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| <FONT color="green">001</FONT> /*<a name="line.1"></a> |
| <FONT color="green">002</FONT> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <FONT color="green">003</FONT> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <FONT color="green">004</FONT> * distributed with this work for additional information<a name="line.4"></a> |
| <FONT color="green">005</FONT> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <FONT color="green">006</FONT> * to you under the Apache License, Version 2.0 (the "License");<a name="line.6"></a> |
| <FONT color="green">007</FONT> * you may not use this file except in compliance with the License.<a name="line.7"></a> |
| <FONT color="green">008</FONT> * You may obtain a copy of the License at<a name="line.8"></a> |
| <FONT color="green">009</FONT> *<a name="line.9"></a> |
| <FONT color="green">010</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <FONT color="green">011</FONT> *<a name="line.11"></a> |
| <FONT color="green">012</FONT> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a> |
| <FONT color="green">013</FONT> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a> |
| <FONT color="green">014</FONT> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a> |
| <FONT color="green">015</FONT> * See the License for the specific language governing permissions and<a name="line.15"></a> |
| <FONT color="green">016</FONT> * limitations under the License.<a name="line.16"></a> |
| <FONT color="green">017</FONT> */<a name="line.17"></a> |
| <FONT color="green">018</FONT> /*<a name="line.18"></a> |
| <FONT color="green">019</FONT> * $Id: SerializerTraceWriter.java 468654 2006-10-28 07:09:23Z minchau $<a name="line.19"></a> |
| <FONT color="green">020</FONT> */<a name="line.20"></a> |
| <FONT color="green">021</FONT> package org.apache.xml.serializer;<a name="line.21"></a> |
| <FONT color="green">022</FONT> <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.OutputStream;<a name="line.24"></a> |
| <FONT color="green">025</FONT> import java.io.Writer;<a name="line.25"></a> |
| <FONT color="green">026</FONT> <a name="line.26"></a> |
| <FONT color="green">027</FONT> /**<a name="line.27"></a> |
| <FONT color="green">028</FONT> * This class wraps the real writer, it only purpose is to send<a name="line.28"></a> |
| <FONT color="green">029</FONT> * CHARACTERTOSTREAM events to the trace listener. <a name="line.29"></a> |
| <FONT color="green">030</FONT> * Each method immediately sends the call to the wrapped writer unchanged, but<a name="line.30"></a> |
| <FONT color="green">031</FONT> * in addition it collects characters to be issued to a trace listener.<a name="line.31"></a> |
| <FONT color="green">032</FONT> * <a name="line.32"></a> |
| <FONT color="green">033</FONT> * In this way the trace<a name="line.33"></a> |
| <FONT color="green">034</FONT> * listener knows what characters have been written to the output Writer.<a name="line.34"></a> |
| <FONT color="green">035</FONT> * <a name="line.35"></a> |
| <FONT color="green">036</FONT> * There may still be differences in what the trace events say is going to the<a name="line.36"></a> |
| <FONT color="green">037</FONT> * output writer and what is really going there. These differences will be due<a name="line.37"></a> |
| <FONT color="green">038</FONT> * to the fact that this class is UTF-8 encoding before emiting the trace event<a name="line.38"></a> |
| <FONT color="green">039</FONT> * and the underlying writer may not be UTF-8 encoding. There may also be<a name="line.39"></a> |
| <FONT color="green">040</FONT> * encoding differences. So the main pupose of this class is to provide a<a name="line.40"></a> |
| <FONT color="green">041</FONT> * resonable facsimile of the true output.<a name="line.41"></a> |
| <FONT color="green">042</FONT> * <a name="line.42"></a> |
