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  • Committer: Canonical.com Patch Queue Manager
  • Date: 2010-04-23 13:47:32 UTC
  • mfrom: (5179.1.1 integration2)
  • Revision ID: pqm@pqm.ubuntu.com-20100423134732-e01c947fwuvjwtl2
(vila, for gz) Use signal only where available

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bzrlib/osutils.py
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from shutil import (
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    rmtree,
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    )
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import signal
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import socket
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import subprocess
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import tempfile
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        platform or Python version.
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    """
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    try:
 
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        import signal
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        siginterrupt = signal.siginterrupt
 
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    except ImportError:
 
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        # This python implementation doesn't provide signal support, hence no
 
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        # handler exists
 
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        return None
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    except AttributeError:
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        # siginterrupt doesn't exist on this platform, or for this version
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        # of Python.
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_registered_sigwinch = False
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def watch_sigwinch():
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    """Register for SIGWINCH, once and only once."""
 
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    """Register for SIGWINCH, once and only once.
 
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    Do nothing if the signal module is not available.
 
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    """
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    global _registered_sigwinch
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    if not _registered_sigwinch:
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        if sys.platform == 'win32':
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            # Martin (gz) mentioned WINDOW_BUFFER_SIZE_RECORD from
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            # ReadConsoleInput but I've no idea how to plug that in
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            # the current design -- vila 20091216
 
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        try:
 
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            import signal
 
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            if getattr(signal, "SIGWINCH", None) is not None:
 
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                set_signal_handler(signal.SIGWINCH, _terminal_size_changed)
 
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        except ImportError:
 
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            # python doesn't provide signal support, nothing we can do about it
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            pass
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        else:
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            set_signal_handler(signal.SIGWINCH, _terminal_size_changed)
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        _registered_sigwinch = True
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