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repository.py
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# Copyright (C) 2007 Canonical Ltd
 
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# Copyright (C) 2008-2009 Jelmer Vernooij <jelmer@samba.org>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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"""An adapter between a Git Repository and a Bazaar Branch"""
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19
 
import os
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import time
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import bzrlib
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from bzrlib import (
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    errors,
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    urlutils,
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    )
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from bzrlib.foreign import (
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        ForeignRepository,
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        )
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from bzrlib.trace import mutter
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from bzrlib.transport import get_transport
 
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    ForeignRepository,
 
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    )
 
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from bzrlib.trace import (
 
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    mutter,
 
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    )
 
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from bzrlib.transport import (
 
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    get_transport,
 
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    )
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41
 
 
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from bzrlib.plugins.git.commit import (
 
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    GitCommitBuilder,
 
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    )
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from bzrlib.plugins.git.foreign import (
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    versionedfiles,
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    )
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from bzrlib.plugins.git.mapping import default_mapping, mapping_registry
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from bzrlib.plugins.git.versionedfiles import GitTexts
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46
 
import dulwich as git
 
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from bzrlib.plugins.git.inventory import (
 
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    GitInventory,
 
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    )
 
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from bzrlib.plugins.git.mapping import (
 
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    default_mapping,
 
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    foreign_git,
 
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    mapping_registry,
 
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    )
 
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from bzrlib.plugins.git.versionedfiles import (
 
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    GitTexts,
 
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    )
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59
 
48
60
 
49
61
class GitTags(object):
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    """An adapter to git repositories for bzr."""
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61
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    _serializer = None
 
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    _commit_builder_class = GitCommitBuilder
 
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    vcs = foreign_git
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63
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    def __init__(self, gitdir, lockfiles):
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        ForeignRepository.__init__(self, GitFormat(), gitdir, lockfiles)
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        from bzrlib.plugins.git import fetch
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        repository.InterRepository.register_optimiser(fetch.InterGitRepository)
67
 
        repository.InterRepository.register_optimiser(fetch.InterGitNonGitRepository)
 
78
        ForeignRepository.__init__(self, GitRepositoryFormat(), gitdir, 
 
79
            lockfiles)
 
80
        from bzrlib.plugins.git import fetch, push
 
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        for optimiser in [fetch.InterRemoteGitNonGitRepository, 
 
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                          fetch.InterLocalGitNonGitRepository,
 
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                          fetch.InterGitGitRepository,
 
84
                          push.InterToLocalGitRepository,
 
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                          push.InterToRemoteGitRepository]:
 
86
            repository.InterRepository.register_optimiser(optimiser)
68
87
 
69
88
    def is_shared(self):
70
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        return True
82
101
    def make_working_trees(self):
83
102
        return True
84
103
 
 
104
    def dfetch(self, source, stop_revision):
 
105
        interrepo = repository.InterRepository.get(source, self)
 
106
        return interrepo.dfetch(stop_revision)
 
107
 
 
108
    def dfetch_refs(self, source, stop_revision):
 
109
        interrepo = repository.InterRepository.get(source, self)
 
110
        return interrepo.dfetch_refs(stop_revision)
 
111
 
85
112
 
86
113
class LocalGitRepository(GitRepository):
 
114
    """Git repository on the file system."""
87
115
 
88
116
    def __init__(self, gitdir, lockfiles):
89
117
        # FIXME: This also caches negatives. Need to be more careful 
101
129
 
102
130
    def all_revision_ids(self):
103
131
        ret = set([revision.NULL_REVISION])
104
 
        if self._git.heads() == []:
 
132
        heads = self._git.heads()
 
133
        if heads == {}:
105
134
            return ret
106
 
        bzr_heads = [self.get_mapping().revision_id_foreign_to_bzr(h) for h in self._git.heads()]
 
135
        bzr_heads = [self.get_mapping().revision_id_foreign_to_bzr(h) for h in heads.itervalues()]
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136
        ret = set(bzr_heads)
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137
        graph = self.get_graph()
109
138
        for rev, parents in graph.iter_ancestry(bzr_heads):
110
139
            ret.add(rev)
111
140
        return ret
112
141
 
113
 
    #def get_revision_delta(self, revision_id):
114
 
    #    parent_revid = self.get_revision(revision_id).parent_ids[0]
115
 
    #    diff = self._git.diff(ids.convert_revision_id_bzr_to_git(parent_revid),
116
 
    #                   ids.convert_revision_id_bzr_to_git(revision_id))
117
 
 
118
142
    def _make_parents_provider(self):
119
143
        """See Repository._make_parents_provider()."""
120
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        return self._parents_provider
121
145
 
122
146
    def get_parent_map(self, revids):
123
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        parent_map = {}
124
 
        mutter("get_parent_map(%r)", revids)
125
148
        for revision_id in revids:
126
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            assert isinstance(revision_id, str)
127
150
            if revision_id == revision.NULL_REVISION:
139
162
        """See Repository.get_ancestry().
140
163
        """
141
164
        if revision_id is None:
142
 
            return self._all_revision_ids()
 
