64e9816429
BUG=skia:4763 GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1813443003 Review URL: https://codereview.chromium.org/1813443003
59 lines
1.7 KiB
Python
59 lines
1.7 KiB
Python
#!/usr/bin/env python
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#
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# Copyright 2016 Google Inc.
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#
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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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"""Utilities for manipulating the win_toolchain.json file."""
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import json
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import os
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import stat
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PLACEHOLDER = '<(TOOLCHAIN_BASE_DIR)'
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def _replace_prefix(val, before, after):
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"""Replace the given prefix with the given string."""
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if val.startswith(before):
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return val.replace(before, after, 1)
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return val
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def _replace(val, before, after):
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"""Replace occurrences of one string with another within the data."""
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if isinstance(val, basestring):
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return _replace_prefix(val, before, after)
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elif isinstance(val, (list, tuple)):
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return [_replace(elem, before, after) for elem in val]
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elif isinstance(val, dict):
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return {_replace(k, before, after):
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_replace(v, before, after) for k, v in val.iteritems()}
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raise Exception('Cannot replace variable: %s' % val)
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def _replace_in_file(filename, before, after):
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"""Replace occurrences of one string with another within the file."""
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# Make the file writeable, or the below won't work.
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os.chmod(filename, stat.S_IWRITE)
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with open(filename) as f:
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contents = json.load(f)
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new_contents = _replace(contents, before, after)
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with open(filename, 'w') as f:
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json.dump(new_contents, f)
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def abstract(win_toolchain_json, old_path):
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"""Replace absolute paths in win_toolchain.json with placeholders."""
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_replace_in_file(win_toolchain_json, old_path, PLACEHOLDER)
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def resolve(win_toolchain_json, new_path):
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"""Replace placeholders in win_toolchain.json with absolute paths."""
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_replace_in_file(win_toolchain_json, PLACEHOLDER, new_path)
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