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# match.py - filename matching
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#
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# Copyright 2008, 2009 Matt Mackall <mpm@selenic.com> and others
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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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import copy, re
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import util, pathutil
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from i18n import _
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propertycache = util.propertycache
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def _rematcher(regex):
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'''compile the regexp with the best available regexp engine and return a
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matcher function'''
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m = util.re.compile(regex)
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try:
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# slightly faster, provided by facebook's re2 bindings
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return m.test_match
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except AttributeError:
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return m.match
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def _expandsets(kindpats, ctx, listsubrepos):
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'''Returns the kindpats list with the 'set' patterns expanded.'''
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fset = set()
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other = []
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for kind, pat, source in kindpats:
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if kind == 'set':
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if not ctx:
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raise util.Abort("fileset expression with no context")
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s = ctx.getfileset(pat)
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fset.update(s)
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if listsubrepos:
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for subpath in ctx.substate:
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s = ctx.sub(subpath).getfileset(pat)
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fset.update(subpath + '/' + f for f in s)
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continue
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other.append((kind, pat, source))
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return fset, other
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def _expandsubinclude(kindpats, root):
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'''Returns the list of subinclude matchers and the kindpats without the
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subincludes in it.'''
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relmatchers = []
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other = []
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for kind, pat, source in kindpats:
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if kind == 'subinclude':
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sourceroot = pathutil.dirname(util.normpath(source))
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pat = util.pconvert(pat)
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path = pathutil.join(sourceroot, pat)
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newroot = pathutil.dirname(path)
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relmatcher = match(newroot, '', [], ['include:%s' % path])
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prefix = pathutil.canonpath(root, root, newroot)
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if prefix:
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prefix += '/'
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relmatchers.append((prefix, relmatcher))
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else:
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other.append((kind, pat, source))
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return relmatchers, other
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def _kindpatsalwaysmatch(kindpats):
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""""Checks whether the kindspats match everything, as e.g.
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'relpath:.' does.
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"""
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for kind, pat, source in kindpats:
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if pat != '' or kind not in ['relpath', 'glob']:
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return False
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return True
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class match(object):
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def __init__(self, root, cwd, patterns, include=[], exclude=[],
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default='glob', exact=False, auditor=None, ctx=None,
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listsubrepos=False, warn=None, badfn=None):
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"""build an object to match a set of file patterns
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arguments:
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root - the canonical root of the tree you're matching against
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cwd - the current working directory, if relevant
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patterns - patterns to find
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include - patterns to include (unless they are excluded)
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exclude - patterns to exclude (even if they are included)
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default - if a pattern in patterns has no explicit type, assume this one
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exact - patterns are actually filenames (include/exclude still apply)
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warn - optional function used for printing warnings
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badfn - optional bad() callback for this matcher instead of the default
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a pattern is one of:
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'glob:<glob>' - a glob relative to cwd
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're:<regexp>' - a regular expression
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'path:<path>' - a path relative to repository root
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'relglob:<glob>' - an unrooted glob (*.c matches C files in all dirs)
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'relpath:<path>' - a path relative to cwd
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'relre:<regexp>' - a regexp that needn't match the start of a name
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'set:<fileset>' - a fileset expression
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'include:<path>' - a file of patterns to read and include
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'subinclude:<path>' - a file of patterns to match against files under
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the same directory
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'<something>' - a pattern of the specified default type
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"""
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self._root = root
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self._cwd = cwd
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self._files = [] # exact files and roots of patterns
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self._anypats = bool(include or exclude)
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self._always = False
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self._pathrestricted = bool(include or exclude or patterns)
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self._warn = warn
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self._includeroots = set()
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self._includedirs = set(['.'])
