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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.util;<a name="line.17"></a> |
| <span class="sourceLineNo">018</span><a name="line.18"></a> |
| <span class="sourceLineNo">019</span>import java.io.InterruptedIOException;<a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.util.Locale;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.util.Properties;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span><a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.logging.log4j.Level;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.logging.log4j.Logger;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.logging.log4j.status.StatusLogger;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.logging.log4j.util.PropertiesUtil;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.logging.log4j.util.Strings;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span><a name="line.28"></a> |
| <span class="sourceLineNo">029</span>/**<a name="line.29"></a> |
| <span class="sourceLineNo">030</span> * A convenience class to convert property values to specific types.<a name="line.30"></a> |
| <span class="sourceLineNo">031</span> */<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>public final class OptionConverter {<a name="line.32"></a> |
| <span class="sourceLineNo">033</span><a name="line.33"></a> |
| <span class="sourceLineNo">034</span> private static final Logger LOGGER = StatusLogger.getLogger();<a name="line.34"></a> |
| <span class="sourceLineNo">035</span><a name="line.35"></a> |
| <span class="sourceLineNo">036</span> private static final String DELIM_START = "${";<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> private static final char DELIM_STOP = '}';<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> private static final int DELIM_START_LEN = 2;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> private static final int DELIM_STOP_LEN = 1;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> private static final int ONE_K = 1024;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span><a name="line.41"></a> |
| <span class="sourceLineNo">042</span> /**<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * OptionConverter is a static class.<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> */<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> private OptionConverter() {<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> }<a name="line.46"></a> |
| <span class="sourceLineNo">047</span><a name="line.47"></a> |
| <span class="sourceLineNo">048</span> public static String[] concatenateArrays(final String[] l, final String[] r) {<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> final int len = l.length + r.length;<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> final String[] a = new String[len];<a name="line.50"></a> |
| <span class="sourceLineNo">051</span><a name="line.51"></a> |
| <span class="sourceLineNo">052</span> System.arraycopy(l, 0, a, 0, l.length);<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> System.arraycopy(r, 0, a, l.length, r.length);<a name="line.53"></a> |
| <span class="sourceLineNo">054</span><a name="line.54"></a> |
| <span class="sourceLineNo">055</span> return a;<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> }<a name="line.56"></a> |
| <span class="sourceLineNo">057</span><a name="line.57"></a> |
| <span class="sourceLineNo">058</span> public static String convertSpecialChars(final String s) {<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> char c;<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> final int len = s.length();<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> final StringBuilder sbuf = new StringBuilder(len);<a name="line.61"></a> |
| <span class="sourceLineNo">062</span><a name="line.62"></a> |
| <span class="sourceLineNo">063</span> int i = 0;<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> while (i < len) {<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> c = s.charAt(i++);<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> if (c == '\\') {<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> c = s.charAt(i++);<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> switch (c) {<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> case 'n':<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> c = '\n';<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> break;<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> case 'r':<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> c = '\r';<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> break;<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> case 't':<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> c = '\t';<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> break;<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> case 'f':<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> c = '\f';<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> break;<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> case 'b':<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> c = '\b';<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> break;<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> case '"':<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> c = '\"';<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> break;<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> case '\'':<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> c = '\'';<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> break;<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> case '\\':<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> c = '\\';<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> break;<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> default:<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> // there is no default case.<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> }<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> }<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> sbuf.append(c);<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> }<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> return sbuf.toString();<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> }<a name="line.100"></a> |
| <span class="sourceLineNo">101</span><a name="line.101"></a> |
| <span class="sourceLineNo">102</span> public static Object instantiateByKey(final Properties props, final String key, final Class<?> superClass,<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> final Object defaultValue) {<a name="line.103"></a> |
| <span class="sourceLineNo">104</span><a name="line.104"></a> |
| <span class="sourceLineNo">105</span> // Get the value of the property in string form<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> final String className = findAndSubst(key, props);<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> if (className == null) {<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> LOGGER.error("Could not find value for key {}", key);<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> return defaultValue;<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> }<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> // Trim className to avoid trailing spaces that cause problems.<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> return OptionConverter.instantiateByClassName(className.trim(), superClass,<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> defaultValue);<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> }<a name="line.114"></a> |
| <span class="sourceLineNo">115</span><a name="line.115"></a> |
