<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="null" lang="null"> <head> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1" /><title>HttpVersion xref</title> <link type="text/css" rel="stylesheet" href="../../../../stylesheet.css" /> </head> <body> <div id="overview"><a href="../../../../../apidocs/org/apache/commons/httpclient/HttpVersion.html">View Javadoc</a></div><pre> <a name="1" href="#1">1</a> <em class="comment">/*</em> <a name="2" href="#2">2</a> <em class="comment"> * $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//httpclient/src/java/org/apache/commons/httpclient/HttpVersion.java,v 1.6 2004/12/20 19:52:50 olegk Exp $</em> <a name="3" href="#3">3</a> <em class="comment"> * $Revision: 480424 $</em> <a name="4" href="#4">4</a> <em class="comment"> * $Date: 2006-11-29 06:56:49 +0100 (Wed, 29 Nov 2006) $</em> <a name="5" href="#5">5</a> <em class="comment"> *</em> <a name="6" href="#6">6</a> <em class="comment"> * ====================================================================</em> <a name="7" href="#7">7</a> <em class="comment"> *</em> <a name="8" href="#8">8</a> <em class="comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em> <a name="9" href="#9">9</a> <em class="comment"> * contributor license agreements. See the NOTICE file distributed with</em> <a name="10" href="#10">10</a> <em class="comment"> * this work for additional information regarding copyright ownership.</em> <a name="11" href="#11">11</a> <em class="comment"> * The ASF licenses this file to You under the Apache License, Version 2.0</em> <a name="12" href="#12">12</a> <em class="comment"> * (the "License"); you may not use this file except in compliance with</em> <a name="13" href="#13">13</a> <em class="comment"> * the License. You may obtain a copy of the License at</em> <a name="14" href="#14">14</a> <em class="comment"> *</em> <a name="15" href="#15">15</a> <em class="comment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em> <a name="16" href="#16">16</a> <em class="comment"> *</em> <a name="17" href="#17">17</a> <em class="comment"> * Unless required by applicable law or agreed to in writing, software</em> <a name="18" href="#18">18</a> <em class="comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em> <a name="19" href="#19">19</a> <em class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em> <a name="20" href="#20">20</a> <em class="comment"> * See the License for the specific language governing permissions and</em> <a name="21" href="#21">21</a> <em class="comment"> * limitations under the License.</em> <a name="22" href="#22">22</a> <em class="comment"> * ====================================================================</em> <a name="23" href="#23">23</a> <em class="comment"> *</em> <a name="24" href="#24">24</a> <em class="comment"> * This software consists of voluntary contributions made by many</em> <a name="25" href="#25">25</a> <em class="comment"> * individuals on behalf of the Apache Software Foundation. For more</em> <a name="26" href="#26">26</a> <em class="comment"> * information on the Apache Software Foundation, please see</em> <a name="27" href="#27">27</a> <em class="comment"> * <<a href="http://www.apache.org/" target="alexandria_uri">http://www.apache.org/</a>>.</em> <a name="28" href="#28">28</a> <em class="comment"> *</em> <a name="29" href="#29">29</a> <em class="comment"> */</em> <a name="30" href="#30">30</a> <a name="31" href="#31">31</a> <strong>package</strong> org.apache.commons.httpclient; <a name="32" href="#32">32</a> <a name="33" href="#33">33</a> <em>/**</em> <a name="34" href="#34">34</a> <em> * <p>HTTP version, as specified in RFC 2616.</p></em> <a name="35" href="#35">35</a> <em> * <p></em> <a name="36" href="#36">36</a> <em> * HTTP uses a "&lt;major&gt;.&lt;minor&gt;" numbering scheme to indicate</em> <a name="37" href="#37">37</a> <em> * versions of the protocol. The protocol versioning policy is intended to</em> <a name="38" href="#38">38</a> <em> * allow the sender to indicate the format of a message and its capacity for</em> <a name="39" href="#39">39</a> <em> * understanding further HTTP communication, rather than the features</em> <a name="40" href="#40">40</a> <em> * obtained via that communication. No change is made to the version</em> <a name="41" href="#41">41</a> <em> * number for the addition of message components which do not affect</em> <a name="42" href="#42">42</a> <em> * communication behavior or which only add to extensible field values.