Tools/scripts/checkpyc.py

   1 #! /usr/bin/env python
   2 # Check that all ".pyc" files exist and are up-to-date
   3 # Uses module 'os'
   4
   5 import sys
   6 import os
   7 from stat import ST_MTIME
   8 import imp
   9
  10 def main():
  11     silent = 0
  12     verbose = 0
  13     if sys.argv[1:]:
  14         if sys.argv[1] == '-v':
  15             verbose = 1
  16         elif sys.argv[1] == '-s':
  17             silent = 1
  18     MAGIC = imp.get_magic()
  19     if not silent:
  20         print 'Using MAGIC word', repr(MAGIC)
  21     for dirname in sys.path:
  22         try:
  23             names = os.listdir(dirname)
  24         except os.error:
  25             print 'Cannot list directory', repr(dirname)
  26             continue
  27         if not silent:
  28             print 'Checking ', repr(dirname), '...'
  29         names.sort()
  30         for name in names:
  31             if name[-3:] == '.py':
  32                 name = os.path.join(dirname, name)
  33                 try:
  34                     st = os.stat(name)
  35                 except os.error:
  36                     print 'Cannot stat', repr(name)
  37                     continue
  38                 if verbose:
  39                     print 'Check', repr(name), '...'
  40                 name_c = name + 'c'
  41                 try:
  42                     f = open(name_c, 'r')
  43                 except IOError:
  44                     print 'Cannot open', repr(name_c)
  45                     continue
  46                 magic_str = f.read(4)
  47                 mtime_str = f.read(4)
  48                 f.close()
  49                 if magic_str <> MAGIC:
  50                     print 'Bad MAGIC word in ".pyc" file',
  51                     print repr(name_c)
  52                     continue
  53                 mtime = get_long(mtime_str)
  54                 if mtime == 0 or mtime == -1:
  55                     print 'Bad ".pyc" file', repr(name_c)
  56                 elif mtime <> st[ST_MTIME]:
  57                     print 'Out-of-date ".pyc" file',
  58                     print repr(name_c)
  59
  60 def get_long(s):
  61     if len(s) <> 4:
  62         return -1
  63     return ord(s[0]) + (ord(s[1])<<8) + (ord(s[2])<<16) + (ord(s[3])<<24)
  64
  65 if __name__ == '__main__':
  66     main()