RtlUnicodeToCustomCPN

NTSTATUS __stdcall RtlUnicodeToCustomCPN(
        PCPTABLEINFO CustomCP,
        PCH CustomCPString,
        UINT64 MaxBytesInCustomCPString,
        PULONG BytesInCustomCPString,
        WCHAR *UnicodeString,
        UINT64 BytesInUnicodeString){
  NTSTATUS v6; 
  unsigned int v7; 
  PCH v8; 
  unsigned int *v9; 
  NTSTATUS v10; 
  unsigned int v12; 
  unsigned int v13; 
  _BYTE *v14; 
  WCHAR *v15; 
  __int64 v16; 
  __int64 v17; 
  _WORD *WideCharTable; 
  int v19; 
  WCHAR *v20; 
  __int64 v21; 
  __int16 v22; 
  unsigned int v23; 
  UINT64 UnicodeStringByteCount; 
  char v25; 

  v6 = 0;
  v7 = MaxBytesInCustomCPString;
  v8 = CustomCPString;
  if( CustomCP->CodePage == 0xFDE9 )
  {
    v9 = (unsigned int *)&v25;
    if( BytesInCustomCPString )
      v9 = BytesInCustomCPString;
    if( (_DWORD)BytesInUnicodeString )
    {
      LODWORD(UnicodeStringByteCount) = BytesInUnicodeString;
      v10 = RtlUnicodeToUTF8N(CustomCPString, v7, v9, UnicodeString, UnicodeStringByteCount);
    }
    else
    {
      *v9 = 0;
      v10 = 0;
    }
    if( v10 == -1073741789 )
      return -2147483643;
    return v6;
  }
  else
  {
    v12 = (unsigned int)BytesInUnicodeString >> 1;
    if( CustomCP->DBCSCodePage )
    {
      WideCharTable = CustomCP->WideCharTable;
      v19 = (int)v8;
      if( v12 )
      {
        v20 = UnicodeString;
        do
        {
          if( !v7 )
            break;
          v21 = *v20++;
          v22 = WideCharTable[v21];
          if( HIBYTE(v22) )
          {
            v23 = v7--;
            if( v23 < 2 )
              break;
            *v8++ = HIBYTE(v22);
          }
          *v8 = v22;
          --v7;
          ++v8;
          --v12;
        }
        while( v12 );
      }
      if( BytesInCustomCPString )
        *BytesInCustomCPString = (_DWORD)v8 - v19;
    }
    else
    {
      v13 = MaxBytesInCustomCPString;
      if( v12 < (unsigned int)MaxBytesInCustomCPString )
        v13 = (unsigned int)BytesInUnicodeString >> 1;
      if( BytesInCustomCPString )
        *BytesInCustomCPString = v13;
      v14 = CustomCP->WideCharTable;
      if( v13 )
      {
        v15 = UnicodeString;
        v16 = v13;
        do
        {
          v17 = *v15++;
          *v8++ = v14[v17];
          --v16;
        }
        while( v16 );
      }
    }
    return v7 < v12 ? 0x80000005 : 0;
  }
}

Referenced by: