void CBC_ASCIIEncoder::Encode(CBC_EncoderContext& context, int32_t& e) {
int32_t n = CBC_HighLevelEncoder::determineConsecutiveDigitCount(
context.m_msg, context.m_pos);
if (n >= 2) {
FX_WCHAR code =
encodeASCIIDigits(context.m_msg.GetAt(context.m_pos),
context.m_msg.GetAt(context.m_pos + 1), e);
if (e != BCExceptionNO) {
return;
}
context.writeCodeword(code);
context.m_pos += 2;
} else {
FX_WCHAR c = context.getCurrentChar();
int32_t newMode = CBC_HighLevelEncoder::lookAheadTest(
context.m_msg, context.m_pos, getEncodingMode());
if (newMode != getEncodingMode()) {
switch (newMode) {
case BASE256_ENCODATION:
context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_BASE256);
context.signalEncoderChange(BASE256_ENCODATION);
return;
case C40_ENCODATION:
context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_C40);
context.signalEncoderChange(C40_ENCODATION);
return;
case X12_ENCODATION:
context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_ANSIX12);
context.signalEncoderChange(X12_ENCODATION);
break;
case TEXT_ENCODATION:
context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_TEXT);
context.signalEncoderChange(TEXT_ENCODATION);
break;
case EDIFACT_ENCODATION:
context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_EDIFACT);
context.signalEncoderChange(EDIFACT_ENCODATION);
break;
default:
e = BCExceptionIllegalStateIllegalMode;
return;
}
} else if (CBC_HighLevelEncoder::isExtendedASCII(c)) {
context.writeCodeword(CBC_HighLevelEncoder::UPPER_SHIFT);
context.writeCodeword((FX_WCHAR)(c - 128 + 1));
context.m_pos++;
} else {
context.writeCodeword((FX_WCHAR)(c + 1));
context.m_pos++;
}
}
}
void CBC_EdifactEncoder::Encode(CBC_EncoderContext& context, int32_t& e) {
CFX_WideString buffer;
while (context.hasMoreCharacters()) {
FX_WCHAR c = context.getCurrentChar();
encodeChar(c, buffer, e);
if (e != BCExceptionNO) {
return;
}
context.m_pos++;
int32_t count = buffer.GetLength();
if (count >= 4) {
context.writeCodewords(encodeToCodewords(buffer, 0, e));
if (e != BCExceptionNO) {
return;
}
buffer.Delete(0, 4);
int32_t newMode = CBC_HighLevelEncoder::lookAheadTest(
context.m_msg, context.m_pos, getEncodingMode());
if (newMode != getEncodingMode()) {
context.signalEncoderChange(ASCII_ENCODATION);
break;
}
}
}
buffer += (FX_WCHAR)31;
handleEOD(context, buffer, e);
}
void CBC_EdifactEncoder::handleEOD(CBC_EncoderContext& context,
CFX_WideString buffer,
int32_t& e) {
int32_t count = buffer.GetLength();
if (count == 0) {
return;
}
if (count == 1) {
context.updateSymbolInfo(e);
if (e != BCExceptionNO) {
return;
}
int32_t available =
context.m_symbolInfo->m_dataCapacity - context.getCodewordCount();
int32_t remaining = context.getRemainingCharacters();
if (remaining == 0 && available <= 2) {
return;
}
}
if (count > 4) {
e = BCExceptionIllegalStateCountMustNotExceed4;
return;
}
int32_t restChars = count - 1;
CFX_WideString encoded = encodeToCodewords(buffer, 0, e);
if (e != BCExceptionNO) {
return;
}
FX_BOOL endOfSymbolReached = !context.hasMoreCharacters();
FX_BOOL restInAscii = endOfSymbolReached && restChars <= 2;
if (restChars <= 2) {
context.updateSymbolInfo(context.getCodewordCount() + restChars, e);
if (e != BCExceptionNO) {
return;
}
int32_t available =
context.m_symbolInfo->m_dataCapacity - context.getCodewordCount();
if (available >= 3) {
restInAscii = FALSE;
context.updateSymbolInfo(context.getCodewordCount() + encoded.GetLength(),
e);
if (e != BCExceptionNO) {
return;
}
}
}
if (restInAscii) {
context.resetSymbolInfo();
context.m_pos -= restChars;
} else {
context.writeCodewords(encoded);
}
context.signalEncoderChange(ASCII_ENCODATION);
}
void CBC_X12Encoder::handleEOD(CBC_EncoderContext& context,
CFX_WideString& buffer,
int32_t& e) {
context.updateSymbolInfo(e);
if (e != BCExceptionNO) {
return;
}
int32_t available =
context.m_symbolInfo->m_dataCapacity - context.getCodewordCount();
int32_t count = buffer.GetLength();
if (count == 2) {
context.writeCodeword(CBC_HighLevelEncoder::X12_UNLATCH);
context.m_pos -= 2;
context.signalEncoderChange(ASCII_ENCODATION);
} else if (count == 1) {
context.m_pos--;
if (available > 1) {
context.writeCodeword(CBC_HighLevelEncoder::X12_UNLATCH);
}
context.signalEncoderChange(ASCII_ENCODATION);
}
}
void CBC_C40Encoder::Encode(CBC_EncoderContext& context, int32_t& e) {
CFX_WideString buffer;
while (context.hasMoreCharacters()) {
FX_WCHAR c = context.getCurrentChar();
context.m_pos++;
int32_t lastCharSize = encodeChar(c, buffer, e);
if (e != BCExceptionNO) {
return;
}
int32_t unwritten = (buffer.GetLength() / 3) * 2;
int32_t curCodewordCount = context.getCodewordCount() + unwritten;
context.updateSymbolInfo(curCodewordCount, e);
if (e != BCExceptionNO) {
return;
}
int32_t available = context.m_symbolInfo->m_dataCapacity - curCodewordCount;
if (!context.hasMoreCharacters()) {
CFX_WideString removed;
if ((buffer.GetLength() % 3) == 2) {
if (available < 2 || available > 2) {
lastCharSize =
backtrackOneCharacter(context, buffer, removed, lastCharSize, e);
if (e != BCExceptionNO) {
return;
}
}
}
while ((buffer.GetLength() % 3) == 1 &&
((lastCharSize <= 3 && available != 1) || lastCharSize > 3)) {
lastCharSize =
backtrackOneCharacter(context, buffer, removed, lastCharSize, e);
if (e != BCExceptionNO) {
return;
}
}
break;
}
int32_t count = buffer.GetLength();
if ((count % 3) == 0) {
int32_t newMode = CBC_HighLevelEncoder::lookAheadTest(
context.m_msg, context.m_pos, getEncodingMode());
if (newMode != getEncodingMode()) {
context.signalEncoderChange(newMode);
break;
}
}
}
handleEOD(context, buffer, e);
}
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));
}
}
void CBC_C40Encoder::handleEOD(CBC_EncoderContext& context,
CFX_WideString& buffer,
int32_t& e) {
int32_t unwritten = (buffer.GetLength() / 3) * 2;
int32_t rest = buffer.GetLength() % 3;
int32_t curCodewordCount = context.getCodewordCount() + unwritten;
context.updateSymbolInfo(curCodewordCount, e);
if (e != BCExceptionNO) {
return;
}
int32_t available = context.m_symbolInfo->m_dataCapacity - curCodewordCount;
if (rest == 2) {
buffer += (FX_WCHAR)'\0';
while (buffer.GetLength() >= 3) {
writeNextTriplet(context, buffer);
}
if (context.hasMoreCharacters()) {
context.writeCodeword(CBC_HighLevelEncoder::C40_UNLATCH);
}
} else if (available == 1 && rest == 1) {
while (buffer.GetLength() >= 3) {
writeNextTriplet(context, buffer);
}
if (context.hasMoreCharacters()) {
context.writeCodeword(CBC_HighLevelEncoder::C40_UNLATCH);
}
context.m_pos--;
} else if (rest == 0) {
while (buffer.GetLength() >= 3) {
writeNextTriplet(context, buffer);
}
if (available > 0 || context.hasMoreCharacters()) {
context.writeCodeword(CBC_HighLevelEncoder::C40_UNLATCH);
}
} else {
e = BCExceptionIllegalStateUnexpectedCase;
return;
}
context.signalEncoderChange(ASCII_ENCODATION);
}
void CBC_X12Encoder::Encode(CBC_EncoderContext& context, int32_t& e) {
CFX_WideString buffer;
while (context.hasMoreCharacters()) {
FX_WCHAR c = context.getCurrentChar();
context.m_pos++;
encodeChar(c, buffer, e);
if (e != BCExceptionNO) {
return;
}
int32_t count = buffer.GetLength();
if ((count % 3) == 0) {
writeNextTriplet(context, buffer);
int32_t newMode = CBC_HighLevelEncoder::lookAheadTest(
context.m_msg, context.m_pos, getEncodingMode());
if (newMode != getEncodingMode()) {
context.signalEncoderChange(newMode);
break;
}
}
}
handleEOD(context, buffer, e);
}