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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<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing,<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * software distributed under the License is distributed on an<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * KIND, either express or implied. See the License for the<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * specific language governing permissions and limitations<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * under the License.<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> *<a name="line.18"></a> |
| <span class="sourceLineNo">019</span> */<a name="line.19"></a> |
| <span class="sourceLineNo">020</span>package org.apache.mina.filter.codec.textline;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.nio.ByteBuffer;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.nio.CharBuffer;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import java.nio.charset.CharacterCodingException;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.nio.charset.Charset;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.nio.charset.CharsetDecoder;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span><a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.mina.core.buffer.BufferDataException;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.mina.core.buffer.IoBuffer;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.mina.core.session.AttributeKey;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.mina.core.session.IoSession;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.mina.filter.codec.ProtocolDecoder;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.mina.filter.codec.ProtocolDecoderException;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.mina.filter.codec.ProtocolDecoderOutput;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.mina.filter.codec.RecoverableProtocolDecoderException;<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> * A {@link ProtocolDecoder} which decodes a text line into a string.<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> *<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * @author <a href="http://mina.apache.org">Apache MINA Project</a><a name="line.40"></a> |
| <span class="sourceLineNo">041</span> */<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>public class TextLineDecoder implements ProtocolDecoder {<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> private final AttributeKey CONTEXT = new AttributeKey(getClass(), "context");<a name="line.43"></a> |
| <span class="sourceLineNo">044</span><a name="line.44"></a> |
| <span class="sourceLineNo">045</span> private final Charset charset;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span><a name="line.46"></a> |
| <span class="sourceLineNo">047</span> /** The delimiter used to determinate when a line has been fully decoded */<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> private final LineDelimiter delimiter;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span><a name="line.49"></a> |
| <span class="sourceLineNo">050</span> /** An IoBuffer containing the delimiter */<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> private IoBuffer delimBuf;<a name="line.51"></a> |
| <span class="sourceLineNo">052</span><a name="line.52"></a> |
| <span class="sourceLineNo">053</span> /** The default maximum Line length. Default to 1024. */<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> private int maxLineLength = 1024;<a name="line.54"></a> |
| <span class="sourceLineNo">055</span><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> /** The default maximum buffer length. Default to 128 chars. */<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> private int bufferLength = 128;<a name="line.57"></a> |
| <span class="sourceLineNo">058</span><a name="line.58"></a> |
| <span class="sourceLineNo">059</span> /**<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * Creates a new instance with the current default {@link Charset}<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * and {@link LineDelimiter#AUTO} delimiter.<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> */<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> public TextLineDecoder() {<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> this(LineDelimiter.AUTO);<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> }<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 a new instance with the current default {@link Charset}<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> * and the specified <tt>delimiter</tt>.<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> * <a name="line.70"></a> |
| <span class="sourceLineNo">071</span> * @param delimiter The line delimiter to use<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> */<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> public TextLineDecoder(String delimiter) {<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> this(new LineDelimiter(delimiter));<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> * Creates a new instance with the current default {@link Charset}<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> * and the specified <tt>delimiter</tt>.<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> * <a name="line.80"></a> |
| <span class="sourceLineNo">081</span> * @param delimiter The line delimiter to use<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> */<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> public TextLineDecoder(LineDelimiter delimiter) {<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> this(Charset.defaultCharset(), delimiter);<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> /**<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> * Creates a new instance with the spcified <tt>charset</tt><a name="line.88"></a> |
