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//proc/self/root/usr/lib/python2.4/lib-old/cmpcache.pyo
mò ‚=5Dc @ sG d Z d k Z d k Td k Z h Z d d „ Z d „ Z d „ Z d S( s Efficiently compare files, boolean outcome only (equal / not equal). Tricks (used in this order): - Use the statcache module to avoid statting files more than once - Files with identical type, size & mtime are assumed to be clones - Files with different type or size cannot be identical - We keep a cache of outcomes of earlier comparisons - We don't fork a process to run 'cmp' but read the files ourselves N( t *i c C s t t i | ƒ ƒ t t i | ƒ ƒ } } t | d ƒ p t | d ƒ o d Sn | o | | j o d Sn | d | d j o d Sn | d | } t i | ƒ o9 t | \ } } } | | j o | | j o | Sqç n t | | ƒ } | | | f t | <| S( sß Compare two files, use the cache if possible. May raise os.error if a stat or open of either fails. Return 1 for identical files, 0 for different. Raise exceptions if either file could not be statted, read, etc.i i i t N( t sigt statcachet statt f1t f2t s1t s2t S_ISREGt shallowt keyt cachet has_keyt cs1t cs2t outcomet do_cmp( R R R R R R R R R ( ( t& /usr/lib/python2.4/lib-old/cmpcache.pyt cmp s +$ c C s t | t ƒ | t | t f S( s> Return signature (i.e., type, size, mtime) from raw stat data.N( t S_IFMTt stt ST_MODEt ST_SIZEt ST_MTIME( R ( ( R R 2 s c C sv d d } t | d ƒ } t | d ƒ } xG | i | ƒ } | i | ƒ } | | j o d Sn | p d Sq+ q+ Wd S( s Compare two files, really.i i t rbi i N( t bufsizet openR t fp1R t fp2t readt b1t b2( R R R R R R R ( ( R R 6 s ( t __doc__t osR R R R R R ( R R R R R" R ( ( R t ? s