| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <html lang="en"> |
| <head> |
| <title>Source code</title> |
| <link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style"> |
| </head> |
| <body> |
| <div class="sourceContainer"> |
| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing,<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * software distributed under the License is distributed on an<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * KIND, either express or implied. See the License for the<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * specific language governing permissions and limitations<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * under the License.<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> *<a name="line.18"></a> |
| <span class="sourceLineNo">019</span> */<a name="line.19"></a> |
| <span class="sourceLineNo">020</span>package org.apache.mina.proxy.utils;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.io.UnsupportedEncodingException;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span><a name="line.23"></a> |
| <span class="sourceLineNo">024</span>/**<a name="line.24"></a> |
| <span class="sourceLineNo">025</span> * ByteUtilities.java - Byte manipulation functions.<a name="line.25"></a> |
| <span class="sourceLineNo">026</span> * <a name="line.26"></a> |
| <span class="sourceLineNo">027</span> * @author <a href="http://mina.apache.org">Apache MINA Project</a><a name="line.27"></a> |
| <span class="sourceLineNo">028</span> * @since MINA 2.0.0-M3<a name="line.28"></a> |
| <span class="sourceLineNo">029</span> */<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>public class ByteUtilities {<a name="line.30"></a> |
| <span class="sourceLineNo">031</span><a name="line.31"></a> |
| <span class="sourceLineNo">032</span> /**<a name="line.32"></a> |
| <span class="sourceLineNo">033</span> * Returns the integer represented by up to 4 bytes in network byte order.<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> * <a name="line.34"></a> |
| <span class="sourceLineNo">035</span> * @param buf the buffer to read the bytes from<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> * @param start<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> * @param count<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * @return the integer value <a name="line.38"></a> |
| <span class="sourceLineNo">039</span> */<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> public static int networkByteOrderToInt(byte[] buf, int start, int count) {<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> if (count > 4) {<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> throw new IllegalArgumentException("Cannot handle more than 4 bytes");<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> }<a name="line.43"></a> |
| <span class="sourceLineNo">044</span><a name="line.44"></a> |
| <span class="sourceLineNo">045</span> int result = 0;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span><a name="line.46"></a> |
| <span class="sourceLineNo">047</span> for (int i = 0; i < count; i++) {<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> result <<= 8;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> result |= (buf[start + i] & 0xff);<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> }<a name="line.50"></a> |
| <span class="sourceLineNo">051</span><a name="line.51"></a> |
| <span class="sourceLineNo">052</span> return result;<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> }<a name="line.53"></a> |
| <span class="sourceLineNo">054</span><a name="line.54"></a> |
| <span class="sourceLineNo">055</span> /**<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * Encodes an integer into up to 4 bytes in network byte order.<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * <a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * @param num the int to convert to a byte array<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * @param count the number of reserved bytes for the write operation<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * @return the resulting byte array<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> */<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> public static byte[] intToNetworkByteOrder(int num, int count) {<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> byte[] buf = new byte[count];<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> intToNetworkByteOrder(num, buf, 0, count);<a name="line.64"></a> |
| <span class="sourceLineNo">065</span><a name="line.65"></a> |
| <span class="sourceLineNo">066</span> return buf;<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> }<a name="line.67"></a> |
| <span class="sourceLineNo">068</span><a name="line.68"></a> |
| <span class="sourceLineNo">069</span> /**<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> * Encodes an integer into up to 4 bytes in network byte order in the <a name="line.70"></a> |
| <span class="sourceLineNo">071</span> * supplied buffer starting at <code>start</code> offset and writing<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> * <code>count</code> bytes.<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * <a name="line.73"></a> |
| <span class="sourceLineNo">074</span> * @param num the int to convert to a byte array<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> * @param buf the buffer to write the bytes to<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> * @param start the offset from beginning for the write operation<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> * @param count the number of reserved bytes for the write operation<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> */<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> public static void intToNetworkByteOrder(int num, byte[] buf, int start, int count) {<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> if (count > 4) {<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> throw new IllegalArgumentException("Cannot handle more than 4 bytes");<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> }<a name="line.82"></a> |
| <span class="sourceLineNo">083</span><a name="line.83"></a> |
| <span class="sourceLineNo">084</span> for (int i = count - 1; i >= 0; i--) {<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> buf[start + i] = (byte) (num & 0xff);<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> num >>>= 8;<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> }<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> }<a name="line.88"></a> |
| <span class="sourceLineNo">089</span><a name="line.89"></a> |
