/**
* Skip <i>len</i> number of bytes in input stream<i>in</i>
*
* @param in input stream
* @param len number of bytes to skip
* @throws IOException when skipped less number of bytes
*/
public static void skipFully(DataInput in, int len) throws IOException {
int total = 0;
int cur = 0;
while ((total < len) && ((cur = in.skipBytes(len - total)) > 0)) {
total += cur;
}
if (total < len) {
throw new IOException(
"Not able to skip " + len + " bytes, possibly " + "due to end of input.");
}
}
public void readObject(DataInput in) throws IOException {
boolean sgIO = in.readBoolean();
int nodeID = in.readInt();
int nodeClassID = in.readShort();
nodeClassName = null;
if (nodeClassID == -1) nodeClassName = in.readUTF();
readConstructorParams(in);
if (nodeClassID != -1) {
node = createNode();
nodeClassName = node.getClass().getName();
} else node = createNode(nodeClassName);
if (sgIO) {
if (control.getCurrentFileVersion() == 1)
((com.sun.j3d.utils.scenegraph.io.SceneGraphIO) node).readSceneGraphObject(in);
else {
int size = in.readInt();
if (node instanceof com.sun.j3d.utils.scenegraph.io.SceneGraphIO) {
byte[] bytes = new byte[size];
in.readFully(bytes);
ByteArrayInputStream byteStream = new ByteArrayInputStream(bytes);
DataInputStream tmpIn = new DataInputStream(byteStream);
((com.sun.j3d.utils.scenegraph.io.SceneGraphIO) node).readSceneGraphObject(tmpIn);
tmpIn.close();
} else {
in.skipBytes(size);
}
}
}
symbol = control.getSymbolTable().createSymbol(this, node, nodeID);
readUserData(in);
if (control.getCurrentFileVersion() > 2) {
node.setName(readString(in));
}
readCapabilities(in);
}
public static Data decodeData(final DataInput buffer, PeerAddress originator)
throws InvalidKeyException, NoSuchAlgorithmException, InvalidKeySpecException {
// mini header for data, 8 bytes ttl and data length
if (buffer.readableBytes() < 4 + 4) return null;
int ttl = buffer.readInt();
boolean protectedEntry = (ttl & 0x80000000) != 0;
ttl &= 0x7FFFFFFF;
int dateLength = buffer.readInt();
//
if (buffer.readableBytes() < dateLength) return null;
final Data data =
createData(
buffer.array(),
buffer.arrayOffset() + buffer.readerIndex(),
dateLength,
ttl,
protectedEntry,
originator);
buffer.skipBytes(dateLength);
return data;
}
public static void skipCompressedByteArray(DataInput in) throws IOException {
int length = in.readInt();
if (length != -1) in.skipBytes(length);
}
/**
* Factory method for creating <tt>AttributeInfo</tt> structures.
*
* <p>An <tt>AttributeInfo</tt> of the appropriate subtype from the <tt>attributes</tt> package is
* created unless the type of the attribute is unknown in which case an instance of
* <tt>AttributeInfo</tt> is returned.
*
* <p>
*
* <p>Attributes are skipped if the environment variable <tt>SYSTEM_PROPERTY_SKIP_ATTRIBUTES</tt>
* is set to true.
*
* @param in the <tt>DataInput</tt> from which to read the <tt>AttributeInfo</tt> structure
* @param classFile the parent class file of the structure to be created
* @return the new <tt>AttributeInfo</tt> structure
* @throws InvalidByteCodeException if the byte code is invalid
* @throws IOException if an exception occurs with the <tt>DataInput</tt>
*/
public static AttributeInfo createOrSkip(DataInput in, ClassFile classFile)
throws InvalidByteCodeException, IOException {
AttributeInfo attributeInfo = null;
if (Boolean.getBoolean(SYSTEM_PROPERTY_SKIP_ATTRIBUTES)) {
in.skipBytes(2);
in.skipBytes(in.readInt());
} else {
int attributeNameIndex = in.readUnsignedShort();
int attributeLength = in.readInt();
ConstantUtf8Info cpInfoName = classFile.getConstantPoolUtf8Entry(attributeNameIndex);
String attributeName = null;
if (cpInfoName == null) {
return null;
}
attributeName = cpInfoName.getString();
if (ConstantValueAttribute.ATTRIBUTE_NAME.equals(attributeName)) {
attributeInfo = new ConstantValueAttribute();
} else if (CodeAttribute.ATTRIBUTE_NAME.equals(attributeName)) {
attributeInfo = new CodeAttribute();
} else if (ExceptionsAttribute.ATTRIBUTE_NAME.equals(attributeName)) {
attributeInfo = new ExceptionsAttribute();
} else if (InnerClassesAttribute.ATTRIBUTE_NAME.equals(attributeName)) {
attributeInfo = new InnerClassesAttribute();
} else if (SyntheticAttribute.ATTRIBUTE_NAME.equals(attributeName)) {
attributeInfo = new SyntheticAttribute();
} else if (SourceFileAttribute.ATTRIBUTE_NAME.equals(attributeName)) {
attributeInfo = new SourceFileAttribute();
} else if (LineNumberTableAttribute.ATTRIBUTE_NAME.equals(attributeName)) {
attributeInfo = new LineNumberTableAttribute();
} else if (LocalVariableTableAttribute.ATTRIBUTE_NAME.equals(attributeName)) {
attributeInfo = new LocalVariableTableAttribute();
} else if (DeprecatedAttribute.ATTRIBUTE_NAME.equals(attributeName)) {
attributeInfo = new DeprecatedAttribute();
} else if (EnclosingMethodAttribute.ATTRIBUTE_NAME.equals(attributeName)) {
attributeInfo = new EnclosingMethodAttribute();
} else if (SignatureAttribute.ATTRIBUTE_NAME.equals(attributeName)) {
attributeInfo = new SignatureAttribute();
} else if (LocalVariableTypeTableAttribute.ATTRIBUTE_NAME.equals(attributeName)) {
attributeInfo = new LocalVariableTypeTableAttribute();
} else if (RuntimeVisibleAnnotationsAttribute.ATTRIBUTE_NAME.equals(attributeName)) {
attributeInfo = new RuntimeVisibleAnnotationsAttribute();
} else if (RuntimeInvisibleAnnotationsAttribute.ATTRIBUTE_NAME.equals(attributeName)) {
attributeInfo = new RuntimeInvisibleAnnotationsAttribute();
} else if (AnnotationDefaultAttribute.ATTRIBUTE_NAME.equals(attributeName)) {
attributeInfo = new AnnotationDefaultAttribute();
} else if (BootstrapMethodsAttribute.ATTRIBUTE_NAME.equals(attributeName)) {
attributeInfo = new BootstrapMethodsAttribute(attributeLength);
} else {
attributeInfo = new AttributeInfo(attributeLength);
}
attributeInfo.setAttributeNameIndex(attributeNameIndex);
attributeInfo.setClassFile(classFile);
attributeInfo.read(in);
}
return attributeInfo;
}
