| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> |
| <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> |
| <head><meta http-equiv="content-type" content="text/html; charset=UTF-8" /> |
| <title>OpenBSDBase64 xref</title> |
| <link type="text/css" rel="stylesheet" href="../../../../../../../stylesheet.css" /> |
| </head> |
| <body> |
| <div id="overview"><a href="../../../../../../../../apidocs/org/apache/shiro/crypto/support/hashes/bcrypt/OpenBSDBase64.html">View Javadoc</a></div><pre> |
| <a class="jxr_linenumber" name="L1" href="#L1">1</a> <em class="jxr_comment">/*</em> |
| <a class="jxr_linenumber" name="L2" href="#L2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one</em> |
| <a class="jxr_linenumber" name="L3" href="#L3">3</a> <em class="jxr_comment"> * or more contributor license agreements. See the NOTICE file</em> |
| <a class="jxr_linenumber" name="L4" href="#L4">4</a> <em class="jxr_comment"> * distributed with this work for additional information</em> |
| <a class="jxr_linenumber" name="L5" href="#L5">5</a> <em class="jxr_comment"> * regarding copyright ownership. The ASF licenses this file</em> |
| <a class="jxr_linenumber" name="L6" href="#L6">6</a> <em class="jxr_comment"> * to you under the Apache License, Version 2.0 (the</em> |
| <a class="jxr_linenumber" name="L7" href="#L7">7</a> <em class="jxr_comment"> * "License"); you may not use this file except in compliance</em> |
| <a class="jxr_linenumber" name="L8" href="#L8">8</a> <em class="jxr_comment"> * with the License. You may obtain a copy of the License at</em> |
| <a class="jxr_linenumber" name="L9" href="#L9">9</a> <em class="jxr_comment"> *</em> |
| <a class="jxr_linenumber" name="L10" href="#L10">10</a> <em class="jxr_comment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em> |
| <a class="jxr_linenumber" name="L11" href="#L11">11</a> <em class="jxr_comment"> *</em> |
| <a class="jxr_linenumber" name="L12" href="#L12">12</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing,</em> |
| <a class="jxr_linenumber" name="L13" href="#L13">13</a> <em class="jxr_comment"> * software distributed under the License is distributed on an</em> |
| <a class="jxr_linenumber" name="L14" href="#L14">14</a> <em class="jxr_comment"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</em> |
| <a class="jxr_linenumber" name="L15" href="#L15">15</a> <em class="jxr_comment"> * KIND, either express or implied. See the License for the</em> |
| <a class="jxr_linenumber" name="L16" href="#L16">16</a> <em class="jxr_comment"> * specific language governing permissions and limitations</em> |
| <a class="jxr_linenumber" name="L17" href="#L17">17</a> <em class="jxr_comment"> * under the License.</em> |
| <a class="jxr_linenumber" name="L18" href="#L18">18</a> <em class="jxr_comment"> */</em> |
| <a class="jxr_linenumber" name="L19" href="#L19">19</a> |
| <a class="jxr_linenumber" name="L20" href="#L20">20</a> <strong class="jxr_keyword">package</strong> org.apache.shiro.crypto.support.hashes.bcrypt; |
| <a class="jxr_linenumber" name="L21" href="#L21">21</a> |
| <a class="jxr_linenumber" name="L22" href="#L22">22</a> |
| <a class="jxr_linenumber" name="L23" href="#L23">23</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L24" href="#L24">24</a> <em class="jxr_javadoccomment"> * Encoder for the custom Base64 variant of BCrypt (called Radix64 here). It has the same rules as Base64 but uses a</em> |
| <a class="jxr_linenumber" name="L25" href="#L25">25</a> <em class="jxr_javadoccomment"> * different mapping table than the various RFCs</em> |
| <a class="jxr_linenumber" name="L26" href="#L26">26</a> <em class="jxr_javadoccomment"> * <p></em> |