</em> <a name="43" href="#43">43</a> <em> * The &lt;minor&gt; number is incremented when the changes made to the</em> <a name="44" href="#44">44</a> <em> * protocol add features which do not change the general message parsing</em> <a name="45" href="#45">45</a> <em> * algorithm, but which may add to the message semantics and imply</em> <a name="46" href="#46">46</a> <em> * additional capabilities of the sender. The &lt;major&gt; number is</em> <a name="47" href="#47">47</a> <em> * incremented when the format of a message within the protocol is</em> <a name="48" href="#48">48</a> <em> * changed. See RFC 2145 [36] for a fuller explanation.</em> <a name="49" href="#49">49</a> <em> * </p></em> <a name="50" href="#50">50</a> <em> * <p></em> <a name="51" href="#51">51</a> <em> * The version of an HTTP message is indicated by an HTTP-Version field</em> <a name="52" href="#52">52</a> <em> * in the first line of the message.</em> <a name="53" href="#53">53</a> <em> * </p></em> <a name="54" href="#54">54</a> <em> * <pre></em> <a name="55" href="#55">55</a> <em> * HTTP-Version = "HTTP" "/" 1*DIGIT "." 1*DIGIT</em> <a name="56" href="#56">56</a> <em> * </pre></em> <a name="57" href="#57">57</a> <em> * <p></em> <a name="58" href="#58">58</a> <em> * Note that the major and minor numbers MUST be treated as separate</em> <a name="59" href="#59">59</a> <em> * integers and that each MAY be incremented higher than a single digit.</em> <a name="60" href="#60">60</a> <em> * Thus, HTTP/2.4 is a lower version than HTTP/2.13, which in turn is</em> <a name="61" href="#61">61</a> <em> * lower than HTTP/12.3. Leading zeros MUST be ignored by recipients and</em> <a name="62" href="#62">62</a> <em> * MUST NOT be sent.</em> <a name="63" href="#63">63</a> <em> * </p></em> <a name="64" href="#64">64</a> <em> * </em> <a name="65" href="#65">65</a> <em> * @author <a href="<a href="mailto:oleg@ural.ru" target="alexandria_uri">mailto:oleg@ural.ru</a>">Oleg Kalnichevski</a></em> <a name="66" href="#66">66</a> <em> * </em> <a name="67" href="#67">67</a> <em> * @version $Revision: 480424 $ $Date: 2006-11-29 06:56:49 +0100 (Wed, 29 Nov 2006) $</em> <a name="68" href="#68">68</a> <em> *</em> <a name="69" href="#69">69</a> <em> * @since 3.0</em> <a name="70" href="#70">70</a> <em> */</em> <a name="71" href="#71">71</a> <strong>public</strong> <strong>class</strong> <a href="../../../../org/apache/commons/httpclient/HttpVersion.html">HttpVersion</a> implements Comparable { <a name="72" href="#72">72</a> <a name="73" href="#73">73</a> <em>/**</em><em> Major version number of the HTTP protocol */</em> <a name="74" href="#74">74</a> <strong>private</strong> <strong>int</strong> major = 0; <a name="75" href="#75">75</a> <a name="76" href="#76">76</a> <em>/**</em><em> Minor version number of the HTTP protocol */</em> <a name="77" href="#77">77</a> <strong>private</strong> <strong>int</strong> minor = 0; <a name="78" href="#78">78</a> <a name="79" href="#79">79</a> <em>/**</em><em> HTTP protocol version 0.9 */</em> <a name="80" href="#80">80</a> <strong>public</strong> <strong>static</strong> <strong>final</strong> <a href="../../../../org/apache/commons/httpclient/HttpVersion.html">HttpVersion</a> HTTP_0_9 = <strong>new</strong> <a href="../../../../org/apache/commons/httpclient/HttpVersion.html">HttpVersion</a>(0, 9); <a name="81" href="#81">81</a> <a name="82" href="#82">82</a> <em>/**</em><em> HTTP protocol version 1.0 */</em> <a name="83" href="#83">83</a> <strong>public</strong> <strong>static</strong> <strong>final</strong> <a href="../../../../org/apache/commons/httpclient/HttpVersion.html">HttpVersion</a> HTTP_1_0 = <strong>new</strong> <a href="../../../../org/apache/commons/httpclient/HttpVersion.html">HttpVersion</a>(1, 0); <a name="84" href="#84">84</a> <a name="85" href="#85">85</a> <em>/**</em><em> HTTP protocol version 1.1 */</em> <a name="86" href="#86">86</a> <strong>public</strong> <strong>static</strong> <strong>final</strong> <a href="../../../../org/apache/commons/httpclient/HttpVersion.html">HttpVersion</a> HTTP_1_1 = <strong>new</strong> <a href="../../../../org/apache/commons/httpclient/HttpVersion.html">HttpVersion</a>(1, 1); <a name="87" href="#87">87</a> <a name="88" href="#88">88</a> <em>/**</em> <a name="89" href="#89">89</a> <em> * Create an HTTP protocol version designator.