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| <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, software<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> */<a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.util;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.io.ByteArrayOutputStream;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.io.DataInput;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.io.DataInputStream;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.io.DataOutput;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.io.IOException;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.io.InputStream;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.io.OutputStream;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.math.BigDecimal;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.math.BigInteger;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.nio.ByteBuffer;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.util.Arrays;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.io.ByteBufferWriter;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.io.util.StreamUtils;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.nio.ByteBuff;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.unsafe.HBasePlatformDependent;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.io.IOUtils;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.io.WritableUtils;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span><a name="line.38"></a> |
| <span class="sourceLineNo">039</span>/**<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * Utility functions for working with byte buffers, such as reading/writing variable-length long<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * numbers.<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> */<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>@InterfaceAudience.Private<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>public final class ByteBufferUtils {<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> // "Compressed integer" serialization helper constants.<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> public final static int VALUE_MASK = 0x7f;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> public final static int NEXT_BIT_SHIFT = 7;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> public final static int NEXT_BIT_MASK = 1 << 7;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> final static boolean UNSAFE_AVAIL = HBasePlatformDependent.isUnsafeAvailable();<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> public final static boolean UNSAFE_UNALIGNED = HBasePlatformDependent.unaligned();<a name="line.50"></a> |
| <span class="sourceLineNo">051</span><a name="line.51"></a> |
| <span class="sourceLineNo">052</span> private ByteBufferUtils() {<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> static abstract class Comparer {<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> abstract int compareTo(byte[] buf1, int o1, int l1, ByteBuffer buf2, int o2, int l2);<a name="line.56"></a> |
| <span class="sourceLineNo">057</span><a name="line.57"></a> |
| <span class="sourceLineNo">058</span> abstract int compareTo(ByteBuffer buf1, int o1, int l1, ByteBuffer buf2, int o2, int l2);<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> }<a name="line.59"></a> |
| <span class="sourceLineNo">060</span><a name="line.60"></a> |
| <span class="sourceLineNo">061</span> static abstract class Converter {<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> abstract short toShort(ByteBuffer buffer, int offset);<a name="line.62"></a> |
| <span class="sourceLineNo">063</span><a name="line.63"></a> |
| <span class="sourceLineNo">064</span> abstract int toInt(ByteBuffer buffer);<a name="line.64"></a> |
| <span class="sourceLineNo">065</span><a name="line.65"></a> |
| <span class="sourceLineNo">066</span> abstract int toInt(ByteBuffer buffer, int offset);<a name="line.66"></a> |
| <span class="sourceLineNo">067</span><a name="line.67"></a> |
| <span class="sourceLineNo">068</span> abstract long toLong(ByteBuffer buffer, int offset);<a name="line.68"></a> |
| <span class="sourceLineNo">069</span><a name="line.69"></a> |
| <span class="sourceLineNo">070</span> abstract void putInt(ByteBuffer buffer, int val);<a name="line.70"></a> |
| <span class="sourceLineNo">071</span><a name="line.71"></a> |
| <span class="sourceLineNo">072</span> abstract int putInt(ByteBuffer buffer, int index, int val);<a name="line.72"></a> |
| <span class="sourceLineNo">073</span><a name="line.73"></a> |
| <span class="sourceLineNo">074</span> abstract void putShort(ByteBuffer buffer, short val);<a name="line.74"></a> |
| <span class="sourceLineNo">075</span><a name="line.75"></a> |
| <span class="sourceLineNo">076</span> abstract int putShort(ByteBuffer buffer, int index, short val);<a name="line.76"></a> |
| <span class="sourceLineNo">077</span><a name="line.77"></a> |
| <span class="sourceLineNo">078</span> abstract void putLong(ByteBuffer buffer, long val);<a name="line.78"></a> |
| <span class="sourceLineNo">079</span><a name="line.79"></a> |
| <span class="sourceLineNo">080</span> abstract int putLong(ByteBuffer buffer, int index, long val);<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> }<a name="line.81"></a> |
| <span class="sourceLineNo">082</span><a name="line.82"></a> |
| <span class="sourceLineNo">083</span> static abstract class CommonPrefixer {<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> abstract int findCommonPrefix(ByteBuffer left, int leftOffset, int leftLength, byte[] right,<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> int rightOffset, int rightLength);<a name="line.85"></a> |
| <span class="sourceLineNo">086</span><a name="line.86"></a> |
| <span class="sourceLineNo">087</span> abstract int findCommonPrefix(ByteBuffer left, int leftOffset, int leftLength, ByteBuffer right,<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> int rightOffset, int rightLength);<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> static class ComparerHolder {<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> static final String UNSAFE_COMPARER_NAME = ComparerHolder.class.getName() + "$UnsafeComparer";<a name="line.92"></a> |
| <span class="sourceLineNo">093</span><a name="line.93"></a> |
| <span class="sourceLineNo">094</span> static final Comparer BEST_COMPARER = getBestComparer();<a name="line.94"></a> |
| <span class="sourceLineNo">095</span><a name="line.95"></a> |
| <span class="sourceLineNo">096</span> static Comparer getBestComparer() {<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> try {<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> Class<? extends Comparer> theClass =<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> Class.forName(UNSAFE_COMPARER_NAME).asSubclass(Comparer.class);<a name="line.99"></a> |
| <span class="sourceLineNo">100</span><a name="line.100"></a> |
| <span class="sourceLineNo">101</span> return theClass.getConstructor().newInstance();<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> } catch (Throwable t) { // ensure we really catch *everything*<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> return PureJavaComparer.INSTANCE;<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> }<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> }<a name="line.105"></a> |
| <span class="sourceLineNo">106</span><a name="line.106"></a> |
| <span class="sourceLineNo">107</span> static final class PureJavaComparer extends Comparer {<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> static final PureJavaComparer INSTANCE = new PureJavaComparer();<a name="line.108"></a> |
| <span class="sourceLineNo">109</span><a name="line.109"></a> |
| <span class="sourceLineNo">110</span> private PureJavaComparer() {<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> }<a name="line.111"></a> |
| <span class="sourceLineNo">112</span><a name="line.112"></a> |
| <span class="sourceLineNo">113</span> @Override<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> public int compareTo(byte[] buf1, int o1, int l1, ByteBuffer buf2, int o2, int l2) {<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> int end1 = o1 + l1;<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> int end2 = o2 + l2;<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> for (int i = o1, j = o2; i < end1 && j < end2; i++, j++) {<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> int a = buf1[i] & 0xFF;<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> int b = buf2.get(j) & 0xFF;<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> if (a != b) {<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> return a - b;<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> return l1 - l2;<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> }<a name="line.125"></a> |
| <span class="sourceLineNo">126</span><a name="line.126"></a> |
| <span class="sourceLineNo">127</span> @Override<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> public int compareTo(ByteBuffer buf1, int o1, int l1, ByteBuffer buf2, int o2, int l2) {<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> int end1 = o1 + l1;<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> int end2 = o2 + l2;<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> for (int i = o1, j = o2; i < end1 && j < end2; i++, j++) {<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> int a = buf1.get(i) & 0xFF;<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> int b = buf2.get(j) & 0xFF;<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> if (a != b) {<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> return a - b;<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> }<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> }<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> return l1 - l2;<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><a name="line.141"></a> |
| <span class="sourceLineNo">142</span> static final class UnsafeComparer extends Comparer {<a name="line.142"></a> |
| <span class="sourceLineNo">143</span><a name="line.143"></a> |
| <span class="sourceLineNo">144</span> public UnsafeComparer() {<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> }<a name="line.145"></a> |
| <span class="sourceLineNo">146</span><a name="line.146"></a> |
| <span class="sourceLineNo">147</span> static {<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> if (!UNSAFE_UNALIGNED) {<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> throw new Error();<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> }<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> }<a name="line.151"></a> |
| <span class="sourceLineNo">152</span><a name="line.152"></a> |
| <span class="sourceLineNo">153</span> @Override<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> public int compareTo(byte[] buf1, int o1, int l1, ByteBuffer buf2, int o2, int l2) {<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> long offset2Adj;<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> Object refObj2 = null;<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> if (buf2.isDirect()) {<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> offset2Adj = o2 + UnsafeAccess.directBufferAddress(buf2);<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> } else {<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> offset2Adj = o2 + buf2.arrayOffset() + UnsafeAccess.BYTE_ARRAY_BASE_OFFSET;<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> refObj2 = buf2.array();<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> }<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> return compareToUnsafe(buf1, o1 + UnsafeAccess.BYTE_ARRAY_BASE_OFFSET, l1, refObj2,<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> offset2Adj, l2);<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> }<a name="line.165"></a> |
| <span class="sourceLineNo">166</span><a name="line.166"></a> |
| <span class="sourceLineNo">167</span> @Override<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> public int compareTo(ByteBuffer buf1, int o1, int l1, ByteBuffer buf2, int o2, int l2) {<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> long offset1Adj, offset2Adj;<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> Object refObj1 = null, refObj2 = null;<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> if (buf1.isDirect()) {<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> offset1Adj = o1 + UnsafeAccess.directBufferAddress(buf1);<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> } else {<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> offset1Adj = o1 + buf1.arrayOffset() + UnsafeAccess.BYTE_ARRAY_BASE_OFFSET;<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> refObj1 = buf1.array();<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> }<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> if (buf2.isDirect()) {<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> offset2Adj = o2 + UnsafeAccess.directBufferAddress(buf2);<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> } else {<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> offset2Adj = o2 + buf2.arrayOffset() + UnsafeAccess.BYTE_ARRAY_BASE_OFFSET;<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> refObj2 = buf2.array();<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> }<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> return compareToUnsafe(refObj1, offset1Adj, l1, refObj2, offset2Adj, l2);<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> }<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> }<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> }<a name="line.186"></a> |
| <span class="sourceLineNo">187</span><a name="line.187"></a> |
| <span class="sourceLineNo">188</span> static class ConverterHolder {<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> static final String UNSAFE_CONVERTER_NAME =<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> ConverterHolder.class.getName() + "$UnsafeConverter";<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> static final Converter BEST_CONVERTER = getBestConverter();<a name="line.191"></a> |
| <span class="sourceLineNo">192</span><a name="line.192"></a> |
| <span class="sourceLineNo">193</span> static Converter getBestConverter() {<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> try {<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> Class<? extends Converter> theClass =<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> Class.forName(UNSAFE_CONVERTER_NAME).asSubclass(Converter.class);<a name="line.196"></a> |
| <span class="sourceLineNo">197</span><a name="line.197"></a> |
| <span class="sourceLineNo">198</span> // yes, UnsafeComparer does implement Comparer<byte[]><a name="line.198"></a> |
| <span class="sourceLineNo">199</span> return theClass.getConstructor().newInstance();<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> } catch (Throwable t) { // ensure we really catch *everything*<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> return PureJavaConverter.INSTANCE;<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> }<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> }<a name="line.203"></a> |
| <span class="sourceLineNo">204</span><a name="line.204"></a> |
| <span class="sourceLineNo">205</span> static final class PureJavaConverter extends Converter {<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> static final PureJavaConverter INSTANCE = new PureJavaConverter();<a name="line.206"></a> |
| <span class="sourceLineNo">207</span><a name="line.207"></a> |
| <span class="sourceLineNo">208</span> private PureJavaConverter() {<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> }<a name="line.209"></a> |
| <span class="sourceLineNo">210</span><a name="line.210"></a> |
