Beispiel #1
0
 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;
   }
 }
Beispiel #2
0
 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);
   }
 }
Beispiel #3
0
 /**
  * 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;
   }
 }
Beispiel #4
0
 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);
 }