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| <pre><span class="sourceLineNo">001</span>package org.apache.archiva.common.utils;<a name="line.1"></a> |
| <span class="sourceLineNo">002</span><a name="line.2"></a> |
| <span class="sourceLineNo">003</span>/*<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * or more contributor license agreements. See the NOTICE file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * distributed with this work for additional information<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * regarding copyright ownership. The ASF licenses this file<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * to you under the Apache License, Version 2.0 (the<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> * "License"); you may not use this file except in compliance<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * with the License. You may obtain a copy of the License at<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> *<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * Unless required by applicable law or agreed to in writing,<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * software distributed under the License is distributed on an<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * KIND, either express or implied. See the License for the<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> * specific language governing permissions and limitations<a name="line.18"></a> |
| <span class="sourceLineNo">019</span> * under the License.<a name="line.19"></a> |
| <span class="sourceLineNo">020</span> */<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import org.apache.commons.lang.ArrayUtils;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.commons.lang.StringUtils;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.commons.lang.math.NumberUtils;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span><a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.ArrayList;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.Comparator;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.List;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span><a name="line.29"></a> |
| <span class="sourceLineNo">030</span>/**<a name="line.30"></a> |
| <span class="sourceLineNo">031</span> * VersionComparator - compare the parts of two version strings.<a name="line.31"></a> |
| <span class="sourceLineNo">032</span> * <p><a name="line.32"></a> |
| <span class="sourceLineNo">033</span> * Technique.<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> * </p><a name="line.34"></a> |
| <span class="sourceLineNo">035</span> * <p><a name="line.35"></a> |
| <span class="sourceLineNo">036</span> * * Split the version strings into parts by splitting on <code>"-._"</code> first, then breaking apart words from numbers.<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> * </p><a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * <code><a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * "1.0" = "1", "0"<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * "1.0-alpha-1" = "1", "0", "alpha", "1"<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * "2.0-rc2" = "2", "0", "rc", "2"<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * "1.3-m2" = "1", "3", "m", "3"<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * </code><a name="line.43"></a> |
| <span class="sourceLineNo">044</span> * <p><a name="line.44"></a> |
| <span class="sourceLineNo">045</span> * compare each part individually, and when they do not match, perform the following test.<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> * </p><a name="line.46"></a> |
| <span class="sourceLineNo">047</span> * <p><a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * Numbers are calculated per normal comparison rules.<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * Words that are part of the "special word list" will be treated as their index within that heirarchy.<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * Words that cannot be identified as special, are treated using normal case-insensitive comparison rules.<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * </p><a name="line.51"></a> |
| <span class="sourceLineNo">052</span> *<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> */<a name="line.53"></a> |
| <span class="sourceLineNo">054</span>public class VersionComparator<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> implements Comparator<String><a name="line.55"></a> |
| <span class="sourceLineNo">056</span>{<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> private static final Comparator<String> INSTANCE = new VersionComparator();<a name="line.57"></a> |
| <span class="sourceLineNo">058</span><a name="line.58"></a> |
| <span class="sourceLineNo">059</span> private final List<String> specialWords;<a name="line.59"></a> |
| <span class="sourceLineNo">060</span><a name="line.60"></a> |
| <span class="sourceLineNo">061</span> public VersionComparator()<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> {<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> specialWords = new ArrayList<>( 23 );<a name="line.63"></a> |
| <span class="sourceLineNo">064</span><a name="line.64"></a> |
| <span class="sourceLineNo">065</span> // ids that refer to LATEST<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> specialWords.add( "final" );<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> specialWords.add( "release" );<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> specialWords.add( "current" );<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> specialWords.add( "latest" );<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> specialWords.add( "g" );<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> specialWords.add( "gold" );<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> specialWords.add( "fcs" );<a name="line.72"></a> |
| <span class="sourceLineNo">073</span><a name="line.73"></a> |
| <span class="sourceLineNo">074</span> // ids that are for a release cycle.<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> specialWords.add( "a" );<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> specialWords.add( "alpha" );<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> specialWords.add( "b" );<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> specialWords.add( "beta" );<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> specialWords.add( "pre" );<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> specialWords.add( "rc" );<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> specialWords.add( "m" );<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> specialWords.add( "milestone" );<a name="line.82"></a> |
