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comparison mercurial/ignore.py @ 4610:b43f17691ae6

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dirstate: move ignore to its own file
author Matt Mackall <mpm@selenic.com>
date Mon, 18 Jun 2007 13:24:34 -0500
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children ac97e065cfc7
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4609:220211b88656 4610:b43f17691ae6
1 # ignore.py - ignored file handling for mercurial
2 #
3 # Copyright 2007 Matt Mackall <mpm@selenic.com>
4 #
5 # This software may be used and distributed according to the terms
6 # of the GNU General Public License, incorporated herein by reference.
7
8 from i18n import _
9 import util
10
11 def _parselines(fp):
12 for line in fp:
13 if not line.endswith('\n'):
14 line += '\n'
15 escape = False
16 for i in xrange(len(line)):
17 if escape: escape = False
18 elif line[i] == '\\': escape = True
19 elif line[i] == '#': break
20 line = line[:i].rstrip()
21 if line:
22 yield line
23
24 def ignore(root, files, warn):
25 '''return the contents of .hgignore files as a list of patterns.
26
27 the files parsed for patterns include:
28 .hgignore in the repository root
29 any additional files specified in the [ui] section of ~/.hgrc
30
31 trailing white space is dropped.
32 the escape character is backslash.
33 comments start with #.
34 empty lines are skipped.
35
36 lines can be of the following formats:
37
38 syntax: regexp # defaults following lines to non-rooted regexps
39 syntax: glob # defaults following lines to non-rooted globs
40 re:pattern # non-rooted regular expression
41 glob:pattern # non-rooted glob
42 pattern # pattern of the current default type'''
43
44 syntaxes = {'re': 'relre:', 'regexp': 'relre:', 'glob': 'relglob:'}
45 pats = {}
46 for f in files:
47 try:
48 pats[f] = []
49 fp = open(f)
50 syntax = 'relre:'
51 for line in _parselines(fp):
52 if line.startswith('syntax:'):
53 s = line[7:].strip()
54 try:
55 syntax = syntaxes[s]
56 except KeyError:
57 warn(_("%s: ignoring invalid syntax '%s'\n") % (f, s))
58 continue
59 pat = syntax + line
60 for s in syntaxes.values():
61 if line.startswith(s):
62 pat = line
63 break
64 pats[f].append(pat)
65 except IOError, inst:
66 if f != files[0]:
67 warn(_("skipping unreadable ignore file '%s': %s\n") %
68 (f, inst.strerror))
69
70 allpats = []
71 [allpats.extend(patlist) for patlist in pats.values()]
72 if not allpats:
73 return util.never
74
75 try:
76 files, ignorefunc, anypats = (
77 util.matcher(root, inc=allpats, src='.hgignore'))
78 except util.Abort:
79 # Re-raise an exception where the src is the right file
80 for f, patlist in pats.items():
81 files, ignorefunc, anypats = (
82 util.matcher(root, inc=patlist, src=f))
83
84 return ignorefunc
85
86
87 '''default match function used by dirstate and
88 localrepository. this honours the repository .hgignore file
89 and any other files specified in the [ui] section of .hgrc.'''
90