| <FONT color="green">043</FONT> * @xsl.usage internal<a name="line.43"></a> |
| <FONT color="green">044</FONT> */<a name="line.44"></a> |
| <FONT color="green">045</FONT> final class SerializerTraceWriter extends Writer implements WriterChain<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> /** The real writer to immediately write to.<a name="line.48"></a> |
| <FONT color="green">049</FONT> * This reference may be null, in which case nothing is written out, but<a name="line.49"></a> |
| <FONT color="green">050</FONT> * only the trace events are fired for output.<a name="line.50"></a> |
| <FONT color="green">051</FONT> */<a name="line.51"></a> |
| <FONT color="green">052</FONT> private final java.io.Writer m_writer;<a name="line.52"></a> |
| <FONT color="green">053</FONT> <a name="line.53"></a> |
| <FONT color="green">054</FONT> /** The tracer to send events to */<a name="line.54"></a> |
| <FONT color="green">055</FONT> private final SerializerTrace m_tracer;<a name="line.55"></a> |
| <FONT color="green">056</FONT> <a name="line.56"></a> |
| <FONT color="green">057</FONT> /** The size of the internal buffer, just to keep too many<a name="line.57"></a> |
| <FONT color="green">058</FONT> * events from being sent to the tracer<a name="line.58"></a> |
| <FONT color="green">059</FONT> */<a name="line.59"></a> |
| <FONT color="green">060</FONT> private int buf_length;<a name="line.60"></a> |
| <FONT color="green">061</FONT> <a name="line.61"></a> |
| <FONT color="green">062</FONT> /**<a name="line.62"></a> |
| <FONT color="green">063</FONT> * Internal buffer to collect the characters to go to the trace listener.<a name="line.63"></a> |
| <FONT color="green">064</FONT> * <a name="line.64"></a> |
| <FONT color="green">065</FONT> */<a name="line.65"></a> |
| <FONT color="green">066</FONT> private byte buf[];<a name="line.66"></a> |
| <FONT color="green">067</FONT> <a name="line.67"></a> |
| <FONT color="green">068</FONT> /**<a name="line.68"></a> |
| <FONT color="green">069</FONT> * How many bytes have been collected and still need to go to trace<a name="line.69"></a> |
| <FONT color="green">070</FONT> * listener.<a name="line.70"></a> |
| <FONT color="green">071</FONT> */<a name="line.71"></a> |
| <FONT color="green">072</FONT> private int count;<a name="line.72"></a> |
| <FONT color="green">073</FONT> <a name="line.73"></a> |
| <FONT color="green">074</FONT> /**<a name="line.74"></a> |
| <FONT color="green">075</FONT> * Creates or replaces the internal buffer, and makes sure it has a few<a name="line.75"></a> |
| <FONT color="green">076</FONT> * extra bytes slight overflow of the last UTF8 encoded character.<a name="line.76"></a> |
| <FONT color="green">077</FONT> * @param size<a name="line.77"></a> |
| <FONT color="green">078</FONT> */<a name="line.78"></a> |
| <FONT color="green">079</FONT> private void setBufferSize(int size)<a name="line.79"></a> |
| <FONT color="green">080</FONT> {<a name="line.80"></a> |
| <FONT color="green">081</FONT> buf = new byte[size + 3];<a name="line.81"></a> |
| <FONT color="green">082</FONT> buf_length = size;<a name="line.82"></a> |
| <FONT color="green">083</FONT> count = 0;<a name="line.83"></a> |
| <FONT color="green">084</FONT> }<a name="line.84"></a> |
| <FONT color="green">085</FONT> <a name="line.85"></a> |
| <FONT color="green">086</FONT> /**<a name="line.86"></a> |
| <FONT color="green">087</FONT> * Constructor.<a name="line.87"></a> |
| <FONT color="green">088</FONT> * If the writer passed in is null, then this SerializerTraceWriter will<a name="line.88"></a> |
| <FONT color="green">089</FONT> * only signal trace events of what would have been written to that writer.<a name="line.89"></a> |
| <FONT color="green">090</FONT> * If the writer passed in is not null then the trace events will mirror<a name="line.90"></a> |
| <FONT color="green">091</FONT> * what is going to that writer. In this way tools, such as a debugger, can<a name="line.91"></a> |