| <span class="sourceLineNo">211</span> @Override<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> short toShort(ByteBuffer buffer, int offset) {<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> return buffer.getShort(offset);<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> }<a name="line.214"></a> |
| <span class="sourceLineNo">215</span><a name="line.215"></a> |
| <span class="sourceLineNo">216</span> @Override<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> int toInt(ByteBuffer buffer) {<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> return buffer.getInt();<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> @Override<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> int toInt(ByteBuffer buffer, int offset) {<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> return buffer.getInt(offset);<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> }<a name="line.224"></a> |
| <span class="sourceLineNo">225</span><a name="line.225"></a> |
| <span class="sourceLineNo">226</span> @Override<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> long toLong(ByteBuffer buffer, int offset) {<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> return buffer.getLong(offset);<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> }<a name="line.229"></a> |
| <span class="sourceLineNo">230</span><a name="line.230"></a> |
| <span class="sourceLineNo">231</span> @Override<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> void putInt(ByteBuffer buffer, int val) {<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> buffer.putInt(val);<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> }<a name="line.234"></a> |
| <span class="sourceLineNo">235</span><a name="line.235"></a> |
| <span class="sourceLineNo">236</span> @Override<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> int putInt(ByteBuffer buffer, int index, int val) {<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> buffer.putInt(index, val);<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> return index + Bytes.SIZEOF_INT;<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> }<a name="line.240"></a> |
| <span class="sourceLineNo">241</span><a name="line.241"></a> |
| <span class="sourceLineNo">242</span> @Override<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> void putShort(ByteBuffer buffer, short val) {<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> buffer.putShort(val);<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> }<a name="line.245"></a> |
| <span class="sourceLineNo">246</span><a name="line.246"></a> |
| <span class="sourceLineNo">247</span> @Override<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> int putShort(ByteBuffer buffer, int index, short val) {<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> buffer.putShort(index, val);<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> return index + Bytes.SIZEOF_SHORT;<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> }<a name="line.251"></a> |
| <span class="sourceLineNo">252</span><a name="line.252"></a> |
| <span class="sourceLineNo">253</span> @Override<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> void putLong(ByteBuffer buffer, long val) {<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> buffer.putLong(val);<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> }<a name="line.256"></a> |
| <span class="sourceLineNo">257</span><a name="line.257"></a> |
| <span class="sourceLineNo">258</span> @Override<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> int putLong(ByteBuffer buffer, int index, long val) {<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> buffer.putLong(index, val);<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> return index + Bytes.SIZEOF_LONG;<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> }<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> }<a name="line.263"></a> |
| <span class="sourceLineNo">264</span><a name="line.264"></a> |
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| <span class="sourceLineNo">266</span><a name="line.266"></a> |
| <span class="sourceLineNo">267</span> public UnsafeConverter() {<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> }<a name="line.268"></a> |
| <span class="sourceLineNo">269</span><a name="line.269"></a> |
| <span class="sourceLineNo">270</span> static {<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> if (!UNSAFE_UNALIGNED) {<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> throw new Error();<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> @Override<a name="line.276"></a> |
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| <span class="sourceLineNo">278</span> return UnsafeAccess.toShort(buffer, offset);<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> }<a name="line.279"></a> |
| <span class="sourceLineNo">280</span><a name="line.280"></a> |
| <span class="sourceLineNo">281</span> @Override<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> int toInt(ByteBuffer buffer) {<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> int i = UnsafeAccess.toInt(buffer, buffer.position());<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> buffer.position(buffer.position() + Bytes.SIZEOF_INT);<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> return i;<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> }<a name="line.286"></a> |
| <span class="sourceLineNo">287</span><a name="line.287"></a> |
| <span class="sourceLineNo">288</span> @Override<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> int toInt(ByteBuffer buffer, int offset) {<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> return UnsafeAccess.toInt(buffer, offset);<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> }<a name="line.291"></a> |
| <span class="sourceLineNo">292</span><a name="line.292"></a> |
| <span class="sourceLineNo">293</span> @Override<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> long toLong(ByteBuffer buffer, int offset) {<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> return UnsafeAccess.toLong(buffer, offset);<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> }<a name="line.296"></a> |
| <span class="sourceLineNo">297</span><a name="line.297"></a> |
| <span class="sourceLineNo">298</span> @Override<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> void putInt(ByteBuffer buffer, int val) {<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> int newPos = UnsafeAccess.putInt(buffer, buffer.position(), val);<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> buffer.position(newPos);<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> }<a name="line.302"></a> |
| <span class="sourceLineNo">303</span><a name="line.303"></a> |
| <span class="sourceLineNo">304</span> @Override<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> int putInt(ByteBuffer buffer, int index, int val) {<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> return UnsafeAccess.putInt(buffer, index, val);<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> }<a name="line.307"></a> |
| <span class="sourceLineNo">308</span><a name="line.308"></a> |
| <span class="sourceLineNo">309</span> @Override<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> void putShort(ByteBuffer buffer, short val) {<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> int newPos = UnsafeAccess.putShort(buffer, buffer.position(), val);<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> buffer.position(newPos);<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> }<a name="line.313"></a> |
| <span class="sourceLineNo">314</span><a name="line.314"></a> |
| <span class="sourceLineNo">315</span> @Override<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> int putShort(ByteBuffer buffer, int index, short val) {<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> return UnsafeAccess.putShort(buffer, index, val);<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> }<a name="line.318"></a> |
| <span class="sourceLineNo">319</span><a name="line.319"></a> |
| <span class="sourceLineNo">320</span> @Override<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> void putLong(ByteBuffer buffer, long val) {<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> int newPos = UnsafeAccess.putLong(buffer, buffer.position(), val);<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> buffer.position(newPos);<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> }<a name="line.324"></a> |
| <span class="sourceLineNo">325</span><a name="line.325"></a> |
| <span class="sourceLineNo">326</span> @Override<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> int putLong(ByteBuffer buffer, int index, long val) {<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> return UnsafeAccess.putLong(buffer, index, val);<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> }<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> }<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> }<a name="line.331"></a> |
| <span class="sourceLineNo">332</span><a name="line.332"></a> |
| <span class="sourceLineNo">333</span> static class CommonPrefixerHolder {<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> static final String UNSAFE_COMMON_PREFIXER_NAME =<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> CommonPrefixerHolder.class.getName() + "$UnsafeCommonPrefixer";<a name="line.335"></a> |
| <span class="sourceLineNo">336</span><a name="line.336"></a> |
| <span class="sourceLineNo">337</span> static final CommonPrefixer BEST_COMMON_PREFIXER = getBestCommonPrefixer();<a name="line.337"></a> |
| <span class="sourceLineNo">338</span><a name="line.338"></a> |
| <span class="sourceLineNo">339</span> static CommonPrefixer getBestCommonPrefixer() {<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> try {<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> Class<? extends CommonPrefixer> theClass =<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> Class.forName(UNSAFE_COMMON_PREFIXER_NAME).asSubclass(CommonPrefixer.class);<a name="line.342"></a> |
| <span class="sourceLineNo">343</span><a name="line.343"></a> |
| <span class="sourceLineNo">344</span> return theClass.getConstructor().newInstance();<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> } catch (Throwable t) { // ensure we really catch *everything*<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> return PureJavaCommonPrefixer.INSTANCE;<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> }<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> }<a name="line.348"></a> |
| <span class="sourceLineNo">349</span><a name="line.349"></a> |
| <span class="sourceLineNo">350</span> static final class PureJavaCommonPrefixer extends CommonPrefixer {<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> static final PureJavaCommonPrefixer INSTANCE = new PureJavaCommonPrefixer();<a name="line.351"></a> |
| <span class="sourceLineNo">352</span><a name="line.352"></a> |
| <span class="sourceLineNo">353</span> private PureJavaCommonPrefixer() {<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> }<a name="line.354"></a> |
| <span class="sourceLineNo">355</span><a name="line.355"></a> |
| <span class="sourceLineNo">356</span> @Override<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> public int findCommonPrefix(ByteBuffer left, int leftOffset, int leftLength, byte[] right,<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> int rightOffset, int rightLength) {<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> int length = Math.min(leftLength, rightLength);<a name="line.359"></a> |
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| <span class="sourceLineNo">361</span><a name="line.361"></a> |
| <span class="sourceLineNo">362</span> while (<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> result < length<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> && ByteBufferUtils.toByte(left, leftOffset + result) == right[rightOffset + result]<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> ) {<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> result++;<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> }<a name="line.367"></a> |
| <span class="sourceLineNo">368</span><a name="line.368"></a> |
| <span class="sourceLineNo">369</span> return result;<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> }<a name="line.370"></a> |
| <span class="sourceLineNo">371</span><a name="line.371"></a> |
| <span class="sourceLineNo">372</span> @Override<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> int findCommonPrefix(ByteBuffer left, int leftOffset, int leftLength, ByteBuffer right,<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> int rightOffset, int rightLength) {<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> int length = Math.min(leftLength, rightLength);<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> int result = 0;<a name="line.376"></a> |
| <span class="sourceLineNo">377</span><a name="line.377"></a> |
| <span class="sourceLineNo">378</span> while (<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> result < length && ByteBufferUtils.toByte(left, leftOffset + result)<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> == ByteBufferUtils.toByte(right, rightOffset + result)<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> ) {<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> result++;<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> }<a name="line.383"></a> |
| <span class="sourceLineNo">384</span><a name="line.384"></a> |
| <span class="sourceLineNo">385</span> return result;<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> }<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> }<a name="line.387"></a> |
| <span class="sourceLineNo">388</span><a name="line.388"></a> |
| <span class="sourceLineNo">389</span> static final class UnsafeCommonPrefixer extends CommonPrefixer {<a name="line.389"></a> |
| <span class="sourceLineNo">390</span><a name="line.390"></a> |
| <span class="sourceLineNo">391</span> static {<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> if (!UNSAFE_UNALIGNED) {<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> throw new Error();<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> }<a name="line.394"></a> |
| <span class="sourceLineNo">395</span> }<a name="line.395"></a> |
| <span class="sourceLineNo">396</span><a name="line.396"></a> |
| <span class="sourceLineNo">397</span> public UnsafeCommonPrefixer() {<a name="line.397"></a> |
| <span class="sourceLineNo">398</span> }<a name="line.398"></a> |
| <span class="sourceLineNo">399</span><a name="line.399"></a> |
| <span class="sourceLineNo">400</span> @Override<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> public int findCommonPrefix(ByteBuffer left, int leftOffset, int leftLength, byte[] right,<a name="line.401"></a> |
| <span class="sourceLineNo">402</span> int rightOffset, int rightLength) {<a name="line.402"></a> |
| <span class="sourceLineNo">403</span> long offset1Adj;<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> Object refObj1 = null;<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> if (left.isDirect()) {<a name="line.405"></a> |
| <span class="sourceLineNo">406</span> offset1Adj = leftOffset + UnsafeAccess.directBufferAddress(left);<a name="line.406"></a> |
| <span class="sourceLineNo">407</span> } else {<a name="line.407"></a> |
| <span class="sourceLineNo">408</span> offset1Adj = leftOffset + left.arrayOffset() + UnsafeAccess.BYTE_ARRAY_BASE_OFFSET;<a name="line.408"></a> |
| <span class="sourceLineNo">409</span> refObj1 = left.array();<a name="line.409"></a> |
| <span class="sourceLineNo">410</span> }<a name="line.410"></a> |
| <span class="sourceLineNo">411</span> return findCommonPrefixUnsafe(refObj1, offset1Adj, leftLength, right,<a name="line.411"></a> |
| <span class="sourceLineNo">412</span> rightOffset + UnsafeAccess.BYTE_ARRAY_BASE_OFFSET, rightLength);<a name="line.412"></a> |
