java: fix streaming de/serializer

java-plan1/test.java

@@ -6,21 +6,88 @@ class OpenByteArrayOutputStream extends ByteArrayOutputStream {
 	byte[] getBuffer() { return buf; }
 }
 
+
 public class test {
+
 	public static void main(String[] args) throws IOException
+	{
+		testSimple();
+		testStreaming();
+	}
+
+
+	public static void testSimple() throws IOException
 	{
 		OpenByteArrayOutputStream out = new OpenByteArrayOutputStream();
 
 		Packer pk = new Packer(out);
 		pk.packArray(3)
-			.packInt(0)
-			.packByte((byte)1)
-			.packDouble(0.1);
+			.packInt(1)
+			.packByte((byte)2)
+			.packDouble(0.3);
 
 		Unpacker pac = new Unpacker();
 		int nlen = pac.execute(out.getBuffer(), 0, out.getCount());
+
 		if(pac.isFinished()) {
-			System.out.println(pac.getData());
+			System.out.println("testSimple: "+pac.getData());
+		}
+	}
+
+
+	public static void testStreaming() throws IOException
+	{
+		OpenByteArrayOutputStream out = new OpenByteArrayOutputStream();
+
+		////
+		// sender
+		//
+		// initialize the streaming serializer
+		Packer pk = new Packer(out);
+
+		// serialize 2 objects
+		pk.packArray(3)
+			.packInt(0)
+			.packByte((byte)1)
+			.packDouble(0.2);
+		pk.packArray(3)
+			.packInt(3)
+			.packByte((byte)4)
+			.packDouble(0.5);
+
+		// send it through the network
+		InputStream sock = new ByteArrayInputStream(out.getBuffer(), 0, out.getCount());
+
+
+		////
+		// receiver
+		//
+		// initialize the streaming deserializer
+		Unpacker pac = new Unpacker();
+		int parsed = 0;
+
+		byte[] buf = new byte[1024];
+		int buflen = 0;
+
+		while(true) {
+			// receive data from the network
+			int c = sock.read();
+			if(c < 0) { return; }
+
+			buf[buflen++] = (byte)c;
+
+			// deserialize
+			parsed = pac.execute(buf, parsed, buflen);
+			if(pac.isFinished()) {
+				// get an object
+				Object msg = pac.getData();
+				System.out.println("testStreaming: "+msg);
+
+				// reset the streaming deserializer
+				pac.reset();
+				buflen = 0;
+				parsed = 0;
+			}
 		}
 	}
 }