| <FONT color="green">092</FONT> * gather information on what is being written out.<a name="line.92"></a> |
| <FONT color="green">093</FONT> * <a name="line.93"></a> |
| <FONT color="green">094</FONT> * @param out the Writer to write to (possibly null)<a name="line.94"></a> |
| <FONT color="green">095</FONT> * @param tracer the tracer to inform that characters are being written<a name="line.95"></a> |
| <FONT color="green">096</FONT> */<a name="line.96"></a> |
| <FONT color="green">097</FONT> public SerializerTraceWriter(Writer out, SerializerTrace tracer)<a name="line.97"></a> |
| <FONT color="green">098</FONT> {<a name="line.98"></a> |
| <FONT color="green">099</FONT> m_writer = out;<a name="line.99"></a> |
| <FONT color="green">100</FONT> m_tracer = tracer;<a name="line.100"></a> |
| <FONT color="green">101</FONT> setBufferSize(1024);<a name="line.101"></a> |
| <FONT color="green">102</FONT> }<a name="line.102"></a> |
| <FONT color="green">103</FONT> <a name="line.103"></a> |
| <FONT color="green">104</FONT> /**<a name="line.104"></a> |
| <FONT color="green">105</FONT> * Flush out the collected characters by sending them to the trace<a name="line.105"></a> |
| <FONT color="green">106</FONT> * listener. These characters are never written to the real writer<a name="line.106"></a> |
| <FONT color="green">107</FONT> * (m_writer) because that has already happened with every method<a name="line.107"></a> |
| <FONT color="green">108</FONT> * call. This method simple informs the listener of what has already<a name="line.108"></a> |
| <FONT color="green">109</FONT> * happened.<a name="line.109"></a> |
| <FONT color="green">110</FONT> * @throws IOException<a name="line.110"></a> |
| <FONT color="green">111</FONT> */<a name="line.111"></a> |
| <FONT color="green">112</FONT> private void flushBuffer() throws IOException<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> // Just for tracing purposes<a name="line.115"></a> |
| <FONT color="green">116</FONT> if (count > 0)<a name="line.116"></a> |
| <FONT color="green">117</FONT> {<a name="line.117"></a> |
| <FONT color="green">118</FONT> char[] chars = new char[count];<a name="line.118"></a> |
| <FONT color="green">119</FONT> for(int i=0; i<count; i++)<a name="line.119"></a> |
| <FONT color="green">120</FONT> chars[i] = (char) buf[i];<a name="line.120"></a> |
| <FONT color="green">121</FONT> <a name="line.121"></a> |
| <FONT color="green">122</FONT> if (m_tracer != null)<a name="line.122"></a> |
| <FONT color="green">123</FONT> m_tracer.fireGenerateEvent(<a name="line.123"></a> |
| <FONT color="green">124</FONT> SerializerTrace.EVENTTYPE_OUTPUT_CHARACTERS,<a name="line.124"></a> |
| <FONT color="green">125</FONT> chars,<a name="line.125"></a> |
| <FONT color="green">126</FONT> 0,<a name="line.126"></a> |
| <FONT color="green">127</FONT> chars.length);<a name="line.127"></a> |
| <FONT color="green">128</FONT> <a name="line.128"></a> |
| <FONT color="green">129</FONT> count = 0;<a name="line.129"></a> |
| <FONT color="green">130</FONT> }<a name="line.130"></a> |
| <FONT color="green">131</FONT> }<a name="line.131"></a> |
| <FONT color="green">132</FONT> <a name="line.132"></a> |
| <FONT color="green">133</FONT> /**<a name="line.133"></a> |
| <FONT color="green">134</FONT> * Flush the internal buffer and flush the Writer<a name="line.134"></a> |
| <FONT color="green">135</FONT> * @see java.io.Writer#flush()<a name="line.135"></a> |
| <FONT color="green">136</FONT> */<a name="line.136"></a> |
| <FONT color="green">137</FONT> public void flush() throws java.io.IOException<a name="line.137"></a> |
| <FONT color="green">138</FONT> {<a name="line.138"></a> |
| <FONT color="green">139</FONT> // send to the real writer<a name="line.139"></a> |
| <FONT color="green">140</FONT> if (m_writer != null)<a name="line.140"></a> |
| <FONT color="green">141</FONT> m_writer.flush();<a name="line.141"></a> |
