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# Copyright (C) 2009 Jelmer Vernooij <jelmer@samba.org>
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# Based on the original from bzr-svn:
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# Copyright (C) 2009 Lukas Lalinsky <lalinsky@gmail.com>
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# Copyright (C) 2009 Jelmer Vernooij <jelmer@samba.org>
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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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# 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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# 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 in "bzr send" for git-am style patches."""
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branch as _mod_branch,
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revision as _mod_revision,
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from bzrlib.merge_directive import BaseMergeDirective
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from bzrlib.plugins.git import (
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version_info as bzr_git_version_info,
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from bzrlib.plugins.git.mapping import (
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from bzrlib.plugins.git.object_store import (
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from cStringIO import StringIO
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__version__ as dulwich_version,
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from dulwich.objects import (
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version_tail = "bzr %s, bzr-git %d.%d.%d, dulwich %d.%d.%d" % (
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(bzrlib.__version__, ) + bzr_git_version_info[:3] + dulwich_version[:3])
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class GitDiffTree(_mod_diff.DiffTree):
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"""Provides a text representation between two trees, formatted for svn."""
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def _show_diff(self, specific_files, extra_trees):
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from dulwich.patch import write_blob_diff
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iterator = self.new_tree.iter_changes(self.old_tree,
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specific_files=specific_files, extra_trees=extra_trees,
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require_versioned=True)
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def get_encoded_path(path):
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return path.encode(self.path_encoding, "replace")
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def get_file_mode(tree, path, kind, executable):
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return object_mode(kind, executable)
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def get_blob(present, tree, file_id):
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return Blob.from_string(tree.get_file(file_id).read())
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trees = (self.old_tree, self.new_tree)
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for (file_id, paths, changed_content, versioned, parent, name, kind,
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executable) in iterator:
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# The root does not get diffed, and items with no known kind (that
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# is, missing) in both trees are skipped as well.
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if parent == (None, None) or kind == (None, None):
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path_encoded = (get_encoded_path(paths[0]),
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get_encoded_path(paths[1]))
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present = ((kind[0] not in (None, 'directory')),
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(kind[1] not in (None, 'directory')))
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if not present[0] and not present[1]:
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contents = (get_blob(present[0], trees[0], file_id),
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get_blob(present[1], trees[1], file_id))
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renamed = (parent[0], name[0]) != (parent[1], name[1])
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mode = (get_file_mode(trees[0], path_encoded[0],
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kind[0], executable[0]),
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get_file_mode(trees[1], path_encoded[1],
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kind[1], executable[1]))
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write_blob_diff(self.to_file,
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(path_encoded[0], mode[0], contents[0]),
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(path_encoded[1], mode[1], contents[1]))
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has_changes |= (changed_content or renamed)
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class GitMergeDirective(BaseMergeDirective):
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multiple_output_files = True
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def __init__(self, revision_id, testament_sha1, time, timezone,
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target_branch, source_branch=None, message=None,
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super(GitMergeDirective, self).__init__(revision_id=revision_id,
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testament_sha1=testament_sha1, time=time, timezone=timezone,
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target_branch=target_branch, patch=None,
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source_branch=source_branch, message=message, bundle=None)
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self.patches = patches
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return self.patch.splitlines(True)
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def _generate_commit(cls, repository, revision_id, num, total):
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store = get_object_store(repository)
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commit = store[store._lookup_revision_sha1(revision_id)]
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from dulwich.patch import write_commit_patch, get_summary
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lhs_parent = repository.get_revision(revision_id).parent_ids[0]
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lhs_parent = _mod_revision.NULL_REVISION
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tree_1 = repository.revision_tree(lhs_parent)
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tree_2 = repository.revision_tree(revision_id)
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contents = StringIO()
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differ = GitDiffTree.from_trees_options(tree_1, tree_2,
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contents, 'utf8', None, 'a/', 'b/', None)
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differ.show_diff(None, None)
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write_commit_patch(s, commit, contents.getvalue(), (num, total),
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summary = "%04d-%s.patch" % (num, get_summary(commit).rstrip("."))
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return summary, s.getvalue()
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def from_objects(cls, repository, revision_id, time, timezone,
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target_branch, local_target_branch=None,
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public_branch=None, message=None):
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submit_branch = _mod_branch.Branch.open(target_branch)
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submit_branch.lock_read()
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submit_revision_id = submit_branch.last_revision()
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repository.fetch(submit_branch.repository, submit_revision_id)
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graph = repository.get_graph()
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todo = graph.find_difference(submit_revision_id, revision_id)[1]
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for i, revid in enumerate(graph.iter_topo_order(todo)):
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patches.append(cls._generate_commit(repository, revid, i+1,
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submit_branch.unlock()
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return cls(revision_id, None, time, timezone,
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target_branch=target_branch, source_branch=public_branch,
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message=message, patches=patches)
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def send_git(branch, revision_id, submit_branch, public_branch, no_patch,
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no_bundle, message, base_revision_id):
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raise errors.BzrCommandError("no patch not supported for git-am style patches")
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raise errors.BzrCommandError("no bundle not supported for git-am style patches")
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return GitMergeDirective.from_objects(
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branch.repository, revision_id, time.time(),
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osutils.local_time_offset(), submit_branch,
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public_branch=public_branch, message=message)
added
removed
send.py