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self._excluderoots = set()
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if badfn is not None:
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self.bad = badfn
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matchfns = []
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if include:
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kindpats = self._normalize(include, 'glob', root, cwd, auditor)
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self.includepat, im = _buildmatch(ctx, kindpats, '(?:/|$)',
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listsubrepos, root)
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self._includeroots.update(_roots(kindpats))
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self._includedirs.update(util.dirs(self._includeroots))
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matchfns.append(im)
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if exclude:
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kindpats = self._normalize(exclude, 'glob', root, cwd, auditor)
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self.excludepat, em = _buildmatch(ctx, kindpats, '(?:/|$)',
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listsubrepos, root)
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if not _anypats(kindpats):
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self._excluderoots.update(_roots(kindpats))
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matchfns.append(lambda f: not em(f))
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if exact:
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if isinstance(patterns, list):
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self._files = patterns
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else:
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self._files = list(patterns)
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matchfns.append(self.exact)
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elif patterns:
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kindpats = self._normalize(patterns, default, root, cwd, auditor)
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if not _kindpatsalwaysmatch(kindpats):
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self._files = _roots(kindpats)
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self._anypats = self._anypats or _anypats(kindpats)
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self.patternspat, pm = _buildmatch(ctx, kindpats, '$',
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listsubrepos, root)
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matchfns.append(pm)
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if not matchfns:
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m = util.always
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self._always = True
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elif len(matchfns) == 1:
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m = matchfns[0]
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else:
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def m(f):
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for matchfn in matchfns:
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if not matchfn(f):
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return False
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return True
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self.matchfn = m
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self._fileroots = set(self._files)
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def __call__(self, fn):
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return self.matchfn(fn)
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def __iter__(self):
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for f in self._files:
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yield f
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# Callbacks related to how the matcher is used by dirstate.walk.
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# Subscribers to these events must monkeypatch the matcher object.
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def bad(self, f, msg):
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'''Callback from dirstate.walk for each explicit file that can't be
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found/accessed, with an error message.'''
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pass
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# If an explicitdir is set, it will be called when an explicitly listed
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# directory is visited.
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explicitdir = None
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# If an traversedir is set, it will be called when a directory discovered
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# by recursive traversal is visited.
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traversedir = None
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def abs(self, f):
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'''Convert a repo path back to path that is relative to the root of the
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matcher.'''
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return f
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def rel(self, f):
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'''Convert repo path back to path that is relative to cwd of matcher.'''
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return util.pathto(self._root, self._cwd, f)
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def uipath(self, f):
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'''Convert repo path to a display path. If patterns or -I/-X were used
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to create this matcher, the display path will be relative to cwd.
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Otherwise it is relative to the root of the repo.'''
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return (self._pathrestricted and self.rel(f)) or self.abs(f)
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def files(self):
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'''Explicitly listed files or patterns or roots:
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if no patterns or .always(): empty list,
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if exact: list exact files,
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if not .anypats(): list all files and dirs,
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else: optimal roots'''
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return self._files
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@propertycache
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def _dirs(self):
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return set(util.dirs(self._fileroots)) | set(['.'])
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def visitdir(self, dir):
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'''Decides whether a directory should be visited based on whether it
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has potential matches in it or one of its subdirectories. This is
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based on the match's primary, included, and excluded patterns.
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This function's behavior is undefined if it has returned False for
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one of the dir's parent directories.
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'''
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if dir in self._excluderoots:
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return False
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if (self._includeroots and
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'.' not in self._includeroots and
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dir not in self._includeroots and
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dir not in self._includedirs and
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not any(parent in self._includeroots
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for parent in util.finddirs(dir))):
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return False
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return (not self._fileroots or
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'.' in self._fileroots or
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dir in self._fileroots or
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dir in self._dirs or
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any(parentdir in self._fileroots
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for parentdir in util.finddirs(dir)))
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def exact(self, f):
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'''Returns True if f is in .files().'''
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return f in self._fileroots
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def anypats(self):
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'''Matcher uses patterns or include/exclude.'''
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return self._anypats
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def always(self):
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'''Matcher will match everything and .files() will be empty
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- optimization might be possible and necessary.'''
