kc3-lang/SDL/src/core/os2/geniconv/sys2utf8.c

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• Hash : 110a0f7b
  Author :
  Date : 2020-10-14T23:01:01
  

  os2: update include paths. add missing libc includes to geniconv.
  

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• src/core/os2/geniconv/sys2utf8.c

• #include "geniconv.h"
  #include <stdlib.h>
  
  int StrUTF8(int fToUTF8, char *pcDst, int cbDst, char *pcSrc, int cbSrc)
  {
    size_t     rc;
    char       *pcDstStart = pcDst;
    iconv_t    cd;
    char       *pszToCP, *pszFromCP;
    int        fError = 0;
  
    if ( cbDst < 4 )
      return -1;
  
    if ( fToUTF8 )
    {
      pszToCP   = "UTF-8";
      pszFromCP = "";
    }
    else
    {
      pszToCP   = "";
      pszFromCP = "UTF-8";
    }
  
    cd = iconv_open( pszToCP, pszFromCP );
    if ( cd == (iconv_t)-1 )
      return -1;
  
    while( cbSrc > 0 )
    {
      rc = iconv( cd, &pcSrc, (size_t *)&cbSrc, &pcDst, (size_t *)&cbDst );
      if ( rc == (size_t)-1 )
      {
        if ( errno == EILSEQ )
        {
          // Try to skip invalid character.
          pcSrc++;
          cbSrc--;
          continue;
        }
  
        fError = 1;
        break;
      }
    }
  
    iconv_close( cd );
  
    // Write trailing ZERO (1 byte for UTF-8, 2 bytes for the system cp).
    if ( fToUTF8 )
    {
      if ( cbDst < 1 )
      {
        pcDst--;
        fError = 1;      // The destination buffer overflow.
      }
      *pcDst = '\0';
    }
    else
    {
      if ( cbDst < 2 )
      {
        pcDst -= ( cbDst == 0 ) ? 2 : 1;
        fError = 1;      // The destination buffer overflow.
      }
      *((short *)pcDst) = '\0';
    }
  
    return fError ? -1 : ( pcDst - pcDstStart );
  }
  
  char *StrUTF8New(int fToUTF8, char *pcStr, int cbStr)
  {
    int        cbNewStr = ( ( cbStr > 4 ? cbStr : 4 ) + 1 ) * 2;
    char       *pszNewStr = malloc( cbNewStr );
  
    if ( pszNewStr == NULL )
      return NULL;
  
    cbNewStr = StrUTF8( fToUTF8, pszNewStr, cbNewStr, pcStr, cbStr );
    if ( cbNewStr != -1 )
    {
      pcStr = realloc( pszNewStr, cbNewStr + ( fToUTF8 ? 1 : sizeof(short) ) );
      if ( pcStr != NULL )
        return pcStr;
    }
  
    free( pszNewStr );
    return NULL;
  }
  
  void StrUTF8Free(char *pszStr)
  {
    free( pszStr );
  }
  

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