| <span class="sourceLineNo">413</span> }<a name="line.413"></a> |
| <span class="sourceLineNo">414</span><a name="line.414"></a> |
| <span class="sourceLineNo">415</span> @Override<a name="line.415"></a> |
| <span class="sourceLineNo">416</span> public int findCommonPrefix(ByteBuffer left, int leftOffset, int leftLength, ByteBuffer right,<a name="line.416"></a> |
| <span class="sourceLineNo">417</span> int rightOffset, int rightLength) {<a name="line.417"></a> |
| <span class="sourceLineNo">418</span> long offset1Adj, offset2Adj;<a name="line.418"></a> |
| <span class="sourceLineNo">419</span> Object refObj1 = null, refObj2 = null;<a name="line.419"></a> |
| <span class="sourceLineNo">420</span> if (left.isDirect()) {<a name="line.420"></a> |
| <span class="sourceLineNo">421</span> offset1Adj = leftOffset + UnsafeAccess.directBufferAddress(left);<a name="line.421"></a> |
| <span class="sourceLineNo">422</span> } else {<a name="line.422"></a> |
| <span class="sourceLineNo">423</span> offset1Adj = leftOffset + left.arrayOffset() + UnsafeAccess.BYTE_ARRAY_BASE_OFFSET;<a name="line.423"></a> |
| <span class="sourceLineNo">424</span> refObj1 = left.array();<a name="line.424"></a> |
| <span class="sourceLineNo">425</span> }<a name="line.425"></a> |
| <span class="sourceLineNo">426</span> if (right.isDirect()) {<a name="line.426"></a> |
| <span class="sourceLineNo">427</span> offset2Adj = rightOffset + UnsafeAccess.directBufferAddress(right);<a name="line.427"></a> |
| <span class="sourceLineNo">428</span> } else {<a name="line.428"></a> |
| <span class="sourceLineNo">429</span> offset2Adj = rightOffset + right.arrayOffset() + UnsafeAccess.BYTE_ARRAY_BASE_OFFSET;<a name="line.429"></a> |
| <span class="sourceLineNo">430</span> refObj2 = right.array();<a name="line.430"></a> |
| <span class="sourceLineNo">431</span> }<a name="line.431"></a> |
| <span class="sourceLineNo">432</span> return findCommonPrefixUnsafe(refObj1, offset1Adj, leftLength, refObj2, offset2Adj,<a name="line.432"></a> |
| <span class="sourceLineNo">433</span> rightLength);<a name="line.433"></a> |
| <span class="sourceLineNo">434</span> }<a name="line.434"></a> |
| <span class="sourceLineNo">435</span> }<a name="line.435"></a> |
| <span class="sourceLineNo">436</span> }<a name="line.436"></a> |
| <span class="sourceLineNo">437</span><a name="line.437"></a> |
| <span class="sourceLineNo">438</span> /**<a name="line.438"></a> |
| <span class="sourceLineNo">439</span> * Similar to {@link WritableUtils#writeVLong(java.io.DataOutput, long)}, but writes to a<a name="line.439"></a> |
| <span class="sourceLineNo">440</span> * {@link ByteBuffer}.<a name="line.440"></a> |
| <span class="sourceLineNo">441</span> */<a name="line.441"></a> |
| <span class="sourceLineNo">442</span> public static void writeVLong(ByteBuffer out, long i) {<a name="line.442"></a> |
| <span class="sourceLineNo">443</span> if (i >= -112 && i <= 127) {<a name="line.443"></a> |
| <span class="sourceLineNo">444</span> out.put((byte) i);<a name="line.444"></a> |
| <span class="sourceLineNo">445</span> return;<a name="line.445"></a> |
| <span class="sourceLineNo">446</span> }<a name="line.446"></a> |
| <span class="sourceLineNo">447</span><a name="line.447"></a> |
| <span class="sourceLineNo">448</span> int len = -112;<a name="line.448"></a> |
| <span class="sourceLineNo">449</span> if (i < 0) {<a name="line.449"></a> |
| <span class="sourceLineNo">450</span> i ^= -1L; // take one's complement<a name="line.450"></a> |
| <span class="sourceLineNo">451</span> len = -120;<a name="line.451"></a> |
| <span class="sourceLineNo">452</span> }<a name="line.452"></a> |
| <span class="sourceLineNo">453</span><a name="line.453"></a> |
| <span class="sourceLineNo">454</span> long tmp = i;<a name="line.454"></a> |
| <span class="sourceLineNo">455</span> while (tmp != 0) {<a name="line.455"></a> |
| <span class="sourceLineNo">456</span> tmp = tmp >> 8;<a name="line.456"></a> |
| <span class="sourceLineNo">457</span> len--;<a name="line.457"></a> |
| <span class="sourceLineNo">458</span> }<a name="line.458"></a> |
| <span class="sourceLineNo">459</span><a name="line.459"></a> |
| <span class="sourceLineNo">460</span> out.put((byte) len);<a name="line.460"></a> |
| <span class="sourceLineNo">461</span><a name="line.461"></a> |
| <span class="sourceLineNo">462</span> len = (len < -120) ? -(len + 120) : -(len + 112);<a name="line.462"></a> |
| <span class="sourceLineNo">463</span><a name="line.463"></a> |
| <span class="sourceLineNo">464</span> for (int idx = len; idx != 0; idx--) {<a name="line.464"></a> |
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| <span class="sourceLineNo">466</span> long mask = 0xFFL << shiftbits;<a name="line.466"></a> |
| <span class="sourceLineNo">467</span> out.put((byte) ((i & mask) >> shiftbits));<a name="line.467"></a> |
| <span class="sourceLineNo">468</span> }<a name="line.468"></a> |
| <span class="sourceLineNo">469</span> }<a name="line.469"></a> |
| <span class="sourceLineNo">470</span><a name="line.470"></a> |
| <span class="sourceLineNo">471</span> /**<a name="line.471"></a> |
| <span class="sourceLineNo">472</span> * Similar to {@link WritableUtils#readVLong(java.io.DataInput)} but reads from a<a name="line.472"></a> |
| <span class="sourceLineNo">473</span> * {@link ByteBuff}.<a name="line.473"></a> |
| <span class="sourceLineNo">474</span> */<a name="line.474"></a> |
| <span class="sourceLineNo">475</span> public static long readVLong(ByteBuff buf) {<a name="line.475"></a> |
| <span class="sourceLineNo">476</span> byte firstByte = buf.get();<a name="line.476"></a> |
| <span class="sourceLineNo">477</span> int len = WritableUtils.decodeVIntSize(firstByte);<a name="line.477"></a> |
| <span class="sourceLineNo">478</span> if (len == 1) {<a name="line.478"></a> |
| <span class="sourceLineNo">479</span> return firstByte;<a name="line.479"></a> |
| <span class="sourceLineNo">480</span> } else {<a name="line.480"></a> |
| <span class="sourceLineNo">481</span> int remaining = len - 1;<a name="line.481"></a> |
| <span class="sourceLineNo">482</span> long i = 0;<a name="line.482"></a> |
| <span class="sourceLineNo">483</span> int offsetFromPos = 0;<a name="line.483"></a> |
| <span class="sourceLineNo">484</span> if (remaining >= Bytes.SIZEOF_INT) {<a name="line.484"></a> |
| <span class="sourceLineNo">485</span> // The int read has to be converted to unsigned long so the & op<a name="line.485"></a> |
| <span class="sourceLineNo">486</span> i = (buf.getIntAfterPosition(offsetFromPos) & 0x00000000ffffffffL);<a name="line.486"></a> |
| <span class="sourceLineNo">487</span> remaining -= Bytes.SIZEOF_INT;<a name="line.487"></a> |
| <span class="sourceLineNo">488</span> offsetFromPos += Bytes.SIZEOF_INT;<a name="line.488"></a> |
| <span class="sourceLineNo">489</span> }<a name="line.489"></a> |
| <span class="sourceLineNo">490</span> if (remaining >= Bytes.SIZEOF_SHORT) {<a name="line.490"></a> |
| <span class="sourceLineNo">491</span> short s = buf.getShortAfterPosition(offsetFromPos);<a name="line.491"></a> |
| <span class="sourceLineNo">492</span> i = i << 16;<a name="line.492"></a> |
| <span class="sourceLineNo">493</span> i = i | (s & 0xFFFF);<a name="line.493"></a> |
| <span class="sourceLineNo">494</span> remaining -= Bytes.SIZEOF_SHORT;<a name="line.494"></a> |
| <span class="sourceLineNo">495</span> offsetFromPos += Bytes.SIZEOF_SHORT;<a name="line.495"></a> |
| <span class="sourceLineNo">496</span> }<a name="line.496"></a> |
| <span class="sourceLineNo">497</span> for (int idx = 0; idx < remaining; idx++) {<a name="line.497"></a> |
| <span class="sourceLineNo">498</span> byte b = buf.getByteAfterPosition(offsetFromPos + idx);<a name="line.498"></a> |
| <span class="sourceLineNo">499</span> i = i << 8;<a name="line.499"></a> |
| <span class="sourceLineNo">500</span> i = i | (b & 0xFF);<a name="line.500"></a> |
| <span class="sourceLineNo">501</span> }<a name="line.501"></a> |
| <span class="sourceLineNo">502</span> buf.skip(len - 1);<a name="line.502"></a> |
| <span class="sourceLineNo">503</span> return WritableUtils.isNegativeVInt(firstByte) ? ~i : i;<a name="line.503"></a> |
| <span class="sourceLineNo">504</span> }<a name="line.504"></a> |
| <span class="sourceLineNo">505</span> }<a name="line.505"></a> |
| <span class="sourceLineNo">506</span><a name="line.506"></a> |
| <span class="sourceLineNo">507</span> /**<a name="line.507"></a> |
| <span class="sourceLineNo">508</span> * Similar to {@link WritableUtils#readVLong(DataInput)} but reads from a {@link ByteBuffer}.<a name="line.508"></a> |
| <span class="sourceLineNo">509</span> */<a name="line.509"></a> |
| <span class="sourceLineNo">510</span> public static long readVLong(ByteBuffer buf) {<a name="line.510"></a> |
| <span class="sourceLineNo">511</span> byte firstByte = buf.get();<a name="line.511"></a> |
| <span class="sourceLineNo">512</span> int len = WritableUtils.decodeVIntSize(firstByte);<a name="line.512"></a> |
| <span class="sourceLineNo">513</span> if (len == 1) {<a name="line.513"></a> |
| <span class="sourceLineNo">514</span> return firstByte;<a name="line.514"></a> |
| <span class="sourceLineNo">515</span> } else {<a name="line.515"></a> |
| <span class="sourceLineNo">516</span> int remaining = len - 1;<a name="line.516"></a> |
| <span class="sourceLineNo">517</span> long i = 0;<a name="line.517"></a> |
| <span class="sourceLineNo">518</span> int offsetFromPos = 0;<a name="line.518"></a> |
| <span class="sourceLineNo">519</span> if (remaining >= Bytes.SIZEOF_INT) {<a name="line.519"></a> |
| <span class="sourceLineNo">520</span> // The int read has to be converted to unsigned long so the & op<a name="line.520"></a> |
| <span class="sourceLineNo">521</span> i = (buf.getInt(buf.position() + offsetFromPos) & 0x00000000ffffffffL);<a name="line.521"></a> |
| <span class="sourceLineNo">522</span> remaining -= Bytes.SIZEOF_INT;<a name="line.522"></a> |
| <span class="sourceLineNo">523</span> offsetFromPos += Bytes.SIZEOF_INT;<a name="line.523"></a> |
| <span class="sourceLineNo">524</span> }<a name="line.524"></a> |
| <span class="sourceLineNo">525</span> if (remaining >= Bytes.SIZEOF_SHORT) {<a name="line.525"></a> |
| <span class="sourceLineNo">526</span> short s = buf.getShort(buf.position() + offsetFromPos);<a name="line.526"></a> |
| <span class="sourceLineNo">527</span> i = i << 16;<a name="line.527"></a> |
| <span class="sourceLineNo">528</span> i = i | (s & 0xFFFF);<a name="line.528"></a> |
| <span class="sourceLineNo">529</span> remaining -= Bytes.SIZEOF_SHORT;<a name="line.529"></a> |
| <span class="sourceLineNo">530</span> offsetFromPos += Bytes.SIZEOF_SHORT;<a name="line.530"></a> |
| <span class="sourceLineNo">531</span> }<a name="line.531"></a> |
| <span class="sourceLineNo">532</span> for (int idx = 0; idx < remaining; idx++) {<a name="line.532"></a> |
| <span class="sourceLineNo">533</span> byte b = buf.get(buf.position() + offsetFromPos + idx);<a name="line.533"></a> |
| <span class="sourceLineNo">534</span> i = i << 8;<a name="line.534"></a> |
| <span class="sourceLineNo">535</span> i = i | (b & 0xFF);<a name="line.535"></a> |
| <span class="sourceLineNo">536</span> }<a name="line.536"></a> |
| <span class="sourceLineNo">537</span> buf.position(buf.position() + len - 1);<a name="line.537"></a> |
| <span class="sourceLineNo">538</span> return WritableUtils.isNegativeVInt(firstByte) ? ~i : i;<a name="line.538"></a> |
| <span class="sourceLineNo">539</span> }<a name="line.539"></a> |
| <span class="sourceLineNo">540</span> }<a name="line.540"></a> |
| <span class="sourceLineNo">541</span><a name="line.541"></a> |
| <span class="sourceLineNo">542</span> /**<a name="line.542"></a> |
| <span class="sourceLineNo">543</span> * Put in buffer integer using 7 bit encoding. For each written byte: 7 bits are used to store<a name="line.543"></a> |
| <span class="sourceLineNo">544</span> * value 1 bit is used to indicate whether there is next bit.<a name="line.544"></a> |
| <span class="sourceLineNo">545</span> * @param value Int to be compressed.<a name="line.545"></a> |
| <span class="sourceLineNo">546</span> * @param out Where to put compressed data<a name="line.546"></a> |
| <span class="sourceLineNo">547</span> * @return Number of bytes written.<a name="line.547"></a> |
| <span class="sourceLineNo">548</span> * @throws IOException on stream error<a name="line.548"></a> |
| <span class="sourceLineNo">549</span> */<a name="line.549"></a> |
| <span class="sourceLineNo">550</span> public static int putCompressedInt(OutputStream out, final int value) throws IOException {<a name="line.550"></a> |
| <span class="sourceLineNo">551</span> int i = 0;<a name="line.551"></a> |
| <span class="sourceLineNo">552</span> int tmpvalue = value;<a name="line.552"></a> |
| <span class="sourceLineNo">553</span> do {<a name="line.553"></a> |
| <span class="sourceLineNo">554</span> byte b = (byte) (tmpvalue & VALUE_MASK);<a name="line.554"></a> |
| <span class="sourceLineNo">555</span> tmpvalue >>>= NEXT_BIT_SHIFT;<a name="line.555"></a> |
| <span class="sourceLineNo">556</span> if (tmpvalue != 0) {<a name="line.556"></a> |
| <span class="sourceLineNo">557</span> b |= (byte) NEXT_BIT_MASK;<a name="line.557"></a> |
| <span class="sourceLineNo">558</span> }<a name="line.558"></a> |
| <span class="sourceLineNo">559</span> out.write(b);<a name="line.559"></a> |
| <span class="sourceLineNo">560</span> i++;<a name="line.560"></a> |
| <span class="sourceLineNo">561</span> } while (tmpvalue != 0);<a name="line.561"></a> |
| <span class="sourceLineNo">562</span> return i;<a name="line.562"></a> |
| <span class="sourceLineNo">563</span> }<a name="line.563"></a> |
| <span class="sourceLineNo">564</span><a name="line.564"></a> |
| <span class="sourceLineNo">565</span> /**<a name="line.565"></a> |
| <span class="sourceLineNo">566</span> * Put in output stream 32 bit integer (Big Endian byte order).<a name="line.566"></a> |
| <span class="sourceLineNo">567</span> * @param out Where to put integer.<a name="line.567"></a> |
| <span class="sourceLineNo">568</span> * @param value Value of integer.<a name="line.568"></a> |
| <span class="sourceLineNo">569</span> * @throws IOException On stream error.<a name="line.569"></a> |
| <span class="sourceLineNo">570</span> */<a name="line.570"></a> |
| <span class="sourceLineNo">571</span> public static void putInt(OutputStream out, final int value) throws IOException {<a name="line.571"></a> |
| <span class="sourceLineNo">572</span> // We have writeInt in ByteBufferOutputStream so that it can directly write<a name="line.572"></a> |
| <span class="sourceLineNo">573</span> // int to underlying<a name="line.573"></a> |
| <span class="sourceLineNo">574</span> // ByteBuffer in one step.<a name="line.574"></a> |
| <span class="sourceLineNo">575</span> if (out instanceof ByteBufferWriter) {<a name="line.575"></a> |
| <span class="sourceLineNo">576</span> ((ByteBufferWriter) out).writeInt(value);<a name="line.576"></a> |
| <span class="sourceLineNo">577</span> } else {<a name="line.577"></a> |
| <span class="sourceLineNo">578</span> StreamUtils.writeInt(out, value);<a name="line.578"></a> |
| <span class="sourceLineNo">579</span> }<a name="line.579"></a> |
| <span class="sourceLineNo">580</span> }<a name="line.580"></a> |
| <span class="sourceLineNo">581</span><a name="line.581"></a> |
| <span class="sourceLineNo">582</span> public static byte toByte(ByteBuffer buffer, int offset) {<a name="line.582"></a> |
| <span class="sourceLineNo">583</span> if (UNSAFE_AVAIL) {<a name="line.583"></a> |
| <span class="sourceLineNo">584</span> return UnsafeAccess.toByte(buffer, offset);<a name="line.584"></a> |
| <span class="sourceLineNo">585</span> } else {<a name="line.585"></a> |
| <span class="sourceLineNo">586</span> return buffer.get(offset);<a name="line.586"></a> |
| <span class="sourceLineNo">587</span> }<a name="line.587"></a> |
