#!/usr/bin/env python

# This tool take the foo.dep.log output from a build recipe run under recipe_wrapper.sh on stdin and
# produces a profile of command execution time on the stdout.

from __future__ import print_function

import re
import sys


def PrintProfile(f):
  prev_cmd = None
  prev_timestamp = None
  for line in f:
    sr = re.match('\++ (\d+\.\d+) (.*)', line)
    if sr:
      timestamp, cmd = sr.groups()
      if prev_cmd:
        print('%.2f %s' % (float(timestamp) - float(prev_timestamp), prev_cmd))
      prev_timestamp, prev_cmd = timestamp, cmd


if __name__ == '__main__':
  PrintProfile(sys.stdin)