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# GNU Arch support for the convert extension
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from common import NoRepo, commandline, commit, converter_source
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from mercurial.i18n import _
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from mercurial import util
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import os, shutil, tempfile, stat, locale
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from email.Parser import Parser
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class gnuarch_source(converter_source, commandline):
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class gnuarch_rev:
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def __init__(self, rev):
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self.rev = rev
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self.summary = ''
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self.date = None
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self.author = ''
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self.continuationof = None
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self.add_files = []
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self.mod_files = []
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self.del_files = []
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self.ren_files = {}
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self.ren_dirs = {}
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def __init__(self, ui, path, rev=None):
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super(gnuarch_source, self).__init__(ui, path, rev=rev)
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if not os.path.exists(os.path.join(path, '{arch}')):
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raise NoRepo(_("%s does not look like a GNU Arch repo") % path)
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# Could use checktool, but we want to check for baz or tla.
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self.execmd = None
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if util.find_exe('baz'):
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self.execmd = 'baz'
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else:
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if util.find_exe('tla'):
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self.execmd = 'tla'
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else:
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raise util.Abort(_('cannot find a GNU Arch tool'))
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commandline.__init__(self, ui, self.execmd)
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self.path = os.path.realpath(path)
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self.tmppath = None
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self.treeversion = None
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self.lastrev = None
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self.changes = {}
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self.parents = {}
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self.tags = {}
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self.modecache = {}
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self.catlogparser = Parser()
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self.locale = locale.getpreferredencoding()
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self.archives = []
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def before(self):
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# Get registered archives
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self.archives = [i.rstrip('\n')
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for i in self.runlines0('archives', '-n')]
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if self.execmd == 'tla':
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output = self.run0('tree-version', self.path)
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else:
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output = self.run0('tree-version', '-d', self.path)
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self.treeversion = output.strip()
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# Get name of temporary directory
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version = self.treeversion.split('/')
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self.tmppath = os.path.join(tempfile.gettempdir(),
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'hg-%s' % version[1])
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# Generate parents dictionary
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self.parents[None] = []
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treeversion = self.treeversion
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child = None
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while treeversion:
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self.ui.status(_('analyzing tree version %s...\n') % treeversion)
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archive = treeversion.split('/')[0]
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if archive not in self.archives:
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self.ui.status(_('tree analysis stopped because it points to an unregistered archive %s...\n') % archive)
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break
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# Get the complete list of revisions for that tree version
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output, status = self.runlines('revisions', '-r', '-f', treeversion)
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self.checkexit(status, 'failed retrieveing revisions for %s' % treeversion)
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# No new iteration unless a revision has a continuation-of header
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treeversion = None
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for l in output:
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rev = l.strip()
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self.changes[rev] = self.gnuarch_rev(rev)
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self.parents[rev] = []
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# Read author, date and summary
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catlog, status = self.run('cat-log', '-d', self.path, rev)
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if status:
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catlog = self.run0('cat-archive-log', rev)
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self._parsecatlog(catlog, rev)
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# Populate the parents map
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self.parents[child].append(rev)
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# Keep track of the current revision as the child of the next
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# revision scanned
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child = rev
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# Check if we have to follow the usual incremental history
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# or if we have to 'jump' to a different treeversion given
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# by the continuation-of header.
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if self.changes[rev].continuationof:
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treeversion = '--'.join(self.changes[rev].continuationof.split('--')[:-1])
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break
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# If we reached a base-0 revision w/o any continuation-of
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# header, it means the tree history ends here.
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if rev[-6:] == 'base-0':
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break
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def after(self):
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self.ui.debug(_('cleaning up %s\n') % self.tmppath)
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shutil.rmtree(self.tmppath, ignore_errors=True)
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def getheads(self):
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return self.parents[None]
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def getfile(self, name, rev):
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if rev != self.lastrev:
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raise util.Abort(_('internal calling inconsistency'))
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# Raise IOError if necessary (i.e. deleted files).