| <span class="sourceLineNo">588</span> }<a name="line.588"></a> |
| <span class="sourceLineNo">589</span><a name="line.589"></a> |
| <span class="sourceLineNo">590</span> /**<a name="line.590"></a> |
| <span class="sourceLineNo">591</span> * Copy the data to the output stream and update position in buffer.<a name="line.591"></a> |
| <span class="sourceLineNo">592</span> * @param out the stream to write bytes to<a name="line.592"></a> |
| <span class="sourceLineNo">593</span> * @param in the buffer to read bytes from<a name="line.593"></a> |
| <span class="sourceLineNo">594</span> * @param length the number of bytes to copy<a name="line.594"></a> |
| <span class="sourceLineNo">595</span> */<a name="line.595"></a> |
| <span class="sourceLineNo">596</span> public static void moveBufferToStream(OutputStream out, ByteBuffer in, int length)<a name="line.596"></a> |
| <span class="sourceLineNo">597</span> throws IOException {<a name="line.597"></a> |
| <span class="sourceLineNo">598</span> copyBufferToStream(out, in, in.position(), length);<a name="line.598"></a> |
| <span class="sourceLineNo">599</span> skip(in, length);<a name="line.599"></a> |
| <span class="sourceLineNo">600</span> }<a name="line.600"></a> |
| <span class="sourceLineNo">601</span><a name="line.601"></a> |
| <span class="sourceLineNo">602</span> /**<a name="line.602"></a> |
| <span class="sourceLineNo">603</span> * Copy data from a buffer to an output stream. Does not update the position in the buffer.<a name="line.603"></a> |
| <span class="sourceLineNo">604</span> * @param out the stream to write bytes to<a name="line.604"></a> |
| <span class="sourceLineNo">605</span> * @param in the buffer to read bytes from<a name="line.605"></a> |
| <span class="sourceLineNo">606</span> * @param offset the offset in the buffer (from the buffer's array offset) to start copying bytes<a name="line.606"></a> |
| <span class="sourceLineNo">607</span> * from<a name="line.607"></a> |
| <span class="sourceLineNo">608</span> * @param length the number of bytes to copy<a name="line.608"></a> |
| <span class="sourceLineNo">609</span> */<a name="line.609"></a> |
| <span class="sourceLineNo">610</span> public static void copyBufferToStream(OutputStream out, ByteBuffer in, int offset, int length)<a name="line.610"></a> |
| <span class="sourceLineNo">611</span> throws IOException {<a name="line.611"></a> |
| <span class="sourceLineNo">612</span> if (out instanceof ByteBufferWriter) {<a name="line.612"></a> |
| <span class="sourceLineNo">613</span> ((ByteBufferWriter) out).write(in, offset, length);<a name="line.613"></a> |
| <span class="sourceLineNo">614</span> } else if (in.hasArray()) {<a name="line.614"></a> |
| <span class="sourceLineNo">615</span> out.write(in.array(), in.arrayOffset() + offset, length);<a name="line.615"></a> |
| <span class="sourceLineNo">616</span> } else {<a name="line.616"></a> |
| <span class="sourceLineNo">617</span> for (int i = 0; i < length; ++i) {<a name="line.617"></a> |
| <span class="sourceLineNo">618</span> out.write(toByte(in, offset + i));<a name="line.618"></a> |
| <span class="sourceLineNo">619</span> }<a name="line.619"></a> |
| <span class="sourceLineNo">620</span> }<a name="line.620"></a> |
| <span class="sourceLineNo">621</span> }<a name="line.621"></a> |
| <span class="sourceLineNo">622</span><a name="line.622"></a> |
| <span class="sourceLineNo">623</span> /**<a name="line.623"></a> |
| <span class="sourceLineNo">624</span> * Copy data from a buffer to an output stream. Does not update the position in the buffer.<a name="line.624"></a> |
| <span class="sourceLineNo">625</span> * @param out the output stream to write bytes to<a name="line.625"></a> |
| <span class="sourceLineNo">626</span> * @param in the buffer to read bytes from<a name="line.626"></a> |
| <span class="sourceLineNo">627</span> * @param offset the offset in the buffer (from the buffer's array offset) to start copying bytes<a name="line.627"></a> |
| <span class="sourceLineNo">628</span> * from<a name="line.628"></a> |
| <span class="sourceLineNo">629</span> * @param length the number of bytes to copy<a name="line.629"></a> |
| <span class="sourceLineNo">630</span> */<a name="line.630"></a> |
| <span class="sourceLineNo">631</span> public static void copyBufferToStream(DataOutput out, ByteBuffer in, int offset, int length)<a name="line.631"></a> |
| <span class="sourceLineNo">632</span> throws IOException {<a name="line.632"></a> |
| <span class="sourceLineNo">633</span> if (out instanceof ByteBufferWriter) {<a name="line.633"></a> |
| <span class="sourceLineNo">634</span> ((ByteBufferWriter) out).write(in, offset, length);<a name="line.634"></a> |
| <span class="sourceLineNo">635</span> } else if (in.hasArray()) {<a name="line.635"></a> |
| <span class="sourceLineNo">636</span> out.write(in.array(), in.arrayOffset() + offset, length);<a name="line.636"></a> |
| <span class="sourceLineNo">637</span> } else {<a name="line.637"></a> |
| <span class="sourceLineNo">638</span> for (int i = 0; i < length; ++i) {<a name="line.638"></a> |
| <span class="sourceLineNo">639</span> out.write(toByte(in, offset + i));<a name="line.639"></a> |
| <span class="sourceLineNo">640</span> }<a name="line.640"></a> |
| <span class="sourceLineNo">641</span> }<a name="line.641"></a> |
| <span class="sourceLineNo">642</span> }<a name="line.642"></a> |
| <span class="sourceLineNo">643</span><a name="line.643"></a> |
| <span class="sourceLineNo">644</span> public static int putLong(OutputStream out, final long value, final int fitInBytes)<a name="line.644"></a> |
| <span class="sourceLineNo">645</span> throws IOException {<a name="line.645"></a> |
| <span class="sourceLineNo">646</span> long tmpValue = value;<a name="line.646"></a> |
| <span class="sourceLineNo">647</span> for (int i = 0; i < fitInBytes; ++i) {<a name="line.647"></a> |
| <span class="sourceLineNo">648</span> out.write((byte) (tmpValue & 0xff));<a name="line.648"></a> |
| <span class="sourceLineNo">649</span> tmpValue >>>= 8;<a name="line.649"></a> |
| <span class="sourceLineNo">650</span> }<a name="line.650"></a> |
| <span class="sourceLineNo">651</span> return fitInBytes;<a name="line.651"></a> |
| <span class="sourceLineNo">652</span> }<a name="line.652"></a> |
| <span class="sourceLineNo">653</span><a name="line.653"></a> |
| <span class="sourceLineNo">654</span> public static int putByte(ByteBuffer buffer, int offset, byte b) {<a name="line.654"></a> |
| <span class="sourceLineNo">655</span> if (UNSAFE_AVAIL) {<a name="line.655"></a> |
| <span class="sourceLineNo">656</span> return UnsafeAccess.putByte(buffer, offset, b);<a name="line.656"></a> |
| <span class="sourceLineNo">657</span> } else {<a name="line.657"></a> |
| <span class="sourceLineNo">658</span> buffer.put(offset, b);<a name="line.658"></a> |
| <span class="sourceLineNo">659</span> return offset + 1;<a name="line.659"></a> |
| <span class="sourceLineNo">660</span> }<a name="line.660"></a> |
| <span class="sourceLineNo">661</span> }<a name="line.661"></a> |
| <span class="sourceLineNo">662</span><a name="line.662"></a> |
| <span class="sourceLineNo">663</span> /**<a name="line.663"></a> |
| <span class="sourceLineNo">664</span> * Check how many bytes are required to store value.<a name="line.664"></a> |
| <span class="sourceLineNo">665</span> * @param value Value which size will be tested.<a name="line.665"></a> |
| <span class="sourceLineNo">666</span> * @return How many bytes are required to store value.<a name="line.666"></a> |
| <span class="sourceLineNo">667</span> */<a name="line.667"></a> |
| <span class="sourceLineNo">668</span> public static int longFitsIn(final long value) {<a name="line.668"></a> |
| <span class="sourceLineNo">669</span> if (value < 0) {<a name="line.669"></a> |
| <span class="sourceLineNo">670</span> return 8;<a name="line.670"></a> |
| <span class="sourceLineNo">671</span> }<a name="line.671"></a> |
| <span class="sourceLineNo">672</span><a name="line.672"></a> |
| <span class="sourceLineNo">673</span> if (value < (1L << (4 * 8))) {<a name="line.673"></a> |
| <span class="sourceLineNo">674</span> // no more than 4 bytes<a name="line.674"></a> |
| <span class="sourceLineNo">675</span> if (value < (1L << (2 * 8))) {<a name="line.675"></a> |
| <span class="sourceLineNo">676</span> if (value < (1L << (1 * 8))) {<a name="line.676"></a> |
| <span class="sourceLineNo">677</span> return 1;<a name="line.677"></a> |
| <span class="sourceLineNo">678</span> }<a name="line.678"></a> |
| <span class="sourceLineNo">679</span> return 2;<a name="line.679"></a> |
| <span class="sourceLineNo">680</span> }<a name="line.680"></a> |
| <span class="sourceLineNo">681</span> if (value < (1L << (3 * 8))) {<a name="line.681"></a> |
| <span class="sourceLineNo">682</span> return 3;<a name="line.682"></a> |
| <span class="sourceLineNo">683</span> }<a name="line.683"></a> |
| <span class="sourceLineNo">684</span> return 4;<a name="line.684"></a> |
| <span class="sourceLineNo">685</span> }<a name="line.685"></a> |
| <span class="sourceLineNo">686</span> // more than 4 bytes<a name="line.686"></a> |
| <span class="sourceLineNo">687</span> if (value < (1L << (6 * 8))) {<a name="line.687"></a> |
| <span class="sourceLineNo">688</span> if (value < (1L << (5 * 8))) {<a name="line.688"></a> |
| <span class="sourceLineNo">689</span> return 5;<a name="line.689"></a> |
| <span class="sourceLineNo">690</span> }<a name="line.690"></a> |
| <span class="sourceLineNo">691</span> return 6;<a name="line.691"></a> |
| <span class="sourceLineNo">692</span> }<a name="line.692"></a> |
| <span class="sourceLineNo">693</span> if (value < (1L << (7 * 8))) {<a name="line.693"></a> |
| <span class="sourceLineNo">694</span> return 7;<a name="line.694"></a> |
| <span class="sourceLineNo">695</span> }<a name="line.695"></a> |
| <span class="sourceLineNo">696</span> return 8;<a name="line.696"></a> |
| <span class="sourceLineNo">697</span> }<a name="line.697"></a> |
| <span class="sourceLineNo">698</span><a name="line.698"></a> |
| <span class="sourceLineNo">699</span> /**<a name="line.699"></a> |
| <span class="sourceLineNo">700</span> * Check how many bytes is required to store value.<a name="line.700"></a> |
| <span class="sourceLineNo">701</span> * @param value Value which size will be tested.<a name="line.701"></a> |
| <span class="sourceLineNo">702</span> * @return How many bytes are required to store value.<a name="line.702"></a> |
| <span class="sourceLineNo">703</span> */<a name="line.703"></a> |
| <span class="sourceLineNo">704</span> public static int intFitsIn(final int value) {<a name="line.704"></a> |
| <span class="sourceLineNo">705</span> if (value < 0) {<a name="line.705"></a> |
| <span class="sourceLineNo">706</span> return 4;<a name="line.706"></a> |
| <span class="sourceLineNo">707</span> }<a name="line.707"></a> |
| <span class="sourceLineNo">708</span><a name="line.708"></a> |
| <span class="sourceLineNo">709</span> if (value < (1 << (2 * 8))) {<a name="line.709"></a> |
| <span class="sourceLineNo">710</span> if (value < (1 << (1 * 8))) {<a name="line.710"></a> |
| <span class="sourceLineNo">711</span> return 1;<a name="line.711"></a> |
| <span class="sourceLineNo">712</span> }<a name="line.712"></a> |
| <span class="sourceLineNo">713</span> return 2;<a name="line.713"></a> |
| <span class="sourceLineNo">714</span> }<a name="line.714"></a> |
| <span class="sourceLineNo">715</span> if (value <= (1 << (3 * 8))) {<a name="line.715"></a> |
| <span class="sourceLineNo">716</span> return 3;<a name="line.716"></a> |
| <span class="sourceLineNo">717</span> }<a name="line.717"></a> |
| <span class="sourceLineNo">718</span> return 4;<a name="line.718"></a> |
| <span class="sourceLineNo">719</span> }<a name="line.719"></a> |
| <span class="sourceLineNo">720</span><a name="line.720"></a> |
| <span class="sourceLineNo">721</span> /**<a name="line.721"></a> |
| <span class="sourceLineNo">722</span> * Read integer from stream coded in 7 bits and increment position.<a name="line.722"></a> |
| <span class="sourceLineNo">723</span> * @return the integer that has been read<a name="line.723"></a> |
| <span class="sourceLineNo">724</span> * @throws IOException on stream error<a name="line.724"></a> |
| <span class="sourceLineNo">725</span> */<a name="line.725"></a> |
| <span class="sourceLineNo">726</span> public static int readCompressedInt(InputStream input) throws IOException {<a name="line.726"></a> |
| <span class="sourceLineNo">727</span> int result = 0;<a name="line.727"></a> |
| <span class="sourceLineNo">728</span> int i = 0;<a name="line.728"></a> |
| <span class="sourceLineNo">729</span> byte b;<a name="line.729"></a> |
| <span class="sourceLineNo">730</span> do {<a name="line.730"></a> |
| <span class="sourceLineNo">731</span> b = (byte) input.read();<a name="line.731"></a> |
| <span class="sourceLineNo">732</span> result += (b & VALUE_MASK) << (NEXT_BIT_SHIFT * i);<a name="line.732"></a> |
| <span class="sourceLineNo">733</span> i++;<a name="line.733"></a> |
| <span class="sourceLineNo">734</span> if (i > Bytes.SIZEOF_INT + 1) {<a name="line.734"></a> |
| <span class="sourceLineNo">735</span> throw new IllegalStateException(<a name="line.735"></a> |
| <span class="sourceLineNo">736</span> "Corrupted compressed int (too long: " + (i + 1) + " bytes)");<a name="line.736"></a> |
| <span class="sourceLineNo">737</span> }<a name="line.737"></a> |
| <span class="sourceLineNo">738</span> } while (0 != (b & NEXT_BIT_MASK));<a name="line.738"></a> |
| <span class="sourceLineNo">739</span> return result;<a name="line.739"></a> |
| <span class="sourceLineNo">740</span> }<a name="line.740"></a> |
| <span class="sourceLineNo">741</span><a name="line.741"></a> |
| <span class="sourceLineNo">742</span> /**<a name="line.742"></a> |
| <span class="sourceLineNo">743</span> * Read integer from buffer coded in 7 bits and increment position.<a name="line.743"></a> |
| <span class="sourceLineNo">744</span> * @return Read integer.<a name="line.744"></a> |
| <span class="sourceLineNo">745</span> */<a name="line.745"></a> |
| <span class="sourceLineNo">746</span> public static int readCompressedInt(ByteBuffer buffer) {<a name="line.746"></a> |
| <span class="sourceLineNo">747</span> byte b = buffer.get();<a name="line.747"></a> |
| <span class="sourceLineNo">748</span> if ((b & NEXT_BIT_MASK) != 0) {<a name="line.748"></a> |
| <span class="sourceLineNo">749</span> return (b & VALUE_MASK) + (readCompressedInt(buffer) << NEXT_BIT_SHIFT);<a name="line.749"></a> |
| <span class="sourceLineNo">750</span> }<a name="line.750"></a> |
| <span class="sourceLineNo">751</span> return b & VALUE_MASK;<a name="line.751"></a> |
| <span class="sourceLineNo">752</span> }<a name="line.752"></a> |
| <span class="sourceLineNo">753</span><a name="line.753"></a> |
| <span class="sourceLineNo">754</span> /**<a name="line.754"></a> |
| <span class="sourceLineNo">755</span> * Read long which was written to fitInBytes bytes and increment position.<a name="line.755"></a> |
| <span class="sourceLineNo">756</span> * @param fitInBytes In how many bytes given long is stored.<a name="line.756"></a> |
| <span class="sourceLineNo">757</span> * @return The value of parsed long.<a name="line.757"></a> |
| <span class="sourceLineNo">758</span> * @throws IOException on stream error<a name="line.758"></a> |
| <span class="sourceLineNo">759</span> */<a name="line.759"></a> |
| <span class="sourceLineNo">760</span> public static long readLong(InputStream in, final int fitInBytes) throws IOException {<a name="line.760"></a> |
| <span class="sourceLineNo">761</span> long tmpLong = 0;<a name="line.761"></a> |
| <span class="sourceLineNo">762</span> for (int i = 0; i < fitInBytes; ++i) {<a name="line.762"></a> |
| <span class="sourceLineNo">763</span> tmpLong |= (in.read() & 0xffL) << (8 * i);<a name="line.763"></a> |
| <span class="sourceLineNo">764</span> }<a name="line.764"></a> |
