mirror of
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70 lines
1.9 KiB
Python
70 lines
1.9 KiB
Python
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# Copyright 2017 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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"""Recursively create hardlink to target named output."""
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import argparse
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import os
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import shutil
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def CreateHardlinkHelper(target, output):
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"""Recursively create a hardlink named output pointing to target.
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Args:
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target: path to an existing file or directory
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output: path to the newly created hardlink
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This function assumes that output does not exists but that the parent
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directory containing output does. If those conditions are false, then
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the function will fails with an exception corresponding to an OS error.
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"""
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if os.path.islink(target):
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os.symlink(os.readlink(target), output)
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elif not os.path.isdir(target):
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try:
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os.link(target, output)
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except:
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shutil.copy(target, output)
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else:
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os.mkdir(output)
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for name in os.listdir(target):
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CreateHardlinkHelper(
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os.path.join(target, name),
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os.path.join(output, name))
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def CreateHardlink(target, output):
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"""Recursively create a hardlink named output pointing to target.
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Args:
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target: path to an existing file or directory
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output: path to the newly created hardlink
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If output already exists, it is first removed. In all cases, the
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parent directory containing output is created.
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"""
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if os.path.exists(output):
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shutil.rmtree(output)
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parent_dir = os.path.dirname(os.path.abspath(output))
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if not os.path.isdir(parent_dir):
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os.makedirs(parent_dir)
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CreateHardlinkHelper(target, output)
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def Main():
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parser = argparse.ArgumentParser()
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parser.add_argument('target', help='path to the file or directory to link to')
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parser.add_argument('output', help='name of the hardlink to create')
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args = parser.parse_args()
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CreateHardlink(args.target, args.output)
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if __name__ == '__main__':
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Main()
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