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#!/usr/bin/python
#
# Copyright 2009 Canonical Ltd. This software is licensed under the
# GNU Affero General Public License version 3 (see the file LICENSE).
"""Move a python module in the tree.
It uses bzr mv to rename the module and will try to find all imports.
rename-module.py src_file+ target
Both files must be under lib/.
If more than one src files is given, target must be a directory.
"""
__metaclass__ = type
__all__ = [
'bzr_add',
'bzr_has_filename',
'bzr_move_file',
'bzr_remove_file',
'rename_module',
'update_references',
]
import os
import sys
from bzrlib import workingtree
from find import find_matches
from utils import fail, log
def file2module(module_file):
"""From a filename, return the python module name."""
start_path = 'lib' + os.path.sep
assert module_file.startswith(start_path), (
"File should start with lib: %s" % module_file)
assert module_file.endswith('.py'), (
"File should end with .py: %s" % module_file)
return module_file[len(start_path):-3].replace(os.path.sep, '.')
# Cache the working tree for speed.
_wt = workingtree.WorkingTree.open('.')
def bzr_move_file(src_file, target):
"""Move or rename a versioned file or directory."""
if os.path.isdir(target):
_wt.move([src_file], target)
else:
_wt.rename_one(src_file, target)
log(' Renamed %s => %s', src_file, target)
def bzr_add(paths):
"Version a list of paths."
_wt.add(paths)
def bzr_remove_file(filename):
"""Remove a versioned file."""
_wt.remove([filename], keep_files=False, force=True)
def bzr_has_filename(file_path):
"""Is the file versioned?"""
_wt.has_filename(file_path)
def rename_module(src_file, target_file):
"""Renamed a versioned module and update all references to it."""
# Move the file using bzr.
bzr_move_file(src_file, target_file)
if not src_file.endswith('.py'):
# It's not a module, so don't try to update imports of it.
return
source_module = file2module(src_file)
target_module = file2module(target_file)
update_references(source_module, target_module)
def update_references(source_module, target_module):
"""Update references to the source module.
:param src_module: a string describing the old module name. May contain
RE patterns
:param target_module: a string representing the new module name. May
contain RE groups.
"""
source = r'\b%s\b' % source_module.replace('.', '\\.')
target = target_module
root_dirs = ['cronscripts', 'lib/canonical', 'lib/lp']
file_pattern = '\.(py|txt|zcml)$'
print " Updating references:"
for root_dir in root_dirs:
for summary in find_matches(
root_dir, file_pattern, source, substitution=target):
print " * %(file_path)s" % summary
def main():
"""Rename a module and update all references to it."""
if len(sys.argv) < 3:
fail('Usage: %s src_file+ target', os.path.basename(sys.argv[0]))
src_files = sys.argv[1:-1]
target = sys.argv[-1]
if os.path.exists(target) and not os.path.isdir(target):
fail('Destination file "%s" already exists.', target)
if not target.startswith('lib'):
fail('Destination file "%s" must be under lib.', target)
if len(src_files) > 1 and not os.path.isdir(target):
fail('Destination must be a directory.')
for src_file in src_files:
if not os.path.exists(src_file):
log('Source file "%s" doesn\'t exists. Skipping', src_file)
continue
if not src_file.startswith('lib'):
log('Source file "%s" must be under lib. Skipping', src_file)
continue
if os.path.isdir(target):
target_file = os.path.join(target, os.path.basename(src_file))
else:
target_file = target
rename_module(src_file, target_file)
if __name__ == '__main__':
main()
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