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Viewing changes to bzrlib/transform.py

  • Committer: Andrew Bennetts
  • Date: 2009-11-19 06:28:13 UTC
  • mfrom: (4811 +trunk)
  • mto: This revision was merged to the branch mainline in revision 4812.
  • Revision ID: andrew.bennetts@canonical.com-20091119062813-t6sd6gwbot8nfyze
Merge lp:bzr.

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bzrlib/transform.py
1054
1054
    def _limbo_name(self, trans_id):
1055
1055
        """Generate the limbo name of a file"""
1056
1056
        limbo_name = self._limbo_files.get(trans_id)
1057
 
        if limbo_name is not None:
1058
 
            return limbo_name
1059
 
        parent = self._new_parent.get(trans_id)
1060
 
        # if the parent directory is already in limbo (e.g. when building a
1061
 
        # tree), choose a limbo name inside the parent, to reduce further
1062
 
        # renames.
1063
 
        use_direct_path = False
1064
 
        if self._new_contents.get(parent) == 'directory':
1065
 
            filename = self._new_name.get(trans_id)
1066
 
            if filename is not None:
1067
 
                if parent not in self._limbo_children:
1068
 
                    self._limbo_children[parent] = set()
1069
 
                    self._limbo_children_names[parent] = {}
1070
 
                    use_direct_path = True
1071
 
                # the direct path can only be used if no other file has
1072
 
                # already taken this pathname, i.e. if the name is unused, or
1073
 
                # if it is already associated with this trans_id.
1074
 
                elif self._case_sensitive_target:
1075
 
                    if (self._limbo_children_names[parent].get(filename)
1076
 
                        in (trans_id, None)):
1077
 
                        use_direct_path = True
1078
 
                else:
1079
 
                    for l_filename, l_trans_id in\
1080
 
                        self._limbo_children_names[parent].iteritems():
1081
 
                        if l_trans_id == trans_id:
1082
 
                            continue
1083
 
                        if l_filename.lower() == filename.lower():
1084
 
                            break
1085
 
                    else:
1086
 
                        use_direct_path = True
1087
 
 
1088
 
        if use_direct_path:
1089
 
            limbo_name = pathjoin(self._limbo_files[parent], filename)
1090
 
            self._limbo_children[parent].add(trans_id)
1091
 
            self._limbo_children_names[parent][filename] = trans_id
1092
 
        else:
1093
 
            limbo_name = pathjoin(self._limbodir, trans_id)
1094
 
            self._needs_rename.add(trans_id)
1095
 
        self._limbo_files[trans_id] = limbo_name
 
1057
        if limbo_name is None:
 
1058
            limbo_name = self._generate_limbo_path(trans_id)
 
1059
            self._limbo_files[trans_id] = limbo_name
1096
1060
        return limbo_name
1097
1061
 
 
1062
    def _generate_limbo_path(self, trans_id):
 
1063
        """Generate a limbo path using the trans_id as the relative path.
 
1064
 
 
1065
        This is suitable as a fallback, and when the transform should not be
 
1066
        sensitive to the path encoding of the limbo directory.
 
1067
        """
 
1068
        self._needs_rename.add(trans_id)
 
1069
        return pathjoin(self._limbodir, trans_id)
 
1070
 
1098
1071
    def adjust_path(self, name, parent, trans_id):
1099
1072
        previous_parent = self._new_parent.get(trans_id)
1100
1073
        previous_name = self._new_name.get(trans_id)
1407
1380
                continue
1408
1381
            yield self.trans_id_tree_path(childpath)
1409
1382
 
 
1383
    def _generate_limbo_path(self, trans_id):
 
1384
        """Generate a limbo path using the final path if possible.
 
1385
 
 
1386
        This optimizes the performance of applying the tree transform by
 
1387
        avoiding renames.  These renames can be avoided only when the parent
 
1388
        directory is already scheduled for creation.
 
1389
 
 
1390
        If the final path cannot be used, falls back to using the trans_id as
 
1391
        the relpath.
 
1392
        """
 
1393
        parent = self._new_parent.get(trans_id)
 
1394
        # if the parent directory is already in limbo (e.g. when building a
 
1395
        # tree), choose a limbo name inside the parent, to reduce further
 
1396
        # renames.
 