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return self._always
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def ispartial(self):
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'''True if the matcher won't always match.
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Although it's just the inverse of _always in this implementation,
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an extenion such as narrowhg might make it return something
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slightly different.'''
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return not self._always
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def isexact(self):
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return self.matchfn == self.exact
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def prefix(self):
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return not self.always() and not self.isexact() and not self.anypats()
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def _normalize(self, patterns, default, root, cwd, auditor):
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'''Convert 'kind:pat' from the patterns list to tuples with kind and
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normalized and rooted patterns and with listfiles expanded.'''
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kindpats = []
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for kind, pat in [_patsplit(p, default) for p in patterns]:
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if kind in ('glob', 'relpath'):
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pat = pathutil.canonpath(root, cwd, pat, auditor)
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elif kind in ('relglob', 'path'):
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pat = util.normpath(pat)
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elif kind in ('listfile', 'listfile0'):
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try:
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files = util.readfile(pat)
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if kind == 'listfile0':
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files = files.split('\0')
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else:
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files = files.splitlines()
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files = [f for f in files if f]
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except EnvironmentError:
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raise util.Abort(_("unable to read file list (%s)") % pat)
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for k, p, source in self._normalize(files, default, root, cwd,
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auditor):
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kindpats.append((k, p, pat))
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continue
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elif kind == 'include':
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try:
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includepats = readpatternfile(pat, self._warn)
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for k, p, source in self._normalize(includepats, default,
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root, cwd, auditor):
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kindpats.append((k, p, source or pat))
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except util.Abort, inst:
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raise util.Abort('%s: %s' % (pat, inst[0]))
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except IOError, inst:
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if self._warn:
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self._warn(_("skipping unreadable pattern file "
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"'%s': %s\n") % (pat, inst.strerror))
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continue
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# else: re or relre - which cannot be normalized
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kindpats.append((kind, pat, ''))
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return kindpats
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def exact(root, cwd, files, badfn=None):
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return match(root, cwd, files, exact=True, badfn=badfn)
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def always(root, cwd):
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return match(root, cwd, [])
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def badmatch(match, badfn):
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"""Make a copy of the given matcher, replacing its bad method with the given
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one.
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"""
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m = copy.copy(match)
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m.bad = badfn
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return m
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class narrowmatcher(match):
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"""Adapt a matcher to work on a subdirectory only.
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The paths are remapped to remove/insert the path as needed:
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>>> m1 = match('root', '', ['a.txt', 'sub/b.txt'])
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>>> m2 = narrowmatcher('sub', m1)
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>>> bool(m2('a.txt'))
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False
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>>> bool(m2('b.txt'))
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True
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>>> bool(m2.matchfn('a.txt'))
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False
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>>> bool(m2.matchfn('b.txt'))
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True
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>>> m2.files()
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['b.txt']
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>>> m2.exact('b.txt')
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True
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>>> util.pconvert(m2.rel('b.txt'))
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'sub/b.txt'
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>>> def bad(f, msg):
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... print "%s: %s" % (f, msg)
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>>> m1.bad = bad
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>>> m2.bad('x.txt', 'No such file')
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sub/x.txt: No such file
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>>> m2.abs('c.txt')
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'sub/c.txt'
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"""
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def __init__(self, path, matcher):
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self._root = matcher._root
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self._cwd = matcher._cwd
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self._path = path
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self._matcher = matcher
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self._always = matcher._always
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self._pathrestricted = matcher._pathrestricted
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self._files = [f[len(path) + 1:] for f in matcher._files
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if f.startswith(path + "/")]
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# If the parent repo had a path to this subrepo and no patterns are
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# specified, this submatcher always matches.