</em> <a name="90" href="#90">90</a> <em> *</em> <a name="91" href="#91">91</a> <em> * @param major the major version number of the HTTP protocol</em> <a name="92" href="#92">92</a> <em> * @param minor the minor version number of the HTTP protocol</em> <a name="93" href="#93">93</a> <em> * </em> <a name="94" href="#94">94</a> <em> * @throws IllegalArgumentException if either major or minor version number is negative</em> <a name="95" href="#95">95</a> <em> */</em> <a name="96" href="#96">96</a> <strong>public</strong> <a href="../../../../org/apache/commons/httpclient/HttpVersion.html">HttpVersion</a>(<strong>int</strong> major, <strong>int</strong> minor) { <a name="97" href="#97">97</a> <strong>if</strong> (major < 0) { <a name="98" href="#98">98</a> <strong>throw</strong> <strong>new</strong> IllegalArgumentException(<span class="string">"HTTP major version number may not be negative"</span>); <a name="99" href="#99">99</a> } <a name="100" href="#100">100</a> <strong>this</strong>.major = major; <a name="101" href="#101">101</a> <strong>if</strong> (minor < 0) { <a name="102" href="#102">102</a> <strong>throw</strong> <strong>new</strong> IllegalArgumentException(<span class="string">"HTTP minor version number may not be negative"</span>); <a name="103" href="#103">103</a> } <a name="104" href="#104">104</a> <strong>this</strong>.minor = minor; <a name="105" href="#105">105</a> } <a name="106" href="#106">106</a> <a name="107" href="#107">107</a> <em>/**</em> <a name="108" href="#108">108</a> <em> * Returns the major version number of the HTTP protocol.</em> <a name="109" href="#109">109</a> <em> * </em> <a name="110" href="#110">110</a> <em> * @return the major version number.</em> <a name="111" href="#111">111</a> <em> */</em> <a name="112" href="#112">112</a> <strong>public</strong> <strong>int</strong> getMajor() { <a name="113" href="#113">113</a> <strong>return</strong> major; <a name="114" href="#114">114</a> } <a name="115" href="#115">115</a> <a name="116" href="#116">116</a> <em>/**</em> <a name="117" href="#117">117</a> <em> * Returns the minor version number of the HTTP protocol.</em> <a name="118" href="#118">118</a> <em> * </em> <a name="119" href="#119">119</a> <em> * @return the minor version number.</em> <a name="120" href="#120">120</a> <em> */</em> <a name="121" href="#121">121</a> <strong>public</strong> <strong>int</strong> getMinor() { <a name="122" href="#122">122</a> <strong>return</strong> minor; <a name="123" href="#123">123</a> } <a name="124" href="#124">124</a> <a name="125" href="#125">125</a> <em>/**</em> <a name="126" href="#126">126</a> <em> * @see java.lang.Object#hashCode()</em> <a name="127" href="#127">127</a> <em> */</em> <a name="128" href="#128">128</a> <strong>public</strong> <strong>int</strong> hashCode() { <a name="129" href="#129">129</a> <strong>return</strong> <strong>this</strong>.major * 100000 + <strong>this</strong>.minor; <a name="130" href="#130">130</a> } <a name="131" href="#131">131</a> <a name="132" href="#132">132</a> <em>/**</em> <a name="133" href="#133">133</a> <em> * @see java.lang.Object#equals(java.lang.Object)</em> <a name="134" href="#134">134</a> <em> */</em> <a name="135" href="#135">135</a> <strong>public</strong> <strong>boolean</strong> equals(Object obj) { <a name="136" href="#136">136</a> <strong>if</strong> (<strong>this</strong> == obj) { <a name="137" href="#137">137</a> <strong>return</strong> <strong>true</strong>; <a name="138" href="#138">138</a> } <a name="139" href="#139">139</a> <strong>if</strong> (!(obj instanceof HttpVersion)) { <a name="140" href="#140">140</a> <strong>return</strong> false; <a name="141" href="#141">141</a> } <a name="142" href="#142">142</a> <strong>return</strong> equals((HttpVersion)obj); <a name="143" href="#143">143</a> } <a name="144" href="#144">144</a> <a name="145" href="#145">145</a> <em>/**</em> <a name="146" href="#146">146</a> <em> * Compares this HTTP protocol version with another one.