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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * contributor license agreements. See the NOTICE file distributed with<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * this work for additional information regarding copyright ownership.<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * The ASF licenses this file to You under the Apache license, Version 2.0<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * the License. You may obtain a copy of the License at<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> *<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> *<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * See the license for the specific language governing permissions and<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * limitations under the license.<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> */<a name="line.16"></a> |
| <span class="sourceLineNo">017</span>package org.apache.logging.log4j.core.lookup;<a name="line.17"></a> |
| <span class="sourceLineNo">018</span><a name="line.18"></a> |
| <span class="sourceLineNo">019</span>import java.util.Arrays;<a name="line.19"></a> |
| <span class="sourceLineNo">020</span><a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import org.apache.logging.log4j.util.Chars;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import org.apache.logging.log4j.util.Strings;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span><a name="line.23"></a> |
| <span class="sourceLineNo">024</span>/**<a name="line.24"></a> |
| <span class="sourceLineNo">025</span> * A matcher class that can be queried to determine if a character array<a name="line.25"></a> |
| <span class="sourceLineNo">026</span> * portion matches.<a name="line.26"></a> |
| <span class="sourceLineNo">027</span> * <p><a name="line.27"></a> |
| <span class="sourceLineNo">028</span> * This class comes complete with various factory methods.<a name="line.28"></a> |
| <span class="sourceLineNo">029</span> * If these do not suffice, you can subclass and implement your own matcher.<a name="line.29"></a> |
| <span class="sourceLineNo">030</span> */<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>public abstract class StrMatcher {<a name="line.31"></a> |
| <span class="sourceLineNo">032</span><a name="line.32"></a> |
| <span class="sourceLineNo">033</span> /**<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> * Matches the comma character.<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> */<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> private static final StrMatcher COMMA_MATCHER = new CharMatcher(',');<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> /**<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * Matches the tab character.<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> */<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> private static final StrMatcher TAB_MATCHER = new CharMatcher(Chars.TAB);<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> /**<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * Matches the space character.<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> */<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> private static final StrMatcher SPACE_MATCHER = new CharMatcher(Chars.SPACE);<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> /**<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> * Matches the same characters as StringTokenizer,<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> * namely space, tab, newline, formfeed.<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> */<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> private static final StrMatcher SPLIT_MATCHER = new CharSetMatcher(" \t\n\r\f".toCharArray());<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> /**<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * Matches the String trim() whitespace characters.<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> */<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> private static final StrMatcher TRIM_MATCHER = new TrimMatcher();<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> /**<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * Matches the double quote character.<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> */<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> private static final StrMatcher SINGLE_QUOTE_MATCHER = new CharMatcher(Chars.QUOTE);<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> /**<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * Matches the double quote character.<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> */<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> private static final StrMatcher DOUBLE_QUOTE_MATCHER = new CharMatcher(Chars.DQUOTE);<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> /**<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> * Matches the single or double quote character.<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> */<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> private static final StrMatcher QUOTE_MATCHER = new CharSetMatcher("'\"".toCharArray());<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> /**<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> * Matches no characters.<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> */<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> private static final StrMatcher NONE_MATCHER = new NoMatcher();<a name="line.69"></a> |
| <span class="sourceLineNo">070</span><a name="line.70"></a> |
| <span class="sourceLineNo">071</span> /**<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> * Constructor.<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> */<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> protected StrMatcher() {<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> }<a name="line.75"></a> |
| <span class="sourceLineNo">076</span><a name="line.76"></a> |
| <span class="sourceLineNo">077</span> /**<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> * Returns a matcher which matches the comma character.<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> *<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> * @return a matcher for a comma<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> */<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> public static StrMatcher commaMatcher() {<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> return COMMA_MATCHER;<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> }<a name="line.84"></a> |
| <span class="sourceLineNo">085</span><a name="line.85"></a> |
| <span class="sourceLineNo">086</span> /**<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> * Returns a matcher which matches the tab character.<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> *<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> * @return a matcher for a tab<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> */<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> public static StrMatcher tabMatcher() {<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> return TAB_MATCHER;<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> /**<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> * Returns a matcher which matches the space character.<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> *<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> * @return a matcher for a space<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> */<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> public static StrMatcher spaceMatcher() {<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> return SPACE_MATCHER;<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> }<a name="line.102"></a> |