| <span class="sourceLineNo">116</span> /**<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> * If <code>value</code> is "true", then {@code true} is<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> * returned. If <code>value</code> is "false", then<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> * {@code false} is returned. Otherwise, <code>default</code> is<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> * returned.<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> *<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> * <p>Case of value is unimportant.</p><a name="line.122"></a> |
| <span class="sourceLineNo">123</span> * @param value The value to convert.<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> * @param defaultValue The default value.<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> * @return true or false, depending on the value and/or default.<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> */<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> public static boolean toBoolean(final String value, final boolean defaultValue) {<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> if (value == null) {<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> return defaultValue;<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> }<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> final String trimmedVal = value.trim();<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> if ("true".equalsIgnoreCase(trimmedVal)) {<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> return true;<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> }<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> if ("false".equalsIgnoreCase(trimmedVal)) {<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> return false;<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> }<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> return defaultValue;<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> * Convert the String value to an int.<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> * @param value The value as a String.<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> * @param defaultValue The default value.<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> * @return The value as an int.<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> */<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> public static int toInt(final String value, final int defaultValue) {<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> if (value != null) {<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> final String s = value.trim();<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> try {<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> return Integer.parseInt(s);<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> } catch (final NumberFormatException e) {<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> LOGGER.error("[{}] is not in proper int form.", s, e);<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> }<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> }<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> return defaultValue;<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> public static Level toLevel(String value, Level defaultValue) {<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> if(value == null) {<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> return defaultValue;<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> }<a name="line.162"></a> |
| <span class="sourceLineNo">163</span><a name="line.163"></a> |
| <span class="sourceLineNo">164</span> value = value.trim();<a name="line.164"></a> |
| <span class="sourceLineNo">165</span><a name="line.165"></a> |
| <span class="sourceLineNo">166</span> int hashIndex = value.indexOf('#');<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> if (hashIndex == -1) {<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> if("NULL".equalsIgnoreCase(value)) {<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> return null;<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> } else {<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> // no class name specified : use standard Level class<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> return Level.toLevel(value, defaultValue);<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> }<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> }<a name="line.174"></a> |
| <span class="sourceLineNo">175</span><a name="line.175"></a> |
| <span class="sourceLineNo">176</span> Level result = defaultValue;<a name="line.176"></a> |
| <span class="sourceLineNo">177</span><a name="line.177"></a> |
| <span class="sourceLineNo">178</span> String clazz = value.substring(hashIndex+1);<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> String levelName = value.substring(0, hashIndex);<a name="line.179"></a> |
| <span class="sourceLineNo">180</span><a name="line.180"></a> |
| <span class="sourceLineNo">181</span> // This is degenerate case but you never know.<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> if("NULL".equalsIgnoreCase(levelName)) {<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> return null;<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> LOGGER.debug("toLevel" + ":class=[" + clazz + "]"<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> + ":pri=[" + levelName + "]");<a name="line.187"></a> |
| <span class="sourceLineNo">188</span><a name="line.188"></a> |
| <span class="sourceLineNo">189</span> try {<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> Class customLevel = Loader.loadClass(clazz);<a name="line.190"></a> |
| <span class="sourceLineNo">191</span><a name="line.191"></a> |
| <span class="sourceLineNo">192</span> // get a ref to the specified class' static method<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> // toLevel(String, org.apache.log4j.Level)<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> Class[] paramTypes = new Class[] { String.class, Level.class<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> };<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> java.lang.reflect.Method toLevelMethod =<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> customLevel.getMethod("toLevel", paramTypes);<a name="line.197"></a> |
| <span class="sourceLineNo">198</span><a name="line.198"></a> |
| <span class="sourceLineNo">199</span> // now call the toLevel method, passing level string + default<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> Object[] params = new Object[] {levelName, defaultValue};<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> Object o = toLevelMethod.invoke(null, params);<a name="line.201"></a> |
| <span class="sourceLineNo">202</span><a name="line.202"></a> |
| <span class="sourceLineNo">203</span> result = (Level) o;<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> } catch(ClassNotFoundException e) {<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> LOGGER.warn("custom level class [" + clazz + "] not found.");<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> } catch(NoSuchMethodException e) {<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> LOGGER.warn("custom level class [" + clazz + "]"<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> + " does not have a class function toLevel(String, Level)", e);<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> } catch(java.lang.reflect.InvocationTargetException e) {<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> if (e.getTargetException() instanceof InterruptedException<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> || e.getTargetException() instanceof InterruptedIOException) {<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> Thread.currentThread().interrupt();<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> }<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> LOGGER.warn("custom level class [" + clazz + "]" + " could not be instantiated", e);<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> } catch(ClassCastException e) {<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> LOGGER.warn("class [" + clazz + "] is not a subclass of org.apache.log4j.Level", e);<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> } catch(IllegalAccessException e) {<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> LOGGER.warn("class ["+clazz+ "] cannot be instantiated due to access restrictions", e);<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> } catch(RuntimeException e) {<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> LOGGER.warn("class ["+clazz+"], level [" + levelName + "] conversion failed.", e);<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> }<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> return result;<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> }<a name="line.223"></a> |