| <span class="sourceLineNo">765</span> return tmpLong;<a name="line.765"></a> |
| <span class="sourceLineNo">766</span> }<a name="line.766"></a> |
| <span class="sourceLineNo">767</span><a name="line.767"></a> |
| <span class="sourceLineNo">768</span> /**<a name="line.768"></a> |
| <span class="sourceLineNo">769</span> * Read long which was written to fitInBytes bytes and increment position.<a name="line.769"></a> |
| <span class="sourceLineNo">770</span> * @param fitInBytes In how many bytes given long is stored.<a name="line.770"></a> |
| <span class="sourceLineNo">771</span> * @return The value of parsed long.<a name="line.771"></a> |
| <span class="sourceLineNo">772</span> */<a name="line.772"></a> |
| <span class="sourceLineNo">773</span> public static long readLong(ByteBuffer in, final int fitInBytes) {<a name="line.773"></a> |
| <span class="sourceLineNo">774</span> long tmpLength = 0;<a name="line.774"></a> |
| <span class="sourceLineNo">775</span> for (int i = 0; i < fitInBytes; ++i) {<a name="line.775"></a> |
| <span class="sourceLineNo">776</span> tmpLength |= (in.get() & 0xffL) << (8L * i);<a name="line.776"></a> |
| <span class="sourceLineNo">777</span> }<a name="line.777"></a> |
| <span class="sourceLineNo">778</span> return tmpLength;<a name="line.778"></a> |
| <span class="sourceLineNo">779</span> }<a name="line.779"></a> |
| <span class="sourceLineNo">780</span><a name="line.780"></a> |
| <span class="sourceLineNo">781</span> /**<a name="line.781"></a> |
| <span class="sourceLineNo">782</span> * Copy the given number of bytes from the given stream and put it at the current position of the<a name="line.782"></a> |
| <span class="sourceLineNo">783</span> * given buffer, updating the position in the buffer.<a name="line.783"></a> |
| <span class="sourceLineNo">784</span> * @param out the buffer to write data to<a name="line.784"></a> |
| <span class="sourceLineNo">785</span> * @param in the stream to read data from<a name="line.785"></a> |
| <span class="sourceLineNo">786</span> * @param length the number of bytes to read/write<a name="line.786"></a> |
| <span class="sourceLineNo">787</span> */<a name="line.787"></a> |
| <span class="sourceLineNo">788</span> public static void copyFromStreamToBuffer(ByteBuffer out, DataInputStream in, int length)<a name="line.788"></a> |
| <span class="sourceLineNo">789</span> throws IOException {<a name="line.789"></a> |
| <span class="sourceLineNo">790</span> if (out.hasArray()) {<a name="line.790"></a> |
| <span class="sourceLineNo">791</span> in.readFully(out.array(), out.position() + out.arrayOffset(), length);<a name="line.791"></a> |
| <span class="sourceLineNo">792</span> skip(out, length);<a name="line.792"></a> |
| <span class="sourceLineNo">793</span> } else {<a name="line.793"></a> |
| <span class="sourceLineNo">794</span> for (int i = 0; i < length; ++i) {<a name="line.794"></a> |
| <span class="sourceLineNo">795</span> out.put(in.readByte());<a name="line.795"></a> |
| <span class="sourceLineNo">796</span> }<a name="line.796"></a> |
| <span class="sourceLineNo">797</span> }<a name="line.797"></a> |
| <span class="sourceLineNo">798</span> }<a name="line.798"></a> |
| <span class="sourceLineNo">799</span><a name="line.799"></a> |
| <span class="sourceLineNo">800</span> /**<a name="line.800"></a> |
| <span class="sourceLineNo">801</span> * Copy from the InputStream to a new heap ByteBuffer until the InputStream is exhausted.<a name="line.801"></a> |
| <span class="sourceLineNo">802</span> */<a name="line.802"></a> |
| <span class="sourceLineNo">803</span> public static ByteBuffer drainInputStreamToBuffer(InputStream is) throws IOException {<a name="line.803"></a> |
| <span class="sourceLineNo">804</span> ByteArrayOutputStream baos = new ByteArrayOutputStream(4096);<a name="line.804"></a> |
| <span class="sourceLineNo">805</span> IOUtils.copyBytes(is, baos, 4096, true);<a name="line.805"></a> |
| <span class="sourceLineNo">806</span> ByteBuffer buffer = ByteBuffer.wrap(baos.toByteArray());<a name="line.806"></a> |
| <span class="sourceLineNo">807</span> buffer.rewind();<a name="line.807"></a> |
| <span class="sourceLineNo">808</span> return buffer;<a name="line.808"></a> |
| <span class="sourceLineNo">809</span> }<a name="line.809"></a> |
| <span class="sourceLineNo">810</span><a name="line.810"></a> |
| <span class="sourceLineNo">811</span> /**<a name="line.811"></a> |
| <span class="sourceLineNo">812</span> * Copy one buffer's whole data to another. Write starts at the current position of 'out' buffer.<a name="line.812"></a> |
| <span class="sourceLineNo">813</span> * Note : This will advance the position marker of {@code out} and also change the position maker<a name="line.813"></a> |
| <span class="sourceLineNo">814</span> * for {@code in}.<a name="line.814"></a> |
| <span class="sourceLineNo">815</span> * @param in source buffer<a name="line.815"></a> |
| <span class="sourceLineNo">816</span> * @param out destination buffer<a name="line.816"></a> |
| <span class="sourceLineNo">817</span> */<a name="line.817"></a> |
| <span class="sourceLineNo">818</span> public static void copyFromBufferToBuffer(ByteBuffer in, ByteBuffer out) {<a name="line.818"></a> |
| <span class="sourceLineNo">819</span> if (in.hasArray() && out.hasArray()) {<a name="line.819"></a> |
| <span class="sourceLineNo">820</span> int length = in.remaining();<a name="line.820"></a> |
| <span class="sourceLineNo">821</span> System.arraycopy(in.array(), in.arrayOffset(), out.array(), out.arrayOffset(), length);<a name="line.821"></a> |
| <span class="sourceLineNo">822</span> out.position(out.position() + length);<a name="line.822"></a> |
| <span class="sourceLineNo">823</span> in.position(in.limit());<a name="line.823"></a> |
| <span class="sourceLineNo">824</span> } else if (UNSAFE_AVAIL) {<a name="line.824"></a> |
| <span class="sourceLineNo">825</span> int length = in.remaining();<a name="line.825"></a> |
| <span class="sourceLineNo">826</span> UnsafeAccess.copy(in, in.position(), out, out.position(), length);<a name="line.826"></a> |
| <span class="sourceLineNo">827</span> out.position(out.position() + length);<a name="line.827"></a> |
| <span class="sourceLineNo">828</span> in.position(in.limit());<a name="line.828"></a> |
| <span class="sourceLineNo">829</span> } else {<a name="line.829"></a> |
| <span class="sourceLineNo">830</span> out.put(in);<a name="line.830"></a> |
| <span class="sourceLineNo">831</span> }<a name="line.831"></a> |
| <span class="sourceLineNo">832</span> }<a name="line.832"></a> |
| <span class="sourceLineNo">833</span><a name="line.833"></a> |
| <span class="sourceLineNo">834</span> /**<a name="line.834"></a> |
| <span class="sourceLineNo">835</span> * Copy from one buffer to another from given offset. This will be absolute positional copying and<a name="line.835"></a> |
| <span class="sourceLineNo">836</span> * won't affect the position of any of the buffers.<a name="line.836"></a> |
| <span class="sourceLineNo">837</span> * @param in input bytebuffer<a name="line.837"></a> |
| <span class="sourceLineNo">838</span> * @param out destination bytebuffer<a name="line.838"></a> |
| <span class="sourceLineNo">839</span> * @param sourceOffset offset of source buffer<a name="line.839"></a> |
| <span class="sourceLineNo">840</span> * @param destinationOffset offset of destination buffer<a name="line.840"></a> |
| <span class="sourceLineNo">841</span> * @param length the number of bytes to copy<a name="line.841"></a> |
| <span class="sourceLineNo">842</span> */<a name="line.842"></a> |
| <span class="sourceLineNo">843</span> public static void copyFromBufferToBuffer(ByteBuffer in, ByteBuffer out, int sourceOffset,<a name="line.843"></a> |
| <span class="sourceLineNo">844</span> int destinationOffset, int length) {<a name="line.844"></a> |
| <span class="sourceLineNo">845</span> if (in.hasArray() && out.hasArray()) {<a name="line.845"></a> |
| <span class="sourceLineNo">846</span> System.arraycopy(in.array(), sourceOffset + in.arrayOffset(), out.array(),<a name="line.846"></a> |
| <span class="sourceLineNo">847</span> out.arrayOffset() + destinationOffset, length);<a name="line.847"></a> |
| <span class="sourceLineNo">848</span> } else if (UNSAFE_AVAIL) {<a name="line.848"></a> |
| <span class="sourceLineNo">849</span> UnsafeAccess.copy(in, sourceOffset, out, destinationOffset, length);<a name="line.849"></a> |
| <span class="sourceLineNo">850</span> } else {<a name="line.850"></a> |
| <span class="sourceLineNo">851</span> ByteBuffer outDup = out.duplicate();<a name="line.851"></a> |
| <span class="sourceLineNo">852</span> outDup.position(destinationOffset);<a name="line.852"></a> |
| <span class="sourceLineNo">853</span> ByteBuffer inDup = in.duplicate();<a name="line.853"></a> |
| <span class="sourceLineNo">854</span> inDup.position(sourceOffset).limit(sourceOffset + length);<a name="line.854"></a> |
| <span class="sourceLineNo">855</span> outDup.put(inDup);<a name="line.855"></a> |
| <span class="sourceLineNo">856</span> }<a name="line.856"></a> |
| <span class="sourceLineNo">857</span> // We used to return a result but disabled; return destinationOffset + length;<a name="line.857"></a> |
| <span class="sourceLineNo">858</span> }<a name="line.858"></a> |
| <span class="sourceLineNo">859</span><a name="line.859"></a> |
| <span class="sourceLineNo">860</span> /**<a name="line.860"></a> |
| <span class="sourceLineNo">861</span> * Copy from one buffer to another from given offset.<a name="line.861"></a> |
| <span class="sourceLineNo">862</span> * <p><a name="line.862"></a> |
| <span class="sourceLineNo">863</span> * Note : This will advance the position marker of {@code out} but not change the position maker<a name="line.863"></a> |
| <span class="sourceLineNo">864</span> * for {@code in}<a name="line.864"></a> |
| <span class="sourceLineNo">865</span> * @param in source buffer<a name="line.865"></a> |
| <span class="sourceLineNo">866</span> * @param out destination buffer<a name="line.866"></a> |
| <span class="sourceLineNo">867</span> * @param sourceOffset offset in the source buffer<a name="line.867"></a> |
| <span class="sourceLineNo">868</span> * @param length how many bytes to copy<a name="line.868"></a> |
| <span class="sourceLineNo">869</span> */<a name="line.869"></a> |
| <span class="sourceLineNo">870</span> public static void copyFromBufferToBuffer(ByteBuffer in, ByteBuffer out, int sourceOffset,<a name="line.870"></a> |
| <span class="sourceLineNo">871</span> int length) {<a name="line.871"></a> |
| <span class="sourceLineNo">872</span> if (in.hasArray() && out.hasArray()) {<a name="line.872"></a> |
| <span class="sourceLineNo">873</span> System.arraycopy(in.array(), sourceOffset + in.arrayOffset(), out.array(),<a name="line.873"></a> |
| <span class="sourceLineNo">874</span> out.position() + out.arrayOffset(), length);<a name="line.874"></a> |
| <span class="sourceLineNo">875</span> skip(out, length);<a name="line.875"></a> |
| <span class="sourceLineNo">876</span> } else if (UNSAFE_AVAIL) {<a name="line.876"></a> |
| <span class="sourceLineNo">877</span> UnsafeAccess.copy(in, sourceOffset, out, out.position(), length);<a name="line.877"></a> |
| <span class="sourceLineNo">878</span> skip(out, length);<a name="line.878"></a> |
| <span class="sourceLineNo">879</span> } else {<a name="line.879"></a> |
| <span class="sourceLineNo">880</span> ByteBuffer inDup = in.duplicate();<a name="line.880"></a> |
| <span class="sourceLineNo">881</span> inDup.position(sourceOffset).limit(sourceOffset + length);<a name="line.881"></a> |
| <span class="sourceLineNo">882</span> out.put(inDup);<a name="line.882"></a> |
| <span class="sourceLineNo">883</span> }<a name="line.883"></a> |
| <span class="sourceLineNo">884</span> }<a name="line.884"></a> |
| <span class="sourceLineNo">885</span><a name="line.885"></a> |
| <span class="sourceLineNo">886</span> /**<a name="line.886"></a> |
| <span class="sourceLineNo">887</span> * Find length of common prefix in two arrays.<a name="line.887"></a> |
| <span class="sourceLineNo">888</span> * @param left Array to be compared.<a name="line.888"></a> |
| <span class="sourceLineNo">889</span> * @param leftOffset Offset in left array.<a name="line.889"></a> |
| <span class="sourceLineNo">890</span> * @param leftLength Length of left array.<a name="line.890"></a> |
| <span class="sourceLineNo">891</span> * @param right Array to be compared.<a name="line.891"></a> |
| <span class="sourceLineNo">892</span> * @param rightOffset Offset in right array.<a name="line.892"></a> |
| <span class="sourceLineNo">893</span> * @param rightLength Length of right array.<a name="line.893"></a> |
| <span class="sourceLineNo">894</span> */<a name="line.894"></a> |
| <span class="sourceLineNo">895</span> public static int findCommonPrefix(byte[] left, int leftOffset, int leftLength, byte[] right,<a name="line.895"></a> |
| <span class="sourceLineNo">896</span> int rightOffset, int rightLength) {<a name="line.896"></a> |
| <span class="sourceLineNo">897</span> return Bytes.findCommonPrefix(left, right, leftLength, rightLength, leftOffset, rightOffset);<a name="line.897"></a> |
| <span class="sourceLineNo">898</span> }<a name="line.898"></a> |
| <span class="sourceLineNo">899</span><a name="line.899"></a> |
| <span class="sourceLineNo">900</span> /**<a name="line.900"></a> |
| <span class="sourceLineNo">901</span> * Find length of common prefix in two arrays.<a name="line.901"></a> |
| <span class="sourceLineNo">902</span> * @param left ByteBuffer to be compared.<a name="line.902"></a> |
| <span class="sourceLineNo">903</span> * @param leftOffset Offset in left ByteBuffer.<a name="line.903"></a> |
| <span class="sourceLineNo">904</span> * @param leftLength Length of left ByteBuffer.<a name="line.904"></a> |
| <span class="sourceLineNo">905</span> * @param right ByteBuffer to be compared.<a name="line.905"></a> |
| <span class="sourceLineNo">906</span> * @param rightOffset Offset in right ByteBuffer.<a name="line.906"></a> |
| <span class="sourceLineNo">907</span> * @param rightLength Length of right ByteBuffer.<a name="line.907"></a> |
| <span class="sourceLineNo">908</span> */<a name="line.908"></a> |
| <span class="sourceLineNo">909</span> public static int findCommonPrefix(ByteBuffer left, int leftOffset, int leftLength,<a name="line.909"></a> |
| <span class="sourceLineNo">910</span> ByteBuffer right, int rightOffset, int rightLength) {<a name="line.910"></a> |
| <span class="sourceLineNo">911</span> return CommonPrefixerHolder.BEST_COMMON_PREFIXER.findCommonPrefix(left, leftOffset, leftLength,<a name="line.911"></a> |
| <span class="sourceLineNo">912</span> right, rightOffset, rightLength);<a name="line.912"></a> |
| <span class="sourceLineNo">913</span> }<a name="line.913"></a> |
| <span class="sourceLineNo">914</span><a name="line.914"></a> |
| <span class="sourceLineNo">915</span> /**<a name="line.915"></a> |
| <span class="sourceLineNo">916</span> * Find length of common prefix in two arrays.<a name="line.916"></a> |
| <span class="sourceLineNo">917</span> * @param left ByteBuffer to be compared.<a name="line.917"></a> |
| <span class="sourceLineNo">918</span> * @param leftOffset Offset in left ByteBuffer.<a name="line.918"></a> |
| <span class="sourceLineNo">919</span> * @param leftLength Length of left ByteBuffer.<a name="line.919"></a> |
| <span class="sourceLineNo">920</span> * @param right Array to be compared<a name="line.920"></a> |
| <span class="sourceLineNo">921</span> * @param rightOffset Offset in right Array.<a name="line.921"></a> |
| <span class="sourceLineNo">922</span> * @param rightLength Length of right Array.<a name="line.922"></a> |
| <span class="sourceLineNo">923</span> */<a name="line.923"></a> |
| <span class="sourceLineNo">924</span> public static int findCommonPrefix(ByteBuffer left, int leftOffset, int leftLength, byte[] right,<a name="line.924"></a> |
