def main(cmd_args):
p = ProcessTrace.from_events(run_trace(cmd_args))
p = p.collapsed()
written = set(t[1] for t in p.paths_written)
read = set(t[1] for t in p.paths_read)
present = set(t[1] for t in p.paths_checked if t[2])
missing = set(t[1] for t in p.paths_checked if not t[2])
present -= written | read
missing -= written | read
print('The command:\n {}'.format(
' '.join(shlex.quote(a) for a in p.argv)))
if written:
print('writes these paths:')
for path in sorted(written):
print(' {}'.format(path))
if written:
print('reads these paths:')
for path in sorted(read):
print(' {}'.format(path))
if present:
print('depends on the existence of these paths:')
for path in sorted(present):
print(' {}'.format(path))
if missing:
print('depends on the non-existence of these paths:')
for path in sorted(missing):
print(' {}'.format(path))
def run_trace(self, cmd_args, debug=False, cwd=None, **popen_args):
strace_helper.logger.setLevel(
logging.DEBUG if debug else logging.WARNING)
popen_args.setdefault('stdout', DEVNULL)
popen_args.setdefault('stderr', DEVNULL)
p = ProcessTrace.from_events(cwd=cwd, events=strace_helper.run_trace(
cmd_args, cwd=cwd, log_events=debug, **popen_args))
return p
