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Viewing changes to bzrlib/atomicfile.py

  • Committer: John Arbash Meinel
  • Date: 2006-06-18 02:21:57 UTC
  • mfrom: (1787 +trunk)
  • mto: This revision was merged to the branch mainline in revision 1794.
  • Revision ID: john@arbash-meinel.com-20060618022157-6e33aa9b67c25e4f
[merge] bzr.dev 1787

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bzrlib/atomicfile.py
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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import errno
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import os
 
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from warnings import warn
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from bzrlib.osutils import rename
 
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import errno
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class AtomicFile(object):
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    """A file that does an atomic-rename to move into place.
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        if mode != 'wb' and mode != 'wt':
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            raise ValueError("invalid AtomicFile mode %r" % mode)
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        import socket
 
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        import os, socket
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        self.tmpfilename = '%s.%d.%s.tmp' % (filename, os.getpid(),
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                                             socket.gethostname())
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        self.realfilename = filename
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    def commit(self):
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        """Close the file and move to final name."""
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        import sys, os
 
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        if self.closed:
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            raise Exception('%r is already closed' % self)
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    def abort(self):
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        """Discard temporary file without committing changes."""
 
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        import os
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        if self.closed:
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            raise Exception('%r is already closed' % self)