| <?xml version="1.0" encoding="UTF-8"?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml" lang="en"><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/><link rel="stylesheet" href="../../jacoco-resources/report.css" type="text/css"/><link rel="shortcut icon" href="../../jacoco-resources/report.gif" type="image/gif"/><title>Hex.java</title><link rel="stylesheet" href="../../jacoco-resources/prettify.css" type="text/css"/><script type="text/javascript" src="../../jacoco-resources/prettify.js"></script></head><body onload="window['PR_TAB_WIDTH']=4;prettyPrint()"><div class="breadcrumb" id="breadcrumb"><span class="info"><a href="../../jacoco-sessions.html" class="el_session">Sessions</a></span><a href="../../index.html" class="el_report">Apache Shiro :: All (aggregate jar)</a> > <a href="../index.html" class="el_bundle">shiro-lang</a> > <a href="index.source.html" class="el_package">org.apache.shiro.codec</a> > <span class="el_source">Hex.java</span></div><h1>Hex.java</h1><pre class="source lang-java linenums">/* |
| * 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.shiro.codec; |
| |
| /** |
| * <a href="http://en.wikipedia.org/wiki/Hexadecimal">Hexadecimal</a> encoder and decoder. |
| * <p/> |
| * This class was borrowed from Apache Commons Codec SVN repository (rev. {@code 560660}) with modifications |
| * to enable Hex conversion without a full dependency on Commons Codec. We didn't want to reinvent the wheel of |
| * great work they've done, but also didn't want to force every Shiro user to depend on the commons-codec.jar |
| * <p/> |
| * As per the Apache 2.0 license, the original copyright notice and all author and copyright information have |
| * remained in tact. |
| * |
| * @see <a href="http://en.wikipedia.org/wiki/Hexadecimal">Wikipedia: Hexadecimal</a> |
| * @since 0.9 |
| */ |
| <span class="nc" id="L34">public class Hex {</span> |
| |
| /** |
| * Used to build output as Hex |
| */ |
| <span class="fc" id="L39"> private static final char[] DIGITS = {</span> |
| '0', '1', '2', '3', '4', '5', '6', '7', |
| '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' |
| }; |
| |
| /** |
| * Encodes the specified byte array to a character array and then returns that character array |
| * as a String. |
| * |
| * @param bytes the byte array to Hex-encode. |
| * @return A String representation of the resultant hex-encoded char array. |
| */ |
| public static String encodeToString(byte[] bytes) { |
| <span class="fc" id="L52"> char[] encodedChars = encode(bytes);</span> |
| <span class="fc" id="L53"> return new String(encodedChars);</span> |
| } |
| |
| /** |
| * Converts an array of bytes into an array of characters representing the hexadecimal values of each byte in order. |
| * The returned array will be double the length of the passed array, as it takes two characters to represent any |
| * given byte. |
| * |
| * @param data byte[] to convert to Hex characters |
| * @return A char[] containing hexadecimal characters |
| */ |
| public static char[] encode(byte[] data) { |
| |
| <span class="fc" id="L66"> int l = data.length;</span> |
| |
| <span class="fc" id="L68"> char[] out = new char[l << 1];</span> |
| |
| // two characters form the hex value. |
| <span class="fc bfc" id="L71" title="All 2 branches covered."> for (int i = 0, j = 0; i < l; i++) {</span> |
| <span class="fc" id="L72"> out[j++] = DIGITS[(0xF0 & data[i]) >>> 4];</span> |
| <span class="fc" id="L73"> out[j++] = DIGITS[0x0F & data[i]];</span> |
| } |
| |
| <span class="fc" id="L76"> return out;</span> |
| } |
| |
| /** |
| * Converts an array of character bytes representing hexadecimal values into an |
| * array of bytes of those same values. The returned array will be half the |
| * length of the passed array, as it takes two characters to represent any |
| * given byte. An exception is thrown if the passed char array has an odd |
| * number of elements. |
| * |
| * @param array An array of character bytes containing hexadecimal digits |
| * @return A byte array containing binary data decoded from |
| * the supplied byte array (representing characters). |
| * @throws IllegalArgumentException Thrown if an odd number of characters is supplied |
| * to this function |
| * @see #decode(char[]) |
| */ |
| public static byte[] decode(byte[] array) throws IllegalArgumentException { |
| <span class="fc" id="L94"> String s = CodecSupport.toString(array);</span> |
| <span class="fc" id="L95"> return decode(s);</span> |
| } |
| |
| /** |
| * Converts the specified Hex-encoded String into a raw byte array. This is a |
| * convenience method that merely delegates to {@link #decode(char[])} using the |
| * argument's hex.toCharArray() value. |
| * |
| * @param hex a Hex-encoded String. |
| * @return A byte array containing binary data decoded from the supplied String's char array. |
| */ |
| public static byte[] decode(String hex) { |
| <span class="fc" id="L107"> return decode(hex.toCharArray());</span> |
| } |
| |
| /** |
| * Converts an array of characters representing hexadecimal values into an |
| * array of bytes of those same values. The returned array will be half the |
| * length of the passed array, as it takes two characters to represent any |
| * given byte. An exception is thrown if the passed char array has an odd |
| * number of elements. |
| * |
| * @param data An array of characters containing hexadecimal digits |
| * @return A byte array containing binary data decoded from |
| * the supplied char array. |
| * @throws IllegalArgumentException if an odd number or illegal of characters |
| * is supplied |
| */ |
| public static byte[] decode(char[] data) throws IllegalArgumentException { |
| |
| <span class="fc" id="L125"> int len = data.length;</span> |
| |
| <span class="pc bpc" id="L127" title="1 of 2 branches missed."> if ((len & 0x01) != 0) {</span> |
| <span class="nc" id="L128"> throw new IllegalArgumentException("Odd number of characters.");</span> |
| } |
| |
| <span class="fc" id="L131"> byte[] out = new byte[len >> 1];</span> |
| |
| // two characters form the hex value. |
| <span class="fc bfc" id="L134" title="All 2 branches covered."> for (int i = 0, j = 0; j < len; i++) {</span> |
| <span class="fc" id="L135"> int f = toDigit(data[j], j) << 4;</span> |
| <span class="fc" id="L136"> j++;</span> |
| <span class="fc" id="L137"> f = f | toDigit(data[j], j);</span> |
| <span class="fc" id="L138"> j++;</span> |
| <span class="fc" id="L139"> out[i] = (byte) (f & 0xFF);</span> |
| } |
| |
| <span class="fc" id="L142"> return out;</span> |
| } |
| |
| /** |
| * Converts a hexadecimal character to an integer. |
| * |
| * @param ch A character to convert to an integer digit |
| * @param index The index of the character in the source |
| * @return An integer |
| * @throws IllegalArgumentException if ch is an illegal hex character |
| */ |
| protected static int toDigit(char ch, int index) throws IllegalArgumentException { |
| <span class="fc" id="L154"> int digit = Character.digit(ch, 16);</span> |
| <span class="pc bpc" id="L155" title="1 of 2 branches missed."> if (digit == -1) {</span> |
| <span class="nc" id="L156"> throw new IllegalArgumentException("Illegal hexadecimal character " + ch + " at index " + index);</span> |
| } |
| <span class="fc" id="L158"> return digit;</span> |
| } |
| |
| |
| } |
| </pre><div class="footer"><span class="right">Created with <a href="http://www.eclemma.org/jacoco">JaCoCo</a> 0.7.7.201606060606</span></div></body></html> |
