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57 lines
2.1 KiB
Python
Executable File
57 lines
2.1 KiB
Python
Executable File
######################## BEGIN LICENSE BLOCK ########################
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# The Original Code is mozilla.org code.
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#
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# The Initial Developer of the Original Code is
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# Netscape Communications Corporation.
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# Portions created by the Initial Developer are Copyright (C) 1998
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# the Initial Developer. All Rights Reserved.
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#
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# Contributor(s):
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# Mark Pilgrim - port to Python
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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# 02110-1301 USA
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######################### END LICENSE BLOCK #########################
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from constants import eStart, eError, eItsMe
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class CodingStateMachine:
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def __init__(self, sm):
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self._mModel = sm
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self._mCurrentBytePos = 0
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self._mCurrentCharLen = 0
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self.reset()
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def reset(self):
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self._mCurrentState = eStart
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def next_state(self, c):
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# for each byte we get its class
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# if it is first byte, we also get byte length
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byteCls = self._mModel['classTable'][ord(c)]
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if self._mCurrentState == eStart:
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self._mCurrentBytePos = 0
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self._mCurrentCharLen = self._mModel['charLenTable'][byteCls]
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# from byte's class and stateTable, we get its next state
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self._mCurrentState = self._mModel['stateTable'][self._mCurrentState * self._mModel['classFactor'] + byteCls]
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self._mCurrentBytePos += 1
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return self._mCurrentState
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def get_current_charlen(self):
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return self._mCurrentCharLen
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def get_coding_state_machine(self):
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return self._mModel['name']
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