| <FONT color="green">142</FONT> <a name="line.142"></a> |
| <FONT color="green">143</FONT> // from here on just for tracing purposes<a name="line.143"></a> |
| <FONT color="green">144</FONT> flushBuffer();<a name="line.144"></a> |
| <FONT color="green">145</FONT> }<a name="line.145"></a> |
| <FONT color="green">146</FONT> <a name="line.146"></a> |
| <FONT color="green">147</FONT> /**<a name="line.147"></a> |
| <FONT color="green">148</FONT> * Flush the internal buffer and close the Writer<a name="line.148"></a> |
| <FONT color="green">149</FONT> * @see java.io.Writer#close()<a name="line.149"></a> |
| <FONT color="green">150</FONT> */<a name="line.150"></a> |
| <FONT color="green">151</FONT> public void close() throws java.io.IOException<a name="line.151"></a> |
| <FONT color="green">152</FONT> {<a name="line.152"></a> |
| <FONT color="green">153</FONT> // send to the real writer<a name="line.153"></a> |
| <FONT color="green">154</FONT> if (m_writer != null) <a name="line.154"></a> |
| <FONT color="green">155</FONT> m_writer.close();<a name="line.155"></a> |
| <FONT color="green">156</FONT> <a name="line.156"></a> |
| <FONT color="green">157</FONT> // from here on just for tracing purposes<a name="line.157"></a> |
| <FONT color="green">158</FONT> flushBuffer();<a name="line.158"></a> |
| <FONT color="green">159</FONT> }<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> * Write a single character. The character to be written is contained in<a name="line.163"></a> |
| <FONT color="green">164</FONT> * the 16 low-order bits of the given integer value; the 16 high-order bits<a name="line.164"></a> |
| <FONT color="green">165</FONT> * are ignored.<a name="line.165"></a> |
| <FONT color="green">166</FONT> *<a name="line.166"></a> |
| <FONT color="green">167</FONT> * <p> Subclasses that intend to support efficient single-character output<a name="line.167"></a> |
| <FONT color="green">168</FONT> * should override this method.<a name="line.168"></a> |
| <FONT color="green">169</FONT> *<a name="line.169"></a> |
| <FONT color="green">170</FONT> * @param c int specifying a character to be written.<a name="line.170"></a> |
| <FONT color="green">171</FONT> * @exception IOException If an I/O error occurs<a name="line.171"></a> |
| <FONT color="green">172</FONT> */<a name="line.172"></a> |
| <FONT color="green">173</FONT> public void write(final int c) throws IOException<a name="line.173"></a> |
| <FONT color="green">174</FONT> {<a name="line.174"></a> |
| <FONT color="green">175</FONT> // send to the real writer<a name="line.175"></a> |
| <FONT color="green">176</FONT> if (m_writer != null)<a name="line.176"></a> |
| <FONT color="green">177</FONT> m_writer.write(c);<a name="line.177"></a> |
| <FONT color="green">178</FONT> <a name="line.178"></a> |
| <FONT color="green">179</FONT> // ---------- from here on just collect for tracing purposes<a name="line.179"></a> |
| <FONT color="green">180</FONT> <a name="line.180"></a> |
| <FONT color="green">181</FONT> /* If we are close to the end of the buffer then flush it.<a name="line.181"></a> |
| <FONT color="green">182</FONT> * Remember the buffer can hold a few more characters than buf_length<a name="line.182"></a> |
| <FONT color="green">183</FONT> */<a name="line.183"></a> |
| <FONT color="green">184</FONT> if (count >= buf_length)<a name="line.184"></a> |
| <FONT color="green">185</FONT> flushBuffer();<a name="line.185"></a> |
| <FONT color="green">186</FONT> <a name="line.186"></a> |
| <FONT color="green">187</FONT> if (c < 0x80)<a name="line.187"></a> |
| <FONT color="green">188</FONT> {<a name="line.188"></a> |
| <FONT color="green">189</FONT> buf[count++] = (byte) (c);<a name="line.189"></a> |
| <FONT color="green">190</FONT> }<a name="line.190"></a> |
| <FONT color="green">191</FONT> else if (c < 0x800)<a name="line.191"></a> |
| <FONT color="green">192</FONT> {<a name="line.192"></a> |