| <span class="sourceLineNo">083</span><a name="line.83"></a> |
| <span class="sourceLineNo">084</span> // ids that are for dev / debug cycles.<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> specialWords.add( "dev" );<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> specialWords.add( "test" );<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> specialWords.add( "debug" );<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> specialWords.add( "unofficial" );<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> specialWords.add( "nightly" );<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> specialWords.add( "incubating" );<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> specialWords.add( "incubator" );<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> specialWords.add( "snapshot" );<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> }<a name="line.93"></a> |
| <span class="sourceLineNo">094</span><a name="line.94"></a> |
| <span class="sourceLineNo">095</span> public static Comparator<String> getInstance()<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> {<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> return INSTANCE;<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> }<a name="line.98"></a> |
| <span class="sourceLineNo">099</span><a name="line.99"></a> |
| <span class="sourceLineNo">100</span> @Override<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> public int compare( String o1, String o2 )<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> {<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> if ( o1 == null && o2 == null )<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> {<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> return 0;<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> }<a name="line.106"></a> |
| <span class="sourceLineNo">107</span><a name="line.107"></a> |
| <span class="sourceLineNo">108</span> if ( o1 == null )<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> {<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> return 1;<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> }<a name="line.111"></a> |
| <span class="sourceLineNo">112</span><a name="line.112"></a> |
| <span class="sourceLineNo">113</span> if ( o2 == null )<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> {<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> return -1;<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> }<a name="line.116"></a> |
| <span class="sourceLineNo">117</span><a name="line.117"></a> |
| <span class="sourceLineNo">118</span> String[] parts1 = toParts( o1 );<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> String[] parts2 = toParts( o2 );<a name="line.119"></a> |
| <span class="sourceLineNo">120</span><a name="line.120"></a> |
| <span class="sourceLineNo">121</span> int diff;<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> int partLen = Math.max( parts1.length, parts2.length );<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> for ( int i = 0; i < partLen; i++ )<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> {<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> diff = comparePart( safePart( parts1, i ), safePart( parts2, i ) );<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> if ( diff != 0 )<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> {<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> return diff;<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> }<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> }<a name="line.130"></a> |
| <span class="sourceLineNo">131</span><a name="line.131"></a> |
| <span class="sourceLineNo">132</span> diff = parts2.length - parts1.length;<a name="line.132"></a> |
| <span class="sourceLineNo">133</span><a name="line.133"></a> |
| <span class="sourceLineNo">134</span> if ( diff != 0 )<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> {<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> return diff;<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> }<a name="line.137"></a> |
| <span class="sourceLineNo">138</span><a name="line.138"></a> |
| <span class="sourceLineNo">139</span> return o1.compareToIgnoreCase( o2 );<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> }<a name="line.140"></a> |
| <span class="sourceLineNo">141</span><a name="line.141"></a> |
| <span class="sourceLineNo">142</span> private String safePart( String[] parts, int idx )<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> {<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> if ( idx < parts.length )<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> {<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> return parts[idx];<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> }<a name="line.147"></a> |
| <span class="sourceLineNo">148</span><a name="line.148"></a> |
| <span class="sourceLineNo">149</span> return "0";<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> }<a name="line.150"></a> |
| <span class="sourceLineNo">151</span><a name="line.151"></a> |
| <span class="sourceLineNo">152</span> private int comparePart( String s1, String s2 )<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> {<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> boolean is1Num = NumberUtils.isNumber( s1 );<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> boolean is2Num = NumberUtils.isNumber( s2 );<a name="line.155"></a> |
| <span class="sourceLineNo">156</span><a name="line.156"></a> |
| <span class="sourceLineNo">157</span> // (Special Case) Test for numbers both first.<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> if ( is1Num && is2Num )<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> {<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> int i1 = NumberUtils.toInt( s1 );<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> int i2 = NumberUtils.toInt( s2 );<a name="line.161"></a> |
| <span class="sourceLineNo">162</span><a name="line.162"></a> |
| <span class="sourceLineNo">163</span> return i1 - i2;<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> }<a name="line.164"></a> |
| <span class="sourceLineNo">165</span><a name="line.165"></a> |
| <span class="sourceLineNo">166</span> // Test for text both next.<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> if ( !is1Num && !is2Num )<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> {<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> int idx1 = specialWords.indexOf( s1.toLowerCase() );<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> int idx2 = specialWords.indexOf( s2.toLowerCase() );<a name="line.170"></a> |
