| 1 | #============================================================================ |
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| 2 | # This library is free software; you can redistribute it and/or |
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| 3 | # modify it under the terms of version 2.1 of the GNU Lesser General Public |
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| 4 | # License as published by the Free Software Foundation. |
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| 5 | # |
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| 6 | # This library is distributed in the hope that it will be useful, |
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| 7 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 8 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 9 | # Lesser General Public License for more details. |
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| 10 | # |
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| 11 | # You should have received a copy of the GNU Lesser General Public |
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| 12 | # License along with this library; if not, write to the Free Software |
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| 13 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 14 | #============================================================================ |
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| 15 | # Copyright (C) 2005 Mike Wray <mike.wray@hp.com> |
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| 16 | # Copyright (C) 2005 XenSource Ltd. |
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| 17 | #============================================================================ |
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| 18 | |
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| 19 | class Protocol: |
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| 20 | |
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| 21 | def __init__(self): |
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| 22 | self.transport = None |
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| 23 | |
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| 24 | def setTransport(self, transport): |
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| 25 | self.transport = transport |
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| 26 | |
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| 27 | def dataReceived(self, data): |
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| 28 | raise NotImplementedError() |
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| 29 | |
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| 30 | def write(self, data): |
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| 31 | if self.transport: |
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| 32 | return self.transport.write(data) |
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| 33 | else: |
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| 34 | return 0 |
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| 35 | |
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| 36 | def read(self): |
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| 37 | if self.transport: |
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| 38 | return self.transport.read() |
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| 39 | else: |
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| 40 | return None |
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