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  • Committer: Martin Pool
  • Date: 2010-04-28 07:03:38 UTC
  • mfrom: (5188 +trunk)
  • mto: This revision was merged to the branch mainline in revision 5189.
  • Revision ID: mbp@sourcefrog.net-20100428070338-2af8y3takgfkrkyp
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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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            real_handlers[kind](abspath, relpath)
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def copy_ownership(dst, src=None):
 
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def copy_ownership_from_path(dst, src=None):
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    """Copy usr/grp ownership from src file/dir to dst file/dir.
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    If src is None, the containing directory is used as source. If chown
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        trace.warning("Unable to copy ownership from '%s' to '%s': IOError: %s." % (src, dst, e))
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def mkdir_with_ownership(path, ownership_src=None):
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    """Create the directory 'path' with specified ownership.
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    If ownership_src is given, copies (chown) usr/grp ownership
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    from 'ownership_src' to 'path'. If ownership_src is None, use the
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    containing dir ownership.
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    """
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    os.mkdir(path)
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    copy_ownership(path, ownership_src)
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def open_with_ownership(filename, mode='r', bufsize=-1, ownership_src=None):
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    """Open the file 'filename' with the specified ownership.
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    If ownership_src is specified, copy usr/grp ownership from ownership_src
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    to filename. If ownership_src is None, copy ownership from containing
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    directory.
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    Returns the opened file object.
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    """
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    f = open(filename, mode, bufsize)
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    copy_ownership(filename, ownership_src)
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    return f
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def path_prefix_key(path):
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    """Generate a prefix-order path key for path.
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