| <span class="sourceLineNo">171</span><a name="line.171"></a> |
| <span class="sourceLineNo">172</span> // Only operate perform index based operation, if both strings<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> // are found in the specialWords index.<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> if ( idx1 >= 0 && idx2 >= 0 )<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> {<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> return idx1 - idx2;<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> }<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> }<a name="line.178"></a> |
| <span class="sourceLineNo">179</span><a name="line.179"></a> |
| <span class="sourceLineNo">180</span> // Comparing text to num<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> if ( !is1Num && is2Num )<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> {<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> return -1;<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> }<a name="line.184"></a> |
| <span class="sourceLineNo">185</span><a name="line.185"></a> |
| <span class="sourceLineNo">186</span> // Comparing num to text<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> if ( is1Num && !is2Num )<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> {<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> return 1;<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> }<a name="line.190"></a> |
| <span class="sourceLineNo">191</span><a name="line.191"></a> |
| <span class="sourceLineNo">192</span> // Return comparison of strings themselves.<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> return s1.compareToIgnoreCase( s2 );<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> }<a name="line.194"></a> |
| <span class="sourceLineNo">195</span><a name="line.195"></a> |
| <span class="sourceLineNo">196</span> public static String[] toParts( String version )<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> {<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> if ( StringUtils.isBlank( version ) )<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> {<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> return ArrayUtils.EMPTY_STRING_ARRAY;<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> }<a name="line.201"></a> |
| <span class="sourceLineNo">202</span><a name="line.202"></a> |
| <span class="sourceLineNo">203</span> int modeOther = 0;<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> int modeDigit = 1;<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> int modeText = 2;<a name="line.205"></a> |
| <span class="sourceLineNo">206</span><a name="line.206"></a> |
| <span class="sourceLineNo">207</span> List<String> parts = new ArrayList<>();<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> int len = version.length();<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> int i = 0;<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> int start = 0;<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> int mode = modeOther;<a name="line.211"></a> |
| <span class="sourceLineNo">212</span><a name="line.212"></a> |
| <span class="sourceLineNo">213</span> while ( i < len )<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> {<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> char c = version.charAt( i );<a name="line.215"></a> |
| <span class="sourceLineNo">216</span><a name="line.216"></a> |
| <span class="sourceLineNo">217</span> if ( Character.isDigit( c ) )<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> {<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> if ( mode != modeDigit )<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> {<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> if ( mode != modeOther )<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> {<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> parts.add( version.substring( start, i ) );<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> }<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> mode = modeDigit;<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> start = i;<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> }<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> }<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> else if ( Character.isLetter( c ) )<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> {<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> if ( mode != modeText )<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> {<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> if ( mode != modeOther )<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> {<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> parts.add( version.substring( start, i ) );<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> }<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> mode = modeText;<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> start = i;<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> }<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> }<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> else<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> {<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> // Other.<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> if ( mode != modeOther )<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> {<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> parts.add( version.substring( start, i ) );<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> mode = modeOther;<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> }<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> }<a name="line.249"></a> |
| <span class="sourceLineNo">250</span><a name="line.250"></a> |
| <span class="sourceLineNo">251</span> i++;<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> }<a name="line.252"></a> |
| <span class="sourceLineNo">253</span><a name="line.253"></a> |
| <span class="sourceLineNo">254</span> // Add remainder<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> if ( mode != modeOther )<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> {<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> parts.add( version.substring( start, i ) );<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> }<a name="line.258"></a> |
| <span class="sourceLineNo">259</span><a name="line.259"></a> |
| <span class="sourceLineNo">260</span> return parts.toArray( new String[parts.size()] );<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> }<a name="line.261"></a> |
| <span class="sourceLineNo">262</span>}<a name="line.262"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |