void
PresenceMap::decode(Codecs::DataSource & source)
{
reset();
uchar byte = 0;
if(!source.getByte(byte))
{
throw EncodingError("[ERR U03] EOF while decoding presence map.");
}
size_t pos = 0;
while((byte & stopBit) == 0)
{
appendByte(pos, byte);
if(!source.getByte(byte))
{
throw EncodingError("[ERR U03] EOF while decoding presence map.");
}
}
appendByte(pos, byte);
if(vout_)
{
(*vout_) << "pmap[" << byteCapacity_ << "]<-" << std::hex;
for(size_t iter = 0; iter < pos; ++iter)
{
(*vout_) << ' ' << std::setw(2) << static_cast<unsigned short>(bits_[iter]);
}
(*vout_) << std::dec << std::endl;
}
}
bool
FieldInstruction::decodeAscii(
Codecs::DataSource & source,
WorkingBuffer & workingBuffer)
{
workingBuffer.clear(false);
uchar byte = 0;
if(!source.getByte(byte))
{
return false;
}
while((byte & stopBit) == 0)
{
workingBuffer.push(byte);
if(!source.getByte(byte))
{
// todo: exception?
return false;
}
}
workingBuffer.push(byte & dataBits);
return true;
}
void
FieldInstruction::decodeByteVector(
Codecs::Context & decoder,
Codecs::DataSource & source,
const std::string & name,
WorkingBuffer & buffer,
size_t length)
{
buffer.clear(false, length);
for(size_t pos = 0;
pos < length;
++pos)
{
uchar byte = 0;
if(!source.getByte(byte))
{
decoder.reportFatal("[ERR U03]", "End of file: Too few bytes in ByteVector.", name);
}
buffer.push(byte);
}
}