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git_repository.py
16
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17
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"""An adapter between a Git Repository and a Bazaar Branch"""
18
18
 
 
19
import git
19
20
import os
20
21
import time
21
22
 
23
24
from bzrlib import (
24
25
    deprecated_graph,
25
26
    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
 
        )
38
 
from bzrlib.trace import mutter
39
35
from bzrlib.transport import get_transport
40
36
 
41
 
from bzrlib.plugins.git.foreign import (
42
 
    versionedfiles,
 
37
from bzrlib.plugins.git import (
 
38
    cache,
 
39
    ids,
 
40
    versionedfiles
43
41
    )
44
 
from bzrlib.plugins.git.mapping import default_mapping
45
 
 
46
 
from bzrlib.plugins.git import git
47
 
 
48
 
 
49
 
class GitTags(object):
50
 
 
51
 
    def __init__(self, tags):
52
 
        self._tags = tags
53
 
 
54
 
    def __iter__(self):
55
 
        return iter(self._tags)
56
 
 
57
 
 
58
 
class GitRepository(ForeignRepository):
 
42
 
 
43
 
 
44
class GitRepository(repository.Repository):
59
45
    """An adapter to git repositories for bzr."""
60
46
 
61
47
    _serializer = None
62
48
 
63
49
    def __init__(self, gitdir, lockfiles):
64
 
        ForeignRepository.__init__(self, GitFormat(), gitdir, lockfiles)
65
 
        from bzrlib.plugins.git import fetch
66
 
        repository.InterRepository.register_optimiser(fetch.InterGitRepository)
67
 
        repository.InterRepository.register_optimiser(fetch.InterGitNonGitRepository)
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
 
    def make_working_trees(self):
83
 
        return True
84
 
 
85
 
 
86
 
class LocalGitRepository(GitRepository):
87
 
 
88
 
    def __init__(self, gitdir, lockfiles):
89
 
        # FIXME: This also caches negatives. Need to be more careful 
90
 
        # about this once we start writing to git
91
 
        self._parents_provider = graph.CachingParentsProvider(self)
92
 
        GitRepository.__init__(self, gitdir, lockfiles)
93
50
        self.base = gitdir.root_transport.base
 
51
        self.bzrdir = gitdir
 
52
        self.control_files = lockfiles
94
53
        self._git = gitdir._git
 
54
        cache_dir = cache.create_cache_dir()
 
55
        cachedir_transport = get_transport(cache_dir)
 
56
        cache_file = os.path.join(cache_dir, 'cache-%s' % ids.NAMESPACE)
95
57
        self.texts = None
96
58
        self.signatures = versionedfiles.VirtualSignatureTexts(self)
97
59
        self.revisions = versionedfiles.VirtualRevisionTexts(self)
98
 
        self.tags = GitTags(self._git.get_tags())
 
60
        self._format = GitFormat()
 
61
        self._fallback_repositories = []
99
62
 
100
 
    def all_revision_ids(self):
101
 
        ret = set([revision.NULL_REVISION])
102
 
        if self._git.heads() == []:
103
 
            return ret
104
 
        bzr_heads = [self.get_mapping().revision_id_foreign_to_bzr(h) for h in self._git.heads()]
105
 
        ret = set(bzr_heads)
106
 
        graph = self.get_graph()
107
 
        for rev, parents in graph.iter_ancestry(bzr_heads):
108
 
            ret.add(rev)
 
63
    def _all_revision_ids(self):
 
64
        if self._git.heads == []:
 
65
            return set()
 
66
        ret = set()
 
67
        skip = 0
 
68
        max_count = 1000
 
69
        cms = None
 
70
        while cms != []:
 
71
            cms = self._git.commits("--all", max_count=max_count, skip=skip)
 
72
            skip += max_count
 
73
            ret.update([ids.convert_revision_id_git_to_bzr(cm.id) for cm in cms])
109
74
        return ret
110
75
 
 
76
    def is_shared(self):
 