| <FONT color="green">193</FONT> buf[count++] = (byte) (0xc0 + (c >> 6));<a name="line.193"></a> |
| <FONT color="green">194</FONT> buf[count++] = (byte) (0x80 + (c & 0x3f));<a name="line.194"></a> |
| <FONT color="green">195</FONT> }<a name="line.195"></a> |
| <FONT color="green">196</FONT> else<a name="line.196"></a> |
| <FONT color="green">197</FONT> {<a name="line.197"></a> |
| <FONT color="green">198</FONT> buf[count++] = (byte) (0xe0 + (c >> 12));<a name="line.198"></a> |
| <FONT color="green">199</FONT> buf[count++] = (byte) (0x80 + ((c >> 6) & 0x3f));<a name="line.199"></a> |
| <FONT color="green">200</FONT> buf[count++] = (byte) (0x80 + (c & 0x3f));<a name="line.200"></a> |
| <FONT color="green">201</FONT> }<a name="line.201"></a> |
| <FONT color="green">202</FONT> }<a name="line.202"></a> |
| <FONT color="green">203</FONT> <a name="line.203"></a> |
| <FONT color="green">204</FONT> /**<a name="line.204"></a> |
| <FONT color="green">205</FONT> * Write a portion of an array of characters.<a name="line.205"></a> |
| <FONT color="green">206</FONT> *<a name="line.206"></a> |
| <FONT color="green">207</FONT> * @param chars Array of characters<a name="line.207"></a> |
| <FONT color="green">208</FONT> * @param start Offset from which to start writing characters<a name="line.208"></a> |
| <FONT color="green">209</FONT> * @param length Number of characters to write<a name="line.209"></a> |
| <FONT color="green">210</FONT> *<a name="line.210"></a> |
| <FONT color="green">211</FONT> * @exception IOException If an I/O error occurs<a name="line.211"></a> |
| <FONT color="green">212</FONT> *<a name="line.212"></a> |
| <FONT color="green">213</FONT> * @throws java.io.IOException<a name="line.213"></a> |
| <FONT color="green">214</FONT> */<a name="line.214"></a> |
| <FONT color="green">215</FONT> public void write(final char chars[], final int start, final int length)<a name="line.215"></a> |
| <FONT color="green">216</FONT> throws java.io.IOException<a name="line.216"></a> |
| <FONT color="green">217</FONT> {<a name="line.217"></a> |
| <FONT color="green">218</FONT> // send to the real writer<a name="line.218"></a> |
| <FONT color="green">219</FONT> if (m_writer != null)<a name="line.219"></a> |
| <FONT color="green">220</FONT> m_writer.write(chars, start, length);<a name="line.220"></a> |
| <FONT color="green">221</FONT> <a name="line.221"></a> |
| <FONT color="green">222</FONT> // from here on just collect for tracing purposes<a name="line.222"></a> |
| <FONT color="green">223</FONT> int lengthx3 = (length << 1) + length;<a name="line.223"></a> |
| <FONT color="green">224</FONT> <a name="line.224"></a> |
| <FONT color="green">225</FONT> if (lengthx3 >= buf_length)<a name="line.225"></a> |
| <FONT color="green">226</FONT> {<a name="line.226"></a> |
| <FONT color="green">227</FONT> <a name="line.227"></a> |
| <FONT color="green">228</FONT> /* If the request length exceeds the size of the output buffer,<a name="line.228"></a> |
| <FONT color="green">229</FONT> * flush the output buffer and make the buffer bigger to handle.<a name="line.229"></a> |
| <FONT color="green">230</FONT> */<a name="line.230"></a> |
| <FONT color="green">231</FONT> <a name="line.231"></a> |
| <FONT color="green">232</FONT> flushBuffer();<a name="line.232"></a> |
| <FONT color="green">233</FONT> setBufferSize(2 * lengthx3);<a name="line.233"></a> |
| <FONT color="green">234</FONT> <a name="line.234"></a> |
| <FONT color="green">235</FONT> }<a name="line.235"></a> |
| <FONT color="green">236</FONT> <a name="line.236"></a> |
| <FONT color="green">237</FONT> if (lengthx3 > buf_length - count)<a name="line.237"></a> |
| <FONT color="green">238</FONT> {<a name="line.238"></a> |
| <FONT color="green">239</FONT> flushBuffer();<a name="line.239"></a> |
| <FONT color="green">240</FONT> }<a name="line.240"></a> |
| <FONT color="green">241</FONT> <a name="line.241"></a> |
