1 /* 2 * Copyright (c) 2004, 2011, Oracle and/or its affiliates. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * - Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 11 * - Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * - Neither the name of Oracle nor the names of its 16 * contributors may be used to endorse or promote products derived 17 * from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 20 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * This source code is provided to illustrate the usage of a given feature 34 * or technique and has been deliberately simplified. Additional steps 35 * required for a production-quality application, such as security checks, 36 * input validation and proper error handling, might not be present in 37 * this sample code. 38 */ 39 40 41 import java.io.*; 42 import java.nio.*; 43 import java.nio.charset.*; 44 45 /** 46 * A Content type that provides for transferring Strings. 47 * 48 * @author Mark Reinhold 49 * @author Brad R. Wetmore 50 */ 51 class StringContent implements Content { 52 53 private static Charset ascii = Charset.forName("US-ASCII"); 54 55 private String type; // MIME type 56 private String content; 57 StringContent(CharSequence c, String t)58 StringContent(CharSequence c, String t) { 59 content = c.toString(); 60 if (!content.endsWith("\n")) 61 content += "\n"; 62 type = t + "; charset=iso-8859-1"; 63 } 64 StringContent(CharSequence c)65 StringContent(CharSequence c) { 66 this(c, "text/plain"); 67 } 68 StringContent(Exception x)69 StringContent(Exception x) { 70 StringWriter sw = new StringWriter(); 71 x.printStackTrace(new PrintWriter(sw)); 72 type = "text/plain; charset=iso-8859-1"; 73 content = sw.toString(); 74 } 75 type()76 public String type() { 77 return type; 78 } 79 80 private ByteBuffer bb = null; 81 encode()82 private void encode() { 83 if (bb == null) 84 bb = ascii.encode(CharBuffer.wrap(content)); 85 } 86 length()87 public long length() { 88 encode(); 89 return bb.remaining(); 90 } 91 prepare()92 public void prepare() { 93 encode(); 94 bb.rewind(); 95 } 96 send(ChannelIO cio)97 public boolean send(ChannelIO cio) throws IOException { 98 if (bb == null) 99 throw new IllegalStateException(); 100 cio.write(bb); 101 102 return bb.hasRemaining(); 103 } 104 release()105 public void release() throws IOException { 106 } 107 } 108