hgext/convert/gnuarch.py
author Edouard Gomez <ed.gomez@free.fr>
Sun, 04 Jan 2009 18:44:30 +0100
changeset 7591 cac40e310f92
parent 7588 489c2cfbdd71
child 7592 75ad51257c82
permissions -rw-r--r--
convert/gnuarch: add cat-log payload to commit description
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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[src] = to
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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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            for c in cps:
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                copies[c] = cps[c]
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        self.lastrev = rev
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        return util.sort(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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   244
            d = os.path.join(dest, f)
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            changes.append(s)
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   246
            changes.append(d)
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   247
            copies[s] = d
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   248
        return changes, copies
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   249
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   250
    def _obtainrevision(self, rev):
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   251
        self.ui.debug(_('obtaining revision %s...\n') % rev)
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        output = self._execute('get', rev, self.tmppath)
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   253
        self.checkexit(output)
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   254
        self.ui.debug(_('analysing revision %s...\n') % rev)
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   255
        files = self._readcontents(self.tmppath)
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   256
        self.changes[rev].add_files += files
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   257
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   258
    def _stripbasepath(self, path):
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   259
        if path.startswith('./'):
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   260
            return path[2:]
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   261
        return path
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   262
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   263
    def _parsecatlog(self, data, rev):
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   264
        try:
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   265
            catlog = self.catlogparser.parsestr(data)
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   266
            self.changes[rev].date = util.datestr(
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   267
                util.strdate(catlog['Standard-date'],
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   268
                             '%Y-%m-%d %H:%M:%S'))
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   269
            self.changes[rev].author = catlog['Creator']
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   270
            self.changes[rev].summary = '\n\n'.join(catlog['Summary'],
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                                                    catlog.get_payload())
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            if catlog.has_key('Continuation-of'):
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                self.changes[rev].continuationof = 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