| <span class="sourceLineNo">090</span> /**<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> * Write a 16 bit short as LITTLE_ENDIAN.<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> * <a name="line.92"></a> |
| <span class="sourceLineNo">093</span> * @param v the short to write<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> */<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> public final static byte[] writeShort(short v) {<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> return writeShort(v, new byte[2], 0);<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> }<a name="line.97"></a> |
| <span class="sourceLineNo">098</span><a name="line.98"></a> |
| <span class="sourceLineNo">099</span> /**<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> * Write a 16 bit short as LITTLE_ENDIAN to<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> * the given array <code>b</code> at offset <code>offset</code>.<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> * <a name="line.102"></a> |
| <span class="sourceLineNo">103</span> * @param v the short to write<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> * @param b the byte array to write to<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> * @param offset the offset at which to start writing in the array<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> */<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> public final static byte[] writeShort(short v, byte[] b, int offset) {<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> b[offset] = (byte) v;<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> b[offset + 1] = (byte) (v >> 8);<a name="line.109"></a> |
| <span class="sourceLineNo">110</span><a name="line.110"></a> |
| <span class="sourceLineNo">111</span> return b;<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> }<a name="line.112"></a> |
| <span class="sourceLineNo">113</span><a name="line.113"></a> |
| <span class="sourceLineNo">114</span> /**<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> * Write a 32 bit int as LITTLE_ENDIAN.<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> * <a name="line.116"></a> |
| <span class="sourceLineNo">117</span> * @param v the int to write<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> */<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> public final static byte[] writeInt(int v) {<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> return writeInt(v, new byte[4], 0);<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> }<a name="line.121"></a> |
| <span class="sourceLineNo">122</span><a name="line.122"></a> |
| <span class="sourceLineNo">123</span> /**<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> * Write a 32 bit int as LITTLE_ENDIAN to<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> * the given array <code>b</code> at offset <code>offset</code>.<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> * <a name="line.126"></a> |
| <span class="sourceLineNo">127</span> * @param v the int to write<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> * @param b the byte array to write to<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> * @param offset the offset at which to start writing in the array<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> */<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> public final static byte[] writeInt(int v, byte[] b, int offset) {<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> b[offset] = (byte) v;<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> b[offset + 1] = (byte) (v >> 8);<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> b[offset + 2] = (byte) (v >> 16);<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> b[offset + 3] = (byte) (v >> 24);<a name="line.135"></a> |
| <span class="sourceLineNo">136</span><a name="line.136"></a> |
| <span class="sourceLineNo">137</span> return b;<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> }<a name="line.138"></a> |
| <span class="sourceLineNo">139</span><a name="line.139"></a> |
| <span class="sourceLineNo">140</span> /**<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> * Invert the endianness of words (4 bytes) in the given byte array <a name="line.141"></a> |
| <span class="sourceLineNo">142</span> * starting at the given offset and repeating length/4 times.<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> * eg: b0b1b2b3 -&gt; b3b2b1b0 <a name="line.143"></a> |
| <span class="sourceLineNo">144</span> * <a name="line.144"></a> |
| <span class="sourceLineNo">145</span> * @param b the byte array <a name="line.145"></a> |
| <span class="sourceLineNo">146</span> * @param offset the offset at which to change word start<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> * @param length the number of bytes on which to operate <a name="line.147"></a> |
| <span class="sourceLineNo">148</span> * (should be a multiple of 4)<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> */<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> public final static void changeWordEndianess(byte[] b, int offset, int length) {<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> byte tmp;<a name="line.151"></a> |
| <span class="sourceLineNo">152</span><a name="line.152"></a> |
| <span class="sourceLineNo">153</span> for (int i = offset; i < offset + length; i += 4) {<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> tmp = b[i];<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> b[i] = b[i + 3];<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> b[i + 3] = tmp;<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> tmp = b[i + 1];<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> b[i + 1] = b[i + 2];<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> b[i + 2] = tmp;<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> }<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> }<a name="line.161"></a> |
| <span class="sourceLineNo">162</span><a name="line.162"></a> |
| <span class="sourceLineNo">163</span> /**<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> * Invert two bytes in the given byte array starting at the given <a name="line.164"></a> |
| <span class="sourceLineNo">165</span> * offset and repeating the inversion length/2 times.<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> * eg: b0b1 -@gt; b1b0<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> * <a name="line.167"></a> |
| <span class="sourceLineNo">168</span> * @param b the byte array <a name="line.168"></a> |
| <span class="sourceLineNo">169</span> * @param offset the offset at which to change word start<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> * @param length the number of bytes on which to operate <a name="line.170"></a> |