| <FONT color="green">242</FONT> final int n = length + start;<a name="line.242"></a> |
| <FONT color="green">243</FONT> for (int i = start; i < n; i++)<a name="line.243"></a> |
| <FONT color="green">244</FONT> {<a name="line.244"></a> |
| <FONT color="green">245</FONT> final char c = chars[i];<a name="line.245"></a> |
| <FONT color="green">246</FONT> <a name="line.246"></a> |
| <FONT color="green">247</FONT> if (c < 0x80)<a name="line.247"></a> |
| <FONT color="green">248</FONT> buf[count++] = (byte) (c);<a name="line.248"></a> |
| <FONT color="green">249</FONT> else if (c < 0x800)<a name="line.249"></a> |
| <FONT color="green">250</FONT> {<a name="line.250"></a> |
| <FONT color="green">251</FONT> buf[count++] = (byte) (0xc0 + (c >> 6));<a name="line.251"></a> |
| <FONT color="green">252</FONT> buf[count++] = (byte) (0x80 + (c & 0x3f));<a name="line.252"></a> |
| <FONT color="green">253</FONT> }<a name="line.253"></a> |
| <FONT color="green">254</FONT> else<a name="line.254"></a> |
| <FONT color="green">255</FONT> {<a name="line.255"></a> |
| <FONT color="green">256</FONT> buf[count++] = (byte) (0xe0 + (c >> 12));<a name="line.256"></a> |
| <FONT color="green">257</FONT> buf[count++] = (byte) (0x80 + ((c >> 6) & 0x3f));<a name="line.257"></a> |
| <FONT color="green">258</FONT> buf[count++] = (byte) (0x80 + (c & 0x3f));<a name="line.258"></a> |
| <FONT color="green">259</FONT> }<a name="line.259"></a> |
| <FONT color="green">260</FONT> }<a name="line.260"></a> |
| <FONT color="green">261</FONT> <a name="line.261"></a> |
| <FONT color="green">262</FONT> }<a name="line.262"></a> |
| <FONT color="green">263</FONT> <a name="line.263"></a> |
| <FONT color="green">264</FONT> /**<a name="line.264"></a> |
| <FONT color="green">265</FONT> * Write a string.<a name="line.265"></a> |
| <FONT color="green">266</FONT> *<a name="line.266"></a> |
| <FONT color="green">267</FONT> * @param s String to be written<a name="line.267"></a> |
| <FONT color="green">268</FONT> *<a name="line.268"></a> |
| <FONT color="green">269</FONT> * @exception IOException If an I/O error occurs<a name="line.269"></a> |
| <FONT color="green">270</FONT> */<a name="line.270"></a> |
| <FONT color="green">271</FONT> public void write(final String s) throws IOException<a name="line.271"></a> |
| <FONT color="green">272</FONT> {<a name="line.272"></a> |
| <FONT color="green">273</FONT> // send to the real writer<a name="line.273"></a> |
| <FONT color="green">274</FONT> if (m_writer != null)<a name="line.274"></a> |
| <FONT color="green">275</FONT> m_writer.write(s);<a name="line.275"></a> |
| <FONT color="green">276</FONT> <a name="line.276"></a> |
| <FONT color="green">277</FONT> // from here on just collect for tracing purposes<a name="line.277"></a> |
| <FONT color="green">278</FONT> final int length = s.length();<a name="line.278"></a> |
| <FONT color="green">279</FONT> <a name="line.279"></a> |
| <FONT color="green">280</FONT> // We multiply the length by three since this is the maximum length<a name="line.280"></a> |
| <FONT color="green">281</FONT> // of the characters that we can put into the buffer. It is possible<a name="line.281"></a> |
| <FONT color="green">282</FONT> // for each Unicode character to expand to three bytes.<a name="line.282"></a> |
| <FONT color="green">283</FONT> <a name="line.283"></a> |
| <FONT color="green">284</FONT> int lengthx3 = (length << 1) + length;<a name="line.284"></a> |
| <FONT color="green">285</FONT> <a name="line.285"></a> |
| <FONT color="green">286</FONT> if (lengthx3 >= buf_length)<a name="line.286"></a> |
| <FONT color="green">287</FONT> {<a name="line.287"></a> |
| <FONT color="green">288</FONT> <a name="line.288"></a> |
| <FONT color="green">289</FONT> /* If the request length exceeds the size of the output buffer,<a name="line.289"></a> |
| <FONT color="green">290</FONT> * flush the output buffer and make the buffer bigger to handle.<a name="line.290"></a> |
