| #! /usr/bin/env python3 |
| # 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', end=' ') |
| 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| print('Out-of-date ".pyc" file', end=' ') |
| 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() |