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commit.py
 
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# Copyright (C) 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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# the Free Software Foundation; either version 2 of the License, or
 
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# (at your option) any later version.
 
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#
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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# GNU General Public License for more details.
 
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#
 
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# You should have received a copy of the GNU General Public License
 
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# along with this program; if not, write to the Free Software
 
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
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"""Support for committing in native Git working trees."""
 
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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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    Commit,
 
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    Tree,
 
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    )
 
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class GitCommitBuilder(CommitBuilder):
 
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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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    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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    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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             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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                mode = stat.S_IFREG
 
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            else:
 
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                mode = stat.S_IFLNK
 
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            if executable:
 
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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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    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)