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repository.py
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"""An adapter between a Git Repository and a Bazaar Branch"""
18
18
 
19
 
import git
20
19
import os
21
20
import time
22
21
 
24
23
from bzrlib import (
25
24
    deprecated_graph,
26
25
    errors,
 
26
    graph,
27
27
    inventory,
28
28
    osutils,
29
29
    repository,
32
32
    urlutils,
33
33
    versionedfile,
34
34
    )
 
35
from bzrlib.foreign import (
 
36
        ForeignRepository,
 
37
        ForeignRevision,
 
38
        )
 
39
from bzrlib.trace import mutter
35
40
from bzrlib.transport import get_transport
36
41
 
37
42
from bzrlib.plugins.git.foreign import (
38
 
    versionedfiles
 
43
    versionedfiles,
39
44
    )
40
45
from bzrlib.plugins.git.mapping import default_mapping
41
46
 
42
 
 
43
 
class GitRepository(repository.Repository):
 
47
from bzrlib.plugins.git import git
 
48
 
 
49
 
 
50
class GitTags(object):
 
51
 
 
52
    def __init__(self, tags):
 
53
        self._tags = tags
 
54
 
 
55
    def __iter__(self):
 
56
        return iter(self._tags)
 
57
 
 
58
 
 
59
class GitRepository(ForeignRepository):
44
60
    """An adapter to git repositories for bzr."""
45
61
 
46
62
    _serializer = None
47
63
 
48
64
    def __init__(self, gitdir, lockfiles):
 
65
        ForeignRepository.__init__(self, GitFormat(), gitdir, lockfiles)
 
66
        from bzrlib.plugins.git import fetch
 
67
        repository.InterRepository.register_optimiser(fetch.InterFromGitRepository)
 
68
 
 
69
    def is_shared(self):
 
70
        return True
 
71
 
 
72
    def supports_rich_root(self):
 
73
        return True
 
74
 
 
75
    def _warn_if_deprecated(self):
 
76
        # This class isn't deprecated
 
77
        pass
 
78
 
 
79
    def get_mapping(self):
 
80
        return default_mapping
 
81
 
 
82
 
 
83
 
 
84
class LocalGitRepository(GitRepository):
 
85
 
 
86
    def __init__(self, gitdir, lockfiles):
 
87
        # FIXME: This also caches negatives. Need to be more careful 
 
88
        # about this once we start writing to git
 
89
        self._parents_provider = graph.CachingParentsProvider(self)
 
90
        GitRepository.__init__(self, gitdir, lockfiles)
49
91
        self.base = gitdir.root_transport.base
50
 
        self.bzrdir = gitdir
51
 
        self.control_files = lockfiles
52
92
        self._git = gitdir._git
53
93
        self.texts = None
54
94
        self.signatures = versionedfiles.VirtualSignatureTexts(self)
55
95
        self.revisions = versionedfiles.VirtualRevisionTexts(self)
56
 
        self._format = GitFormat()
57
 
        self._fallback_repositories = []
 
96
        self.tags = GitTags(self._git.get_tags())
58
97
 
59
 
    def _all_revision_ids(self):
60
 
        if self._git.heads == []:
61
 
            return set()
62
 
        ret = set()
63
 
        skip = 0
64
 
        max_count = 1000
65
 
        cms = None
66
 
        while cms != []:
67
 
            cms = self._git.commits("--all", max_count=max_count, skip=skip)
68
 
            skip += max_count
69
 
            ret.update([default_mapping.revision_id_foreign_to_bzr(cm.id) for cm in cms])
 
98
    def all_revision_ids(self):
 
99
        ret = set([revision.NULL_REVISION])
 
100
        if self._git.heads() == []:
 
101
            return ret
 
102
        bzr_heads = [self.get_mapping().revision_id_foreign_to_bzr(h) for h in self._git.heads()]
 
103
        ret = set(bzr_heads)
 
104
        graph = self.get_graph()
 
105
        for rev, parents in graph.iter_ancestry(bzr_heads):
 
106
            ret.add(rev)
70
107
        return ret
71
108
 
72
 
    def is_shared(self):
73
 
        return True
74
 
 
75
 
    def supports_rich_root(self):
76
 
        return False
77
 
 
78
109
    #def get_revision_delta(self, revision_id):
79
110
    #    parent_revid = self.get_revision(revision_id).parent_ids[0]
80
111
    #    diff = self._git.diff(ids.convert_revision_id_bzr_to_git(parent_revid),
81
112
    #                   ids.convert_revision_id_bzr_to_git(revision_id))
82
113
 
83
 
    def get_ancestry(self, revision_id):
84
 
        revision_id = revision.ensure_null(revision_id)
85
 
        ret = []
86
 
        if revision_id != revision.NULL_REVISION:
87
 
            skip = 0
88
 
            max_count = 1000
89
 
            cms = None
90
 
            while cms != []:
91
 
                cms = self._git.commits(self.lookup_git_revid(revision_id, default_mapping), max_count=max_count, skip=skip)
92
 
                skip += max_count
93
 
                ret += [default_mapping.revision_id_foreign_to_bzr(cm.id) for cm in cms]
94
 
        return [None] + ret
 
114
    def _make_parents_provider(self):
 
115
        """See Repository._make_parents_provider()."""
 
