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# (C) 2005 Canonical Development 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""Serializer factory for reading and writing bundles.
"""
import os
from bzrlib.bundle.serializer import (BundleSerializer,
BUNDLE_HEADER,
format_highres_date,
unpack_highres_date,
)
from bzrlib.bundle.serializer import binary_diff
from bzrlib.delta import compare_trees
from bzrlib.diff import internal_diff
import bzrlib.errors as errors
from bzrlib.osutils import pathjoin
from bzrlib.progress import DummyProgress
from bzrlib.revision import NULL_REVISION
from bzrlib.rio import RioWriter, read_stanzas
import bzrlib.ui
from bzrlib.testament import StrictTestament
from bzrlib.textfile import text_file
bool_text = {True: 'yes', False: 'no'}
class Action(object):
"""Represent an action"""
def __init__(self, name, parameters=None, properties=None):
self.name = name
if parameters is None:
self.parameters = []
else:
self.parameters = parameters
if properties is None:
self.properties = []
else:
self.properties = properties
def add_property(self, name, value):
"""Add a property to the action"""
self.properties.append((name, value))
def add_bool_property(self, name, value):
"""Add a boolean property to the action"""
self.add_property(name, bool_text[value])
def write(self, to_file):
"""Write action as to a file"""
p_texts = [' '.join([self.name]+self.parameters)]
for prop in self.properties:
if len(prop) == 1:
p_texts.append(prop[0])
else:
try:
p_texts.append('%s:%s' % prop)
except:
raise repr(prop)
text = ['=== ']
text.append(' // '.join(p_texts))
text_line = ''.join(text).encode('utf-8')
available = 79
while len(text_line) > available:
to_file.write(text_line[:available])
text_line = text_line[available:]
to_file.write('\n... ')
available = 79 - len('... ')
to_file.write(text_line+'\n')
class BundleSerializerV07(BundleSerializer):
def read(self, f):
"""Read the rest of the bundles from the supplied file.
:param f: The file to read from
:return: A list of bundles
"""
assert self.version == '0.7'
# The first line of the header should have been read
raise NotImplementedError
def write(self, source, revision_ids, forced_bases, f):
"""Write the bundless to the supplied files.
:param source: A source for revision information
:param revision_ids: The list of revision ids to serialize
:param forced_bases: A dict of revision -> base that overrides default
:param f: The file to output to
"""
self.source = source
self.revision_ids = revision_ids
self.forced_bases = forced_bases
self.to_file = f
source.lock_read()
try:
self._write_main_header()
pb = DummyProgress()
try:
self._write_revisions(pb)
finally:
pass
#pb.finished()
finally:
source.unlock()
def _write_main_header(self):
"""Write the header for the changes"""
f = self.to_file
f.write(BUNDLE_HEADER)
f.write('0.7\n')
f.write('#\n')
def _write(self, key, value, indent=1):
"""Write out meta information, with proper indenting, etc"""
assert indent > 0, 'indentation must be greater than 0'
f = self.to_file
f.write('#' + (' ' * indent))
f.write(key.encode('utf-8'))
if not value:
f.write(':\n')
elif isinstance(value, basestring):
f.write(': ')
f.write(value.encode('utf-8'))
f.write('\n')
else:
f.write(':\n')
for entry in value:
f.write('#' + (' ' * (indent+2)))
f.write(entry.encode('utf-8'))
f.write('\n')
def _write_revisions(self, pb):
"""Write the information for all of the revisions."""
# Optimize for the case of revisions in order
last_rev_id = None
last_rev_tree = None
i_max = len(self.revision_ids)
for i, rev_id in enumerate(self.revision_ids):
pb.update("Generating revsion data", i, i_max)
rev = self.source.get_revision(rev_id)
if rev_id == last_rev_id:
rev_tree = last_rev_tree
else:
base_tree = self.source.revision_tree(rev_id)
rev_tree = self.source.revision_tree(rev_id)
if rev_id in self.forced_bases:
explicit_base = True
base_id = self.forced_bases[rev_id]
if base_id is None:
base_id = NULL_REVISION
else:
explicit_base = False
if rev.parent_ids:
base_id = rev.parent_ids[-1]
else:
base_id = NULL_REVISION
if base_id == last_rev_id:
base_tree = last_rev_tree
else:
base_tree = self.source.revision_tree(base_id)
self._write_revision(rev, rev_tree, base_id, base_tree,
explicit_base)
last_rev_id = base_id
last_rev_tree = base_tree
def _write_revision(self, rev, rev_tree, base_rev, base_tree,
explicit_base):
"""Write out the information for a revision."""
