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# Copyright (C) 2005, 2006 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
"""Routines for extracting all version information from a bzr branch."""
from __future__ import absolute_import
import time
from bzrlib.osutils import local_time_offset, format_date
from bzrlib import (
registry,
revision as _mod_revision,
)
def create_date_str(timestamp=None, offset=None):
"""Just a wrapper around format_date to provide the right format.
We don't want to use '%a' in the time string, because it is locale
dependant. We also want to force timezone original, and show_offset
Without parameters this function yields the current date in the local
time zone.
"""
if timestamp is None and offset is None:
timestamp = time.time()
offset = local_time_offset()
return format_date(timestamp, offset, date_fmt='%Y-%m-%d %H:%M:%S',
timezone='original', show_offset=True)
class VersionInfoBuilder(object):
"""A class which lets you build up information about a revision."""
def __init__(self, branch, working_tree=None,
check_for_clean=False,
include_revision_history=False,
include_file_revisions=False,
template=None,
revision_id=None):
"""Build up information about the given branch.
If working_tree is given, it can be checked for changes.
:param branch: The branch to work on
:param working_tree: If supplied, preferentially check
the working tree for changes.
:param check_for_clean: If False, we will skip the expense
of looking for changes.
:param include_revision_history: If True, the output
will include the full mainline revision history, including
date and message
:param include_file_revisions: The output should
include the explicit last-changed revision for each file.
:param template: Template for the output formatting, not used by
all builders.
:param revision_id: Revision id to print version for (optional)
"""
self._branch = branch
self._check = check_for_clean
self._include_history = include_revision_history
self._include_file_revs = include_file_revisions
self._template = template
self._clean = None
self._file_revisions = {}
self._revision_id = revision_id
if self._revision_id is None:
self._tree = working_tree
self._working_tree = working_tree
else:
self._tree = self._branch.repository.revision_tree(self._revision_id)
# the working tree is not relevant if an explicit revision was specified
self._working_tree = None
def _extract_file_revisions(self):
"""Extract the working revisions for all files"""
# Things seem clean if we never look :)
self._clean = True
if self._working_tree is self._tree:
basis_tree = self._working_tree.basis_tree()
# TODO: jam 20070215 The working tree should actually be locked at
# a higher level, but this will do for now.
self._working_tree.lock_read()
else:
basis_tree = self._branch.repository.revision_tree(self._revision_id)
basis_tree.lock_read()
try:
# Build up the list from the basis inventory
for info in basis_tree.list_files(include_root=True):
self._file_revisions[info[0]] = info[-1].revision
if not self._check or self._working_tree is not self._tree:
return
delta = self._working_tree.changes_from(basis_tree,
include_root=True)
# Using a 2-pass algorithm for renames. This is because you might have
# renamed something out of the way, and then created a new file
# in which case we would rather see the new marker
# Or you might have removed the target, and then renamed
# in which case we would rather see the renamed marker
for (old_path, new_path, file_id,
kind, text_mod, meta_mod) in delta.renamed:
self._clean = False
self._file_revisions[old_path] = u'renamed to %s' % (new_path,)
for path, file_id, kind in delta.removed:
self._clean = False
self._file_revisions[path] = 'removed'
for path, file_id, kind in delta.added:
self._clean = False
self._file_revisions[path] = 'new'
for (old_path, new_path, file_id,
kind, text_mod, meta_mod) in delta.renamed:
self._clean = False
self._file_revisions[new_path] = u'renamed from %s' % (old_path,)
for path, file_id, kind, text_mod, meta_mod in delta.modified:
self._clean = False
self._file_revisions[path] = 'modified'
for path in self._working_tree.unknowns():
self._clean = False
self._file_revisions[path] = 'unversioned'
finally:
basis_tree.unlock()
if self._working_tree is not None:
self._working_tree.unlock()
def _iter_revision_history(self):
"""Find the messages for all revisions in history."""
last_rev = self._get_revision_id()
repository = self._branch.repository
repository.lock_read()
try:
graph = repository.get_graph()
revhistory = list(graph.iter_lefthand_ancestry(
last_rev, [_mod_revision.NULL_REVISION]))
for revision_id in reversed(revhistory):
rev = repository.get_revision(revision_id)
yield (rev.revision_id, rev.message,
rev.timestamp, rev.timezone)
finally:
repository.unlock()
def _get_revision_id(self):
"""Get the revision id we are working on."""
if self._revision_id is not None:
return self._revision_id
if self._working_tree is not None:
return self._working_tree.last_revision()
return self._branch.last_revision()
def _get_revno_str(self, revision_id):
numbers = self._branch.revision_id_to_dotted_revno(revision_id)
revno_str = '.'.join([str(num) for num in numbers])
return revno_str
def generate(self, to_file):
"""Output the version information to the supplied file.
:param to_file: The file to write the stream to. The output
will already be encoded, so to_file should not try
to change encodings.
:return: None
"""
raise NotImplementedError(VersionInfoBuilder.generate)
format_registry = registry.Registry()
format_registry.register_lazy(
'rio',
'bzrlib.version_info_formats.format_rio',
'RioVersionInfoBuilder',
'Version info in RIO (simple text) format (default).')
format_registry.default_key = 'rio'
format_registry.register_lazy(
'python',
'bzrlib.version_info_formats.format_python',
'PythonVersionInfoBuilder',
'Version info in Python format.')
format_registry.register_lazy(
'custom',
'bzrlib.version_info_formats.format_custom',
'CustomVersionInfoBuilder',
'Version info in Custom template-based format.')
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