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if not self._always and not matcher._anypats:
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self._always = any(f == path for f in matcher._files)
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self._anypats = matcher._anypats
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self.matchfn = lambda fn: matcher.matchfn(self._path + "/" + fn)
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self._fileroots = set(self._files)
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def abs(self, f):
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return self._matcher.abs(self._path + "/" + f)
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def bad(self, f, msg):
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self._matcher.bad(self._path + "/" + f, msg)
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def rel(self, f):
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return self._matcher.rel(self._path + "/" + f)
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class icasefsmatcher(match):
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"""A matcher for wdir on case insensitive filesystems, which normalizes the
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given patterns to the case in the filesystem.
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"""
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def __init__(self, root, cwd, patterns, include, exclude, default, auditor,
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ctx, listsubrepos=False, badfn=None):
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init = super(icasefsmatcher, self).__init__
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self._dsnormalize = ctx.repo().dirstate.normalize
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init(root, cwd, patterns, include, exclude, default, auditor=auditor,
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ctx=ctx, listsubrepos=listsubrepos, badfn=badfn)
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# m.exact(file) must be based off of the actual user input, otherwise
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# inexact case matches are treated as exact, and not noted without -v.
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if self._files:
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self._fileroots = set(_roots(self._kp))
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def _normalize(self, patterns, default, root, cwd, auditor):
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self._kp = super(icasefsmatcher, self)._normalize(patterns, default,
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root, cwd, auditor)
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kindpats = []
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for kind, pats, source in self._kp:
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if kind not in ('re', 'relre'): # regex can't be normalized
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pats = self._dsnormalize(pats)
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kindpats.append((kind, pats, source))
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return kindpats
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def patkind(pattern, default=None):
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'''If pattern is 'kind:pat' with a known kind, return kind.'''
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return _patsplit(pattern, default)[0]
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def _patsplit(pattern, default):
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"""Split a string into the optional pattern kind prefix and the actual
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pattern."""
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if ':' in pattern:
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kind, pat = pattern.split(':', 1)
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if kind in ('re', 'glob', 'path', 'relglob', 'relpath', 'relre',
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'listfile', 'listfile0', 'set', 'include', 'subinclude'):
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return kind, pat
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return default, pattern
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def _globre(pat):
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r'''Convert an extended glob string to a regexp string.
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>>> print _globre(r'?')
|
|
|
.
|
|
|
>>> print _globre(r'*')
|
|
|
[^/]*
|
|
|
>>> print _globre(r'**')
|
|
|
.*
|
|
|
>>> print _globre(r'**/a')
|
|
|
(?:.*/)?a
|
|
|
>>> print _globre(r'a/**/b')
|
|
|
a\/(?:.*/)?b
|
|
|
>>> print _globre(r'[a*?!^][^b][!c]')
|
|
|
[a*?!^][\^b][^c]
|
|
|
>>> print _globre(r'{a,b}')
|
|
|
(?:a|b)
|
|
|
>>> print _globre(r'.\*\?')
|
|
|
\.\*\?
|
|
|
'''
|
|
|
i, n = 0, len(pat)
|
|
|
res = ''
|
|
|
group = 0
|
|
|
escape = util.re.escape
|
|
|
def peek():
|
|
|
return i < n and pat[i]
|
|
|
while i < n:
|
|
|
c = pat[i]
|
|
|
i += 1
|
|
|
if c not in '*?[{},\\':
|
|
|
res += escape(c)
|
|
|
elif c == '*':
|
|
|
if peek() == '*':
|
|
|
i += 1
|
|
|
if peek() == '/':
|
|
|
i += 1
|
|
|
res += '(?:.*/)?'
|
|
|
else:
|
|
|
res += '.*'
|
|
|
else:
|
|
|
res += '[^/]*'
|
|
|
elif c == '?':
|
|
|
res += '.'
