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#!/usr/bin/env python
# Copyright 2016 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Prints all non-system dependencies for the given module.
The primary use-case for this script is to genererate the list of python modules
required for .isolate files.
"""
import argparse
import imp
import os
import pipes
import sys
# Don't use any helper modules, or else they will end up in the results.
_SRC_ROOT = os.path.abspath(os.path.join(os.path.dirname(__file__), os.pardir))
def ComputePythonDependencies(root):
"""Gets the paths of imported non-system python modules.
A path is assumed to be a "system" import if it is outside of chromium's
src/. The paths will be relative to the current directory.
"""
module_paths = (m.__file__ for m in sys.modules.values()
if m and hasattr(m, '__file__'))
src_paths = set()
for path in module_paths:
if path == __file__:
continue
path = os.path.abspath(path)
if not path.startswith(_SRC_ROOT):
continue
if path.endswith('.pyc'):
path = path[:-1]
src_paths.add(os.path.relpath(path, root))
return sorted(src_paths)
def main():
parser = argparse.ArgumentParser(
description='Prints all non-system dependencies for the given module.')
parser.add_argument('module',
help='The python module to analyze.')
parser.add_argument('--root', default='.',
help='Directory to make paths relative to.')
parser.add_argument('--output',
help='Write output to a file rather than stdout.')
options = parser.parse_args()
sys.path.append(os.path.dirname(options.module))
imp.load_source('NAME', options.module)
out = open(options.output, 'w') if options.output else sys.stdout
with out:
out.write('# Generated by //build/print_python_deps.py\n')
out.write('# root: //%s\n' % os.path.relpath(options.root, _SRC_ROOT))
out.write('# target: //%s\n' % os.path.relpath(options.module, _SRC_ROOT))
for path in ComputePythonDependencies(options.root):
out.write(path + '\n')
if __name__ == '__main__':
sys.exit(main())
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