| <span class="sourceLineNo">103</span><a name="line.103"></a> |
| <span class="sourceLineNo">104</span> /**<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> * Matches the same characters as StringTokenizer,<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> * namely space, tab, newline and formfeed.<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> *<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> * @return the split matcher<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> */<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> public static StrMatcher splitMatcher() {<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> return SPLIT_MATCHER;<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> }<a name="line.112"></a> |
| <span class="sourceLineNo">113</span><a name="line.113"></a> |
| <span class="sourceLineNo">114</span> /**<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> * Matches the String trim() whitespace characters.<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> *<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> * @return the trim matcher<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> */<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> public static StrMatcher trimMatcher() {<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> return TRIM_MATCHER;<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> }<a name="line.121"></a> |
| <span class="sourceLineNo">122</span><a name="line.122"></a> |
| <span class="sourceLineNo">123</span> /**<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> * Returns a matcher which matches the single quote character.<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> *<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> * @return a matcher for a single quote<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> */<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> public static StrMatcher singleQuoteMatcher() {<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> return SINGLE_QUOTE_MATCHER;<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> /**<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> * Returns a matcher which matches the double quote character.<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> *<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> * @return a matcher for a double quote<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> */<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> public static StrMatcher doubleQuoteMatcher() {<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> return DOUBLE_QUOTE_MATCHER;<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> }<a name="line.139"></a> |
| <span class="sourceLineNo">140</span><a name="line.140"></a> |
| <span class="sourceLineNo">141</span> /**<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> * Returns a matcher which matches the single or double quote character.<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> *<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> * @return a matcher for a single or double quote<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> */<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> public static StrMatcher quoteMatcher() {<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> return QUOTE_MATCHER;<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> }<a name="line.148"></a> |
| <span class="sourceLineNo">149</span><a name="line.149"></a> |
| <span class="sourceLineNo">150</span> /**<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> * Matches no characters.<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> *<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> * @return a matcher that matches nothing<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> */<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> public static StrMatcher noneMatcher() {<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> return NONE_MATCHER;<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> }<a name="line.157"></a> |
| <span class="sourceLineNo">158</span><a name="line.158"></a> |
| <span class="sourceLineNo">159</span> /**<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> * Constructor that creates a matcher from a character.<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> *<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> * @param ch the character to match, must not be null<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> * @return a new Matcher for the given char<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> */<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> public static StrMatcher charMatcher(final char ch) {<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> return new CharMatcher(ch);<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> }<a name="line.167"></a> |
| <span class="sourceLineNo">168</span><a name="line.168"></a> |
| <span class="sourceLineNo">169</span> /**<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> * Constructor that creates a matcher from a set of characters.<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> *<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> * @param chars the characters to match, null or empty matches nothing<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> * @return a new matcher for the given char[]<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> */<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> public static StrMatcher charSetMatcher(final char[] chars) {<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> if (chars == null || chars.length == 0) {<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> return NONE_MATCHER;<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> }<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> if (chars.length == 1) {<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> return new CharMatcher(chars[0]);<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> }<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> return new CharSetMatcher(chars);<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> }<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> * Constructor that creates a matcher from a string representing a set of characters.<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> *<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> * @param chars the characters to match, null or empty matches nothing<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> * @return a new Matcher for the given characters<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> */<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> public static StrMatcher charSetMatcher(final String chars) {<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> if (Strings.isEmpty(chars)) {<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> return NONE_MATCHER;<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> }<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> if (chars.length() == 1) {<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> return new CharMatcher(chars.charAt(0));<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> }<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> return new CharSetMatcher(chars.toCharArray());<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> }<a name="line.199"></a> |