| <span class="sourceLineNo">089</span> * and {@link LineDelimiter#AUTO} delimiter.<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> * <a name="line.90"></a> |
| <span class="sourceLineNo">091</span> * @param charset The {@link Charset} to use<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> */<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> public TextLineDecoder(Charset charset) {<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> this(charset, LineDelimiter.AUTO);<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> /**<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> * Creates a new instance with the spcified <tt>charset</tt><a name="line.98"></a> |
| <span class="sourceLineNo">099</span> * and the specified <tt>delimiter</tt>.<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> * <a name="line.100"></a> |
| <span class="sourceLineNo">101</span> * @param charset The {@link Charset} to use<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> * @param delimiter The line delimiter to use<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> */<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> public TextLineDecoder(Charset charset, String delimiter) {<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> this(charset, new LineDelimiter(delimiter));<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> }<a name="line.106"></a> |
| <span class="sourceLineNo">107</span><a name="line.107"></a> |
| <span class="sourceLineNo">108</span> /**<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> * Creates a new instance with the specified <tt>charset</tt><a name="line.109"></a> |
| <span class="sourceLineNo">110</span> * and the specified <tt>delimiter</tt>.<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> * <a name="line.111"></a> |
| <span class="sourceLineNo">112</span> * @param charset The {@link Charset} to use<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> * @param delimiter The line delimiter to use<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> */<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> public TextLineDecoder(Charset charset, LineDelimiter delimiter) {<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> if (charset == null) {<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> throw new IllegalArgumentException("charset parameter shuld not be null");<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> }<a name="line.118"></a> |
| <span class="sourceLineNo">119</span><a name="line.119"></a> |
| <span class="sourceLineNo">120</span> if (delimiter == null) {<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> throw new IllegalArgumentException("delimiter parameter should not be null");<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> this.charset = charset;<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> this.delimiter = delimiter;<a name="line.125"></a> |
| <span class="sourceLineNo">126</span><a name="line.126"></a> |
| <span class="sourceLineNo">127</span> // Convert delimiter to ByteBuffer if not done yet.<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> if (delimBuf == null) {<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> IoBuffer tmp = IoBuffer.allocate(2).setAutoExpand(true);<a name="line.129"></a> |
| <span class="sourceLineNo">130</span><a name="line.130"></a> |
| <span class="sourceLineNo">131</span> try {<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> tmp.putString(delimiter.getValue(), charset.newEncoder());<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> } catch (CharacterCodingException cce) {<a name="line.133"></a> |
| <span class="sourceLineNo">134</span><a name="line.134"></a> |
| <span class="sourceLineNo">135</span> }<a name="line.135"></a> |
| <span class="sourceLineNo">136</span><a name="line.136"></a> |
| <span class="sourceLineNo">137</span> tmp.flip();<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> delimBuf = tmp;<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> /**<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> * @return the allowed maximum size of the line to be decoded.<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> * If the size of the line to be decoded exceeds this value, the<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> * decoder will throw a {@link BufferDataException}. The default<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> * value is <tt>1024</tt> (1KB).<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> */<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> public int getMaxLineLength() {<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> return maxLineLength;<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> }<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> * Sets the allowed maximum size of the line to be decoded.<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> * If the size of the line to be decoded exceeds this value, the<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> * decoder will throw a {@link BufferDataException}. The default<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> * value is <tt>1024</tt> (1KB).<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> * <a name="line.157"></a> |
| <span class="sourceLineNo">158</span> * @param maxLineLength The maximum line length<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> */<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> public void setMaxLineLength(int maxLineLength) {<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> if (maxLineLength <= 0) {<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> throw new IllegalArgumentException("maxLineLength (" + maxLineLength + ") should be a positive value");<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> }<a name="line.163"></a> |
