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Apache Commons Compress software defines an API for working with
compression and archive formats. These include: bzip2, gzip, pack200,
lzma, xz, Snappy, traditional Unix Compress, DEFLATE, DEFLATE64, LZ4,
Brotli, Zstandard and ar, cpio, jar, tar, zip, dump, 7z, arj.
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.compress.harmony.unpack200.bytecode;
import java.io.DataOutputStream;
import java.io.IOException;
/**
* UTF8 constant pool entry, used for storing long Strings.
*/
public class CPUTF8 extends ConstantPoolEntry {
private final String utf8;
/**
* Creates a new CPUTF8 instance
*
* @param utf8 TODO
* @param globalIndex - index in CpBands
* @throws NullPointerException if utf8 is null
*/
public CPUTF8(final String utf8, final int globalIndex) {
super(ConstantPoolEntry.CP_UTF8, globalIndex);
this.utf8 = utf8;
if (utf8 == null) {
throw new NullPointerException("Null arguments are not allowed");
}
}
public CPUTF8(final String string) {
this(string, -1);
}
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (this.getClass() != obj.getClass()) {
return false;
}
final CPUTF8 other = (CPUTF8) obj;
return utf8.equals(other.utf8);
}
private boolean hashcodeComputed;
private int cachedHashCode;
private void generateHashCode() {
hashcodeComputed = true;
final int PRIME = 31;
cachedHashCode = PRIME + utf8.hashCode();
}
@Override
public int hashCode() {
if (!hashcodeComputed) {
generateHashCode();
}
return cachedHashCode;
}
@Override
public String toString() {
return "UTF8: " + utf8;
}
@Override
protected void writeBody(final DataOutputStream dos) throws IOException {
dos.writeUTF(utf8);
}
public String underlyingString() {
return utf8;
}
public void setGlobalIndex(final int index) {
globalIndex = index;
}
}