46 строки
1.4 KiB
Python
46 строки
1.4 KiB
Python
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#!/usr/bin/env python
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# Copyright (c) 2012 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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"""Wipes out a directory recursively and then touches a stamp file.
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This odd pairing of operations is used to support build scripts which
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slurp up entire directories (e.g. build/android/javac.py when handling
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generated sources) as inputs.
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The general pattern of use is:
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- Add a target which generates |gen_sources| into |out_path| from |inputs|.
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- Include |stamp_file| as an input for that target or any of its rules which
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generate files in |out_path|.
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- Add an action which depends on |inputs| and which outputs |stamp_file|;
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the action should run this script and pass |out_path| and |stamp_file| as
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its arguments.
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The net result is that you will force |out_path| to be wiped and all
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|gen_sources| to be regenerated any time any file in |inputs| changes.
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See //third_party/mojo/mojom_bindings_generator.gypi for an example use case.
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"""
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import errno
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import os
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import shutil
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import sys
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def Main(dst_dir, stamp_file):
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try:
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shutil.rmtree(os.path.normpath(dst_dir))
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except OSError as e:
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# Ignore only "not found" errors.
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if e.errno != errno.ENOENT:
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raise e
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with open(stamp_file, 'a'):
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os.utime(stamp_file, None)
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if __name__ == '__main__':
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sys.exit(Main(sys.argv[1], sys.argv[2]))
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