MessagePack/src/main/java/ch/dissem/msgpack/Reader.java

45 lines
1.3 KiB
Java

package ch.dissem.msgpack;
import ch.dissem.msgpack.types.*;
import java.io.IOException;
import java.io.InputStream;
import java.util.LinkedList;
import java.util.List;
/**
* Reads MPType object from an {@link InputStream}.
*/
public class Reader {
private List<MPType.Unpacker<?>> unpackers = new LinkedList<MPType.Unpacker<?>>();
public Reader() {
unpackers.add(new MPNil.Unpacker());
unpackers.add(new MPBoolean.Unpacker());
unpackers.add(new MPInteger.Unpacker());
unpackers.add(new MPFloat.Unpacker());
unpackers.add(new MPDouble.Unpacker());
unpackers.add(new MPString.Unpacker());
unpackers.add(new MPBinary.Unpacker());
unpackers.add(new MPMap.Unpacker(this));
unpackers.add(new MPArray.Unpacker(this));
}
/**
* Register your own extensions
*/
public void register(MPType.Unpacker<?> unpacker) {
unpackers.add(unpacker);
}
public MPType read(InputStream in) throws IOException {
int firstByte = in.read();
for (MPType.Unpacker<?> unpacker : unpackers) {
if (unpacker.is(firstByte)) {
return unpacker.unpack(firstByte, in);
}
}
throw new IOException(String.format("Unsupported input, no reader for 0x%02x", firstByte));
}
}