Ejemplo n.º 1
0
CFX_WideString CBC_EAN13::Preprocess(const CFX_WideStringC& contents) {
  CFX_WideString encodeContents =
      static_cast<CBC_OnedEAN13Writer*>(m_pBCWriter.get())
          ->FilterContents(contents);
  int32_t length = encodeContents.GetLength();
  if (length <= 12) {
    for (int32_t i = 0; i < 12 - length; i++)
      encodeContents = FX_WCHAR('0') + encodeContents;

    CFX_ByteString byteString = encodeContents.UTF8Encode();
    int32_t checksum = static_cast<CBC_OnedEAN13Writer*>(m_pBCWriter.get())
                           ->CalcChecksum(byteString);
    byteString += checksum - 0 + '0';
    encodeContents = byteString.UTF8Decode();
  }
  if (length > 13)
    encodeContents = encodeContents.Mid(0, 13);

  return encodeContents;
}