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| <PRE> |
| <FONT color="green">001</FONT> package org.apache.archiva.xml;<a name="line.1"></a> |
| <FONT color="green">002</FONT> <a name="line.2"></a> |
| <FONT color="green">003</FONT> /*<a name="line.3"></a> |
| <FONT color="green">004</FONT> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.4"></a> |
| <FONT color="green">005</FONT> * or more contributor license agreements. See the NOTICE file<a name="line.5"></a> |
| <FONT color="green">006</FONT> * distributed with this work for additional information<a name="line.6"></a> |
| <FONT color="green">007</FONT> * regarding copyright ownership. The ASF licenses this file<a name="line.7"></a> |
| <FONT color="green">008</FONT> * to you under the Apache License, Version 2.0 (the<a name="line.8"></a> |
| <FONT color="green">009</FONT> * "License"); you may not use this file except in compliance<a name="line.9"></a> |
| <FONT color="green">010</FONT> * with the License. You may obtain a copy of the License at<a name="line.10"></a> |
| <FONT color="green">011</FONT> *<a name="line.11"></a> |
| <FONT color="green">012</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.12"></a> |
| <FONT color="green">013</FONT> *<a name="line.13"></a> |
| <FONT color="green">014</FONT> * Unless required by applicable law or agreed to in writing,<a name="line.14"></a> |
| <FONT color="green">015</FONT> * software distributed under the License is distributed on an<a name="line.15"></a> |
| <FONT color="green">016</FONT> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.16"></a> |
| <FONT color="green">017</FONT> * KIND, either express or implied. See the License for the<a name="line.17"></a> |
| <FONT color="green">018</FONT> * specific language governing permissions and limitations<a name="line.18"></a> |
| <FONT color="green">019</FONT> * under the License.<a name="line.19"></a> |
| <FONT color="green">020</FONT> */<a name="line.20"></a> |
| <FONT color="green">021</FONT> <a name="line.21"></a> |
| <FONT color="green">022</FONT> import java.io.BufferedReader;<a name="line.22"></a> |
| <FONT color="green">023</FONT> import java.io.IOException;<a name="line.23"></a> |
| <FONT color="green">024</FONT> import java.io.Reader;<a name="line.24"></a> |
| <FONT color="green">025</FONT> import java.util.regex.Matcher;<a name="line.25"></a> |
| <FONT color="green">026</FONT> import java.util.regex.Pattern;<a name="line.26"></a> |
| <FONT color="green">027</FONT> <a name="line.27"></a> |
| <FONT color="green">028</FONT> /**<a name="line.28"></a> |
| <FONT color="green">029</FONT> * LatinEntityResolutionReader - Read a Character Stream.<a name="line.29"></a> |
| <FONT color="green">030</FONT> *<a name="line.30"></a> |
| <FONT color="green">031</FONT> *<a name="line.31"></a> |
| <FONT color="green">032</FONT> */<a name="line.32"></a> |
| <FONT color="green">033</FONT> public class LatinEntityResolutionReader<a name="line.33"></a> |
| <FONT color="green">034</FONT> extends Reader<a name="line.34"></a> |
| <FONT color="green">035</FONT> {<a name="line.35"></a> |
| <FONT color="green">036</FONT> private BufferedReader originalReader;<a name="line.36"></a> |
| <FONT color="green">037</FONT> <a name="line.37"></a> |
| <FONT color="green">038</FONT> private char leftover[];<a name="line.38"></a> |
| <FONT color="green">039</FONT> <a name="line.39"></a> |
| <FONT color="green">040</FONT> private Pattern entityPattern;<a name="line.40"></a> |
| <FONT color="green">041</FONT> <a name="line.41"></a> |
| <FONT color="green">042</FONT> public LatinEntityResolutionReader( Reader reader )<a name="line.42"></a> |
| <FONT color="green">043</FONT> {<a name="line.43"></a> |
| <FONT color="green">044</FONT> this.originalReader = new BufferedReader( reader );<a name="line.44"></a> |
| <FONT color="green">045</FONT> this.entityPattern = Pattern.compile( "\\&[a-zA-Z]+\\;" );<a name="line.45"></a> |