116
        return self._parents_provider
 
117
 
 
118
    def get_parent_map(self, revids):
 
119
        parent_map = {}
 
120
        mutter("get_parent_map(%r)", revids)
 
121
        for revision_id in revids:
 
122
            assert isinstance(revision_id, str)
 
123
            if revision_id == revision.NULL_REVISION:
 
124
                parent_map[revision_id] = ()
 
125
                continue
 
126
            hexsha = self.lookup_git_revid(revision_id, self.get_mapping())
 
127
            commit  = self._git.commit(hexsha)
 
128
            if commit is None:
 
129
                continue
 
130
            else:
 
131
                parent_map[revision_id] = [self.get_mapping().revision_id_foreign_to_bzr(p) for p in commit.parents]
 
132
        return parent_map
 
133
 
 
134
    def get_ancestry(self, revision_id, topo_sorted=True):
 
135
        """See Repository.get_ancestry().
 
136
        """
 
137
        if revision_id is None:
 
138
            return self._all_revision_ids()
 
139
        assert isinstance(revision_id, str)
 
140
        ancestry = []
 
141
        graph = self.get_graph()
 
142
        for rev, parents in graph.iter_ancestry([revision_id]):
 
143
            if rev == revision.NULL_REVISION:
 
144
                rev = None
 
145
            ancestry.append(rev)
 
146
        ancestry.reverse()
 
147
        return ancestry
95
148
 
96
149
    def get_signature_text(self, revision_id):
97
150
        raise errors.NoSuchRevision(self, revision_id)
98
151
 
 
152
    def lookup_revision_id(self, revid):
 
153
        """Lookup a revision id.
 
154
        
 
155
        :param revid: Bazaar revision id.
 
156
        :return: Tuple with git revisionid and mapping.
 
157
        """
 
158
        # Yes, this doesn't really work, but good enough as a stub
 
159
        return osutils.sha(rev_id).hexdigest(), self.get_mapping()
 
160
 
99
161
    def has_signature_for_revision_id(self, revision_id):
100
162
        return False
101
163
 
102
 
    def get_parent_map(self, revision_ids):
103
 
        ret = {}
104
 
        for revid in revision_ids:
105
 
            if revid == revision.NULL_REVISION:
106
 
                ret[revid] = ()
107
 
            else:
108
 
                commit = self._git.commit(self.lookup_git_revid(revid, default_mapping))
109
 
                ret[revid] = tuple([default_mapping.revision_id_foreign_to_bzr(p.id) for p in commit.parents])
110
 
        return ret
111
 
 
112
164
    def lookup_git_revid(self, bzr_revid, mapping):
113
165
        try:
114
166
            return mapping.revision_id_bzr_to_foreign(bzr_revid)
115
167
        except errors.InvalidRevisionId:
116
 
            raise errors.NoSuchRevision(bzr_revid, self)
 
168
            raise errors.NoSuchRevision(self, bzr_revid)
117
169
 
118
170
    def get_revision(self, revision_id):
119
 
        git_commit_id = self.lookup_git_revid(revision_id, default_mapping)
 
171
        git_commit_id = self.lookup_git_revid(revision_id, self.get_mapping())
120
172
        commit = self._git.commit(git_commit_id)
121
173
        # print "fetched revision:", git_commit_id
122
 
        revision = self._parse_rev(commit)
 
174
        if commit is None:
 
175
            raise errors.NoSuchRevision(self, revision_id)
 
176
        revision = self._parse_rev(commit, self.get_mapping())
 
177
        assert revision is not None
123
178
        return revision
124
179
 
125
180
    def has_revision(self, revision_id):
126
181
        try:
127
182
            self.get_revision(revision_id)
128
 
        except NoSuchRevision:
 
183
        except errors.NoSuchRevision:
129
184
            return False
130
185
        else:
131
186
            return True
132
187
 
133
 
    def get_revisions(self, revisions):
134
 
        return [self.get_revision(r) for r in revisions]
 
188
    def get_revisions(self, revids):
 
189
        return [self.get_revision(r) for r in revids]
135
190
 
136
191
    @classmethod
137
 
    def _parse_rev(klass, commit):
 
192
    def _parse_rev(klass, commit, mapping):
138
193
        """Convert a git commit to a bzr revision.
139
194
 
140
195
        :return: a `bzrlib.revision.Revision` object.
141
196
        """
142
 
        rev = revision.Revision(default_mapping.revision_id_foreign_to_bzr(commit.id))
143
 
        rev.parent_ids = tuple([default_mapping.revision_id_foreign_to_bzr(p.id) for p in commit.parents])
144
 
        rev.inventory_sha1 = ""
 
197
        if commit is None:
 
198
            raise AssertionError("Commit object can't be None")
 
199
        rev = ForeignRevision(commit.id, mapping, mapping.revision_id_foreign_to_bzr(commit.id))
 
