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Jeremy Long
2015-11-29 07:44:14 -05:00
parent 191c5fae56
commit a426de69cd
1220 changed files with 51071 additions and 40455 deletions
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dependency-check-utils/xref/org/owasp/dependencycheck/utils/Checksum.html
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@@ -65,98 +65,91 @@
<a class="jxr_linenumber" name="L57" href="#L57">57</a> <em class="jxr_javadoccomment"> * @throws IOException when the file does not exist</em>
<a class="jxr_linenumber" name="L58" href="#L58">58</a> <em class="jxr_javadoccomment"> * @throws NoSuchAlgorithmException when an algorithm is specified that does not exist</em>
<a class="jxr_linenumber" name="L59" href="#L59">59</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L60" href="#L60">60</a> @SuppressWarnings(<span class="jxr_string">"empty-statement"</span>)
<a class="jxr_linenumber" name="L61" href="#L61">61</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> byte[] getChecksum(String algorithm, File file) <strong class="jxr_keyword">throws</strong> NoSuchAlgorithmException, IOException {
<a class="jxr_linenumber" name="L62" href="#L62">62</a> MessageDigest digest = MessageDigest.getInstance(algorithm);
<a class="jxr_linenumber" name="L63" href="#L63">63</a> FileInputStream fis = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="L64" href="#L64">64</a> <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="L65" href="#L65">65</a> fis = <strong class="jxr_keyword">new</strong> FileInputStream(file);
<a class="jxr_linenumber" name="L66" href="#L66">66</a> FileChannel ch = fis.getChannel();
<a class="jxr_linenumber" name="L67" href="#L67">67</a> <strong class="jxr_keyword">long</strong> remainingToRead = file.length();
<a class="jxr_linenumber" name="L68" href="#L68">68</a> <strong class="jxr_keyword">long</strong> start = 0;
<a class="jxr_linenumber" name="L69" href="#L69">69</a> <strong class="jxr_keyword">while</strong> (remainingToRead &gt; 0) {
<a class="jxr_linenumber" name="L70" href="#L70">70</a> <strong class="jxr_keyword">long</strong> amountToRead;
<a class="jxr_linenumber" name="L71" href="#L71">71</a> <strong class="jxr_keyword">if</strong> (remainingToRead &gt; Integer.MAX_VALUE) {
<a class="jxr_linenumber" name="L72" href="#L72">72</a> remainingToRead -= Integer.MAX_VALUE;
<a class="jxr_linenumber" name="L73" href="#L73">73</a> amountToRead = Integer.MAX_VALUE;
<a class="jxr_linenumber" name="L74" href="#L74">74</a> } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="L75" href="#L75">75</a> amountToRead = remainingToRead;
<a class="jxr_linenumber" name="L76" href="#L76">76</a> remainingToRead = 0;
<a class="jxr_linenumber" name="L77" href="#L77">77</a> }
<a class="jxr_linenumber" name="L78" href="#L78">78</a> MappedByteBuffer byteBuffer = ch.map(FileChannel.MapMode.READ_ONLY, start, amountToRead);
<a class="jxr_linenumber" name="L79" href="#L79">79</a> digest.update(byteBuffer);
<a class="jxr_linenumber" name="L80" href="#L80">80</a> start += amountToRead;
<a class="jxr_linenumber" name="L81" href="#L81">81</a> }
<a class="jxr_linenumber" name="L82" href="#L82">82</a>
<a class="jxr_linenumber" name="L83" href="#L83">83</a> <em class="jxr_comment">// BufferedInputStream bis = new BufferedInputStream(fis);</em>
<a class="jxr_linenumber" name="L84" href="#L84">84</a> <em class="jxr_comment">// DigestInputStream dis = new DigestInputStream(bis, digest);</em>
<a class="jxr_linenumber" name="L85" href="#L85">85</a> <em class="jxr_comment">// //yes, we are reading in a buffer for performance reasons - 1 byte at a time is SLOW</em>
<a class="jxr_linenumber" name="L86" href="#L86">86</a> <em class="jxr_comment">// byte[] buffer = new byte[8192];</em>
<a class="jxr_linenumber" name="L87" href="#L87">87</a> <em class="jxr_comment">// while (dis.read(buffer) != -1);</em>
<a class="jxr_linenumber" name="L88" href="#L88">88</a> } <strong class="jxr_keyword">finally</strong> {
<a class="jxr_linenumber" name="L89" href="#L89">89</a> <strong class="jxr_keyword">if</strong> (fis != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="L90" href="#L90">90</a> <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="L91" href="#L91">91</a> fis.close();
