| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <html lang="en"> |
| <head> |
| <title>Source code</title> |
| <link rel="stylesheet" type="text/css" href="../../../../../javadoc.css" title="Style"> |
| </head> |
| <body> |
| <div class="sourceContainer"> |
| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * contributor license agreements. See the NOTICE file distributed with<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * this work for additional information regarding copyright ownership.<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * The ASF licenses this file to You under the Apache License, Version 2.0<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * the License. You may obtain a copy of the License at<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> *<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> *<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * See the License for the specific language governing permissions and<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * limitations under the License.<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> */<a name="line.16"></a> |
| <span class="sourceLineNo">017</span>package org.apache.juneau.internal;<a name="line.17"></a> |
| <span class="sourceLineNo">018</span><a name="line.18"></a> |
| <span class="sourceLineNo">019</span>import java.io.IOException;<a name="line.19"></a> |
| <span class="sourceLineNo">020</span>import java.io.OutputStream;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.io.Writer;<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.Charset;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import java.nio.charset.CharsetDecoder;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.nio.charset.CoderResult;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.nio.charset.CodingErrorAction;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span><a name="line.28"></a> |
| <span class="sourceLineNo">029</span>/**<a name="line.29"></a> |
| <span class="sourceLineNo">030</span> * {@link OutputStream} implementation that transforms a byte stream to a<a name="line.30"></a> |
| <span class="sourceLineNo">031</span> * character stream using a specified charset encoding and writes the resulting<a name="line.31"></a> |
| <span class="sourceLineNo">032</span> * stream to a {@link Writer}. The stream is transformed using a<a name="line.32"></a> |
| <span class="sourceLineNo">033</span> * {@link CharsetDecoder} object, guaranteeing that all charset<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> * encodings supported by the JRE are handled correctly.<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> * <p><a name="line.35"></a> |
| <span class="sourceLineNo">036</span> * The output of the {@link CharsetDecoder} is buffered using a fixed size buffer.<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> * This implies that the data is written to the underlying {@link Writer} in chunks<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * that are no larger than the size of this buffer. By default, the buffer is<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * flushed only when it overflows or when {@link #flush()} or {@link #close()}<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * is called. In general there is therefore no need to wrap the underlying {@link Writer}<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * in a {@link java.io.BufferedWriter}. {@link WriterOutputStream} can also<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * be instructed to flush the buffer after each write operation. In this case, all<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * available data is written immediately to the underlying {@link Writer}, implying that<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> * the current position of the {@link Writer} is correlated to the current position<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> * of the {@link WriterOutputStream}.<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> * <p><a name="line.46"></a> |
| <span class="sourceLineNo">047</span> * {@link WriterOutputStream} implements the inverse transformation of {@link java.io.OutputStreamWriter};<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * in the following example, writing to {@code out2} would have the same result as writing to<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * {@code out} directly (provided that the byte sequence is legal with respect to the<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * charset encoding):<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * <pre><a name="line.51"></a> |
| <span class="sourceLineNo">052</span> * OutputStream out = ...<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * Charset cs = ...<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> * OutputStreamWriter writer = new OutputStreamWriter(out, cs);<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * WriterOutputStream out2 = new WriterOutputStream(writer, cs);</pre><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * {@link WriterOutputStream} implements the same transformation as {@link java.io.InputStreamReader},<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * except that the control flow is reversed: both classes transform a byte stream<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * into a character stream, but {@link java.io.InputStreamReader} pulls data from the underlying stream,<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> * while {@link WriterOutputStream} pushes it to the underlying stream.<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> * <p><a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * Note that while there are use cases where there is no alternative to using<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> * this class, very often the need to use this class is an indication of a flaw<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> * in the design of the code. This class is typically used in situations where an existing<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> * API only accepts an {@link OutputStream} object, but where the stream is known to represent<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> * character data that must be decoded for further use.<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> * <p><a name="line.66"></a> |
| <span class="sourceLineNo">067</span> * Instances of {@link WriterOutputStream} are not thread safe.<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> *<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> * @since 2.0<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> */<a name="line.70"></a> |
| <span class="sourceLineNo">071</span>public class WriterOutputStream extends OutputStream {<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> private static final int BUFFER_SIZE = 1024;<a name="line.72"></a> |
| <span class="sourceLineNo">073</span><a name="line.73"></a> |
| <span class="sourceLineNo">074</span> private final Writer writer;<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> private final CharsetDecoder decoder;<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> private final boolean writeImmediately;<a name="line.76"></a> |
| <span class="sourceLineNo">077</span><a name="line.77"></a> |
