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126 lines
4.5 KiB
Python
Executable File
126 lines
4.5 KiB
Python
Executable File
#!/usr/bin/env vpython
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# Copyright 2016 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""Prints all non-system dependencies for the given module.
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The primary use-case for this script is to genererate the list of python modules
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required for .isolate files.
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"""
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import argparse
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import imp
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import os
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import pipes
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import sys
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# Don't use any helper modules, or else they will end up in the results.
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_SRC_ROOT = os.path.abspath(os.path.join(os.path.dirname(__file__), os.pardir))
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def _ComputePythonDependencies():
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"""Gets the paths of imported non-system python modules.
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A path is assumed to be a "system" import if it is outside of chromium's
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src/. The paths will be relative to the current directory.
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"""
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module_paths = (m.__file__ for m in sys.modules.values()
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if m and hasattr(m, '__file__'))
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src_paths = set()
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for path in module_paths:
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if path == __file__:
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continue
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path = os.path.abspath(path)
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if not path.startswith(_SRC_ROOT):
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continue
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if (path.endswith('.pyc')
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or (path.endswith('c') and not os.path.splitext(path)[1])):
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path = path[:-1]
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src_paths.add(path)
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return src_paths
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def _NormalizeCommandLine(options):
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"""Returns a string that when run from SRC_ROOT replicates the command."""
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args = ['build/print_python_deps.py']
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root = os.path.relpath(options.root, _SRC_ROOT)
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if root != '.':
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args.extend(('--root', root))
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if options.output:
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args.extend(('--output', os.path.relpath(options.output, _SRC_ROOT)))
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for whitelist in sorted(options.whitelists):
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args.extend(('--whitelist', os.path.relpath(whitelist, _SRC_ROOT)))
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args.append(os.path.relpath(options.module, _SRC_ROOT))
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return ' '.join(pipes.quote(x) for x in args)
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def _FindPythonInDirectory(directory):
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"""Returns an iterable of all non-test python files in the given directory."""
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files = []
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for root, _dirnames, filenames in os.walk(directory):
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for filename in filenames:
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if filename.endswith('.py') and not filename.endswith('_test.py'):
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yield os.path.join(root, filename)
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def main():
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parser = argparse.ArgumentParser(
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description='Prints all non-system dependencies for the given module.')
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parser.add_argument('module',
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help='The python module to analyze.')
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parser.add_argument('--root', default='.',
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help='Directory to make paths relative to.')
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parser.add_argument('--output',
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help='Write output to a file rather than stdout.')
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parser.add_argument('--inplace', action='store_true',
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help='Write output to a file with the same path as the '
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'module, but with a .pydeps extension. Also sets the '
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'root to the module\'s directory.')
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parser.add_argument('--no-header', action='store_true',
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help='Do not write the "# Generated by" header.')
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parser.add_argument('--gn-paths', action='store_true',
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help='Write paths as //foo/bar/baz.py')
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parser.add_argument('--whitelist', default=[], action='append',
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dest='whitelists',
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help='Recursively include all non-test python files '
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'within this directory. May be specified multiple times.')
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options = parser.parse_args()
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# Replace the path entry for print_python_deps.py with the one for the given
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# module.
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sys.path[0] = os.path.dirname(options.module)
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imp.load_source('NAME', options.module)
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if options.inplace:
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if options.output:
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parser.error('Cannot use --inplace and --output at the same time!')
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if not options.module.endswith('.py'):
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parser.error('Input module path should end with .py suffix!')
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options.output = options.module + 'deps'
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options.root = os.path.dirname(options.module)
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paths_set = _ComputePythonDependencies()
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for path in options.whitelists:
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paths_set.update(os.path.abspath(p) for p in _FindPythonInDirectory(path))
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paths = [os.path.relpath(p, options.root) for p in paths_set]
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normalized_cmdline = _NormalizeCommandLine(options)
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out = open(options.output, 'w') if options.output else sys.stdout
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with out:
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if not options.no_header:
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out.write('# Generated by running:\n')
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out.write('# %s\n' % normalized_cmdline)
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prefix = '//' if options.gn_paths else ''
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for path in sorted(paths):
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out.write(prefix + path + '\n')
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if __name__ == '__main__':
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sys.exit(main())
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