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  • Committer: Robert Collins
  • Date: 2007-09-25 08:41:29 UTC
  • mto: This revision was merged to the branch mainline in revision 2862.
  • Revision ID: robertc@robertcollins.net-20070925084129-ca0kd25h23dmunrs
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bzrlib/multiparent.py
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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from bzrlib.lazy_import import lazy_import
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from StringIO import StringIO
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from bzrlib import (
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    errors,
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    patiencediff,
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    trace,
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    ui,
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from bzrlib.tuned_gzip import GzipFile
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def topo_iter_keys(vf, keys=None):
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    if keys is None:
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        keys = vf.keys()
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    parents = vf.get_parent_map(keys)
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    return _topo_iter(parents, keys)
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def topo_iter(vf, versions=None):
 
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    seen = set()
 
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    descendants = {}
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    if versions is None:
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        versions = vf.versions()
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    parents = vf.get_parent_map(versions)
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    return _topo_iter(parents, versions)
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def _topo_iter(parents, versions):
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    seen = set()
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    descendants = {}
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    def pending_parents(version):
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        if parents[version] is None:
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            return []
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        return [v for v in parents[version] if v in versions and
 
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        return [v for v in vf.get_parents(version) if v in versions and
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                v not in seen]
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    for version_id in versions:
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        if parents[version_id] is None:
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            # parentless
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            continue
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        for parent_id in parents[version_id]:
 
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        for parent_id in vf.get_parents(version_id):
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            descendants.setdefault(parent_id, []).append(version_id)
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    cur = [v for v in versions if len(pending_parents(v)) == 0]
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    while len(cur) > 0:
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            yield version_id
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            seen.add(version_id)
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        cur = next
 
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    assert len(seen) == len(versions)
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class MultiParent(object):
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            elif cur_line[0] == '\n':
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                hunks[-1].lines[-1] += '\n'
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            else:
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                if not (cur_line[0] == 'c'):
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                    raise AssertionError(cur_line[0])
 
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                assert cur_line[0] == 'c', cur_line[0]
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                parent, parent_pos, child_pos, num_lines =\
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                    [int(v) for v in cur_line.split(' ')[1:]]
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                hunks.append(ParentText(parent, parent_pos, child_pos,
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            ' %(num_lines)r)' % self.__dict__
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    def __eq__(self, other):
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        if self.__class__ is not other.__class__:
 
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        if self.__class__ != other.__class__:
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            return False
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        return (self.__dict__ == other.__dict__)
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        return version in self._parents
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    def do_snapshot(self, version_id, parent_ids):
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        """Determine whether to perform a snapshot for this version"""
 
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        """Determine whether to perform a a snapshot for this version"""
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        if self.snapshot_interval is None:
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            return False
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        if self.max_snapshots is not None and\
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        :param single_parent: If true, omit all but one parent text, (but
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            retain parent metadata).
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        """
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        if not (no_cache or not verify):
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            raise ValueError()
 
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        assert no_cache or not verify
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        revisions = set(vf.versions())
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        total = len(revisions)
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        pb = ui.ui_factory.nested_progress_bar()
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                    if [p for p in parents if p not in self._parents] != []:
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                        continue
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                    lines = [a + ' ' + l for a, l in
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                             vf.annotate(revision)]
 
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                             vf.annotate_iter(revision)]
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                    if snapshots is None:
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                        force_snapshot = None
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                    else:
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                        self.clear_cache()
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                        vf.clear_cache()
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                        if verify:
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                            if not (lines == self.get_line_list([revision])[0]):
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                                raise AssertionError()
 
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                            assert lines == self.get_line_list([revision])[0]
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                            self.clear_cache()
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                    pb.update('Importing revisions',
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                              (total - len(revisions)) + len(added), total)
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        self._parents[version_id] = parent_ids
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    def get_diff(self, version_id):
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        try:
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            return self._diffs[version_id]
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        except KeyError:
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            raise errors.RevisionNotPresent(version_id, self)
 
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        return self._diffs[version_id]
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    def destroy(self):
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        self._diffs = {}
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    def add_diff(self, diff, version_id, parent_ids):
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        outfile = open(self._filename + '.mpknit', 'ab')
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        try:
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            outfile.seek(0, 2)      # workaround for windows bug:
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                                    # .tell() for files opened in 'ab' mode
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                                    # before any write returns 0
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            start = outfile.tell()
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            try:
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                zipfile = GzipFile(None, mode='ab', fileobj=outfile)