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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, incorporated herein by reference.
from i18n import _
import util
def _parselines(fp):
for line in fp:
if not line.endswith('\n'):
line += '\n'
escape = False
for i in xrange(len(line)):
if escape: escape = False
elif line[i] == '\\': escape = True
elif line[i] == '#': break
line = line[:i].rstrip()
if line:
yield line
def ignore(root, files, warn):
'''return the contents of .hgignore files as a list of patterns.
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'''
syntaxes = {'re': 'relre:', 'regexp': 'relre:', 'glob': 'relglob:'}
pats = {}
for f in files:
try:
pats[f] = []
fp = open(f)
syntax = 'relre:'
for line in _parselines(fp):
if line.startswith('syntax:'):
s = line[7:].strip()
try:
syntax = syntaxes[s]
except KeyError:
warn(_("%s: ignoring invalid syntax '%s'\n") % (f, s))
continue
pat = syntax + line
for s, rels in syntaxes.items():
if line.startswith(rels):
pat = line
break
elif line.startswith(s+':'):
pat = rels + line[len(s)+1:]
break
pats[f].append(pat)
except IOError, inst:
if f != files[0]:
warn(_("skipping unreadable ignore file '%s': %s\n") %
(f, inst.strerror))
allpats = []
[allpats.extend(patlist) for patlist in pats.values()]
if not allpats:
return util.never
try:
files, ignorefunc, anypats = (
util.matcher(root, inc=allpats, src='.hgignore'))
except util.Abort:
# Re-raise an exception where the src is the right file
for f, patlist in pats.items():
files, ignorefunc, anypats = (
util.matcher(root, inc=patlist, src=f))
return ignorefunc
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