| <span class="sourceLineNo">200</span><a name="line.200"></a> |
| <span class="sourceLineNo">201</span> /**<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> * Constructor that creates a matcher from a string.<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> *<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> * @param str the string to match, null or empty matches nothing<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> * @return a new Matcher for the given String<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> */<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> public static StrMatcher stringMatcher(final String str) {<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> if (Strings.isEmpty(str)) {<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> return NONE_MATCHER;<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> }<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> return new StringMatcher(str);<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> }<a name="line.212"></a> |
| <span class="sourceLineNo">213</span><a name="line.213"></a> |
| <span class="sourceLineNo">214</span> /**<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> * Returns the number of matching characters, zero for no match.<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> * <p><a name="line.216"></a> |
| <span class="sourceLineNo">217</span> * This method is called to check for a match.<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> * The parameter <code>pos</code> represents the current position to be<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> * checked in the string <code>buffer</code> (a character array which must<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> * not be changed).<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> * The API guarantees that <code>pos</code> is a valid index for <code>buffer</code>.<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> * <p><a name="line.222"></a> |
| <span class="sourceLineNo">223</span> * The character array may be larger than the active area to be matched.<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> * Only values in the buffer between the specified indices may be accessed.<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> * <p><a name="line.225"></a> |
| <span class="sourceLineNo">226</span> * The matching code may check one character or many.<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> * It may check characters preceding <code>pos</code> as well as those<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> * after, so long as no checks exceed the bounds specified.<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> * <p><a name="line.229"></a> |
| <span class="sourceLineNo">230</span> * It must return zero for no match, or a positive number if a match was found.<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> * The number indicates the number of characters that matched.<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> *<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> * @param buffer the text content to match against, do not change<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> * @param pos the starting position for the match, valid for buffer<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> * @param bufferStart the first active index in the buffer, valid for buffer<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> * @param bufferEnd the end index (exclusive) of the active buffer, valid for buffer<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> * @return the number of matching characters, zero for no match<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> */<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> public abstract int isMatch(char[] buffer, int pos, int bufferStart, int bufferEnd);<a name="line.239"></a> |
| <span class="sourceLineNo">240</span><a name="line.240"></a> |
| <span class="sourceLineNo">241</span> /**<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> * Returns the number of matching characters, zero for no match.<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> * <p><a name="line.243"></a> |
| <span class="sourceLineNo">244</span> * This method is called to check for a match.<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> * The parameter <code>pos</code> represents the current position to be<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> * checked in the string <code>buffer</code> (a character array which must<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> * not be changed).<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> * The API guarantees that <code>pos</code> is a valid index for <code>buffer</code>.<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> * <p><a name="line.249"></a> |
| <span class="sourceLineNo">250</span> * The matching code may check one character or many.<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> * It may check characters preceding <code>pos</code> as well as those after.<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> * <p><a name="line.252"></a> |
| <span class="sourceLineNo">253</span> * It must return zero for no match, or a positive number if a match was found.<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> * The number indicates the number of characters that matched.<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> *<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> * @param buffer the text content to match against, do not change<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> * @param pos the starting position for the match, valid for buffer<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> * @return the number of matching characters, zero for no match<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> * @since 2.4<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> */<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> public int isMatch(final char[] buffer, final int pos) {<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> return isMatch(buffer, pos, 0, buffer.length);<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> }<a name="line.263"></a> |
| <span class="sourceLineNo">264</span><a name="line.264"></a> |
| <span class="sourceLineNo">265</span> //-----------------------------------------------------------------------<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> /**<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> * Class used to define a set of characters for matching purposes.<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> */<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> static final class CharSetMatcher extends StrMatcher {<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> /** The set of characters to match. */<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> private final char[] chars;<a name="line.271"></a> |
