CFX_WideString CBC_EAN8::Preprocess(const CFX_WideStringC& contents) {
CFX_WideString encodeContents =
static_cast<CBC_OnedEAN8Writer*>(m_pBCWriter.get())
->FilterContents(contents);
int32_t length = encodeContents.GetLength();
if (length <= 7) {
for (int32_t i = 0; i < 7 - length; i++)
encodeContents = FX_WCHAR('0') + encodeContents;
CFX_ByteString byteString = encodeContents.UTF8Encode();
int32_t checksum = static_cast<CBC_OnedEAN8Writer*>(m_pBCWriter.get())
->CalcChecksum(byteString);
encodeContents += FX_WCHAR(checksum - 0 + '0');
}
if (length > 8)
encodeContents = encodeContents.Mid(0, 8);
return encodeContents;
}
void CBC_Base256Encoder::Encode(CBC_EncoderContext& context, int32_t& e) {
CFX_WideString buffer;
buffer += (FX_WCHAR)'\0';
while (context.hasMoreCharacters()) {
FX_WCHAR c = context.getCurrentChar();
buffer += c;
context.m_pos++;
int32_t newMode = CBC_HighLevelEncoder::lookAheadTest(
context.m_msg, context.m_pos, getEncodingMode());
if (newMode != getEncodingMode()) {
context.signalEncoderChange(newMode);
break;
}
}
int32_t dataCount = buffer.GetLength() - 1;
FX_CHAR buf[128];
FXSYS_itoa(dataCount, buf, 10);
buffer.SetAt(0, FX_WCHAR(*buf) - '0');
int32_t lengthFieldSize = 1;
int32_t currentSize =
context.getCodewordCount() + dataCount + lengthFieldSize;
context.updateSymbolInfo(currentSize, e);
if (e != BCExceptionNO) {
return;
}
FX_BOOL mustPad = (context.m_symbolInfo->m_dataCapacity - currentSize) > 0;
if (context.hasMoreCharacters() || mustPad) {
if (dataCount <= 249) {
buffer.SetAt(0, (FX_WCHAR)dataCount);
} else if (dataCount > 249 && dataCount <= 1555) {
buffer.SetAt(0, (FX_WCHAR)((dataCount / 250) + 249));
buffer.Insert(1, (FX_WCHAR)(dataCount % 250));
} else {
e = BCExceptionIllegalStateMessageLengthInvalid;
return;
}
}
for (int32_t i = 0, c = buffer.GetLength(); i < c; i++) {
context.writeCodeword(
randomize255State(buffer.GetAt(i), context.getCodewordCount() + 1));
}
}
