/*
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* The contents of this file are subject to the terms of the Common Development and
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* Distribution License (the License). You may not use this file except in compliance with the
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* License.
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*
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* You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
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* specific language governing permission and limitations under the License.
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*
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* When distributing Covered Software, include this CDDL Header Notice in each file and include
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* the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
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* Header, with the fields enclosed by brackets [] replaced by your own identifying
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* information: "Portions Copyright [year] [name of copyright owner]".
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*
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* Copyright 2008-2009 Sun Microsystems, Inc.
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* Portions Copyright 2015-2016 ForgeRock AS.
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*/
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package org.opends.guitools.controlpanel.datamodel;
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import java.io.File;
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import java.text.ParseException;
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import java.util.Objects;
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import org.forgerock.opendj.ldap.Base64;
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/**
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* Class used to represent Binary Values. This is required in particular
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* when the user wants to use the value in a file. To be able to reflect
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* this this object is used: it contains the binary itself, the base 64
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* representation and the file that has been used.
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*/
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public class BinaryValue
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{
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private Type type;
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private String base64;
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private byte[] bytes;
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private File file;
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private int hashCode;
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/** The type of the binary value. */
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public enum Type
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{
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/** The binary value is provided as Base 64 string. */
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BASE64_STRING,
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/** The binary value is provided as a byte array. */
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BYTE_ARRAY
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}
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/** This is done to force the use of the factory methods (createBase64 and createFromFile). */
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private BinaryValue()
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{
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}
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/**
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* Creates a binary value using a base64 string.
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* @param base64 the base64 representation of the binary.
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* @return the binary value.
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* @throws ParseException if there is an error decoding the provided base64
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* string.
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*/
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public static BinaryValue createBase64(String base64) throws ParseException
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{
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BinaryValue value = new BinaryValue();
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value.type = Type.BASE64_STRING;
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value.base64 = base64;
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value.bytes = value.getBytes();
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value.hashCode = base64.hashCode();
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return value;
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}
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/**
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* Creates a binary value using an array of bytes.
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* @param bytes the byte array.
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* @return the binary value.
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*/
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public static BinaryValue createBase64(byte[] bytes)
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{
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BinaryValue value = new BinaryValue();
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value.type = Type.BASE64_STRING;
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value.bytes = bytes;
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value.base64 = value.getBase64();
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value.hashCode = value.base64.hashCode();
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return value;
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}
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/**
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* Creates a binary value using an array of bytes and a file.
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* @param bytes the bytes in the file.
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* @param file the file the bytes were read from.
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* @return the binary value.
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*/
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public static BinaryValue createFromFile(byte[] bytes, File file)
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{
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BinaryValue value = new BinaryValue();
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value.type = Type.BYTE_ARRAY;
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value.bytes = bytes;
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value.base64 = value.getBase64();
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value.hashCode = value.base64.hashCode();
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value.file = file;
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return value;
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}
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/**
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* Returns the base64 representation of the binary value.
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* @return the base64 representation of the binary value.
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*/
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public String getBase64()
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{
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if (base64 == null && bytes != null)
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{
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base64 = Base64.encode(bytes);
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}
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return base64;
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}
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/**
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* Returns the byte array of the binary value.
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* @return the byte array of the binary value.
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* @throws ParseException if this object was created using a base64 string
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* and there was an error parsing it.
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*/
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public byte[] getBytes() throws ParseException
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{
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if (bytes == null && base64 != null)
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{
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bytes = Base64.decode(base64).toByteArray();
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}
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return bytes;
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}
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/**
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* Return the type of the binary value.
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* @return the type of the binary value.
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*/
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public Type getType()
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{
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return type;
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}
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/**
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* Return the file that was used to read the binary value.
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* @return the file that was used to read the binary value.
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*/
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public File getFile()
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{
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return file;
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}
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@Override
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public boolean equals(Object o)
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{
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if (this == o)
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{
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return true;
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}
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if (o instanceof BinaryValue)
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{
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BinaryValue candidate = (BinaryValue)o;
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return candidate.getType() == getType()
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&& Objects.equals(file, candidate.getFile())
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&& bytesEqual(candidate);
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}
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return false;
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}
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private boolean bytesEqual(BinaryValue candidate)
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{
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if (type == Type.BASE64_STRING)
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{
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return candidate.getBase64().equals(getBase64());
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}
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try
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{
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if (candidate.getBytes().length != getBytes().length) {
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return false;
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}
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boolean equals = true;
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for (int i=0; i<getBytes().length && equals; i++)
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{
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equals = bytes[i] == candidate.getBytes()[i];
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}
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return equals;
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}
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catch (ParseException pe)
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{
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throw new RuntimeException(
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"Unexpected error getting bytes: "+pe, pe);
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}
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}
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@Override
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public int hashCode()
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{
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return hashCode;
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}
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}
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