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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.util;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import java.io.ByteArrayOutputStream;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.io.DataInput;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.io.DataInputStream;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.io.DataOutput;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.io.IOException;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.io.InputStream;</span> |
| <span class="source-line-no">026</span><span id="line-26">import java.io.OutputStream;</span> |
| <span class="source-line-no">027</span><span id="line-27">import java.math.BigDecimal;</span> |
| <span class="source-line-no">028</span><span id="line-28">import java.math.BigInteger;</span> |
| <span class="source-line-no">029</span><span id="line-29">import java.nio.ByteBuffer;</span> |
| <span class="source-line-no">030</span><span id="line-30">import java.util.Arrays;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.io.ByteBufferWriter;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.io.util.StreamUtils;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.nio.ByteBuff;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.unsafe.HBasePlatformDependent;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.io.IOUtils;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.io.WritableUtils;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">038</span><span id="line-38"></span> |
| <span class="source-line-no">039</span><span id="line-39">/**</span> |
| <span class="source-line-no">040</span><span id="line-40"> * Utility functions for working with byte buffers, such as reading/writing variable-length long</span> |
| <span class="source-line-no">041</span><span id="line-41"> * numbers.</span> |
| <span class="source-line-no">042</span><span id="line-42"> */</span> |
| <span class="source-line-no">043</span><span id="line-43">@InterfaceAudience.Private</span> |
| <span class="source-line-no">044</span><span id="line-44">public final class ByteBufferUtils {</span> |
| <span class="source-line-no">045</span><span id="line-45"> // "Compressed integer" serialization helper constants.</span> |
| <span class="source-line-no">046</span><span id="line-46"> public final static int VALUE_MASK = 0x7f;</span> |
| <span class="source-line-no">047</span><span id="line-47"> public final static int NEXT_BIT_SHIFT = 7;</span> |
| <span class="source-line-no">048</span><span id="line-48"> public final static int NEXT_BIT_MASK = 1 << 7;</span> |
| <span class="source-line-no">049</span><span id="line-49"> final static boolean UNSAFE_AVAIL = HBasePlatformDependent.isUnsafeAvailable();</span> |
| <span class="source-line-no">050</span><span id="line-50"> public final static boolean UNSAFE_UNALIGNED = HBasePlatformDependent.unaligned();</span> |
| <span class="source-line-no">051</span><span id="line-51"></span> |
| <span class="source-line-no">052</span><span id="line-52"> private ByteBufferUtils() {</span> |
| <span class="source-line-no">053</span><span id="line-53"> }</span> |
| <span class="source-line-no">054</span><span id="line-54"></span> |
| <span class="source-line-no">055</span><span id="line-55"> static abstract class Comparer {</span> |
| <span class="source-line-no">056</span><span id="line-56"> abstract int compareTo(byte[] buf1, int o1, int l1, ByteBuffer buf2, int o2, int l2);</span> |
| <span class="source-line-no">057</span><span id="line-57"></span> |
| <span class="source-line-no">058</span><span id="line-58"> abstract int compareTo(ByteBuffer buf1, int o1, int l1, ByteBuffer buf2, int o2, int l2);</span> |
| <span class="source-line-no">059</span><span id="line-59"> }</span> |
| <span class="source-line-no">060</span><span id="line-60"></span> |
| <span class="source-line-no">061</span><span id="line-61"> static abstract class Converter {</span> |
| <span class="source-line-no">062</span><span id="line-62"> abstract short toShort(ByteBuffer buffer, int offset);</span> |
| <span class="source-line-no">063</span><span id="line-63"></span> |
| <span class="source-line-no">064</span><span id="line-64"> abstract int toInt(ByteBuffer buffer);</span> |
| <span class="source-line-no">065</span><span id="line-65"></span> |
| <span class="source-line-no">066</span><span id="line-66"> abstract int toInt(ByteBuffer buffer, int offset);</span> |
| <span class="source-line-no">067</span><span id="line-67"></span> |
| <span class="source-line-no">068</span><span id="line-68"> abstract long toLong(ByteBuffer buffer, int offset);</span> |
| <span class="source-line-no">069</span><span id="line-69"></span> |
| <span class="source-line-no">070</span><span id="line-70"> abstract void putInt(ByteBuffer buffer, int val);</span> |
| <span class="source-line-no">071</span><span id="line-71"></span> |
| <span class="source-line-no">072</span><span id="line-72"> abstract int putInt(ByteBuffer buffer, int index, int val);</span> |
| <span class="source-line-no">073</span><span id="line-73"></span> |
| <span class="source-line-no">074</span><span id="line-74"> abstract void putShort(ByteBuffer buffer, short val);</span> |
| <span class="source-line-no">075</span><span id="line-75"></span> |
| <span class="source-line-no">076</span><span id="line-76"> abstract int putShort(ByteBuffer buffer, int index, short val);</span> |
| <span class="source-line-no">077</span><span id="line-77"></span> |
| <span class="source-line-no">078</span><span id="line-78"> abstract void putLong(ByteBuffer buffer, long val);</span> |
| <span class="source-line-no">079</span><span id="line-79"></span> |
| <span class="source-line-no">080</span><span id="line-80"> abstract int putLong(ByteBuffer buffer, int index, long val);</span> |
| <span class="source-line-no">081</span><span id="line-81"> }</span> |
| <span class="source-line-no">082</span><span id="line-82"></span> |
| <span class="source-line-no">083</span><span id="line-83"> static abstract class CommonPrefixer {</span> |
| <span class="source-line-no">084</span><span id="line-84"> abstract int findCommonPrefix(ByteBuffer left, int leftOffset, int leftLength, byte[] right,</span> |
| <span class="source-line-no">085</span><span id="line-85"> int rightOffset, int rightLength);</span> |
| <span class="source-line-no">086</span><span id="line-86"></span> |
| <span class="source-line-no">087</span><span id="line-87"> abstract int findCommonPrefix(ByteBuffer left, int leftOffset, int leftLength, ByteBuffer right,</span> |
| <span class="source-line-no">088</span><span id="line-88"> int rightOffset, int rightLength);</span> |
| <span class="source-line-no">089</span><span id="line-89"> }</span> |
| <span class="source-line-no">090</span><span id="line-90"></span> |
| <span class="source-line-no">091</span><span id="line-91"> static class ComparerHolder {</span> |
| <span class="source-line-no">092</span><span id="line-92"> static final String UNSAFE_COMPARER_NAME = ComparerHolder.class.getName() + "$UnsafeComparer";</span> |
| <span class="source-line-no">093</span><span id="line-93"></span> |
| <span class="source-line-no">094</span><span id="line-94"> static final Comparer BEST_COMPARER = getBestComparer();</span> |
| <span class="source-line-no">095</span><span id="line-95"></span> |
| <span class="source-line-no">096</span><span id="line-96"> static Comparer getBestComparer() {</span> |
| <span class="source-line-no">097</span><span id="line-97"> try {</span> |
| <span class="source-line-no">098</span><span id="line-98"> Class<? extends Comparer> theClass =</span> |
| <span class="source-line-no">099</span><span id="line-99"> Class.forName(UNSAFE_COMPARER_NAME).asSubclass(Comparer.class);</span> |
| <span class="source-line-no">100</span><span id="line-100"></span> |
| <span class="source-line-no">101</span><span id="line-101"> return theClass.getConstructor().newInstance();</span> |
| <span class="source-line-no">102</span><span id="line-102"> } catch (Throwable t) { // ensure we really catch *everything*</span> |
| <span class="source-line-no">103</span><span id="line-103"> return PureJavaComparer.INSTANCE;</span> |
| <span class="source-line-no">104</span><span id="line-104"> }</span> |
| <span class="source-line-no">105</span><span id="line-105"> }</span> |
| <span class="source-line-no">106</span><span id="line-106"></span> |
| <span class="source-line-no">107</span><span id="line-107"> static final class PureJavaComparer extends Comparer {</span> |
| <span class="source-line-no">108</span><span id="line-108"> static final PureJavaComparer INSTANCE = new PureJavaComparer();</span> |
| <span class="source-line-no">109</span><span id="line-109"></span> |
| <span class="source-line-no">110</span><span id="line-110"> private PureJavaComparer() {</span> |
| <span class="source-line-no">111</span><span id="line-111"> }</span> |
| <span class="source-line-no">112</span><span id="line-112"></span> |
| <span class="source-line-no">113</span><span id="line-113"> @Override</span> |
| <span class="source-line-no">114</span><span id="line-114"> public int compareTo(byte[] buf1, int o1, int l1, ByteBuffer buf2, int o2, int l2) {</span> |
| <span class="source-line-no">115</span><span id="line-115"> int end1 = o1 + l1;</span> |
| <span class="source-line-no">116</span><span id="line-116"> int end2 = o2 + l2;</span> |
| <span class="source-line-no">117</span><span id="line-117"> for (int i = o1, j = o2; i < end1 && j < end2; i++, j++) {</span> |
| <span class="source-line-no">118</span><span id="line-118"> int a = buf1[i] & 0xFF;</span> |
| <span class="source-line-no">119</span><span id="line-119"> int b = buf2.get(j) & 0xFF;</span> |
| <span class="source-line-no">120</span><span id="line-120"> if (a != b) {</span> |
| <span class="source-line-no">121</span><span id="line-121"> return a - b;</span> |
| <span class="source-line-no">122</span><span id="line-122"> }</span> |
| <span class="source-line-no">123</span><span id="line-123"> }</span> |
| <span class="source-line-no">124</span><span id="line-124"> return l1 - l2;</span> |
| <span class="source-line-no">125</span><span id="line-125"> }</span> |
| <span class="source-line-no">126</span><span id="line-126"></span> |
| <span class="source-line-no">127</span><span id="line-127"> @Override</span> |
| <span class="source-line-no">128</span><span id="line-128"> public int compareTo(ByteBuffer buf1, int o1, int l1, ByteBuffer buf2, int o2, int l2) {</span> |
| <span class="source-line-no">129</span><span id="line-129"> int end1 = o1 + l1;</span> |
| <span class="source-line-no">130</span><span id="line-130"> int end2 = o2 + l2;</span> |
| <span class="source-line-no">131</span><span id="line-131"> for (int i = o1, j = o2; i < end1 && j < end2; i++, j++) {</span> |
| <span class="source-line-no">132</span><span id="line-132"> int a = buf1.get(i) & 0xFF;</span> |
| <span class="source-line-no">133</span><span id="line-133"> int b = buf2.get(j) & 0xFF;</span> |
| <span class="source-line-no">134</span><span id="line-134"> if (a != b) {</span> |
| <span class="source-line-no">135</span><span id="line-135"> return a - b;</span> |
| <span class="source-line-no">136</span><span id="line-136"> }</span> |
| <span class="source-line-no">137</span><span id="line-137"> }</span> |
| <span class="source-line-no">138</span><span id="line-138"> return l1 - l2;</span> |
| <span class="source-line-no">139</span><span id="line-139"> }</span> |
| <span class="source-line-no">140</span><span id="line-140"> }</span> |
| <span class="source-line-no">141</span><span id="line-141"></span> |
| <span class="source-line-no">142</span><span id="line-142"> static final class UnsafeComparer extends Comparer {</span> |
| <span class="source-line-no">143</span><span id="line-143"></span> |
| <span class="source-line-no">144</span><span id="line-144"> public UnsafeComparer() {</span> |
| <span class="source-line-no">145</span><span id="line-145"> }</span> |
| <span class="source-line-no">146</span><span id="line-146"></span> |
| <span class="source-line-no">147</span><span id="line-147"> static {</span> |
| <span class="source-line-no">148</span><span id="line-148"> if (!UNSAFE_UNALIGNED) {</span> |
| <span class="source-line-no">149</span><span id="line-149"> throw new Error();</span> |
| <span class="source-line-no">150</span><span id="line-150"> }</span> |
| <span class="source-line-no">151</span><span id="line-151"> }</span> |
| <span class="source-line-no">152</span><span id="line-152"></span> |
| <span class="source-line-no">153</span><span id="line-153"> @Override</span> |
| <span class="source-line-no">154</span><span id="line-154"> public int compareTo(byte[] buf1, int o1, int l1, ByteBuffer buf2, int o2, int l2) {</span> |
| <span class="source-line-no">155</span><span id="line-155"> long offset2Adj;</span> |
| <span class="source-line-no">156</span><span id="line-156"> Object refObj2 = null;</span> |
| <span class="source-line-no">157</span><span id="line-157"> if (buf2.isDirect()) {</span> |
| <span class="source-line-no">158</span><span id="line-158"> offset2Adj = o2 + UnsafeAccess.directBufferAddress(buf2);</span> |
| <span class="source-line-no">159</span><span id="line-159"> } else {</span> |
| <span class="source-line-no">160</span><span id="line-160"> offset2Adj = o2 + buf2.arrayOffset() + UnsafeAccess.BYTE_ARRAY_BASE_OFFSET;</span> |
| <span class="source-line-no">161</span><span id="line-161"> refObj2 = buf2.array();</span> |
| <span class="source-line-no">162</span><span id="line-162"> }</span> |
| <span class="source-line-no">163</span><span id="line-163"> return compareToUnsafe(buf1, o1 + UnsafeAccess.BYTE_ARRAY_BASE_OFFSET, l1, refObj2,</span> |
| <span class="source-line-no">164</span><span id="line-164"> offset2Adj, l2);</span> |
| <span class="source-line-no">165</span><span id="line-165"> }</span> |
| <span class="source-line-no">166</span><span id="line-166"></span> |
| <span class="source-line-no">167</span><span id="line-167"> @Override</span> |
| <span class="source-line-no">168</span><span id="line-168"> public int compareTo(ByteBuffer buf1, int o1, int l1, ByteBuffer buf2, int o2, int l2) {</span> |
| <span class="source-line-no">169</span><span id="line-169"> long offset1Adj, offset2Adj;</span> |
| <span class="source-line-no">170</span><span id="line-170"> Object refObj1 = null, refObj2 = null;</span> |
| <span class="source-line-no">171</span><span id="line-171"> if (buf1.isDirect()) {</span> |
| <span class="source-line-no">172</span><span id="line-172"> offset1Adj = o1 + UnsafeAccess.directBufferAddress(buf1);</span> |
| <span class="source-line-no">173</span><span id="line-173"> } else {</span> |
| <span class="source-line-no">174</span><span id="line-174"> offset1Adj = o1 + buf1.arrayOffset() + UnsafeAccess.BYTE_ARRAY_BASE_OFFSET;</span> |
| <span class="source-line-no">175</span><span id="line-175"> refObj1 = buf1.array();</span> |
| <span class="source-line-no">176</span><span id="line-176"> }</span> |
| <span class="source-line-no">177</span><span id="line-177"> if (buf2.isDirect()) {</span> |
| <span class="source-line-no">178</span><span id="line-178"> offset2Adj = o2 + UnsafeAccess.directBufferAddress(buf2);</span> |
| <span class="source-line-no">179</span><span id="line-179"> } else {</span> |
| <span class="source-line-no">180</span><span id="line-180"> offset2Adj = o2 + buf2.arrayOffset() + UnsafeAccess.BYTE_ARRAY_BASE_OFFSET;</span> |
| <span class="source-line-no">181</span><span id="line-181"> refObj2 = buf2.array();</span> |
| <span class="source-line-no">182</span><span id="line-182"> }</span> |
| <span class="source-line-no">183</span><span id="line-183"> return compareToUnsafe(refObj1, offset1Adj, l1, refObj2, offset2Adj, l2);</span> |
| <span class="source-line-no">184</span><span id="line-184"> }</span> |
| <span class="source-line-no">185</span><span id="line-185"> }</span> |
| <span class="source-line-no">186</span><span id="line-186"> }</span> |
| <span class="source-line-no">187</span><span id="line-187"></span> |
| <span class="source-line-no">188</span><span id="line-188"> static class ConverterHolder {</span> |
| <span class="source-line-no">189</span><span id="line-189"> static final String UNSAFE_CONVERTER_NAME =</span> |
| <span class="source-line-no">190</span><span id="line-190"> ConverterHolder.class.getName() + "$UnsafeConverter";</span> |
| <span class="source-line-no">191</span><span id="line-191"> static final Converter BEST_CONVERTER = getBestConverter();</span> |
| <span class="source-line-no">192</span><span id="line-192"></span> |
| <span class="source-line-no">193</span><span id="line-193"> static Converter getBestConverter() {</span> |
| <span class="source-line-no">194</span><span id="line-194"> try {</span> |
| <span class="source-line-no">195</span><span id="line-195"> Class<? extends Converter> theClass =</span> |
| <span class="source-line-no">196</span><span id="line-196"> Class.forName(UNSAFE_CONVERTER_NAME).asSubclass(Converter.class);</span> |
| <span class="source-line-no">197</span><span id="line-197"></span> |
| <span class="source-line-no">198</span><span id="line-198"> // yes, UnsafeComparer does implement Comparer<byte[]></span> |
| <span class="source-line-no">199</span><span id="line-199"> return theClass.getConstructor().newInstance();</span> |
| <span class="source-line-no">200</span><span id="line-200"> } catch (Throwable t) { // ensure we really catch *everything*</span> |
| <span class="source-line-no">201</span><span id="line-201"> return PureJavaConverter.INSTANCE;</span> |
| <span class="source-line-no">202</span><span id="line-202"> }</span> |
| <span class="source-line-no">203</span><span id="line-203"> }</span> |
| <span class="source-line-no">204</span><span id="line-204"></span> |
| <span class="source-line-no">205</span><span id="line-205"> static final class PureJavaConverter extends Converter {</span> |
| <span class="source-line-no">206</span><span id="line-206"> static final PureJavaConverter INSTANCE = new PureJavaConverter();</span> |
| <span class="source-line-no">207</span><span id="line-207"></span> |
| <span class="source-line-no">208</span><span id="line-208"> private PureJavaConverter() {</span> |
| <span class="source-line-no">209</span><span id="line-209"> }</span> |
| <span class="source-line-no">210</span><span id="line-210"></span> |
| <span class="source-line-no">211</span><span id="line-211"> @Override</span> |
| <span class="source-line-no">212</span><span id="line-212"> short toShort(ByteBuffer buffer, int offset) {</span> |
| <span class="source-line-no">213</span><span id="line-213"> return buffer.getShort(offset);</span> |
| <span class="source-line-no">214</span><span id="line-214"> }</span> |
| <span class="source-line-no">215</span><span id="line-215"></span> |
| <span class="source-line-no">216</span><span id="line-216"> @Override</span> |
| <span class="source-line-no">217</span><span id="line-217"> int toInt(ByteBuffer buffer) {</span> |
| <span class="source-line-no">218</span><span id="line-218"> return buffer.getInt();</span> |
| <span class="source-line-no">219</span><span id="line-219"> }</span> |
| <span class="source-line-no">220</span><span id="line-220"></span> |
| <span class="source-line-no">221</span><span id="line-221"> @Override</span> |
| <span class="source-line-no">222</span><span id="line-222"> int toInt(ByteBuffer buffer, int offset) {</span> |
| <span class="source-line-no">223</span><span id="line-223"> return buffer.getInt(offset);</span> |
| <span class="source-line-no">224</span><span id="line-224"> }</span> |
| <span class="source-line-no">225</span><span id="line-225"></span> |
| <span class="source-line-no">226</span><span id="line-226"> @Override</span> |
| <span class="source-line-no">227</span><span id="line-227"> long toLong(ByteBuffer buffer, int offset) {</span> |
| <span class="source-line-no">228</span><span id="line-228"> return buffer.getLong(offset);</span> |
| <span class="source-line-no">229</span><span id="line-229"> }</span> |
| <span class="source-line-no">230</span><span id="line-230"></span> |
| <span class="source-line-no">231</span><span id="line-231"> @Override</span> |
| <span class="source-line-no">232</span><span id="line-232"> void putInt(ByteBuffer buffer, int val) {</span> |
| <span class="source-line-no">233</span><span id="line-233"> buffer.putInt(val);</span> |
| <span class="source-line-no">234</span><span id="line-234"> }</span> |
| <span class="source-line-no">235</span><span id="line-235"></span> |
| <span class="source-line-no">236</span><span id="line-236"> @Override</span> |
| <span class="source-line-no">237</span><span id="line-237"> int putInt(ByteBuffer buffer, int index, int val) {</span> |
| <span class="source-line-no">238</span><span id="line-238"> buffer.putInt(index, val);</span> |
| <span class="source-line-no">239</span><span id="line-239"> return index + Bytes.SIZEOF_INT;</span> |
| <span class="source-line-no">240</span><span id="line-240"> }</span> |
| <span class="source-line-no">241</span><span id="line-241"></span> |
| <span class="source-line-no">242</span><span id="line-242"> @Override</span> |
| <span class="source-line-no">243</span><span id="line-243"> void putShort(ByteBuffer buffer, short val) {</span> |
| <span class="source-line-no">244</span><span id="line-244"> buffer.putShort(val);</span> |
| <span class="source-line-no">245</span><span id="line-245"> }</span> |
| <span class="source-line-no">246</span><span id="line-246"></span> |
| <span class="source-line-no">247</span><span id="line-247"> @Override</span> |
| <span class="source-line-no">248</span><span id="line-248"> int putShort(ByteBuffer buffer, int index, short val) {</span> |
| <span class="source-line-no">249</span><span id="line-249"> buffer.putShort(index, val);</span> |
| <span class="source-line-no">250</span><span id="line-250"> return index + Bytes.SIZEOF_SHORT;</span> |
| <span class="source-line-no">251</span><span id="line-251"> }</span> |
| <span class="source-line-no">252</span><span id="line-252"></span> |
| <span class="source-line-no">253</span><span id="line-253"> @Override</span> |
| <span class="source-line-no">254</span><span id="line-254"> void putLong(ByteBuffer buffer, long val) {</span> |
| <span class="source-line-no">255</span><span id="line-255"> buffer.putLong(val);</span> |
| <span class="source-line-no">256</span><span id="line-256"> }</span> |
| <span class="source-line-no">257</span><span id="line-257"></span> |
| <span class="source-line-no">258</span><span id="line-258"> @Override</span> |
| <span class="source-line-no">259</span><span id="line-259"> int putLong(ByteBuffer buffer, int index, long val) {</span> |
| <span class="source-line-no">260</span><span id="line-260"> buffer.putLong(index, val);</span> |
| <span class="source-line-no">261</span><span id="line-261"> return index + Bytes.SIZEOF_LONG;</span> |
| <span class="source-line-no">262</span><span id="line-262"> }</span> |
| <span class="source-line-no">263</span><span id="line-263"> }</span> |
| <span class="source-line-no">264</span><span id="line-264"></span> |
| <span class="source-line-no">265</span><span id="line-265"> static final class UnsafeConverter extends Converter {</span> |
| <span class="source-line-no">266</span><span id="line-266"></span> |
| <span class="source-line-no">267</span><span id="line-267"> public UnsafeConverter() {</span> |
| <span class="source-line-no">268</span><span id="line-268"> }</span> |
| <span class="source-line-no">269</span><span id="line-269"></span> |
| <span class="source-line-no">270</span><span id="line-270"> static {</span> |
| <span class="source-line-no">271</span><span id="line-271"> if (!UNSAFE_UNALIGNED) {</span> |
| <span class="source-line-no">272</span><span id="line-272"> throw new Error();</span> |
| <span class="source-line-no">273</span><span id="line-273"> }</span> |
| <span class="source-line-no">274</span><span id="line-274"> }</span> |
| <span class="source-line-no">275</span><span id="line-275"></span> |
| <span class="source-line-no">276</span><span id="line-276"> @Override</span> |
| <span class="source-line-no">277</span><span id="line-277"> short toShort(ByteBuffer buffer, int offset) {</span> |
| <span class="source-line-no">278</span><span id="line-278"> return UnsafeAccess.toShort(buffer, offset);</span> |
| <span class="source-line-no">279</span><span id="line-279"> }</span> |
| <span class="source-line-no">280</span><span id="line-280"></span> |
| <span class="source-line-no">281</span><span id="line-281"> @Override</span> |
| <span class="source-line-no">282</span><span id="line-282"> int toInt(ByteBuffer buffer) {</span> |
| <span class="source-line-no">283</span><span id="line-283"> int i = UnsafeAccess.toInt(buffer, buffer.position());</span> |
| <span class="source-line-no">284</span><span id="line-284"> buffer.position(buffer.position() + Bytes.SIZEOF_INT);</span> |
| <span class="source-line-no">285</span><span id="line-285"> return i;</span> |
| <span class="source-line-no">286</span><span id="line-286"> }</span> |
| <span class="source-line-no">287</span><span id="line-287"></span> |
| <span class="source-line-no">288</span><span id="line-288"> @Override</span> |
| <span class="source-line-no">289</span><span id="line-289"> int toInt(ByteBuffer buffer, int offset) {</span> |
| <span class="source-line-no">290</span><span id="line-290"> return UnsafeAccess.toInt(buffer, offset);</span> |
| <span class="source-line-no">291</span><span id="line-291"> }</span> |
| <span class="source-line-no">292</span><span id="line-292"></span> |
| <span class="source-line-no">293</span><span id="line-293"> @Override</span> |
| <span class="source-line-no">294</span><span id="line-294"> long toLong(ByteBuffer buffer, int offset) {</span> |
| <span class="source-line-no">295</span><span id="line-295"> return UnsafeAccess.toLong(buffer, offset);</span> |
| <span class="source-line-no">296</span><span id="line-296"> }</span> |
| <span class="source-line-no">297</span><span id="line-297"></span> |
| <span class="source-line-no">298</span><span id="line-298"> @Override</span> |
| <span class="source-line-no">299</span><span id="line-299"> void putInt(ByteBuffer buffer, int val) {</span> |
| <span class="source-line-no">300</span><span id="line-300"> int newPos = UnsafeAccess.putInt(buffer, buffer.position(), val);</span> |
| <span class="source-line-no">301</span><span id="line-301"> buffer.position(newPos);</span> |
| <span class="source-line-no">302</span><span id="line-302"> }</span> |
| <span class="source-line-no">303</span><span id="line-303"></span> |
| <span class="source-line-no">304</span><span id="line-304"> @Override</span> |
| <span class="source-line-no">305</span><span id="line-305"> int putInt(ByteBuffer buffer, int index, int val) {</span> |
| <span class="source-line-no">306</span><span id="line-306"> return UnsafeAccess.putInt(buffer, index, val);</span> |
| <span class="source-line-no">307</span><span id="line-307"> }</span> |
| <span class="source-line-no">308</span><span id="line-308"></span> |
| <span class="source-line-no">309</span><span id="line-309"> @Override</span> |
| <span class="source-line-no">310</span><span id="line-310"> void putShort(ByteBuffer buffer, short val) {</span> |
| <span class="source-line-no">311</span><span id="line-311"> int newPos = UnsafeAccess.putShort(buffer, buffer.position(), val);</span> |
| <span class="source-line-no">312</span><span id="line-312"> buffer.position(newPos);</span> |
| <span class="source-line-no">313</span><span id="line-313"> }</span> |
| <span class="source-line-no">314</span><span id="line-314"></span> |
| <span class="source-line-no">315</span><span id="line-315"> @Override</span> |
| <span class="source-line-no">316</span><span id="line-316"> int putShort(ByteBuffer buffer, int index, short val) {</span> |
| <span class="source-line-no">317</span><span id="line-317"> return UnsafeAccess.putShort(buffer, index, val);</span> |
| <span class="source-line-no">318</span><span id="line-318"> }</span> |
| <span class="source-line-no">319</span><span id="line-319"></span> |
| <span class="source-line-no">320</span><span id="line-320"> @Override</span> |
| <span class="source-line-no">321</span><span id="line-321"> void putLong(ByteBuffer buffer, long val) {</span> |
| <span class="source-line-no">322</span><span id="line-322"> int newPos = UnsafeAccess.putLong(buffer, buffer.position(), val);</span> |
| <span class="source-line-no">323</span><span id="line-323"> buffer.position(newPos);</span> |
| <span class="source-line-no">324</span><span id="line-324"> }</span> |
| <span class="source-line-no">325</span><span id="line-325"></span> |
| <span class="source-line-no">326</span><span id="line-326"> @Override</span> |
| <span class="source-line-no">327</span><span id="line-327"> int putLong(ByteBuffer buffer, int index, long val) {</span> |
| <span class="source-line-no">328</span><span id="line-328"> return UnsafeAccess.putLong(buffer, index, val);</span> |
| <span class="source-line-no">329</span><span id="line-329"> }</span> |
| <span class="source-line-no">330</span><span id="line-330"> }</span> |
| <span class="source-line-no">331</span><span id="line-331"> }</span> |
| <span class="source-line-no">332</span><span id="line-332"></span> |
| <span class="source-line-no">333</span><span id="line-333"> static class CommonPrefixerHolder {</span> |
| <span class="source-line-no">334</span><span id="line-334"> static final String UNSAFE_COMMON_PREFIXER_NAME =</span> |
| <span class="source-line-no">335</span><span id="line-335"> CommonPrefixerHolder.class.getName() + "$UnsafeCommonPrefixer";</span> |
| <span class="source-line-no">336</span><span id="line-336"></span> |
| <span class="source-line-no">337</span><span id="line-337"> static final CommonPrefixer BEST_COMMON_PREFIXER = getBestCommonPrefixer();</span> |
| <span class="source-line-no">338</span><span id="line-338"></span> |
| <span class="source-line-no">339</span><span id="line-339"> static CommonPrefixer getBestCommonPrefixer() {</span> |
| <span class="source-line-no">340</span><span id="line-340"> try {</span> |
| <span class="source-line-no">341</span><span id="line-341"> Class<? extends CommonPrefixer> theClass =</span> |
| <span class="source-line-no">342</span><span id="line-342"> Class.forName(UNSAFE_COMMON_PREFIXER_NAME).asSubclass(CommonPrefixer.class);</span> |
| <span class="source-line-no">343</span><span id="line-343"></span> |
| <span class="source-line-no">344</span><span id="line-344"> return theClass.getConstructor().newInstance();</span> |
| <span class="source-line-no">345</span><span id="line-345"> } catch (Throwable t) { // ensure we really catch *everything*</span> |
| <span class="source-line-no">346</span><span id="line-346"> return PureJavaCommonPrefixer.INSTANCE;</span> |
| <span class="source-line-no">347</span><span id="line-347"> }</span> |
| <span class="source-line-no">348</span><span id="line-348"> }</span> |
| <span class="source-line-no">349</span><span id="line-349"></span> |
| <span class="source-line-no">350</span><span id="line-350"> static final class PureJavaCommonPrefixer extends CommonPrefixer {</span> |
| <span class="source-line-no">351</span><span id="line-351"> static final PureJavaCommonPrefixer INSTANCE = new PureJavaCommonPrefixer();</span> |
| <span class="source-line-no">352</span><span id="line-352"></span> |
| <span class="source-line-no">353</span><span id="line-353"> private PureJavaCommonPrefixer() {</span> |
| <span class="source-line-no">354</span><span id="line-354"> }</span> |
| <span class="source-line-no">355</span><span id="line-355"></span> |
| <span class="source-line-no">356</span><span id="line-356"> @Override</span> |
| <span class="source-line-no">357</span><span id="line-357"> public int findCommonPrefix(ByteBuffer left, int leftOffset, int leftLength, byte[] right,</span> |
| <span class="source-line-no">358</span><span id="line-358"> int rightOffset, int rightLength) {</span> |
| <span class="source-line-no">359</span><span id="line-359"> int length = Math.min(leftLength, rightLength);</span> |
| <span class="source-line-no">360</span><span id="line-360"> int result = 0;</span> |
| <span class="source-line-no">361</span><span id="line-361"></span> |
| <span class="source-line-no">362</span><span id="line-362"> while (</span> |
| <span class="source-line-no">363</span><span id="line-363"> result < length</span> |
| <span class="source-line-no">364</span><span id="line-364"> && ByteBufferUtils.toByte(left, leftOffset + result) == right[rightOffset + result]</span> |
| <span class="source-line-no">365</span><span id="line-365"> ) {</span> |
| <span class="source-line-no">366</span><span id="line-366"> result++;</span> |
| <span class="source-line-no">367</span><span id="line-367"> }</span> |
| <span class="source-line-no">368</span><span id="line-368"></span> |
| <span class="source-line-no">369</span><span id="line-369"> return result;</span> |
| <span class="source-line-no">370</span><span id="line-370"> }</span> |
| <span class="source-line-no">371</span><span id="line-371"></span> |
| <span class="source-line-no">372</span><span id="line-372"> @Override</span> |
| <span class="source-line-no">373</span><span id="line-373"> int findCommonPrefix(ByteBuffer left, int leftOffset, int leftLength, ByteBuffer right,</span> |
| <span class="source-line-no">374</span><span id="line-374"> int rightOffset, int rightLength) {</span> |
| <span class="source-line-no">375</span><span id="line-375"> int length = Math.min(leftLength, rightLength);</span> |
| <span class="source-line-no">376</span><span id="line-376"> int result = 0;</span> |
| <span class="source-line-no">377</span><span id="line-377"></span> |
| <span class="source-line-no">378</span><span id="line-378"> while (</span> |
| <span class="source-line-no">379</span><span id="line-379"> result < length && ByteBufferUtils.toByte(left, leftOffset + result)</span> |
| <span class="source-line-no">380</span><span id="line-380"> == ByteBufferUtils.toByte(right, rightOffset + result)</span> |
| <span class="source-line-no">381</span><span id="line-381"> ) {</span> |
| <span class="source-line-no">382</span><span id="line-382"> result++;</span> |
| <span class="source-line-no">383</span><span id="line-383"> }</span> |
| <span class="source-line-no">384</span><span id="line-384"></span> |
| <span class="source-line-no">385</span><span id="line-385"> return result;</span> |
| <span class="source-line-no">386</span><span id="line-386"> }</span> |
