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######################## 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):
# Jeff Hodges - port to Ruby
# 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 #########################
module CharDet
class EUCJPProber < MultiByteCharSetProber
def initialize
super()
@_mCodingSM = CodingStateMachine.new(EUCJPSMModel)
@_mDistributionAnalyzer = EUCJPDistributionAnalysis.new()
@_mContextAnalyzer = EUCJPContextAnalysis.new()
reset
end
def reset
super()
@_mContextAnalyzer.reset()
end
def get_charset_name
return "EUC-JP"
end
def feed(aBuf)
aLen = aBuf.length
for i in (0...aLen)
codingState = @_mCodingSM.next_state(aBuf[i..i])
if codingState == EError
$stderr << "#{get_charset_name} prober hit error at byte #{i}\n" if $debug
@_mState = ENotMe
break
elsif codingState == EItsMe
@_mState = EFoundIt
break
elsif codingState == EStart
charLen = @_mCodingSM.get_current_charlen()
if i == 0
@_mLastChar[1] = aBuf[0..0]
@_mContextAnalyzer.feed(@_mLastChar, charLen)
@_mDistributionAnalyzer.feed(@_mLastChar, charLen)
else
@_mContextAnalyzer.feed(aBuf[i-1...i+1], charLen)
@_mDistributionAnalyzer.feed(aBuf[i-1...i+1], charLen)
end
end
end
@_mLastChar[0] = aBuf[aLen-1..aLen-1]
if get_state() == EDetecting
if @_mContextAnalyzer.got_enough_data() and (get_confidence() > SHORTCUT_THRESHOLD)
@_mState = EFoundIt
end
end
return get_state()
end
def get_confidence
l = [@_mContextAnalyzer.get_confidence,@_mDistributionAnalyzer.get_confidence]
return l.max
end
end
end
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