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 * New ``versionedfile.KeyMapper`` interface to abstract out the access to
   underyling .knit/.kndx etc files in repositories with partitioned
   storage. (Robert Collins)

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bzrlib/store/text.py
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do any sort of delta compression.
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"""
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import gzip
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import os
 
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from cStringIO import StringIO
 
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from bzrlib import osutils
 
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from bzrlib.errors import BzrError, NoSuchFile, FileExists
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import bzrlib.store
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from bzrlib.trace import mutter
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from bzrlib.errors import BzrError, NoSuchFile, FileExists
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import gzip
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from cStringIO import StringIO
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class TextStore(bzrlib.store.TransportStore):
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            if not self._prefixed:
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                raise
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            try:
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                self._transport.mkdir(self.hash_prefix(fileid)[:-1], mode=self._dir_mode)
 
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                self._transport.mkdir(osutils.dirname(path), mode=self._dir_mode)
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            except FileExists:
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                pass
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            result = other._transport.copy_to([path], self._transport,