| <a class="jxr_linenumber" name="L27" href="#L27">27</a> <em class="jxr_javadoccomment"> * According to Wikipedia:</em> |
| <a class="jxr_linenumber" name="L28" href="#L28">28</a> <em class="jxr_javadoccomment"> *</em> |
| <a class="jxr_linenumber" name="L29" href="#L29">29</a> <em class="jxr_javadoccomment"> * <blockquote></em> |
| <a class="jxr_linenumber" name="L30" href="#L30">30</a> <em class="jxr_javadoccomment"> * Unix stores password hashes computed with crypt in the /etc/passwd file using radix-64 encoding called B64. It uses a</em> |
| <a class="jxr_linenumber" name="L31" href="#L31">31</a> <em class="jxr_javadoccomment"> * mostly-alphanumeric set of characters, plus . and /.</em> |
| <a class="jxr_linenumber" name="L32" href="#L32">32</a> <em class="jxr_javadoccomment"> * Its 64-character set is "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".</em> |
| <a class="jxr_linenumber" name="L33" href="#L33">33</a> <em class="jxr_javadoccomment"> * Padding is not used.</em> |
| <a class="jxr_linenumber" name="L34" href="#L34">34</a> <em class="jxr_javadoccomment"> * </blockquote></em> |
| <a class="jxr_linenumber" name="L35" href="#L35">35</a> <em class="jxr_javadoccomment"> *</em> |
| <a class="jxr_linenumber" name="L36" href="#L36">36</a> <em class="jxr_javadoccomment"> * @since 2.0</em> |
| <a class="jxr_linenumber" name="L37" href="#L37">37</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L38" href="#L38">38</a> @SuppressWarnings({<span class="jxr_string">"checkstyle:MagicNumber"</span>, <span class="jxr_string">"checkstyle:BooleanExpressionComplexity"</span>, |
| <a class="jxr_linenumber" name="L39" href="#L39">39</a> <span class="jxr_string">"checkstyle:NPathComplexity"</span>, <span class="jxr_string">"checkstyle:CyclomaticComplexity"</span>}) |
| <a class="jxr_linenumber" name="L40" href="#L40">40</a> <strong class="jxr_keyword">interface</strong> OpenBSDBase64 { |
| <a class="jxr_linenumber" name="L41" href="#L41">41</a> |
| <a class="jxr_linenumber" name="L42" href="#L42">42</a> |
| <a class="jxr_linenumber" name="L43" href="#L43">43</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L44" href="#L44">44</a> <em class="jxr_javadoccomment"> * Encode given raw byte array to a Radix64 style, UTF-8 encoded byte array.</em> |
| <a class="jxr_linenumber" name="L45" href="#L45">45</a> <em class="jxr_javadoccomment"> *</em> |
| <a class="jxr_linenumber" name="L46" href="#L46">46</a> <em class="jxr_javadoccomment"> * @param rawBytes to encode</em> |
| <a class="jxr_linenumber" name="L47" href="#L47">47</a> <em class="jxr_javadoccomment"> * @return UTF-8 encoded string representing radix64 encoded data</em> |
| <a class="jxr_linenumber" name="L48" href="#L48">48</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L49" href="#L49">49</a> byte[] encode(byte[] rawBytes); |
| <a class="jxr_linenumber" name="L50" href="#L50">50</a> |
| <a class="jxr_linenumber" name="L51" href="#L51">51</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L52" href="#L52">52</a> <em class="jxr_javadoccomment"> * From a UTF-8 encoded string representing radix64 encoded data as byte array,</em> |
| <a class="jxr_linenumber" name="L53" href="#L53">53</a> <em class="jxr_javadoccomment"> * decodes the raw bytes from it.</em> |
| <a class="jxr_linenumber" name="L54" href="#L54">54</a> <em class="jxr_javadoccomment"> *</em> |
| <a class="jxr_linenumber" name="L55" href="#L55">55</a> <em class="jxr_javadoccomment"> * @param utf8EncodedRadix64String from a string get it with</em> |
| <a class="jxr_linenumber" name="L56" href="#L56">56</a> <em class="jxr_javadoccomment"> * <code>"m0CrhHm10qJ3lXRY.5zDGO".getBytes(StandardCharsets.UTF8)</code></em> |