| <span class="sourceLineNo">224</span><a name="line.224"></a> |
| <span class="sourceLineNo">225</span> /**<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> *<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> * @param value The size of the file as a String.<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> * @param defaultValue The default value.<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> * @return The size of the file as a long.<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> */<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> public static long toFileSize(final String value, final long defaultValue) {<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> if (value == null) {<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> return defaultValue;<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> }<a name="line.234"></a> |
| <span class="sourceLineNo">235</span><a name="line.235"></a> |
| <span class="sourceLineNo">236</span> String str = value.trim().toUpperCase(Locale.ENGLISH);<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> long multiplier = 1;<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> int index;<a name="line.238"></a> |
| <span class="sourceLineNo">239</span><a name="line.239"></a> |
| <span class="sourceLineNo">240</span> if ((index = str.indexOf("KB")) != -1) {<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> multiplier = ONE_K;<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> str = str.substring(0, index);<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> } else if ((index = str.indexOf("MB")) != -1) {<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> multiplier = ONE_K * ONE_K;<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> str = str.substring(0, index);<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> } else if ((index = str.indexOf("GB")) != -1) {<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> multiplier = ONE_K * ONE_K * ONE_K;<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> str = str.substring(0, index);<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> }<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> try {<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> return Long.parseLong(str) * multiplier;<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> } catch (final NumberFormatException e) {<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> LOGGER.error("[{}] is not in proper int form.", str);<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> LOGGER.error("[{}] not in expected format.", value, e);<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> }<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> return defaultValue;<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> }<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> * Find the value corresponding to <code>key</code> in<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> * <code>props</code>. Then perform variable substitution on the<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> * found value.<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> * @param key The key to locate.<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> * @param props The properties.<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> * @return The String after substitution.<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> */<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> public static String findAndSubst(final String key, final Properties props) {<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> final String value = props.getProperty(key);<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> if (value == null) {<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> return null;<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> }<a name="line.271"></a> |
| <span class="sourceLineNo">272</span><a name="line.272"></a> |
| <span class="sourceLineNo">273</span> try {<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> return substVars(value, props);<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> } catch (final IllegalArgumentException e) {<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> LOGGER.error("Bad option value [{}].", value, e);<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> return value;<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> }<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> }<a name="line.279"></a> |
| <span class="sourceLineNo">280</span><a name="line.280"></a> |
| <span class="sourceLineNo">281</span> /**<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> * Instantiate an object given a class name. Check that the<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> * <code>className</code> is a subclass of<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> * <code>superClass</code>. If that test fails or the object could<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> * not be instantiated, then <code>defaultValue</code> is returned.<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> *<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> * @param className The fully qualified class name of the object to instantiate.<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> * @param superClass The class to which the new object should belong.<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> * @param defaultValue The object to return in case of non-fulfillment<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> * @return The created object.<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> */<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> public static Object instantiateByClassName(final String className, final Class<?> superClass,<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> final Object defaultValue) {<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> if (className != null) {<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> try {<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> final Class<?> classObj = Loader.loadClass(className);<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> if (!superClass.isAssignableFrom(classObj)) {<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> LOGGER.error("A \"{}\" object is not assignable to a \"{}\" variable.", className,<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> superClass.getName());<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> LOGGER.error("The class \"{}\" was loaded by [{}] whereas object of type [{}] was loaded by [{}].",<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> superClass.getName(), superClass.getClassLoader(), classObj.getName());<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> return defaultValue;<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> }<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> return classObj.newInstance();<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> } catch (final Exception e) {<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> LOGGER.error("Could not instantiate class [{}].", className, e);<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> }<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> }<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> return defaultValue;<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> }<a name="line.310"></a> |