<a class="jxr_linenumber" name="L92" href="#L92">92</a> } <strong class="jxr_keyword">catch</strong> (IOException ex) {
<a class="jxr_linenumber" name="L93" href="#L93">93</a> LOGGER.trace(<span class="jxr_string">"Error closing file '{}'."</span>, file.getName(), ex);
<a class="jxr_linenumber" name="L94" href="#L94">94</a> }
<a class="jxr_linenumber" name="L95" href="#L95">95</a> }
<a class="jxr_linenumber" name="L96" href="#L96">96</a> }
<a class="jxr_linenumber" name="L97" href="#L97">97</a> <strong class="jxr_keyword">return</strong> digest.digest();
<a class="jxr_linenumber" name="L98" href="#L98">98</a> }
<a class="jxr_linenumber" name="L99" href="#L99">99</a>
<a class="jxr_linenumber" name="L100" href="#L100">100</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L101" href="#L101">101</a> <em class="jxr_javadoccomment"> * Calculates the MD5 checksum of a specified file.</em>
<a class="jxr_linenumber" name="L102" href="#L102">102</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="L103" href="#L103">103</a> <em class="jxr_javadoccomment"> * @param file the file to generate the MD5 checksum</em>
<a class="jxr_linenumber" name="L104" href="#L104">104</a> <em class="jxr_javadoccomment"> * @return the hex representation of the MD5 hash</em>
<a class="jxr_linenumber" name="L105" href="#L105">105</a> <em class="jxr_javadoccomment"> * @throws IOException when the file passed in does not exist</em>
<a class="jxr_linenumber" name="L106" href="#L106">106</a> <em class="jxr_javadoccomment"> * @throws NoSuchAlgorithmException when the MD5 algorithm is not available</em>
<a class="jxr_linenumber" name="L107" href="#L107">107</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L108" href="#L108">108</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String getMD5Checksum(File file) <strong class="jxr_keyword">throws</strong> IOException, NoSuchAlgorithmException {
<a class="jxr_linenumber" name="L109" href="#L109">109</a> byte[] b = getChecksum(<span class="jxr_string">"MD5"</span>, file);
<a class="jxr_linenumber" name="L110" href="#L110">110</a> <strong class="jxr_keyword">return</strong> getHex(b);
<a class="jxr_linenumber" name="L111" href="#L111">111</a> }
<a class="jxr_linenumber" name="L112" href="#L112">112</a>
<a class="jxr_linenumber" name="L113" href="#L113">113</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L114" href="#L114">114</a> <em class="jxr_javadoccomment"> * Calculates the SHA1 checksum of a specified file.</em>
<a class="jxr_linenumber" name="L115" href="#L115">115</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="L116" href="#L116">116</a> <em class="jxr_javadoccomment"> * @param file the file to generate the MD5 checksum</em>
<a class="jxr_linenumber" name="L117" href="#L117">117</a> <em class="jxr_javadoccomment"> * @return the hex representation of the SHA1 hash</em>
<a class="jxr_linenumber" name="L118" href="#L118">118</a> <em class="jxr_javadoccomment"> * @throws IOException when the file passed in does not exist</em>
<a class="jxr_linenumber" name="L119" href="#L119">119</a> <em class="jxr_javadoccomment"> * @throws NoSuchAlgorithmException when the SHA1 algorithm is not available</em>
<a class="jxr_linenumber" name="L60" href="#L60">60</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> byte[] getChecksum(String algorithm, File file) <strong class="jxr_keyword">throws</strong> NoSuchAlgorithmException, IOException {
<a class="jxr_linenumber" name="L61" href="#L61">61</a> MessageDigest digest = MessageDigest.getInstance(algorithm);
<a class="jxr_linenumber" name="L62" href="#L62">62</a> FileInputStream fis = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="L63" href="#L63">63</a> <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="L64" href="#L64">64</a> fis = <strong class="jxr_keyword">new</strong> FileInputStream(file);
<a class="jxr_linenumber" name="L65" href="#L65">65</a> FileChannel ch = fis.getChannel();
<a class="jxr_linenumber" name="L66" href="#L66">66</a> <strong class="jxr_keyword">long</strong> remainingToRead = file.length();