| <span class="sourceLineNo">078</span> /**<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> * ByteBuffer used as input for the decoder. This buffer can be small<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> * as it is used only to transfer the received data to the<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> * decoder.<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> */<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> private final ByteBuffer decoderIn = ByteBuffer.allocate(128);<a name="line.83"></a> |
| <span class="sourceLineNo">084</span><a name="line.84"></a> |
| <span class="sourceLineNo">085</span> /**<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> * CharBuffer used as output for the decoder. It should be<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> * somewhat larger as we write from this buffer to the<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> * underlying Writer.<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> */<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> private final CharBuffer decoderOut;<a name="line.90"></a> |
| <span class="sourceLineNo">091</span><a name="line.91"></a> |
| <span class="sourceLineNo">092</span> /**<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> * Constructs a new {@link WriterOutputStream} with a default output buffer size of 1024<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> * characters. The output buffer will only be flushed when it overflows or when {@link #flush()} or {@link #close()}<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> * is called.<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> *<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> * @param writer the target {@link Writer}<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> * @param decoder the charset decoder<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> * @since 2.1<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> */<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> public WriterOutputStream(final Writer writer, final CharsetDecoder decoder) {<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> this(writer, decoder, BUFFER_SIZE, false);<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> }<a name="line.103"></a> |
| <span class="sourceLineNo">104</span><a name="line.104"></a> |
| <span class="sourceLineNo">105</span> /**<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> * Constructs a new {@link WriterOutputStream}.<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> *<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> * @param writer the target {@link Writer}<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> * @param decoder the charset decoder<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> * @param bufferSize the size of the output buffer in number of characters<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> * @param writeImmediately If {@code true} the output buffer will be flushed after each<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> * write operation, i.e. all available data will be written to the<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> * underlying {@link Writer} immediately. If {@code false}, the<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> * output buffer will only be flushed when it overflows or when<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> * {@link #flush()} or {@link #close()} is called.<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> * @since 2.1<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> */<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> public WriterOutputStream(final Writer writer, final CharsetDecoder decoder, final int bufferSize,<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> final boolean writeImmediately) {<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> checkIbmJdkWithBrokenUTF16( decoder.charset());<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> this.writer = writer;<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> this.decoder = decoder;<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> this.writeImmediately = writeImmediately;<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> decoderOut = CharBuffer.allocate(bufferSize);<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> /**<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> * Constructs a new {@link WriterOutputStream}.<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> *<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> * @param writer the target {@link Writer}<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> * @param charset the charset encoding<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> * @param bufferSize the size of the output buffer in number of characters<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> * @param writeImmediately If {@code true} the output buffer will be flushed after each<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> * write operation, i.e. all available data will be written to the<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> * underlying {@link Writer} immediately. If {@code false}, the<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> * output buffer will only be flushed when it overflows or when<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> * {@link #flush()} or {@link #close()} is called.<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> */<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> public WriterOutputStream(final Writer writer, final Charset charset, final int bufferSize,<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> final boolean writeImmediately) {<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> this(writer,<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> charset.newDecoder()<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> .onMalformedInput(CodingErrorAction.REPLACE)<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> .onUnmappableCharacter(CodingErrorAction.REPLACE)<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> .replaceWith("?"),<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> bufferSize,<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> writeImmediately);<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> }<a name="line.148"></a> |
| <span class="sourceLineNo">149</span><a name="line.149"></a> |