| <a class="jxr_linenumber" name="L57" href="#L57">57</a> <em class="jxr_javadoccomment"> * @return the raw bytes encoded by this utf-8 radix4 string</em> |
| <a class="jxr_linenumber" name="L58" href="#L58">58</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L59" href="#L59">59</a> byte[] decode(byte[] utf8EncodedRadix64String); |
| <a class="jxr_linenumber" name="L60" href="#L60">60</a> |
| <a class="jxr_linenumber" name="L61" href="#L61">61</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="L62" href="#L62">62</a> <em class="jxr_javadoccomment"> * A mod of Square's Okio Base64 encoder</em> |
| <a class="jxr_linenumber" name="L63" href="#L63">63</a> <em class="jxr_javadoccomment"> * <p></em> |
| <a class="jxr_linenumber" name="L64" href="#L64">64</a> <em class="jxr_javadoccomment"> * Original author: Alexander Y. Kleymenov</em> |
| <a class="jxr_linenumber" name="L65" href="#L65">65</a> <em class="jxr_javadoccomment"> *</em> |
| <a class="jxr_linenumber" name="L66" href="#L66">66</a> <em class="jxr_javadoccomment"> * @see <a href="<a href="https://github.com/square/okio/blob/okio-parent-1.15.0/okio/src/main/java/okio/Base64.java" target="alexandria_uri">https://github.com/square/okio/blob/okio-parent-1.15.0/okio/src/main/java/okio/Base64.java</a>">Okio</a></em> |
| <a class="jxr_linenumber" name="L67" href="#L67">67</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="L68" href="#L68">68</a> <strong class="jxr_keyword">class</strong> Default <strong class="jxr_keyword">implements</strong> OpenBSDBase64 { |
| <a class="jxr_linenumber" name="L69" href="#L69">69</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> byte[] DECODE_TABLE = { |
| <a class="jxr_linenumber" name="L70" href="#L70">70</a> -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| <a class="jxr_linenumber" name="L71" href="#L71">71</a> -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| <a class="jxr_linenumber" name="L72" href="#L72">72</a> -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 54, 55, 56, 57, |
| <a class="jxr_linenumber" name="L73" href="#L73">73</a> 58, 59, 60, 61, 62, 63, -1, -1, -1, -2, -1, -1, -1, 2, 3, 4, 5, 6, 7, |
| <a class="jxr_linenumber" name="L74" href="#L74">74</a> 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, |
| <a class="jxr_linenumber" name="L75" href="#L75">75</a> 26, 27, -1, -1, -1, -1, -1, -1, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, |
| <a class="jxr_linenumber" name="L76" href="#L76">76</a> 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53}; |
| <a class="jxr_linenumber" name="L77" href="#L77">77</a> |
| <a class="jxr_linenumber" name="L78" href="#L78">78</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> byte[] MAP = <strong class="jxr_keyword">new</strong> byte[] { |
| <a class="jxr_linenumber" name="L79" href="#L79">79</a> '.', '/', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', |
| <a class="jxr_linenumber" name="L80" href="#L80">80</a> 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', |
| <a class="jxr_linenumber" name="L81" href="#L81">81</a> 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', |
| <a class="jxr_linenumber" name="L82" href="#L82">82</a> 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', |
| <a class="jxr_linenumber" name="L83" href="#L83">83</a> 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', |
| <a class="jxr_linenumber" name="L84" href="#L84">84</a> '6', '7', '8', '9' |
| <a class="jxr_linenumber" name="L85" href="#L85">85</a> }; |
| <a class="jxr_linenumber" name="L86" href="#L86">86</a> |
| <a class="jxr_linenumber" name="L87" href="#L87">87</a> @Override |
| <a class="jxr_linenumber" name="L88" href="#L88">88</a> <strong class="jxr_keyword">public</strong> byte[] encode(<strong class="jxr_keyword">final</strong> byte[] in) { |