77
        return True
 
78
 
 
79
    def supports_rich_root(self):
 
80
        return False
 
81
 
111
82
    #def get_revision_delta(self, revision_id):
112
83
    #    parent_revid = self.get_revision(revision_id).parent_ids[0]
113
84
    #    diff = self._git.diff(ids.convert_revision_id_bzr_to_git(parent_revid),
114
85
    #                   ids.convert_revision_id_bzr_to_git(revision_id))
115
86
 
116
 
    def _make_parents_provider(self):
117
 
        """See Repository._make_parents_provider()."""
118
 
        return self._parents_provider
119
 
 
120
 
    def get_parent_map(self, revids):
121
 
        parent_map = {}
122
 
        mutter("get_parent_map(%r)", revids)
123
 
        for revision_id in revids:
124
 
            assert isinstance(revision_id, str)
125
 
            if revision_id == revision.NULL_REVISION:
126
 
                parent_map[revision_id] = ()
127
 
                continue
128
 
            hexsha = self.lookup_git_revid(revision_id, self.get_mapping())
129
 
            commit  = self._git.commit(hexsha)
130
 
            if commit is None:
131
 
                continue
132
 
            else:
133
 
                parent_map[revision_id] = [self.get_mapping().revision_id_foreign_to_bzr(p) for p in commit.parents]
134
 
        return parent_map
135
 
 
136
 
    def get_ancestry(self, revision_id, topo_sorted=True):
137
 
        """See Repository.get_ancestry().
138
 
        """
139
 
        if revision_id is None:
140
 
            return self._all_revision_ids()
141
 
        assert isinstance(revision_id, str)
142
 
        ancestry = []
143
 
        graph = self.get_graph()
144
 
        for rev, parents in graph.iter_ancestry([revision_id]):
145
 
            if rev == revision.NULL_REVISION:
146
 
                rev = None
147
 
            ancestry.append(rev)
148
 
        ancestry.reverse()
149
 
        return ancestry
 
87
    def get_ancestry(self, revision_id):
 
88
        revision_id = revision.ensure_null(revision_id)
 
89
        ret = []
 
90
        if revision_id != revision.NULL_REVISION:
 
91
            skip = 0
 
92
            max_count = 1000
 
93
            cms = None
 
94
            while cms != []:
 
95
                cms = self._git.commits(ids.convert_revision_id_bzr_to_git(revision_id), max_count=max_count, skip=skip)
 
96
                skip += max_count
 
97
                ret += [ids.convert_revision_id_git_to_bzr(cm.id) for cm in cms]
 
98
        return [None] + ret
150
99
 
151
100
    def get_signature_text(self, revision_id):
152
101
        raise errors.NoSuchRevision(self, revision_id)
153
102
 
154
 
    def lookup_revision_id(self, revid):
155
 
        """Lookup a revision id.
156
 
        
157
 
        :param revid: Bazaar revision id.
158
 
        :return: Tuple with git revisionid and mapping.
159
 
        """
160
 
        # Yes, this doesn't really work, but good enough as a stub
161
 
        return osutils.sha(rev_id).hexdigest(), self.get_mapping()
162
 
 
163
103
    def has_signature_for_revision_id(self, revision_id):
164
104
        return False
165
105
 
166
 
    def lookup_git_revid(self, bzr_revid, mapping):
167
 
        try:
168
 
            return mapping.revision_id_bzr_to_foreign(bzr_revid)
169
 
        except errors.InvalidRevisionId:
170
 
            raise errors.NoSuchRevision(self, bzr_revid)
 
106
    def get_parent_map(self, revision_ids):
 
107
        ret = {}
 
108
        for revid in revision_ids:
 
109
            if revid == revision.NULL_REVISION:
 
110
                ret[revid] = ()
 
111
            else:
 
112
                commit = self._git.commit(ids.convert_revision_id_bzr_to_git(revid))
 
113
                ret[revid] = tuple([ids.convert_revision_id_git_to_bzr(p.id) for p in commit.parents])
 