165
            return [None, revision.NULL_REVISION] + self._all_revision_ids()
143
166
        assert isinstance(revision_id, str)
144
167
        ancestry = []
145
168
        graph = self.get_graph()
146
169
        for rev, parents in graph.iter_ancestry([revision_id]):
147
 
            if rev == revision.NULL_REVISION:
148
 
                rev = None
149
170
            ancestry.append(rev)
150
171
        ancestry.reverse()
151
 
        return ancestry
152
 
 
153
 
    def import_revision_gist(self, source, revid):
154
 
        pass
155
 
 
156
 
    def dfetch(self, source, stop_revision):
157
 
        if stop_revision is None:
158
 
            raise NotImplementedError
159
 
        revidmap = {}
160
 
        todo = []
161
 
        source.lock_read()
162
 
        try:
163
 
            graph = source.get_graph()
164
 
            for revid, parents in graph.iter_ancestry([stop_revision]):
165
 
                if not self.has_revision(revid):
166
 
                    todo.append(revid)
167
 
            pb = ui.ui_factory.nested_progress_bar()
168
 
            try:
169
 
                for i, revid in enumerate(reversed(todo)):
170
 
                    pb.update("pushing revisions", i, len(todo))
171
 
                    revidmap[revid] = self.import_revision_gist(source, revid)
172
 
            finally:
173
 
                pb.finished()
174
 
        finally:
175
 
            source.unlock()
176
 
        return revidmap
 
172
        return [None] + ancestry
177
173
 
178
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    def get_signature_text(self, revision_id):
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        raise errors.NoSuchRevision(self, revision_id)
224
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225
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    def revision_tree(self, revision_id):
226
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        revision_id = revision.ensure_null(revision_id)
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228
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        if revision_id == revision.NULL_REVISION:
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            inv = inventory.Inventory(root_id=None)
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            inv.revision_id = revision_id
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            return revisiontree.RevisionTree(self, inv, revision_id)
232
 
 
233
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        return GitRevisionTree(self, revision_id)
234
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235
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    def get_inventory(self, revision_id):
239
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    def set_make_working_trees(self, trees):
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        pass
241
235
 
242
 
    def fetch_objects(self, determine_wants, graph_walker, progress=None):
 
236
    def fetch_objects(self, determine_wants, graph_walker, resolve_ext_ref,
 
237
        progress=None):
243
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        return self._git.fetch_objects(determine_wants, graph_walker, progress)
244
239
 
245
240
 
247
242
 
248
243
    def __init__(self, repository, revision_id):
249
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        self._repository = repository
250
 
        self.revision_id = revision_id
 
245
        self._revision_id = revision_id
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        assert isinstance(revision_id, str)
252
247
        git_id, self.mapping = repository.lookup_git_revid(revision_id)
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        try:
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        except KeyError, r:
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            raise errors.NoSuchRevision(repository, revision_id)
257
252
        self.tree = commit.tree
258
 
        self._inventory = inventory.Inventory(revision_id=revision_id)
259
 
        self._inventory.root.revision = revision_id
260
 
        self._build_inventory(self.tree, self._inventory.root, "")
 
253
        self._inventory = GitInventory(self.tree, self.mapping, repository._git.object_store, revision_id)
261
254
 
262
255
    def get_revision_id(self):
263
 
        return self.revision_id
 
256
        return self._revision_id
264
257
 
265
258
    def get_file_text(self, file_id):
266
259
        entry = self._inventory[file_id]
267
260
        if entry.kind == 'directory': return ""
268
 
        return self._repository._git.get_blob(entry.text_id).data
269
 
 
270
 
    def _build_inventory(self, tree_id, ie, path):
271
 
        assert isinstance(path, str)
272
 
        tree = self._repository._git.tree(tree_id)
273
 
        for mode, name, hexsha in tree.entries():
274
 
            basename = name.decode("utf-8")
275
 
            if path == "":
276
 
                child_path = name
277
 
            else:
278
 
                child_path = urlutils.join(path, name)
279
 
            file_id = self.mapping.generate_file_id(child_path)
280
 
            entry_kind = (mode & 0700000) / 0100000
281
 
            if entry_kind == 0:
282
 
                child_ie = inventory.InventoryDirectory(file_id, basename, ie.file_id)
283
 
            elif entry_kind == 1:
284
 
                file_kind = (mode & 070000) / 010000
285
 
                b = self._repository._git.get_blob(hexsha)
286
 
                if file_kind == 0:
287
 
                    child_ie = inventory.InventoryFile(file_id, basename, ie.file_id)
288
 
                    child_ie.text_sha1 = osutils.sha_string(b.data)
289
 
                elif file_kind == 2:
290
 
                    child_ie = inventory.InventoryLink(file_id, basename, ie.file_id)
291
 
                    child_ie.text_sha1 = osutils.sha_string("")
292
 
                else:
293
 
                    raise AssertionError(
294
 
                        "Unknown file kind, perms=%o." % (mode,))
295
 
                child_ie.text_id = b.id
296
 
                child_ie.text_size = len(b.data)
297
 
            else:
298
 
                raise AssertionError(
299
 
                    "Unknown blob kind, perms=%r." % (mode,))
300
 
            fs_mode = mode & 0777
301
 
            child_ie.executable = bool(fs_mode & 0111)
302
 
            child_ie.revision = self.revision_id
303
 
            self._inventory.add(child_ie)
304
 
            if entry_kind == 0:
305
 
                self._build_inventory(hexsha, child_ie, child_path)
306
 
 
307
 
 
308
 
class GitFormat(object):
 
261
        return entry.object.data
 
262
 
 
263
 
 
264
class GitRepositoryFormat(repository.RepositoryFormat):
 
265
    """Git repository format."""
309
266
 
310
267
    supports_tree_reference = False
311
268
    rich_root_data = True