<a class="jxr_linenumber" name="L67" href="#L67">67</a> <strong class="jxr_keyword">long</strong> start = 0;
<a class="jxr_linenumber" name="L68" href="#L68">68</a> <strong class="jxr_keyword">while</strong> (remainingToRead &gt; 0) {
<a class="jxr_linenumber" name="L69" href="#L69">69</a> <strong class="jxr_keyword">long</strong> amountToRead;
<a class="jxr_linenumber" name="L70" href="#L70">70</a> <strong class="jxr_keyword">if</strong> (remainingToRead &gt; Integer.MAX_VALUE) {
<a class="jxr_linenumber" name="L71" href="#L71">71</a> remainingToRead -= Integer.MAX_VALUE;
<a class="jxr_linenumber" name="L72" href="#L72">72</a> amountToRead = Integer.MAX_VALUE;
<a class="jxr_linenumber" name="L73" href="#L73">73</a> } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="L74" href="#L74">74</a> amountToRead = remainingToRead;
<a class="jxr_linenumber" name="L75" href="#L75">75</a> remainingToRead = 0;
<a class="jxr_linenumber" name="L76" href="#L76">76</a> }
<a class="jxr_linenumber" name="L77" href="#L77">77</a> MappedByteBuffer byteBuffer = ch.map(FileChannel.MapMode.READ_ONLY, start, amountToRead);
<a class="jxr_linenumber" name="L78" href="#L78">78</a> digest.update(byteBuffer);
<a class="jxr_linenumber" name="L79" href="#L79">79</a> start += amountToRead;
<a class="jxr_linenumber" name="L80" href="#L80">80</a> }
<a class="jxr_linenumber" name="L81" href="#L81">81</a> } <strong class="jxr_keyword">finally</strong> {
<a class="jxr_linenumber" name="L82" href="#L82">82</a> <strong class="jxr_keyword">if</strong> (fis != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="L83" href="#L83">83</a> <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="L84" href="#L84">84</a> fis.close();
<a class="jxr_linenumber" name="L85" href="#L85">85</a> } <strong class="jxr_keyword">catch</strong> (IOException ex) {
<a class="jxr_linenumber" name="L86" href="#L86">86</a> LOGGER.trace(<span class="jxr_string">"Error closing file '{}'."</span>, file.getName(), ex);
<a class="jxr_linenumber" name="L87" href="#L87">87</a> }
<a class="jxr_linenumber" name="L88" href="#L88">88</a> }
<a class="jxr_linenumber" name="L89" href="#L89">89</a> }
<a class="jxr_linenumber" name="L90" href="#L90">90</a> <strong class="jxr_keyword">return</strong> digest.digest();
<a class="jxr_linenumber" name="L91" href="#L91">91</a> }
<a class="jxr_linenumber" name="L92" href="#L92">92</a>
<a class="jxr_linenumber" name="L93" href="#L93">93</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L94" href="#L94">94</a> <em class="jxr_javadoccomment"> * Calculates the MD5 checksum of a specified file.</em>
<a class="jxr_linenumber" name="L95" href="#L95">95</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="L96" href="#L96">96</a> <em class="jxr_javadoccomment"> * @param file the file to generate the MD5 checksum</em>
<a class="jxr_linenumber" name="L97" href="#L97">97</a> <em class="jxr_javadoccomment"> * @return the hex representation of the MD5 hash</em>
<a class="jxr_linenumber" name="L98" href="#L98">98</a> <em class="jxr_javadoccomment"> * @throws IOException when the file passed in does not exist</em>
<a class="jxr_linenumber" name="L99" href="#L99">99</a> <em class="jxr_javadoccomment"> * @throws NoSuchAlgorithmException when the MD5 algorithm is not available</em>
<a class="jxr_linenumber" name="L100" href="#L100">100</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L101" href="#L101">101</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String getMD5Checksum(File file) <strong class="jxr_keyword">throws</strong> IOException, NoSuchAlgorithmException {
<a class="jxr_linenumber" name="L102" href="#L102">102</a> byte[] b = getChecksum(<span class="jxr_string">"MD5"</span>, file);
<a class="jxr_linenumber" name="L103" href="#L103">103</a> <strong class="jxr_keyword">return</strong> getHex(b);
<a class="jxr_linenumber" name="L104" href="#L104">104</a> }
<a class="jxr_linenumber" name="L105" href="#L105">105</a>
<a class="jxr_linenumber" name="L106" href="#L106">106</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L107" href="#L107">107</a> <em class="jxr_javadoccomment"> * Calculates the SHA1 checksum of a specified file.</em>
