view hgext/convert/darcs.py @ 9021:2ccb527c7b1a

gendoc: fix localization of help topic

When a topic provides a callable method for its text, most likely
this text will be generated from different parts, so it does not
make sense to apply gettext on the whole result, rather the method
should provide translation by itself.

This is the case with the extensions topic, which triggers a double
gettext call, making the ASCII codec fail when it encounters 8 bit
characters, and prevents the documentation from being built.

# darcs.py - darcs support for the convert extension
#
#  Copyright 2007-2009 Matt Mackall <[e-mail]> and others
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2, incorporated herein by reference.

from common import NoRepo, checktool, commandline, commit, converter_source
from mercurial.i18n import _
from mercurial import util
import os, shutil, tempfile

# The naming drift of ElementTree is fun!

try: from xml.etree.cElementTree import ElementTree
except ImportError:
    try: from xml.etree.ElementTree import ElementTree
    except ImportError:
        try: from elementtree.cElementTree import ElementTree
        except ImportError:
            try: from elementtree.ElementTree import ElementTree
            except ImportError: ElementTree = None


class darcs_source(converter_source, commandline):
    def __init__(self, ui, path, rev=None):
        converter_source.__init__(self, ui, path, rev=rev)
        commandline.__init__(self, ui, 'darcs')

        # check for _darcs, ElementTree, _darcs/inventory so that we can
        # easily skip test-convert-darcs if ElementTree is not around
        if not os.path.exists(os.path.join(path, '_darcs', 'inventories')):
            raise NoRepo("%s does not look like a darcs repo" % path)

        if not os.path.exists(os.path.join(path, '_darcs')):
            raise NoRepo("%s does not look like a darcs repo" % path)

        checktool('darcs')

        if ElementTree is None:
            raise util.Abort(_("Python ElementTree module is not available"))

        self.path = os.path.realpath(path)

        self.lastrev = None
        self.changes = {}
        self.parents = {}
        self.tags = {}

    def before(self):
        self.tmppath = tempfile.mkdtemp(
            prefix='convert-' + os.path.basename(self.path) + '-')
        output, status = self.run('init', repodir=self.tmppath)
        self.checkexit(status)

        tree = self.xml('changes', xml_output=True, summary=True,
                        repodir=self.path)
        tagname = None
        child = None
        for elt in tree.findall('patch'):
            node = elt.get('hash')
            name = elt.findtext('name', '')
            if name.startswith('TAG '):
                tagname = name[4:].strip()
            elif tagname is not None:
                self.tags[tagname] = node
                tagname = None
            self.changes[node] = elt
            self.parents[child] = [node]
            child = node
        self.parents[child] = []

    def after(self):
        self.ui.debug(_('cleaning up %s\n') % self.tmppath)
        shutil.rmtree(self.tmppath, ignore_errors=True)

    def xml(self, cmd, **kwargs):
        etree = ElementTree()
        fp = self._run(cmd, **kwargs)
        etree.parse(fp)
        self.checkexit(fp.close())
        return etree.getroot()

    def getheads(self):
        return self.parents[None]

    def getcommit(self, rev):
        elt = self.changes[rev]
        date = util.strdate(elt.get('local_date'), '%a %b %d %H:%M:%S %Z %Y')
        desc = elt.findtext('name') + '\n' + elt.findtext('comment', '')
        return commit(author=elt.get('author'), date=util.datestr(date),
                      desc=desc.strip(), parents=self.parents[rev])

    def pull(self, rev):
        output, status = self.run('pull', self.path, all=True,
                                  match='hash %s' % rev,
                                  no_test=True, no_posthook=True,
                                  external_merge='/bin/false',
                                  repodir=self.tmppath)
        if status:
            if output.find('We have conflicts in') == -1:
                self.checkexit(status, output)
            output, status = self.run('revert', all=True, repodir=self.tmppath)
            self.checkexit(status, output)

    def getchanges(self, rev):
        self.pull(rev)
        copies = {}
        changes = []
        for elt in self.changes[rev].find('summary').getchildren():
            if elt.tag in ('add_directory', 'remove_directory'):
                continue
            if elt.tag == 'move':
                changes.append((elt.get('from'), rev))
                copies[elt.get('from')] = elt.get('to')
            else:
                changes.append((elt.text.strip(), rev))
        self.lastrev = rev
        return sorted(changes), copies

    def getfile(self, name, rev):
        if rev != self.lastrev:
            raise util.Abort(_('internal calling inconsistency'))
        return open(os.path.join(self.tmppath, name), 'rb').read()

    def getmode(self, name, rev):
        mode = os.lstat(os.path.join(self.tmppath, name)).st_mode
        return (mode & 0111) and 'x' or ''

    def gettags(self):
        return self.tags