001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.commons.compress.harmony.unpack200.bytecode; 018 019import java.io.DataOutputStream; 020import java.io.IOException; 021import java.util.Objects; 022 023/** 024 * Source file class file attribute 025 */ 026public class SourceFileAttribute extends Attribute { 027 028 private static CPUTF8 attributeName; 029 public static void setAttributeName(final CPUTF8 cpUTF8Value) { 030 attributeName = cpUTF8Value; 031 } 032 private final CPUTF8 name; 033 034 private int nameIndex; 035 036 public SourceFileAttribute(final CPUTF8 name) { 037 super(attributeName); 038 this.name = name; 039 } 040 041 @Override 042 public boolean equals(final Object obj) { 043 if (this == obj) { 044 return true; 045 } 046 if (!super.equals(obj)) { 047 return false; 048 } 049 if (this.getClass() != obj.getClass()) { 050 return false; 051 } 052 final SourceFileAttribute other = (SourceFileAttribute) obj; 053 if (!Objects.equals(name, other.name)) { 054 return false; 055 } 056 return true; 057 } 058 059 @Override 060 protected int getLength() { 061 return 2; 062 } 063 064 @Override 065 protected ClassFileEntry[] getNestedClassFileEntries() { 066 return new ClassFileEntry[] {getAttributeName(), name}; 067 } 068 069 @Override 070 public int hashCode() { 071 final int PRIME = 31; 072 int result = super.hashCode(); 073 result = PRIME * result + (name == null ? 0 : name.hashCode()); 074 return result; 075 } 076 077 /* 078 * (non-Javadoc) 079 * 080 * @see org.apache.commons.compress.harmony.unpack200.bytecode.Attribute#isSourceFileAttribute() 081 */ 082 @Override 083 public boolean isSourceFileAttribute() { 084 return true; 085 } 086 087 @Override 088 protected void resolve(final ClassConstantPool pool) { 089 super.resolve(pool); 090 nameIndex = pool.indexOf(name); 091 } 092 093 @Override 094 public String toString() { 095 return "SourceFile: " + name; 096 } 097 098 @Override 099 protected void writeBody(final DataOutputStream dos) throws IOException { 100 dos.writeShort(nameIndex); 101 } 102}