| <span class="source-line-no">387</span><span id="line-387"> }</span> |
| <span class="source-line-no">388</span><span id="line-388"></span> |
| <span class="source-line-no">389</span><span id="line-389"> static final class UnsafeCommonPrefixer extends CommonPrefixer {</span> |
| <span class="source-line-no">390</span><span id="line-390"></span> |
| <span class="source-line-no">391</span><span id="line-391"> static {</span> |
| <span class="source-line-no">392</span><span id="line-392"> if (!UNSAFE_UNALIGNED) {</span> |
| <span class="source-line-no">393</span><span id="line-393"> throw new Error();</span> |
| <span class="source-line-no">394</span><span id="line-394"> }</span> |
| <span class="source-line-no">395</span><span id="line-395"> }</span> |
| <span class="source-line-no">396</span><span id="line-396"></span> |
| <span class="source-line-no">397</span><span id="line-397"> public UnsafeCommonPrefixer() {</span> |
| <span class="source-line-no">398</span><span id="line-398"> }</span> |
| <span class="source-line-no">399</span><span id="line-399"></span> |
| <span class="source-line-no">400</span><span id="line-400"> @Override</span> |
| <span class="source-line-no">401</span><span id="line-401"> public int findCommonPrefix(ByteBuffer left, int leftOffset, int leftLength, byte[] right,</span> |
| <span class="source-line-no">402</span><span id="line-402"> int rightOffset, int rightLength) {</span> |
| <span class="source-line-no">403</span><span id="line-403"> long offset1Adj;</span> |
| <span class="source-line-no">404</span><span id="line-404"> Object refObj1 = null;</span> |
| <span class="source-line-no">405</span><span id="line-405"> if (left.isDirect()) {</span> |
| <span class="source-line-no">406</span><span id="line-406"> offset1Adj = leftOffset + UnsafeAccess.directBufferAddress(left);</span> |
| <span class="source-line-no">407</span><span id="line-407"> } else {</span> |
| <span class="source-line-no">408</span><span id="line-408"> offset1Adj = leftOffset + left.arrayOffset() + UnsafeAccess.BYTE_ARRAY_BASE_OFFSET;</span> |
| <span class="source-line-no">409</span><span id="line-409"> refObj1 = left.array();</span> |
| <span class="source-line-no">410</span><span id="line-410"> }</span> |
| <span class="source-line-no">411</span><span id="line-411"> return findCommonPrefixUnsafe(refObj1, offset1Adj, leftLength, right,</span> |
| <span class="source-line-no">412</span><span id="line-412"> rightOffset + UnsafeAccess.BYTE_ARRAY_BASE_OFFSET, rightLength);</span> |
| <span class="source-line-no">413</span><span id="line-413"> }</span> |
| <span class="source-line-no">414</span><span id="line-414"></span> |
| <span class="source-line-no">415</span><span id="line-415"> @Override</span> |
| <span class="source-line-no">416</span><span id="line-416"> public int findCommonPrefix(ByteBuffer left, int leftOffset, int leftLength, ByteBuffer right,</span> |
| <span class="source-line-no">417</span><span id="line-417"> int rightOffset, int rightLength) {</span> |
| <span class="source-line-no">418</span><span id="line-418"> long offset1Adj, offset2Adj;</span> |
| <span class="source-line-no">419</span><span id="line-419"> Object refObj1 = null, refObj2 = null;</span> |
| <span class="source-line-no">420</span><span id="line-420"> if (left.isDirect()) {</span> |
| <span class="source-line-no">421</span><span id="line-421"> offset1Adj = leftOffset + UnsafeAccess.directBufferAddress(left);</span> |
| <span class="source-line-no">422</span><span id="line-422"> } else {</span> |
| <span class="source-line-no">423</span><span id="line-423"> offset1Adj = leftOffset + left.arrayOffset() + UnsafeAccess.BYTE_ARRAY_BASE_OFFSET;</span> |
| <span class="source-line-no">424</span><span id="line-424"> refObj1 = left.array();</span> |
| <span class="source-line-no">425</span><span id="line-425"> }</span> |
| <span class="source-line-no">426</span><span id="line-426"> if (right.isDirect()) {</span> |
| <span class="source-line-no">427</span><span id="line-427"> offset2Adj = rightOffset + UnsafeAccess.directBufferAddress(right);</span> |
| <span class="source-line-no">428</span><span id="line-428"> } else {</span> |
| <span class="source-line-no">429</span><span id="line-429"> offset2Adj = rightOffset + right.arrayOffset() + UnsafeAccess.BYTE_ARRAY_BASE_OFFSET;</span> |
| <span class="source-line-no">430</span><span id="line-430"> refObj2 = right.array();</span> |
| <span class="source-line-no">431</span><span id="line-431"> }</span> |
| <span class="source-line-no">432</span><span id="line-432"> return findCommonPrefixUnsafe(refObj1, offset1Adj, leftLength, refObj2, offset2Adj,</span> |
| <span class="source-line-no">433</span><span id="line-433"> rightLength);</span> |
| <span class="source-line-no">434</span><span id="line-434"> }</span> |
| <span class="source-line-no">435</span><span id="line-435"> }</span> |
| <span class="source-line-no">436</span><span id="line-436"> }</span> |
| <span class="source-line-no">437</span><span id="line-437"></span> |
| <span class="source-line-no">438</span><span id="line-438"> /**</span> |
| <span class="source-line-no">439</span><span id="line-439"> * Similar to {@link WritableUtils#writeVLong(java.io.DataOutput, long)}, but writes to a</span> |
| <span class="source-line-no">440</span><span id="line-440"> * {@link ByteBuffer}.</span> |
| <span class="source-line-no">441</span><span id="line-441"> */</span> |
| <span class="source-line-no">442</span><span id="line-442"> public static void writeVLong(ByteBuffer out, long i) {</span> |
| <span class="source-line-no">443</span><span id="line-443"> if (i >= -112 && i <= 127) {</span> |
| <span class="source-line-no">444</span><span id="line-444"> out.put((byte) i);</span> |
| <span class="source-line-no">445</span><span id="line-445"> return;</span> |
| <span class="source-line-no">446</span><span id="line-446"> }</span> |
| <span class="source-line-no">447</span><span id="line-447"></span> |
| <span class="source-line-no">448</span><span id="line-448"> int len = -112;</span> |
| <span class="source-line-no">449</span><span id="line-449"> if (i < 0) {</span> |
| <span class="source-line-no">450</span><span id="line-450"> i ^= -1L; // take one's complement</span> |
| <span class="source-line-no">451</span><span id="line-451"> len = -120;</span> |
| <span class="source-line-no">452</span><span id="line-452"> }</span> |
| <span class="source-line-no">453</span><span id="line-453"></span> |
| <span class="source-line-no">454</span><span id="line-454"> long tmp = i;</span> |
| <span class="source-line-no">455</span><span id="line-455"> while (tmp != 0) {</span> |
| <span class="source-line-no">456</span><span id="line-456"> tmp = tmp >> 8;</span> |
| <span class="source-line-no">457</span><span id="line-457"> len--;</span> |
| <span class="source-line-no">458</span><span id="line-458"> }</span> |
| <span class="source-line-no">459</span><span id="line-459"></span> |
| <span class="source-line-no">460</span><span id="line-460"> out.put((byte) len);</span> |
| <span class="source-line-no">461</span><span id="line-461"></span> |
| <span class="source-line-no">462</span><span id="line-462"> len = (len < -120) ? -(len + 120) : -(len + 112);</span> |
| <span class="source-line-no">463</span><span id="line-463"></span> |
| <span class="source-line-no">464</span><span id="line-464"> for (int idx = len; idx != 0; idx--) {</span> |
| <span class="source-line-no">465</span><span id="line-465"> int shiftbits = (idx - 1) * 8;</span> |
| <span class="source-line-no">466</span><span id="line-466"> long mask = 0xFFL << shiftbits;</span> |
| <span class="source-line-no">467</span><span id="line-467"> out.put((byte) ((i & mask) >> shiftbits));</span> |
| <span class="source-line-no">468</span><span id="line-468"> }</span> |
| <span class="source-line-no">469</span><span id="line-469"> }</span> |
| <span class="source-line-no">470</span><span id="line-470"></span> |
| <span class="source-line-no">471</span><span id="line-471"> /**</span> |
| <span class="source-line-no">472</span><span id="line-472"> * Similar to {@link WritableUtils#readVLong(java.io.DataInput)} but reads from a</span> |
| <span class="source-line-no">473</span><span id="line-473"> * {@link ByteBuff}.</span> |
| <span class="source-line-no">474</span><span id="line-474"> */</span> |
| <span class="source-line-no">475</span><span id="line-475"> public static long readVLong(ByteBuff buf) {</span> |
| <span class="source-line-no">476</span><span id="line-476"> byte firstByte = buf.get();</span> |
| <span class="source-line-no">477</span><span id="line-477"> int len = WritableUtils.decodeVIntSize(firstByte);</span> |
| <span class="source-line-no">478</span><span id="line-478"> if (len == 1) {</span> |
| <span class="source-line-no">479</span><span id="line-479"> return firstByte;</span> |
| <span class="source-line-no">480</span><span id="line-480"> } else {</span> |
| <span class="source-line-no">481</span><span id="line-481"> int remaining = len - 1;</span> |
| <span class="source-line-no">482</span><span id="line-482"> long i = 0;</span> |
| <span class="source-line-no">483</span><span id="line-483"> int offsetFromPos = 0;</span> |
| <span class="source-line-no">484</span><span id="line-484"> if (remaining >= Bytes.SIZEOF_INT) {</span> |
| <span class="source-line-no">485</span><span id="line-485"> // The int read has to be converted to unsigned long so the & op</span> |
| <span class="source-line-no">486</span><span id="line-486"> i = (buf.getIntAfterPosition(offsetFromPos) & 0x00000000ffffffffL);</span> |
| <span class="source-line-no">487</span><span id="line-487"> remaining -= Bytes.SIZEOF_INT;</span> |
| <span class="source-line-no">488</span><span id="line-488"> offsetFromPos += Bytes.SIZEOF_INT;</span> |
| <span class="source-line-no">489</span><span id="line-489"> }</span> |
| <span class="source-line-no">490</span><span id="line-490"> if (remaining >= Bytes.SIZEOF_SHORT) {</span> |
| <span class="source-line-no">491</span><span id="line-491"> short s = buf.getShortAfterPosition(offsetFromPos);</span> |
| <span class="source-line-no">492</span><span id="line-492"> i = i << 16;</span> |
| <span class="source-line-no">493</span><span id="line-493"> i = i | (s & 0xFFFF);</span> |
| <span class="source-line-no">494</span><span id="line-494"> remaining -= Bytes.SIZEOF_SHORT;</span> |
| <span class="source-line-no">495</span><span id="line-495"> offsetFromPos += Bytes.SIZEOF_SHORT;</span> |
| <span class="source-line-no">496</span><span id="line-496"> }</span> |
| <span class="source-line-no">497</span><span id="line-497"> for (int idx = 0; idx < remaining; idx++) {</span> |
| <span class="source-line-no">498</span><span id="line-498"> byte b = buf.getByteAfterPosition(offsetFromPos + idx);</span> |
| <span class="source-line-no">499</span><span id="line-499"> i = i << 8;</span> |
| <span class="source-line-no">500</span><span id="line-500"> i = i | (b & 0xFF);</span> |
| <span class="source-line-no">501</span><span id="line-501"> }</span> |
| <span class="source-line-no">502</span><span id="line-502"> buf.skip(len - 1);</span> |
| <span class="source-line-no">503</span><span id="line-503"> return WritableUtils.isNegativeVInt(firstByte) ? ~i : i;</span> |
| <span class="source-line-no">504</span><span id="line-504"> }</span> |
| <span class="source-line-no">505</span><span id="line-505"> }</span> |
| <span class="source-line-no">506</span><span id="line-506"></span> |
| <span class="source-line-no">507</span><span id="line-507"> /**</span> |
| <span class="source-line-no">508</span><span id="line-508"> * Similar to {@link WritableUtils#readVLong(DataInput)} but reads from a {@link ByteBuffer}.</span> |
| <span class="source-line-no">509</span><span id="line-509"> */</span> |
| <span class="source-line-no">510</span><span id="line-510"> public static long readVLong(ByteBuffer buf) {</span> |
| <span class="source-line-no">511</span><span id="line-511"> byte firstByte = buf.get();</span> |
| <span class="source-line-no">512</span><span id="line-512"> int len = WritableUtils.decodeVIntSize(firstByte);</span> |
| <span class="source-line-no">513</span><span id="line-513"> if (len == 1) {</span> |
| <span class="source-line-no">514</span><span id="line-514"> return firstByte;</span> |
| <span class="source-line-no">515</span><span id="line-515"> } else {</span> |
| <span class="source-line-no">516</span><span id="line-516"> int remaining = len - 1;</span> |
| <span class="source-line-no">517</span><span id="line-517"> long i = 0;</span> |
| <span class="source-line-no">518</span><span id="line-518"> int offsetFromPos = 0;</span> |
| <span class="source-line-no">519</span><span id="line-519"> if (remaining >= Bytes.SIZEOF_INT) {</span> |
| <span class="source-line-no">520</span><span id="line-520"> // The int read has to be converted to unsigned long so the & op</span> |
| <span class="source-line-no">521</span><span id="line-521"> i = (buf.getInt(buf.position() + offsetFromPos) & 0x00000000ffffffffL);</span> |
| <span class="source-line-no">522</span><span id="line-522"> remaining -= Bytes.SIZEOF_INT;</span> |
| <span class="source-line-no">523</span><span id="line-523"> offsetFromPos += Bytes.SIZEOF_INT;</span> |
| <span class="source-line-no">524</span><span id="line-524"> }</span> |
| <span class="source-line-no">525</span><span id="line-525"> if (remaining >= Bytes.SIZEOF_SHORT) {</span> |
| <span class="source-line-no">526</span><span id="line-526"> short s = buf.getShort(buf.position() + offsetFromPos);</span> |
| <span class="source-line-no">527</span><span id="line-527"> i = i << 16;</span> |
| <span class="source-line-no">528</span><span id="line-528"> i = i | (s & 0xFFFF);</span> |
| <span class="source-line-no">529</span><span id="line-529"> remaining -= Bytes.SIZEOF_SHORT;</span> |
| <span class="source-line-no">530</span><span id="line-530"> offsetFromPos += Bytes.SIZEOF_SHORT;</span> |
| <span class="source-line-no">531</span><span id="line-531"> }</span> |
| <span class="source-line-no">532</span><span id="line-532"> for (int idx = 0; idx < remaining; idx++) {</span> |
| <span class="source-line-no">533</span><span id="line-533"> byte b = buf.get(buf.position() + offsetFromPos + idx);</span> |
| <span class="source-line-no">534</span><span id="line-534"> i = i << 8;</span> |
| <span class="source-line-no">535</span><span id="line-535"> i = i | (b & 0xFF);</span> |
| <span class="source-line-no">536</span><span id="line-536"> }</span> |
| <span class="source-line-no">537</span><span id="line-537"> buf.position(buf.position() + len - 1);</span> |
| <span class="source-line-no">538</span><span id="line-538"> return WritableUtils.isNegativeVInt(firstByte) ? ~i : i;</span> |
| <span class="source-line-no">539</span><span id="line-539"> }</span> |
| <span class="source-line-no">540</span><span id="line-540"> }</span> |
| <span class="source-line-no">541</span><span id="line-541"></span> |
| <span class="source-line-no">542</span><span id="line-542"> /**</span> |
| <span class="source-line-no">543</span><span id="line-543"> * Put in buffer integer using 7 bit encoding. For each written byte: 7 bits are used to store</span> |
| <span class="source-line-no">544</span><span id="line-544"> * value 1 bit is used to indicate whether there is next bit.</span> |
| <span class="source-line-no">545</span><span id="line-545"> * @param value Int to be compressed.</span> |
| <span class="source-line-no">546</span><span id="line-546"> * @param out Where to put compressed data</span> |
| <span class="source-line-no">547</span><span id="line-547"> * @return Number of bytes written.</span> |
| <span class="source-line-no">548</span><span id="line-548"> * @throws IOException on stream error</span> |
| <span class="source-line-no">549</span><span id="line-549"> */</span> |
| <span class="source-line-no">550</span><span id="line-550"> public static int putCompressedInt(OutputStream out, final int value) throws IOException {</span> |
| <span class="source-line-no">551</span><span id="line-551"> int i = 0;</span> |
| <span class="source-line-no">552</span><span id="line-552"> int tmpvalue = value;</span> |
| <span class="source-line-no">553</span><span id="line-553"> do {</span> |
| <span class="source-line-no">554</span><span id="line-554"> byte b = (byte) (tmpvalue & VALUE_MASK);</span> |
| <span class="source-line-no">555</span><span id="line-555"> tmpvalue >>>= NEXT_BIT_SHIFT;</span> |
| <span class="source-line-no">556</span><span id="line-556"> if (tmpvalue != 0) {</span> |
| <span class="source-line-no">557</span><span id="line-557"> b |= (byte) NEXT_BIT_MASK;</span> |
| <span class="source-line-no">558</span><span id="line-558"> }</span> |
| <span class="source-line-no">559</span><span id="line-559"> out.write(b);</span> |
| <span class="source-line-no">560</span><span id="line-560"> i++;</span> |
| <span class="source-line-no">561</span><span id="line-561"> } while (tmpvalue != 0);</span> |
| <span class="source-line-no">562</span><span id="line-562"> return i;</span> |
| <span class="source-line-no">563</span><span id="line-563"> }</span> |
| <span class="source-line-no">564</span><span id="line-564"></span> |
| <span class="source-line-no">565</span><span id="line-565"> /**</span> |
| <span class="source-line-no">566</span><span id="line-566"> * Put in output stream 32 bit integer (Big Endian byte order).</span> |