|
|
|
elif c == '[':
|
|
|
j = i
|
|
|
if j < n and pat[j] in '!]':
|
|
|
j += 1
|
|
|
while j < n and pat[j] != ']':
|
|
|
j += 1
|
|
|
if j >= n:
|
|
|
res += '\\['
|
|
|
else:
|
|
|
stuff = pat[i:j].replace('\\','\\\\')
|
|
|
i = j + 1
|
|
|
if stuff[0] == '!':
|
|
|
stuff = '^' + stuff[1:]
|
|
|
elif stuff[0] == '^':
|
|
|
stuff = '\\' + stuff
|
|
|
res = '%s[%s]' % (res, stuff)
|
|
|
elif c == '{':
|
|
|
group += 1
|
|
|
res += '(?:'
|
|
|
elif c == '}' and group:
|
|
|
res += ')'
|
|
|
group -= 1
|
|
|
elif c == ',' and group:
|
|
|
res += '|'
|
|
|
elif c == '\\':
|
|
|
p = peek()
|
|
|
if p:
|
|
|
i += 1
|
|
|
res += escape(p)
|
|
|
else:
|
|
|
res += escape(c)
|
|
|
else:
|
|
|
res += escape(c)
|
|
|
return res
|
|
|
|
|
|
def _regex(kind, pat, globsuffix):
|
|
|
'''Convert a (normalized) pattern of any kind into a regular expression.
|
|
|
globsuffix is appended to the regexp of globs.'''
|
|
|
if not pat:
|
|
|
return ''
|
|
|
if kind == 're':
|
|
|
return pat
|
|
|
if kind == 'path':
|
|
|
return '^' + util.re.escape(pat) + '(?:/|$)'
|
|
|
if kind == 'relglob':
|
|
|
return '(?:|.*/)' + _globre(pat) + globsuffix
|
|
|
if kind == 'relpath':
|
|
|
return util.re.escape(pat) + '(?:/|$)'
|
|
|
if kind == 'relre':
|
|
|
if pat.startswith('^'):
|
|
|
return pat
|
|
|
return '.*' + pat
|
|
|
return _globre(pat) + globsuffix
|
|
|
|
|
|
def _buildmatch(ctx, kindpats, globsuffix, listsubrepos, root):
|
|
|
'''Return regexp string and a matcher function for kindpats.
|
|
|
globsuffix is appended to the regexp of globs.'''
|
|
|
matchfuncs = []
|
|
|
|
|
|
subincludes, kindpats = _expandsubinclude(kindpats, root)
|
|
|
if subincludes:
|
|
|
def matchsubinclude(f):
|
|
|
for prefix, mf in subincludes:
|
|
|
if f.startswith(prefix) and mf(f[len(prefix):]):
|
|
|
return True
|
|
|
return False
|
|
|
matchfuncs.append(matchsubinclude)
|
|
|
|
|
|
fset, kindpats = _expandsets(kindpats, ctx, listsubrepos)
|
|
|
if fset:
|
|
|
matchfuncs.append(fset.__contains__)
|
|
|
|
|
|
regex = ''
|
|
|
if kindpats:
|
|
|
regex, mf = _buildregexmatch(kindpats, globsuffix)
|
|
|
matchfuncs.append(mf)
|
|
|
|
|
|
if len(matchfuncs) == 1:
|
|
|
return regex, matchfuncs[0]
|
|
|
else:
|
|
|
return regex, lambda f: any(mf(f) for mf in matchfuncs)
|
|
|
|
|
|
def _buildregexmatch(kindpats, globsuffix):
|
|
|
"""Build a match function from a list of kinds and kindpats,
|
|
|
return regexp string and a matcher function."""