| <span class="sourceLineNo">171</span> * (should be a multiple of 2)<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> */<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> public final static void changeByteEndianess(byte[] b, int offset, int length) {<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> byte tmp;<a name="line.174"></a> |
| <span class="sourceLineNo">175</span><a name="line.175"></a> |
| <span class="sourceLineNo">176</span> for (int i = offset; i < offset + length; i += 2) {<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> tmp = b[i];<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> b[i] = b[i + 1];<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> b[i + 1] = tmp;<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> }<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> }<a name="line.181"></a> |
| <span class="sourceLineNo">182</span><a name="line.182"></a> |
| <span class="sourceLineNo">183</span> /**<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> * Converts an OEM string as defined in NTLM protocol (eg ASCII charset)<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> * to a byte array.<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> * <a name="line.186"></a> |
| <span class="sourceLineNo">187</span> * @param s the string to convert<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> * @return the result byte array<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> * @throws UnsupportedEncodingException if the string is not an OEM string<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> */<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> public final static byte[] getOEMStringAsByteArray(String s) throws UnsupportedEncodingException {<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> return s.getBytes("ASCII");<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> }<a name="line.193"></a> |
| <span class="sourceLineNo">194</span><a name="line.194"></a> |
| <span class="sourceLineNo">195</span> /**<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> * Converts an UTF-16LE string as defined in NTLM protocol to a byte array.<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> * <a name="line.197"></a> |
| <span class="sourceLineNo">198</span> * @param s the string to convert<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> * @return the result byte array<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> * @throws UnsupportedEncodingException if the string is not an UTF-16LE string<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> */<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> public final static byte[] getUTFStringAsByteArray(String s) throws UnsupportedEncodingException {<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> return s.getBytes("UTF-16LE");<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> }<a name="line.204"></a> |
| <span class="sourceLineNo">205</span><a name="line.205"></a> |
| <span class="sourceLineNo">206</span> /**<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> * Encodes the string to a byte array using UTF-16LE or the ASCII charset<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> * in function of the <code>useUnicode</code> argument.<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> * <a name="line.209"></a> |
| <span class="sourceLineNo">210</span> * @param s the string to encode<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> * @param useUnicode if true then string is encoded to UTF-16LE <a name="line.211"></a> |
| <span class="sourceLineNo">212</span> * otherwise to ASCII<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> * @return the encoded string as a byte array<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> * @throws UnsupportedEncodingException if encoding fails<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> */<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> public final static byte[] encodeString(String s, boolean useUnicode) throws UnsupportedEncodingException {<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> if (useUnicode) {<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> return getUTFStringAsByteArray(s);<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> }<a name="line.219"></a> |
| <span class="sourceLineNo">220</span><a name="line.220"></a> |
| <span class="sourceLineNo">221</span> return getOEMStringAsByteArray(s);<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> }<a name="line.222"></a> |
| <span class="sourceLineNo">223</span><a name="line.223"></a> |
| <span class="sourceLineNo">224</span> /**<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> * Returns a hexadecimal representation of the given byte array.<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> * <a name="line.226"></a> |
| <span class="sourceLineNo">227</span> * @param bytes the array to output to an hex string<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> * @return the hex representation as a string<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> */<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> public static String asHex(byte[] bytes) {<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> return asHex(bytes, null);<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> }<a name="line.232"></a> |
| <span class="sourceLineNo">233</span><a name="line.233"></a> |
| <span class="sourceLineNo">234</span> /**<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> * Returns a hexadecimal representation of the given byte array.<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> * <a name="line.236"></a> |
| <span class="sourceLineNo">237</span> * @param bytes the array to output to an hex string<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> * @param separator the separator to use between each byte in the output<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> * string. If null no char is inserted between each byte value. <a name="line.239"></a> |
| <span class="sourceLineNo">240</span> * @return the hex representation as a string<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> */<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> public static String asHex(byte[] bytes, String separator) {<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> StringBuilder sb = new StringBuilder();<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> for (int i = 0; i < bytes.length; i++) {<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> String code = Integer.toHexString(bytes[i] & 0xFF);<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> if ((bytes[i] & 0xFF) < 16) {<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> sb.append('0');<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> }<a name="line.248"></a> |
