/**
* Deserializes an object from the given stream.
*
* @param in the data input stream, from which the object is deserialized
* @return the serializable object
* @throws IOException when serialization data could not be read or the Serializable class could
* not get instantiated
*/
public static Object deserialize(DataInputStream in) throws IOException {
byte version = in.readByte();
// #if polish.debug.warn
if (version > VERSION) {
// #debug warn
System.out.println(
"Warning: trying to deserialize class that has been serialized with a newer version ("
+ version
+ ">"
+ VERSION
+ ").");
}
// #endif
boolean isNull = in.readBoolean();
if (isNull) {
return null;
}
byte type = in.readByte();
switch (type) {
case TYPE_EXTERNALIZABLE:
String className = in.readUTF();
// #if polish.JavaSE
if (obfuscationDeserializeMap != null) {
String fullClassName = (String) obfuscationDeserializeMap.get(className);
if (fullClassName != null) {
// System.out.println("Serializer.deserialize: translating classname from " + className
// + " to " + fullClassName );
className = fullClassName;
}
}
// #endif
// #debug debug
// #= System.out.println("deserialize " + className + "...");
Externalizable extern = null;
try {
extern = (Externalizable) Class.forName(className).newInstance();
} catch (Exception e) {
// #debug error
System.out.println("Unable to instantiate serializable \"" + className + "\"" + e);
throw new IOException(e.toString());
}
extern.read(in);
return extern;
case TYPE_EXTERNALIZABLE_ARRAY:
String cn = in.readUTF();
// #if polish.JavaSE
if (obfuscationDeserializeMap != null) {
String fullClassName = (String) obfuscationDeserializeMap.get(cn);
if (fullClassName != null) {
// System.out.println("Serializer.deserialize: translating classname from " + cn + " to
// " + fullClassName );
cn = fullClassName;
}
}
// #endif
int length = in.readInt();
Externalizable[] externalizables;
// #if !polish.JavaSE
externalizables = new Externalizable[length];
// #else
try {
// #if false
externalizables = null;
// #else
// # externalizables = (Externalizable[]) Array.newInstance(Class.forName( cn ), length);
// #endif
} catch (Exception e) {
// #debug error
System.out.println("Unable to instantiate Serializable \"" + cn + "\"" + e);
throw new IOException(e.toString());
}
// #endif
Class[] classes = new Class[Math.min(length, 7)];
Class currentClass;
byte idCounter = 0;
for (int i = 0; i < externalizables.length; i++) {
int classId = in.readByte();
if (classId == 0) { // new class name
className = in.readUTF();
// #if polish.JavaSE
if (obfuscationDeserializeMap != null) {
String fullClassName = (String) obfuscationDeserializeMap.get(className);
if (fullClassName != null) {
// System.out.println("Serializer.deserialize: translating classname from " +
// className + " to " + fullClassName );
className = fullClassName;
}
}
// #endif
try {
currentClass = Class.forName(className);
} catch (ClassNotFoundException e) {
// #debug error
System.out.println("Unable to load Serializable class \"" + className + "\"" + e);
throw new IOException(e.toString());
}
if (idCounter > classes.length) {
Class[] newClasses = new Class[classes.length + 7];
System.arraycopy(classes, 0, newClasses, 0, classes.length);
classes = newClasses;
}
classes[idCounter] = currentClass;
idCounter++;
} else {
currentClass = classes[classId - 1];
}
Externalizable externalizable;
try {
externalizable = (Externalizable) currentClass.newInstance();
externalizable.read(in);
externalizables[i] = externalizable;
} catch (Exception e) {
// #debug error
System.out.println(
"Unable to instantiate Serializable \"" + currentClass.getName() + "\"" + e);
throw new IOException(e.toString());
}
}
return externalizables;
case TYPE_OBJECT_ARRAY:
length = in.readInt();
Object[] objects = new Object[length];
for (int i = 0; i < objects.length; i++) {
objects[i] = deserialize(in);
}
return objects;
case TYPE_BYTE:
return new Byte(in.readByte());
case TYPE_SHORT:
return new Short(in.readShort());
case TYPE_INTEGER:
