception where the src is the right file for f, patlist in pats: try: match.match(root, '', [], patlist) except util.Abort, inst: raise util.Abort('%s: %s' % (f, inst[0])) return ignorefunc