| <span class="sourceLineNo">164</span><a name="line.164"></a> |
| <span class="sourceLineNo">165</span> this.maxLineLength = maxLineLength;<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> }<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> * Sets the default buffer size. This buffer is used in the Context<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> * to store the decoded line.<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> *<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> * @param bufferLength The default bufer size<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> */<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> public void setBufferLength(int bufferLength) {<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> if (bufferLength <= 0) {<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> throw new IllegalArgumentException("bufferLength (" + maxLineLength + ") should be a positive value");<a name="line.176"></a> |
| <span class="sourceLineNo">177</span><a name="line.177"></a> |
| <span class="sourceLineNo">178</span> }<a name="line.178"></a> |
| <span class="sourceLineNo">179</span><a name="line.179"></a> |
| <span class="sourceLineNo">180</span> this.bufferLength = bufferLength;<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> }<a name="line.181"></a> |
| <span class="sourceLineNo">182</span><a name="line.182"></a> |
| <span class="sourceLineNo">183</span> /**<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> * @return the allowed buffer size used to store the decoded line<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> * in the Context instance.<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> */<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> public int getBufferLength() {<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> return bufferLength;<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> }<a name="line.189"></a> |
| <span class="sourceLineNo">190</span><a name="line.190"></a> |
| <span class="sourceLineNo">191</span> /**<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> * {@inheritDoc}<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> */<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> public void decode(IoSession session, IoBuffer in, ProtocolDecoderOutput out) throws Exception {<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> Context ctx = getContext(session);<a name="line.195"></a> |
| <span class="sourceLineNo">196</span><a name="line.196"></a> |
| <span class="sourceLineNo">197</span> if (LineDelimiter.AUTO.equals(delimiter)) {<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> decodeAuto(ctx, session, in, out);<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> } else {<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> decodeNormal(ctx, session, in, out);<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> }<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> }<a name="line.202"></a> |
| <span class="sourceLineNo">203</span><a name="line.203"></a> |
| <span class="sourceLineNo">204</span> /**<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> * @return the context for this session<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> * <a name="line.206"></a> |
| <span class="sourceLineNo">207</span> * @param session The session for which we want the context<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> */<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> private Context getContext(IoSession session) {<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> Context ctx;<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> ctx = (Context) session.getAttribute(CONTEXT);<a name="line.211"></a> |
| <span class="sourceLineNo">212</span><a name="line.212"></a> |
| <span class="sourceLineNo">213</span> if (ctx == null) {<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> ctx = new Context(bufferLength);<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> session.setAttribute(CONTEXT, ctx);<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> }<a name="line.216"></a> |
| <span class="sourceLineNo">217</span><a name="line.217"></a> |
| <span class="sourceLineNo">218</span> return ctx;<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> |
| <span class="sourceLineNo">222</span> * {@inheritDoc}<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> */<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> public void finishDecode(IoSession session, ProtocolDecoderOutput out) throws Exception {<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> // Do nothing<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> }<a name="line.226"></a> |
| <span class="sourceLineNo">227</span><a name="line.227"></a> |
| <span class="sourceLineNo">228</span> /**<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> * {@inheritDoc}<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> */<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> public void dispose(IoSession session) throws Exception {<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> Context ctx = (Context) session.getAttribute(CONTEXT);<a name="line.232"></a> |
| <span class="sourceLineNo">233</span><a name="line.233"></a> |
| <span class="sourceLineNo">234</span> if (ctx != null) {<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> session.removeAttribute(CONTEXT);<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> }<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> }<a name="line.237"></a> |
| <span class="sourceLineNo">238</span><a name="line.238"></a> |