| <a class="jxr_linenumber" name="L89" href="#L89">89</a> <strong class="jxr_keyword">return</strong> encode(in, MAP); |
| <a class="jxr_linenumber" name="L90" href="#L90">90</a> } |
| <a class="jxr_linenumber" name="L91" href="#L91">91</a> |
| <a class="jxr_linenumber" name="L92" href="#L92">92</a> @Override |
| <a class="jxr_linenumber" name="L93" href="#L93">93</a> <strong class="jxr_keyword">public</strong> byte[] decode(<strong class="jxr_keyword">final</strong> byte[] in) { |
| <a class="jxr_linenumber" name="L94" href="#L94">94</a> <em class="jxr_comment">// Ignore trailing '=' padding and whitespace from the input.</em> |
| <a class="jxr_linenumber" name="L95" href="#L95">95</a> <strong class="jxr_keyword">int</strong> limit = in.length; |
| <a class="jxr_linenumber" name="L96" href="#L96">96</a> <strong class="jxr_keyword">for</strong> (; limit > 0; limit--) { |
| <a class="jxr_linenumber" name="L97" href="#L97">97</a> <strong class="jxr_keyword">final</strong> byte c = in[limit - 1]; |
| <a class="jxr_linenumber" name="L98" href="#L98">98</a> <strong class="jxr_keyword">if</strong> (c != '=' && c != '\n' && c != '\r' && c != ' ' && c != '\t') { |
| <a class="jxr_linenumber" name="L99" href="#L99">99</a> <strong class="jxr_keyword">break</strong>; |
| <a class="jxr_linenumber" name="L100" href="#L100">100</a> } |
| <a class="jxr_linenumber" name="L101" href="#L101">101</a> } |
| <a class="jxr_linenumber" name="L102" href="#L102">102</a> |
| <a class="jxr_linenumber" name="L103" href="#L103">103</a> <em class="jxr_comment">// If the input includes whitespace, this output array will be longer than necessary.</em> |
| <a class="jxr_linenumber" name="L104" href="#L104">104</a> <strong class="jxr_keyword">final</strong> byte[] out = <strong class="jxr_keyword">new</strong> byte[(<strong class="jxr_keyword">int</strong>) (limit * 6L / 8L)]; |
| <a class="jxr_linenumber" name="L105" href="#L105">105</a> <strong class="jxr_keyword">int</strong> outCount = 0; |
| <a class="jxr_linenumber" name="L106" href="#L106">106</a> <strong class="jxr_keyword">int</strong> inCount = 0; |
| <a class="jxr_linenumber" name="L107" href="#L107">107</a> |
| <a class="jxr_linenumber" name="L108" href="#L108">108</a> <strong class="jxr_keyword">int</strong> word = 0; |
| <a class="jxr_linenumber" name="L109" href="#L109">109</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> pos = 0; pos < limit; pos++) { |
| <a class="jxr_linenumber" name="L110" href="#L110">110</a> <strong class="jxr_keyword">final</strong> byte c = in[pos]; |
| <a class="jxr_linenumber" name="L111" href="#L111">111</a> |
| <a class="jxr_linenumber" name="L112" href="#L112">112</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> bits; |
| <a class="jxr_linenumber" name="L113" href="#L113">113</a> <strong class="jxr_keyword">if</strong> (c == '.' || c == '/' || (c >= 'A' && c <= 'z') || (c >= '0' && c <= '9')) { |
| <a class="jxr_linenumber" name="L114" href="#L114">114</a> bits = DECODE_TABLE[c]; |
| <a class="jxr_linenumber" name="L115" href="#L115">115</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (c == '\n' || c == '\r' || c == ' ' || c == '\t') { |
| <a class="jxr_linenumber" name="L116" href="#L116">116</a> <strong class="jxr_keyword">continue</strong>; |
| <a class="jxr_linenumber" name="L117" href="#L117">117</a> } <strong class="jxr_keyword">else</strong> { |
| <a class="jxr_linenumber" name="L118" href="#L118">118</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"invalid character to decode: "</span> + c); |
| <a class="jxr_linenumber" name="L119" href="#L119">119</a> } |
| <a class="jxr_linenumber" name="L120" href="#L120">120</a> |