| <span class="source-line-no">567</span><span id="line-567"> * @param out Where to put integer.</span> |
| <span class="source-line-no">568</span><span id="line-568"> * @param value Value of integer.</span> |
| <span class="source-line-no">569</span><span id="line-569"> * @throws IOException On stream error.</span> |
| <span class="source-line-no">570</span><span id="line-570"> */</span> |
| <span class="source-line-no">571</span><span id="line-571"> public static void putInt(OutputStream out, final int value) throws IOException {</span> |
| <span class="source-line-no">572</span><span id="line-572"> // We have writeInt in ByteBufferOutputStream so that it can directly write</span> |
| <span class="source-line-no">573</span><span id="line-573"> // int to underlying</span> |
| <span class="source-line-no">574</span><span id="line-574"> // ByteBuffer in one step.</span> |
| <span class="source-line-no">575</span><span id="line-575"> if (out instanceof ByteBufferWriter) {</span> |
| <span class="source-line-no">576</span><span id="line-576"> ((ByteBufferWriter) out).writeInt(value);</span> |
| <span class="source-line-no">577</span><span id="line-577"> } else {</span> |
| <span class="source-line-no">578</span><span id="line-578"> StreamUtils.writeInt(out, value);</span> |
| <span class="source-line-no">579</span><span id="line-579"> }</span> |
| <span class="source-line-no">580</span><span id="line-580"> }</span> |
| <span class="source-line-no">581</span><span id="line-581"></span> |
| <span class="source-line-no">582</span><span id="line-582"> public static byte toByte(ByteBuffer buffer, int offset) {</span> |
| <span class="source-line-no">583</span><span id="line-583"> if (UNSAFE_AVAIL) {</span> |
| <span class="source-line-no">584</span><span id="line-584"> return UnsafeAccess.toByte(buffer, offset);</span> |
| <span class="source-line-no">585</span><span id="line-585"> } else {</span> |
| <span class="source-line-no">586</span><span id="line-586"> return buffer.get(offset);</span> |
| <span class="source-line-no">587</span><span id="line-587"> }</span> |
| <span class="source-line-no">588</span><span id="line-588"> }</span> |
| <span class="source-line-no">589</span><span id="line-589"></span> |
| <span class="source-line-no">590</span><span id="line-590"> /**</span> |
| <span class="source-line-no">591</span><span id="line-591"> * Copy the data to the output stream and update position in buffer.</span> |
| <span class="source-line-no">592</span><span id="line-592"> * @param out the stream to write bytes to</span> |
| <span class="source-line-no">593</span><span id="line-593"> * @param in the buffer to read bytes from</span> |
| <span class="source-line-no">594</span><span id="line-594"> * @param length the number of bytes to copy</span> |
| <span class="source-line-no">595</span><span id="line-595"> */</span> |
| <span class="source-line-no">596</span><span id="line-596"> public static void moveBufferToStream(OutputStream out, ByteBuffer in, int length)</span> |
| <span class="source-line-no">597</span><span id="line-597"> throws IOException {</span> |
| <span class="source-line-no">598</span><span id="line-598"> copyBufferToStream(out, in, in.position(), length);</span> |
| <span class="source-line-no">599</span><span id="line-599"> skip(in, length);</span> |
| <span class="source-line-no">600</span><span id="line-600"> }</span> |
| <span class="source-line-no">601</span><span id="line-601"></span> |
| <span class="source-line-no">602</span><span id="line-602"> /**</span> |
| <span class="source-line-no">603</span><span id="line-603"> * Copy data from a buffer to an output stream. Does not update the position in the buffer.</span> |
| <span class="source-line-no">604</span><span id="line-604"> * @param out the stream to write bytes to</span> |
| <span class="source-line-no">605</span><span id="line-605"> * @param in the buffer to read bytes from</span> |
| <span class="source-line-no">606</span><span id="line-606"> * @param offset the offset in the buffer (from the buffer's array offset) to start copying bytes</span> |
| <span class="source-line-no">607</span><span id="line-607"> * from</span> |
| <span class="source-line-no">608</span><span id="line-608"> * @param length the number of bytes to copy</span> |
| <span class="source-line-no">609</span><span id="line-609"> */</span> |
| <span class="source-line-no">610</span><span id="line-610"> public static void copyBufferToStream(OutputStream out, ByteBuffer in, int offset, int length)</span> |
| <span class="source-line-no">611</span><span id="line-611"> throws IOException {</span> |
| <span class="source-line-no">612</span><span id="line-612"> if (out instanceof ByteBufferWriter) {</span> |
| <span class="source-line-no">613</span><span id="line-613"> ((ByteBufferWriter) out).write(in, offset, length);</span> |
| <span class="source-line-no">614</span><span id="line-614"> } else if (in.hasArray()) {</span> |
| <span class="source-line-no">615</span><span id="line-615"> out.write(in.array(), in.arrayOffset() + offset, length);</span> |
| <span class="source-line-no">616</span><span id="line-616"> } else {</span> |
| <span class="source-line-no">617</span><span id="line-617"> for (int i = 0; i < length; ++i) {</span> |
| <span class="source-line-no">618</span><span id="line-618"> out.write(toByte(in, offset + i));</span> |
| <span class="source-line-no">619</span><span id="line-619"> }</span> |
| <span class="source-line-no">620</span><span id="line-620"> }</span> |
| <span class="source-line-no">621</span><span id="line-621"> }</span> |
| <span class="source-line-no">622</span><span id="line-622"></span> |
| <span class="source-line-no">623</span><span id="line-623"> /**</span> |
| <span class="source-line-no">624</span><span id="line-624"> * Copy data from a buffer to an output stream. Does not update the position in the buffer.</span> |
| <span class="source-line-no">625</span><span id="line-625"> * @param out the output stream to write bytes to</span> |
| <span class="source-line-no">626</span><span id="line-626"> * @param in the buffer to read bytes from</span> |
| <span class="source-line-no">627</span><span id="line-627"> * @param offset the offset in the buffer (from the buffer's array offset) to start copying bytes</span> |
| <span class="source-line-no">628</span><span id="line-628"> * from</span> |
| <span class="source-line-no">629</span><span id="line-629"> * @param length the number of bytes to copy</span> |
| <span class="source-line-no">630</span><span id="line-630"> */</span> |
| <span class="source-line-no">631</span><span id="line-631"> public static void copyBufferToStream(DataOutput out, ByteBuffer in, int offset, int length)</span> |
| <span class="source-line-no">632</span><span id="line-632"> throws IOException {</span> |
| <span class="source-line-no">633</span><span id="line-633"> if (out instanceof ByteBufferWriter) {</span> |
| <span class="source-line-no">634</span><span id="line-634"> ((ByteBufferWriter) out).write(in, offset, length);</span> |
| <span class="source-line-no">635</span><span id="line-635"> } else if (in.hasArray()) {</span> |
| <span class="source-line-no">636</span><span id="line-636"> out.write(in.array(), in.arrayOffset() + offset, length);</span> |
| <span class="source-line-no">637</span><span id="line-637"> } else {</span> |
| <span class="source-line-no">638</span><span id="line-638"> for (int i = 0; i < length; ++i) {</span> |
| <span class="source-line-no">639</span><span id="line-639"> out.write(toByte(in, offset + i));</span> |
| <span class="source-line-no">640</span><span id="line-640"> }</span> |
| <span class="source-line-no">641</span><span id="line-641"> }</span> |
| <span class="source-line-no">642</span><span id="line-642"> }</span> |
| <span class="source-line-no">643</span><span id="line-643"></span> |
| <span class="source-line-no">644</span><span id="line-644"> public static int putLong(OutputStream out, final long value, final int fitInBytes)</span> |
| <span class="source-line-no">645</span><span id="line-645"> throws IOException {</span> |
| <span class="source-line-no">646</span><span id="line-646"> long tmpValue = value;</span> |
| <span class="source-line-no">647</span><span id="line-647"> for (int i = 0; i < fitInBytes; ++i) {</span> |
| <span class="source-line-no">648</span><span id="line-648"> out.write((byte) (tmpValue & 0xff));</span> |
| <span class="source-line-no">649</span><span id="line-649"> tmpValue >>>= 8;</span> |
| <span class="source-line-no">650</span><span id="line-650"> }</span> |
| <span class="source-line-no">651</span><span id="line-651"> return fitInBytes;</span> |
| <span class="source-line-no">652</span><span id="line-652"> }</span> |
| <span class="source-line-no">653</span><span id="line-653"></span> |
| <span class="source-line-no">654</span><span id="line-654"> public static int putByte(ByteBuffer buffer, int offset, byte b) {</span> |
| <span class="source-line-no">655</span><span id="line-655"> if (UNSAFE_AVAIL) {</span> |
| <span class="source-line-no">656</span><span id="line-656"> return UnsafeAccess.putByte(buffer, offset, b);</span> |
| <span class="source-line-no">657</span><span id="line-657"> } else {</span> |
| <span class="source-line-no">658</span><span id="line-658"> buffer.put(offset, b);</span> |
| <span class="source-line-no">659</span><span id="line-659"> return offset + 1;</span> |
| <span class="source-line-no">660</span><span id="line-660"> }</span> |
| <span class="source-line-no">661</span><span id="line-661"> }</span> |
| <span class="source-line-no">662</span><span id="line-662"></span> |
| <span class="source-line-no">663</span><span id="line-663"> /**</span> |
| <span class="source-line-no">664</span><span id="line-664"> * Check how many bytes are required to store value.</span> |
| <span class="source-line-no">665</span><span id="line-665"> * @param value Value which size will be tested.</span> |
| <span class="source-line-no">666</span><span id="line-666"> * @return How many bytes are required to store value.</span> |
| <span class="source-line-no">667</span><span id="line-667"> */</span> |
| <span class="source-line-no">668</span><span id="line-668"> public static int longFitsIn(final long value) {</span> |
| <span class="source-line-no">669</span><span id="line-669"> if (value < 0) {</span> |
| <span class="source-line-no">670</span><span id="line-670"> return 8;</span> |
| <span class="source-line-no">671</span><span id="line-671"> }</span> |
| <span class="source-line-no">672</span><span id="line-672"></span> |
| <span class="source-line-no">673</span><span id="line-673"> if (value < (1L << (4 * 8))) {</span> |
| <span class="source-line-no">674</span><span id="line-674"> // no more than 4 bytes</span> |
| <span class="source-line-no">675</span><span id="line-675"> if (value < (1L << (2 * 8))) {</span> |
| <span class="source-line-no">676</span><span id="line-676"> if (value < (1L << (1 * 8))) {</span> |
| <span class="source-line-no">677</span><span id="line-677"> return 1;</span> |
| <span class="source-line-no">678</span><span id="line-678"> }</span> |
| <span class="source-line-no">679</span><span id="line-679"> return 2;</span> |
| <span class="source-line-no">680</span><span id="line-680"> }</span> |
| <span class="source-line-no">681</span><span id="line-681"> if (value < (1L << (3 * 8))) {</span> |
| <span class="source-line-no">682</span><span id="line-682"> return 3;</span> |
| <span class="source-line-no">683</span><span id="line-683"> }</span> |
| <span class="source-line-no">684</span><span id="line-684"> return 4;</span> |
| <span class="source-line-no">685</span><span id="line-685"> }</span> |
| <span class="source-line-no">686</span><span id="line-686"> // more than 4 bytes</span> |
| <span class="source-line-no">687</span><span id="line-687"> if (value < (1L << (6 * 8))) {</span> |
| <span class="source-line-no">688</span><span id="line-688"> if (value < (1L << (5 * 8))) {</span> |
| <span class="source-line-no">689</span><span id="line-689"> return 5;</span> |
| <span class="source-line-no">690</span><span id="line-690"> }</span> |
| <span class="source-line-no">691</span><span id="line-691"> return 6;</span> |
| <span class="source-line-no">692</span><span id="line-692"> }</span> |
| <span class="source-line-no">693</span><span id="line-693"> if (value < (1L << (7 * 8))) {</span> |
| <span class="source-line-no">694</span><span id="line-694"> return 7;</span> |
| <span class="source-line-no">695</span><span id="line-695"> }</span> |
| <span class="source-line-no">696</span><span id="line-696"> return 8;</span> |
| <span class="source-line-no">697</span><span id="line-697"> }</span> |
| <span class="source-line-no">698</span><span id="line-698"></span> |
| <span class="source-line-no">699</span><span id="line-699"> /**</span> |
| <span class="source-line-no">700</span><span id="line-700"> * Check how many bytes is required to store value.</span> |
| <span class="source-line-no">701</span><span id="line-701"> * @param value Value which size will be tested.</span> |
| <span class="source-line-no">702</span><span id="line-702"> * @return How many bytes are required to store value.</span> |
| <span class="source-line-no">703</span><span id="line-703"> */</span> |
| <span class="source-line-no">704</span><span id="line-704"> public static int intFitsIn(final int value) {</span> |
| <span class="source-line-no">705</span><span id="line-705"> if (value < 0) {</span> |
| <span class="source-line-no">706</span><span id="line-706"> return 4;</span> |
| <span class="source-line-no">707</span><span id="line-707"> }</span> |
| <span class="source-line-no">708</span><span id="line-708"></span> |
| <span class="source-line-no">709</span><span id="line-709"> if (value < (1 << (2 * 8))) {</span> |
| <span class="source-line-no">710</span><span id="line-710"> if (value < (1 << (1 * 8))) {</span> |
| <span class="source-line-no">711</span><span id="line-711"> return 1;</span> |
| <span class="source-line-no">712</span><span id="line-712"> }</span> |
| <span class="source-line-no">713</span><span id="line-713"> return 2;</span> |
| <span class="source-line-no">714</span><span id="line-714"> }</span> |
| <span class="source-line-no">715</span><span id="line-715"> if (value <= (1 << (3 * 8))) {</span> |
| <span class="source-line-no">716</span><span id="line-716"> return 3;</span> |
| <span class="source-line-no">717</span><span id="line-717"> }</span> |
| <span class="source-line-no">718</span><span id="line-718"> return 4;</span> |
| <span class="source-line-no">719</span><span id="line-719"> }</span> |
| <span class="source-line-no">720</span><span id="line-720"></span> |
| <span class="source-line-no">721</span><span id="line-721"> /**</span> |
| <span class="source-line-no">722</span><span id="line-722"> * Read integer from stream coded in 7 bits and increment position.</span> |
| <span class="source-line-no">723</span><span id="line-723"> * @return the integer that has been read</span> |
| <span class="source-line-no">724</span><span id="line-724"> * @throws IOException on stream error</span> |
| <span class="source-line-no">725</span><span id="line-725"> */</span> |
| <span class="source-line-no">726</span><span id="line-726"> public static int readCompressedInt(InputStream input) throws IOException {</span> |
| <span class="source-line-no">727</span><span id="line-727"> int result = 0;</span> |
| <span class="source-line-no">728</span><span id="line-728"> int i = 0;</span> |
| <span class="source-line-no">729</span><span id="line-729"> byte b;</span> |
| <span class="source-line-no">730</span><span id="line-730"> do {</span> |
| <span class="source-line-no">731</span><span id="line-731"> b = (byte) input.read();</span> |
| <span class="source-line-no">732</span><span id="line-732"> result += (b & VALUE_MASK) << (NEXT_BIT_SHIFT * i);</span> |
| <span class="source-line-no">733</span><span id="line-733"> i++;</span> |
| <span class="source-line-no">734</span><span id="line-734"> if (i > Bytes.SIZEOF_INT + 1) {</span> |
| <span class="source-line-no">735</span><span id="line-735"> throw new IllegalStateException(</span> |
| <span class="source-line-no">736</span><span id="line-736"> "Corrupted compressed int (too long: " + (i + 1) + " bytes)");</span> |
| <span class="source-line-no">737</span><span id="line-737"> }</span> |
| <span class="source-line-no">738</span><span id="line-738"> } while (0 != (b & NEXT_BIT_MASK));</span> |
| <span class="source-line-no">739</span><span id="line-739"> return result;</span> |
| <span class="source-line-no">740</span><span id="line-740"> }</span> |
| <span class="source-line-no">741</span><span id="line-741"></span> |
| <span class="source-line-no">742</span><span id="line-742"> /**</span> |
| <span class="source-line-no">743</span><span id="line-743"> * Read integer from buffer coded in 7 bits and increment position.</span> |
| <span class="source-line-no">744</span><span id="line-744"> * @return Read integer.</span> |
| <span class="source-line-no">745</span><span id="line-745"> */</span> |
| <span class="source-line-no">746</span><span id="line-746"> public static int readCompressedInt(ByteBuffer buffer) {</span> |
| <span class="source-line-no">747</span><span id="line-747"> byte b = buffer.get();</span> |
