ThirdParty/CharDet/chardet/eucjpprober.py

changeset 12
1d8dd9706f46
parent 0
de9c2efb9d02
child 3537
7662053c3906
--- 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)

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