| 1 | n/a | #! /usr/bin/env python3 |
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| 2 | n/a | # Check that all ".pyc" files exist and are up-to-date |
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| 3 | n/a | # Uses module 'os' |
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| 4 | n/a | |
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| 5 | n/a | import sys |
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| 6 | n/a | import os |
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| 7 | n/a | from stat import ST_MTIME |
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| 8 | n/a | import importlib.util |
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| 9 | n/a | |
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| 10 | n/a | # PEP 3147 compatibility (PYC Repository Directories) |
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| 11 | n/a | cache_from_source = (importlib.util.cache_from_source if sys.implementation.cache_tag |
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| 12 | n/a | else lambda path: path + 'c') |
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| 13 | n/a | |
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| 14 | n/a | |
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| 15 | n/a | def main(): |
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| 16 | n/a | if len(sys.argv) > 1: |
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| 17 | n/a | verbose = (sys.argv[1] == '-v') |
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| 18 | n/a | silent = (sys.argv[1] == '-s') |
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| 19 | n/a | else: |
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| 20 | n/a | verbose = silent = False |
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| 21 | n/a | MAGIC = importlib.util.MAGIC_NUMBER |
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| 22 | n/a | if not silent: |
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| 23 | n/a | print('Using MAGIC word', repr(MAGIC)) |
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| 24 | n/a | for dirname in sys.path: |
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| 25 | n/a | try: |
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| 26 | n/a | names = os.listdir(dirname) |
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| 27 | n/a | except OSError: |
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| 28 | n/a | print('Cannot list directory', repr(dirname)) |
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| 29 | n/a | continue |
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| 30 | n/a | if not silent: |
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| 31 | n/a | print('Checking ', repr(dirname), '...') |
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| 32 | n/a | for name in sorted(names): |
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| 33 | n/a | if name.endswith('.py'): |
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| 34 | n/a | name = os.path.join(dirname, name) |
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| 35 | n/a | try: |
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| 36 | n/a | st = os.stat(name) |
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| 37 | n/a | except OSError: |
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| 38 | n/a | print('Cannot stat', repr(name)) |
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| 39 | n/a | continue |
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| 40 | n/a | if verbose: |
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| 41 | n/a | print('Check', repr(name), '...') |
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| 42 | n/a | name_c = cache_from_source(name) |
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| 43 | n/a | try: |
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| 44 | n/a | with open(name_c, 'rb') as f: |
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| 45 | n/a | magic_str = f.read(4) |
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| 46 | n/a | mtime_str = f.read(4) |
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| 47 | n/a | except IOError: |
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| 48 | n/a | print('Cannot open', repr(name_c)) |
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| 49 | n/a | continue |
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| 50 | n/a | if magic_str != MAGIC: |
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| 51 | n/a | print('Bad MAGIC word in ".pyc" file', end=' ') |
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| 52 | n/a | print(repr(name_c)) |
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| 53 | n/a | continue |
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| 54 | n/a | mtime = get_long(mtime_str) |
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| 55 | n/a | if mtime in {0, -1}: |
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| 56 | n/a | print('Bad ".pyc" file', repr(name_c)) |
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| 57 | n/a | elif mtime != st[ST_MTIME]: |
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| 58 | n/a | print('Out-of-date ".pyc" file', end=' ') |
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| 59 | n/a | print(repr(name_c)) |
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| 60 | n/a | |
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| 61 | n/a | |
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| 62 | n/a | def get_long(s): |
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| 63 | n/a | if len(s) != 4: |
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| 64 | n/a | return -1 |
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| 65 | n/a | return s[0] + (s[1] << 8) + (s[2] << 16) + (s[3] << 24) |
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| 66 | n/a | |
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| 67 | n/a | |
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| 68 | n/a | if __name__ == '__main__': |
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| 69 | n/a | main() |
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