| <span class="sourceLineNo">311</span><a name="line.311"></a> |
| <span class="sourceLineNo">312</span><a name="line.312"></a> |
| <span class="sourceLineNo">313</span> /**<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> * Perform variable substitution in string <code>val</code> from the<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> * values of keys found in the system propeties.<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> *<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> * <p>The variable substitution delimiters are <b>${</b> and <b>}</b>.</p><a name="line.317"></a> |
| <span class="sourceLineNo">318</span> *<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> * <p>For example, if the System properties contains "key=value", then<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> * the call</p><a name="line.320"></a> |
| <span class="sourceLineNo">321</span> * <pre><a name="line.321"></a> |
| <span class="sourceLineNo">322</span> * String s = OptionConverter.substituteVars("Value of key is ${key}.");<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> * </pre><a name="line.323"></a> |
| <span class="sourceLineNo">324</span> * <p><a name="line.324"></a> |
| <span class="sourceLineNo">325</span> * will set the variable <code>s</code> to "Value of key is value.".<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> * </p><a name="line.326"></a> |
| <span class="sourceLineNo">327</span> * <p>If no value could be found for the specified key, then the<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> * <code>props</code> parameter is searched, if the value could not<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> * be found there, then substitution defaults to the empty string.</p><a name="line.329"></a> |
| <span class="sourceLineNo">330</span> *<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> * <p>For example, if system properties contains no value for the key<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> * "inexistentKey", then the call<a name="line.332"></a> |
| <span class="sourceLineNo">333</span> * </p><a name="line.333"></a> |
| <span class="sourceLineNo">334</span> * <pre><a name="line.334"></a> |
| <span class="sourceLineNo">335</span> * String s = OptionConverter.subsVars("Value of inexistentKey is [${inexistentKey}]");<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> * </pre><a name="line.336"></a> |
| <span class="sourceLineNo">337</span> * <p><a name="line.337"></a> |
| <span class="sourceLineNo">338</span> * will set <code>s</code> to "Value of inexistentKey is []"<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> * </p><a name="line.339"></a> |
| <span class="sourceLineNo">340</span> * <p>An {@link java.lang.IllegalArgumentException} is thrown if<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> * <code>val</code> contains a start delimeter "${" which is not<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> * balanced by a stop delimeter "}". </p><a name="line.342"></a> |
| <span class="sourceLineNo">343</span> *<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> * @param val The string on which variable substitution is performed.<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> * @param props The properties to use for substitution.<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> * @return The String after substitution.<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> * @throws IllegalArgumentException if <code>val</code> is malformed.<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> */<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> public static String substVars(final String val, final Properties props) throws<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> IllegalArgumentException {<a name="line.350"></a> |
| <span class="sourceLineNo">351</span><a name="line.351"></a> |
| <span class="sourceLineNo">352</span> final StringBuilder sbuf = new StringBuilder();<a name="line.352"></a> |
| <span class="sourceLineNo">353</span><a name="line.353"></a> |
| <span class="sourceLineNo">354</span> int i = 0;<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> int j;<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> int k;<a name="line.356"></a> |
| <span class="sourceLineNo">357</span><a name="line.357"></a> |
| <span class="sourceLineNo">358</span> while (true) {<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> j = val.indexOf(DELIM_START, i);<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> if (j == -1) {<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> // no more variables<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> if (i == 0) { // this is a simple string<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> return val;<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> }<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> // add the tail string which contails no variables and return the result.<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> sbuf.append(val.substring(i, val.length()));<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> return sbuf.toString();<a name="line.367"></a> |
| <span class="sourceLineNo">368</span> }<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> sbuf.append(val.substring(i, j));<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> k = val.indexOf(DELIM_STOP, j);<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> if (k == -1) {<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> throw new IllegalArgumentException(Strings.dquote(val)<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> + " has no closing brace. Opening brace at position " + j<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> + '.');<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> }<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> j += DELIM_START_LEN;<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> final String key = val.substring(j, k);<a name="line.377"></a> |
| <span class="sourceLineNo">378</span> // first try in System properties<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> String replacement = PropertiesUtil.getProperties().getStringProperty(key, null);<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> // then try props parameter<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> if (replacement == null && props != null) {<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> replacement = props.getProperty(key);<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> }<a name="line.383"></a> |
| <span class="sourceLineNo">384</span><a name="line.384"></a> |
| <span class="sourceLineNo">385</span> if (replacement != null) {<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> // Do variable substitution on the replacement string<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> // such that we can solve "Hello ${x2}" as "Hello p1"<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> // the where the properties are<a name="line.388"></a> |
| <span class="sourceLineNo">389</span> // x1=p1<a name="line.389"></a> |
| <span class="sourceLineNo">390</span> // x2=${x1}<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> final String recursiveReplacement = substVars(replacement, props);<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> sbuf.append(recursiveReplacement);<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> }<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> i = k + DELIM_STOP_LEN;<a name="line.394"></a> |
| <span class="sourceLineNo">395</span> }<a name="line.395"></a> |
| <span class="sourceLineNo">396</span> }<a name="line.396"></a> |
| <span class="sourceLineNo">397</span>}<a name="line.397"></a> |
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| </div> |
| </body> |
| </html> |
