LCOV - code coverage report
Current view: directory - extensions/universalchardet/src/base - nsCodingStateMachine.h (source / functions) Found Hit Coverage
Test: app.info Lines: 13 0 0.0 %
Date: 2012-06-02 Functions: 5 0 0.0 %

       1                 : /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is mozilla.org code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      26                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : #ifndef nsCodingStateMachine_h__
      38                 : #define nsCodingStateMachine_h__
      39                 : 
      40                 : #include "nsPkgInt.h"
      41                 : 
      42                 : typedef enum {
      43                 :    eStart = 0,
      44                 :    eError = 1,
      45                 :    eItsMe = 2 
      46                 : } nsSMState;
      47                 : 
      48                 : #define GETCLASS(c) GETFROMPCK(((unsigned char)(c)), mModel->classTable)
      49                 : 
      50                 : //state machine model
      51                 : typedef struct 
      52                 : {
      53                 :   nsPkgInt classTable;
      54                 :   PRUint32 classFactor;
      55                 :   nsPkgInt stateTable;
      56                 :   const PRUint32* charLenTable;
      57                 :   const char* name;
      58                 : } SMModel;
      59                 : 
      60                 : class nsCodingStateMachine {
      61                 : public:
      62               0 :   nsCodingStateMachine(const SMModel* sm) : mModel(sm) { mCurrentState = eStart; }
      63               0 :   nsSMState NextState(char c){
      64                 :     //for each byte we get its class , if it is first byte, we also get byte length
      65               0 :     PRUint32 byteCls = GETCLASS(c);
      66               0 :     if (mCurrentState == eStart)
      67                 :     { 
      68               0 :       mCurrentBytePos = 0; 
      69               0 :       mCurrentCharLen = mModel->charLenTable[byteCls];
      70                 :     }
      71                 :     //from byte's class and stateTable, we get its next state
      72               0 :     mCurrentState=(nsSMState)GETFROMPCK(mCurrentState*(mModel->classFactor)+byteCls,
      73               0 :                                        mModel->stateTable);
      74               0 :     mCurrentBytePos++;
      75               0 :     return mCurrentState;
      76                 :   }
      77               0 :   PRUint32  GetCurrentCharLen(void) {return mCurrentCharLen;}
      78               0 :   void      Reset(void) {mCurrentState = eStart;}
      79               0 :   const char * GetCodingStateMachine() {return mModel->name;}
      80                 : 
      81                 : protected:
      82                 :   nsSMState mCurrentState;
      83                 :   PRUint32 mCurrentCharLen;
      84                 :   PRUint32 mCurrentBytePos;
      85                 : 
      86                 :   const SMModel *mModel;
      87                 : };
      88                 : 
      89                 : extern const SMModel UTF8SMModel;
      90                 : extern const SMModel Big5SMModel;
      91                 : extern const SMModel EUCJPSMModel;
      92                 : extern const SMModel EUCKRSMModel;
      93                 : extern const SMModel EUCTWSMModel;
      94                 : extern const SMModel GB18030SMModel;
      95                 : extern const SMModel SJISSMModel;
      96                 : 
      97                 : 
      98                 : extern const SMModel HZSMModel;
      99                 : extern const SMModel ISO2022CNSMModel;
     100                 : extern const SMModel ISO2022JPSMModel;
     101                 : extern const SMModel ISO2022KRSMModel;
     102                 : 
     103                 : #endif /* nsCodingStateMachine_h__ */
     104                 : 

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