revlog: fix revlogio.packentry corner case
We want to store version information about the revlog in the first
entry of its index. The code in packentry was using some heuristics
to detect whether this was the first entry, but these heuristics could
fail in some cases (e.g. rev 0 was empty; rev 1 descends directly from
the nullid and is stored as a delta).
We now give the revision number to packentry to avoid heuristics.
# 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