| <a class="jxr_linenumber" name="L121" href="#L121">121</a> <em class="jxr_comment">// Append this char's 6 bits to the word.</em> |
| <a class="jxr_linenumber" name="L122" href="#L122">122</a> word = (word << 6) | (byte) bits; |
| <a class="jxr_linenumber" name="L123" href="#L123">123</a> |
| <a class="jxr_linenumber" name="L124" href="#L124">124</a> <em class="jxr_comment">// For every 4 chars of input, we accumulate 24 bits of output. Emit 3 bytes.</em> |
| <a class="jxr_linenumber" name="L125" href="#L125">125</a> inCount++; |
| <a class="jxr_linenumber" name="L126" href="#L126">126</a> <strong class="jxr_keyword">if</strong> (inCount % 4 == 0) { |
| <a class="jxr_linenumber" name="L127" href="#L127">127</a> out[outCount++] = (byte) (word >> 16); |
| <a class="jxr_linenumber" name="L128" href="#L128">128</a> out[outCount++] = (byte) (word >> 8); |
| <a class="jxr_linenumber" name="L129" href="#L129">129</a> out[outCount++] = (byte) word; |
| <a class="jxr_linenumber" name="L130" href="#L130">130</a> } |
| <a class="jxr_linenumber" name="L131" href="#L131">131</a> } |
| <a class="jxr_linenumber" name="L132" href="#L132">132</a> |
| <a class="jxr_linenumber" name="L133" href="#L133">133</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> lastWordChars = inCount % 4; |
| <a class="jxr_linenumber" name="L134" href="#L134">134</a> <strong class="jxr_keyword">if</strong> (lastWordChars == 1) { |
| <a class="jxr_linenumber" name="L135" href="#L135">135</a> <em class="jxr_comment">// We read 1 char followed by "===". But 6 bits is a truncated byte! Fail.</em> |
| <a class="jxr_linenumber" name="L136" href="#L136">136</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> byte[0]; |
| <a class="jxr_linenumber" name="L137" href="#L137">137</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (lastWordChars == 2) { |
| <a class="jxr_linenumber" name="L138" href="#L138">138</a> <em class="jxr_comment">// We read 2 chars followed by "==". Emit 1 byte with 8 of those 12 bits.</em> |
| <a class="jxr_linenumber" name="L139" href="#L139">139</a> word = word << 12; |
| <a class="jxr_linenumber" name="L140" href="#L140">140</a> out[outCount++] = (byte) (word >> 16); |
| <a class="jxr_linenumber" name="L141" href="#L141">141</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (lastWordChars == 3) { |
| <a class="jxr_linenumber" name="L142" href="#L142">142</a> <em class="jxr_comment">// We read 3 chars, followed by "=". Emit 2 bytes for 16 of those 18 bits.</em> |
| <a class="jxr_linenumber" name="L143" href="#L143">143</a> word = word << 6; |
| <a class="jxr_linenumber" name="L144" href="#L144">144</a> out[outCount++] = (byte) (word >> 16); |
| <a class="jxr_linenumber" name="L145" href="#L145">145</a> out[outCount++] = (byte) (word >> 8); |
| <a class="jxr_linenumber" name="L146" href="#L146">146</a> } |
| <a class="jxr_linenumber" name="L147" href="#L147">147</a> |
| <a class="jxr_linenumber" name="L148" href="#L148">148</a> <em class="jxr_comment">// If we sized our out array perfectly, we're done.</em> |
| <a class="jxr_linenumber" name="L149" href="#L149">149</a> <strong class="jxr_keyword">if</strong> (outCount == out.length) { |
| <a class="jxr_linenumber" name="L150" href="#L150">150</a> <strong class="jxr_keyword">return</strong> out; |
| <a class="jxr_linenumber" name="L151" href="#L151">151</a> } |
| <a class="jxr_linenumber" name="L152" href="#L152">152</a> |
| <a class="jxr_linenumber" name="L153" href="#L153">153</a> <em class="jxr_comment">// Copy the decoded bytes to a new, right-sized array.</em> |
| <a class="jxr_linenumber" name="L154" href="#L154">154</a> <strong class="jxr_keyword">final</strong> byte[] prefix = <strong class="jxr_keyword">new</strong> byte[outCount]; |