| <FONT color="green">046</FONT> }<a name="line.46"></a> |
| <FONT color="green">047</FONT> <a name="line.47"></a> |
| <FONT color="green">048</FONT> /**<a name="line.48"></a> |
| <FONT color="green">049</FONT> * Read characters into a portion of an array. This method will block until some input is available, <a name="line.49"></a> |
| <FONT color="green">050</FONT> * an I/O error occurs, or the end of the stream is reached.<a name="line.50"></a> |
| <FONT color="green">051</FONT> * <a name="line.51"></a> |
| <FONT color="green">052</FONT> * @param destbuf Destination buffer<a name="line.52"></a> |
| <FONT color="green">053</FONT> * @param offset Offset (in destination buffer) at which to start storing characters<a name="line.53"></a> |
| <FONT color="green">054</FONT> * @param length Maximum number of characters to read<a name="line.54"></a> |
| <FONT color="green">055</FONT> * @return The number of characters read, or -1 if the end of the stream has been reached<a name="line.55"></a> |
| <FONT color="green">056</FONT> * @throws IOException if an I/O error occurs.<a name="line.56"></a> |
| <FONT color="green">057</FONT> */<a name="line.57"></a> |
| <FONT color="green">058</FONT> public int read( char[] destbuf, int offset, int length )<a name="line.58"></a> |
| <FONT color="green">059</FONT> throws IOException<a name="line.59"></a> |
| <FONT color="green">060</FONT> {<a name="line.60"></a> |
| <FONT color="green">061</FONT> int tmpLength;<a name="line.61"></a> |
| <FONT color="green">062</FONT> int currentRequestedOffset = offset;<a name="line.62"></a> |
| <FONT color="green">063</FONT> int currentRequestedLength = length;<a name="line.63"></a> |
| <FONT color="green">064</FONT> <a name="line.64"></a> |
| <FONT color="green">065</FONT> // Drain leftover from last read request.<a name="line.65"></a> |
| <FONT color="green">066</FONT> if ( leftover != null )<a name="line.66"></a> |
| <FONT color="green">067</FONT> {<a name="line.67"></a> |
| <FONT color="green">068</FONT> if ( leftover.length > length )<a name="line.68"></a> |
| <FONT color="green">069</FONT> {<a name="line.69"></a> |
| <FONT color="green">070</FONT> // Copy partial leftover.<a name="line.70"></a> |
| <FONT color="green">071</FONT> System.arraycopy( leftover, 0, destbuf, currentRequestedOffset, length );<a name="line.71"></a> |
| <FONT color="green">072</FONT> int copyLeftOverLength = leftover.length - length;<a name="line.72"></a> |
| <FONT color="green">073</FONT> <a name="line.73"></a> |
| <FONT color="green">074</FONT> // Create new leftover of remaining.<a name="line.74"></a> |
| <FONT color="green">075</FONT> char tmp[] = new char[copyLeftOverLength];<a name="line.75"></a> |
| <FONT color="green">076</FONT> System.arraycopy( leftover, length, tmp, 0, copyLeftOverLength );<a name="line.76"></a> |
| <FONT color="green">077</FONT> leftover = new char[tmp.length];<a name="line.77"></a> |
| <FONT color="green">078</FONT> System.arraycopy( tmp, 0, leftover, 0, copyLeftOverLength );<a name="line.78"></a> |
| <FONT color="green">079</FONT> <a name="line.79"></a> |
| <FONT color="green">080</FONT> // Return len<a name="line.80"></a> |
| <FONT color="green">081</FONT> return length;<a name="line.81"></a> |
| <FONT color="green">082</FONT> }<a name="line.82"></a> |
| <FONT color="green">083</FONT> else<a name="line.83"></a> |
| <FONT color="green">084</FONT> {<a name="line.84"></a> |
| <FONT color="green">085</FONT> tmpLength = leftover.length;<a name="line.85"></a> |
| <FONT color="green">086</FONT> <a name="line.86"></a> |
| <FONT color="green">087</FONT> // Copy full leftover<a name="line.87"></a> |
| <FONT color="green">088</FONT> System.arraycopy( leftover, 0, destbuf, currentRequestedOffset, tmpLength );<a name="line.88"></a> |
| <FONT color="green">089</FONT> <a name="line.89"></a> |
| <FONT color="green">090</FONT> // Empty out leftover (as there is now none left)<a name="line.90"></a> |