| <span class="sourceLineNo">239</span> /**<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> * Decode a line using the default delimiter on the current system<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> */<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> private void decodeAuto(Context ctx, IoSession session, IoBuffer in, ProtocolDecoderOutput out)<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> throws CharacterCodingException, ProtocolDecoderException {<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> int matchCount = ctx.getMatchCount();<a name="line.244"></a> |
| <span class="sourceLineNo">245</span><a name="line.245"></a> |
| <span class="sourceLineNo">246</span> // Try to find a match<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> int oldPos = in.position();<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> int oldLimit = in.limit();<a name="line.248"></a> |
| <span class="sourceLineNo">249</span><a name="line.249"></a> |
| <span class="sourceLineNo">250</span> while (in.hasRemaining()) {<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> byte b = in.get();<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> boolean matched = false;<a name="line.252"></a> |
| <span class="sourceLineNo">253</span><a name="line.253"></a> |
| <span class="sourceLineNo">254</span> switch (b) {<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> case '\r':<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> // Might be Mac, but we don't auto-detect Mac EOL<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> // to avoid confusion.<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> matchCount++;<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> break;<a name="line.259"></a> |
| <span class="sourceLineNo">260</span><a name="line.260"></a> |
| <span class="sourceLineNo">261</span> case '\n':<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> // UNIX<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> matchCount++;<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> matched = true;<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> break;<a name="line.265"></a> |
| <span class="sourceLineNo">266</span><a name="line.266"></a> |
| <span class="sourceLineNo">267</span> default:<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> matchCount = 0;<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> }<a name="line.269"></a> |
| <span class="sourceLineNo">270</span><a name="line.270"></a> |
| <span class="sourceLineNo">271</span> if (matched) {<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> // Found a match.<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> int pos = in.position();<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> in.limit(pos);<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> in.position(oldPos);<a name="line.275"></a> |
| <span class="sourceLineNo">276</span><a name="line.276"></a> |
| <span class="sourceLineNo">277</span> ctx.append(in);<a name="line.277"></a> |
| <span class="sourceLineNo">278</span><a name="line.278"></a> |
| <span class="sourceLineNo">279</span> in.limit(oldLimit);<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> in.position(pos);<a name="line.280"></a> |
| <span class="sourceLineNo">281</span><a name="line.281"></a> |
| <span class="sourceLineNo">282</span> if (ctx.getOverflowPosition() == 0) {<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> IoBuffer buf = ctx.getBuffer();<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> buf.flip();<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> buf.limit(buf.limit() - matchCount);<a name="line.285"></a> |
| <span class="sourceLineNo">286</span><a name="line.286"></a> |
| <span class="sourceLineNo">287</span> try {<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> byte[] data = new byte[buf.limit()];<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> buf.get(data);<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> CharsetDecoder decoder = ctx.getDecoder();<a name="line.290"></a> |
| <span class="sourceLineNo">291</span><a name="line.291"></a> |
| <span class="sourceLineNo">292</span> CharBuffer buffer = decoder.decode(ByteBuffer.wrap(data));<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> String str = buffer.toString();<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> writeText(session, str, out);<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> } finally {<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> buf.clear();<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> }<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> } else {<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> int overflowPosition = ctx.getOverflowPosition();<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> ctx.reset();<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> throw new RecoverableProtocolDecoderException("Line is too long: " + overflowPosition);<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> }<a name="line.302"></a> |
| <span class="sourceLineNo">303</span><a name="line.303"></a> |
| <span class="sourceLineNo">304</span> oldPos = pos;<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> matchCount = 0;<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><a name="line.308"></a> |
| <span class="sourceLineNo">309</span> // Put remainder to buf.<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> in.position(oldPos);<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> ctx.append(in);<a name="line.311"></a> |
| <span class="sourceLineNo">312</span><a name="line.312"></a> |
| <span class="sourceLineNo">313</span> ctx.setMatchCount(matchCount);<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> }<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> * Decode a line using the delimiter defined by the caller<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> */<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> private void decodeNormal(Context ctx, IoSession session, IoBuffer in, ProtocolDecoderOutput out)<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> throws CharacterCodingException, ProtocolDecoderException {<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> int matchCount = ctx.getMatchCount();<a name="line.321"></a> |