| <span class="source-line-no">748</span><span id="line-748"> if ((b & NEXT_BIT_MASK) != 0) {</span> |
| <span class="source-line-no">749</span><span id="line-749"> return (b & VALUE_MASK) + (readCompressedInt(buffer) << NEXT_BIT_SHIFT);</span> |
| <span class="source-line-no">750</span><span id="line-750"> }</span> |
| <span class="source-line-no">751</span><span id="line-751"> return b & VALUE_MASK;</span> |
| <span class="source-line-no">752</span><span id="line-752"> }</span> |
| <span class="source-line-no">753</span><span id="line-753"></span> |
| <span class="source-line-no">754</span><span id="line-754"> /**</span> |
| <span class="source-line-no">755</span><span id="line-755"> * Read long which was written to fitInBytes bytes and increment position.</span> |
| <span class="source-line-no">756</span><span id="line-756"> * @param fitInBytes In how many bytes given long is stored.</span> |
| <span class="source-line-no">757</span><span id="line-757"> * @return The value of parsed long.</span> |
| <span class="source-line-no">758</span><span id="line-758"> * @throws IOException on stream error</span> |
| <span class="source-line-no">759</span><span id="line-759"> */</span> |
| <span class="source-line-no">760</span><span id="line-760"> public static long readLong(InputStream in, final int fitInBytes) throws IOException {</span> |
| <span class="source-line-no">761</span><span id="line-761"> long tmpLong = 0;</span> |
| <span class="source-line-no">762</span><span id="line-762"> for (int i = 0; i < fitInBytes; ++i) {</span> |
| <span class="source-line-no">763</span><span id="line-763"> tmpLong |= (in.read() & 0xffL) << (8 * i);</span> |
| <span class="source-line-no">764</span><span id="line-764"> }</span> |
| <span class="source-line-no">765</span><span id="line-765"> return tmpLong;</span> |
| <span class="source-line-no">766</span><span id="line-766"> }</span> |
| <span class="source-line-no">767</span><span id="line-767"></span> |
| <span class="source-line-no">768</span><span id="line-768"> /**</span> |
| <span class="source-line-no">769</span><span id="line-769"> * Read long which was written to fitInBytes bytes and increment position.</span> |
| <span class="source-line-no">770</span><span id="line-770"> * @param fitInBytes In how many bytes given long is stored.</span> |
| <span class="source-line-no">771</span><span id="line-771"> * @return The value of parsed long.</span> |
| <span class="source-line-no">772</span><span id="line-772"> */</span> |
| <span class="source-line-no">773</span><span id="line-773"> public static long readLong(ByteBuffer in, final int fitInBytes) {</span> |
| <span class="source-line-no">774</span><span id="line-774"> long tmpLength = 0;</span> |
| <span class="source-line-no">775</span><span id="line-775"> for (int i = 0; i < fitInBytes; ++i) {</span> |
| <span class="source-line-no">776</span><span id="line-776"> tmpLength |= (in.get() & 0xffL) << (8L * i);</span> |
| <span class="source-line-no">777</span><span id="line-777"> }</span> |
| <span class="source-line-no">778</span><span id="line-778"> return tmpLength;</span> |
| <span class="source-line-no">779</span><span id="line-779"> }</span> |
| <span class="source-line-no">780</span><span id="line-780"></span> |
| <span class="source-line-no">781</span><span id="line-781"> /**</span> |
| <span class="source-line-no">782</span><span id="line-782"> * Copy the given number of bytes from the given stream and put it at the current position of the</span> |
| <span class="source-line-no">783</span><span id="line-783"> * given buffer, updating the position in the buffer.</span> |
| <span class="source-line-no">784</span><span id="line-784"> * @param out the buffer to write data to</span> |
| <span class="source-line-no">785</span><span id="line-785"> * @param in the stream to read data from</span> |
| <span class="source-line-no">786</span><span id="line-786"> * @param length the number of bytes to read/write</span> |
| <span class="source-line-no">787</span><span id="line-787"> */</span> |
| <span class="source-line-no">788</span><span id="line-788"> public static void copyFromStreamToBuffer(ByteBuffer out, DataInputStream in, int length)</span> |
| <span class="source-line-no">789</span><span id="line-789"> throws IOException {</span> |
| <span class="source-line-no">790</span><span id="line-790"> if (out.hasArray()) {</span> |
| <span class="source-line-no">791</span><span id="line-791"> in.readFully(out.array(), out.position() + out.arrayOffset(), length);</span> |
| <span class="source-line-no">792</span><span id="line-792"> skip(out, length);</span> |
| <span class="source-line-no">793</span><span id="line-793"> } else {</span> |
| <span class="source-line-no">794</span><span id="line-794"> for (int i = 0; i < length; ++i) {</span> |
| <span class="source-line-no">795</span><span id="line-795"> out.put(in.readByte());</span> |
| <span class="source-line-no">796</span><span id="line-796"> }</span> |
| <span class="source-line-no">797</span><span id="line-797"> }</span> |
| <span class="source-line-no">798</span><span id="line-798"> }</span> |
| <span class="source-line-no">799</span><span id="line-799"></span> |
| <span class="source-line-no">800</span><span id="line-800"> /**</span> |
| <span class="source-line-no">801</span><span id="line-801"> * Copy from the InputStream to a new heap ByteBuffer until the InputStream is exhausted.</span> |
| <span class="source-line-no">802</span><span id="line-802"> */</span> |
| <span class="source-line-no">803</span><span id="line-803"> public static ByteBuffer drainInputStreamToBuffer(InputStream is) throws IOException {</span> |
| <span class="source-line-no">804</span><span id="line-804"> ByteArrayOutputStream baos = new ByteArrayOutputStream(4096);</span> |
| <span class="source-line-no">805</span><span id="line-805"> IOUtils.copyBytes(is, baos, 4096, true);</span> |
| <span class="source-line-no">806</span><span id="line-806"> ByteBuffer buffer = ByteBuffer.wrap(baos.toByteArray());</span> |
| <span class="source-line-no">807</span><span id="line-807"> buffer.rewind();</span> |
| <span class="source-line-no">808</span><span id="line-808"> return buffer;</span> |
| <span class="source-line-no">809</span><span id="line-809"> }</span> |
| <span class="source-line-no">810</span><span id="line-810"></span> |
| <span class="source-line-no">811</span><span id="line-811"> /**</span> |
| <span class="source-line-no">812</span><span id="line-812"> * Copy one buffer's whole data to another. Write starts at the current position of 'out' buffer.</span> |
| <span class="source-line-no">813</span><span id="line-813"> * Note : This will advance the position marker of {@code out} and also change the position maker</span> |
| <span class="source-line-no">814</span><span id="line-814"> * for {@code in}.</span> |
| <span class="source-line-no">815</span><span id="line-815"> * @param in source buffer</span> |
| <span class="source-line-no">816</span><span id="line-816"> * @param out destination buffer</span> |
| <span class="source-line-no">817</span><span id="line-817"> */</span> |
| <span class="source-line-no">818</span><span id="line-818"> public static void copyFromBufferToBuffer(ByteBuffer in, ByteBuffer out) {</span> |
| <span class="source-line-no">819</span><span id="line-819"> if (in.hasArray() && out.hasArray()) {</span> |
| <span class="source-line-no">820</span><span id="line-820"> int length = in.remaining();</span> |
| <span class="source-line-no">821</span><span id="line-821"> System.arraycopy(in.array(), in.arrayOffset(), out.array(), out.arrayOffset(), length);</span> |
| <span class="source-line-no">822</span><span id="line-822"> out.position(out.position() + length);</span> |
| <span class="source-line-no">823</span><span id="line-823"> in.position(in.limit());</span> |
| <span class="source-line-no">824</span><span id="line-824"> } else if (UNSAFE_AVAIL) {</span> |
| <span class="source-line-no">825</span><span id="line-825"> int length = in.remaining();</span> |
| <span class="source-line-no">826</span><span id="line-826"> UnsafeAccess.copy(in, in.position(), out, out.position(), length);</span> |
| <span class="source-line-no">827</span><span id="line-827"> out.position(out.position() + length);</span> |
| <span class="source-line-no">828</span><span id="line-828"> in.position(in.limit());</span> |
| <span class="source-line-no">829</span><span id="line-829"> } else {</span> |
| <span class="source-line-no">830</span><span id="line-830"> out.put(in);</span> |
| <span class="source-line-no">831</span><span id="line-831"> }</span> |
| <span class="source-line-no">832</span><span id="line-832"> }</span> |
| <span class="source-line-no">833</span><span id="line-833"></span> |
| <span class="source-line-no">834</span><span id="line-834"> /**</span> |
| <span class="source-line-no">835</span><span id="line-835"> * Copy from one buffer to another from given offset. This will be absolute positional copying and</span> |
| <span class="source-line-no">836</span><span id="line-836"> * won't affect the position of any of the buffers.</span> |
| <span class="source-line-no">837</span><span id="line-837"> * @param in input bytebuffer</span> |
| <span class="source-line-no">838</span><span id="line-838"> * @param out destination bytebuffer</span> |
| <span class="source-line-no">839</span><span id="line-839"> * @param sourceOffset offset of source buffer</span> |
| <span class="source-line-no">840</span><span id="line-840"> * @param destinationOffset offset of destination buffer</span> |
| <span class="source-line-no">841</span><span id="line-841"> * @param length the number of bytes to copy</span> |
| <span class="source-line-no">842</span><span id="line-842"> */</span> |
| <span class="source-line-no">843</span><span id="line-843"> public static void copyFromBufferToBuffer(ByteBuffer in, ByteBuffer out, int sourceOffset,</span> |
| <span class="source-line-no">844</span><span id="line-844"> int destinationOffset, int length) {</span> |
| <span class="source-line-no">845</span><span id="line-845"> if (in.hasArray() && out.hasArray()) {</span> |
| <span class="source-line-no">846</span><span id="line-846"> System.arraycopy(in.array(), sourceOffset + in.arrayOffset(), out.array(),</span> |
| <span class="source-line-no">847</span><span id="line-847"> out.arrayOffset() + destinationOffset, length);</span> |
| <span class="source-line-no">848</span><span id="line-848"> } else if (UNSAFE_AVAIL) {</span> |
| <span class="source-line-no">849</span><span id="line-849"> UnsafeAccess.copy(in, sourceOffset, out, destinationOffset, length);</span> |
| <span class="source-line-no">850</span><span id="line-850"> } else {</span> |
| <span class="source-line-no">851</span><span id="line-851"> ByteBuffer outDup = out.duplicate();</span> |
| <span class="source-line-no">852</span><span id="line-852"> outDup.position(destinationOffset);</span> |
| <span class="source-line-no">853</span><span id="line-853"> ByteBuffer inDup = in.duplicate();</span> |
| <span class="source-line-no">854</span><span id="line-854"> inDup.position(sourceOffset).limit(sourceOffset + length);</span> |
| <span class="source-line-no">855</span><span id="line-855"> outDup.put(inDup);</span> |
| <span class="source-line-no">856</span><span id="line-856"> }</span> |
| <span class="source-line-no">857</span><span id="line-857"> // We used to return a result but disabled; return destinationOffset + length;</span> |
| <span class="source-line-no">858</span><span id="line-858"> }</span> |
| <span class="source-line-no">859</span><span id="line-859"></span> |
| <span class="source-line-no">860</span><span id="line-860"> /**</span> |
| <span class="source-line-no">861</span><span id="line-861"> * Copy from one buffer to another from given offset.</span> |
| <span class="source-line-no">862</span><span id="line-862"> * <p></span> |
| <span class="source-line-no">863</span><span id="line-863"> * Note : This will advance the position marker of {@code out} but not change the position maker</span> |
| <span class="source-line-no">864</span><span id="line-864"> * for {@code in}</span> |
| <span class="source-line-no">865</span><span id="line-865"> * @param in source buffer</span> |
| <span class="source-line-no">866</span><span id="line-866"> * @param out destination buffer</span> |
| <span class="source-line-no">867</span><span id="line-867"> * @param sourceOffset offset in the source buffer</span> |
| <span class="source-line-no">868</span><span id="line-868"> * @param length how many bytes to copy</span> |
| <span class="source-line-no">869</span><span id="line-869"> */</span> |
| <span class="source-line-no">870</span><span id="line-870"> public static void copyFromBufferToBuffer(ByteBuffer in, ByteBuffer out, int sourceOffset,</span> |
| <span class="source-line-no">871</span><span id="line-871"> int length) {</span> |
| <span class="source-line-no">872</span><span id="line-872"> if (in.hasArray() && out.hasArray()) {</span> |
| <span class="source-line-no">873</span><span id="line-873"> System.arraycopy(in.array(), sourceOffset + in.arrayOffset(), out.array(),</span> |
| <span class="source-line-no">874</span><span id="line-874"> out.position() + out.arrayOffset(), length);</span> |
| <span class="source-line-no">875</span><span id="line-875"> skip(out, length);</span> |
| <span class="source-line-no">876</span><span id="line-876"> } else if (UNSAFE_AVAIL) {</span> |
| <span class="source-line-no">877</span><span id="line-877"> UnsafeAccess.copy(in, sourceOffset, out, out.position(), length);</span> |
| <span class="source-line-no">878</span><span id="line-878"> skip(out, length);</span> |
| <span class="source-line-no">879</span><span id="line-879"> } else {</span> |
| <span class="source-line-no">880</span><span id="line-880"> ByteBuffer inDup = in.duplicate();</span> |
| <span class="source-line-no">881</span><span id="line-881"> inDup.position(sourceOffset).limit(sourceOffset + length);</span> |
| <span class="source-line-no">882</span><span id="line-882"> out.put(inDup);</span> |
| <span class="source-line-no">883</span><span id="line-883"> }</span> |
| <span class="source-line-no">884</span><span id="line-884"> }</span> |
| <span class="source-line-no">885</span><span id="line-885"></span> |
| <span class="source-line-no">886</span><span id="line-886"> /**</span> |
| <span class="source-line-no">887</span><span id="line-887"> * Find length of common prefix in two arrays.</span> |
| <span class="source-line-no">888</span><span id="line-888"> * @param left Array to be compared.</span> |
| <span class="source-line-no">889</span><span id="line-889"> * @param leftOffset Offset in left array.</span> |
| <span class="source-line-no">890</span><span id="line-890"> * @param leftLength Length of left array.</span> |
| <span class="source-line-no">891</span><span id="line-891"> * @param right Array to be compared.</span> |
| <span class="source-line-no">892</span><span id="line-892"> * @param rightOffset Offset in right array.</span> |
| <span class="source-line-no">893</span><span id="line-893"> * @param rightLength Length of right array.</span> |
| <span class="source-line-no">894</span><span id="line-894"> */</span> |
| <span class="source-line-no">895</span><span id="line-895"> public static int findCommonPrefix(byte[] left, int leftOffset, int leftLength, byte[] right,</span> |
| <span class="source-line-no">896</span><span id="line-896"> int rightOffset, int rightLength) {</span> |
| <span class="source-line-no">897</span><span id="line-897"> return Bytes.findCommonPrefix(left, right, leftLength, rightLength, leftOffset, rightOffset);</span> |
| <span class="source-line-no">898</span><span id="line-898"> }</span> |
| <span class="source-line-no">899</span><span id="line-899"></span> |
| <span class="source-line-no">900</span><span id="line-900"> /**</span> |
| <span class="source-line-no">901</span><span id="line-901"> * Find length of common prefix in two arrays.</span> |
| <span class="source-line-no">902</span><span id="line-902"> * @param left ByteBuffer to be compared.</span> |
| <span class="source-line-no">903</span><span id="line-903"> * @param leftOffset Offset in left ByteBuffer.</span> |
| <span class="source-line-no">904</span><span id="line-904"> * @param leftLength Length of left ByteBuffer.</span> |
| <span class="source-line-no">905</span><span id="line-905"> * @param right ByteBuffer to be compared.</span> |
| <span class="source-line-no">906</span><span id="line-906"> * @param rightOffset Offset in right ByteBuffer.</span> |
| <span class="source-line-no">907</span><span id="line-907"> * @param rightLength Length of right ByteBuffer.</span> |
| <span class="source-line-no">908</span><span id="line-908"> */</span> |
| <span class="source-line-no">909</span><span id="line-909"> public static int findCommonPrefix(ByteBuffer left, int leftOffset, int leftLength,</span> |
| <span class="source-line-no">910</span><span id="line-910"> ByteBuffer right, int rightOffset, int rightLength) {</span> |
| <span class="source-line-no">911</span><span id="line-911"> return CommonPrefixerHolder.BEST_COMMON_PREFIXER.findCommonPrefix(left, leftOffset, leftLength,</span> |
| <span class="source-line-no">912</span><span id="line-912"> right, rightOffset, rightLength);</span> |