| <FONT color="green">091</FONT> leftover = null;<a name="line.91"></a> |
| <FONT color="green">092</FONT> <a name="line.92"></a> |
| <FONT color="green">093</FONT> // Adjust offset and lengths.<a name="line.93"></a> |
| <FONT color="green">094</FONT> currentRequestedOffset += tmpLength;<a name="line.94"></a> |
| <FONT color="green">095</FONT> currentRequestedLength -= tmpLength;<a name="line.95"></a> |
| <FONT color="green">096</FONT> }<a name="line.96"></a> |
| <FONT color="green">097</FONT> }<a name="line.97"></a> |
| <FONT color="green">098</FONT> <a name="line.98"></a> |
| <FONT color="green">099</FONT> StringBuilder sbuf = getExpandedBuffer( currentRequestedLength );<a name="line.99"></a> |
| <FONT color="green">100</FONT> <a name="line.100"></a> |
| <FONT color="green">101</FONT> // Have we reached the end of the buffer?<a name="line.101"></a> |
| <FONT color="green">102</FONT> if ( sbuf == null )<a name="line.102"></a> |
| <FONT color="green">103</FONT> {<a name="line.103"></a> |
| <FONT color="green">104</FONT> // Do we have content?<a name="line.104"></a> |
| <FONT color="green">105</FONT> if ( currentRequestedOffset > offset )<a name="line.105"></a> |
| <FONT color="green">106</FONT> {<a name="line.106"></a> |
| <FONT color="green">107</FONT> // Signal that we do, by calculating length.<a name="line.107"></a> |
| <FONT color="green">108</FONT> return ( currentRequestedOffset - offset );<a name="line.108"></a> |
| <FONT color="green">109</FONT> }<a name="line.109"></a> |
| <FONT color="green">110</FONT> <a name="line.110"></a> |
| <FONT color="green">111</FONT> // No content. signal end of buffer.<a name="line.111"></a> |
| <FONT color="green">112</FONT> return -1;<a name="line.112"></a> |
| <FONT color="green">113</FONT> }<a name="line.113"></a> |
| <FONT color="green">114</FONT> <a name="line.114"></a> |
| <FONT color="green">115</FONT> // Copy from expanded buf whatever length we can accomodate.<a name="line.115"></a> |
| <FONT color="green">116</FONT> tmpLength = Math.min( sbuf.length(), currentRequestedLength );<a name="line.116"></a> |
| <FONT color="green">117</FONT> sbuf.getChars( 0, tmpLength, destbuf, currentRequestedOffset );<a name="line.117"></a> |
| <FONT color="green">118</FONT> <a name="line.118"></a> |
| <FONT color="green">119</FONT> // Create the leftover (if any)<a name="line.119"></a> |
| <FONT color="green">120</FONT> if ( tmpLength < sbuf.length() )<a name="line.120"></a> |
| <FONT color="green">121</FONT> {<a name="line.121"></a> |
| <FONT color="green">122</FONT> leftover = new char[sbuf.length() - tmpLength];<a name="line.122"></a> |
| <FONT color="green">123</FONT> sbuf.getChars( tmpLength, tmpLength + leftover.length, leftover, 0 );<a name="line.123"></a> |
| <FONT color="green">124</FONT> }<a name="line.124"></a> |
| <FONT color="green">125</FONT> <a name="line.125"></a> |
| <FONT color="green">126</FONT> // Calculate Actual Length and return.<a name="line.126"></a> |
| <FONT color="green">127</FONT> return ( currentRequestedOffset - offset ) + tmpLength;<a name="line.127"></a> |
| <FONT color="green">128</FONT> }<a name="line.128"></a> |
| <FONT color="green">129</FONT> <a name="line.129"></a> |
| <FONT color="green">130</FONT> private StringBuilder getExpandedBuffer( int minimumLength )<a name="line.130"></a> |
| <FONT color="green">131</FONT> throws IOException<a name="line.131"></a> |
| <FONT color="green">132</FONT> {<a name="line.132"></a> |
| <FONT color="green">133</FONT> StringBuilder buf = null;<a name="line.133"></a> |
| <FONT color="green">134</FONT> String line = this.originalReader.readLine();<a name="line.134"></a> |
| <FONT color="green">135</FONT> boolean done = ( line == null );<a name="line.135"></a> |
| <FONT color="green">136</FONT> <a name="line.136"></a> |
| <FONT color="green">137</FONT> while ( !done )<a name="line.137"></a> |
| <FONT color="green">138</FONT> {<a name="line.138"></a> |