| <span class="sourceLineNo">322</span><a name="line.322"></a> |
| <span class="sourceLineNo">323</span> // Try to find a match<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> int oldPos = in.position();<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> int oldLimit = in.limit();<a name="line.325"></a> |
| <span class="sourceLineNo">326</span><a name="line.326"></a> |
| <span class="sourceLineNo">327</span> while (in.hasRemaining()) {<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> byte b = in.get();<a name="line.328"></a> |
| <span class="sourceLineNo">329</span><a name="line.329"></a> |
| <span class="sourceLineNo">330</span> if (delimBuf.get(matchCount) == b) {<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> matchCount++;<a name="line.331"></a> |
| <span class="sourceLineNo">332</span><a name="line.332"></a> |
| <span class="sourceLineNo">333</span> if (matchCount == delimBuf.limit()) {<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> // Found a match.<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> int pos = in.position();<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> in.limit(pos);<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> in.position(oldPos);<a name="line.337"></a> |
| <span class="sourceLineNo">338</span><a name="line.338"></a> |
| <span class="sourceLineNo">339</span> ctx.append(in);<a name="line.339"></a> |
| <span class="sourceLineNo">340</span><a name="line.340"></a> |
| <span class="sourceLineNo">341</span> in.limit(oldLimit);<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> in.position(pos);<a name="line.342"></a> |
| <span class="sourceLineNo">343</span><a name="line.343"></a> |
| <span class="sourceLineNo">344</span> if (ctx.getOverflowPosition() == 0) {<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> IoBuffer buf = ctx.getBuffer();<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> buf.flip();<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> buf.limit(buf.limit() - matchCount);<a name="line.347"></a> |
| <span class="sourceLineNo">348</span><a name="line.348"></a> |
| <span class="sourceLineNo">349</span> try {<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> writeText(session, buf.getString(ctx.getDecoder()), out);<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> } finally {<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> buf.clear();<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> }<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> } else {<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> int overflowPosition = ctx.getOverflowPosition();<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> ctx.reset();<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> throw new RecoverableProtocolDecoderException("Line is too long: " + overflowPosition);<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> }<a name="line.358"></a> |
| <span class="sourceLineNo">359</span><a name="line.359"></a> |
| <span class="sourceLineNo">360</span> oldPos = pos;<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> matchCount = 0;<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> }<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> } else {<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> // fix for DIRMINA-506 & DIRMINA-536<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> in.position(Math.max(0, in.position() - matchCount));<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> matchCount = 0;<a name="line.366"></a> |
| <span class="sourceLineNo">367</span> }<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> // Put remainder to buf.<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> in.position(oldPos);<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> ctx.append(in);<a name="line.372"></a> |
| <span class="sourceLineNo">373</span><a name="line.373"></a> |
| <span class="sourceLineNo">374</span> ctx.setMatchCount(matchCount);<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> }<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> * By default, this method propagates the decoded line of text to<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> * {@code ProtocolDecoderOutput#write(Object)}. You may override this method to modify<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> * the default behavior.<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> *<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> * @param session the {@code IoSession} the received data.<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> * @param text the decoded text<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> * @param out the upstream {@code ProtocolDecoderOutput}.<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> */<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> protected void writeText(IoSession session, String text, ProtocolDecoderOutput out) {<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> out.write(text);<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> }<a name="line.388"></a> |
| <span class="sourceLineNo">389</span><a name="line.389"></a> |
| <span class="sourceLineNo">390</span> /**<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> * A Context used during the decoding of a lin. It stores the decoder,<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> * the temporary buffer containing the decoded line, and other status flags.<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> *<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a><a name="line.394"></a> |