| <span class="source-line-no">913</span><span id="line-913"> }</span> |
| <span class="source-line-no">914</span><span id="line-914"></span> |
| <span class="source-line-no">915</span><span id="line-915"> /**</span> |
| <span class="source-line-no">916</span><span id="line-916"> * Find length of common prefix in two arrays.</span> |
| <span class="source-line-no">917</span><span id="line-917"> * @param left ByteBuffer to be compared.</span> |
| <span class="source-line-no">918</span><span id="line-918"> * @param leftOffset Offset in left ByteBuffer.</span> |
| <span class="source-line-no">919</span><span id="line-919"> * @param leftLength Length of left ByteBuffer.</span> |
| <span class="source-line-no">920</span><span id="line-920"> * @param right Array to be compared</span> |
| <span class="source-line-no">921</span><span id="line-921"> * @param rightOffset Offset in right Array.</span> |
| <span class="source-line-no">922</span><span id="line-922"> * @param rightLength Length of right Array.</span> |
| <span class="source-line-no">923</span><span id="line-923"> */</span> |
| <span class="source-line-no">924</span><span id="line-924"> public static int findCommonPrefix(ByteBuffer left, int leftOffset, int leftLength, byte[] right,</span> |
| <span class="source-line-no">925</span><span id="line-925"> int rightOffset, int rightLength) {</span> |
| <span class="source-line-no">926</span><span id="line-926"> return CommonPrefixerHolder.BEST_COMMON_PREFIXER.findCommonPrefix(left, leftOffset, leftLength,</span> |
| <span class="source-line-no">927</span><span id="line-927"> right, rightOffset, rightLength);</span> |
| <span class="source-line-no">928</span><span id="line-928"> }</span> |
| <span class="source-line-no">929</span><span id="line-929"></span> |
| <span class="source-line-no">930</span><span id="line-930"> /**</span> |
| <span class="source-line-no">931</span><span id="line-931"> * Check whether two parts in the same buffer are equal.</span> |
| <span class="source-line-no">932</span><span id="line-932"> * @param buffer In which buffer there are parts</span> |
| <span class="source-line-no">933</span><span id="line-933"> * @param offsetLeft Beginning of first part.</span> |
| <span class="source-line-no">934</span><span id="line-934"> * @param lengthLeft Length of the first part.</span> |
| <span class="source-line-no">935</span><span id="line-935"> * @param offsetRight Beginning of the second part.</span> |
| <span class="source-line-no">936</span><span id="line-936"> * @param lengthRight Length of the second part.</span> |
| <span class="source-line-no">937</span><span id="line-937"> * @return True if equal</span> |
| <span class="source-line-no">938</span><span id="line-938"> */</span> |
| <span class="source-line-no">939</span><span id="line-939"> public static boolean arePartsEqual(ByteBuffer buffer, int offsetLeft, int lengthLeft,</span> |
| <span class="source-line-no">940</span><span id="line-940"> int offsetRight, int lengthRight) {</span> |
| <span class="source-line-no">941</span><span id="line-941"> if (lengthLeft != lengthRight) {</span> |
| <span class="source-line-no">942</span><span id="line-942"> return false;</span> |
| <span class="source-line-no">943</span><span id="line-943"> }</span> |
| <span class="source-line-no">944</span><span id="line-944"></span> |
| <span class="source-line-no">945</span><span id="line-945"> if (buffer.hasArray()) {</span> |
| <span class="source-line-no">946</span><span id="line-946"> return 0 == Bytes.compareTo(buffer.array(), buffer.arrayOffset() + offsetLeft, lengthLeft,</span> |
| <span class="source-line-no">947</span><span id="line-947"> buffer.array(), buffer.arrayOffset() + offsetRight, lengthRight);</span> |
| <span class="source-line-no">948</span><span id="line-948"> }</span> |
| <span class="source-line-no">949</span><span id="line-949"></span> |
| <span class="source-line-no">950</span><span id="line-950"> for (int i = 0; i < lengthRight; ++i) {</span> |
| <span class="source-line-no">951</span><span id="line-951"> if (buffer.get(offsetLeft + i) != buffer.get(offsetRight + i)) {</span> |
| <span class="source-line-no">952</span><span id="line-952"> return false;</span> |
| <span class="source-line-no">953</span><span id="line-953"> }</span> |
| <span class="source-line-no">954</span><span id="line-954"> }</span> |
| <span class="source-line-no">955</span><span id="line-955"> return true;</span> |
| <span class="source-line-no">956</span><span id="line-956"> }</span> |
| <span class="source-line-no">957</span><span id="line-957"></span> |
| <span class="source-line-no">958</span><span id="line-958"> /**</span> |
| <span class="source-line-no">959</span><span id="line-959"> * Increment position in buffer.</span> |
| <span class="source-line-no">960</span><span id="line-960"> * @param buffer In this buffer.</span> |
| <span class="source-line-no">961</span><span id="line-961"> * @param length By that many bytes.</span> |
| <span class="source-line-no">962</span><span id="line-962"> */</span> |
| <span class="source-line-no">963</span><span id="line-963"> public static void skip(ByteBuffer buffer, int length) {</span> |
| <span class="source-line-no">964</span><span id="line-964"> buffer.position(buffer.position() + length);</span> |
| <span class="source-line-no">965</span><span id="line-965"> }</span> |
| <span class="source-line-no">966</span><span id="line-966"></span> |
| <span class="source-line-no">967</span><span id="line-967"> public static void extendLimit(ByteBuffer buffer, int numBytes) {</span> |
| <span class="source-line-no">968</span><span id="line-968"> buffer.limit(buffer.limit() + numBytes);</span> |
| <span class="source-line-no">969</span><span id="line-969"> }</span> |
| <span class="source-line-no">970</span><span id="line-970"></span> |
| <span class="source-line-no">971</span><span id="line-971"> /**</span> |
| <span class="source-line-no">972</span><span id="line-972"> * Copy the bytes from position to limit into a new byte[] of the exact length and sets the</span> |
| <span class="source-line-no">973</span><span id="line-973"> * position and limit back to their original values (though not thread safe).</span> |
| <span class="source-line-no">974</span><span id="line-974"> * @param buffer copy from here</span> |
| <span class="source-line-no">975</span><span id="line-975"> * @param startPosition put buffer.get(startPosition) into byte[0]</span> |
| <span class="source-line-no">976</span><span id="line-976"> * @return a new byte[] containing the bytes in the specified range</span> |
| <span class="source-line-no">977</span><span id="line-977"> */</span> |
| <span class="source-line-no">978</span><span id="line-978"> public static byte[] toBytes(ByteBuffer buffer, int startPosition) {</span> |
| <span class="source-line-no">979</span><span id="line-979"> int originalPosition = buffer.position();</span> |
| <span class="source-line-no">980</span><span id="line-980"> byte[] output = new byte[buffer.limit() - startPosition];</span> |
| <span class="source-line-no">981</span><span id="line-981"> buffer.position(startPosition);</span> |
| <span class="source-line-no">982</span><span id="line-982"> buffer.get(output);</span> |
| <span class="source-line-no">983</span><span id="line-983"> buffer.position(originalPosition);</span> |
| <span class="source-line-no">984</span><span id="line-984"> return output;</span> |
| <span class="source-line-no">985</span><span id="line-985"> }</span> |
| <span class="source-line-no">986</span><span id="line-986"></span> |
| <span class="source-line-no">987</span><span id="line-987"> /**</span> |
| <span class="source-line-no">988</span><span id="line-988"> * Copy the given number of bytes from specified offset into a new byte[]</span> |
| <span class="source-line-no">989</span><span id="line-989"> * @param buffer input bytebuffer to read</span> |
| <span class="source-line-no">990</span><span id="line-990"> * @param offset input offset where Bytes are</span> |
| <span class="source-line-no">991</span><span id="line-991"> * @param length the number of bytes to read</span> |
| <span class="source-line-no">992</span><span id="line-992"> * @return a new byte[] containing the bytes in the specified range</span> |
| <span class="source-line-no">993</span><span id="line-993"> */</span> |
| <span class="source-line-no">994</span><span id="line-994"> public static byte[] toBytes(ByteBuffer buffer, int offset, int length) {</span> |
| <span class="source-line-no">995</span><span id="line-995"> byte[] output = new byte[length];</span> |
| <span class="source-line-no">996</span><span id="line-996"> for (int i = 0; i < length; i++) {</span> |
| <span class="source-line-no">997</span><span id="line-997"> output[i] = buffer.get(offset + i);</span> |
| <span class="source-line-no">998</span><span id="line-998"> }</span> |
| <span class="source-line-no">999</span><span id="line-999"> return output;</span> |
| <span class="source-line-no">1000</span><span id="line-1000"> }</span> |
| <span class="source-line-no">1001</span><span id="line-1001"></span> |
| <span class="source-line-no">1002</span><span id="line-1002"> public static boolean equals(ByteBuffer buf1, int o1, int l1, ByteBuffer buf2, int o2, int l2) {</span> |
| <span class="source-line-no">1003</span><span id="line-1003"> if ((l1 == 0) || (l2 == 0)) {</span> |
| <span class="source-line-no">1004</span><span id="line-1004"> // both 0 length, return true, or else false</span> |
| <span class="source-line-no">1005</span><span id="line-1005"> return l1 == l2;</span> |
| <span class="source-line-no">1006</span><span id="line-1006"> }</span> |
| <span class="source-line-no">1007</span><span id="line-1007"> // Since we're often comparing adjacent sorted data,</span> |
| <span class="source-line-no">1008</span><span id="line-1008"> // it's usual to have equal arrays except for the very last byte</span> |
| <span class="source-line-no">1009</span><span id="line-1009"> // so check that first</span> |
| <span class="source-line-no">1010</span><span id="line-1010"> if (toByte(buf1, o1 + l1 - 1) != toByte(buf2, o2 + l2 - 1)) {</span> |
| <span class="source-line-no">1011</span><span id="line-1011"> return false;</span> |
| <span class="source-line-no">1012</span><span id="line-1012"> }</span> |
| <span class="source-line-no">1013</span><span id="line-1013"> return compareTo(buf1, o1, l1, buf2, o2, l2) == 0;</span> |
| <span class="source-line-no">1014</span><span id="line-1014"> }</span> |
| <span class="source-line-no">1015</span><span id="line-1015"></span> |
| <span class="source-line-no">1016</span><span id="line-1016"> /**</span> |
| <span class="source-line-no">1017</span><span id="line-1017"> * ByteBuffer to hash offset to start from length to hash</span> |
| <span class="source-line-no">1018</span><span id="line-1018"> */</span> |
| <span class="source-line-no">1019</span><span id="line-1019"> public static int hashCode(ByteBuffer buf, int offset, int length) {</span> |
| <span class="source-line-no">1020</span><span id="line-1020"> int hash = 1;</span> |
| <span class="source-line-no">1021</span><span id="line-1021"> for (int i = offset; i < offset + length; i++) {</span> |
| <span class="source-line-no">1022</span><span id="line-1022"> hash = (31 * hash) + (int) toByte(buf, i);</span> |
| <span class="source-line-no">1023</span><span id="line-1023"> }</span> |
| <span class="source-line-no">1024</span><span id="line-1024"> return hash;</span> |
| <span class="source-line-no">1025</span><span id="line-1025"> }</span> |
| <span class="source-line-no">1026</span><span id="line-1026"></span> |
| <span class="source-line-no">1027</span><span id="line-1027"> public static int compareTo(ByteBuffer buf1, int o1, int l1, ByteBuffer buf2, int o2, int l2) {</span> |
| <span class="source-line-no">1028</span><span id="line-1028"> return ComparerHolder.BEST_COMPARER.compareTo(buf1, o1, l1, buf2, o2, l2);</span> |
| <span class="source-line-no">1029</span><span id="line-1029"> }</span> |
| <span class="source-line-no">1030</span><span id="line-1030"></span> |
| <span class="source-line-no">1031</span><span id="line-1031"> public static boolean equals(ByteBuffer buf1, int o1, int l1, byte[] buf2, int o2, int l2) {</span> |
| <span class="source-line-no">1032</span><span id="line-1032"> if ((l1 == 0) || (l2 == 0)) {</span> |
| <span class="source-line-no">1033</span><span id="line-1033"> // both 0 length, return true, or else false</span> |
| <span class="source-line-no">1034</span><span id="line-1034"> return l1 == l2;</span> |
| <span class="source-line-no">1035</span><span id="line-1035"> }</span> |
| <span class="source-line-no">1036</span><span id="line-1036"> // Since we're often comparing adjacent sorted data,</span> |
| <span class="source-line-no">1037</span><span id="line-1037"> // it's usual to have equal arrays except for the very last byte</span> |
| <span class="source-line-no">1038</span><span id="line-1038"> // so check that first</span> |
| <span class="source-line-no">1039</span><span id="line-1039"> if (toByte(buf1, o1 + l1 - 1) != buf2[o2 + l2 - 1]) {</span> |
| <span class="source-line-no">1040</span><span id="line-1040"> return false;</span> |
| <span class="source-line-no">1041</span><span id="line-1041"> }</span> |
| <span class="source-line-no">1042</span><span id="line-1042"> return compareTo(buf1, o1, l1, buf2, o2, l2) == 0;</span> |
| <span class="source-line-no">1043</span><span id="line-1043"> }</span> |
| <span class="source-line-no">1044</span><span id="line-1044"></span> |
| <span class="source-line-no">1045</span><span id="line-1045"> // The below two methods show up in lots of places. Versions of them in commons util and in</span> |
| <span class="source-line-no">1046</span><span id="line-1046"> // Cassandra. In guava too? They are copied from ByteBufferUtils. They are here as static</span> |
| <span class="source-line-no">1047</span><span id="line-1047"> // privates. Seems to make code smaller and make Hotspot happier (comes of compares and study</span> |
| <span class="source-line-no">1048</span><span id="line-1048"> // of compiled code via jitwatch).</span> |
| <span class="source-line-no">1049</span><span id="line-1049"></span> |
| <span class="source-line-no">1050</span><span id="line-1050"> public static int compareTo(byte[] buf1, int o1, int l1, ByteBuffer buf2, int o2, int l2) {</span> |
| <span class="source-line-no">1051</span><span id="line-1051"> return ComparerHolder.BEST_COMPARER.compareTo(buf1, o1, l1, buf2, o2, l2);</span> |
| <span class="source-line-no">1052</span><span id="line-1052"> }</span> |
| <span class="source-line-no">1053</span><span id="line-1053"></span> |
| <span class="source-line-no">1054</span><span id="line-1054"> public static int compareTo(ByteBuffer buf1, int o1, int l1, byte[] buf2, int o2, int l2) {</span> |
| <span class="source-line-no">1055</span><span id="line-1055"> return compareTo(buf2, o2, l2, buf1, o1, l1) * -1;</span> |
| <span class="source-line-no">1056</span><span id="line-1056"> }</span> |
| <span class="source-line-no">1057</span><span id="line-1057"></span> |
| <span class="source-line-no">1058</span><span id="line-1058"> static int compareToUnsafe(Object obj1, long o1, int l1, Object obj2, long o2, int l2) {</span> |
| <span class="source-line-no">1059</span><span id="line-1059"> final int stride = 8;</span> |
| <span class="source-line-no">1060</span><span id="line-1060"> final int minLength = Math.min(l1, l2);</span> |
| <span class="source-line-no">1061</span><span id="line-1061"> int strideLimit = minLength & ~(stride - 1);</span> |
| <span class="source-line-no">1062</span><span id="line-1062"> int i;</span> |
| <span class="source-line-no">1063</span><span id="line-1063"></span> |
| <span class="source-line-no">1064</span><span id="line-1064"> /*</span> |
| <span class="source-line-no">1065</span><span id="line-1065"> * Compare 8 bytes at a time. Benchmarking shows comparing 8 bytes at a time is no slower than</span> |
| <span class="source-line-no">1066</span><span id="line-1066"> * comparing 4 bytes at a time even on 32-bit. On the other hand, it is substantially faster on</span> |
| <span class="source-line-no">1067</span><span id="line-1067"> * 64-bit.</span> |
| <span class="source-line-no">1068</span><span id="line-1068"> */</span> |
| <span class="source-line-no">1069</span><span id="line-1069"> for (i = 0; i < strideLimit; i += stride) {</span> |
| <span class="source-line-no">1070</span><span id="line-1070"> long lw = HBasePlatformDependent.getLong(obj1, o1 + (long) i);</span> |
| <span class="source-line-no">1071</span><span id="line-1071"> long rw = HBasePlatformDependent.getLong(obj2, o2 + (long) i);</span> |
| <span class="source-line-no">1072</span><span id="line-1072"> if (lw != rw) {</span> |
| <span class="source-line-no">1073</span><span id="line-1073"> if (!UnsafeAccess.LITTLE_ENDIAN) {</span> |
| <span class="source-line-no">1074</span><span id="line-1074"> return ((lw + Long.MIN_VALUE) < (rw + Long.MIN_VALUE)) ? -1 : 1;</span> |
| <span class="source-line-no">1075</span><span id="line-1075"> }</span> |
| <span class="source-line-no">1076</span><span id="line-1076"></span> |
| <span class="source-line-no">1077</span><span id="line-1077"> /*</span> |