| <span class="sourceLineNo">925</span> int rightOffset, int rightLength) {<a name="line.925"></a> |
| <span class="sourceLineNo">926</span> return CommonPrefixerHolder.BEST_COMMON_PREFIXER.findCommonPrefix(left, leftOffset, leftLength,<a name="line.926"></a> |
| <span class="sourceLineNo">927</span> right, rightOffset, rightLength);<a name="line.927"></a> |
| <span class="sourceLineNo">928</span> }<a name="line.928"></a> |
| <span class="sourceLineNo">929</span><a name="line.929"></a> |
| <span class="sourceLineNo">930</span> /**<a name="line.930"></a> |
| <span class="sourceLineNo">931</span> * Check whether two parts in the same buffer are equal.<a name="line.931"></a> |
| <span class="sourceLineNo">932</span> * @param buffer In which buffer there are parts<a name="line.932"></a> |
| <span class="sourceLineNo">933</span> * @param offsetLeft Beginning of first part.<a name="line.933"></a> |
| <span class="sourceLineNo">934</span> * @param lengthLeft Length of the first part.<a name="line.934"></a> |
| <span class="sourceLineNo">935</span> * @param offsetRight Beginning of the second part.<a name="line.935"></a> |
| <span class="sourceLineNo">936</span> * @param lengthRight Length of the second part.<a name="line.936"></a> |
| <span class="sourceLineNo">937</span> * @return True if equal<a name="line.937"></a> |
| <span class="sourceLineNo">938</span> */<a name="line.938"></a> |
| <span class="sourceLineNo">939</span> public static boolean arePartsEqual(ByteBuffer buffer, int offsetLeft, int lengthLeft,<a name="line.939"></a> |
| <span class="sourceLineNo">940</span> int offsetRight, int lengthRight) {<a name="line.940"></a> |
| <span class="sourceLineNo">941</span> if (lengthLeft != lengthRight) {<a name="line.941"></a> |
| <span class="sourceLineNo">942</span> return false;<a name="line.942"></a> |
| <span class="sourceLineNo">943</span> }<a name="line.943"></a> |
| <span class="sourceLineNo">944</span><a name="line.944"></a> |
| <span class="sourceLineNo">945</span> if (buffer.hasArray()) {<a name="line.945"></a> |
| <span class="sourceLineNo">946</span> return 0 == Bytes.compareTo(buffer.array(), buffer.arrayOffset() + offsetLeft, lengthLeft,<a name="line.946"></a> |
| <span class="sourceLineNo">947</span> buffer.array(), buffer.arrayOffset() + offsetRight, lengthRight);<a name="line.947"></a> |
| <span class="sourceLineNo">948</span> }<a name="line.948"></a> |
| <span class="sourceLineNo">949</span><a name="line.949"></a> |
| <span class="sourceLineNo">950</span> for (int i = 0; i < lengthRight; ++i) {<a name="line.950"></a> |
| <span class="sourceLineNo">951</span> if (buffer.get(offsetLeft + i) != buffer.get(offsetRight + i)) {<a name="line.951"></a> |
| <span class="sourceLineNo">952</span> return false;<a name="line.952"></a> |
| <span class="sourceLineNo">953</span> }<a name="line.953"></a> |
| <span class="sourceLineNo">954</span> }<a name="line.954"></a> |
| <span class="sourceLineNo">955</span> return true;<a name="line.955"></a> |
| <span class="sourceLineNo">956</span> }<a name="line.956"></a> |
| <span class="sourceLineNo">957</span><a name="line.957"></a> |
| <span class="sourceLineNo">958</span> /**<a name="line.958"></a> |
| <span class="sourceLineNo">959</span> * Increment position in buffer.<a name="line.959"></a> |
| <span class="sourceLineNo">960</span> * @param buffer In this buffer.<a name="line.960"></a> |
| <span class="sourceLineNo">961</span> * @param length By that many bytes.<a name="line.961"></a> |
| <span class="sourceLineNo">962</span> */<a name="line.962"></a> |
| <span class="sourceLineNo">963</span> public static void skip(ByteBuffer buffer, int length) {<a name="line.963"></a> |
| <span class="sourceLineNo">964</span> buffer.position(buffer.position() + length);<a name="line.964"></a> |
| <span class="sourceLineNo">965</span> }<a name="line.965"></a> |
| <span class="sourceLineNo">966</span><a name="line.966"></a> |
| <span class="sourceLineNo">967</span> public static void extendLimit(ByteBuffer buffer, int numBytes) {<a name="line.967"></a> |
| <span class="sourceLineNo">968</span> buffer.limit(buffer.limit() + numBytes);<a name="line.968"></a> |
| <span class="sourceLineNo">969</span> }<a name="line.969"></a> |
| <span class="sourceLineNo">970</span><a name="line.970"></a> |
| <span class="sourceLineNo">971</span> /**<a name="line.971"></a> |
| <span class="sourceLineNo">972</span> * Copy the bytes from position to limit into a new byte[] of the exact length and sets the<a name="line.972"></a> |
| <span class="sourceLineNo">973</span> * position and limit back to their original values (though not thread safe).<a name="line.973"></a> |
| <span class="sourceLineNo">974</span> * @param buffer copy from here<a name="line.974"></a> |
| <span class="sourceLineNo">975</span> * @param startPosition put buffer.get(startPosition) into byte[0]<a name="line.975"></a> |
| <span class="sourceLineNo">976</span> * @return a new byte[] containing the bytes in the specified range<a name="line.976"></a> |
| <span class="sourceLineNo">977</span> */<a name="line.977"></a> |
| <span class="sourceLineNo">978</span> public static byte[] toBytes(ByteBuffer buffer, int startPosition) {<a name="line.978"></a> |
| <span class="sourceLineNo">979</span> int originalPosition = buffer.position();<a name="line.979"></a> |
| <span class="sourceLineNo">980</span> byte[] output = new byte[buffer.limit() - startPosition];<a name="line.980"></a> |
| <span class="sourceLineNo">981</span> buffer.position(startPosition);<a name="line.981"></a> |
| <span class="sourceLineNo">982</span> buffer.get(output);<a name="line.982"></a> |
| <span class="sourceLineNo">983</span> buffer.position(originalPosition);<a name="line.983"></a> |
| <span class="sourceLineNo">984</span> return output;<a name="line.984"></a> |
| <span class="sourceLineNo">985</span> }<a name="line.985"></a> |
| <span class="sourceLineNo">986</span><a name="line.986"></a> |
| <span class="sourceLineNo">987</span> /**<a name="line.987"></a> |
| <span class="sourceLineNo">988</span> * Copy the given number of bytes from specified offset into a new byte[]<a name="line.988"></a> |
| <span class="sourceLineNo">989</span> * @param buffer input bytebuffer to read<a name="line.989"></a> |
| <span class="sourceLineNo">990</span> * @param offset input offset where Bytes are<a name="line.990"></a> |
| <span class="sourceLineNo">991</span> * @param length the number of bytes to read<a name="line.991"></a> |
| <span class="sourceLineNo">992</span> * @return a new byte[] containing the bytes in the specified range<a name="line.992"></a> |
| <span class="sourceLineNo">993</span> */<a name="line.993"></a> |
| <span class="sourceLineNo">994</span> public static byte[] toBytes(ByteBuffer buffer, int offset, int length) {<a name="line.994"></a> |
| <span class="sourceLineNo">995</span> byte[] output = new byte[length];<a name="line.995"></a> |
| <span class="sourceLineNo">996</span> for (int i = 0; i < length; i++) {<a name="line.996"></a> |
| <span class="sourceLineNo">997</span> output[i] = buffer.get(offset + i);<a name="line.997"></a> |
| <span class="sourceLineNo">998</span> }<a name="line.998"></a> |
| <span class="sourceLineNo">999</span> return output;<a name="line.999"></a> |
| <span class="sourceLineNo">1000</span> }<a name="line.1000"></a> |
| <span class="sourceLineNo">1001</span><a name="line.1001"></a> |
| <span class="sourceLineNo">1002</span> public static boolean equals(ByteBuffer buf1, int o1, int l1, ByteBuffer buf2, int o2, int l2) {<a name="line.1002"></a> |
| <span class="sourceLineNo">1003</span> if ((l1 == 0) || (l2 == 0)) {<a name="line.1003"></a> |
| <span class="sourceLineNo">1004</span> // both 0 length, return true, or else false<a name="line.1004"></a> |
| <span class="sourceLineNo">1005</span> return l1 == l2;<a name="line.1005"></a> |
| <span class="sourceLineNo">1006</span> }<a name="line.1006"></a> |
| <span class="sourceLineNo">1007</span> // Since we're often comparing adjacent sorted data,<a name="line.1007"></a> |
| <span class="sourceLineNo">1008</span> // it's usual to have equal arrays except for the very last byte<a name="line.1008"></a> |
| <span class="sourceLineNo">1009</span> // so check that first<a name="line.1009"></a> |
| <span class="sourceLineNo">1010</span> if (toByte(buf1, o1 + l1 - 1) != toByte(buf2, o2 + l2 - 1)) {<a name="line.1010"></a> |
| <span class="sourceLineNo">1011</span> return false;<a name="line.1011"></a> |
| <span class="sourceLineNo">1012</span> }<a name="line.1012"></a> |
| <span class="sourceLineNo">1013</span> return compareTo(buf1, o1, l1, buf2, o2, l2) == 0;<a name="line.1013"></a> |
| <span class="sourceLineNo">1014</span> }<a name="line.1014"></a> |
| <span class="sourceLineNo">1015</span><a name="line.1015"></a> |
| <span class="sourceLineNo">1016</span> /**<a name="line.1016"></a> |
| <span class="sourceLineNo">1017</span> * ByteBuffer to hash offset to start from length to hash<a name="line.1017"></a> |
| <span class="sourceLineNo">1018</span> */<a name="line.1018"></a> |
| <span class="sourceLineNo">1019</span> public static int hashCode(ByteBuffer buf, int offset, int length) {<a name="line.1019"></a> |
| <span class="sourceLineNo">1020</span> int hash = 1;<a name="line.1020"></a> |
| <span class="sourceLineNo">1021</span> for (int i = offset; i < offset + length; i++) {<a name="line.1021"></a> |
| <span class="sourceLineNo">1022</span> hash = (31 * hash) + (int) toByte(buf, i);<a name="line.1022"></a> |
| <span class="sourceLineNo">1023</span> }<a name="line.1023"></a> |
| <span class="sourceLineNo">1024</span> return hash;<a name="line.1024"></a> |
| <span class="sourceLineNo">1025</span> }<a name="line.1025"></a> |
| <span class="sourceLineNo">1026</span><a name="line.1026"></a> |
| <span class="sourceLineNo">1027</span> public static int compareTo(ByteBuffer buf1, int o1, int l1, ByteBuffer buf2, int o2, int l2) {<a name="line.1027"></a> |
| <span class="sourceLineNo">1028</span> return ComparerHolder.BEST_COMPARER.compareTo(buf1, o1, l1, buf2, o2, l2);<a name="line.1028"></a> |
| <span class="sourceLineNo">1029</span> }<a name="line.1029"></a> |
| <span class="sourceLineNo">1030</span><a name="line.1030"></a> |
| <span class="sourceLineNo">1031</span> public static boolean equals(ByteBuffer buf1, int o1, int l1, byte[] buf2, int o2, int l2) {<a name="line.1031"></a> |
| <span class="sourceLineNo">1032</span> if ((l1 == 0) || (l2 == 0)) {<a name="line.1032"></a> |
| <span class="sourceLineNo">1033</span> // both 0 length, return true, or else false<a name="line.1033"></a> |
| <span class="sourceLineNo">1034</span> return l1 == l2;<a name="line.1034"></a> |
| <span class="sourceLineNo">1035</span> }<a name="line.1035"></a> |
| <span class="sourceLineNo">1036</span> // Since we're often comparing adjacent sorted data,<a name="line.1036"></a> |
| <span class="sourceLineNo">1037</span> // it's usual to have equal arrays except for the very last byte<a name="line.1037"></a> |
| <span class="sourceLineNo">1038</span> // so check that first<a name="line.1038"></a> |
| <span class="sourceLineNo">1039</span> if (toByte(buf1, o1 + l1 - 1) != buf2[o2 + l2 - 1]) {<a name="line.1039"></a> |
| <span class="sourceLineNo">1040</span> return false;<a name="line.1040"></a> |
| <span class="sourceLineNo">1041</span> }<a name="line.1041"></a> |
| <span class="sourceLineNo">1042</span> return compareTo(buf1, o1, l1, buf2, o2, l2) == 0;<a name="line.1042"></a> |
| <span class="sourceLineNo">1043</span> }<a name="line.1043"></a> |
| <span class="sourceLineNo">1044</span><a name="line.1044"></a> |
| <span class="sourceLineNo">1045</span> // The below two methods show up in lots of places. Versions of them in commons util and in<a name="line.1045"></a> |
| <span class="sourceLineNo">1046</span> // Cassandra. In guava too? They are copied from ByteBufferUtils. They are here as static<a name="line.1046"></a> |
| <span class="sourceLineNo">1047</span> // privates. Seems to make code smaller and make Hotspot happier (comes of compares and study<a name="line.1047"></a> |
| <span class="sourceLineNo">1048</span> // of compiled code via jitwatch).<a name="line.1048"></a> |
| <span class="sourceLineNo">1049</span><a name="line.1049"></a> |
| <span class="sourceLineNo">1050</span> public static int compareTo(byte[] buf1, int o1, int l1, ByteBuffer buf2, int o2, int l2) {<a name="line.1050"></a> |
| <span class="sourceLineNo">1051</span> return ComparerHolder.BEST_COMPARER.compareTo(buf1, o1, l1, buf2, o2, l2);<a name="line.1051"></a> |
| <span class="sourceLineNo">1052</span> }<a name="line.1052"></a> |
| <span class="sourceLineNo">1053</span><a name="line.1053"></a> |
| <span class="sourceLineNo">1054</span> public static int compareTo(ByteBuffer buf1, int o1, int l1, byte[] buf2, int o2, int l2) {<a name="line.1054"></a> |
| <span class="sourceLineNo">1055</span> return compareTo(buf2, o2, l2, buf1, o1, l1) * -1;<a name="line.1055"></a> |
| <span class="sourceLineNo">1056</span> }<a name="line.1056"></a> |
| <span class="sourceLineNo">1057</span><a name="line.1057"></a> |
| <span class="sourceLineNo">1058</span> static int compareToUnsafe(Object obj1, long o1, int l1, Object obj2, long o2, int l2) {<a name="line.1058"></a> |
| <span class="sourceLineNo">1059</span> final int stride = 8;<a name="line.1059"></a> |
| <span class="sourceLineNo">1060</span> final int minLength = Math.min(l1, l2);<a name="line.1060"></a> |
| <span class="sourceLineNo">1061</span> int strideLimit = minLength & ~(stride - 1);<a name="line.1061"></a> |
| <span class="sourceLineNo">1062</span> int i;<a name="line.1062"></a> |
| <span class="sourceLineNo">1063</span><a name="line.1063"></a> |
| <span class="sourceLineNo">1064</span> /*<a name="line.1064"></a> |
| <span class="sourceLineNo">1065</span> * Compare 8 bytes at a time. Benchmarking shows comparing 8 bytes at a time is no slower than<a name="line.1065"></a> |
| <span class="sourceLineNo">1066</span> * comparing 4 bytes at a time even on 32-bit. On the other hand, it is substantially faster on<a name="line.1066"></a> |
| <span class="sourceLineNo">1067</span> * 64-bit.<a name="line.1067"></a> |
| <span class="sourceLineNo">1068</span> */<a name="line.1068"></a> |
| <span class="sourceLineNo">1069</span> for (i = 0; i < strideLimit; i += stride) {<a name="line.1069"></a> |
| <span class="sourceLineNo">1070</span> long lw = HBasePlatformDependent.getLong(obj1, o1 + (long) i);<a name="line.1070"></a> |
| <span class="sourceLineNo">1071</span> long rw = HBasePlatformDependent.getLong(obj2, o2 + (long) i);<a name="line.1071"></a> |
| <span class="sourceLineNo">1072</span> if (lw != rw) {<a name="line.1072"></a> |
| <span class="sourceLineNo">1073</span> if (!UnsafeAccess.LITTLE_ENDIAN) {<a name="line.1073"></a> |
| <span class="sourceLineNo">1074</span> return ((lw + Long.MIN_VALUE) < (rw + Long.MIN_VALUE)) ? -1 : 1;<a name="line.1074"></a> |
| <span class="sourceLineNo">1075</span> }<a name="line.1075"></a> |
| <span class="sourceLineNo">1076</span><a name="line.1076"></a> |
| <span class="sourceLineNo">1077</span> /*<a name="line.1077"></a> |
| <span class="sourceLineNo">1078</span> * We want to compare only the first index where left[index] != right[index]. This<a name="line.1078"></a> |
| <span class="sourceLineNo">1079</span> * corresponds to the least significant nonzero byte in lw ^ rw, since lw and rw are<a name="line.1079"></a> |
| <span class="sourceLineNo">1080</span> * little-endian. Long.numberOfTrailingZeros(diff) tells us the least significant nonzero<a name="line.1080"></a> |
| <span class="sourceLineNo">1081</span> * bit, and zeroing out the first three bits of L.nTZ gives us the shift to get that least<a name="line.1081"></a> |
| <span class="sourceLineNo">1082</span> * significant nonzero byte. This comparison logic is based on UnsignedBytes from guava v21<a name="line.1082"></a> |
| <span class="sourceLineNo">1083</span> */<a name="line.1083"></a> |