def w(key, value):
self._write(key, value, indent=1)
w('message', rev.message.split('\n'))
w('committer', rev.committer)
w('date', format_highres_date(rev.timestamp, rev.timezone))
self.to_file.write('\n')
self._write_delta(rev_tree, base_tree, rev.revision_id)
w('revision id', rev.revision_id)
w('sha1', StrictTestament.from_revision(self.source,
rev.revision_id).as_sha1())
w('inventory sha1', rev.inventory_sha1)
if rev.parent_ids:
w('parent ids', rev.parent_ids)
if explicit_base:
w('base id', base_rev)
if rev.properties:
self._write('properties', None, indent=1)
for name, value in rev.properties.items():
self._write(name, value, indent=3)
# Add an extra blank space at the end
self.to_file.write('\n')
def _write_action(self, name, parameters, properties=None):
if properties is None:
properties = []
p_texts = ['%s:%s' % v for v in properties]
self.to_file.write('=== ')
self.to_file.write(' '.join([name]+parameters).encode('utf-8'))
self.to_file.write(' // '.join(p_texts).encode('utf-8'))
self.to_file.write('\n')
def _write_delta(self, new_tree, old_tree, default_revision_id):
"""Write out the changes between the trees."""
DEVNULL = '/dev/null'
old_label = ''
new_label = ''
def do_diff(file_id, old_path, new_path, action):
def tree_lines(tree, require_text=False):
if file_id in tree:
tree_file = tree.get_file(file_id)
if require_text is True:
tree_file = text_file(tree_file)
return tree_file.readlines()
else:
return []
try:
old_lines = tree_lines(old_tree, require_text=True)
new_lines = tree_lines(new_tree, require_text=True)
action.write(self.to_file)
internal_diff(old_path, old_lines, new_path, new_lines,
self.to_file)
except errors.BinaryFile:
old_lines = tree_lines(old_tree, require_text=False)
new_lines = tree_lines(new_tree, require_text=False)
action.add_property('encoding', 'base64')
action.write(self.to_file)
binary_diff(old_path, old_lines, new_path, new_lines,
self.to_file)
def finish_action(action, file_id, kind, meta_modified, text_modified,
old_path, new_path):
entry = new_tree.inventory[file_id]
if entry.revision != default_revision_id:
action.add_property('last-changed', entry.revision)
if meta_modified:
action.add_bool_property('executable', entry.executable)
if text_modified and kind == "symlink":
action.add_property('target', entry.symlink_target)
if text_modified and kind == "file":
do_diff(file_id, old_path, new_path, action)
else:
action.write(self.to_file)
delta = compare_trees(old_tree, new_tree, want_unchanged=True)
for path, file_id, kind in delta.removed:
action = Action('removed', [kind, path]).write(self.to_file)
for path, file_id, kind in delta.added:
action = Action('added', [kind, path], [('file-id', file_id)])
meta_modified = (kind=='file' and
new_tree.is_executable(file_id))
finish_action(action, file_id, kind, meta_modified, True,
DEVNULL, path)
for (old_path, new_path, file_id, kind,
text_modified, meta_modified) in delta.renamed:
action = Action('renamed', [kind, old_path], [(new_path,)])
finish_action(action, file_id, kind, meta_modified, text_modified,
old_path, new_path)
for (path, file_id, kind,
text_modified, meta_modified) in delta.modified:
action = Action('modified', [kind, path])
finish_action(action, file_id, kind, meta_modified, text_modified,
path, path)
for path, file_id, kind in delta.unchanged:
ie = new_tree.inventory[file_id]
new_rev = getattr(ie, 'revision', None)
if new_rev is None:
continue
old_rev = getattr(old_tree.inventory[ie.file_id], 'revision', None)
if new_rev != old_rev:
action = Action('modified', [ie.kind,
new_tree.id2path(ie.file_id)])
action.add_property('last-changed', ie.revision)
action.write(self.to_file)
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