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#!/usr/bin/env python3
import argparse
import re
from pathlib import Path
MARK_LIST = ['tracing_mark_write']
def get_arg():
parser = argparse.ArgumentParser(description='Filter a log file to a trace file.')
parser.add_argument('log_file', metavar='log_file', type=str,
help='The input log file to process.')
parser.add_argument('trace_file', metavar='trace_file', type=str, nargs='?',
help='The output trace file. If not provided, defaults to \'<log_file>.systrace\'.')
args = parser.parse_args()
return args
if __name__ == '__main__':
args = get_arg()
if not args.trace_file:
log_file = Path(args.log_file)
args.trace_file = log_file.with_suffix('.systrace').as_posix()
print('log_file :', args.log_file)
print('trace_file:', args.trace_file)
with open(args.log_file, 'r') as f:
content = f.read()
# compile regex pattern
pattern = re.compile(r'(^.+-[0-9]+\s\[[0-9]]\s[0-9]+\.[0-9]+:\s('
+ "|".join(MARK_LIST)
+ r'):\s[B|E]\|[0-9]+\|.+$)', re.M)
matches = pattern.findall(content)
# write to args.trace_file
with open(args.trace_file, 'w') as f:
f.write('# tracer: nop\n#\n')
for match in matches:
f.write(match[0] + '\n')
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