|
|
# match.py - filename matching
|
|
|
#
|
|
|
# Copyright 2008, 2009 Matt Mackall <mpm@selenic.com> and others
|
|
|
#
|
|
|
# This software may be used and distributed according to the terms of the
|
|
|
# GNU General Public License version 2 or any later version.
|
|
|
|
|
|
import re
|
|
|
import util
|
|
|
from i18n import _
|
|
|
|
|
|
class match(object):
|
|
|
def __init__(self, root, cwd, patterns, include=[], exclude=[],
|
|
|
default='glob', exact=False, auditor=None):
|
|
|
"""build an object to match a set of file patterns
|
|
|
|
|
|
arguments:
|
|
|
root - the canonical root of the tree you're matching against
|
|
|
cwd - the current working directory, if relevant
|
|
|
patterns - patterns to find
|
|
|
include - patterns to include
|
|
|
exclude - patterns to exclude
|
|
|
default - if a pattern in names has no explicit type, assume this one
|
|
|
exact - patterns are actually literals
|
|
|
|
|
|
a pattern is one of:
|
|
|
'glob:<glob>' - a glob relative to cwd
|
|
|
're:<regexp>' - a regular expression
|
|
|
'path:<path>' - a path relative to canonroot
|
|
|
'relglob:<glob>' - an unrooted glob (*.c matches C files in all dirs)
|
|
|
'relpath:<path>' - a path relative to cwd
|
|
|
'relre:<regexp>' - a regexp that needn't match the start of a name
|
|
|
'<something>' - a pattern of the specified default type
|
|
|
"""
|
|
|
|
|
|
self._root = root
|
|
|
self._cwd = cwd
|
|
|
self._files = []
|
|
|
self._anypats = bool(include or exclude)
|
|
|
|
|
|
if include:
|
|
|
im = _buildmatch(_normalize(include, 'glob', root, cwd, auditor),
|
|
|
'(?:/|$)')
|
|
|
if exclude:
|
|
|
em = _buildmatch(_normalize(exclude, 'glob', root, cwd, auditor),
|
|
|
'(?:/|$)')
|
|
|
if exact:
|
|
|
self._files = patterns
|
|
|
pm = self.exact
|
|
|
elif patterns:
|
|
|
pats = _normalize(patterns, default, root, cwd, auditor)
|
|
|
self._files = _roots(pats)
|
|
|
self._anypats = self._anypats or _anypats(pats)
|
|
|
pm = _buildmatch(pats, '$')
|
|
|
|
|
|
if patterns or exact:
|
|
|
if include:
|
|
|
if exclude:
|
|
|
m = lambda f: im(f) and not em(f) and pm(f)
|
|
|
else:
|
|
|
m = lambda f: im(f) and pm(f)
|
|
|
else:
|
|
|
if exclude:
|
|
|
m = lambda f: not em(f) and pm(f)
|
|
|
else:
|
|
|
m = pm
|
|
|
else:
|
|
|
if include:
|
|
|
if exclude:
|
|
|
m = lambda f: im(f) and not em(f)
|
|
|
else:
|
|
|
m = im
|
|
|
else:
|
|
|
if exclude:
|
|
|
m = lambda f: not em(f)
|
|
|
else:
|
|
|
m = lambda f: True
|
|
|
|
|
|
self.matchfn = m
|
|
|
self._fmap = set(self._files)
|
|
|
|
|
|
def __call__(self, fn):
|
|
|
return self.matchfn(fn)
|
|
|
def __iter__(self):
|
|
|
for f in self._files:
|
|
|
yield f
|
|
|
def bad(self, f, msg):
|
|
|
'''callback for each explicit file that can't be
|
|
|
found/accessed, with an error message
|
|
|
'''
|
|
|
pass
|
|
|
def dir(self, f):
|
|
|
pass
|
|
|
def missing(self, f):
|
|
|
pass
|
|
|
def exact(self, f):
|
|
|
return f in self._fmap
|
|
|
def rel(self, f):
|
|
|
return util.pathto(self._root, self._cwd, f)
|
|
|
def files(self):
|
|
|
return self._files
|
|
|
def anypats(self):
|
|
|
return self._anypats
|
|
|
|
|
|
class exact(match):
|
|
|
def __init__(self, root, cwd, files):
|
|
|
match.__init__(self, root, cwd, files, exact = True)
|
|
|
|
|
|
class always(match):
|
|
|
def __init__(self, root, cwd):
|
|
|
match.__init__(self, root, cwd, [])
|
|
|
|
|
|
class narrowmatcher(match):
|
|
|
"""Adapt a matcher to work on a subdirectory only.