| <span class="sourceLineNo">395</span> * @version $Rev$, $Date$<a name="line.395"></a> |
| <span class="sourceLineNo">396</span> */<a name="line.396"></a> |
| <span class="sourceLineNo">397</span> private class Context {<a name="line.397"></a> |
| <span class="sourceLineNo">398</span> /** The decoder */<a name="line.398"></a> |
| <span class="sourceLineNo">399</span> private final CharsetDecoder decoder;<a name="line.399"></a> |
| <span class="sourceLineNo">400</span><a name="line.400"></a> |
| <span class="sourceLineNo">401</span> /** The temporary buffer containing the decoded line */<a name="line.401"></a> |
| <span class="sourceLineNo">402</span> private final IoBuffer buf;<a name="line.402"></a> |
| <span class="sourceLineNo">403</span><a name="line.403"></a> |
| <span class="sourceLineNo">404</span> /** The number of lines found so far */<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> private int matchCount = 0;<a name="line.405"></a> |
| <span class="sourceLineNo">406</span><a name="line.406"></a> |
| <span class="sourceLineNo">407</span> /** A counter to signal that the line is too long */<a name="line.407"></a> |
| <span class="sourceLineNo">408</span> private int overflowPosition = 0;<a name="line.408"></a> |
| <span class="sourceLineNo">409</span><a name="line.409"></a> |
| <span class="sourceLineNo">410</span> /** Create a new Context object with a default buffer */<a name="line.410"></a> |
| <span class="sourceLineNo">411</span> private Context(int bufferLength) {<a name="line.411"></a> |
| <span class="sourceLineNo">412</span> decoder = charset.newDecoder();<a name="line.412"></a> |
| <span class="sourceLineNo">413</span> buf = IoBuffer.allocate(bufferLength).setAutoExpand(true);<a name="line.413"></a> |
| <span class="sourceLineNo">414</span> }<a name="line.414"></a> |
| <span class="sourceLineNo">415</span><a name="line.415"></a> |
| <span class="sourceLineNo">416</span> public CharsetDecoder getDecoder() {<a name="line.416"></a> |
| <span class="sourceLineNo">417</span> return decoder;<a name="line.417"></a> |
| <span class="sourceLineNo">418</span> }<a name="line.418"></a> |
| <span class="sourceLineNo">419</span><a name="line.419"></a> |
| <span class="sourceLineNo">420</span> public IoBuffer getBuffer() {<a name="line.420"></a> |
| <span class="sourceLineNo">421</span> return buf;<a name="line.421"></a> |
| <span class="sourceLineNo">422</span> }<a name="line.422"></a> |
| <span class="sourceLineNo">423</span><a name="line.423"></a> |
| <span class="sourceLineNo">424</span> public int getOverflowPosition() {<a name="line.424"></a> |
| <span class="sourceLineNo">425</span> return overflowPosition;<a name="line.425"></a> |
| <span class="sourceLineNo">426</span> }<a name="line.426"></a> |
| <span class="sourceLineNo">427</span><a name="line.427"></a> |
| <span class="sourceLineNo">428</span> public int getMatchCount() {<a name="line.428"></a> |
| <span class="sourceLineNo">429</span> return matchCount;<a name="line.429"></a> |
| <span class="sourceLineNo">430</span> }<a name="line.430"></a> |
| <span class="sourceLineNo">431</span><a name="line.431"></a> |
| <span class="sourceLineNo">432</span> public void setMatchCount(int matchCount) {<a name="line.432"></a> |
| <span class="sourceLineNo">433</span> this.matchCount = matchCount;<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> public void reset() {<a name="line.436"></a> |
| <span class="sourceLineNo">437</span> overflowPosition = 0;<a name="line.437"></a> |
| <span class="sourceLineNo">438</span> matchCount = 0;<a name="line.438"></a> |
| <span class="sourceLineNo">439</span> decoder.reset();<a name="line.439"></a> |
| <span class="sourceLineNo">440</span> }<a name="line.440"></a> |
| <span class="sourceLineNo">441</span><a name="line.441"></a> |
| <span class="sourceLineNo">442</span> public void append(IoBuffer in) {<a name="line.442"></a> |
| <span class="sourceLineNo">443</span> if (overflowPosition != 0) {<a name="line.443"></a> |
| <span class="sourceLineNo">444</span> discard(in);<a name="line.444"></a> |
| <span class="sourceLineNo">445</span> } else if (buf.position() > maxLineLength - in.remaining()) {<a name="line.445"></a> |
| <span class="sourceLineNo">446</span> overflowPosition = buf.position();<a name="line.446"></a> |
| <span class="sourceLineNo">447</span> buf.clear();<a name="line.447"></a> |
| <span class="sourceLineNo">448</span> discard(in);<a name="line.448"></a> |
| <span class="sourceLineNo">449</span> } else {<a name="line.449"></a> |
| <span class="sourceLineNo">450</span> getBuffer().put(in);<a name="line.450"></a> |
| <span class="sourceLineNo">451</span> }<a name="line.451"></a> |
| <span class="sourceLineNo">452</span> }<a name="line.452"></a> |
| <span class="sourceLineNo">453</span><a name="line.453"></a> |
| <span class="sourceLineNo">454</span> private void discard(IoBuffer in) {<a name="line.454"></a> |
| <span class="sourceLineNo">455</span> if (Integer.MAX_VALUE - in.remaining() < overflowPosition) {<a name="line.455"></a> |
| <span class="sourceLineNo">456</span> overflowPosition = Integer.MAX_VALUE;<a name="line.456"></a> |
| <span class="sourceLineNo">457</span> } else {<a name="line.457"></a> |
| <span class="sourceLineNo">458</span> overflowPosition += in.remaining();<a name="line.458"></a> |
| <span class="sourceLineNo">459</span> }<a name="line.459"></a> |
| <span class="sourceLineNo">460</span><a name="line.460"></a> |
| <span class="sourceLineNo">461</span> in.position(in.limit());<a name="line.461"></a> |
| <span class="sourceLineNo">462</span> }<a name="line.462"></a> |
| <span class="sourceLineNo">463</span> }<a name="line.463"></a> |
| <span class="sourceLineNo">464</span>}<a name="line.464"></a> |
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| </div> |
| </body> |
| </html> |
