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: 2012-06-02 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                 : }

Generated by: LCOV version 1.7