hgweb.cgi

util._matcher: speed up regexp matching.

In 4babaa52badf, Benoit made a change that substantially slows matching
when a big .hgignore file is in play, because it calls into the regexp
matching engine potentially hundreds of times per file to be matched.

I've partly rolled back his change, so that we only call into the matcher
once per file, but preserved the ability to report a meaningful error
message if there's a syntax error in the regexp.

#!/usr/bin/env python
#
# An example CGI script to use hgweb, edit as necessary

# send python tracebacks to the browser if an error occurs:
import cgitb
cgitb.enable()

# adjust python path if not a system-wide install:
#import sys
#sys.path.insert(0, "/path/to/python/lib")

# If you'd like to serve pages with UTF-8 instead of your default
# locale charset, you can do so by uncommenting the following lines.
# Note that this will cause your .hgrc files to be interpreted in
# UTF-8 and all your repo files to be displayed using UTF-8.
#
#import os
#os.environ["HGENCODING"] = "UTF-8"

from mercurial.hgweb.hgweb_mod import hgweb
from mercurial.hgweb.request import wsgiapplication
import mercurial.hgweb.wsgicgi as wsgicgi

def make_web_app():
    return hgweb("/path/to/repo", "repository name")

wsgicgi.launch(wsgiapplication(make_web_app))