ref: 87de3d34335e20fdb2ad2c471f89173aa6610193
dir: /sys/src/cmd/hg/hgext/convert/darcs.py/
# darcs.py - darcs support for the convert extension
#
# Copyright 2007-2009 Matt Mackall <mpm@selenic.com> 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')
version = self.run0('--version').splitlines()[0].strip()
if version < '2.1':
raise util.Abort(_('darcs version 2.1 or newer needed (found %r)') %
version)
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