<a class="jxr_linenumber" name="L108" href="#L108">108</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="L109" href="#L109">109</a> <em class="jxr_javadoccomment"> * @param file the file to generate the MD5 checksum</em>
<a class="jxr_linenumber" name="L110" href="#L110">110</a> <em class="jxr_javadoccomment"> * @return the hex representation of the SHA1 hash</em>
<a class="jxr_linenumber" name="L111" href="#L111">111</a> <em class="jxr_javadoccomment"> * @throws IOException when the file passed in does not exist</em>
<a class="jxr_linenumber" name="L112" href="#L112">112</a> <em class="jxr_javadoccomment"> * @throws NoSuchAlgorithmException when the SHA1 algorithm is not available</em>
<a class="jxr_linenumber" name="L113" href="#L113">113</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L114" href="#L114">114</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String getSHA1Checksum(File file) <strong class="jxr_keyword">throws</strong> IOException, NoSuchAlgorithmException {
<a class="jxr_linenumber" name="L115" href="#L115">115</a> byte[] b = getChecksum(<span class="jxr_string">"SHA1"</span>, file);
<a class="jxr_linenumber" name="L116" href="#L116">116</a> <strong class="jxr_keyword">return</strong> getHex(b);
<a class="jxr_linenumber" name="L117" href="#L117">117</a> }
<a class="jxr_linenumber" name="L118" href="#L118">118</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L119" href="#L119">119</a> <em class="jxr_javadoccomment"> * Hex code characters used in getHex.</em>
<a class="jxr_linenumber" name="L120" href="#L120">120</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L121" href="#L121">121</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String getSHA1Checksum(File file) <strong class="jxr_keyword">throws</strong> IOException, NoSuchAlgorithmException {
<a class="jxr_linenumber" name="L122" href="#L122">122</a> byte[] b = getChecksum(<span class="jxr_string">"SHA1"</span>, file);
<a class="jxr_linenumber" name="L123" href="#L123">123</a> <strong class="jxr_keyword">return</strong> getHex(b);
<a class="jxr_linenumber" name="L124" href="#L124">124</a> }
<a class="jxr_linenumber" name="L125" href="#L125">125</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L126" href="#L126">126</a> <em class="jxr_javadoccomment"> * Hex code characters used in getHex.</em>
<a class="jxr_linenumber" name="L127" href="#L127">127</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L128" href="#L128">128</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String HEXES = <span class="jxr_string">"0123456789abcdef"</span>;
<a class="jxr_linenumber" name="L129" href="#L129">129</a>
<a class="jxr_linenumber" name="L130" href="#L130">130</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L131" href="#L131">131</a> <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
<a class="jxr_linenumber" name="L132" href="#L132">132</a> <em class="jxr_javadoccomment"> * Converts a byte array into a hex string.&lt;/p&gt;</em>
<a class="jxr_linenumber" name="L133" href="#L133">133</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="L134" href="#L134">134</a> <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
<a class="jxr_linenumber" name="L135" href="#L135">135</a> <em class="jxr_javadoccomment"> * This method was copied from &lt;a</em>
<a class="jxr_linenumber" name="L136" href="#L136">136</a> <em class="jxr_javadoccomment"> * href="<a href="http://www.rgagnon.com/javadetails/java-0596.html" target="alexandria_uri">http://www.rgagnon.com/javadetails/java-0596.html</a>"&gt;<a href="http://www.rgagnon.com/javadetails/java-0596.html" target="alexandria_uri">http://www.rgagnon.com/javadetails/java-0596.html</a>&lt;/a&gt;&lt;/p&gt;</em>
<a class="jxr_linenumber" name="L137" href="#L137">137</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="L138" href="#L138">138</a> <em class="jxr_javadoccomment"> * @param raw a byte array</em>
<a class="jxr_linenumber" name="L139" href="#L139">139</a> <em class="jxr_javadoccomment"> * @return the hex representation of the byte array</em>
