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https://github.com/token2/chromeos_smart_card_connector.git
synced 2026-06-22 14:42:50 -07:00
Maksim IvanovandGitHub
68567b3335
Add a script that parses llvm-cov's report table and prints the resulting line coverage percentage for C/C++ code. Run it in the Continuous Integration script and post the result as an autogenerated comment on the Pull Request.
68 lines
2.3 KiB
Python
Executable File
68 lines
2.3 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright 2022 Google Inc. All Rights Reserved.
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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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"""Parses the output of "llvm-cov report" and reformats it."""
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import sys
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def split_columns(line):
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"""Splits the tokens separated by two or more spaces.
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This is the format of the "table" that's emitted by llvm-cov report.
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"""
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return [item.strip() for item in line.split(' ') if item]
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def parse_llvm_cov_report_from_stdin():
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"""Interprets the whole stdin as a "table" from llvm-cov report.
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Returns:
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(column_names, rows)
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"""
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# Parse the table's header.
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header_line = next(sys.stdin)
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column_names = split_columns(header_line)
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if len(column_names) <= 1 or column_names[0] != 'Filename':
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raise RuntimeError(f'Unexpected header: ${header_line}')
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# Parse the table's contents.
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column_names = split_columns(header_line)
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rows = []
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for line in sys.stdin:
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cells = split_columns(line)
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if len(cells) <= 1:
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# Empty line, or line with separators ("---..."), or line with a subtitle
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# (e.g., "Files which contain no functions:").
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continue
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if len(cells) != len(column_names):
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raise RuntimeError(f'Unexpected row line: ${line}')
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rows.append(cells)
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return column_names, rows
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def get_total_line_coverage(column_names, rows):
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# Look for a triple of columns named "Lines", "Missed Lines" and "Cover".
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lines_coverage_column = column_names.index('Lines') + 2
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if column_names[lines_coverage_column] != 'Cover':
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raise RuntimeError(f'Failed to find line coverage column: ${column_names}')
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if rows[-1][0] != 'TOTAL':
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raise RuntimeError(f'Could not find totals row: ${rows[-1]}')
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return rows[-1][lines_coverage_column]
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def main():
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column_names, rows = parse_llvm_cov_report_from_stdin()
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print(get_total_line_coverage(column_names, rows))
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if __name__ == '__main__':
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sys.exit(main())
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