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  • Committer: Jelmer Vernooij
  • Date: 2020-03-22 01:35:14 UTC
  • mfrom: (7490.7.6 work)
  • mto: This revision was merged to the branch mainline in revision 7499.
  • Revision ID: jelmer@jelmer.uk-20200322013514-7vw1ntwho04rcuj3
merge lp:brz/3.1.

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breezy/atomicfile.py
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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from __future__ import absolute_import
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import os
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from .lazy_import import lazy_import
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lazy_import(globals(), """
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import stat
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import warnings
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from breezy import (
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    errors,
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    osutils,
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    )
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""")
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# not forksafe - but we dont fork.
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_pid = os.getpid()
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_hostname = None
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class AtomicFileAlreadyClosed(errors.PathError):
 
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    _fmt = ('"%(function)s" called on an AtomicFile after it was closed:'
 
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            ' "%(path)s"')
 
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    def __init__(self, path, function):
 
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        errors.PathError.__init__(self, path=path, extra=None)
 
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        self.function = function
 
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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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    def _close_tmpfile(self, func_name):
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        """Close the local temp file in preparation for commit or abort"""
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        if self._fd is None:
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            raise errors.AtomicFileAlreadyClosed(path=self.realfilename,
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                                                 function=func_name)
 
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            raise AtomicFileAlreadyClosed(path=self.realfilename,
 
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                                          function=func_name)
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        fd = self._fd
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        self._fd = None
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        os.close(fd)
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        """Discard the file unless already committed."""
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        if self._fd is not None:
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            self.abort()
 
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    def __enter__(self):
 
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        return self
 
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    def __exit__(self, exc_type, exc_val, exc_tb):
 
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        if exc_type:
 
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            self.abort()
 
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            return False
 
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        self.commit()