| <span class="sourceLineNo">150</span> /**<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> * Constructs a new {@link WriterOutputStream} with a default output buffer size of 1024<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> * characters. The output buffer will only be flushed when it overflows or when {@link #flush()} or {@link #close()}<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> * is called.<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> *<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> * @param writer the target {@link Writer}<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> * @param charset the charset encoding<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> */<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> public WriterOutputStream(final Writer writer, final Charset charset) {<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> this(writer, charset, BUFFER_SIZE, false);<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> }<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> * Constructs a new {@link WriterOutputStream}.<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> *<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> * @param writer the target {@link Writer}<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> * @param charsetName the name of the charset encoding<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> * @param bufferSize the size of the output buffer in number of characters<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> * @param writeImmediately If {@code true} the output buffer will be flushed after each<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> * write operation, i.e. all available data will be written to the<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> * underlying {@link Writer} immediately. If {@code false}, the<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> * output buffer will only be flushed when it overflows or when<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> * {@link #flush()} or {@link #close()} is called.<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> */<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> public WriterOutputStream(final Writer writer, final String charsetName, final int bufferSize,<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> final boolean writeImmediately) {<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> this(writer, Charset.forName(charsetName), bufferSize, writeImmediately);<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> * Constructs a new {@link WriterOutputStream} with a default output buffer size of 1024<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> * characters. The output buffer will only be flushed when it overflows or when {@link #flush()} or {@link #close()}<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> * is called.<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> *<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> * @param writer the target {@link Writer}<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> * @param charsetName the name of the charset encoding<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> */<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> public WriterOutputStream(final Writer writer, final String charsetName) {<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> this(writer, charsetName, BUFFER_SIZE, false);<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> * Write bytes from the specified byte array to the stream.<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> *<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> * @param b the byte array containing the bytes to write<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> * @param off the start offset in the byte array<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> * @param len the number of bytes to write<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> * @throws IOException if an I/O error occurs<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> */<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> @Override<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> public void write(final byte[] b, int off, int len) throws IOException {<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> while (len > 0) {<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> final int c = Math.min(len, decoderIn.remaining());<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> decoderIn.put(b, off, c);<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> processInput(false);<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> len -= c;<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> off += c;<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> }<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> if (writeImmediately) {<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> flushOutput();<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> }<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> }<a name="line.211"></a> |
| <span class="sourceLineNo">212</span><a name="line.212"></a> |
| <span class="sourceLineNo">213</span> /**<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> * Write bytes from the specified byte array to the stream.<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> *<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> * @param b the byte array containing the bytes to write<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> * @throws IOException if an I/O error occurs<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> */<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> @Override<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> public void write(final byte[] b) throws IOException {<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> write(b, 0, b.length);<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> }<a name="line.222"></a> |
| <span class="sourceLineNo">223</span><a name="line.223"></a> |
| <span class="sourceLineNo">224</span> /**<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> * Write a single byte to the stream.<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> *<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> * @param b the byte to write<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> * @throws IOException if an I/O error occurs<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> */<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> @Override<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> public void write(final int b) throws IOException {<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> write(new byte[] { (byte)b }, 0, 1);<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> }<a name="line.233"></a> |
| <span class="sourceLineNo">234</span><a name="line.234"></a> |
| <span class="sourceLineNo">235</span> /**<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> * Flush the stream. Any remaining content accumulated in the output buffer<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> * will be written to the underlying {@link Writer}. After that<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> * {@link Writer#flush()} will be called.<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> * @throws IOException if an I/O error occurs<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> */<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> @Override<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> public void flush() throws IOException {<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> flushOutput();<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> writer.flush();<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> }<a name="line.245"></a> |
| <span class="sourceLineNo">246</span><a name="line.246"></a> |
| <span class="sourceLineNo">247</span> /**<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> * Close the stream. Any remaining content accumulated in the output buffer<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> * will be written to the underlying {@link Writer}. After that<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> * {@link Writer#close()} will be called.<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> * @throws IOException if an I/O error occurs<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> */<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> @Override<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> public void close() throws IOException {<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> processInput(true);<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> flushOutput();<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> writer.close();<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> }<a name="line.258"></a> |
