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add basic test for tree_to_objects.

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commit.py
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# Copyright (C) 2009 Jelmer Vernooij <jelmer@samba.org>
 
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# Copyright (C) 2009-2010 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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"""Support for committing in native Git working trees."""
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from dulwich.index import (
 
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    commit_tree,
 
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    )
 
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import os
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import stat
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from bzrlib import (
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    osutils,
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    )
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from bzrlib.repository import (
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    CommitBuilder,
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    )
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from dulwich.objects import (
 
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    S_IFGITLINK,
 
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    Blob,
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    Commit,
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    Tree,
 
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    )
 
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from bzrlib.plugins.git.mapping import (
 
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    entry_mode,
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    )
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    def __init__(self, *args, **kwargs):
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        super(GitCommitBuilder, self).__init__(*args, **kwargs)
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        self._trees = {}
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    def _new_tree(self, path):
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        newtree = Tree()
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        # FIXME: Inherit children from the base revision
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        self._trees[path] = newtree
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        return newtree
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    def _add_tree(self, path):
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        if path in self._trees:
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            return self._trees[path]
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        if path == "":
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            return self._new_tree("")
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        dirname, basename = osutils.split(path)
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        t = self._add_tree(dirname)
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        assert isinstance(basename, str)
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        if not basename in t:
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            newtree = self._new_tree(path)
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            t[basename] = (stat.S_IFDIR, newtree.id)
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            return newtree
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        else:
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            return self.repository._git.object_store[t[basename][1]]
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    def _change_blob(self, path, value):
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        assert isinstance(path, str)
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        dirname, basename = osutils.split(path)
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        t = self._add_tree(dirname)
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        t[basename] = value
 
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        self.store = self.repository._git.object_store
 
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        self._blobs = {}
 
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    def record_entry_contents(self, ie, parent_invs, path, tree,
 
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        content_summary):
 
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        raise NotImplementedError(self.record_entry_contents)
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    def record_delete(self, path, file_id):
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        dirname, basename = osutils.split(path)
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        t = self._add_tree(dirname)
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        del t[basename]
 
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        self._blobs[path] = None
 
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        self._any_changes = True
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    def record_iter_changes(self, workingtree, basis_revid, iter_changes):
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        for (file_id, path, changed_content, versioned, parent, name, kind, 
 
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        index = getattr(workingtree, "index", None)
 
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        if index is not None:
 
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            def index_sha1(path, file_id):
 
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                return index.get_sha1(path.encode("utf-8"))
 
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            text_sha1 = link_sha1 = index_sha1
 
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        else:
 
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            def link_sha1(path, file_id):
 
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                blob = Blob()
 
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                blob.data = workingtree.get_symlink_target(file_id)
 
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                return blob.id
 
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            def text_sha1(path, file_id):
 
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                blob = Blob()
 
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                blob.data = workingtree.get_file_text(file_id, path)
 
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                return blob.id
 
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        for (file_id, path, changed_content, versioned, parent, name, kind,
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             executable) in iter_changes:
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            if kind[1] in ("directory",):
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                if kind[0] in ("file", "symlink"):
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                    self.record_delete(path[0], file_id)
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                continue
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            if kind == "file":
 
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            if path[1] is None:
 
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                self.record_delete(path[0], file_id)
 
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                continue
 
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            if kind[1] == "file":
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                mode = stat.S_IFREG
 
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                sha = text_sha1(path[1], file_id)
 
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            elif kind[1] == "symlink":
 
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                mode = stat.S_IFLNK
 
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                sha = link_sha1(path[1], file_id)
 
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            elif kind[1] == "tree-reference":
 
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                mode = S_IFGITLINK
 
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                sha = "FIXME"
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            else:
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                mode = stat.S_IFLNK
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            if executable:
 
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                raise AssertionError("Unknown kind %r" % kind[1])
 
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            if executable[1]:
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                mode |= 0111
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            self._change_blob(path[1].encode("utf-8"), (mode, workingtree.index.get_sha1(path[1].encode("utf-8"))))
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            yield file_id, path, (None, None)
 
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            self._any_changes = True
 
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            self._blobs[path[1].encode("utf-8")] = (mode, sha)
 
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            file_sha1 = workingtree.get_file_sha1(file_id, path[1])
 
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            yield file_id, path[1], (file_sha1, os.lstat(workingtree.abspath(path[1])))
 
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        # Fill in entries that were not changed
 
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        basis_tree = workingtree.basis_tree()
 
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        assert basis_tree.get_revision_id() == basis_revid
 
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        for path, entry in basis_tree.iter_entries_by_dir():
 
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            if entry.kind not in ("file", "symlink"):
 
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                continue
 
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            if not path in self._blobs:
 
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                blob = Blob()
 
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                if entry.kind == "symlink":
 
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                    blob.data = basis_tree.get_symlink_target(entry.file_id)
 
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                else:
 
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                    blob.data = basis_tree.get_file_text(entry.file_id)
 
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                self._blobs[path.encode("utf-8")] = (entry_mode(entry), blob.id)
 
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    def finish_inventory(self):
 
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        # eliminate blobs that were removed
 
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        for path, entry in iter(self._blobs.items()):
 
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            if entry is None:
 
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                del self._blobs[path]
 
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    def _iterblobs(self):
 
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        return ((path, sha, mode) for (path, (mode, sha)) in self._blobs.iteritems())
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    def commit(self, message):
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        # FIXME: Eliminate any empty trees recursively
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        # Write any tree objects to disk
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        for path in sorted(self._trees.keys(), reverse=True):
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            self.repository._git.object_store.add_object(self._trees[path])
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        c = Commit()
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        root_tree = self._add_tree("")
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        c._tree = root_tree.id 
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        c._committer = self._committer
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        c._author = self._revprops.get('author', self._committer)
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        c._commit_timestamp = self._timestamp
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        c._author_timestamp = self._timestamp
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        c._commit_timezone = self._timezone
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        c._author_timezone = self._timezone
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        c._message = message.encode("utf-8")
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        self.repository._git.object_store.add_object(c)
 
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        c.parents = [self.repository.lookup_bzr_revision_id(revid)[0] for revid in self.parents]
 
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        c.tree = commit_tree(self.store, self._iterblobs())
 
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        c.committer = self._committer
 
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        c.author = self._revprops.get('author', self._committer)
 
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        c.commit_time = int(self._timestamp)
 
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        c.author_time = int(self._timestamp)
 
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        c.commit_timezone = self._timezone
 
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        c.author_timezone = self._timezone
 
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        c.encoding = 'utf-8'
 
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        c.message = message.encode("utf-8")
 
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        self.store.add_object(c)
 
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        self._new_revision_id = self.repository.get_mapping().revision_id_foreign_to_bzr(c.id)
 
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        self.repository.commit_write_group()
 
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        return self._new_revision_id