| ######################## BEGIN LICENSE BLOCK ######################## |
| # The Original Code is mozilla.org code. |
| # |
| # The Initial Developer of the Original Code is |
| # Netscape Communications Corporation. |
| # Portions created by the Initial Developer are Copyright (C) 1998 |
| # the Initial Developer. All Rights Reserved. |
| # |
| # Contributor(s): |
| # Mark Pilgrim - port to Python |
| # |
| # This library is free software; you can redistribute it and/or |
| # modify it under the terms of the GNU Lesser General Public |
| # License as published by the Free Software Foundation; either |
| # version 2.1 of the License, or (at your option) any later version. |
| # |
| # This library is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| # Lesser General Public License for more details. |
| # |
| # You should have received a copy of the GNU Lesser General Public |
| # License along with this library; if not, write to the Free Software |
| # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
| # 02110-1301 USA |
| ######################### END LICENSE BLOCK ######################### |
| |
| from . import constants |
| from .escsm import (HZSMModel, ISO2022CNSMModel, ISO2022JPSMModel, |
| ISO2022KRSMModel) |
| from .charsetprober import CharSetProber |
| from .codingstatemachine import CodingStateMachine |
| from .compat import wrap_ord |
| |
| |
| class EscCharSetProber(CharSetProber): |
| def __init__(self): |
| CharSetProber.__init__(self) |
| self._mCodingSM = [ |
| CodingStateMachine(HZSMModel), |
| CodingStateMachine(ISO2022CNSMModel), |
| CodingStateMachine(ISO2022JPSMModel), |
| CodingStateMachine(ISO2022KRSMModel) |
| ] |
| self.reset() |
| |
| def reset(self): |
| CharSetProber.reset(self) |
| for codingSM in self._mCodingSM: |
| if not codingSM: |
| continue |
| codingSM.active = True |
| codingSM.reset() |
| self._mActiveSM = len(self._mCodingSM) |
| self._mDetectedCharset = None |
| |
| def get_charset_name(self): |
| return self._mDetectedCharset |
| |
| def get_confidence(self): |
| if self._mDetectedCharset: |
| return 0.99 |
| else: |
| return 0.00 |
| |
| def feed(self, aBuf): |
| for c in aBuf: |
| # PY3K: aBuf is a byte array, so c is an int, not a byte |
| for codingSM in self._mCodingSM: |
| if not codingSM: |
| continue |
| if not codingSM.active: |
| continue |
| codingState = codingSM.next_state(wrap_ord(c)) |
| if codingState == constants.eError: |
| codingSM.active = False |
| self._mActiveSM -= 1 |
| if self._mActiveSM <= 0: |
| self._mState = constants.eNotMe |
| return self.get_state() |
| elif codingState == constants.eItsMe: |
| self._mState = constants.eFoundIt |
| self._mDetectedCharset = codingSM.get_coding_state_machine() # nopep8 |
| return self.get_state() |
| |
| return self.get_state() |