| <span class="sourceLineNo">272</span><a name="line.272"></a> |
| <span class="sourceLineNo">273</span> /**<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> * Constructor that creates a matcher from a character array.<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> *<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> * @param chars the characters to match, must not be null<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> */<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> CharSetMatcher(final char[] chars) {<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> super();<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> this.chars = chars.clone();<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> Arrays.sort(this.chars);<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> }<a name="line.282"></a> |
| <span class="sourceLineNo">283</span><a name="line.283"></a> |
| <span class="sourceLineNo">284</span> /**<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> * Returns whether or not the given character matches.<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> *<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> * @param buffer the text content to match against, do not change<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> * @param pos the starting position for the match, valid for buffer<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> * @param bufferStart the first active index in the buffer, valid for buffer<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> * @param bufferEnd the end index of the active buffer, valid for buffer<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> * @return the number of matching characters, zero for no match<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> */<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> @Override<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> public int isMatch(final char[] buffer, final int pos, final int bufferStart, final int bufferEnd) {<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> return Arrays.binarySearch(chars, buffer[pos]) >= 0 ? 1 : 0;<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> }<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> }<a name="line.297"></a> |
| <span class="sourceLineNo">298</span><a name="line.298"></a> |
| <span class="sourceLineNo">299</span> //-----------------------------------------------------------------------<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> /**<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> * Class used to define a character for matching purposes.<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> */<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> static final class CharMatcher extends StrMatcher {<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> /** The character to match. */<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> private final char ch;<a name="line.305"></a> |
| <span class="sourceLineNo">306</span><a name="line.306"></a> |
| <span class="sourceLineNo">307</span> /**<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> * Constructor that creates a matcher that matches a single character.<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> *<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> * @param ch the character to match<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> */<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> CharMatcher(final char ch) {<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> super();<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> this.ch = ch;<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> }<a name="line.315"></a> |
| <span class="sourceLineNo">316</span><a name="line.316"></a> |
| <span class="sourceLineNo">317</span> /**<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> * Returns whether or not the given character matches.<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> *<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> * @param buffer the text content to match against, do not change<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> * @param pos the starting position for the match, valid for buffer<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> * @param bufferStart the first active index in the buffer, valid for buffer<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> * @param bufferEnd the end index of the active buffer, valid for buffer<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> * @return the number of matching characters, zero for no match<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> */<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> @Override<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> public int isMatch(final char[] buffer, final int pos, final int bufferStart, final int bufferEnd) {<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> return ch == buffer[pos] ? 1 : 0;<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> }<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> }<a name="line.330"></a> |
| <span class="sourceLineNo">331</span><a name="line.331"></a> |
| <span class="sourceLineNo">332</span> //-----------------------------------------------------------------------<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> /**<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> * Class used to define a set of characters for matching purposes.<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> */<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> static final class StringMatcher extends StrMatcher {<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> /** The string to match, as a character array. */<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> private final char[] chars;<a name="line.338"></a> |
| <span class="sourceLineNo">339</span><a name="line.339"></a> |
| <span class="sourceLineNo">340</span> /**<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> * Constructor that creates a matcher from a String.<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> *<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> * @param str the string to match, must not be null<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> */<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> StringMatcher(final String str) {<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> super();<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> chars = str.toCharArray();<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> }<a name="line.348"></a> |
| <span class="sourceLineNo">349</span><a name="line.349"></a> |