114
        return ret
171
115
 
172
116
    def get_revision(self, revision_id):
173
 
        git_commit_id = self.lookup_git_revid(revision_id, self.get_mapping())
174
 
        try:
175
 
            commit = self._git.commit(git_commit_id)
176
 
        except KeyError:
177
 
            raise errors.NoSuchRevision(self, revision_id)
 
117
        git_commit_id = ids.convert_revision_id_bzr_to_git(revision_id)
 
118
        commit = self._git.commit(git_commit_id)
178
119
        # print "fetched revision:", git_commit_id
179
 
        revision = self.get_mapping().import_commit(commit)
180
 
        assert revision is not None
 
120
        revision = self._parse_rev(commit)
181
121
        return revision
182
122
 
183
123
    def has_revision(self, revision_id):
184
124
        try:
185
125
            self.get_revision(revision_id)
186
 
        except errors.NoSuchRevision:
 
126
        except NoSuchRevision:
187
127
            return False
188
128
        else:
189
129
            return True
190
130
 
191
 
    def get_revisions(self, revids):
192
 
        return [self.get_revision(r) for r in revids]
 
131
    def get_revisions(self, revisions):
 
132
        return [self.get_revision(r) for r in revisions]
 
133
 
 
134
    @classmethod
 
135
    def _parse_rev(klass, commit):
 
136
        """Convert a git commit to a bzr revision.
 
137
 
 
138
        :return: a `bzrlib.revision.Revision` object.
 
139
        """
 
140
        rev = revision.Revision(ids.convert_revision_id_git_to_bzr(commit.id))
 
141
        rev.parent_ids = tuple([ids.convert_revision_id_git_to_bzr(p.id) for p in commit.parents])
 
142
        rev.inventory_sha1 = ""
 
143
        rev.message = commit.message.decode("utf-8", "replace")
 
144
        rev.committer = str(commit.committer)
 
145
        rev.properties['author'] = str(commit.author)
 
146
        rev.timestamp = time.mktime(commit.committed_date)
 
147
        rev.timezone = 0
 
148
        return rev
193
149
 
194
150
    def revision_trees(self, revids):
195
151
        for revid in revids:
203
159
            inv.revision_id = revision_id
204
160
            return revisiontree.RevisionTree(self, inv, revision_id)
205
161
 
206
 
        return GitRevisionTree(self, self.get_mapping(), revision_id)
 
162
        return GitRevisionTree(self, revision_id)
207
163
 
208
164
    def get_inventory(self, revision_id):
209
165
        assert revision_id != None
210
166
        return self.revision_tree(revision_id).inventory
211
167
 
212
 
    def set_make_working_trees(self, trees):
213
 
        pass
214
 
 
215
 
    def fetch_objects(self, determine_wants, graph_walker, progress=None):
216
 
        return self._git.fetch_objects(determine_wants, graph_walker, progress)
 
168
 
 
169
def escape_file_id(file_id):
 
170
    return file_id.replace('_', '__').replace(' ', '_s')
 
171
 
 
172
 
 
173
def unescape_file_id(file_id):
 
174
    return file_id.replace("_s", " ").replace("__", "_")
217
175
 
218
176
 
219
177
class GitRevisionTree(revisiontree.RevisionTree):
220
178
 
221
 
    def __init__(self, repository, mapping, revision_id):
 
179
    def __init__(self, repository, revision_id):
222
180
        self._repository = repository
223
181
        self.revision_id = revision_id
224
 
        assert isinstance(revision_id, str)
225
 
        self.mapping = mapping
226
 
        git_id = repository.lookup_git_revid(revision_id, self.mapping)
227
 
        try:
228
 
            commit = repository._git.commit(git_id)
229
 
        except KeyError, r:
230
 
            raise errors.NoSuchRevision(repository, revision_id)
231
 
        self.tree = commit.tree
 
182
        git_id = ids.convert_revision_id_bzr_to_git(revision_id)
 
