Mercurial > hg
view hgext/convert/darcs.py @ 36204:33ed8b511185
cmdutil: pass ctx to makefilename() in place of repo/node pair (API)
author | Yuya Nishihara <yuya@tcha.org> |
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date | Thu, 02 Apr 2015 23:32:28 +0900 |
parents | 671aba341d90 |
children | c6061cadb400 |
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# 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 or any later version. from __future__ import absolute_import import errno import os import re import shutil import tempfile from mercurial.i18n import _ from mercurial import ( error, util, ) from . import common NoRepo = common.NoRepo # The naming drift of ElementTree is fun! try: import xml.etree.cElementTree.ElementTree as ElementTree import xml.etree.cElementTree.XMLParser as XMLParser except ImportError: try: import xml.etree.ElementTree.ElementTree as ElementTree import xml.etree.ElementTree.XMLParser as XMLParser except ImportError: try: import elementtree.cElementTree.ElementTree as ElementTree import elementtree.cElementTree.XMLParser as XMLParser except ImportError: try: import elementtree.ElementTree.ElementTree as ElementTree import elementtree.ElementTree.XMLParser as XMLParser except ImportError: pass class darcs_source(common.converter_source, common.commandline): def __init__(self, ui, repotype, path, revs=None): common.converter_source.__init__(self, ui, repotype, path, revs=revs) common.commandline.__init__(self, ui, 'darcs') # check for _darcs, ElementTree so that we can easily skip # test-convert-darcs if ElementTree is not around if not os.path.exists(os.path.join(path, '_darcs')): raise NoRepo(_("%s does not look like a darcs repository") % path) common.checktool('darcs') version = self.run0('--version').splitlines()[0].strip() if version < '2.1': raise error.Abort(_('darcs version 2.1 or newer needed (found %r)') % version) if "ElementTree" not in globals(): raise error.Abort(_("Python ElementTree module is not available")) self.path = os.path.realpath(path) self.lastrev = None self.changes = {} self.parents = {} self.tags = {} # Check darcs repository format format = self.format() if format: if format in ('darcs-1.0', 'hashed'): raise NoRepo(_("%s repository format is unsupported, " "please upgrade") % format) else: self.ui.warn(_('failed to detect repository format!')) 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 recode(self, s, encoding=None): if isinstance(s, unicode): # XMLParser returns unicode objects for anything it can't # encode into ASCII. We convert them back to str to get # recode's normal conversion behavior. s = s.encode('latin-1') return super(darcs_source, self).recode(s, encoding) def xml(self, cmd, **kwargs): # NOTE: darcs is currently encoding agnostic and will print # patch metadata byte-for-byte, even in the XML changelog. etree = ElementTree() # While we are decoding the XML as latin-1 to be as liberal as # possible, etree will still raise an exception if any # non-printable characters are in the XML changelog. parser = XMLParser(encoding='latin-1') p = self._run(cmd, **kwargs) etree.parse(p.stdout, parser=parser) p.wait() self.checkexit(p.returncode) return etree.getroot() def format(self): output, status = self.run('show', 'repo', no_files=True, repodir=self.path) self.checkexit(status) m = re.search(r'^\s*Format:\s*(.*)$', output, re.MULTILINE) if not m: return None return ','.join(sorted(f.strip() for f in m.group(1).split(','))) def manifest(self): man = [] output, status = self.run('show', 'files', no_directories=True, repodir=self.tmppath) self.checkexit(status) for line in output.split('\n'): path = line[2:] if path: man.append(path) return man 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', '') # etree can return unicode objects for name, comment, and author, # so recode() is used to ensure str objects are emitted. return common.commit(author=self.recode(elt.get('author')), date=util.datestr(date, '%Y-%m-%d %H:%M:%S %1%2'), desc=self.recode(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, full): if full: raise error.Abort(_("convert from darcs does not support --full")) copies = {} changes = [] man = None for elt in self.changes[rev].find('summary').getchildren(): if elt.tag in ('add_directory', 'remove_directory'): continue if elt.tag == 'move': if man is None: man = self.manifest() source, dest = elt.get('from'), elt.get('to') if source in man: # File move changes.append((source, rev)) changes.append((dest, rev)) copies[dest] = source else: # Directory move, deduce file moves from manifest source = source + '/' for f in man: if not f.startswith(source): continue fdest = dest + '/' + f[len(source):] changes.append((f, rev)) changes.append((fdest, rev)) copies[fdest] = f else: changes.append((elt.text.strip(), rev)) self.pull(rev) self.lastrev = rev return sorted(changes), copies, set() def getfile(self, name, rev): if rev != self.lastrev: raise error.Abort(_('internal calling inconsistency')) path = os.path.join(self.tmppath, name) try: data = util.readfile(path) mode = os.lstat(path).st_mode except IOError as inst: if inst.errno == errno.ENOENT: return None, None raise mode = (mode & 0o111) and 'x' or '' return data, mode def gettags(self): return self.tags