| <span class="source-line-no">1078</span><span id="line-1078"> * We want to compare only the first index where left[index] != right[index]. This</span> |
| <span class="source-line-no">1079</span><span id="line-1079"> * corresponds to the least significant nonzero byte in lw ^ rw, since lw and rw are</span> |
| <span class="source-line-no">1080</span><span id="line-1080"> * little-endian. Long.numberOfTrailingZeros(diff) tells us the least significant nonzero</span> |
| <span class="source-line-no">1081</span><span id="line-1081"> * bit, and zeroing out the first three bits of L.nTZ gives us the shift to get that least</span> |
| <span class="source-line-no">1082</span><span id="line-1082"> * significant nonzero byte. This comparison logic is based on UnsignedBytes from guava v21</span> |
| <span class="source-line-no">1083</span><span id="line-1083"> */</span> |
| <span class="source-line-no">1084</span><span id="line-1084"> int n = Long.numberOfTrailingZeros(lw ^ rw) & ~0x7;</span> |
| <span class="source-line-no">1085</span><span id="line-1085"> return ((int) ((lw >>> n) & 0xFF)) - ((int) ((rw >>> n) & 0xFF));</span> |
| <span class="source-line-no">1086</span><span id="line-1086"> }</span> |
| <span class="source-line-no">1087</span><span id="line-1087"> }</span> |
| <span class="source-line-no">1088</span><span id="line-1088"></span> |
| <span class="source-line-no">1089</span><span id="line-1089"> // The epilogue to cover the last (minLength % stride) elements.</span> |
| <span class="source-line-no">1090</span><span id="line-1090"> for (; i < minLength; i++) {</span> |
| <span class="source-line-no">1091</span><span id="line-1091"> int il = (HBasePlatformDependent.getByte(obj1, o1 + i) & 0xFF);</span> |
| <span class="source-line-no">1092</span><span id="line-1092"> int ir = (HBasePlatformDependent.getByte(obj2, o2 + i) & 0xFF);</span> |
| <span class="source-line-no">1093</span><span id="line-1093"> if (il != ir) {</span> |
| <span class="source-line-no">1094</span><span id="line-1094"> return il - ir;</span> |
| <span class="source-line-no">1095</span><span id="line-1095"> }</span> |
| <span class="source-line-no">1096</span><span id="line-1096"> }</span> |
| <span class="source-line-no">1097</span><span id="line-1097"> return l1 - l2;</span> |
| <span class="source-line-no">1098</span><span id="line-1098"> }</span> |
| <span class="source-line-no">1099</span><span id="line-1099"></span> |
| <span class="source-line-no">1100</span><span id="line-1100"> static int findCommonPrefixUnsafe(Object left, long leftOffset, int leftLength, Object right,</span> |
| <span class="source-line-no">1101</span><span id="line-1101"> long rightOffset, int rightLength) {</span> |
| <span class="source-line-no">1102</span><span id="line-1102"> final int stride = 8;</span> |
| <span class="source-line-no">1103</span><span id="line-1103"> final int minLength = Math.min(leftLength, rightLength);</span> |
| <span class="source-line-no">1104</span><span id="line-1104"> int strideLimit = minLength & ~(stride - 1);</span> |
| <span class="source-line-no">1105</span><span id="line-1105"> int result = 0;</span> |
| <span class="source-line-no">1106</span><span id="line-1106"> int i;</span> |
| <span class="source-line-no">1107</span><span id="line-1107"></span> |
| <span class="source-line-no">1108</span><span id="line-1108"> for (i = 0; i < strideLimit; i += stride) {</span> |
| <span class="source-line-no">1109</span><span id="line-1109"> long lw = HBasePlatformDependent.getLong(left, leftOffset + (long) i);</span> |
| <span class="source-line-no">1110</span><span id="line-1110"> long rw = HBasePlatformDependent.getLong(right, rightOffset + (long) i);</span> |
| <span class="source-line-no">1111</span><span id="line-1111"></span> |
| <span class="source-line-no">1112</span><span id="line-1112"> if (lw != rw) {</span> |
| <span class="source-line-no">1113</span><span id="line-1113"> if (!UnsafeAccess.LITTLE_ENDIAN) {</span> |
| <span class="source-line-no">1114</span><span id="line-1114"> return result + (Long.numberOfLeadingZeros(lw ^ rw) / Bytes.SIZEOF_LONG);</span> |
| <span class="source-line-no">1115</span><span id="line-1115"> } else {</span> |
| <span class="source-line-no">1116</span><span id="line-1116"> return result + (Long.numberOfTrailingZeros(lw ^ rw) / Bytes.SIZEOF_LONG);</span> |
| <span class="source-line-no">1117</span><span id="line-1117"> }</span> |
| <span class="source-line-no">1118</span><span id="line-1118"> } else {</span> |
| <span class="source-line-no">1119</span><span id="line-1119"> result += Bytes.SIZEOF_LONG;</span> |
| <span class="source-line-no">1120</span><span id="line-1120"> }</span> |
| <span class="source-line-no">1121</span><span id="line-1121"> }</span> |
| <span class="source-line-no">1122</span><span id="line-1122"></span> |
| <span class="source-line-no">1123</span><span id="line-1123"> // The epilogue to cover the last (minLength % stride) elements.</span> |
| <span class="source-line-no">1124</span><span id="line-1124"> for (; i < minLength; i++) {</span> |
| <span class="source-line-no">1125</span><span id="line-1125"> byte il = HBasePlatformDependent.getByte(left, leftOffset + i);</span> |
| <span class="source-line-no">1126</span><span id="line-1126"> byte ir = HBasePlatformDependent.getByte(right, rightOffset + i);</span> |
| <span class="source-line-no">1127</span><span id="line-1127"> if (il != ir) {</span> |
| <span class="source-line-no">1128</span><span id="line-1128"> return result;</span> |
| <span class="source-line-no">1129</span><span id="line-1129"> } else {</span> |
| <span class="source-line-no">1130</span><span id="line-1130"> result++;</span> |
| <span class="source-line-no">1131</span><span id="line-1131"> }</span> |
| <span class="source-line-no">1132</span><span id="line-1132"> }</span> |
| <span class="source-line-no">1133</span><span id="line-1133"></span> |
| <span class="source-line-no">1134</span><span id="line-1134"> return result;</span> |
| <span class="source-line-no">1135</span><span id="line-1135"> }</span> |
| <span class="source-line-no">1136</span><span id="line-1136"></span> |
| <span class="source-line-no">1137</span><span id="line-1137"> /**</span> |
| <span class="source-line-no">1138</span><span id="line-1138"> * Reads a short value at the given buffer's offset.</span> |
| <span class="source-line-no">1139</span><span id="line-1139"> * @param buffer input byte buffer to read</span> |
| <span class="source-line-no">1140</span><span id="line-1140"> * @param offset input offset where short is</span> |
| <span class="source-line-no">1141</span><span id="line-1141"> * @return short value at offset</span> |
| <span class="source-line-no">1142</span><span id="line-1142"> */</span> |
| <span class="source-line-no">1143</span><span id="line-1143"> public static short toShort(ByteBuffer buffer, int offset) {</span> |
| <span class="source-line-no">1144</span><span id="line-1144"> return ConverterHolder.BEST_CONVERTER.toShort(buffer, offset);</span> |
| <span class="source-line-no">1145</span><span id="line-1145"> }</span> |
| <span class="source-line-no">1146</span><span id="line-1146"></span> |
| <span class="source-line-no">1147</span><span id="line-1147"> /**</span> |
| <span class="source-line-no">1148</span><span id="line-1148"> * Reads an int value at the given buffer's current position. Also advances the buffer's position</span> |
| <span class="source-line-no">1149</span><span id="line-1149"> */</span> |
| <span class="source-line-no">1150</span><span id="line-1150"> public static int toInt(ByteBuffer buffer) {</span> |
| <span class="source-line-no">1151</span><span id="line-1151"> return ConverterHolder.BEST_CONVERTER.toInt(buffer);</span> |
| <span class="source-line-no">1152</span><span id="line-1152"> }</span> |
| <span class="source-line-no">1153</span><span id="line-1153"></span> |
| <span class="source-line-no">1154</span><span id="line-1154"> /**</span> |
| <span class="source-line-no">1155</span><span id="line-1155"> * Reads an int value at the given buffer's offset.</span> |
| <span class="source-line-no">1156</span><span id="line-1156"> * @param buffer input byte buffer to read</span> |
| <span class="source-line-no">1157</span><span id="line-1157"> * @param offset input offset where int is</span> |
| <span class="source-line-no">1158</span><span id="line-1158"> * @return int value at offset</span> |
| <span class="source-line-no">1159</span><span id="line-1159"> */</span> |
| <span class="source-line-no">1160</span><span id="line-1160"> public static int toInt(ByteBuffer buffer, int offset) {</span> |
| <span class="source-line-no">1161</span><span id="line-1161"> return ConverterHolder.BEST_CONVERTER.toInt(buffer, offset);</span> |
| <span class="source-line-no">1162</span><span id="line-1162"> }</span> |
| <span class="source-line-no">1163</span><span id="line-1163"></span> |
| <span class="source-line-no">1164</span><span id="line-1164"> /**</span> |
| <span class="source-line-no">1165</span><span id="line-1165"> * Converts a ByteBuffer to an int value</span> |
| <span class="source-line-no">1166</span><span id="line-1166"> * @param buf The ByteBuffer</span> |
| <span class="source-line-no">1167</span><span id="line-1167"> * @param offset Offset to int value</span> |
| <span class="source-line-no">1168</span><span id="line-1168"> * @param length Number of bytes used to store the int value.</span> |
| <span class="source-line-no">1169</span><span id="line-1169"> * @return the int value if there's not enough bytes left in the buffer after the given offset</span> |
| <span class="source-line-no">1170</span><span id="line-1170"> */</span> |
| <span class="source-line-no">1171</span><span id="line-1171"> public static int readAsInt(ByteBuffer buf, int offset, final int length) {</span> |
| <span class="source-line-no">1172</span><span id="line-1172"> if (offset + length > buf.limit()) {</span> |
| <span class="source-line-no">1173</span><span id="line-1173"> throw new IllegalArgumentException("offset (" + offset + ") + length (" + length</span> |
| <span class="source-line-no">1174</span><span id="line-1174"> + ") exceed the" + " limit of the buffer: " + buf.limit());</span> |
| <span class="source-line-no">1175</span><span id="line-1175"> }</span> |
| <span class="source-line-no">1176</span><span id="line-1176"> int n = 0;</span> |
| <span class="source-line-no">1177</span><span id="line-1177"> for (int i = offset; i < (offset + length); i++) {</span> |
| <span class="source-line-no">1178</span><span id="line-1178"> n <<= 8;</span> |
| <span class="source-line-no">1179</span><span id="line-1179"> n ^= toByte(buf, i) & 0xFF;</span> |
| <span class="source-line-no">1180</span><span id="line-1180"> }</span> |
| <span class="source-line-no">1181</span><span id="line-1181"> return n;</span> |
| <span class="source-line-no">1182</span><span id="line-1182"> }</span> |
| <span class="source-line-no">1183</span><span id="line-1183"></span> |
| <span class="source-line-no">1184</span><span id="line-1184"> /**</span> |
| <span class="source-line-no">1185</span><span id="line-1185"> * Reads a long value at the given buffer's offset.</span> |
| <span class="source-line-no">1186</span><span id="line-1186"> * @param buffer input byte buffer to read</span> |
| <span class="source-line-no">1187</span><span id="line-1187"> * @param offset input offset where Long is</span> |
| <span class="source-line-no">1188</span><span id="line-1188"> * @return long value at offset</span> |
| <span class="source-line-no">1189</span><span id="line-1189"> */</span> |
| <span class="source-line-no">1190</span><span id="line-1190"> public static long toLong(ByteBuffer buffer, int offset) {</span> |
| <span class="source-line-no">1191</span><span id="line-1191"> return ConverterHolder.BEST_CONVERTER.toLong(buffer, offset);</span> |
| <span class="source-line-no">1192</span><span id="line-1192"> }</span> |
| <span class="source-line-no">1193</span><span id="line-1193"></span> |
| <span class="source-line-no">1194</span><span id="line-1194"> /**</span> |
| <span class="source-line-no">1195</span><span id="line-1195"> * Put an int value out to the given ByteBuffer's current position in big-endian format. This also</span> |
| <span class="source-line-no">1196</span><span id="line-1196"> * advances the position in buffer by int size.</span> |
| <span class="source-line-no">1197</span><span id="line-1197"> * @param buffer the ByteBuffer to write to</span> |
| <span class="source-line-no">1198</span><span id="line-1198"> * @param val int to write out</span> |
| <span class="source-line-no">1199</span><span id="line-1199"> */</span> |
| <span class="source-line-no">1200</span><span id="line-1200"> public static void putInt(ByteBuffer buffer, int val) {</span> |
| <span class="source-line-no">1201</span><span id="line-1201"> ConverterHolder.BEST_CONVERTER.putInt(buffer, val);</span> |
| <span class="source-line-no">1202</span><span id="line-1202"> }</span> |
| <span class="source-line-no">1203</span><span id="line-1203"></span> |
| <span class="source-line-no">1204</span><span id="line-1204"> public static int putInt(ByteBuffer buffer, int index, int val) {</span> |
| <span class="source-line-no">1205</span><span id="line-1205"> return ConverterHolder.BEST_CONVERTER.putInt(buffer, index, val);</span> |
| <span class="source-line-no">1206</span><span id="line-1206"> }</span> |
| <span class="source-line-no">1207</span><span id="line-1207"></span> |
| <span class="source-line-no">1208</span><span id="line-1208"> /**</span> |
| <span class="source-line-no">1209</span><span id="line-1209"> * Reads a double value at the given buffer's offset.</span> |
| <span class="source-line-no">1210</span><span id="line-1210"> * @param buffer input byte buffer to read</span> |
| <span class="source-line-no">1211</span><span id="line-1211"> * @param offset offset where double is</span> |
| <span class="source-line-no">1212</span><span id="line-1212"> * @return double value at offset</span> |
| <span class="source-line-no">1213</span><span id="line-1213"> */</span> |
| <span class="source-line-no">1214</span><span id="line-1214"> public static double toDouble(ByteBuffer buffer, int offset) {</span> |
| <span class="source-line-no">1215</span><span id="line-1215"> return Double.longBitsToDouble(toLong(buffer, offset));</span> |
| <span class="source-line-no">1216</span><span id="line-1216"> }</span> |
| <span class="source-line-no">1217</span><span id="line-1217"></span> |
| <span class="source-line-no">1218</span><span id="line-1218"> /**</span> |
| <span class="source-line-no">1219</span><span id="line-1219"> * Reads a BigDecimal value at the given buffer's offset.</span> |
| <span class="source-line-no">1220</span><span id="line-1220"> * @param buffer input bytebuffer to read</span> |
| <span class="source-line-no">1221</span><span id="line-1221"> * @param offset input offset</span> |
| <span class="source-line-no">1222</span><span id="line-1222"> * @return BigDecimal value at offset</span> |
| <span class="source-line-no">1223</span><span id="line-1223"> */</span> |
| <span class="source-line-no">1224</span><span id="line-1224"> public static BigDecimal toBigDecimal(ByteBuffer buffer, int offset, int length) {</span> |
| <span class="source-line-no">1225</span><span id="line-1225"> if (buffer == null || length < Bytes.SIZEOF_INT + 1 || (offset + length > buffer.limit())) {</span> |
| <span class="source-line-no">1226</span><span id="line-1226"> return null;</span> |
| <span class="source-line-no">1227</span><span id="line-1227"> }</span> |
| <span class="source-line-no">1228</span><span id="line-1228"></span> |
| <span class="source-line-no">1229</span><span id="line-1229"> int scale = toInt(buffer, offset);</span> |
| <span class="source-line-no">1230</span><span id="line-1230"> byte[] tcBytes = new byte[length - Bytes.SIZEOF_INT];</span> |
| <span class="source-line-no">1231</span><span id="line-1231"> copyFromBufferToArray(tcBytes, buffer, offset + Bytes.SIZEOF_INT, 0, length - Bytes.SIZEOF_INT);</span> |
| <span class="source-line-no">1232</span><span id="line-1232"> return new BigDecimal(new BigInteger(tcBytes), scale);</span> |
| <span class="source-line-no">1233</span><span id="line-1233"> }</span> |
| <span class="source-line-no">1234</span><span id="line-1234"></span> |
| <span class="source-line-no">1235</span><span id="line-1235"> /**</span> |
| <span class="source-line-no">1236</span><span id="line-1236"> * Put a short value out to the given ByteBuffer's current position in big-endian format. This</span> |
| <span class="source-line-no">1237</span><span id="line-1237"> * also advances the position in buffer by short size.</span> |
| <span class="source-line-no">1238</span><span id="line-1238"> * @param buffer the ByteBuffer to write to</span> |
| <span class="source-line-no">1239</span><span id="line-1239"> * @param val short to write out</span> |
| <span class="source-line-no">1240</span><span id="line-1240"> */</span> |
| <span class="source-line-no">1241</span><span id="line-1241"> public static void putShort(ByteBuffer buffer, short val) {</span> |
| <span class="source-line-no">1242</span><span id="line-1242"> ConverterHolder.BEST_CONVERTER.putShort(buffer, val);</span> |
| <span class="source-line-no">1243</span><span id="line-1243"> }</span> |
