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); } }