private static Object readValue(InputStream is, ClassLoader loader) throws Exception {
byte type = (byte) is.read();
if (type == -1) {
return null;
}
Class vClass = null;
if (type == 2) {
int length = PDataStream.readInt(is);
Vector v = new Vector(length);
for (int i = 0; i < length; i++) {
v.insertElementAt(readValue(is, loader), i);
}
return v;
} else if (type == 0) {
return readRealObject((byte) is.read(), is, loader);
} else {
int length = PDataStream.readInt(is);
boolean primitive = PDataStream.readBoolean(is);
if (primitive) {
return readPrimitiveArray(length, is);
}
vClass =
loader == null
? Class.forName(PDataStream.readUTF(is))
: loader.loadClass(PDataStream.readUTF(is));
Object array = Array.newInstance(vClass, length);
for (int i = 0; i < length; i++) {
Array.set(array, i, readValue(is, loader));
}
return array;
}
}
private static Object readPrimitiveArray(int length, InputStream is) throws IOException {
byte type = (byte) is.read();
if (type == 1) {
int[] ints = new int[length];
for (int i = 0; i < length; i++) {
ints[i] = PDataStream.readInt(is);
}
return ints;
} else if (type == 2) {
long[] longs = new long[length];
for (int i = 0; i < length; i++) {
longs[i] = PDataStream.readLong(is);
}
return longs;
} else if (type == 3) {
byte[] bytes = new byte[length];
is.read(bytes);
return bytes;
} else if (type == 4) {
boolean[] booleans = new boolean[length];
for (int i = 0; i < length; i++) {
booleans[i] = PDataStream.readBoolean(is);
}
return booleans;
} else if (type == 5) {
char[] chars = new char[length];
for (int i = 0; i < length; i++) {
chars[i] = PDataStream.readChar(is);
}
return chars;
} else if (type == 6) {
short[] shorts = new short[length];
for (int i = 0; i < length; i++) {
shorts[i] = PDataStream.readShort(is);
}
return shorts;
} else if (type == 7) {
float[] floats = new float[length];
for (int i = 0; i < length; i++) {
floats[i] = PDataStream.readFloat(is);
}
return floats;
} else if (type == 8) {
double[] doubles = new double[length];
for (int i = 0; i < length; i++) {
doubles[i] = PDataStream.readDouble(is);
}
return doubles;
} else {
throw new IllegalArgumentException("Trying to read unsupported primitive type: " + type);
}
}
/**
* Reads the data from the InputStream and loads the data in the table.
*
* @param is stream to read dictionary's data from
* @exception Exception if an error of any kind occurs while reading
*/
public synchronized void readObject(InputStream is) throws Exception {
try {
int size = PDataStream.readInt(is);
if (table == null) {
if (size > 0) {
initTable(size);
} else initTable(MIN_CAPACITY);
}
for (int i = 0; i < size; i++) {
put(PDataStream.readUTF(is), readValue(is, loader));
}
} catch (Exception e) {
throw e;
}
}
private static Object readRealObject(byte type, InputStream is, ClassLoader loader)
throws IOException {
try {
if (type == 0) {
return PDataStream.readUTF(is);
} else if (type == 1) {
return new Integer(PDataStream.readInt(is));
} else if (type == 2) {
return new Long(PDataStream.readLong(is));
} else if (type == 3) {
return new Byte((byte) is.read());
} else if (type == 4) {
return PDataStream.readBoolean(is) ? Boolean.TRUE : Boolean.FALSE;
} else if (type == 5) {
return new Character(PDataStream.readChar(is));
} else if (type == 6) {
return new Short(PDataStream.readShort(is));
} else if (type == 7) {
return new Float(PDataStream.readFloat(is));
} else if (type == 8) {
return new Double(PDataStream.readDouble(is));
} else if (type == 11) {
String name = PDataStream.readUTF(is);
Class c = loader == null ? Class.forName(name) : loader.loadClass(name);
if (Externalizable.class.isAssignableFrom(c)) {
Externalizable obj = (Externalizable) c.newInstance();
obj.readObject(is);
return obj;
}
throw new IOException("Could not read object " + name);
} else if (type == 12) {
ObjectInputStream in =
loader == null
? new ObjectInputStream(is)
: (ObjectInputStream) new XObjectInputStream(loader, is);
return in.readObject();
}
} catch (ClassNotFoundException cnfe) {
throw new IOException("Could not find class " + cnfe.toString());
} catch (Exception exc) {
throw exc instanceof IOException
? (IOException) exc
: new IOException("Could not read object " + exc.toString());
}
throw new IllegalArgumentException("Unsupported Typed Object: " + type);
}