| <span class="sourceLineNo">1084</span> int n = Long.numberOfTrailingZeros(lw ^ rw) & ~0x7;<a name="line.1084"></a> |
| <span class="sourceLineNo">1085</span> return ((int) ((lw >>> n) & 0xFF)) - ((int) ((rw >>> n) & 0xFF));<a name="line.1085"></a> |
| <span class="sourceLineNo">1086</span> }<a name="line.1086"></a> |
| <span class="sourceLineNo">1087</span> }<a name="line.1087"></a> |
| <span class="sourceLineNo">1088</span><a name="line.1088"></a> |
| <span class="sourceLineNo">1089</span> // The epilogue to cover the last (minLength % stride) elements.<a name="line.1089"></a> |
| <span class="sourceLineNo">1090</span> for (; i < minLength; i++) {<a name="line.1090"></a> |
| <span class="sourceLineNo">1091</span> int il = (HBasePlatformDependent.getByte(obj1, o1 + i) & 0xFF);<a name="line.1091"></a> |
| <span class="sourceLineNo">1092</span> int ir = (HBasePlatformDependent.getByte(obj2, o2 + i) & 0xFF);<a name="line.1092"></a> |
| <span class="sourceLineNo">1093</span> if (il != ir) {<a name="line.1093"></a> |
| <span class="sourceLineNo">1094</span> return il - ir;<a name="line.1094"></a> |
| <span class="sourceLineNo">1095</span> }<a name="line.1095"></a> |
| <span class="sourceLineNo">1096</span> }<a name="line.1096"></a> |
| <span class="sourceLineNo">1097</span> return l1 - l2;<a name="line.1097"></a> |
| <span class="sourceLineNo">1098</span> }<a name="line.1098"></a> |
| <span class="sourceLineNo">1099</span><a name="line.1099"></a> |
| <span class="sourceLineNo">1100</span> static int findCommonPrefixUnsafe(Object left, long leftOffset, int leftLength, Object right,<a name="line.1100"></a> |
| <span class="sourceLineNo">1101</span> long rightOffset, int rightLength) {<a name="line.1101"></a> |
| <span class="sourceLineNo">1102</span> final int stride = 8;<a name="line.1102"></a> |
| <span class="sourceLineNo">1103</span> final int minLength = Math.min(leftLength, rightLength);<a name="line.1103"></a> |
| <span class="sourceLineNo">1104</span> int strideLimit = minLength & ~(stride - 1);<a name="line.1104"></a> |
| <span class="sourceLineNo">1105</span> int result = 0;<a name="line.1105"></a> |
| <span class="sourceLineNo">1106</span> int i;<a name="line.1106"></a> |
| <span class="sourceLineNo">1107</span><a name="line.1107"></a> |
| <span class="sourceLineNo">1108</span> for (i = 0; i < strideLimit; i += stride) {<a name="line.1108"></a> |
| <span class="sourceLineNo">1109</span> long lw = HBasePlatformDependent.getLong(left, leftOffset + (long) i);<a name="line.1109"></a> |
| <span class="sourceLineNo">1110</span> long rw = HBasePlatformDependent.getLong(right, rightOffset + (long) i);<a name="line.1110"></a> |
| <span class="sourceLineNo">1111</span><a name="line.1111"></a> |
| <span class="sourceLineNo">1112</span> if (lw != rw) {<a name="line.1112"></a> |
| <span class="sourceLineNo">1113</span> if (!UnsafeAccess.LITTLE_ENDIAN) {<a name="line.1113"></a> |
| <span class="sourceLineNo">1114</span> return result + (Long.numberOfLeadingZeros(lw ^ rw) / Bytes.SIZEOF_LONG);<a name="line.1114"></a> |
| <span class="sourceLineNo">1115</span> } else {<a name="line.1115"></a> |
| <span class="sourceLineNo">1116</span> return result + (Long.numberOfTrailingZeros(lw ^ rw) / Bytes.SIZEOF_LONG);<a name="line.1116"></a> |
| <span class="sourceLineNo">1117</span> }<a name="line.1117"></a> |
| <span class="sourceLineNo">1118</span> } else {<a name="line.1118"></a> |
| <span class="sourceLineNo">1119</span> result += Bytes.SIZEOF_LONG;<a name="line.1119"></a> |
| <span class="sourceLineNo">1120</span> }<a name="line.1120"></a> |
| <span class="sourceLineNo">1121</span> }<a name="line.1121"></a> |
| <span class="sourceLineNo">1122</span><a name="line.1122"></a> |
| <span class="sourceLineNo">1123</span> // The epilogue to cover the last (minLength % stride) elements.<a name="line.1123"></a> |
| <span class="sourceLineNo">1124</span> for (; i < minLength; i++) {<a name="line.1124"></a> |
| <span class="sourceLineNo">1125</span> byte il = HBasePlatformDependent.getByte(left, leftOffset + i);<a name="line.1125"></a> |
| <span class="sourceLineNo">1126</span> byte ir = HBasePlatformDependent.getByte(right, rightOffset + i);<a name="line.1126"></a> |
| <span class="sourceLineNo">1127</span> if (il != ir) {<a name="line.1127"></a> |
| <span class="sourceLineNo">1128</span> return result;<a name="line.1128"></a> |
| <span class="sourceLineNo">1129</span> } else {<a name="line.1129"></a> |
| <span class="sourceLineNo">1130</span> result++;<a name="line.1130"></a> |
| <span class="sourceLineNo">1131</span> }<a name="line.1131"></a> |
| <span class="sourceLineNo">1132</span> }<a name="line.1132"></a> |
| <span class="sourceLineNo">1133</span><a name="line.1133"></a> |
| <span class="sourceLineNo">1134</span> return result;<a name="line.1134"></a> |
| <span class="sourceLineNo">1135</span> }<a name="line.1135"></a> |
| <span class="sourceLineNo">1136</span><a name="line.1136"></a> |
| <span class="sourceLineNo">1137</span> /**<a name="line.1137"></a> |
| <span class="sourceLineNo">1138</span> * Reads a short value at the given buffer's offset.<a name="line.1138"></a> |
| <span class="sourceLineNo">1139</span> * @param buffer input byte buffer to read<a name="line.1139"></a> |
| <span class="sourceLineNo">1140</span> * @param offset input offset where short is<a name="line.1140"></a> |
| <span class="sourceLineNo">1141</span> * @return short value at offset<a name="line.1141"></a> |
| <span class="sourceLineNo">1142</span> */<a name="line.1142"></a> |
| <span class="sourceLineNo">1143</span> public static short toShort(ByteBuffer buffer, int offset) {<a name="line.1143"></a> |
| <span class="sourceLineNo">1144</span> return ConverterHolder.BEST_CONVERTER.toShort(buffer, offset);<a name="line.1144"></a> |
| <span class="sourceLineNo">1145</span> }<a name="line.1145"></a> |
| <span class="sourceLineNo">1146</span><a name="line.1146"></a> |
| <span class="sourceLineNo">1147</span> /**<a name="line.1147"></a> |
| <span class="sourceLineNo">1148</span> * Reads an int value at the given buffer's current position. Also advances the buffer's position<a name="line.1148"></a> |
| <span class="sourceLineNo">1149</span> */<a name="line.1149"></a> |
| <span class="sourceLineNo">1150</span> public static int toInt(ByteBuffer buffer) {<a name="line.1150"></a> |
| <span class="sourceLineNo">1151</span> return ConverterHolder.BEST_CONVERTER.toInt(buffer);<a name="line.1151"></a> |
| <span class="sourceLineNo">1152</span> }<a name="line.1152"></a> |
| <span class="sourceLineNo">1153</span><a name="line.1153"></a> |
| <span class="sourceLineNo">1154</span> /**<a name="line.1154"></a> |
| <span class="sourceLineNo">1155</span> * Reads an int value at the given buffer's offset.<a name="line.1155"></a> |
| <span class="sourceLineNo">1156</span> * @param buffer input byte buffer to read<a name="line.1156"></a> |
| <span class="sourceLineNo">1157</span> * @param offset input offset where int is<a name="line.1157"></a> |
| <span class="sourceLineNo">1158</span> * @return int value at offset<a name="line.1158"></a> |
| <span class="sourceLineNo">1159</span> */<a name="line.1159"></a> |
| <span class="sourceLineNo">1160</span> public static int toInt(ByteBuffer buffer, int offset) {<a name="line.1160"></a> |
| <span class="sourceLineNo">1161</span> return ConverterHolder.BEST_CONVERTER.toInt(buffer, offset);<a name="line.1161"></a> |
| <span class="sourceLineNo">1162</span> }<a name="line.1162"></a> |
| <span class="sourceLineNo">1163</span><a name="line.1163"></a> |
| <span class="sourceLineNo">1164</span> /**<a name="line.1164"></a> |
| <span class="sourceLineNo">1165</span> * Converts a ByteBuffer to an int value<a name="line.1165"></a> |
| <span class="sourceLineNo">1166</span> * @param buf The ByteBuffer<a name="line.1166"></a> |
| <span class="sourceLineNo">1167</span> * @param offset Offset to int value<a name="line.1167"></a> |
| <span class="sourceLineNo">1168</span> * @param length Number of bytes used to store the int value.<a name="line.1168"></a> |
| <span class="sourceLineNo">1169</span> * @return the int value if there's not enough bytes left in the buffer after the given offset<a name="line.1169"></a> |
| <span class="sourceLineNo">1170</span> */<a name="line.1170"></a> |
| <span class="sourceLineNo">1171</span> public static int readAsInt(ByteBuffer buf, int offset, final int length) {<a name="line.1171"></a> |
| <span class="sourceLineNo">1172</span> if (offset + length > buf.limit()) {<a name="line.1172"></a> |
| <span class="sourceLineNo">1173</span> throw new IllegalArgumentException("offset (" + offset + ") + length (" + length<a name="line.1173"></a> |
| <span class="sourceLineNo">1174</span> + ") exceed the" + " limit of the buffer: " + buf.limit());<a name="line.1174"></a> |
| <span class="sourceLineNo">1175</span> }<a name="line.1175"></a> |
| <span class="sourceLineNo">1176</span> int n = 0;<a name="line.1176"></a> |
| <span class="sourceLineNo">1177</span> for (int i = offset; i < (offset + length); i++) {<a name="line.1177"></a> |
| <span class="sourceLineNo">1178</span> n <<= 8;<a name="line.1178"></a> |
| <span class="sourceLineNo">1179</span> n ^= toByte(buf, i) & 0xFF;<a name="line.1179"></a> |
| <span class="sourceLineNo">1180</span> }<a name="line.1180"></a> |
| <span class="sourceLineNo">1181</span> return n;<a name="line.1181"></a> |
| <span class="sourceLineNo">1182</span> }<a name="line.1182"></a> |
| <span class="sourceLineNo">1183</span><a name="line.1183"></a> |
| <span class="sourceLineNo">1184</span> /**<a name="line.1184"></a> |
| <span class="sourceLineNo">1185</span> * Reads a long value at the given buffer's offset.<a name="line.1185"></a> |
| <span class="sourceLineNo">1186</span> * @param buffer input byte buffer to read<a name="line.1186"></a> |
| <span class="sourceLineNo">1187</span> * @param offset input offset where Long is<a name="line.1187"></a> |
| <span class="sourceLineNo">1188</span> * @return long value at offset<a name="line.1188"></a> |
| <span class="sourceLineNo">1189</span> */<a name="line.1189"></a> |
| <span class="sourceLineNo">1190</span> public static long toLong(ByteBuffer buffer, int offset) {<a name="line.1190"></a> |
| <span class="sourceLineNo">1191</span> return ConverterHolder.BEST_CONVERTER.toLong(buffer, offset);<a name="line.1191"></a> |
| <span class="sourceLineNo">1192</span> }<a name="line.1192"></a> |
| <span class="sourceLineNo">1193</span><a name="line.1193"></a> |
| <span class="sourceLineNo">1194</span> /**<a name="line.1194"></a> |
| <span class="sourceLineNo">1195</span> * Put an int value out to the given ByteBuffer's current position in big-endian format. This also<a name="line.1195"></a> |
| <span class="sourceLineNo">1196</span> * advances the position in buffer by int size.<a name="line.1196"></a> |
| <span class="sourceLineNo">1197</span> * @param buffer the ByteBuffer to write to<a name="line.1197"></a> |
| <span class="sourceLineNo">1198</span> * @param val int to write out<a name="line.1198"></a> |
| <span class="sourceLineNo">1199</span> */<a name="line.1199"></a> |
| <span class="sourceLineNo">1200</span> public static void putInt(ByteBuffer buffer, int val) {<a name="line.1200"></a> |
| <span class="sourceLineNo">1201</span> ConverterHolder.BEST_CONVERTER.putInt(buffer, val);<a name="line.1201"></a> |
| <span class="sourceLineNo">1202</span> }<a name="line.1202"></a> |
| <span class="sourceLineNo">1203</span><a name="line.1203"></a> |
| <span class="sourceLineNo">1204</span> public static int putInt(ByteBuffer buffer, int index, int val) {<a name="line.1204"></a> |
| <span class="sourceLineNo">1205</span> return ConverterHolder.BEST_CONVERTER.putInt(buffer, index, val);<a name="line.1205"></a> |
| <span class="sourceLineNo">1206</span> }<a name="line.1206"></a> |
| <span class="sourceLineNo">1207</span><a name="line.1207"></a> |
| <span class="sourceLineNo">1208</span> /**<a name="line.1208"></a> |
| <span class="sourceLineNo">1209</span> * Reads a double value at the given buffer's offset.<a name="line.1209"></a> |
| <span class="sourceLineNo">1210</span> * @param buffer input byte buffer to read<a name="line.1210"></a> |
| <span class="sourceLineNo">1211</span> * @param offset offset where double is<a name="line.1211"></a> |
| <span class="sourceLineNo">1212</span> * @return double value at offset<a name="line.1212"></a> |
| <span class="sourceLineNo">1213</span> */<a name="line.1213"></a> |
| <span class="sourceLineNo">1214</span> public static double toDouble(ByteBuffer buffer, int offset) {<a name="line.1214"></a> |
| <span class="sourceLineNo">1215</span> return Double.longBitsToDouble(toLong(buffer, offset));<a name="line.1215"></a> |
| <span class="sourceLineNo">1216</span> }<a name="line.1216"></a> |
| <span class="sourceLineNo">1217</span><a name="line.1217"></a> |
| <span class="sourceLineNo">1218</span> /**<a name="line.1218"></a> |
| <span class="sourceLineNo">1219</span> * Reads a BigDecimal value at the given buffer's offset.<a name="line.1219"></a> |
| <span class="sourceLineNo">1220</span> * @param buffer input bytebuffer to read<a name="line.1220"></a> |
| <span class="sourceLineNo">1221</span> * @param offset input offset<a name="line.1221"></a> |
| <span class="sourceLineNo">1222</span> * @return BigDecimal value at offset<a name="line.1222"></a> |
| <span class="sourceLineNo">1223</span> */<a name="line.1223"></a> |
| <span class="sourceLineNo">1224</span> public static BigDecimal toBigDecimal(ByteBuffer buffer, int offset, int length) {<a name="line.1224"></a> |
| <span class="sourceLineNo">1225</span> if (buffer == null || length < Bytes.SIZEOF_INT + 1 || (offset + length > buffer.limit())) {<a name="line.1225"></a> |
| <span class="sourceLineNo">1226</span> return null;<a name="line.1226"></a> |
| <span class="sourceLineNo">1227</span> }<a name="line.1227"></a> |
| <span class="sourceLineNo">1228</span><a name="line.1228"></a> |
| <span class="sourceLineNo">1229</span> int scale = toInt(buffer, offset);<a name="line.1229"></a> |
| <span class="sourceLineNo">1230</span> byte[] tcBytes = new byte[length - Bytes.SIZEOF_INT];<a name="line.1230"></a> |
| <span class="sourceLineNo">1231</span> copyFromBufferToArray(tcBytes, buffer, offset + Bytes.SIZEOF_INT, 0, length - Bytes.SIZEOF_INT);<a name="line.1231"></a> |
| <span class="sourceLineNo">1232</span> return new BigDecimal(new BigInteger(tcBytes), scale);<a name="line.1232"></a> |
| <span class="sourceLineNo">1233</span> }<a name="line.1233"></a> |
| <span class="sourceLineNo">1234</span><a name="line.1234"></a> |
| <span class="sourceLineNo">1235</span> /**<a name="line.1235"></a> |
| <span class="sourceLineNo">1236</span> * Put a short value out to the given ByteBuffer's current position in big-endian format. This<a name="line.1236"></a> |
| <span class="sourceLineNo">1237</span> * also advances the position in buffer by short size.<a name="line.1237"></a> |
| <span class="sourceLineNo">1238</span> * @param buffer the ByteBuffer to write to<a name="line.1238"></a> |
| <span class="sourceLineNo">1239</span> * @param val short to write out<a name="line.1239"></a> |
| <span class="sourceLineNo">1240</span> */<a name="line.1240"></a> |
| <span class="sourceLineNo">1241</span> public static void putShort(ByteBuffer buffer, short val) {<a name="line.1241"></a> |
| <span class="sourceLineNo">1242</span> ConverterHolder.BEST_CONVERTER.putShort(buffer, val);<a name="line.1242"></a> |
| <span class="sourceLineNo">1243</span> }<a name="line.1243"></a> |
| <span class="sourceLineNo">1244</span><a name="line.1244"></a> |
| <span class="sourceLineNo">1245</span> public static int putShort(ByteBuffer buffer, int index, short val) {<a name="line.1245"></a> |
| <span class="sourceLineNo">1246</span> return ConverterHolder.BEST_CONVERTER.putShort(buffer, index, val);<a name="line.1246"></a> |
| <span class="sourceLineNo">1247</span> }<a name="line.1247"></a> |
