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https://github.com/token2/chromeos_smart_card_connector.git
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68 lines
2.3 KiB
Python
68 lines
2.3 KiB
Python
 
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#!/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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