</em> <a name="147" href="#147">147</a> <em> * </em> <a name="148" href="#148">148</a> <em> * @param anotherVer the version to be compared with.</em> <a name="149" href="#149">149</a> <em> * </em> <a name="150" href="#150">150</a> <em> * @return a negative integer, zero, or a positive integer as this version is less than, </em> <a name="151" href="#151">151</a> <em> * equal to, or greater than the specified version. </em> <a name="152" href="#152">152</a> <em> */</em> <a name="153" href="#153">153</a> <strong>public</strong> <strong>int</strong> compareTo(<a href="../../../../org/apache/commons/httpclient/HttpVersion.html">HttpVersion</a> anotherVer) { <a name="154" href="#154">154</a> <strong>if</strong> (anotherVer == <strong>null</strong>) { <a name="155" href="#155">155</a> <strong>throw</strong> <strong>new</strong> IllegalArgumentException(<span class="string">"Version parameter may not be null"</span>); <a name="156" href="#156">156</a> } <a name="157" href="#157">157</a> <strong>int</strong> delta = getMajor() - anotherVer.getMajor(); <a name="158" href="#158">158</a> <strong>if</strong> (delta == 0) { <a name="159" href="#159">159</a> delta = getMinor() - anotherVer.getMinor(); <a name="160" href="#160">160</a> } <a name="161" href="#161">161</a> <strong>return</strong> delta; <a name="162" href="#162">162</a> } <a name="163" href="#163">163</a> <a name="164" href="#164">164</a> <em>/**</em> <a name="165" href="#165">165</a> <em> * @see java.lang.Comparable#compareTo(java.lang.Object)</em> <a name="166" href="#166">166</a> <em> */</em> <a name="167" href="#167">167</a> <strong>public</strong> <strong>int</strong> compareTo(Object o) { <a name="168" href="#168">168</a> <strong>return</strong> compareTo((HttpVersion)o); <a name="169" href="#169">169</a> } <a name="170" href="#170">170</a> <a name="171" href="#171">171</a> <em>/**</em> <a name="172" href="#172">172</a> <em> * Test if the HTTP protocol version is equal to the given number.</em> <a name="173" href="#173">173</a> <em> * </em> <a name="174" href="#174">174</a> <em> * @return <tt>true</tt> if HTTP protocol version is given to the given number, </em> <a name="175" href="#175">175</a> <em> * <tt>false</tt> otherwise.</em> <a name="176" href="#176">176</a> <em> */</em> <a name="177" href="#177">177</a> <strong>public</strong> <strong>boolean</strong> equals(<a href="../../../../org/apache/commons/httpclient/HttpVersion.html">HttpVersion</a> version) { <a name="178" href="#178">178</a> <strong>return</strong> compareTo(version) == 0; <a name="179" href="#179">179</a> } <a name="180" href="#180">180</a> <a name="181" href="#181">181</a> <em>/**</em> <a name="182" href="#182">182</a> <em> * Test if the HTTP protocol version is greater or equal to the given number.</em> <a name="183" href="#183">183</a> <em> * </em> <a name="184" href="#184">184</a> <em> * @return <tt>true</tt> if HTTP protocol version is greater or equal given to the </em> <a name="185" href="#185">185</a> <em> * given number, <tt>false</tt> otherwise.</em> <a name="186" href="#186">186</a> <em> */</em> <a name="187" href="#187">187</a> <strong>public</strong> <strong>boolean</strong> greaterEquals(<a href="../../../../org/apache/commons/httpclient/HttpVersion.html">HttpVersion</a> version) { <a name="188" href="#188">188</a> <strong>return</strong> compareTo(version) >= 0; <a name="189" href="#189">189</a> } <a name="190" href="#190">190</a> <a name="191" href="#191">191</a> <em>/**</em> <a name="192" href="#192">192</a> <em> * Test if the HTTP protocol version is less or equal to the given number.</em> <a name="193" href="#193">193</a> <em> * </em> <a name="194" href="#194">194</a> <em> * @return <tt>true</tt> if HTTP protocol version is less or equal to given to the </em> <a name="195" href="#195">195</a> <em> * given number, <tt>false</tt> otherwise.