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| <pre><span class="sourceLineNo">001</span>package org.apache.archiva.xml;<a name="line.1"></a> |
| <span class="sourceLineNo">002</span><a name="line.2"></a> |
| <span class="sourceLineNo">003</span>/*<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * or more contributor license agreements. See the NOTICE file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * distributed with this work for additional information<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * regarding copyright ownership. The ASF licenses this file<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * to you under the Apache License, Version 2.0 (the<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> * "License"); you may not use this file except in compliance<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * with the License. You may obtain a copy of the License at<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> *<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * Unless required by applicable law or agreed to in writing,<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * software distributed under the License is distributed on an<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * KIND, either express or implied. See the License for the<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> * specific language governing permissions and limitations<a name="line.18"></a> |
| <span class="sourceLineNo">019</span> * under the License.<a name="line.19"></a> |
| <span class="sourceLineNo">020</span> */<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.io.BufferedReader;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.io.IOException;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.io.Reader;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.util.regex.Matcher;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.util.regex.Pattern;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span><a name="line.27"></a> |
| <span class="sourceLineNo">028</span>/**<a name="line.28"></a> |
| <span class="sourceLineNo">029</span> * LatinEntityResolutionReader - Read a Character Stream.<a name="line.29"></a> |
| <span class="sourceLineNo">030</span> *<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>public class LatinEntityResolutionReader<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> extends Reader<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>{<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> private BufferedReader originalReader;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span><a name="line.37"></a> |
| <span class="sourceLineNo">038</span> private char leftover[];<a name="line.38"></a> |
| <span class="sourceLineNo">039</span><a name="line.39"></a> |
| <span class="sourceLineNo">040</span> private Pattern entityPattern;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span><a name="line.41"></a> |
| <span class="sourceLineNo">042</span> public LatinEntityResolutionReader( Reader reader )<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> {<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> this.originalReader = new BufferedReader( reader );<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> this.entityPattern = Pattern.compile( "\\&[a-zA-Z]+\\;" );<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> /**<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * Read characters into a portion of an array. This method will block until some input is available, <a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * an I/O error occurs, or the end of the stream is reached.<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * <a name="line.51"></a> |
| <span class="sourceLineNo">052</span> * @param destbuf Destination buffer<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * @param offset Offset (in destination buffer) at which to start storing characters<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> * @param length Maximum number of characters to read<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * @return The number of characters read, or -1 if the end of the stream has been reached<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * @throws IOException if an I/O error occurs.<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> */<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> @Override<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> public int read( char[] destbuf, int offset, int length )<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> throws IOException<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> {<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> int tmpLength;<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> int currentRequestedOffset = offset;<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> int currentRequestedLength = length;<a name="line.64"></a> |
| <span class="sourceLineNo">065</span><a name="line.65"></a> |
| <span class="sourceLineNo">066</span> // Drain leftover from last read request.<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> if ( leftover != null )<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> {<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> if ( leftover.length > length )<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> {<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> // Copy partial leftover.<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> System.arraycopy( leftover, 0, destbuf, currentRequestedOffset, length );<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> int copyLeftOverLength = leftover.length - length;<a name="line.73"></a> |
| <span class="sourceLineNo">074</span><a name="line.74"></a> |
| <span class="sourceLineNo">075</span> // Create new leftover of remaining.<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> char tmp[] = new char[copyLeftOverLength];<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> System.arraycopy( leftover, length, tmp, 0, copyLeftOverLength );<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> leftover = new char[tmp.length];<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> System.arraycopy( tmp, 0, leftover, 0, copyLeftOverLength );<a name="line.79"></a> |
| <span class="sourceLineNo">080</span><a name="line.80"></a> |
| <span class="sourceLineNo">081</span> // Return len<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> return length;<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> }<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> else<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> {<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> tmpLength = leftover.length;<a name="line.86"></a> |
| <span class="sourceLineNo">087</span><a name="line.87"></a> |
| <span class="sourceLineNo">088</span> // Copy full leftover<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> System.arraycopy( leftover, 0, destbuf, currentRequestedOffset, tmpLength );<a name="line.89"></a> |
| <span class="sourceLineNo">090</span><a name="line.90"></a> |
| <span class="sourceLineNo">091</span> // Empty out leftover (as there is now none left)<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> leftover = null;<a name="line.92"></a> |
| <span class="sourceLineNo">093</span><a name="line.93"></a> |
| <span class="sourceLineNo">094</span> // Adjust offset and lengths.<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> currentRequestedOffset += tmpLength;<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> currentRequestedLength -= tmpLength;<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> }<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> }<a name="line.98"></a> |
| <span class="sourceLineNo">099</span><a name="line.99"></a> |
| <span class="sourceLineNo">100</span> StringBuilder sbuf = getExpandedBuffer( currentRequestedLength );<a name="line.100"></a> |
| <span class="sourceLineNo">101</span><a name="line.101"></a> |
| <span class="sourceLineNo">102</span> // Have we reached the end of the buffer?<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> if ( sbuf == null )<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> {<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> // Do we have content?<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> if ( currentRequestedOffset > offset )<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> {<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> // Signal that we do, by calculating length.<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> return ( currentRequestedOffset - offset );<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> }<a name="line.110"></a> |
| <span class="sourceLineNo">111</span><a name="line.111"></a> |
| <span class="sourceLineNo">112</span> // No content. signal end of buffer.<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> return -1;<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> // Copy from expanded buf whatever length we can accomodate.<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> tmpLength = Math.min( sbuf.length(), currentRequestedLength );<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> sbuf.getChars( 0, tmpLength, destbuf, currentRequestedOffset );<a name="line.118"></a> |
| <span class="sourceLineNo">119</span><a name="line.119"></a> |
| <span class="sourceLineNo">120</span> // Create the leftover (if any)<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> if ( tmpLength < sbuf.length() )<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> {<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> leftover = new char[sbuf.length() - tmpLength];<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> sbuf.getChars( tmpLength, tmpLength + leftover.length, leftover, 0 );<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> }<a name="line.125"></a> |
| <span class="sourceLineNo">126</span><a name="line.126"></a> |
| <span class="sourceLineNo">127</span> // Calculate Actual Length and return.<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> return ( currentRequestedOffset - offset ) + tmpLength;<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> }<a name="line.129"></a> |
| <span class="sourceLineNo">130</span><a name="line.130"></a> |
| <span class="sourceLineNo">131</span> private StringBuilder getExpandedBuffer( int minimumLength )<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> throws IOException<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> {<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> StringBuilder buf = null;<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> String line = this.originalReader.readLine();<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> boolean done = ( line == null );<a name="line.136"></a> |
| <span class="sourceLineNo">137</span><a name="line.137"></a> |
| <span class="sourceLineNo">138</span> while ( !done )<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> {<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> if ( buf == null )<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> {<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> buf = new StringBuilder();<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> }<a name="line.143"></a> |
| <span class="sourceLineNo">144</span><a name="line.144"></a> |
| <span class="sourceLineNo">145</span> buf.append( expandLine( line ) );<a name="line.145"></a> |
| <span class="sourceLineNo">146</span><a name="line.146"></a> |
| <span class="sourceLineNo">147</span> // Add newline only if there is more data.<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> if ( this.originalReader.ready() )<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> {<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> buf.append( "\n" );<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> }<a name="line.151"></a> |
| <span class="sourceLineNo">152</span><a name="line.152"></a> |
| <span class="sourceLineNo">153</span> if ( buf.length() > minimumLength )<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> {<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> done = true;<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> }<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> else<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> {<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> line = this.originalReader.readLine();<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> done = ( line == null );<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> }<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> return buf;<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> }<a name="line.165"></a> |
| <span class="sourceLineNo">166</span><a name="line.166"></a> |
| <span class="sourceLineNo">167</span> private String expandLine( String line )<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> {<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> StringBuilder ret = new StringBuilder();<a name="line.169"></a> |
| <span class="sourceLineNo">170</span><a name="line.170"></a> |
| <span class="sourceLineNo">171</span> int offset = 0;<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> String entity;<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> Matcher mat = this.entityPattern.matcher( line );<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> while ( mat.find( offset ) )<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> {<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> ret.append( line.substring( offset, mat.start() ) );<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> entity = mat.group();<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> ret.append( LatinEntities.resolveEntity( entity ) );<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> offset = mat.start() + entity.length();<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> }<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> ret.append( line.substring( offset ) );<a name="line.181"></a> |
| <span class="sourceLineNo">182</span><a name="line.182"></a> |
| <span class="sourceLineNo">183</span> return ret.toString();<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> @Override<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> public void close()<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> throws IOException<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> {<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> this.originalReader.close();<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> |
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| </pre> |
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