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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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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 (
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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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        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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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 (
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    default_mapping,
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    inventory_to_tree_and_blobs,
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    mapping_registry,
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    revision_to_commit,
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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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from bzrlib.plugins.git.mapping import default_mapping, mapping_registry, inventory_to_tree_and_blobs, revision_to_commit
 
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from bzrlib.plugins.git.versionedfiles import GitTexts
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import dulwich as git
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import os
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import time
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class GitTags(object):
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    _serializer = None
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    def __init__(self, gitdir, lockfiles):
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        ForeignRepository.__init__(self, GitRepositoryFormat(), gitdir, 
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            lockfiles)
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        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.InterGitRepository,
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                          push.InterToGitRepository]:
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            repository.InterRepository.register_optimiser(optimiser)
 
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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)
 
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        repository.InterRepository.register_optimiser(fetch.InterGitNonGitRepository)
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    def is_shared(self):
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        return True
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class LocalGitRepository(GitRepository):
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    """Git repository on the file system."""
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    def __init__(self, gitdir, lockfiles):
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        # FIXME: This also caches negatives. Need to be more careful 
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101
 
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    def all_revision_ids(self):
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        ret = set([revision.NULL_REVISION])
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        heads = self._git.heads()
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        if heads == {}:
 
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        if self._git.heads() == []:
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            return ret
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        bzr_heads = [self.get_mapping().revision_id_foreign_to_bzr(h) for h in heads.itervalues()]
 
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        bzr_heads = [self.get_mapping().revision_id_foreign_to_bzr(h) for h in self._git.heads()]
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        ret = set(bzr_heads)
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        graph = self.get_graph()
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        for rev, parents in graph.iter_ancestry(bzr_heads):
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        """See Repository.get_ancestry().
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        """
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        if revision_id is None:
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            return [None, revision.NULL_REVISION] + self._all_revision_ids()
 
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            return self._all_revision_ids()
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        assert isinstance(revision_id, str)
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        ancestry = []
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        graph = self.get_graph()
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        for rev, parents in graph.iter_ancestry([revision_id]):
 
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            if rev == revision.NULL_REVISION:
 
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                rev = None
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            ancestry.append(rev)
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        ancestry.reverse()
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        return [None] + ancestry
 
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        return ancestry
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    def import_revision_gist(self, source, revid, parent_lookup):
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        """Import the gist of a revision into this Git repository.
 
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        """Impor the gist of another revision into this Git repository.
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        """
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        objects = []
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        commit = revision_to_commit(rev, tree_sha, parent_lookup)
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        objects.append((commit, None))
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        self._git.object_store.add_objects(objects)
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        return commit.sha().hexdigest()
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    def dfetch(self, source, stop_revision):
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        """Import the gist of the ancestry of a particular revision."""
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        if stop_revision is None:
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            raise NotImplementedError
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        revidmap = {}
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        gitidmap = {}
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        def parent_lookup(revid):
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            try:
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                return gitidmap[revid]
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            except KeyError:
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                return self.lookup_git_revid(revid)[0]
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        todo = []
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        source.lock_write()
 
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        source.lock_read()
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        try:
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            graph = source.get_graph()
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            ancestry = [x for x in source.get_ancestry(stop_revision) if x is not None]
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            for revid in graph.iter_topo_order(ancestry):
 
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            for revid, parents in graph.iter_ancestry([stop_revision]):
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                if not self.has_revision(revid):
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                    todo.append(revid)
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            pb = ui.ui_factory.nested_progress_bar()
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            try:
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                for i, revid in enumerate(todo):
 
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                for i, revid in enumerate(reversed(todo)):
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                    pb.update("pushing revisions", i, len(todo))
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                    git_commit = self.import_revision_gist(source, revid,
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                        parent_lookup)
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                    gitidmap[revid] = git_commit
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                    git_revid = self.get_mapping().revision_id_foreign_to_bzr(
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                        git_commit)
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                    revidmap[revid] = git_revid
 
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                    revidmap[revid] = self.import_revision_gist(source, revid, revidmap.get)
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            finally:
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                pb.finished()
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            source.fetch(self, revision_id=revidmap[stop_revision])
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        finally:
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            source.unlock()
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        return revidmap
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    def revision_tree(self, revision_id):
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        revision_id = revision.ensure_null(revision_id)
 
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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)
 
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        return GitRevisionTree(self, revision_id)
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    def get_inventory(self, revision_id):
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    def set_make_working_trees(self, trees):
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        pass
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    def fetch_objects(self, determine_wants, graph_walker, resolve_ext_ref,
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        progress=None):
 
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    def fetch_objects(self, determine_wants, graph_walker, progress=None):
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        return self._git.fetch_objects(determine_wants, graph_walker, progress)
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    def __init__(self, repository, revision_id):
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        self._repository = repository
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        self._revision_id = revision_id
 
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        self.revision_id = revision_id
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        assert isinstance(revision_id, str)
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        git_id, self.mapping = repository.lookup_git_revid(revision_id)
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        try:
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        self._build_inventory(self.tree, self._inventory.root, "")
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    def get_revision_id(self):
303
 
        return self._revision_id
 
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        return self.revision_id
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    def get_file_text(self, file_id):
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        entry = self._inventory[file_id]
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                    child_ie.text_sha1 = osutils.sha_string(b.data)
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                elif file_kind == 2:
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                    child_ie = inventory.InventoryLink(file_id, basename, ie.file_id)
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                    child_ie.symlink_target = b.data
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                    child_ie.text_sha1 = osutils.sha_string("")
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                else:
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                    raise AssertionError(
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                    "Unknown blob kind, perms=%r." % (mode,))
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            fs_mode = mode & 0777
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            child_ie.executable = bool(fs_mode & 0111)
343
 
            # TODO: This should be set to the revision id in which 
344
 
            # child_ie was last changed instead.
345
 
            child_ie.revision = self._revision_id
 
313
            child_ie.revision = self.revision_id
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            self._inventory.add(child_ie)
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            if entry_kind == 0:
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                self._build_inventory(hexsha, child_ie, child_path)
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351
 
class GitRepositoryFormat(repository.RepositoryFormat):
 
319
class GitFormat(object):
352
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    supports_tree_reference = False
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    rich_root_data = True