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# -*- coding: utf-8 -*- | |
from __future__ import print_function, division | |
import os | |
import sys | |
# Internal build script for generating debugging test .so size. | |
# Usage: | |
# python libsize.py file.so save.txt -- displays the size of file.so and, if save.txt exists, compares it to the | |
# size in it, then overwrites save.txt with the new size for future runs. | |
if len(sys.argv) != 3: | |
sys.exit("Invalid arguments: usage: python libsize.py file.so save.txt") | |
lib = sys.argv[1] | |
save = sys.argv[2] | |
if not os.path.exists(lib): | |
sys.exit("Error: requested file ({}) does not exist".format(lib)) | |
libsize = os.path.getsize(lib) | |
print("------", os.path.basename(lib), "file size:", libsize, end='') | |
if os.path.exists(save): | |
with open(save) as sf: | |
oldsize = int(sf.readline()) | |
if oldsize > 0: | |
change = libsize - oldsize | |
if change == 0: | |
print(" (no change)") | |
else: | |
print(" (change of {:+} bytes = {:+.2%})".format(change, change / oldsize)) | |
else: | |
print() | |
with open(save, 'w') as sf: | |
sf.write(str(libsize)) | |