<a class="jxr_linenumber" name="L140" href="#L140">140</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L141" href="#L141">141</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String getHex(byte[] raw) {
<a class="jxr_linenumber" name="L142" href="#L142">142</a> <strong class="jxr_keyword">if</strong> (raw == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="L143" href="#L143">143</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="L144" href="#L144">144</a> }
<a class="jxr_linenumber" name="L145" href="#L145">145</a> <strong class="jxr_keyword">final</strong> StringBuilder hex = <strong class="jxr_keyword">new</strong> StringBuilder(2 * raw.length);
<a class="jxr_linenumber" name="L146" href="#L146">146</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">final</strong> byte b : raw) {
<a class="jxr_linenumber" name="L147" href="#L147">147</a> hex.append(HEXES.charAt((b &amp; 0xF0) &gt;&gt; 4)).append(HEXES.charAt(b &amp; 0x0F));
<a class="jxr_linenumber" name="L148" href="#L148">148</a> }
<a class="jxr_linenumber" name="L149" href="#L149">149</a> <strong class="jxr_keyword">return</strong> hex.toString();
<a class="jxr_linenumber" name="L150" href="#L150">150</a> }
<a class="jxr_linenumber" name="L151" href="#L151">151</a> }
<a class="jxr_linenumber" name="L121" href="#L121">121</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> String HEXES = <span class="jxr_string">"0123456789abcdef"</span>;
<a class="jxr_linenumber" name="L122" href="#L122">122</a>
<a class="jxr_linenumber" name="L123" href="#L123">123</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L124" href="#L124">124</a> <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
<a class="jxr_linenumber" name="L125" href="#L125">125</a> <em class="jxr_javadoccomment"> * Converts a byte array into a hex string.&lt;/p&gt;</em>
<a class="jxr_linenumber" name="L126" href="#L126">126</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="L127" href="#L127">127</a> <em class="jxr_javadoccomment"> * &lt;p&gt;</em>
<a class="jxr_linenumber" name="L128" href="#L128">128</a> <em class="jxr_javadoccomment"> * This method was copied from &lt;a</em>
<a class="jxr_linenumber" name="L129" href="#L129">129</a> <em class="jxr_javadoccomment"> * href="<a href="http://www.rgagnon.com/javadetails/java-0596.html" target="alexandria_uri">http://www.rgagnon.com/javadetails/java-0596.html</a>"&gt;<a href="http://www.rgagnon.com/javadetails/java-0596.html" target="alexandria_uri">http://www.rgagnon.com/javadetails/java-0596.html</a>&lt;/a&gt;&lt;/p&gt;</em>
<a class="jxr_linenumber" name="L130" href="#L130">130</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="L131" href="#L131">131</a> <em class="jxr_javadoccomment"> * @param raw a byte array</em>
<a class="jxr_linenumber" name="L132" href="#L132">132</a> <em class="jxr_javadoccomment"> * @return the hex representation of the byte array</em>
<a class="jxr_linenumber" name="L133" href="#L133">133</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L134" href="#L134">134</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> String getHex(byte[] raw) {
<a class="jxr_linenumber" name="L135" href="#L135">135</a> <strong class="jxr_keyword">if</strong> (raw == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="L136" href="#L136">136</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="L137" href="#L137">137</a> }
<a class="jxr_linenumber" name="L138" href="#L138">138</a> <strong class="jxr_keyword">final</strong> StringBuilder hex = <strong class="jxr_keyword">new</strong> StringBuilder(2 * raw.length);
<a class="jxr_linenumber" name="L139" href="#L139">139</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">final</strong> byte b : raw) {
<a class="jxr_linenumber" name="L140" href="#L140">140</a> hex.append(HEXES.charAt((b &amp; 0xF0) &gt;&gt; 4)).append(HEXES.charAt(b &amp; 0x0F));
<a class="jxr_linenumber" name="L141" href="#L141">141</a> }
<a class="jxr_linenumber" name="L142" href="#L142">142</a> <strong class="jxr_keyword">return</strong> hex.toString();
<a class="jxr_linenumber" name="L143" href="#L143">143</a> }
<a class="jxr_linenumber" name="L144" href="#L144">144</a> }
</pre>
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