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