| <FONT color="green">139</FONT> if ( buf == null )<a name="line.139"></a> |
| <FONT color="green">140</FONT> {<a name="line.140"></a> |
| <FONT color="green">141</FONT> buf = new StringBuilder();<a name="line.141"></a> |
| <FONT color="green">142</FONT> }<a name="line.142"></a> |
| <FONT color="green">143</FONT> <a name="line.143"></a> |
| <FONT color="green">144</FONT> buf.append( expandLine( line ) );<a name="line.144"></a> |
| <FONT color="green">145</FONT> <a name="line.145"></a> |
| <FONT color="green">146</FONT> // Add newline only if there is more data.<a name="line.146"></a> |
| <FONT color="green">147</FONT> if ( this.originalReader.ready() )<a name="line.147"></a> |
| <FONT color="green">148</FONT> {<a name="line.148"></a> |
| <FONT color="green">149</FONT> buf.append( "\n" );<a name="line.149"></a> |
| <FONT color="green">150</FONT> }<a name="line.150"></a> |
| <FONT color="green">151</FONT> <a name="line.151"></a> |
| <FONT color="green">152</FONT> if ( buf.length() > minimumLength )<a name="line.152"></a> |
| <FONT color="green">153</FONT> {<a name="line.153"></a> |
| <FONT color="green">154</FONT> done = true;<a name="line.154"></a> |
| <FONT color="green">155</FONT> }<a name="line.155"></a> |
| <FONT color="green">156</FONT> else<a name="line.156"></a> |
| <FONT color="green">157</FONT> {<a name="line.157"></a> |
| <FONT color="green">158</FONT> line = this.originalReader.readLine();<a name="line.158"></a> |
| <FONT color="green">159</FONT> done = ( line == null );<a name="line.159"></a> |
| <FONT color="green">160</FONT> }<a name="line.160"></a> |
| <FONT color="green">161</FONT> }<a name="line.161"></a> |
| <FONT color="green">162</FONT> <a name="line.162"></a> |
| <FONT color="green">163</FONT> return buf;<a name="line.163"></a> |
| <FONT color="green">164</FONT> }<a name="line.164"></a> |
| <FONT color="green">165</FONT> <a name="line.165"></a> |
| <FONT color="green">166</FONT> private String expandLine( String line )<a name="line.166"></a> |
| <FONT color="green">167</FONT> {<a name="line.167"></a> |
| <FONT color="green">168</FONT> StringBuilder ret = new StringBuilder();<a name="line.168"></a> |
| <FONT color="green">169</FONT> <a name="line.169"></a> |
| <FONT color="green">170</FONT> int offset = 0;<a name="line.170"></a> |
| <FONT color="green">171</FONT> String entity;<a name="line.171"></a> |
| <FONT color="green">172</FONT> Matcher mat = this.entityPattern.matcher( line );<a name="line.172"></a> |
| <FONT color="green">173</FONT> while ( mat.find( offset ) )<a name="line.173"></a> |
| <FONT color="green">174</FONT> {<a name="line.174"></a> |
| <FONT color="green">175</FONT> ret.append( line.substring( offset, mat.start() ) );<a name="line.175"></a> |
| <FONT color="green">176</FONT> entity = mat.group();<a name="line.176"></a> |
| <FONT color="green">177</FONT> ret.append( LatinEntities.resolveEntity( entity ) );<a name="line.177"></a> |
| <FONT color="green">178</FONT> offset = mat.start() + entity.length();<a name="line.178"></a> |
| <FONT color="green">179</FONT> }<a name="line.179"></a> |
| <FONT color="green">180</FONT> ret.append( line.substring( offset ) );<a name="line.180"></a> |
| <FONT color="green">181</FONT> <a name="line.181"></a> |
| <FONT color="green">182</FONT> return ret.toString();<a name="line.182"></a> |
| <FONT color="green">183</FONT> }<a name="line.183"></a> |
| <FONT color="green">184</FONT> <a name="line.184"></a> |
| <FONT color="green">185</FONT> public void close()<a name="line.185"></a> |
| <FONT color="green">186</FONT> throws IOException<a name="line.186"></a> |
| <FONT color="green">187</FONT> {<a name="line.187"></a> |
| <FONT color="green">188</FONT> this.originalReader.close();<a name="line.188"></a> |
| <FONT color="green">189</FONT> }<a name="line.189"></a> |
| <FONT color="green">190</FONT> }<a name="line.190"></a> |
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| </PRE> |
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