Script used to measure differences in size of object files

count_sizediff.py

#!/usr/bin/python
#
# Script used to measure differences in size of object files
#
# $ make -j15 chrome
# $ find out/Debug/ -name "*.a" | xargs ls -s > before.txt
#  --- CHANGE CHANGE CHANGE ---
# $ make -j15 chrome
# $ find out/Debug/ -name "*.a" | xargs ls -s > after.txt
# $ diff -u before.txt after.txt | ./count_sizediff.py

import sys

total = 0

for line in sys.stdin:
  size_str = line[1:7]

  if line[1] == '+' or line[1] == '-':
    continue
  elif line[0] == '-':
    total += int(size_str)
  elif line[0] == '+':
    total -= int(size_str)

print total