| <span class="sourceLineNo">259</span><a name="line.259"></a> |
| <span class="sourceLineNo">260</span> /**<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> * Decode the contents of the input ByteBuffer into a CharBuffer.<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> *<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> * @param endOfInput indicates end of input<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> * @throws IOException if an I/O error occurs<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> */<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> private void processInput(final boolean endOfInput) throws IOException {<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> // Prepare decoderIn for reading<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> decoderIn.flip();<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> CoderResult coderResult;<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> while (true) {<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> coderResult = decoder.decode(decoderIn, decoderOut, endOfInput);<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> if (coderResult.isOverflow()) {<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> flushOutput();<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> } else if (coderResult.isUnderflow()) {<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> break;<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> } else {<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> // The decoder is configured to replace malformed input and unmappable characters,<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> // so we should not get here.<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> throw new IOException("Unexpected coder result");<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> }<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> }<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> // Discard the bytes that have been read<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> decoderIn.compact();<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> }<a name="line.284"></a> |
| <span class="sourceLineNo">285</span><a name="line.285"></a> |
| <span class="sourceLineNo">286</span> /**<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> * Flush the output.<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> *<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> * @throws IOException if an I/O error occurs<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> */<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> private void flushOutput() throws IOException {<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> if (decoderOut.position() > 0) {<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> writer.write(decoderOut.array(), 0, decoderOut.position());<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> decoderOut.rewind();<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> }<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> }<a name="line.296"></a> |
| <span class="sourceLineNo">297</span><a name="line.297"></a> |
| <span class="sourceLineNo">298</span> /**<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> * Check if the JDK in use properly supports the given charset.<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> *<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> * @param charset the charset to check the support for<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> */<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> private static void checkIbmJdkWithBrokenUTF16(final Charset charset){<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> if (!"UTF-16".equals(charset.name())) {<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> return;<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> }<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> final String TEST_STRING_2 = "v\u00e9s";<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> final byte[] bytes = TEST_STRING_2.getBytes(charset);<a name="line.308"></a> |
| <span class="sourceLineNo">309</span><a name="line.309"></a> |
| <span class="sourceLineNo">310</span> final CharsetDecoder charsetDecoder2 = charset.newDecoder();<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> final ByteBuffer bb2 = ByteBuffer.allocate(16);<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> final CharBuffer cb2 = CharBuffer.allocate(TEST_STRING_2.length());<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> final int len = bytes.length;<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> for (int i = 0; i < len; i++) {<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> bb2.put(bytes[i]);<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> bb2.flip();<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> try {<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> charsetDecoder2.decode(bb2, cb2, i == (len - 1));<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> } catch ( final IllegalArgumentException e){<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> throw new UnsupportedOperationException("UTF-16 requested when runninng on an IBM JDK with broken UTF-16 support. " +<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> "Please find a JDK that supports UTF-16 if you intend to use UF-16 with WriterOutputStream");<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> }<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> bb2.compact();<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> }<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> cb2.rewind();<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> if (!TEST_STRING_2.equals(cb2.toString())){<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> throw new UnsupportedOperationException("UTF-16 requested when runninng on an IBM JDK with broken UTF-16 support. " +<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> "Please find a JDK that supports UTF-16 if you intend to use UF-16 with WriterOutputStream");<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> }<a name="line.329"></a> |
| <span class="sourceLineNo">330</span><a name="line.330"></a> |
| <span class="sourceLineNo">331</span> }<a name="line.331"></a> |
| <span class="sourceLineNo">332</span>}<a name="line.332"></a> |
| <span class="sourceLineNo">333</span><a name="line.333"></a> |
| <span class="sourceLineNo">334</span><a name="line.334"></a> |
| <span class="sourceLineNo">335</span><a name="line.335"></a> |
| <span class="sourceLineNo">336</span><a name="line.336"></a> |
| <span class="sourceLineNo">337</span><a name="line.337"></a> |
| <span class="sourceLineNo">338</span><a name="line.338"></a> |
| <span class="sourceLineNo">339</span><a name="line.339"></a> |
| <span class="sourceLineNo">340</span><a name="line.340"></a> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| </pre> |
| </div> |
| </body> |
| </html> |