200
        rev.parent_ids = tuple([mapping.revision_id_foreign_to_bzr(p) for p in commit.parents])
145
201
        rev.message = commit.message.decode("utf-8", "replace")
146
 
        rev.committer = str(commit.committer)
147
 
        rev.properties['author'] = str(commit.author)
148
 
        rev.timestamp = time.mktime(commit.committed_date)
 
202
        rev.committer = str(commit.committer).decode("utf-8", "replace")
 
203
        if commit.committer != commit.author:
 
204
            rev.properties['author'] = str(commit.author).decode("utf-8", "replace")
 
205
        rev.timestamp = commit.commit_time
149
206
        rev.timezone = 0
150
207
        return rev
151
208
 
170
227
    def set_make_working_trees(self, trees):
171
228
        pass
172
229
 
 
230
    def fetch_pack(self, determine_wants, graph_walker, pack_data):
 
231
        raise NotImplementedError(self.fetch_pack)
 
232
 
173
233
 
174
234
def escape_file_id(file_id):
175
235
    return file_id.replace('_', '__').replace(' ', '_s')
184
244
    def __init__(self, repository, revision_id):
185
245
        self._repository = repository
186
246
        self.revision_id = revision_id
187
 
        git_id = repository.lookup_git_revid(revision_id, default_mapping)
 
247
        git_id = repository.lookup_git_revid(revision_id, repository.get_mapping())
188
248
        self.tree = repository._git.commit(git_id).tree
189
249
        self._inventory = inventory.Inventory(revision_id=revision_id)
190
250
        self._inventory.root.revision = revision_id
196
256
    def get_file_text(self, file_id):
197
257
        entry = self._inventory[file_id]
198
258
        if entry.kind == 'directory': return ""
199
 
        return self._repository._git.blob(entry.text_id).data
 
259
        return self._repository._git.get_blob(entry.text_id).data
200
260
 
201
 
    def _build_inventory(self, tree, ie, path):
 
261
    def _build_inventory(self, tree_id, ie, path):
202
262
        assert isinstance(path, str)
203
 
        for b in tree.contents:
204
 
            basename = b.name.decode("utf-8")
 
263
        tree = self._repository._git.tree(tree_id)
 
264
        for mode, name, hexsha in tree.entries():
 
265
            basename = name.decode("utf-8")
205
266
            if path == "":
206
 
                child_path = b.name
 
267
                child_path = name
207
268
            else:
208
 
                child_path = urlutils.join(path, b.name)
 
269
                child_path = urlutils.join(path, name)
209
270
            file_id = escape_file_id(child_path.encode('utf-8'))
210
 
            if b.mode[0] == '0':
 
271
            entry_kind = (mode & 0700000) / 0100000
 
272
            if entry_kind == 0:
211
273
                child_ie = inventory.InventoryDirectory(file_id, basename, ie.file_id)
212
 
            elif b.mode[0] == '1':
213
 
                if b.mode[1] == '0':
 
274
            elif entry_kind == 1:
 
275
                file_kind = (mode & 070000) / 010000
 
276
                b = self._repository._git.get_blob(hexsha)
 
277
                if file_kind == 0:
214
278
                    child_ie = inventory.InventoryFile(file_id, basename, ie.file_id)
215
279
                    child_ie.text_sha1 = osutils.sha_string(b.data)
216
 
                elif b.mode[1] == '2':
 
280
                elif file_kind == 2:
217
281
                    child_ie = inventory.InventoryLink(file_id, basename, ie.file_id)
218
282
                    child_ie.text_sha1 = osutils.sha_string("")
219
283
                else:
220
284
                    raise AssertionError(
221
 
                        "Unknown file kind, perms=%r." % (b.mode,))
 
285
                        "Unknown file kind, perms=%o." % (mode,))
222
286
                child_ie.text_id = b.id
223
 
                child_ie.text_size = b.size
 
287
                child_ie.text_size = len(b.data)
224
288
            else:
225
289
                raise AssertionError(
226
 
                    "Unknown blob kind, perms=%r." % (b.mode,))
227
 
            child_ie.executable = bool(int(b.mode[3:], 8) & 0111)
 
290
                    "Unknown blob kind, perms=%r." % (mode,))
 
291
            fs_mode = mode & 0777
 
292
            child_ie.executable = bool(fs_mode & 0111)
228
293
            child_ie.revision = self.revision_id
229
294
            self._inventory.add(child_ie)
230
 
            if b.mode[0] == '0':
231
 
                self._build_inventory(b, child_ie, child_path)
 
295
            if entry_kind == 0:
 
296
                self._build_inventory(hexsha, child_ie, child_path)
232
297
 
233
298
 
234
299
class GitFormat(object):
235
300
 
236
301
    supports_tree_reference = False
 
302
    rich_root_data = True
237
303
 
238
304
    def get_format_description(self):
239
305
        return "Git Repository"
 
306
 
 
307
    def initialize(self, url, shared=False, _internal=False):
 
308
        raise bzr_errors.UninitializableFormat(self)
 
309
 
 
310
    def check_conversion_target(self, target_repo_format):
 
311
        return target_repo_format.rich_root_data