return new Integer(in.readInt());
case TYPE_LONG:
return new Long(in.readLong());
// #if polish.hasFloatingPoint
case TYPE_FLOAT:
return new Float(in.readFloat());
case TYPE_DOUBLE:
return new Double(in.readDouble());
// #endif
case TYPE_STRING:
return in.readUTF();
case TYPE_STRING_BUFFER:
return new StringBuffer(in.readUTF());
case TYPE_CHARACTER:
return new Character(in.readChar());
case TYPE_BOOLEAN:
return new Boolean(in.readBoolean());
case TYPE_DATE:
return new Date(in.readLong());
case TYPE_CALENDAR:
Calendar calendar = Calendar.getInstance();
calendar.setTime(new Date(in.readLong()));
return calendar;
case TYPE_RANDOM:
return new Random();
case TYPE_HASHTABLE:
int size = in.readInt();
Hashtable hashtable = new Hashtable(size);
for (int i = 0; i < size; i++) {
Object key = deserialize(in);
Object value = deserialize(in);
hashtable.put(key, value);
}
return hashtable;
case TYPE_STACK:
case TYPE_VECTOR:
size = in.readInt();
Vector vector;
if (type == TYPE_STACK) {
vector = new Stack();
} else {
vector = new Vector(size);
}
for (int i = 0; i < size; i++) {
Object value = deserialize(in);
vector.addElement(value);
}
return vector;
// #if polish.midp2
case TYPE_IMAGE:
byte subType = in.readByte();
if (subType == TYPE_IMAGE_RGB) {
int width = in.readInt();
int height = in.readInt();
int[] rgb = new int[width * height];
for (int i = 0; i < rgb.length; i++) {
rgb[i] = in.readInt();
}
return Image.createRGBImage(rgb, width, height, true);
}
// this is a bytes based format like png:
int bytesLength = in.readInt();
byte[] buffer = new byte[bytesLength];
in.readFully(buffer);
return Image.createImage(buffer, 0, bytesLength);
// #endif
// #if polish.midp
case TYPE_FONT:
int face = in.readInt();
int style = in.readInt();
size = in.readInt();
return Font.getFont(face, style, size);
case TYPE_COMMAND:
int cmdType = in.readInt();
int priority = in.readInt();
String label = in.readUTF();
return new Command(label, cmdType, priority);
// #endif
case TYPE_BYTE_ARRAY:
length = in.readInt();
byte[] byteNumbers = new byte[length];
in.readFully(byteNumbers);
return byteNumbers;
case TYPE_SHORT_ARRAY:
length = in.readInt();
short[] shortNumbers = new short[length];
for (int i = 0; i < length; i++) {
shortNumbers[i] = in.readShort();
}
return shortNumbers;
case TYPE_INT_ARRAY:
length = in.readInt();
int[] intNumbers = new int[length];
for (int i = 0; i < length; i++) {
intNumbers[i] = in.readInt();
}
return intNumbers;
case TYPE_LONG_ARRAY:
length = in.readInt();
long[] longNumbers = new long[length];
for (int i = 0; i < length; i++) {
longNumbers[i] = in.readLong();
}
return longNumbers;
// #if polish.hasFloatingPoint
case TYPE_FLOAT_ARRAY:
length = in.readInt();
float[] floatNumbers = new float[length];
for (int i = 0; i < length; i++) {
floatNumbers[i] = in.readFloat();
}
return floatNumbers;
case TYPE_DOUBLE_ARRAY:
length = in.readInt();
double[] doubleNumbers = new double[length];
for (int i = 0; i < length; i++) {
doubleNumbers[i] = in.readDouble();
}
return doubleNumbers;
// #endif
case TYPE_CHAR_ARRAY:
length = in.readInt();
char[] characters = new char[length];
for (int i = 0; i < length; i++) {
characters[i] = in.readChar();
}
return characters;
case TYPE_BOOLEAN_ARRAY:
length = in.readInt();
boolean[] bools = new boolean[length];
for (int i = 0; i < length; i++) {
bools[i] = in.readBoolean();
}
return bools;
case TYPE_STRING_ARRAY:
length = in.readInt();
String[] strings = new String[length];
for (int i = 0; i < length; i++) {
strings[i] = in.readUTF();
}
return strings;
default:
throw new IOException("Unknown type: " + type);
}
}
/**
* Reads an object directly from a byte array
*
* @param data the serialized data
* @return the original object
* @throws IOException when serialization fails
* @see #serialize(Object, boolean)
*/
public static void deserialize(byte[] data, Externalizable object) throws IOException {
ByteArrayInputStream byteIn = new ByteArrayInputStream(data);
DataInputStream in = new DataInputStream(byteIn);
object.read(in);
}