cpython/Tools/scripts/checkpyc.py at 2.7 · python-emscripten/cpython · GitHub

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#! /usr/bin/env python

# Check that all ".pyc" files exist and are up-to-date

# Uses module 'os'

import sys

import os

from stat import ST_MTIME

import imp

def main():

silent = 0

verbose = 0

if sys.argv[1:]:

if sys.argv[1] == '-v':

verbose = 1

elif sys.argv[1] == '-s':

silent = 1

MAGIC = imp.get_magic()

if not silent:

print 'Using MAGIC word', repr(MAGIC)

for dirname in sys.path:

try:

names = os.listdir(dirname)

except os.error:

print 'Cannot list directory', repr(dirname)

continue

if not silent:

print 'Checking ', repr(dirname), '...'

names.sort()

for name in names:

if name[-3:] == '.py':

name = os.path.join(dirname, name)

try:

st = os.stat(name)

except os.error:

print 'Cannot stat', repr(name)

continue

if verbose:

print 'Check', repr(name), '...'

name_c = name + 'c'

try:

f = open(name_c, 'r')

except IOError:

print 'Cannot open', repr(name_c)

continue

magic_str = f.read(4)

mtime_str = f.read(4)

f.close()

if magic_str <> MAGIC:

print 'Bad MAGIC word in ".pyc" file',

print repr(name_c)

continue

mtime = get_long(mtime_str)

if mtime == 0 or mtime == -1:

print 'Bad ".pyc" file', repr(name_c)

elif mtime <> st[ST_MTIME]:

print 'Out-of-date ".pyc" file',

print repr(name_c)

def get_long(s):

if len(s) <> 4:

return -1

return ord(s[0]) + (ord(s[1])<<8) + (ord(s[2])<<16) + (ord(s[3])<<24)

if __name__ == '__main__':

main()

cpython/Tools/scripts/checkpyc.py at 2.7 · python-emscripten/cpython · GitHub

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