</em> <a name="196" href="#196">196</a> <em> */</em> <a name="197" href="#197">197</a> <strong>public</strong> <strong>boolean</strong> lessEquals(<a href="../../../../org/apache/commons/httpclient/HttpVersion.html">HttpVersion</a> version) { <a name="198" href="#198">198</a> <strong>return</strong> compareTo(version) <= 0; <a name="199" href="#199">199</a> } <a name="200" href="#200">200</a> <a name="201" href="#201">201</a> <em>/**</em> <a name="202" href="#202">202</a> <em> * @see java.lang.Object#toString()</em> <a name="203" href="#203">203</a> <em> */</em> <a name="204" href="#204">204</a> <strong>public</strong> String toString() { <a name="205" href="#205">205</a> StringBuffer buffer = <strong>new</strong> StringBuffer(); <a name="206" href="#206">206</a> buffer.append(<span class="string">"HTTP/"</span>); <a name="207" href="#207">207</a> buffer.append(<strong>this</strong>.major); <a name="208" href="#208">208</a> buffer.append('.'); <a name="209" href="#209">209</a> buffer.append(<strong>this</strong>.minor); <a name="210" href="#210">210</a> <strong>return</strong> buffer.toString(); <a name="211" href="#211">211</a> } <a name="212" href="#212">212</a> <a name="213" href="#213">213</a> <em>/**</em> <a name="214" href="#214">214</a> <em> * Parses the textual representation of the given HTTP protocol version.</em> <a name="215" href="#215">215</a> <em> * </em> <a name="216" href="#216">216</a> <em> * @return HTTP protocol version.</em> <a name="217" href="#217">217</a> <em> * </em> <a name="218" href="#218">218</a> <em> * @throws ProtocolException if the string is not a valid HTTP protocol version. </em> <a name="219" href="#219">219</a> <em> */</em> <a name="220" href="#220">220</a> <strong>public</strong> <strong>static</strong> <a href="../../../../org/apache/commons/httpclient/HttpVersion.html">HttpVersion</a> parse(<strong>final</strong> String s) throws ProtocolException { <a name="221" href="#221">221</a> <strong>if</strong> (s == <strong>null</strong>) { <a name="222" href="#222">222</a> <strong>throw</strong> <strong>new</strong> IllegalArgumentException(<span class="string">"String may not be null"</span>); <a name="223" href="#223">223</a> } <a name="224" href="#224">224</a> <strong>if</strong> (!s.startsWith(<span class="string">"HTTP/"</span>)) { <a name="225" href="#225">225</a> <strong>throw</strong> <strong>new</strong> <a href="../../../../org/apache/commons/httpclient/ProtocolException.html">ProtocolException</a>(<span class="string">"Invalid HTTP version string: "</span> + s); <a name="226" href="#226">226</a> } <a name="227" href="#227">227</a> <strong>int</strong> major, minor; <a name="228" href="#228">228</a> <a name="229" href="#229">229</a> <strong>int</strong> i1 = <span class="string">"HTTP/"</span>.length(); <a name="230" href="#230">230</a> <strong>int</strong> i2 = s.indexOf(<span class="string">"."</span>, i1); <a name="231" href="#231">231</a> <strong>if</strong> (i2 == -1) { <a name="232" href="#232">232</a> <strong>throw</strong> <strong>new</strong> <a href="../../../../org/apache/commons/httpclient/ProtocolException.html">ProtocolException</a>(<span class="string">"Invalid HTTP version number: "</span> + s); <a name="233" href="#233">233</a> } <a name="234" href="#234">234</a> <strong>try</strong> { <a name="235" href="#235">235</a> major = Integer.parseInt(s.substring(i1, i2)); <a name="236" href="#236">236</a> } <strong>catch</strong> (NumberFormatException e) { <a name="237" href="#237">237</a> <strong>throw</strong> <strong>new</strong> <a href="../../../../org/apache/commons/httpclient/ProtocolException.html">ProtocolException</a>(<span class="string">"Invalid HTTP major version number: "</span> + s); <a name="238" href="#238">238</a> } <a name="239" href="#239">239</a> i1 = i2 + 1; <a name="240" href="#240">240</a> i2 = s.length(); <a name="241" href="#241">241</a> <strong>try</strong> { <a name="242" href="#242">242</a> minor = Integer.parseInt(s.substring(i1, i2)); <a name="243" href="#243">243</a> } <strong>catch</strong> (NumberFormatException e) { <a name="244" href="#244">244</a> <strong>throw</strong> <strong>new</strong> <a href="../../../../org/apache/commons/httpclient/ProtocolException.html">ProtocolException</a>(<span class="string">"Invalid HTTP minor version number: "</span> + s); <a name="245" href="#245">245</a> } <a name="246" href="#246">246</a> <strong>return</strong> <strong>new</strong> <a href="../../../../org/apache/commons/httpclient/HttpVersion.html">HttpVersion</a>(major, minor); <a name="247" href="#247">247</a> } <a name="248" href="#248">248</a> <a name="249" href="#249">249</a> } </pre> <hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/">Maven</a></div></body> </html>