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if not os.path.exists(os.path.join(self.tmppath, name)):
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raise IOError
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data, mode = self._getfile(name, rev)
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self.modecache[(name, rev)] = mode
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return data
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def getmode(self, name, rev):
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return self.modecache[(name, rev)]
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def getchanges(self, rev):
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self.modecache = {}
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self._update(rev)
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changes = []
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copies = {}
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for f in self.changes[rev].add_files:
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changes.append((f, rev))
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for f in self.changes[rev].mod_files:
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changes.append((f, rev))
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for f in self.changes[rev].del_files:
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changes.append((f, rev))
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for src in self.changes[rev].ren_files:
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to = self.changes[rev].ren_files[src]
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changes.append((src, rev))
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changes.append((to, rev))
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copies[to] = src
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for src in self.changes[rev].ren_dirs:
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to = self.changes[rev].ren_dirs[src]
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chgs, cps = self._rendirchanges(src, to);
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changes += [(f, rev) for f in chgs]
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copies.update(cps)
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self.lastrev = rev
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return util.sort(util.unique(changes)), copies
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def getcommit(self, rev):
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changes = self.changes[rev]
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return commit(author = changes.author, date = changes.date,
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desc = changes.summary, parents = self.parents[rev], rev=rev)
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def gettags(self):
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return self.tags
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def _execute(self, cmd, *args, **kwargs):
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cmdline = [self.execmd, cmd]
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cmdline += args
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cmdline = [util.shellquote(arg) for arg in cmdline]
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cmdline += ['>', util.nulldev, '2>', util.nulldev]
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cmdline = util.quotecommand(' '.join(cmdline))
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self.ui.debug(cmdline, '\n')
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return os.system(cmdline)
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def _update(self, rev):
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self.ui.debug(_('applying revision %s...\n') % rev)
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changeset, status = self.runlines('replay', '-d', self.tmppath,
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rev)
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if status:
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# Something went wrong while merging (baz or tla
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# issue?), get latest revision and try from there
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shutil.rmtree(self.tmppath, ignore_errors=True)
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self._obtainrevision(rev)
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else:
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old_rev = self.parents[rev][0]
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self.ui.debug(_('computing changeset between %s and %s...\n')
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% (old_rev, rev))
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self._parsechangeset(changeset, rev)
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def _getfile(self, name, rev):
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mode = os.lstat(os.path.join(self.tmppath, name)).st_mode
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if stat.S_ISLNK(mode):
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data = os.readlink(os.path.join(self.tmppath, name))
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mode = mode and 'l' or ''
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else:
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data = open(os.path.join(self.tmppath, name), 'rb').read()
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mode = (mode & 0111) and 'x' or ''
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return data, mode
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def _exclude(self, name):
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exclude = [ '{arch}', '.arch-ids', '.arch-inventory' ]
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for exc in exclude:
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if name.find(exc) != -1:
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return True
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return False
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def _readcontents(self, path):
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files = []
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contents = os.listdir(path)
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while len(contents) > 0:
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c = contents.pop()
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p = os.path.join(path, c)
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# os.walk could be used, but here we avoid internal GNU
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# Arch files and directories, thus saving a lot time.
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if not self._exclude(p):
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if os.path.isdir(p):
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contents += [os.path.join(c, f) for f in os.listdir(p)]
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else:
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files.append(c)
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return files
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def _rendirchanges(self, src, dest):
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changes = []
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copies = {}
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files = self._readcontents(os.path.join(self.tmppath, dest))
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for f in files:
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s = os.path.join(src, f)
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d = os.path.join(dest, f)
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changes.append(s)
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changes.append(d)
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copies[d] = s
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return changes, copies
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def _obtainrevision(self, rev):
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self.ui.debug(_('obtaining revision %s...\n') % rev)
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output = self._execute('get', rev, self.tmppath)
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self.checkexit(output)
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self.ui.debug(_('analysing revision %s...\n') % rev)
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files = self._readcontents(self.tmppath)
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self.changes[rev].add_files += files
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def _stripbasepath(self, path):
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if path.startswith('./'):
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return path[2:]
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return path
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def _parsecatlog(self, data, rev):
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try:
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catlog = self.catlogparser.parsestr(data)
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# Commit date
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self.changes[rev].date = util.datestr(
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util.strdate(catlog['Standard-date'],
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'%Y-%m-%d %H:%M:%S'))
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# Commit author
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self.changes[rev].author = self.recode(catlog['Creator'])
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# Commit description
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self.changes[rev].summary = '\n\n'.join((catlog['Summary'],
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catlog.get_payload()))
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self.changes[rev].summary = self.recode(self.changes[rev].summary)
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# Commit revision origin when dealing with a branch or tag
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if catlog.has_key('Continuation-of'):
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self.changes[rev].continuationof = self.recode(catlog['Continuation-of'])
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except Exception, err:
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raise util.Abort(_('could not parse cat-log of %s') % rev)
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def _parsechangeset(self, data, rev):
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for l in data:
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l = l.strip()
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# Added file (ignore added directory)
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if l.startswith('A') and not l.startswith('A/'):
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file = self._stripbasepath(l[1:].strip())
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if not self._exclude(file):
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self.changes[rev].add_files.append(file)
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# Deleted file (ignore deleted directory)
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elif l.startswith('D') and not l.startswith('D/'):
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file = self._stripbasepath(l[1:].strip())
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if not self._exclude(file):
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self.changes[rev].del_files.append(file)
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# Modified binary file
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elif l.startswith('Mb'):
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file = self._stripbasepath(l[2:].strip())
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if not self._exclude(file):
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self.changes[rev].mod_files.append(file)
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# Modified link
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elif l.startswith('M->'):
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file = self._stripbasepath(l[3:].strip())
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if not self._exclude(file):
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self.changes[rev].mod_files.append(file)
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# Modified file
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elif l.startswith('M'):
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file = self._stripbasepath(l[1:].strip())
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if not self._exclude(file):
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self.changes[rev].mod_files.append(file)
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# Renamed file (or link)
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elif l.startswith('=>'):
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files = l[2:].strip().split(' ')
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if len(files) == 1:
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files = l[2:].strip().split('\t')
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src = self._stripbasepath(files[0])
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dst = self._stripbasepath(files[1])
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if not self._exclude(src) and not self._exclude(dst):
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self.changes[rev].ren_files[src] = dst
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# Conversion from file to link or from link to file (modified)
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elif l.startswith('ch'):
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file = self._stripbasepath(l[2:].strip())
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if not self._exclude(file):
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self.changes[rev].mod_files.append(file)
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# Renamed directory
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elif l.startswith('/>'):
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dirs = l[2:].strip().split(' ')
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if len(dirs) == 1:
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dirs = l[2:].strip().split('\t')
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src = self._stripbasepath(dirs[0])
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dst = self._stripbasepath(dirs[1])
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if not self._exclude(src) and not self._exclude(dst):
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self.changes[rev].ren_dirs[src] = dst
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