LCOV - code coverage report
Current view: directory - intl/uconv/util - nsUnicodeEncodeHelper.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 53 45 84.9 %
Date: 2012-06-02 Functions: 2 2 100.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; 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 Communicator client 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                 : #include "pratom.h"
      39                 : #include "unicpriv.h"
      40                 : #include "nsIUnicodeEncoder.h"
      41                 : #include "nsUnicodeEncodeHelper.h"
      42                 : 
      43                 : //----------------------------------------------------------------------
      44                 : // Class nsUnicodeEncodeHelper [implementation]
      45          172272 : nsresult nsUnicodeEncodeHelper::ConvertByTable(
      46                 :                                      const PRUnichar * aSrc, 
      47                 :                                      PRInt32 * aSrcLength, 
      48                 :                                      char * aDest, 
      49                 :                                      PRInt32 * aDestLength, 
      50                 :                                      uScanClassID aScanClass,
      51                 :                                      uShiftOutTable * aShiftOutTable,
      52                 :                                      uMappingTable  * aMappingTable)
      53                 : {
      54          172272 :   const PRUnichar * src = aSrc;
      55          172272 :   const PRUnichar * srcEnd = aSrc + *aSrcLength;
      56          172272 :   char * dest = aDest;
      57          172272 :   PRInt32 destLen = *aDestLength;
      58                 : 
      59                 :   PRUnichar med;
      60                 :   PRInt32 bcw; // byte count for write;
      61          172272 :   nsresult res = NS_OK;
      62                 : 
      63          550275 :   while (src < srcEnd) {
      64          217890 :     if (!uMapCode((uTable*) aMappingTable, static_cast<PRUnichar>(*(src++)), reinterpret_cast<PRUint16*>(&med))) {
      65           12167 :       if (aScanClass == u1ByteCharset && *(src - 1) < 0x20) {
      66                 :         // some tables are missing the 0x00 - 0x20 part
      67               8 :         med = *(src - 1);
      68                 :       } else {
      69           12159 :         res = NS_ERROR_UENC_NOMAPPING;
      70           12159 :         break;
      71                 :       }
      72                 :     }
      73                 : 
      74                 :     bool charFound;
      75          205731 :     if (aScanClass == uMultibytesCharset) {
      76              11 :       NS_ASSERTION(aShiftOutTable, "shift table missing");
      77                 :       charFound = uGenerateShift(aShiftOutTable, 0, med,
      78                 :                                  (PRUint8 *)dest, destLen, 
      79              11 :                                  (PRUint32 *)&bcw);
      80                 :     } else {
      81                 :       charFound = uGenerate(aScanClass, 0, med,
      82                 :                             (PRUint8 *)dest, destLen, 
      83          205720 :                             (PRUint32 *)&bcw);
      84                 :     }
      85          205731 :     if (!charFound) {
      86               0 :       src--;
      87               0 :       res = NS_OK_UENC_MOREOUTPUT;
      88               0 :       break;
      89                 :     }
      90                 : 
      91          205731 :     dest += bcw;
      92          205731 :     destLen -= bcw;
      93                 :   }
      94                 : 
      95          172272 :   *aSrcLength = src - aSrc;
      96          172272 :   *aDestLength  = dest - aDest;
      97          172272 :   return res;
      98                 : }
      99                 : 
     100               7 : nsresult nsUnicodeEncodeHelper::ConvertByMultiTable(
     101                 :                                      const PRUnichar * aSrc, 
     102                 :                                      PRInt32 * aSrcLength, 
     103                 :                                      char * aDest, 
     104                 :                                      PRInt32 * aDestLength, 
     105                 :                                      PRInt32 aTableCount, 
     106                 :                                      uScanClassID * aScanClassArray,
     107                 :                                      uShiftOutTable ** aShiftOutTable, 
     108                 :                                      uMappingTable  ** aMappingTable)
     109                 : {
     110               7 :   const PRUnichar * src = aSrc;
     111               7 :   const PRUnichar * srcEnd = aSrc + *aSrcLength;
     112               7 :   char * dest = aDest;
     113               7 :   PRInt32 destLen = *aDestLength;
     114                 : 
     115                 :   PRUnichar med;
     116                 :   PRInt32 bcw; // byte count for write;
     117               7 :   nsresult res = NS_OK;
     118                 :   PRInt32 i;
     119                 : 
     120              91 :   while (src < srcEnd) {
     121              99 :     for (i=0; i<aTableCount; i++) 
     122              99 :       if (uMapCode((uTable*) aMappingTable[i], static_cast<PRUint16>(*src), reinterpret_cast<PRUint16*>(&med))) break;
     123                 : 
     124              77 :     src++;
     125              77 :     if (i == aTableCount) {
     126               0 :       res = NS_ERROR_UENC_NOMAPPING;
     127               0 :       break;
     128                 :     }
     129                 : 
     130                 :     bool charFound;
     131              77 :     if (aScanClassArray[i] == uMultibytesCharset) {
     132              11 :       NS_ASSERTION(aShiftOutTable[i], "shift table missing");
     133              11 :       charFound = uGenerateShift(aShiftOutTable[i], 0, med,
     134                 :                                  (PRUint8 *)dest, destLen,
     135              22 :                                  (PRUint32 *)&bcw);
     136                 :     }
     137                 :     else
     138              66 :       charFound = uGenerate(aScanClassArray[i], 0, med,
     139                 :                             (PRUint8 *)dest, destLen, 
     140             132 :                             (PRUint32 *)&bcw);
     141              77 :     if (!charFound) { 
     142               0 :       src--;
     143               0 :       res = NS_OK_UENC_MOREOUTPUT;
     144               0 :       break;
     145                 :     }
     146                 : 
     147              77 :     dest += bcw;
     148              77 :     destLen -= bcw;
     149                 :   }
     150                 : 
     151               7 :   *aSrcLength = src - aSrc;
     152               7 :   *aDestLength  = dest - aDest;
     153               7 :   return res;
     154                 : }

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