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  • Committer: Robert Collins
  • Date: 2005-10-03 01:15:02 UTC
  • mfrom: (1092.2.28)
  • Revision ID: robertc@robertcollins.net-20051003011502-f579a509a136b774
merge from baz2bzr

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bzrlib/hashcache.py
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CACHE_HEADER = "### bzr hashcache v5\n"
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import os, stat, time
 
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import sha
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from bzrlib.osutils import sha_file
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from bzrlib.trace import mutter, warning
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from bzrlib.atomicfile import AtomicFile
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FP_MODE_COLUMN = 5
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def _fingerprint(abspath):
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    try:
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    # we discard any high precision because it's not reliable; perhaps we
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    # could do better on some systems?
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    return (fs.st_size, long(fs.st_mtime),
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            long(fs.st_ctime), fs.st_ino, fs.st_dev)
 
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            long(fs.st_ctime), fs.st_ino, fs.st_dev, fs.st_mode)
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class HashCache(object):
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            return cache_sha1
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        self.miss_count += 1
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        digest = sha_file(file(abspath, 'rb', buffering=65000))
 
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        mode = file_fp[FP_MODE_COLUMN]
 
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        if stat.S_ISREG(mode):
 
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            digest = sha_file(file(abspath, 'rb', buffering=65000))
 
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        elif stat.S_ISLNK(mode):
 
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            link_target = os.readlink(abspath)
 
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            digest = sha.new(os.readlink(abspath)).hexdigest()
 
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        else:
 
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            raise BzrError("file %r: unknown file stat mode: %o"%(abspath,mode))
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        now = int(time.time())
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        if file_fp[1] >= now or file_fp[2] >= now:
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            self.update_count += 1
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            self.needs_write = True
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            self._cache[path] = (digest, file_fp)
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        return digest
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    def write(self):
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        """Write contents of cache to file."""
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        outf = AtomicFile(self.cache_file_name(), 'wb')
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            pos += 3
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            fields = l[pos:].split(' ')
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            if len(fields) != 6:
 
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            if len(fields) != 7:
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                warning("bad line in hashcache: %r" % l)
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                continue
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