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jode/jode/jode/bytecode/AttributeInfo.java

84 lines
2.7 KiB

/* jode.bytecode.AttributeInfo Copyright (C) 1997-1998 Jochen Hoenicke.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id$
*/
package jode.bytecode;
import jode.TabbedPrintWriter;
import java.io.*;
import java.lang.reflect.Modifier;
public class AttributeInfo {
ClassInfo classinfo;
String name;
byte[] data;
public AttributeInfo() {
}
public void read(ConstantPool constantPool,
DataInputStream input, int howMuch) throws IOException {
String attrName = constantPool.getUTF8(input.readUnsignedShort());
int length = input.readInt();
if ((howMuch & ClassInfo.ALL_ATTRIBUTES) != 0) {
name = attrName;
data = new byte[length];
input.readFully(data);
} else
input.skip(length);
}
public String getName() {
return name;
}
public byte[] getContents() {
return data;
}
static final char hex[] = { '0','1','2','3','4','5','6','7',
'8','9','a','b','c','d','e','f' };
public void dumpSource(TabbedPrintWriter writer) throws IOException{
if (data != null) {
writer.println("/* Attribute "+name+" ["+data.length+"]");
writer.tab();
StringBuffer sb = new StringBuffer();
for (int i=0; i< data.length; i++) {
byte b = data[i];
int h = (b<0)?b+256:b;
writer.print(" " + hex[h/16] + hex[h%16]);
if (b >=32 && b < 127) {
sb.append((char)b);
} else {
sb.append(".");
}
if (i % 16 == 15) {
writer.println(" "+sb.toString());
sb.setLength(0);
}
}
if ((data.length % 16) != 0) {
for (int i=data.length % 16; i<16; i++)
writer.print(" ");
writer.println(" "+sb.toString());
}
writer.untab();
writer.println("*/");
}
}
}