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  • Committer: wang
  • Date: 2006-10-29 13:41:32 UTC
  • mto: (2104.4.1 wang_65714)
  • mto: This revision was merged to the branch mainline in revision 2109.
  • Revision ID: wang@ubuntu-20061029134132-3d7f4216f20c4aef
Replace python's difflib by patiencediff because the worst case 
performance is cubic for difflib and people commiting large data 
files are often hurt by this. The worst case performance of patience is 
quadratic. Fix bug 65714.

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bzrlib/store/text.py
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# Copyright (C) 2005 by Canonical Development Ltd
 
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# Copyright (C) 2005 Canonical Ltd
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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    def _try_put(self, fn, f):
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        try:
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            self._transport.put(fn, f, mode=self._file_mode)
 
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            self._transport.put_file(fn, f, mode=self._file_mode)
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        except NoSuchFile:
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            if not self._prefixed:
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                raise
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                self._transport.mkdir(os.path.dirname(fn), mode=self._dir_mode)
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            except FileExists:
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                pass
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            self._transport.put(fn, f, mode=self._file_mode)
 
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            self._transport.put_file(fn, f, mode=self._file_mode)
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    def _get(self, fn):
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        if fn.endswith('.gz'):
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        # gzip.GzipFile.read() requires a tell() function
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        # but some transports return objects that cannot seek
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        # so buffer them in a StringIO instead
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        if hasattr(f, 'tell'):
 
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        if getattr(f, 'tell', None) is not None:
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            return gzip.GzipFile(mode='rb', fileobj=f)
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        else:
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            from cStringIO import StringIO