|
|
|
|
|
|
The paths are remapped to remove/insert the path as needed:
|
|
|
|
|
|
>>> m1 = match('root', '', ['a.txt', 'sub/b.txt'])
|
|
|
>>> m2 = narrowmatcher('sub', m1)
|
|
|
>>> bool(m2('a.txt'))
|
|
|
False
|
|
|
>>> bool(m2('b.txt'))
|
|
|
True
|
|
|
>>> bool(m2.matchfn('a.txt'))
|
|
|
False
|
|
|
>>> bool(m2.matchfn('b.txt'))
|
|
|
True
|
|
|
>>> m2.files()
|
|
|
['b.txt']
|
|
|
>>> m2.exact('b.txt')
|
|
|
True
|
|
|
"""
|
|
|
|
|
|
def __init__(self, path, matcher):
|
|
|
self._path = path
|
|
|
self._matcher = matcher
|
|
|
|
|
|
self._files = [f[len(path) + 1:] for f in matcher._files
|
|
|
if f.startswith(path + "/")]
|
|
|
self._anypats = matcher._anypats
|
|
|
self.matchfn = lambda fn: matcher.matchfn(self._path + "/" + fn)
|
|
|
self._fmap = set(self._files)
|
|
|
|
|
|
def patkind(pat):
|
|
|
return _patsplit(pat, None)[0]
|
|
|
|
|
|
def _patsplit(pat, default):
|
|
|
"""Split a string into an optional pattern kind prefix and the
|
|
|
actual pattern."""
|
|
|
if ':' in pat:
|
|
|
kind, val = pat.split(':', 1)
|
|
|
if kind in ('re', 'glob', 'path', 'relglob', 'relpath', 'relre'):
|
|
|
return kind, val
|
|
|
return default, pat
|
|
|
|
|
|
def _globre(pat):
|
|
|
"convert a glob pattern into a regexp"
|
|
|
i, n = 0, len(pat)
|
|
|
res = ''
|
|
|
group = 0
|
|
|
escape = 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
|
|
|
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, name, tail):
|
|
|
'''convert a pattern into a regular expression'''
|
|
|
if not name:
|
|
|
return ''
|
|
|
if kind == 're':
|
|
|
return name
|
|
|
elif kind == 'path':
|
|
|
return '^' + re.escape(name) + '(?:/|$)'
|
|
|
elif kind == 'relglob':
|
|
|
return '(?:|.*/)' + _globre(name) + tail
|
|
|
elif kind == 'relpath':
|
|
|
return re.escape(name) + '(?:/|$)'
|
|
|
elif kind == 'relre':
|
|
|
if name.startswith('^'):
|
|
|
return name
|
|
|
return '.*' + name
|
|
|
return _globre(name) + tail
|
|
|
|
|
|
def _buildmatch(pats, tail):
|
|
|
"""build a matching function from a set of patterns"""
|
|
|
try:
|
|
|
pat = '(?:%s)' % '|'.join([_regex(k, p, tail) for (k, p) in pats])
|
|
|
if len(pat) > 20000:
|
|
|
raise OverflowError()
|
|
|
return re.compile(pat).match
|
|
|
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(pats)
|
|
|
if l < 2:
|
|
|
raise
|
|
|
a, b = _buildmatch(pats[:l//2], tail), _buildmatch(pats[l//2:], tail)
|
|
|
return lambda s: a(s) or b(s)
|
|
|
except re.error:
|
|
|
for k, p in pats:
|
|
|
try:
|
|
|
re.compile('(?:%s)' % _regex(k, p, tail))
|
|
|
except re.error:
|
|
|
raise util.Abort(_("invalid pattern (%s): %s") % (k, p))
|
|
|
raise util.Abort(_("invalid pattern"))
|
|
|
|
|
|
def _normalize(names, default, root, cwd, auditor):
|
|
|
pats = []
|
|
|
for kind, name in [_patsplit(p, default) for p in names]:
|
|
|
if kind in ('glob', 'relpath'):
|
|
|
name = util.canonpath(root, cwd, name, auditor)
|
|
|
elif kind in ('relglob', 'path'):
|
|
|
name = util.normpath(name)
|
|
|
|
|
|
pats.append((kind, name))
|
|
|
return pats
|
|
|
|
|
|
def _roots(patterns):
|
|
|
r = []
|
|
|
for kind, name in patterns:
|
|
|
if kind == 'glob': # find the non-glob prefix
|
|
|
root = []
|
|
|
for p in name.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(name or '.')
|
|
|
elif kind == 'relglob':
|
|
|
r.append('.')
|
|
|
return r
|
|
|
|
|
|
def _anypats(patterns):
|
|
|
for kind, name in patterns:
|
|
|
if kind in ('glob', 're', 'relglob', 'relre'):
|
|
|
return True
|
|
|
|
