mercurial/ignore.py
author Edouard Gomez <ed.gomez@free.fr>
Sat, 12 May 2007 00:41:30 +0200
changeset 4865 439e2f2fde42
parent 4610 b43f17691ae6
child 5029 ac97e065cfc7
permissions -rw-r--r--
Fix inconsistency for the stream_out capability in hgweb During some experiments of mine, the uncompressed cloning could not be enabled for hgweb.cgi nor hgwebdir.cgi though the server claimed to be stream_out capable. The only solution was to enable it using the user's .hgrc file. This solution is not acceptable when publishing the repos through an HTTP server because the CGI runs as a www dedicated user whose's home hgrc file may not be accessible to users publishing their repos through their userdir. For such cases we could end up with this typical debug output: hg --debug clone --uncompressed http://server/hg/project destination directory: project sending capabilities command capabilities: lookup changegroupsubset stream=1 unbundle=HG10GZ,HG10BZ,HG10UN sending stream_out command abort: operation forbidden by server The error lies in the fact the hgweb object defines new accessors to the repo configuration that trust things by default (untrusted=True) but the streamclone:stream_out function uses the usual accessors to the repo.ui object, which do not trust by default (untrusted=False) Fix this inconsistency, adding a new parameter to the stream_out function. hgweb then forces a "trust by default" behavior.

# 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 in syntaxes.values():
                    if line.startswith(s):
                        pat = line
                        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


    '''default match function used by dirstate and
    localrepository.  this honours the repository .hgignore file
    and any other files specified in the [ui] section of .hgrc.'''