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/* FJBG -- Fast Java Bytecode Generator
* Copyright 2002-2012 LAMP/EPFL
* @author Michel Schinz
*/
package ch.epfl.lamp.fjbg;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
/**
* Attributes which are unknown to the JVM (or at least to this library).
*
* @author Michel Schinz
* @version 1.0
*/
public class JOtherAttribute extends JAttribute {
protected final String name;
protected final byte[] contents;
protected final int length;
public JOtherAttribute(FJBGContext context,
JClass clazz,
Object owner,
String name,
byte[] contents,
int length) {
super(context, clazz, name);
this.name = name;
this.contents = contents;
this.length = length;
}
public JOtherAttribute(FJBGContext context,
JClass clazz,
Object owner,
String name,
int size,
DataInputStream stream)
throws IOException {
super(context, clazz, name);
this.name = name;
this.contents = new byte[size];
this.length = size;
stream.read(contents, 0, length);
}
public String getName() { return name; }
// Follows javap output format for user-defined attributes.
/*@Override*/ public String toString() {
StringBuffer buf = new StringBuffer(" ");
buf.append(name);
buf.append(": length = 0x");
buf.append(Integer.toHexString(length).toUpperCase());
for (int i = 0; i < length; ++i) {
if (i % 16 == 0) buf.append("\n ");
buf.append(hexString(contents[i]));
buf.append(" ");
}
buf.append("\n");
return buf.toString();
}
protected int getSize() { return length; }
protected void writeContentsTo(DataOutputStream stream) throws IOException {
stream.write(contents, 0, length);
}
private static final String hexString(int i) {
return ((0 <= i && i < 16) ? "0" : "")+Integer.toHexString(i).toUpperCase();
}
}
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