| <FONT color="green">291</FONT> */<a name="line.291"></a> |
| <FONT color="green">292</FONT> <a name="line.292"></a> |
| <FONT color="green">293</FONT> flushBuffer();<a name="line.293"></a> |
| <FONT color="green">294</FONT> setBufferSize(2 * lengthx3);<a name="line.294"></a> |
| <FONT color="green">295</FONT> }<a name="line.295"></a> |
| <FONT color="green">296</FONT> <a name="line.296"></a> |
| <FONT color="green">297</FONT> if (lengthx3 > buf_length - count)<a name="line.297"></a> |
| <FONT color="green">298</FONT> {<a name="line.298"></a> |
| <FONT color="green">299</FONT> flushBuffer();<a name="line.299"></a> |
| <FONT color="green">300</FONT> }<a name="line.300"></a> |
| <FONT color="green">301</FONT> <a name="line.301"></a> |
| <FONT color="green">302</FONT> for (int i = 0; i < length; i++)<a name="line.302"></a> |
| <FONT color="green">303</FONT> {<a name="line.303"></a> |
| <FONT color="green">304</FONT> final char c = s.charAt(i);<a name="line.304"></a> |
| <FONT color="green">305</FONT> <a name="line.305"></a> |
| <FONT color="green">306</FONT> if (c < 0x80)<a name="line.306"></a> |
| <FONT color="green">307</FONT> buf[count++] = (byte) (c);<a name="line.307"></a> |
| <FONT color="green">308</FONT> else if (c < 0x800)<a name="line.308"></a> |
| <FONT color="green">309</FONT> {<a name="line.309"></a> |
| <FONT color="green">310</FONT> buf[count++] = (byte) (0xc0 + (c >> 6));<a name="line.310"></a> |
| <FONT color="green">311</FONT> buf[count++] = (byte) (0x80 + (c & 0x3f));<a name="line.311"></a> |
| <FONT color="green">312</FONT> }<a name="line.312"></a> |
| <FONT color="green">313</FONT> else<a name="line.313"></a> |
| <FONT color="green">314</FONT> {<a name="line.314"></a> |
| <FONT color="green">315</FONT> buf[count++] = (byte) (0xe0 + (c >> 12));<a name="line.315"></a> |
| <FONT color="green">316</FONT> buf[count++] = (byte) (0x80 + ((c >> 6) & 0x3f));<a name="line.316"></a> |
| <FONT color="green">317</FONT> buf[count++] = (byte) (0x80 + (c & 0x3f));<a name="line.317"></a> |
| <FONT color="green">318</FONT> }<a name="line.318"></a> |
| <FONT color="green">319</FONT> }<a name="line.319"></a> |
| <FONT color="green">320</FONT> }<a name="line.320"></a> |
| <FONT color="green">321</FONT> <a name="line.321"></a> |
| <FONT color="green">322</FONT> /**<a name="line.322"></a> |
| <FONT color="green">323</FONT> * Get the writer that this one directly wraps.<a name="line.323"></a> |
| <FONT color="green">324</FONT> */<a name="line.324"></a> |
| <FONT color="green">325</FONT> public Writer getWriter()<a name="line.325"></a> |
| <FONT color="green">326</FONT> {<a name="line.326"></a> |
| <FONT color="green">327</FONT> return m_writer;<a name="line.327"></a> |
| <FONT color="green">328</FONT> }<a name="line.328"></a> |
| <FONT color="green">329</FONT> <a name="line.329"></a> |
| <FONT color="green">330</FONT> /**<a name="line.330"></a> |
| <FONT color="green">331</FONT> * Get the OutputStream that is the at the end of the<a name="line.331"></a> |
| <FONT color="green">332</FONT> * chain of writers.<a name="line.332"></a> |
| <FONT color="green">333</FONT> */<a name="line.333"></a> |
| <FONT color="green">334</FONT> public OutputStream getOutputStream()<a name="line.334"></a> |
| <FONT color="green">335</FONT> {<a name="line.335"></a> |
| <FONT color="green">336</FONT> OutputStream retval = null;<a name="line.336"></a> |
| <FONT color="green">337</FONT> if (m_writer instanceof WriterChain)<a name="line.337"></a> |
| <FONT color="green">338</FONT> retval = ((WriterChain) m_writer).getOutputStream();<a name="line.338"></a> |
| <FONT color="green">339</FONT> return retval;<a name="line.339"></a> |
| <FONT color="green">340</FONT> }<a name="line.340"></a> |
| <FONT color="green">341</FONT> }<a name="line.341"></a> |
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| </PRE> |
| </BODY> |
| </HTML> |