| <span class="sourceLineNo">350</span> /**<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> * Returns whether or not the given text matches the stored string.<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> *<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> * @param buffer the text content to match against, do not change<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> * @param pos the starting position for the match, valid for buffer<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> * @param bufferStart the first active index in the buffer, valid for buffer<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> * @param bufferEnd the end index of the active buffer, valid for buffer<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> * @return the number of matching characters, zero for no match<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> */<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> @Override<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> public int isMatch(final char[] buffer, int pos, final int bufferStart, final int bufferEnd) {<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> final int len = chars.length;<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> if (pos + len > bufferEnd) {<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> return 0;<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> }<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> for (int i = 0; i < chars.length; i++, pos++) {<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> if (chars[i] != buffer[pos]) {<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> return 0;<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> }<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> }<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> return len;<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> }<a name="line.371"></a> |
| <span class="sourceLineNo">372</span><a name="line.372"></a> |
| <span class="sourceLineNo">373</span> @Override<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> public String toString() {<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> return super.toString() + Chars.SPACE + Arrays.toString(chars);<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> }<a name="line.376"></a> |
| <span class="sourceLineNo">377</span><a name="line.377"></a> |
| <span class="sourceLineNo">378</span> }<a name="line.378"></a> |
| <span class="sourceLineNo">379</span><a name="line.379"></a> |
| <span class="sourceLineNo">380</span> //-----------------------------------------------------------------------<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> /**<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> * Class used to match no characters.<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> */<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> static final class NoMatcher extends StrMatcher {<a name="line.384"></a> |
| <span class="sourceLineNo">385</span><a name="line.385"></a> |
| <span class="sourceLineNo">386</span> /**<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> * Constructs a new instance of <code>NoMatcher</code>.<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> */<a name="line.388"></a> |
| <span class="sourceLineNo">389</span> NoMatcher() {<a name="line.389"></a> |
| <span class="sourceLineNo">390</span> super();<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> }<a name="line.391"></a> |
| <span class="sourceLineNo">392</span><a name="line.392"></a> |
| <span class="sourceLineNo">393</span> /**<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> * Always returns {@code false}.<a name="line.394"></a> |
| <span class="sourceLineNo">395</span> *<a name="line.395"></a> |
| <span class="sourceLineNo">396</span> * @param buffer the text content to match against, do not change<a name="line.396"></a> |
| <span class="sourceLineNo">397</span> * @param pos the starting position for the match, valid for buffer<a name="line.397"></a> |
| <span class="sourceLineNo">398</span> * @param bufferStart the first active index in the buffer, valid for buffer<a name="line.398"></a> |
| <span class="sourceLineNo">399</span> * @param bufferEnd the end index of the active buffer, valid for buffer<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> * @return the number of matching characters, zero for no match<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> */<a name="line.401"></a> |
| <span class="sourceLineNo">402</span> @Override<a name="line.402"></a> |
| <span class="sourceLineNo">403</span> public int isMatch(final char[] buffer, final int pos, final int bufferStart, final int bufferEnd) {<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> return 0;<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> }<a name="line.405"></a> |
| <span class="sourceLineNo">406</span> }<a name="line.406"></a> |
| <span class="sourceLineNo">407</span><a name="line.407"></a> |
| <span class="sourceLineNo">408</span> //-----------------------------------------------------------------------<a name="line.408"></a> |
| <span class="sourceLineNo">409</span> /**<a name="line.409"></a> |
| <span class="sourceLineNo">410</span> * Class used to match whitespace as per trim().<a name="line.410"></a> |
| <span class="sourceLineNo">411</span> */<a name="line.411"></a> |
| <span class="sourceLineNo">412</span> static final class TrimMatcher extends StrMatcher {<a name="line.412"></a> |
| <span class="sourceLineNo">413</span><a name="line.413"></a> |
| <span class="sourceLineNo">414</span> /**<a name="line.414"></a> |
| <span class="sourceLineNo">415</span> * Constructs a new instance of <code>TrimMatcher</code>.<a name="line.415"></a> |
| <span class="sourceLineNo">416</span> */<a name="line.416"></a> |
| <span class="sourceLineNo">417</span> TrimMatcher() {<a name="line.417"></a> |
| <span class="sourceLineNo">418</span> super();<a name="line.418"></a> |
| <span class="sourceLineNo">419</span> }<a name="line.419"></a> |
| <span class="sourceLineNo">420</span><a name="line.420"></a> |
| <span class="sourceLineNo">421</span> /**<a name="line.421"></a> |
| <span class="sourceLineNo">422</span> * Returns whether or not the given character matches.<a name="line.422"></a> |
| <span class="sourceLineNo">423</span> *<a name="line.423"></a> |
| <span class="sourceLineNo">424</span> * @param buffer the text content to match against, do not change<a name="line.424"></a> |
| <span class="sourceLineNo">425</span> * @param pos the starting position for the match, valid for buffer<a name="line.425"></a> |
| <span class="sourceLineNo">426</span> * @param bufferStart the first active index in the buffer, valid for buffer<a name="line.426"></a> |
| <span class="sourceLineNo">427</span> * @param bufferEnd the end index of the active buffer, valid for buffer<a name="line.427"></a> |
| <span class="sourceLineNo">428</span> * @return the number of matching characters, zero for no match<a name="line.428"></a> |
| <span class="sourceLineNo">429</span> */<a name="line.429"></a> |
| <span class="sourceLineNo">430</span> @Override<a name="line.430"></a> |
| <span class="sourceLineNo">431</span> public int isMatch(final char[] buffer, final int pos, final int bufferStart, final int bufferEnd) {<a name="line.431"></a> |
| <span class="sourceLineNo">432</span> return buffer[pos] <= ' ' ? 1 : 0;<a name="line.432"></a> |
| <span class="sourceLineNo">433</span> }<a name="line.433"></a> |
| <span class="sourceLineNo">434</span> }<a name="line.434"></a> |
| <span class="sourceLineNo">435</span><a name="line.435"></a> |
| <span class="sourceLineNo">436</span>}<a name="line.436"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