| <span class="source-line-no">1244</span><span id="line-1244"></span> |
| <span class="source-line-no">1245</span><span id="line-1245"> public static int putShort(ByteBuffer buffer, int index, short val) {</span> |
| <span class="source-line-no">1246</span><span id="line-1246"> return ConverterHolder.BEST_CONVERTER.putShort(buffer, index, val);</span> |
| <span class="source-line-no">1247</span><span id="line-1247"> }</span> |
| <span class="source-line-no">1248</span><span id="line-1248"></span> |
| <span class="source-line-no">1249</span><span id="line-1249"> public static int putAsShort(ByteBuffer buf, int index, int val) {</span> |
| <span class="source-line-no">1250</span><span id="line-1250"> buf.put(index + 1, (byte) val);</span> |
| <span class="source-line-no">1251</span><span id="line-1251"> val >>= 8;</span> |
| <span class="source-line-no">1252</span><span id="line-1252"> buf.put(index, (byte) val);</span> |
| <span class="source-line-no">1253</span><span id="line-1253"> return index + Bytes.SIZEOF_SHORT;</span> |
| <span class="source-line-no">1254</span><span id="line-1254"> }</span> |
| <span class="source-line-no">1255</span><span id="line-1255"></span> |
| <span class="source-line-no">1256</span><span id="line-1256"> /**</span> |
| <span class="source-line-no">1257</span><span id="line-1257"> * Put a long value out to the given ByteBuffer's current position in big-endian format. This also</span> |
| <span class="source-line-no">1258</span><span id="line-1258"> * advances the position in buffer by long size.</span> |
| <span class="source-line-no">1259</span><span id="line-1259"> * @param buffer the ByteBuffer to write to</span> |
| <span class="source-line-no">1260</span><span id="line-1260"> * @param val long to write out</span> |
| <span class="source-line-no">1261</span><span id="line-1261"> */</span> |
| <span class="source-line-no">1262</span><span id="line-1262"> public static void putLong(ByteBuffer buffer, long val) {</span> |
| <span class="source-line-no">1263</span><span id="line-1263"> ConverterHolder.BEST_CONVERTER.putLong(buffer, val);</span> |
| <span class="source-line-no">1264</span><span id="line-1264"> }</span> |
| <span class="source-line-no">1265</span><span id="line-1265"></span> |
| <span class="source-line-no">1266</span><span id="line-1266"> public static int putLong(ByteBuffer buffer, int index, long val) {</span> |
| <span class="source-line-no">1267</span><span id="line-1267"> return ConverterHolder.BEST_CONVERTER.putLong(buffer, index, val);</span> |
| <span class="source-line-no">1268</span><span id="line-1268"> }</span> |
| <span class="source-line-no">1269</span><span id="line-1269"></span> |
| <span class="source-line-no">1270</span><span id="line-1270"> /**</span> |
| <span class="source-line-no">1271</span><span id="line-1271"> * Copies the bytes from given array's offset to length part into the given buffer. Puts the bytes</span> |
| <span class="source-line-no">1272</span><span id="line-1272"> * to buffer's current position. This also advances the position in the 'out' buffer by 'length'</span> |
| <span class="source-line-no">1273</span><span id="line-1273"> * @param out output bytebuffer to copy to</span> |
| <span class="source-line-no">1274</span><span id="line-1274"> * @param in input array to copy from</span> |
| <span class="source-line-no">1275</span><span id="line-1275"> * @param inOffset input offset to copy from</span> |
| <span class="source-line-no">1276</span><span id="line-1276"> * @param length the number of bytes to copy</span> |
| <span class="source-line-no">1277</span><span id="line-1277"> */</span> |
| <span class="source-line-no">1278</span><span id="line-1278"> public static void copyFromArrayToBuffer(ByteBuffer out, byte[] in, int inOffset, int length) {</span> |
| <span class="source-line-no">1279</span><span id="line-1279"> if (out.hasArray()) {</span> |
| <span class="source-line-no">1280</span><span id="line-1280"> System.arraycopy(in, inOffset, out.array(), out.arrayOffset() + out.position(), length);</span> |
| <span class="source-line-no">1281</span><span id="line-1281"> // Move the position in out by length</span> |
| <span class="source-line-no">1282</span><span id="line-1282"> out.position(out.position() + length);</span> |
| <span class="source-line-no">1283</span><span id="line-1283"> } else if (UNSAFE_AVAIL) {</span> |
| <span class="source-line-no">1284</span><span id="line-1284"> UnsafeAccess.copy(in, inOffset, out, out.position(), length);</span> |
| <span class="source-line-no">1285</span><span id="line-1285"> // Move the position in out by length</span> |
| <span class="source-line-no">1286</span><span id="line-1286"> out.position(out.position() + length);</span> |
| <span class="source-line-no">1287</span><span id="line-1287"> } else {</span> |
| <span class="source-line-no">1288</span><span id="line-1288"> out.put(in, inOffset, length);</span> |
| <span class="source-line-no">1289</span><span id="line-1289"> }</span> |
| <span class="source-line-no">1290</span><span id="line-1290"> }</span> |
| <span class="source-line-no">1291</span><span id="line-1291"></span> |
| <span class="source-line-no">1292</span><span id="line-1292"> /**</span> |
| <span class="source-line-no">1293</span><span id="line-1293"> * Copies bytes from given array's offset to length part into the given buffer. Puts the bytes to</span> |
| <span class="source-line-no">1294</span><span id="line-1294"> * buffer's given position. This doesn't affect the position of buffer.</span> |
| <span class="source-line-no">1295</span><span id="line-1295"> * @param out output bytebuffer to copy to</span> |
| <span class="source-line-no">1296</span><span id="line-1296"> * @param outOffset output buffer offset</span> |
| <span class="source-line-no">1297</span><span id="line-1297"> * @param in input array to copy from</span> |
| <span class="source-line-no">1298</span><span id="line-1298"> * @param inOffset input offset to copy from</span> |
| <span class="source-line-no">1299</span><span id="line-1299"> * @param length the number of bytes to copy</span> |
| <span class="source-line-no">1300</span><span id="line-1300"> */</span> |
| <span class="source-line-no">1301</span><span id="line-1301"> public static void copyFromArrayToBuffer(ByteBuffer out, int outOffset, byte[] in, int inOffset,</span> |
| <span class="source-line-no">1302</span><span id="line-1302"> int length) {</span> |
| <span class="source-line-no">1303</span><span id="line-1303"> if (out.hasArray()) {</span> |
| <span class="source-line-no">1304</span><span id="line-1304"> System.arraycopy(in, inOffset, out.array(), out.arrayOffset() + outOffset, length);</span> |
| <span class="source-line-no">1305</span><span id="line-1305"> } else if (UNSAFE_AVAIL) {</span> |
| <span class="source-line-no">1306</span><span id="line-1306"> UnsafeAccess.copy(in, inOffset, out, outOffset, length);</span> |
| <span class="source-line-no">1307</span><span id="line-1307"> } else {</span> |
| <span class="source-line-no">1308</span><span id="line-1308"> ByteBuffer outDup = out.duplicate();</span> |
| <span class="source-line-no">1309</span><span id="line-1309"> outDup.position(outOffset);</span> |
| <span class="source-line-no">1310</span><span id="line-1310"> outDup.put(in, inOffset, length);</span> |
| <span class="source-line-no">1311</span><span id="line-1311"> }</span> |
| <span class="source-line-no">1312</span><span id="line-1312"> }</span> |
| <span class="source-line-no">1313</span><span id="line-1313"></span> |
| <span class="source-line-no">1314</span><span id="line-1314"> /**</span> |
| <span class="source-line-no">1315</span><span id="line-1315"> * Copies specified number of bytes from given offset of 'in' ByteBuffer to the array. This</span> |
| <span class="source-line-no">1316</span><span id="line-1316"> * doesn't affect the position of buffer.</span> |
| <span class="source-line-no">1317</span><span id="line-1317"> * @param out output array to copy input bytebuffer to</span> |
| <span class="source-line-no">1318</span><span id="line-1318"> * @param in input bytebuffer to copy from</span> |
| <span class="source-line-no">1319</span><span id="line-1319"> * @param sourceOffset offset of source bytebuffer</span> |
| <span class="source-line-no">1320</span><span id="line-1320"> * @param destinationOffset offset of destination array</span> |
| <span class="source-line-no">1321</span><span id="line-1321"> * @param length the number of bytes to copy</span> |
| <span class="source-line-no">1322</span><span id="line-1322"> */</span> |
| <span class="source-line-no">1323</span><span id="line-1323"> public static void copyFromBufferToArray(byte[] out, ByteBuffer in, int sourceOffset,</span> |
| <span class="source-line-no">1324</span><span id="line-1324"> int destinationOffset, int length) {</span> |
| <span class="source-line-no">1325</span><span id="line-1325"> if (in.hasArray()) {</span> |
| <span class="source-line-no">1326</span><span id="line-1326"> System.arraycopy(in.array(), sourceOffset + in.arrayOffset(), out, destinationOffset, length);</span> |
| <span class="source-line-no">1327</span><span id="line-1327"> } else if (UNSAFE_AVAIL) {</span> |
| <span class="source-line-no">1328</span><span id="line-1328"> UnsafeAccess.copy(in, sourceOffset, out, destinationOffset, length);</span> |
| <span class="source-line-no">1329</span><span id="line-1329"> } else {</span> |
| <span class="source-line-no">1330</span><span id="line-1330"> ByteBuffer inDup = in.duplicate();</span> |
| <span class="source-line-no">1331</span><span id="line-1331"> inDup.position(sourceOffset);</span> |
| <span class="source-line-no">1332</span><span id="line-1332"> inDup.get(out, destinationOffset, length);</span> |
| <span class="source-line-no">1333</span><span id="line-1333"> }</span> |
| <span class="source-line-no">1334</span><span id="line-1334"> }</span> |
| <span class="source-line-no">1335</span><span id="line-1335"></span> |
| <span class="source-line-no">1336</span><span id="line-1336"> /**</span> |
| <span class="source-line-no">1337</span><span id="line-1337"> * Similar to {@link Arrays#copyOfRange(byte[], int, int)}</span> |
| <span class="source-line-no">1338</span><span id="line-1338"> * @param original the buffer from which the copy has to happen</span> |
| <span class="source-line-no">1339</span><span id="line-1339"> * @param from the starting index</span> |
| <span class="source-line-no">1340</span><span id="line-1340"> * @param to the ending index</span> |
| <span class="source-line-no">1341</span><span id="line-1341"> * @return a byte[] created out of the copy</span> |
| <span class="source-line-no">1342</span><span id="line-1342"> */</span> |
| <span class="source-line-no">1343</span><span id="line-1343"> public static byte[] copyOfRange(ByteBuffer original, int from, int to) {</span> |
| <span class="source-line-no">1344</span><span id="line-1344"> int newLength = to - from;</span> |
| <span class="source-line-no">1345</span><span id="line-1345"> if (newLength < 0) {</span> |
| <span class="source-line-no">1346</span><span id="line-1346"> throw new IllegalArgumentException(from + " > " + to);</span> |
| <span class="source-line-no">1347</span><span id="line-1347"> }</span> |
| <span class="source-line-no">1348</span><span id="line-1348"> byte[] copy = new byte[newLength];</span> |
| <span class="source-line-no">1349</span><span id="line-1349"> ByteBufferUtils.copyFromBufferToArray(copy, original, from, 0, newLength);</span> |
| <span class="source-line-no">1350</span><span id="line-1350"> return copy;</span> |
| <span class="source-line-no">1351</span><span id="line-1351"> }</span> |
| <span class="source-line-no">1352</span><span id="line-1352"></span> |
| <span class="source-line-no">1353</span><span id="line-1353"> // For testing purpose</span> |
| <span class="source-line-no">1354</span><span id="line-1354"> public static String toStringBinary(final ByteBuffer b, int off, int len) {</span> |
| <span class="source-line-no">1355</span><span id="line-1355"> StringBuilder result = new StringBuilder();</span> |
| <span class="source-line-no">1356</span><span id="line-1356"> // Just in case we are passed a 'len' that is > buffer length...</span> |
| <span class="source-line-no">1357</span><span id="line-1357"> if (off >= b.capacity()) {</span> |
| <span class="source-line-no">1358</span><span id="line-1358"> return result.toString();</span> |
| <span class="source-line-no">1359</span><span id="line-1359"> }</span> |
| <span class="source-line-no">1360</span><span id="line-1360"> if (off + len > b.capacity()) {</span> |
| <span class="source-line-no">1361</span><span id="line-1361"> len = b.capacity() - off;</span> |
| <span class="source-line-no">1362</span><span id="line-1362"> }</span> |
| <span class="source-line-no">1363</span><span id="line-1363"> for (int i = off; i < off + len; ++i) {</span> |
| <span class="source-line-no">1364</span><span id="line-1364"> int ch = b.get(i) & 0xFF;</span> |
| <span class="source-line-no">1365</span><span id="line-1365"> if (</span> |
| <span class="source-line-no">1366</span><span id="line-1366"> (ch >= '0' && ch <= '9') || (ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z')</span> |
| <span class="source-line-no">1367</span><span id="line-1367"> || " `~!@#$%^&*()-_=+[]{}|;:'\",.<>/?".indexOf(ch) >= 0</span> |
| <span class="source-line-no">1368</span><span id="line-1368"> ) {</span> |
| <span class="source-line-no">1369</span><span id="line-1369"> result.append((char) ch);</span> |
| <span class="source-line-no">1370</span><span id="line-1370"> } else {</span> |
| <span class="source-line-no">1371</span><span id="line-1371"> result.append(String.format("\\x%02X", ch));</span> |
| <span class="source-line-no">1372</span><span id="line-1372"> }</span> |
| <span class="source-line-no">1373</span><span id="line-1373"> }</span> |
| <span class="source-line-no">1374</span><span id="line-1374"> return result.toString();</span> |
| <span class="source-line-no">1375</span><span id="line-1375"> }</span> |
| <span class="source-line-no">1376</span><span id="line-1376"></span> |
| <span class="source-line-no">1377</span><span id="line-1377"> public static String toStringBinary(final ByteBuffer b) {</span> |
| <span class="source-line-no">1378</span><span id="line-1378"> return toStringBinary(b, 0, b.capacity());</span> |
| <span class="source-line-no">1379</span><span id="line-1379"> }</span> |
| <span class="source-line-no">1380</span><span id="line-1380"></span> |
| <span class="source-line-no">1381</span><span id="line-1381"> /**</span> |
| <span class="source-line-no">1382</span><span id="line-1382"> * Find index of passed delimiter.</span> |
| <span class="source-line-no">1383</span><span id="line-1383"> * @return Index of delimiter having started from start of <code>b</code> moving rightward.</span> |
| <span class="source-line-no">1384</span><span id="line-1384"> */</span> |
| <span class="source-line-no">1385</span><span id="line-1385"> public static int searchDelimiterIndex(ByteBuffer b, int offset, final int length,</span> |
| <span class="source-line-no">1386</span><span id="line-1386"> final int delimiter) {</span> |
| <span class="source-line-no">1387</span><span id="line-1387"> for (int i = offset, n = offset + length; i < n; i++) {</span> |
| <span class="source-line-no">1388</span><span id="line-1388"> if (b.get(i) == delimiter) {</span> |
| <span class="source-line-no">1389</span><span id="line-1389"> return i;</span> |
| <span class="source-line-no">1390</span><span id="line-1390"> }</span> |
| <span class="source-line-no">1391</span><span id="line-1391"> }</span> |
| <span class="source-line-no">1392</span><span id="line-1392"> return -1;</span> |
| <span class="source-line-no">1393</span><span id="line-1393"> }</span> |
| <span class="source-line-no">1394</span><span id="line-1394"></span> |
| <span class="source-line-no">1395</span><span id="line-1395"> /**</span> |
| <span class="source-line-no">1396</span><span id="line-1396"> * Find index of passed delimiter walking from end of buffer backwards.</span> |
| <span class="source-line-no">1397</span><span id="line-1397"> * @return Index of delimiter</span> |
| <span class="source-line-no">1398</span><span id="line-1398"> */</span> |
| <span class="source-line-no">1399</span><span id="line-1399"> public static int searchDelimiterIndexInReverse(ByteBuffer b, int offset, int length,</span> |
| <span class="source-line-no">1400</span><span id="line-1400"> int delimiter) {</span> |
| <span class="source-line-no">1401</span><span id="line-1401"> for (int i = offset + length - 1; i >= offset; i--) {</span> |
| <span class="source-line-no">1402</span><span id="line-1402"> if (b.get(i) == delimiter) {</span> |
| <span class="source-line-no">1403</span><span id="line-1403"> return i;</span> |
| <span class="source-line-no">1404</span><span id="line-1404"> }</span> |
| <span class="source-line-no">1405</span><span id="line-1405"> }</span> |
| <span class="source-line-no">1406</span><span id="line-1406"> return -1;</span> |
| <span class="source-line-no">1407</span><span id="line-1407"> }</span> |
| <span class="source-line-no">1408</span><span id="line-1408">}</span> |
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| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
