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#!/usr/bin/env python3
# Copyright 2023 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Read lcov files, and find lines that are probably not executable.
Example run:
zmake build --coverage -a && \
./util/find_non_exec_lines.py build/zephyr/all_builds.info && \
echo SUCCESS
"""
import re
import sys
BAD_COVERAGE = re.compile(r"^$|\*/\s*$")
def main() -> int:
"""Read lcov files, and find lines that are probably not executable."""
exit_code = 0
for input_file in sys.argv:
with open(input_file, encoding="utf-8") as lcov:
active_file = None
active_line = 0
active_name = ""
for line in lcov:
line = line.strip()
if line.startswith("SF:"):
if active_file:
active_file.close()
active_file = None
active_line = 0
active_name = line[3:]
# There are several files in zephyr that have odd coverage
# but it seems consistent.
if not "src/third_party/zephyr" in active_name:
active_file = open( # pylint: disable=R1732
active_name, encoding="utf-8"
)
if active_file and line.startswith("DA:"):
target_line = int(line[3:].split(",", 1)[0])
target = "NO SUCH LINE\n"
while target and target_line > active_line:
target = active_file.readline()
active_line += 1
if target and target_line == active_line:
target = target.strip()
if BAD_COVERAGE.match(target):
print(f"{active_name}:{active_line}={target}")
exit_code = 1
if active_file:
active_file.close()
active_file = None
return exit_code
if __name__ == "__main__":
sys.exit(main()) # next section explains the use of sys.exit
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