001// *************************************************************************************************************************** 002// * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file * 003// * distributed with this work for additional information regarding copyright ownership. The ASF licenses this file * 004// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance * 005// * with the License. You may obtain a copy of the License at * 006// * * 007// * http://www.apache.org/licenses/LICENSE-2.0 * 008// * * 009// * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an * 010// * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the * 011// * specific language governing permissions and limitations under the License. * 012// *************************************************************************************************************************** 013package org.apache.juneau.transforms; 014 015import static org.apache.juneau.internal.StringUtils.*; 016 017import org.apache.juneau.*; 018import org.apache.juneau.transform.*; 019 020/** 021 * Transforms <code><jk>byte</jk>[]</code> arrays to Strings. 022 */ 023public abstract class ByteArraySwap extends StringSwap<byte[]> { 024 025 /** 026 * Converts byte arrays to BASE-64 encoding. 027 */ 028 public static class Base64 extends ByteArraySwap { 029 /** 030 * Converts the specified <code><jk>byte</jk>[]</code> to a {@link String}. 031 */ 032 @Override /* PojoSwap */ 033 public String swap(BeanSession session, byte[] b) throws Exception { 034 return base64Encode(b); 035 } 036 037 /** 038 * Converts the specified {@link String} to a <code><jk>byte</jk>[]</code>. 039 */ 040 @Override /* PojoSwap */ 041 public byte[] unswap(BeanSession session, String s, ClassMeta<?> hint) throws Exception { 042 return base64Decode(s); 043 } 044 } 045 046 /** 047 * Converts byte arrays to hex encoding. 048 */ 049 public static class Hex extends ByteArraySwap { 050 /** 051 * Converts the specified <code><jk>byte</jk>[]</code> to a {@link String}. 052 */ 053 @Override /* PojoSwap */ 054 public String swap(BeanSession session, byte[] b) throws Exception { 055 return toHex(b); 056 } 057 058 /** 059 * Converts the specified {@link String} to a <code><jk>byte</jk>[]</code>. 060 */ 061 @Override /* PojoSwap */ 062 public byte[] unswap(BeanSession session, String s, ClassMeta<?> hint) throws Exception { 063 return fromHex(s); 064 } 065 } 066 067 /** 068 * Converts byte arrays to spaced-hex encoding. 069 */ 070 public static class SpacedHex extends ByteArraySwap { 071 /** 072 * Converts the specified <code><jk>byte</jk>[]</code> to a {@link String}. 073 */ 074 @Override /* PojoSwap */ 075 public String swap(BeanSession session, byte[] b) throws Exception { 076 return toSpacedHex(b); 077 } 078 079 /** 080 * Converts the specified {@link String} to a <code><jk>byte</jk>[]</code>. 081 */ 082 @Override /* PojoSwap */ 083 public byte[] unswap(BeanSession session, String s, ClassMeta<?> hint) throws Exception { 084 return fromSpacedHex(s); 085 } 086 } 087}