183
        self.tree = repository._git.commit(git_id).tree
232
184
        self._inventory = inventory.Inventory(revision_id=revision_id)
233
185
        self._inventory.root.revision = revision_id
234
186
        self._build_inventory(self.tree, self._inventory.root, "")
239
191
    def get_file_text(self, file_id):
240
192
        entry = self._inventory[file_id]
241
193
        if entry.kind == 'directory': return ""
242
 
        return self._repository._git.get_blob(entry.text_id).data
 
194
        return self._repository._git.blob(entry.text_id).data
243
195
 
244
 
    def _build_inventory(self, tree_id, ie, path):
 
196
    def _build_inventory(self, tree, ie, path):
245
197
        assert isinstance(path, str)
246
 
        tree = self._repository._git.tree(tree_id)
247
 
        for mode, name, hexsha in tree.entries():
248
 
            basename = name.decode("utf-8")
 
198
        for b in tree.contents:
 
199
            basename = b.name.decode("utf-8")
249
200
            if path == "":
250
 
                child_path = name
 
201
                child_path = b.name
251
202
            else:
252
 
                child_path = urlutils.join(path, name)
253
 
            file_id = self.mapping.generate_file_id(child_path)
254
 
            entry_kind = (mode & 0700000) / 0100000
255
 
            if entry_kind == 0:
 
203
                child_path = urlutils.join(path, b.name)
 
204
            file_id = escape_file_id(child_path.encode('utf-8'))
 
205
            if b.mode[0] == '0':
256
206
                child_ie = inventory.InventoryDirectory(file_id, basename, ie.file_id)
257
 
            elif entry_kind == 1:
258
 
                file_kind = (mode & 070000) / 010000
259
 
                b = self._repository._git.get_blob(hexsha)
260
 
                if file_kind == 0:
 
207
            elif b.mode[0] == '1':
 
208
                if b.mode[1] == '0':
261
209
                    child_ie = inventory.InventoryFile(file_id, basename, ie.file_id)
262
210
                    child_ie.text_sha1 = osutils.sha_string(b.data)
263
 
                elif file_kind == 2:
 
211
                elif b.mode[1] == '2':
264
212
                    child_ie = inventory.InventoryLink(file_id, basename, ie.file_id)
265
213
                    child_ie.text_sha1 = osutils.sha_string("")
266
214
                else:
267
215
                    raise AssertionError(
268
 
                        "Unknown file kind, perms=%o." % (mode,))
 
216
                        "Unknown file kind, perms=%r." % (b.mode,))
269
217
                child_ie.text_id = b.id
270
 
                child_ie.text_size = len(b.data)
 
218
                child_ie.text_size = b.size
271
219
            else:
272
220
                raise AssertionError(
273
 
                    "Unknown blob kind, perms=%r." % (mode,))
274
 
            fs_mode = mode & 0777
275
 
            child_ie.executable = bool(fs_mode & 0111)
 
221
                    "Unknown blob kind, perms=%r." % (b.mode,))
 
222
            child_ie.executable = bool(int(b.mode[3:], 8) & 0111)
276
223
            child_ie.revision = self.revision_id
277
224
            self._inventory.add(child_ie)
278
 
            if entry_kind == 0:
279
 
                self._build_inventory(hexsha, child_ie, child_path)
 
225
            if b.mode[0] == '0':
 
226
                self._build_inventory(b, child_ie, child_path)
280
227
 
281
228
 
282
229
class GitFormat(object):
283
230
 
284
231
    supports_tree_reference = False
285
 
    rich_root_data = True
286
232
 
287
233
    def get_format_description(self):
288
234
        return "Git Repository"
289
 
 
290
 
    def initialize(self, url, shared=False, _internal=False):
291
 
        raise bzr_errors.UninitializableFormat(self)
292
 
 
293
 
    def check_conversion_target(self, target_repo_format):
294
 
        return target_repo_format.rich_root_data