/brz/remove-bazaar

To get this branch, use:
bzr branch http://gegoxaren.bato24.eu/bzr/brz/remove-bazaar

« back to all changes in this revision

Viewing changes to mapping.py

Fix remote fetching.

Show diffs side-by-side

added added

removed removed

Lines of Context:
mapping.py
 
1
# Copyright (C) 2007-2008 Canonical Ltd
 
2
#
 
3
# This program is free software; you can redistribute it and/or modify
 
4
# it under the terms of the GNU General Public License as published by
 
5
# the Free Software Foundation; either version 2 of the License, or
 
6
# (at your option) any later version.
 
7
#
 
8
# This program is distributed in the hope that it will be useful,
 
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
11
# GNU General Public License for more details.
 
12
#
 
13
# You should have received a copy of the GNU General Public License
 
14
# along with this program; if not, write to the Free Software
 
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
16
 
 
17
"""Converters, etc for going between Bazaar and Git ids."""
 
18
 
 
19
from bzrlib import errors, foreign
 
20
from bzrlib.inventory import ROOT_ID
 
21
from bzrlib.foreign import (
 
22
        ForeignVcs, 
 
23
        VcsMappingRegistry, 
 
24
        ForeignRevision,
 
25
        )
 
26
 
 
27
def escape_file_id(file_id):
 
28
    return file_id.replace('_', '__').replace(' ', '_s')
 
29
 
 
30
 
 
31
def unescape_file_id(file_id):
 
32
    return file_id.replace("_s", " ").replace("__", "_")
 
33
 
 
34
 
 
35
class BzrGitMapping(foreign.VcsMapping):
 
36
    """Class that maps between Git and Bazaar semantics."""
 
37
    experimental = False
 
38
 
 
39
    def __init__(self):
 
40
        super(BzrGitMapping, self).__init__(foreign_git)
 
41
 
 
42
    def __eq__(self, other):
 
43
        return type(self) == type(other) and self.revid_prefix == other.revid_prefix
 
44
 
 
45
    @classmethod
 
46
    def revision_id_foreign_to_bzr(cls, git_rev_id):
 
47
        """Convert a git revision id handle to a Bazaar revision id."""
 
48
        return "%s:%s" % (cls.revid_prefix, git_rev_id)
 
49
 
 
50
    @classmethod
 
51
    def revision_id_bzr_to_foreign(cls, bzr_rev_id):
 
52
        """Convert a Bazaar revision id to a git revision id handle."""
 
53
        if not bzr_rev_id.startswith("%s:" % cls.revid_prefix):
 
54
            raise errors.InvalidRevisionId(bzr_rev_id, cls)
 
55
        return bzr_rev_id[len(cls.revid_prefix)+1:], cls()
 
56
 
 
57
    def generate_file_id(self, path):
 
58
        if path == "":
 
59
            return ROOT_ID
 
60
        return escape_file_id(path.encode('utf-8'))
 
61
 
 
62
    def import_commit(self, commit):
 
63
        """Convert a git commit to a bzr revision.
 
64
 
 
65
        :return: a `bzrlib.revision.Revision` object.
 
66
        """
 
67
        if commit is None:
 
68
            raise AssertionError("Commit object can't be None")
 
69
        rev = ForeignRevision(commit.id, self, self.revision_id_foreign_to_bzr(commit.id))
 
70
        rev.parent_ids = tuple([self.revision_id_foreign_to_bzr(p) for p in commit.parents])
 
71
        rev.message = commit.message.decode("utf-8", "replace")
 
72
        rev.committer = str(commit.committer).decode("utf-8", "replace")
 
73
        if commit.committer != commit.author:
 
74
            rev.properties['author'] = str(commit.author).decode("utf-8", "replace")
 
75
        rev.timestamp = commit.commit_time
 
76
        rev.timezone = 0
 
77
        return rev
 
78
 
 
79
    def export_commit(self, rev, tree_sha):
 
80
        """Turn a Bazaar revision in to a Git commit
 
81
 
 
82
        :param tree_sha: HACK parameter (until we can retrieve this from the mapping)
 
83
        :return dulwich.objects.Commit represent the revision:
 
84
        """
 
85
        from dulwich.objects import Commit
 
86
        commit = Commit()
 
87
        commit._tree = tree_sha
 
88
        for p in rev.parent_ids:
 
89
            commit._parents.append(self.revision_id_bzr_to_foreign(p))
 
90
        commit._message = rev.message
 
91
        commit._committer = rev.committer
 
92
        if 'author' in rev.properties:
 
93
            commit._author = rev.properties['author']
 
94
        else:
 
95
            commit._author = rev.committer
 
96
        commit._commit_time = long(rev.timestamp)
 
97
        commit.serialize()
 
98
        return commit
 
99
 
 
100
 
 
101
class BzrGitMappingv1(BzrGitMapping):
 
102
    revid_prefix = 'git-v1'
 
103
    experimental = False
 
104
 
 
105
 
 
106
class BzrGitMappingExperimental(BzrGitMappingv1):
 
107
    revid_prefix = 'git-experimental'
 
108
    experimental = True
 
109
 
 
110
 
 
111
class GitMappingRegistry(VcsMappingRegistry):
 
112
 
 
113
    def revision_id_bzr_to_foreign(self, bzr_revid):
 
114
        if not bzr_revid.startswith("git-"):
 
115
            raise errors.InvalidRevisionId(bzr_revid, None)
 
116
        (mapping_version, git_sha) = bzr_revid.split(":", 1)
 
117
        mapping = self.get(mapping_version)
 
118
        return mapping.revision_id_bzr_to_foreign(bzr_revid)
 
119
 
 
120
    parse_revision_id = revision_id_bzr_to_foreign
 
121
 
 
122
 
 
123
mapping_registry = GitMappingRegistry()
 
124
mapping_registry.register_lazy('git-v1', "bzrlib.plugins.git.mapping",
 
125
                                   "BzrGitMappingv1")
 
126
mapping_registry.register_lazy('git-experimental', "bzrlib.plugins.git.mapping",
 
127
                                   "BzrGitMappingExperimental")
 
128
 
 
129
 
 
130
class ForeignGit(ForeignVcs):
 
131
    """Foreign Git."""
 
132
 
 
133
    def __init__(self):
 
134
        super(ForeignGit, self).__init__(mapping_registry)
 
135
 
 
136
    @classmethod
 
137
    def show_foreign_revid(cls, foreign_revid):
 
138
        return { "git commit": foreign_revid }
 
139
 
 
140
 
 
141
foreign_git = ForeignGit()
 
142
default_mapping = BzrGitMappingv1()