# $Hg$

from mercurial.i18n import _

from mercurial import util

import re

    '''Important: returns False on success, True on failure.'''

    # name of keyword encode filter:

    kwencodefilter = 'hgkwencode'

    def wwritekw(ui, repo, f, text):

        '''Writes text with kwupdates keywords to f in working directory.'''

        ui.note(_('expanding keywords in %s\n' % f))

    #   absfile = repo.wjoin(f)

    #   util.copyfile(absfile, absfile+'.kwbak')

        repo.wfile(f, 'w').write(text)

    # only check files that have hgkwencode assigned as encode filter

    files = []

    # python2.4: files = set()

    for pat, cmd in repo.ui.configitems('encode'):

        if cmd.endswith(kwencodefilter):

            mf = util.matcher(repo.root, '', [pat], [], [])[1]

            for candidate in candidates:

                if mf(candidate) and candidate not in files:

                    files.append(candidate)

                # python2.4:

                # if mf(candidate): files.add(candidate)

    if not files: # nothing to do

        return False

    user = util.shortuser(user)

    date = util.datestr(date=date, format=util.defaultdateformats[2])

                                               # %Y-%m-%d %H:%M

    # collect filenames that were changed by hg update

    kwupdates = []

    for f in files:

        text = repo.wfile(f).read()

            wwritekw(ui, repo, f, text)

            kwupdates.append(f)

        elif not update:

            if kwct:

                wwritekw(ui, repo, f, text)

    if kwupdates:

        # cheat hg to believe that updated files were not modified

        repo.dirstate.update(kwupdates, 'n')