Rails 2.3.11

[redminele/redminele.git] / ruby / lib / ruby / gems / 1.8 / gems / actionmailer-2.3.11 / lib / action_mailer / vendor / tmail-1.2.7 / tmail / vendor / rchardet-1.3 / lib / rchardet / eucjpprober.rb

diff --git a/ruby/lib/ruby/gems/1.8/gems/actionmailer-2.3.11/lib/action_mailer/vendor/tmail-1.2.7/tmail/vendor/rchardet-1.3/lib/rchardet/eucjpprober.rb b/ruby/lib/ruby/gems/1.8/gems/actionmailer-2.3.11/lib/action_mailer/vendor/tmail-1.2.7/tmail/vendor/rchardet-1.3/lib/rchardet/eucjpprober.rb
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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