|
|
|
try:
|
|
|
regex = '(?:%s)' % '|'.join([_regex(k, p, globsuffix)
|
|
|
for (k, p, s) in kindpats])
|
|
|
if len(regex) > 20000:
|
|
|
raise OverflowError
|
|
|
return regex, _rematcher(regex)
|
|
|
except OverflowError:
|
|
|
# We're using a Python with a tiny regex engine and we
|
|
|
# made it explode, so we'll divide the pattern list in two
|
|
|
# until it works
|
|
|
l = len(kindpats)
|
|
|
if l < 2:
|
|
|
raise
|
|
|
regexa, a = _buildregexmatch(kindpats[:l//2], globsuffix)
|
|
|
regexb, b = _buildregexmatch(kindpats[l//2:], globsuffix)
|
|
|
return regex, lambda s: a(s) or b(s)
|
|
|
except re.error:
|
|
|
for k, p, s in kindpats:
|
|
|
try:
|
|
|
_rematcher('(?:%s)' % _regex(k, p, globsuffix))
|
|
|
except re.error:
|
|
|
if s:
|
|
|
raise util.Abort(_("%s: invalid pattern (%s): %s") %
|
|
|
(s, k, p))
|
|
|
else:
|
|
|
raise util.Abort(_("invalid pattern (%s): %s") % (k, p))
|
|
|
raise util.Abort(_("invalid pattern"))
|
|
|
|
|
|
def _roots(kindpats):
|
|
|
'''return roots and exact explicitly listed files from patterns
|
|
|
|
|
|
>>> _roots([('glob', 'g/*', ''), ('glob', 'g', ''), ('glob', 'g*', '')])
|
|
|
['g', 'g', '.']
|
|
|
>>> _roots([('relpath', 'r', ''), ('path', 'p/p', ''), ('path', '', '')])
|
|
|
['r', 'p/p', '.']
|
|
|
>>> _roots([('relglob', 'rg*', ''), ('re', 're/', ''), ('relre', 'rr', '')])
|
|
|
['.', '.', '.']
|
|
|
'''
|
|
|
r = []
|
|
|
for kind, pat, source in kindpats:
|
|
|
if kind == 'glob': # find the non-glob prefix
|
|
|
root = []
|
|
|
for p in pat.split('/'):
|
|
|
if '[' in p or '{' in p or '*' in p or '?' in p:
|
|
|
break
|
|
|
root.append(p)
|
|
|
r.append('/'.join(root) or '.')
|
|
|
elif kind in ('relpath', 'path'):
|
|
|
r.append(pat or '.')
|
|
|
else: # relglob, re, relre
|
|
|
r.append('.')
|
|
|
return r
|
|
|
|
|
|
def _anypats(kindpats):
|
|
|
for kind, pat, source in kindpats:
|
|
|
if kind in ('glob', 're', 'relglob', 'relre', 'set'):
|
|
|
return True
|
|
|
|
|
|
_commentre = None
|
|
|
|
|
|
def readpatternfile(filepath, warn):
|
|
|
'''parse a pattern file, returning a list of
|
|
|
patterns. These patterns should be given to compile()
|
|
|
to be validated and converted into a match function.
|
|
|
|
|
|
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'''
|
|
|
|
|
|
syntaxes = {'re': 'relre:', 'regexp': 'relre:', 'glob': 'relglob:',
|
|
|
'include': 'include', 'subinclude': 'subinclude'}
|
|
|
syntax = 'relre:'
|
|
|
patterns = []
|
|
|
|
|
|
fp = open(filepath)
|
|
|
for line in fp:
|
|
|
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:
|
|
|
if warn:
|
|
|
warn(_("%s: ignoring invalid syntax '%s'\n") %
|
|
|
(filepath, s))
|
|
|
continue
|
|
|
|
|
|
linesyntax = syntax
|
|
|
for s, rels in syntaxes.iteritems():
|
|
|
if line.startswith(rels):
|
|
|
linesyntax = rels
|
|
|
line = line[len(rels):]
|
|
|
break
|
|
|
elif line.startswith(s+':'):
|
|
|
linesyntax = rels
|
|
|
line = line[len(s) + 1:]
|
|
|
break
|
|
|
patterns.append(linesyntax + line)
|
|
|
fp.close()
|
|
|
return patterns
|
|
|
|