| <a class="jxr_linenumber" name="L155" href="#L155">155</a> System.arraycopy(out, 0, prefix, 0, outCount); |
| <a class="jxr_linenumber" name="L156" href="#L156">156</a> <strong class="jxr_keyword">return</strong> prefix; |
| <a class="jxr_linenumber" name="L157" href="#L157">157</a> } |
| <a class="jxr_linenumber" name="L158" href="#L158">158</a> |
| <a class="jxr_linenumber" name="L159" href="#L159">159</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> byte[] encode(<strong class="jxr_keyword">final</strong> byte[] in, <strong class="jxr_keyword">final</strong> byte[] map) { |
| <a class="jxr_linenumber" name="L160" href="#L160">160</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> length = 4 * (in.length / 3) + (in.length % 3 == 0 ? 0 : in.length % 3 + 1); |
| <a class="jxr_linenumber" name="L161" href="#L161">161</a> <strong class="jxr_keyword">final</strong> byte[] out = <strong class="jxr_keyword">new</strong> byte[length]; |
| <a class="jxr_linenumber" name="L162" href="#L162">162</a> <strong class="jxr_keyword">int</strong> index = 0; |
| <a class="jxr_linenumber" name="L163" href="#L163">163</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> end = in.length - in.length % 3; |
| <a class="jxr_linenumber" name="L164" href="#L164">164</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i < end; i += 3) { |
| <a class="jxr_linenumber" name="L165" href="#L165">165</a> out[index++] = map[(in[i] & 0xff) >> 2]; |
| <a class="jxr_linenumber" name="L166" href="#L166">166</a> out[index++] = map[((in[i] & 0x03) << 4) | ((in[i + 1] & 0xff) >> 4)]; |
| <a class="jxr_linenumber" name="L167" href="#L167">167</a> out[index++] = map[((in[i + 1] & 0x0f) << 2) | ((in[i + 2] & 0xff) >> 6)]; |
| <a class="jxr_linenumber" name="L168" href="#L168">168</a> out[index++] = map[(in[i + 2] & 0x3f)]; |
| <a class="jxr_linenumber" name="L169" href="#L169">169</a> } |
| <a class="jxr_linenumber" name="L170" href="#L170">170</a> <strong class="jxr_keyword">switch</strong> (in.length % 3) { |
| <a class="jxr_linenumber" name="L171" href="#L171">171</a> <strong class="jxr_keyword">case</strong> 1: |
| <a class="jxr_linenumber" name="L172" href="#L172">172</a> out[index++] = map[(in[end] & 0xff) >> 2]; |
| <a class="jxr_linenumber" name="L173" href="#L173">173</a> out[index] = map[(in[end] & 0x03) << 4]; |
| <a class="jxr_linenumber" name="L174" href="#L174">174</a> <strong class="jxr_keyword">break</strong>; |
| <a class="jxr_linenumber" name="L175" href="#L175">175</a> <strong class="jxr_keyword">case</strong> 2: |
| <a class="jxr_linenumber" name="L176" href="#L176">176</a> out[index++] = map[(in[end] & 0xff) >> 2]; |
| <a class="jxr_linenumber" name="L177" href="#L177">177</a> out[index++] = map[((in[end] & 0x03) << 4) | ((in[end + 1] & 0xff) >> 4)]; |
| <a class="jxr_linenumber" name="L178" href="#L178">178</a> out[index] = map[((in[end + 1] & 0x0f) << 2)]; |
| <a class="jxr_linenumber" name="L179" href="#L179">179</a> <strong class="jxr_keyword">break</strong>; |
| <a class="jxr_linenumber" name="L180" href="#L180">180</a> <strong class="jxr_keyword">default</strong>: |
| <a class="jxr_linenumber" name="L181" href="#L181">181</a> } |
| <a class="jxr_linenumber" name="L182" href="#L182">182</a> <strong class="jxr_keyword">return</strong> out; |
| <a class="jxr_linenumber" name="L183" href="#L183">183</a> } |
| <a class="jxr_linenumber" name="L184" href="#L184">184</a> } |
| <a class="jxr_linenumber" name="L185" href="#L185">185</a> } |
| </pre> |
| <hr/> |
| <div id="footer">Copyright © 2004–2024 <a href="https://www.apache.org/">The Apache Software Foundation</a>. All rights reserved.</div> |
| </body> |
| </html> |