| <span class="sourceLineNo">249</span><a name="line.249"></a> |
| <span class="sourceLineNo">250</span> sb.append(code);<a name="line.250"></a> |
| <span class="sourceLineNo">251</span><a name="line.251"></a> |
| <span class="sourceLineNo">252</span> if (separator != null && i < bytes.length - 1) {<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> sb.append(separator);<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> }<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> }<a name="line.255"></a> |
| <span class="sourceLineNo">256</span><a name="line.256"></a> |
| <span class="sourceLineNo">257</span> return sb.toString();<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> }<a name="line.258"></a> |
| <span class="sourceLineNo">259</span><a name="line.259"></a> |
| <span class="sourceLineNo">260</span> /**<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> * Converts a hex string representation to a byte array.<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> * <a name="line.262"></a> |
| <span class="sourceLineNo">263</span> * @param hex the string holding the hex values<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> * @return the resulting byte array<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> */<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> public static byte[] asByteArray(String hex) {<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> byte[] bts = new byte[hex.length() / 2];<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> for (int i = 0; i < bts.length; i++) {<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> bts[i] = (byte) Integer.parseInt(hex.substring(2 * i, 2 * i + 2), 16);<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> }<a name="line.270"></a> |
| <span class="sourceLineNo">271</span><a name="line.271"></a> |
| <span class="sourceLineNo">272</span> return bts;<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> }<a name="line.273"></a> |
| <span class="sourceLineNo">274</span><a name="line.274"></a> |
| <span class="sourceLineNo">275</span> /**<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> * Reads an int from 4 bytes of the given array at offset 0.<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> * <a name="line.277"></a> |
| <span class="sourceLineNo">278</span> * @param b the byte array to read<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> * @return the integer value<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> */<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> public static final int makeIntFromByte4(byte[] b) {<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> return makeIntFromByte4(b, 0);<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> }<a name="line.283"></a> |
| <span class="sourceLineNo">284</span><a name="line.284"></a> |
| <span class="sourceLineNo">285</span> /**<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> * Reads an int from 4 bytes of the given array at the given offset.<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> * <a name="line.287"></a> |
| <span class="sourceLineNo">288</span> * @param b the byte array to read<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> * @param offset the offset at which to start<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> * @return the int value<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> */<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> public static final int makeIntFromByte4(byte[] b, int offset) {<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> return b[offset] << 24 | (b[offset + 1] & 0xff) << 16 | (b[offset + 2] & 0xff) << 8 | (b[offset + 3] & 0xff);<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> }<a name="line.294"></a> |
| <span class="sourceLineNo">295</span><a name="line.295"></a> |
| <span class="sourceLineNo">296</span> /**<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> * Reads an int from 2 bytes of the given array at offset 0.<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> * <a name="line.298"></a> |
| <span class="sourceLineNo">299</span> * @param b the byte array to read<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> * @return the int value <a name="line.300"></a> |
| <span class="sourceLineNo">301</span> */<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> public static final int makeIntFromByte2(byte[] b) {<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> return makeIntFromByte2(b, 0);<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> }<a name="line.304"></a> |
| <span class="sourceLineNo">305</span><a name="line.305"></a> |
| <span class="sourceLineNo">306</span> /**<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> * Reads an int from 2 bytes of the given array at the given offset.<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> * <a name="line.308"></a> |
| <span class="sourceLineNo">309</span> * @param b the byte array to read<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> * @param offset the offset at which to start<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> * @return the int value<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> */<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> public static final int makeIntFromByte2(byte[] b, int offset) {<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> return (b[offset] & 0xff) << 8 | (b[offset + 1] & 0xff);<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> }<a name="line.315"></a> |
| <span class="sourceLineNo">316</span><a name="line.316"></a> |
| <span class="sourceLineNo">317</span> /**<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> * Returns true if the flag <code>testFlag</code> is set in the<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> * <code>flags</code> flagset.<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> * <a name="line.320"></a> |
| <span class="sourceLineNo">321</span> * @param flagSet the flagset to test<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> * @param testFlag the flag we search the presence of<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> * @return true if testFlag is present in the flagset, false otherwise.<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> */<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> public final static boolean isFlagSet(int flagSet, int testFlag) {<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> return (flagSet & testFlag) > 0;<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> }<a name="line.327"></a> |
| <span class="sourceLineNo">328</span>}<a name="line.328"></a> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| </pre> |
| </div> |
| </body> |
| </html> |
