LCOV - app.info - intl/uconv/ucvcn/nsUnicodeToHZ.cpp

LCOV - code coverage report
| Current view: | directory - intl/uconv/ucvcn - nsUnicodeToHZ.cpp (source / functions) |  | Found | Hit | Coverage |
| Test: | app.info | Lines: | 47 | 42 | 89.4 %
| Date: | 2012-07-07 | Functions: | 3 | 3 | 100.0 %

           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 of the GNU General Public License Version 2 or later (the "GPL"),
          26                 :  * or 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                 :  /**
          38                 :  * A character set converter from Unicode to HZ.
          39                 :  *
          40                 :  *
          41                 :  * @created         08/Sept/1999
          42                 :  * @author  Yueheng Xu, Yueheng.Xu@intel.com
          43                 :  * Revision History
          44                 :  * 04/Oct/1999. Yueheng Xu: Fixed line continuation problem when line
          45                 :  *                          ended by '~';
          46                 :  *              Used table UnicodeToGBK[] to speed up the mapping.
          47                 :  */
          48                 : #include "nsUnicodeToHZ.h"
          49                 : #include "nsUCvCnDll.h"
          50                 : #include "gbku.h"
          51                 : //----------------------------------------------------------------------
          52                 : // Class nsUnicodeToGBK [implementation]
          53                 : #define HZ_STATE_GB             1
          54                 : #define HZ_STATE_ASCII  2
          55                 : #define HZ_STATE_TILD   3
          56                 : #define HZLEAD1 '~'
          57                 : #define HZLEAD2 '{'
          58                 : #define HZLEAD3 '}'
          59                 : #define UNICODE_TILD    0x007E
          60               6 : nsUnicodeToHZ::nsUnicodeToHZ() : nsEncoderSupport(6)
          61                 : {
          62               6 :   mUtil.InitToGBKTable();
          63               6 :   mHZState = HZ_STATE_ASCII;    // per HZ spec, default to HZ mode
          64               6 : }
          65               4 : NS_IMETHODIMP nsUnicodeToHZ::ConvertNoBuff(
          66                 :   const PRUnichar * aSrc,
          67                 :   PRInt32 * aSrcLength,
          68                 :   char * aDest,
          69                 :   PRInt32 * aDestLength)
          70                 : {
          71               4 :   PRInt32 i=0;
          72               4 :   PRInt32 iSrcLength = *aSrcLength;
          73               4 :   PRInt32 iDestLength = 0;
          74                 :
          75              40 :   for (i=0;i< iSrcLength;i++)
          76                 :   {
          77              36 :     if(! IS_ASCII(*aSrc))
          78                 :     {
          79                 :       // hi byte has something, it is not ASCII, process as a GB
          80               2 :       if ( mHZState != HZ_STATE_GB )
          81                 :       {
          82                 :         // we are adding a '~{' ESC sequence to star a HZ string
          83               2 :         mHZState = HZ_STATE_GB;
          84               2 :         aDest[0] = '~';
          85               2 :         aDest[1] = '{';
          86               2 :         aDest += 2;     // increment 2 bytes
          87               2 :         iDestLength +=2;
          88                 :       }
          89               2 :       if(mUtil.UnicodeToGBKChar(*aSrc, true, &aDest[0], &aDest[1])) {
          90               2 :         aDest += 2;     // increment 2 bytes
          91               2 :         iDestLength +=2;
          92                 :       } else {
          93                 :         // some thing that we cannot convert
          94                 :         // xxx fix me ftang
          95                 :         // error handling here
          96                 :       }
          97                 :     } else {
          98                 :       // this is an ASCII
          99                 :
         100                 :       // if we are in HZ mode, end it by adding a '~}' ESC sequence
         101              34 :       if ( mHZState == HZ_STATE_GB )
         102                 :       {
         103               1 :         mHZState = HZ_STATE_ASCII;
         104               1 :         aDest[0] = '~';
         105               1 :         aDest[1] = '}';
         106               1 :         aDest += 2; // increment 2 bytes
         107               1 :         iDestLength +=2;
         108                 :       }
         109                 :
         110                 :       // if this is a regular char '~' , convert it to two '~'
         111              34 :       if ( *aSrc == UNICODE_TILD )
         112                 :       {
         113               0 :         aDest[0] = '~';
         114               0 :         aDest[1] = '~';
         115               0 :         aDest += 2; // increment 2 bytes
         116               0 :         iDestLength +=2;
         117                 :       } else {
         118                 :         // other regular ASCII chars convert by normal ways
         119                 :
         120                 :         // Is this works for both little endian and big endian machines ?
         121              34 :         *aDest = (char) ( (PRUnichar)(*aSrc) );
         122              34 :         aDest++; // increment 1 byte
         123              34 :         iDestLength +=1;
         124                 :       }
         125                 :     }
         126              36 :     aSrc++;      // increment 2 bytes
         127              36 :     if ( iDestLength >= (*aDestLength) )
         128                 :     {
         129               0 :       break;
         130                 :     }
         131                 :   }
         132               4 :   *aDestLength = iDestLength;
         133               4 :   *aSrcLength = i;
         134               4 :   return NS_OK;
         135                 : }
         136                 :
         137           65154 : NS_IMETHODIMP nsUnicodeToHZ::FinishNoBuff(char * aDest, PRInt32 * aDestLength)
         138                 : {
         139           65154 :   if ( mHZState == HZ_STATE_GB )
         140                 :   {
         141                 :     // if we are in HZ mode, end it by adding a '~}' ESC sequence
         142               1 :     mHZState = HZ_STATE_ASCII;
         143               1 :     aDest[0] = '~';
         144               1 :     aDest[1] = '}';
         145               1 :     *aDestLength = 2;
         146                 :   } else {
         147           65153 :     *aDestLength = 0;
         148                 :   }
         149           65154 :   return NS_OK;
         150                 : }

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