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Viewing changes to bzrlib/lazy_regex.py

  • Committer: Brian de Alwis
  • Date: 2009-09-24 19:51:37 UTC
  • mto: (4715.4.1 integration)
  • mto: This revision was merged to the branch mainline in revision 4727.
  • Revision ID: bsd@acm.org-20090924195137-wubyeqv515mkigi8
Introduce new mailer to support MacOS X's Mail.app

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bzrlib/lazy_regex.py
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import re
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from bzrlib import errors
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class LazyRegex(object):
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    """A proxy around a real regex, which won't be compiled until accessed."""
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    def _real_re_compile(self, *args, **kwargs):
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        """Thunk over to the original re.compile"""
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        try:
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            return _real_re_compile(*args, **kwargs)
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        except re.error, e:
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            # raise InvalidPattern instead of re.error as this gives a
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            # cleaner message to the user.
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            raise errors.InvalidPattern('"' + args[0] + '" ' +str(e))
 
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        return _real_re_compile(*args, **kwargs)
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    def __getattr__(self, attr):
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        """Return a member from the proxied regex object.