--- a/ThirdParty/CharDet/chardet/eucjpprober.py Fri Jan 01 16:11:36 2010 +0000 +++ b/ThirdParty/CharDet/chardet/eucjpprober.py Sat Jan 02 15:11:35 2010 +0000 @@ -1,85 +1,87 @@ -######################## 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 ######################### - -import constants, sys -from constants import eStart, eError, eItsMe -from mbcharsetprober import MultiByteCharSetProber -from codingstatemachine import CodingStateMachine -from chardistribution import EUCJPDistributionAnalysis -from jpcntx import EUCJPContextAnalysis -from mbcssm import EUCJPSMModel - -class EUCJPProber(MultiByteCharSetProber): - def __init__(self): - MultiByteCharSetProber.__init__(self) - self._mCodingSM = CodingStateMachine(EUCJPSMModel) - self._mDistributionAnalyzer = EUCJPDistributionAnalysis() - self._mContextAnalyzer = EUCJPContextAnalysis() - self.reset() - - def reset(self): - MultiByteCharSetProber.reset(self) - self._mContextAnalyzer.reset() - - def get_charset_name(self): - return "EUC-JP" - - def feed(self, aBuf): - aLen = len(aBuf) - for i in range(0, aLen): - codingState = self._mCodingSM.next_state(aBuf[i]) - if codingState == eError: - if constants._debug: - sys.stderr.write(self.get_charset_name() + ' prober hit error at byte ' + str(i) + '\n') - self._mState = constants.eNotMe - break - elif codingState == eItsMe: - self._mState = constants.eFoundIt - break - elif codingState == eStart: - charLen = self._mCodingSM.get_current_charlen() - if i == 0: - self._mLastChar[1] = aBuf[0] - self._mContextAnalyzer.feed(self._mLastChar, charLen) - self._mDistributionAnalyzer.feed(self._mLastChar, charLen) - else: - self._mContextAnalyzer.feed(aBuf[i-1:i+1], charLen) - self._mDistributionAnalyzer.feed(aBuf[i-1:i+1], charLen) - - self._mLastChar[0] = aBuf[aLen - 1] - - if self.get_state() == constants.eDetecting: - if self._mContextAnalyzer.got_enough_data() and \ - (self.get_confidence() > constants.SHORTCUT_THRESHOLD): - self._mState = constants.eFoundIt - - return self.get_state() - - def get_confidence(self): - contxtCf = self._mContextAnalyzer.get_confidence() - distribCf = self._mDistributionAnalyzer.get_confidence() - return max(contxtCf, distribCf) +######################## 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 +import sys +from .constants import eStart, eError, eItsMe +from .mbcharsetprober import MultiByteCharSetProber +from .codingstatemachine import CodingStateMachine +from .chardistribution import EUCJPDistributionAnalysis +from .jpcntx import EUCJPContextAnalysis +from .mbcssm import EUCJPSMModel + +class EUCJPProber(MultiByteCharSetProber): + def __init__(self): + MultiByteCharSetProber.__init__(self) + self._mCodingSM = CodingStateMachine(EUCJPSMModel) + self._mDistributionAnalyzer = EUCJPDistributionAnalysis() + self._mContextAnalyzer = EUCJPContextAnalysis() + self.reset() + + def reset(self): + MultiByteCharSetProber.reset(self) + self._mContextAnalyzer.reset() + + def get_charset_name(self): + return "EUC-JP" + + def feed(self, aBuf): + aLen = len(aBuf) + for i in range(0, aLen): + # PY3K: aBuf is a byte array, so aBuf[i] is an int, not a byte + codingState = self._mCodingSM.next_state(aBuf[i]) + if codingState == eError: + if constants._debug: + sys.stderr.write(self.get_charset_name() + ' prober hit error at byte ' + str(i) + '\n') + self._mState = constants.eNotMe + break + elif codingState == eItsMe: + self._mState = constants.eFoundIt + break + elif codingState == eStart: + charLen = self._mCodingSM.get_current_charlen() + if i == 0: + self._mLastChar[1] = aBuf[0] + self._mContextAnalyzer.feed(self._mLastChar, charLen) + self._mDistributionAnalyzer.feed(self._mLastChar, charLen) + else: + self._mContextAnalyzer.feed(aBuf[i-1:i+1], charLen) + self._mDistributionAnalyzer.feed(aBuf[i-1:i+1], charLen) + + self._mLastChar[0] = aBuf[aLen - 1] + + if self.get_state() == constants.eDetecting: + if self._mContextAnalyzer.got_enough_data() and \ + (self.get_confidence() > constants.SHORTCUT_THRESHOLD): + self._mState = constants.eFoundIt + + return self.get_state() + + def get_confidence(self): + contxtCf = self._mContextAnalyzer.get_confidence() + distribCf = self._mDistributionAnalyzer.get_confidence() + return max(contxtCf, distribCf)