1397
        use_direct_path = False
 
1398
        if self._new_contents.get(parent) == 'directory':
 
1399
            filename = self._new_name.get(trans_id)
 
1400
            if filename is not None:
 
1401
                if parent not in self._limbo_children:
 
1402
                    self._limbo_children[parent] = set()
 
1403
                    self._limbo_children_names[parent] = {}
 
1404
                    use_direct_path = True
 
1405
                # the direct path can only be used if no other file has
 
1406
                # already taken this pathname, i.e. if the name is unused, or
 
1407
                # if it is already associated with this trans_id.
 
1408
                elif self._case_sensitive_target:
 
1409
                    if (self._limbo_children_names[parent].get(filename)
 
1410
                        in (trans_id, None)):
 
1411
                        use_direct_path = True
 
1412
                else:
 
1413
                    for l_filename, l_trans_id in\
 
1414
                        self._limbo_children_names[parent].iteritems():
 
1415
                        if l_trans_id == trans_id:
 
1416
                            continue
 
1417
                        if l_filename.lower() == filename.lower():
 
1418
                            break
 
1419
                    else:
 
1420
                        use_direct_path = True
 
1421
 
 
1422
        if not use_direct_path:
 
1423
            return DiskTreeTransform._generate_limbo_path(self, trans_id)
 
1424
 
 
1425
        limbo_name = pathjoin(self._limbo_files[parent], filename)
 
1426
        self._limbo_children[parent].add(trans_id)
 
1427
        self._limbo_children_names[parent][filename] = trans_id
 
1428
        return limbo_name
 
1429
 
 
1430
 
1410
1431
    def apply(self, no_conflicts=False, precomputed_delta=None, _mover=None):
1411
1432
        """Apply all changes to the inventory and filesystem.
1412
1433
 
1952
1973
                statval = os.lstat(limbo_name)
1953
1974
                size = statval.st_size
1954
1975
                if not supports_executable():
1955
 
                    executable = None
 
1976
                    executable = False
1956
1977
                else:
1957
1978
                    executable = statval.st_mode & S_IEXEC
1958
1979
            else:
1960
1981
                executable = None
1961
1982
            if kind == 'symlink':
1962
1983
                link_or_sha1 = os.readlink(limbo_name).decode(osutils._fs_enc)
1963
 
        if supports_executable():
1964
 
            executable = tt._new_executability.get(trans_id, executable)
 
1984
        executable = tt._new_executability.get(trans_id, executable)
1965
1985
        return kind, size, executable, link_or_sha1
1966
1986
 
1967
1987
    def iter_changes(self, from_tree, include_unchanged=False,
2618
2638
                tt.adjust_path(name[1], parent_trans, trans_id)
2619
2639
            if executable[0] != executable[1] and kind[1] == "file":
2620
2640
                tt.set_executability(executable[1], trans_id)
2621
 
        for (trans_id, mode_id), bytes in target_tree.iter_files_bytes(
2622
 
            deferred_files):
2623
 
            tt.create_file(bytes, trans_id, mode_id)
 
2641
        if working_tree.supports_content_filtering():
 
2642
            for index, ((trans_id, mode_id), bytes) in enumerate(
 
2643
                target_tree.iter_files_bytes(deferred_files)):
 
2644
                file_id = deferred_files[index][0]
 
2645
                # We're reverting a tree to the target tree so using the
 
2646
                # target tree to find the file path seems the best choice
 
2647
                # here IMO - Ian C 27/Oct/2009
 
2648
                filter_tree_path = target_tree.id2path(file_id)
 
2649
                filters = working_tree._content_filter_stack(filter_tree_path)
 
2650
                bytes = filtered_output_bytes(bytes, filters,
 
2651
                    ContentFilterContext(filter_tree_path, working_tree))
 
2652
                tt.create_file(bytes, trans_id, mode_id)
 
2653
        else:
 
2654
            for (trans_id, mode_id), bytes in target_tree.iter_files_bytes(
 
2655
                deferred_files):
 
2656
                tt.create_file(bytes, trans_id, mode_id)
2624
2657
    finally:
2625
2658
        if basis_tree is not None:
2626
2659
            basis_tree.unlock()