| <span class="sourceLineNo">1248</span><a name="line.1248"></a> |
| <span class="sourceLineNo">1249</span> public static int putAsShort(ByteBuffer buf, int index, int val) {<a name="line.1249"></a> |
| <span class="sourceLineNo">1250</span> buf.put(index + 1, (byte) val);<a name="line.1250"></a> |
| <span class="sourceLineNo">1251</span> val >>= 8;<a name="line.1251"></a> |
| <span class="sourceLineNo">1252</span> buf.put(index, (byte) val);<a name="line.1252"></a> |
| <span class="sourceLineNo">1253</span> return index + Bytes.SIZEOF_SHORT;<a name="line.1253"></a> |
| <span class="sourceLineNo">1254</span> }<a name="line.1254"></a> |
| <span class="sourceLineNo">1255</span><a name="line.1255"></a> |
| <span class="sourceLineNo">1256</span> /**<a name="line.1256"></a> |
| <span class="sourceLineNo">1257</span> * Put a long value out to the given ByteBuffer's current position in big-endian format. This also<a name="line.1257"></a> |
| <span class="sourceLineNo">1258</span> * advances the position in buffer by long size.<a name="line.1258"></a> |
| <span class="sourceLineNo">1259</span> * @param buffer the ByteBuffer to write to<a name="line.1259"></a> |
| <span class="sourceLineNo">1260</span> * @param val long to write out<a name="line.1260"></a> |
| <span class="sourceLineNo">1261</span> */<a name="line.1261"></a> |
| <span class="sourceLineNo">1262</span> public static void putLong(ByteBuffer buffer, long val) {<a name="line.1262"></a> |
| <span class="sourceLineNo">1263</span> ConverterHolder.BEST_CONVERTER.putLong(buffer, val);<a name="line.1263"></a> |
| <span class="sourceLineNo">1264</span> }<a name="line.1264"></a> |
| <span class="sourceLineNo">1265</span><a name="line.1265"></a> |
| <span class="sourceLineNo">1266</span> public static int putLong(ByteBuffer buffer, int index, long val) {<a name="line.1266"></a> |
| <span class="sourceLineNo">1267</span> return ConverterHolder.BEST_CONVERTER.putLong(buffer, index, val);<a name="line.1267"></a> |
| <span class="sourceLineNo">1268</span> }<a name="line.1268"></a> |
| <span class="sourceLineNo">1269</span><a name="line.1269"></a> |
| <span class="sourceLineNo">1270</span> /**<a name="line.1270"></a> |
| <span class="sourceLineNo">1271</span> * Copies the bytes from given array's offset to length part into the given buffer. Puts the bytes<a name="line.1271"></a> |
| <span class="sourceLineNo">1272</span> * to buffer's current position. This also advances the position in the 'out' buffer by 'length'<a name="line.1272"></a> |
| <span class="sourceLineNo">1273</span> * @param out output bytebuffer to copy to<a name="line.1273"></a> |
| <span class="sourceLineNo">1274</span> * @param in input array to copy from<a name="line.1274"></a> |
| <span class="sourceLineNo">1275</span> * @param inOffset input offset to copy from<a name="line.1275"></a> |
| <span class="sourceLineNo">1276</span> * @param length the number of bytes to copy<a name="line.1276"></a> |
| <span class="sourceLineNo">1277</span> */<a name="line.1277"></a> |
| <span class="sourceLineNo">1278</span> public static void copyFromArrayToBuffer(ByteBuffer out, byte[] in, int inOffset, int length) {<a name="line.1278"></a> |
| <span class="sourceLineNo">1279</span> if (out.hasArray()) {<a name="line.1279"></a> |
| <span class="sourceLineNo">1280</span> System.arraycopy(in, inOffset, out.array(), out.arrayOffset() + out.position(), length);<a name="line.1280"></a> |
| <span class="sourceLineNo">1281</span> // Move the position in out by length<a name="line.1281"></a> |
| <span class="sourceLineNo">1282</span> out.position(out.position() + length);<a name="line.1282"></a> |
| <span class="sourceLineNo">1283</span> } else if (UNSAFE_AVAIL) {<a name="line.1283"></a> |
| <span class="sourceLineNo">1284</span> UnsafeAccess.copy(in, inOffset, out, out.position(), length);<a name="line.1284"></a> |
| <span class="sourceLineNo">1285</span> // Move the position in out by length<a name="line.1285"></a> |
| <span class="sourceLineNo">1286</span> out.position(out.position() + length);<a name="line.1286"></a> |
| <span class="sourceLineNo">1287</span> } else {<a name="line.1287"></a> |
| <span class="sourceLineNo">1288</span> out.put(in, inOffset, length);<a name="line.1288"></a> |
| <span class="sourceLineNo">1289</span> }<a name="line.1289"></a> |
| <span class="sourceLineNo">1290</span> }<a name="line.1290"></a> |
| <span class="sourceLineNo">1291</span><a name="line.1291"></a> |
| <span class="sourceLineNo">1292</span> /**<a name="line.1292"></a> |
| <span class="sourceLineNo">1293</span> * Copies bytes from given array's offset to length part into the given buffer. Puts the bytes to<a name="line.1293"></a> |
| <span class="sourceLineNo">1294</span> * buffer's given position. This doesn't affect the position of buffer.<a name="line.1294"></a> |
| <span class="sourceLineNo">1295</span> * @param out output bytebuffer to copy to<a name="line.1295"></a> |
| <span class="sourceLineNo">1296</span> * @param outOffset output buffer offset<a name="line.1296"></a> |
| <span class="sourceLineNo">1297</span> * @param in input array to copy from<a name="line.1297"></a> |
| <span class="sourceLineNo">1298</span> * @param inOffset input offset to copy from<a name="line.1298"></a> |
| <span class="sourceLineNo">1299</span> * @param length the number of bytes to copy<a name="line.1299"></a> |
| <span class="sourceLineNo">1300</span> */<a name="line.1300"></a> |
| <span class="sourceLineNo">1301</span> public static void copyFromArrayToBuffer(ByteBuffer out, int outOffset, byte[] in, int inOffset,<a name="line.1301"></a> |
| <span class="sourceLineNo">1302</span> int length) {<a name="line.1302"></a> |
| <span class="sourceLineNo">1303</span> if (out.hasArray()) {<a name="line.1303"></a> |
| <span class="sourceLineNo">1304</span> System.arraycopy(in, inOffset, out.array(), out.arrayOffset() + outOffset, length);<a name="line.1304"></a> |
| <span class="sourceLineNo">1305</span> } else if (UNSAFE_AVAIL) {<a name="line.1305"></a> |
| <span class="sourceLineNo">1306</span> UnsafeAccess.copy(in, inOffset, out, outOffset, length);<a name="line.1306"></a> |
| <span class="sourceLineNo">1307</span> } else {<a name="line.1307"></a> |
| <span class="sourceLineNo">1308</span> ByteBuffer outDup = out.duplicate();<a name="line.1308"></a> |
| <span class="sourceLineNo">1309</span> outDup.position(outOffset);<a name="line.1309"></a> |
| <span class="sourceLineNo">1310</span> outDup.put(in, inOffset, length);<a name="line.1310"></a> |
| <span class="sourceLineNo">1311</span> }<a name="line.1311"></a> |
| <span class="sourceLineNo">1312</span> }<a name="line.1312"></a> |
| <span class="sourceLineNo">1313</span><a name="line.1313"></a> |
| <span class="sourceLineNo">1314</span> /**<a name="line.1314"></a> |
| <span class="sourceLineNo">1315</span> * Copies specified number of bytes from given offset of 'in' ByteBuffer to the array. This<a name="line.1315"></a> |
| <span class="sourceLineNo">1316</span> * doesn't affect the position of buffer.<a name="line.1316"></a> |
| <span class="sourceLineNo">1317</span> * @param out output array to copy input bytebuffer to<a name="line.1317"></a> |
| <span class="sourceLineNo">1318</span> * @param in input bytebuffer to copy from<a name="line.1318"></a> |
| <span class="sourceLineNo">1319</span> * @param sourceOffset offset of source bytebuffer<a name="line.1319"></a> |
| <span class="sourceLineNo">1320</span> * @param destinationOffset offset of destination array<a name="line.1320"></a> |
| <span class="sourceLineNo">1321</span> * @param length the number of bytes to copy<a name="line.1321"></a> |
| <span class="sourceLineNo">1322</span> */<a name="line.1322"></a> |
| <span class="sourceLineNo">1323</span> public static void copyFromBufferToArray(byte[] out, ByteBuffer in, int sourceOffset,<a name="line.1323"></a> |
| <span class="sourceLineNo">1324</span> int destinationOffset, int length) {<a name="line.1324"></a> |
| <span class="sourceLineNo">1325</span> if (in.hasArray()) {<a name="line.1325"></a> |
| <span class="sourceLineNo">1326</span> System.arraycopy(in.array(), sourceOffset + in.arrayOffset(), out, destinationOffset, length);<a name="line.1326"></a> |
| <span class="sourceLineNo">1327</span> } else if (UNSAFE_AVAIL) {<a name="line.1327"></a> |
| <span class="sourceLineNo">1328</span> UnsafeAccess.copy(in, sourceOffset, out, destinationOffset, length);<a name="line.1328"></a> |
| <span class="sourceLineNo">1329</span> } else {<a name="line.1329"></a> |
| <span class="sourceLineNo">1330</span> ByteBuffer inDup = in.duplicate();<a name="line.1330"></a> |
| <span class="sourceLineNo">1331</span> inDup.position(sourceOffset);<a name="line.1331"></a> |
| <span class="sourceLineNo">1332</span> inDup.get(out, destinationOffset, length);<a name="line.1332"></a> |
| <span class="sourceLineNo">1333</span> }<a name="line.1333"></a> |
| <span class="sourceLineNo">1334</span> }<a name="line.1334"></a> |
| <span class="sourceLineNo">1335</span><a name="line.1335"></a> |
| <span class="sourceLineNo">1336</span> /**<a name="line.1336"></a> |
| <span class="sourceLineNo">1337</span> * Similar to {@link Arrays#copyOfRange(byte[], int, int)}<a name="line.1337"></a> |
| <span class="sourceLineNo">1338</span> * @param original the buffer from which the copy has to happen<a name="line.1338"></a> |
| <span class="sourceLineNo">1339</span> * @param from the starting index<a name="line.1339"></a> |
| <span class="sourceLineNo">1340</span> * @param to the ending index<a name="line.1340"></a> |
| <span class="sourceLineNo">1341</span> * @return a byte[] created out of the copy<a name="line.1341"></a> |
| <span class="sourceLineNo">1342</span> */<a name="line.1342"></a> |
| <span class="sourceLineNo">1343</span> public static byte[] copyOfRange(ByteBuffer original, int from, int to) {<a name="line.1343"></a> |
| <span class="sourceLineNo">1344</span> int newLength = to - from;<a name="line.1344"></a> |
| <span class="sourceLineNo">1345</span> if (newLength < 0) {<a name="line.1345"></a> |
| <span class="sourceLineNo">1346</span> throw new IllegalArgumentException(from + " > " + to);<a name="line.1346"></a> |
| <span class="sourceLineNo">1347</span> }<a name="line.1347"></a> |
| <span class="sourceLineNo">1348</span> byte[] copy = new byte[newLength];<a name="line.1348"></a> |
| <span class="sourceLineNo">1349</span> ByteBufferUtils.copyFromBufferToArray(copy, original, from, 0, newLength);<a name="line.1349"></a> |
| <span class="sourceLineNo">1350</span> return copy;<a name="line.1350"></a> |
| <span class="sourceLineNo">1351</span> }<a name="line.1351"></a> |
| <span class="sourceLineNo">1352</span><a name="line.1352"></a> |
| <span class="sourceLineNo">1353</span> // For testing purpose<a name="line.1353"></a> |
| <span class="sourceLineNo">1354</span> public static String toStringBinary(final ByteBuffer b, int off, int len) {<a name="line.1354"></a> |
| <span class="sourceLineNo">1355</span> StringBuilder result = new StringBuilder();<a name="line.1355"></a> |
| <span class="sourceLineNo">1356</span> // Just in case we are passed a 'len' that is > buffer length...<a name="line.1356"></a> |
| <span class="sourceLineNo">1357</span> if (off >= b.capacity()) {<a name="line.1357"></a> |
| <span class="sourceLineNo">1358</span> return result.toString();<a name="line.1358"></a> |
| <span class="sourceLineNo">1359</span> }<a name="line.1359"></a> |
| <span class="sourceLineNo">1360</span> if (off + len > b.capacity()) {<a name="line.1360"></a> |
| <span class="sourceLineNo">1361</span> len = b.capacity() - off;<a name="line.1361"></a> |
| <span class="sourceLineNo">1362</span> }<a name="line.1362"></a> |
| <span class="sourceLineNo">1363</span> for (int i = off; i < off + len; ++i) {<a name="line.1363"></a> |
| <span class="sourceLineNo">1364</span> int ch = b.get(i) & 0xFF;<a name="line.1364"></a> |
| <span class="sourceLineNo">1365</span> if (<a name="line.1365"></a> |
| <span class="sourceLineNo">1366</span> (ch >= '0' && ch <= '9') || (ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z')<a name="line.1366"></a> |
| <span class="sourceLineNo">1367</span> || " `~!@#$%^&*()-_=+[]{}|;:'\",.<>/?".indexOf(ch) >= 0<a name="line.1367"></a> |
| <span class="sourceLineNo">1368</span> ) {<a name="line.1368"></a> |
| <span class="sourceLineNo">1369</span> result.append((char) ch);<a name="line.1369"></a> |
| <span class="sourceLineNo">1370</span> } else {<a name="line.1370"></a> |
| <span class="sourceLineNo">1371</span> result.append(String.format("\\x%02X", ch));<a name="line.1371"></a> |
| <span class="sourceLineNo">1372</span> }<a name="line.1372"></a> |
| <span class="sourceLineNo">1373</span> }<a name="line.1373"></a> |
| <span class="sourceLineNo">1374</span> return result.toString();<a name="line.1374"></a> |
| <span class="sourceLineNo">1375</span> }<a name="line.1375"></a> |
| <span class="sourceLineNo">1376</span><a name="line.1376"></a> |
| <span class="sourceLineNo">1377</span> public static String toStringBinary(final ByteBuffer b) {<a name="line.1377"></a> |
| <span class="sourceLineNo">1378</span> return toStringBinary(b, 0, b.capacity());<a name="line.1378"></a> |
| <span class="sourceLineNo">1379</span> }<a name="line.1379"></a> |
| <span class="sourceLineNo">1380</span><a name="line.1380"></a> |
| <span class="sourceLineNo">1381</span> /**<a name="line.1381"></a> |
| <span class="sourceLineNo">1382</span> * Find index of passed delimiter.<a name="line.1382"></a> |
| <span class="sourceLineNo">1383</span> * @return Index of delimiter having started from start of <code>b</code> moving rightward.<a name="line.1383"></a> |
| <span class="sourceLineNo">1384</span> */<a name="line.1384"></a> |
| <span class="sourceLineNo">1385</span> public static int searchDelimiterIndex(ByteBuffer b, int offset, final int length,<a name="line.1385"></a> |
| <span class="sourceLineNo">1386</span> final int delimiter) {<a name="line.1386"></a> |
| <span class="sourceLineNo">1387</span> for (int i = offset, n = offset + length; i < n; i++) {<a name="line.1387"></a> |
| <span class="sourceLineNo">1388</span> if (b.get(i) == delimiter) {<a name="line.1388"></a> |
| <span class="sourceLineNo">1389</span> return i;<a name="line.1389"></a> |
| <span class="sourceLineNo">1390</span> }<a name="line.1390"></a> |
| <span class="sourceLineNo">1391</span> }<a name="line.1391"></a> |
| <span class="sourceLineNo">1392</span> return -1;<a name="line.1392"></a> |
| <span class="sourceLineNo">1393</span> }<a name="line.1393"></a> |
| <span class="sourceLineNo">1394</span><a name="line.1394"></a> |
| <span class="sourceLineNo">1395</span> /**<a name="line.1395"></a> |
| <span class="sourceLineNo">1396</span> * Find index of passed delimiter walking from end of buffer backwards.<a name="line.1396"></a> |
| <span class="sourceLineNo">1397</span> * @return Index of delimiter<a name="line.1397"></a> |
| <span class="sourceLineNo">1398</span> */<a name="line.1398"></a> |
| <span class="sourceLineNo">1399</span> public static int searchDelimiterIndexInReverse(ByteBuffer b, int offset, int length,<a name="line.1399"></a> |
| <span class="sourceLineNo">1400</span> int delimiter) {<a name="line.1400"></a> |
| <span class="sourceLineNo">1401</span> for (int i = offset + length - 1; i >= offset; i--) {<a name="line.1401"></a> |
| <span class="sourceLineNo">1402</span> if (b.get(i) == delimiter) {<a name="line.1402"></a> |
| <span class="sourceLineNo">1403</span> return i;<a name="line.1403"></a> |
| <span class="sourceLineNo">1404</span> }<a name="line.1404"></a> |
| <span class="sourceLineNo">1405</span> }<a name="line.1405"></a> |
| <span class="sourceLineNo">1406</span> return -1;<a name="line.1406"></a> |
| <span class="sourceLineNo">1407</span> }<a name="line.1407"></a> |
| <span class="sourceLineNo">1408</span>}<a name="line.1408"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
