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+#!/usr/bin/env python
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+#
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+# Copyright (C) 2021 The Android Open Source Project
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+#
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+# Licensed under the Apache License, Version 2.0 (the "License");
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+# you may not use this file except in compliance with the License.
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+# You may obtain a copy of the License at
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+#
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+# http://www.apache.org/licenses/LICENSE-2.0
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+#
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+# Unless required by applicable law or agreed to in writing, software
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+# distributed under the License is distributed on an "AS IS" BASIS,
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+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+# See the License for the specific language governing permissions and
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+# limitations under the License.
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+"""A tool to report the current clang version used during build"""
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+
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+import os
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+import re
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+import sys
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+
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+
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+ANDROID_BUILD_TOP = os.environ.get("ANDROID_BUILD_TOP", ".")
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+
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+def get_clang_prebuilts_version(global_go):
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+ # TODO(b/187231324): Get clang version from the json file once it is no longer
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+ # hard-coded in global.go
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+ if global_go is None:
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+ global_go = ANDROID_BUILD_TOP + '/build/soong/cc/config/global.go'
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+ with open(global_go) as infile:
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+ contents = infile.read()
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+
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+ regex_rev = r'\tClangDefaultVersion\s+= "clang-(?P<rev>r\d+[a-z]?\d?)"'
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+ match_rev = re.search(regex_rev, contents)
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+ if match_rev is None:
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+ raise RuntimeError('Parsing clang info failed')
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+ return match_rev.group('rev')
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+
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+
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+def main():
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+ global_go = sys.argv[1] if len(sys.argv) > 1 else None
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+ print(get_clang_prebuilts_version(global_go));
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+
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+
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+if __name__ == '__main__':
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+ main()
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