StrToISO.c

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#include                <string.h>
#include                "libFireBird.h"
 
void StrToISO(const byte *SourceString, byte *DestString)
{
  TRACEENTER();
 
  int                   Len;
  bool                  hasAnsiChars, hasUTFChars;
  byte                  BytesPerCharacter;
  dword                 UTF32;
 
  if(!SourceString || !DestString)
  {
    TRACEEXIT();
    return;
  }
 
  if(!*SourceString)
  {
    *DestString = '\0';
 
    TRACEEXIT();
    return;
  }
 
  GetStringEncoding(SourceString, &hasAnsiChars, &hasUTFChars);
 
  if(!hasAnsiChars && hasUTFChars)
  {
    Len = strlen(SourceString);
    while(Len > 0)
    {
      UTF32 = UTF8ToUTF32(SourceString, &BytesPerCharacter);
 
      if(UTF32 > 0xff)
      {
        //LogEntryFBLibPrintf(TRUE, "StrToISO: character 0x%4.4lx ignored", UTF32);
      }
      else
      {
        *DestString = UTF32 & 0xff;
        DestString++;
      }
 
      SourceString += BytesPerCharacter;
 
      Len -= BytesPerCharacter;
    }
    *DestString = '\0';
  }
  else
    strcpy(DestString, SourceString);
 
  TRACEEXIT();
}