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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><a name="line.17"></a> |
| <span class="sourceLineNo">018</span>package org.apache.logging.log4j.core.pattern;<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import org.apache.logging.log4j.util.PerformanceSensitive;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>/**<a name="line.22"></a> |
| <span class="sourceLineNo">023</span> * Modifies the output of a pattern converter for a specified minimum and maximum width and alignment.<a name="line.23"></a> |
| <span class="sourceLineNo">024</span> */<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>@PerformanceSensitive("allocation")<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>public final class FormattingInfo {<a name="line.26"></a> |
| <span class="sourceLineNo">027</span> /**<a name="line.27"></a> |
| <span class="sourceLineNo">028</span> * Array of spaces.<a name="line.28"></a> |
| <span class="sourceLineNo">029</span> */<a name="line.29"></a> |
| <span class="sourceLineNo">030</span> private static final char[] SPACES = new char[] { ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ' };<a name="line.30"></a> |
| <span class="sourceLineNo">031</span><a name="line.31"></a> |
| <span class="sourceLineNo">032</span> /**<a name="line.32"></a> |
| <span class="sourceLineNo">033</span> * Array of zeros.<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> */<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> private static final char[] ZEROS = new char[] { '0', '0', '0', '0', '0', '0', '0', '0' };<a name="line.35"></a> |
| <span class="sourceLineNo">036</span><a name="line.36"></a> |
| <span class="sourceLineNo">037</span> /**<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * Default instance.<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> */<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> private static final FormattingInfo DEFAULT = new FormattingInfo(false, 0, Integer.MAX_VALUE, true);<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> * Minimum length.<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> */<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> private final int minLength;<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> * Maximum length.<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> */<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> private final int maxLength;<a name="line.50"></a> |
| <span class="sourceLineNo">051</span><a name="line.51"></a> |
| <span class="sourceLineNo">052</span> /**<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * Alignment.<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> */<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> private final boolean leftAlign;<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> * Left vs. right-hand side truncation.<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> */<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> private final boolean leftTruncate;<a name="line.60"></a> |
| <span class="sourceLineNo">061</span><a name="line.61"></a> |
| <span class="sourceLineNo">062</span> /**<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> * Use zero-padding instead whitespace padding<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> */<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> private final boolean zeroPad;<a name="line.65"></a> |
| <span class="sourceLineNo">066</span><a name="line.66"></a> |
| <span class="sourceLineNo">067</span> /**<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> * Creates new instance.<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> *<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> * @param leftAlign<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> * left align if true.<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> * @param minLength<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * minimum length.<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> * @param maxLength<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> * maximum length.<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> * @param leftTruncate<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> * truncates to the left if true<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> */<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> public FormattingInfo(final boolean leftAlign, final int minLength, final int maxLength, final boolean leftTruncate) {<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> this(leftAlign, minLength, maxLength, leftTruncate, false);<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> }<a name="line.81"></a> |
| <span class="sourceLineNo">082</span><a name="line.82"></a> |
| <span class="sourceLineNo">083</span> /**<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> * Creates new instance.<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> *<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> * @param leftAlign<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> * left align if true.<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> * @param minLength<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> * minimum length.<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> * @param maxLength<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> * maximum length.<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> * @param leftTruncate<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> * truncates to the left if true<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> * @param zeroPad<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> * use zero-padding instead of whitespace-padding<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> */<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> public FormattingInfo(final boolean leftAlign, final int minLength, final int maxLength, final boolean leftTruncate, final boolean zeroPad) {<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> this.leftAlign = leftAlign;<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> this.minLength = minLength;<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> this.maxLength = maxLength;<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> this.leftTruncate = leftTruncate;<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> this.zeroPad = zeroPad;<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> /**<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> * Gets default instance.<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> *<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> * @return default instance.<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> */<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> public static FormattingInfo getDefault() {<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> return DEFAULT;<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> * Determine if left aligned.<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> *<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> * @return true if left aligned.<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> */<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> public boolean isLeftAligned() {<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> return leftAlign;<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> * Determine if left truncated.<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> *<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> * @return true if left truncated.<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> */<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> public boolean isLeftTruncate() {<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> return leftTruncate;<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> * Determine if zero-padded.<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> *<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> * @return true if zero-padded.<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> */<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> public boolean isZeroPad() {<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> return zeroPad;<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> * Get minimum length.<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> *<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> * @return minimum length.<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> */<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> public int getMinLength() {<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> return minLength;<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> * Get maximum length.<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> *<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> * @return maximum length.<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> */<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> public int getMaxLength() {<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> return maxLength;<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> * Adjust the content of the buffer based on the specified lengths and alignment.<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> *<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> * @param fieldStart<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> * start of field in buffer.<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> * @param buffer<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> * buffer to be modified.<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> */<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> public void format(final int fieldStart, final StringBuilder buffer) {<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> final int rawLength = buffer.length() - fieldStart;<a name="line.168"></a> |
| <span class="sourceLineNo">169</span><a name="line.169"></a> |
| <span class="sourceLineNo">170</span> if (rawLength > maxLength) {<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> if (leftTruncate) {<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> buffer.delete(fieldStart, buffer.length() - maxLength);<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> } else {<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> buffer.delete(fieldStart + maxLength, fieldStart + buffer.length());<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> }<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> } else if (rawLength < minLength) {<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> if (leftAlign) {<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> final int fieldEnd = buffer.length();<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> buffer.setLength(fieldStart + minLength);<a name="line.179"></a> |
| <span class="sourceLineNo">180</span><a name="line.180"></a> |
| <span class="sourceLineNo">181</span> for (int i = fieldEnd; i < buffer.length(); i++) {<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> buffer.setCharAt(i, ' ');<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> }<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> } else {<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> int padLength = minLength - rawLength;<a name="line.185"></a> |
| <span class="sourceLineNo">186</span><a name="line.186"></a> |
| <span class="sourceLineNo">187</span> final char[] paddingArray= zeroPad ? ZEROS : SPACES;<a name="line.187"></a> |
| <span class="sourceLineNo">188</span><a name="line.188"></a> |
| <span class="sourceLineNo">189</span> for (; padLength > paddingArray.length; padLength -= paddingArray.length) {<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> buffer.insert(fieldStart, paddingArray);<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> }<a name="line.191"></a> |
| <span class="sourceLineNo">192</span><a name="line.192"></a> |
| <span class="sourceLineNo">193</span> buffer.insert(fieldStart, paddingArray, 0, padLength);<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> }<a name="line.196"></a> |
| <span class="sourceLineNo">197</span><a name="line.197"></a> |
| <span class="sourceLineNo">198</span> /**<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> * Returns a String suitable for debugging.<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> *<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> * @return a String suitable for debugging.<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> */<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> @Override<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> public String toString() {<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> final StringBuilder sb = new StringBuilder();<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> sb.append(super.toString());<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> sb.append("[leftAlign=");<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> sb.append(leftAlign);<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> sb.append(", maxLength=");<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> sb.append(maxLength);<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> sb.append(", minLength=");<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> sb.append(minLength);<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> sb.append(", leftTruncate=");<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> sb.append(leftTruncate);<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> sb.append(", zeroPad=");<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> sb.append(zeroPad);<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> sb.append(']');<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> return sb.toString();<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> }<a name="line.219"></a> |
| <span class="sourceLineNo">220</span><a name="line.220"></a> |
| <span class="sourceLineNo">221</span>}<a name="line.221"></a> |
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| </pre> |
| </div> |
| </body> |
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