changectx: increase perf of walk function
When running 'hg cat -r . <file>' it was doing an expensive ctx.walk(m) which
applied the regex to every file in the manifest.
This changes changectx.walk to iterate over just the files in the regex, if no
other patterns are specified. This cuts hg cat time by 50% in our repo and
probably benefits a few other commands as well.
# interhg.py - interhg
#
# Copyright 2007 OHASHI Hideya <ohachige@gmail.com>
#
# Contributor(s):
# Edward Lee <edward.lee@engineering.uiuc.edu>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
'''expand expressions into changelog and summaries
This extension allows the use of a special syntax in summaries, which
will be automatically expanded into links or any other arbitrary
expression, much like InterWiki does.
A few example patterns (link to bug tracking, etc.) that may be used
in your hgrc::
[interhg]
issues = s!issue(\\d+)!<a href="http://bts/issue\\1">issue\\1</a>!
bugzilla = s!((?:bug|b=|(?=#?\\d{4,}))(?:\\s*#?)(\\d+))!<a..=\\2">\\1</a>!i
boldify = s!(^|\\s)#(\\d+)\\b! <b>#\\2</b>!
'''
import re
from mercurial.hgweb import hgweb_mod
from mercurial import templatefilters, extensions
from mercurial.i18n import _
testedwith = 'internal'
interhg_table = []
def uisetup(ui):
orig_escape = templatefilters.filters["escape"]
def interhg_escape(x):
escstr = orig_escape(x)
for regexp, format in interhg_table:
escstr = regexp.sub(format, escstr)
return escstr
templatefilters.filters["escape"] = interhg_escape
def interhg_refresh(orig, self, *args, **kwargs):
interhg_table[:] = []
for key, pattern in self.repo.ui.configitems('interhg'):
# grab the delimiter from the character after the "s"
unesc = pattern[1]
delim = re.escape(unesc)
# identify portions of the pattern, taking care to avoid escaped
# delimiters. the replace format and flags are optional, but delimiters
# are required.
match = re.match(r'^s%s(.+)(?:(?<=\\\\)|(?<!\\))%s(.*)%s([ilmsux])*$'
% (delim, delim, delim), pattern)
if not match:
self.repo.ui.warn(_("interhg: invalid pattern for %s: %s\n")
% (key, pattern))
continue
# we need to unescape the delimiter for regexp and format
delim_re = re.compile(r'(?<!\\)\\%s' % delim)
regexp = delim_re.sub(unesc, match.group(1))
format = delim_re.sub(unesc, match.group(2))
# the pattern allows for 6 regexp flags, so set them if necessary
flagin = match.group(3)
flags = 0
if flagin:
for flag in flagin.upper():
flags |= re.__dict__[flag]
try:
regexp = re.compile(regexp, flags)
interhg_table.append((regexp, format))
except re.error:
self.repo.ui.warn(_("interhg: invalid regexp for %s: %s\n")
% (key, regexp))
return orig(self, *args, **kwargs)
extensions.wrapfunction(hgweb_mod.hgweb, 'refresh', interhg_refresh)