001 /*
002 * Copyright (c) 2005 Marko Karppinen & Co. LLC
003 *
004 * Permission is hereby granted, free of charge, to any person obtaining a
005 * copy of this software and associated documentation files (the "Software"),
006 * to deal in the Software without restriction, including without limitation
007 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
008 * and/or sell copies of the Software, and to permit persons to whom the
009 * Software is furnished to do so, subject to the following conditions:
010 *
011 * The above copyright notice and this permission notice shall be included in
012 * all copies or substantial portions of the Software.
013 *
014 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
015 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
016 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
017 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
018 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
019 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
020 * DEALINGS IN THE SOFTWARE.
021 */
022
023 package fi.karppinen.xml;
024
025 import java.io.IOException;
026 import java.io.InputStream;
027 import java.io.OutputStream;
028 import java.io.OutputStreamWriter;
029 import java.io.Reader;
030 import java.io.Writer;
031
032 import org.mortbay.util.IO;
033 import org.xml.sax.InputSource;
034
035 /**
036 * Makes it possible to feed Markdown source to markdown.pl and then to TagSoup.
037 * The system property <code>fi.karppinen.xml.markdownexecutable</code> should
038 * contain the absolute path to markdown.pl.
039 *
040 * @version $Id: MarkdownTagSoupInputSource.java,v 1.1 2006/10/30 19:57:09 hsivonen Exp $
041 * @author hsivonen
042 */
043 public class MarkdownTagSoupInputSource extends InputSource {
044
045 private static final String[] ARGS = { "--html4tags" };
046
047 private Process markdown;
048
049 private void startProcess() throws IOException {
050 markdown = Runtime.getRuntime().exec(System.getProperty("fi.karppinen.xml.markdownexecutable", "Markdown"));
051 }
052
053 /**
054 * The string constructor.
055 *
056 * @param content a string containing Markdown source
057 * @throws IOException if something goes wrong
058 */
059 public MarkdownTagSoupInputSource(String content) throws IOException {
060 super();
061 initWithString(content);
062 }
063
064 /**
065 * @param content
066 * @throws IOException
067 */
068 private void initWithString(String content) throws IOException {
069 startProcess();
070 Writer out = new OutputStreamWriter(streamToMarkdown(), "UTF-8");
071 out.write(content);
072 out.close();
073 }
074
075 /**
076 * The reader constructor.
077 *
078 * @param content a reader reading Markdown source
079 * @throws IOException if something goes wrong
080 */
081 public MarkdownTagSoupInputSource(Reader content) throws IOException {
082 super();
083 initWithReader(content);
084 }
085
086 /**
087 * @param content
088 * @throws IOException
089 */
090 private void initWithReader(Reader content) throws IOException {
091 startProcess();
092 Writer out = new OutputStreamWriter(streamToMarkdown(), "UTF-8");
093 IO.copy(content, out);
094 out.close();
095 }
096
097 private OutputStream streamToMarkdown() {
098 return markdown.getOutputStream();
099 }
100 /**
101 * @see org.xml.sax.InputSource#getByteStream()
102 */
103 public InputStream getByteStream() {
104 return markdown.getInputStream();
105 }
106 /**
107 * @see org.xml.sax.InputSource#getCharacterStream()
108 */
109 public Reader getCharacterStream() {
110 return null;
111 }
112 /**
113 * @see org.xml.sax.InputSource#getEncoding()
114 */
115 public String getEncoding() {
116 return "UTF-8";
117 }
118 /**
119 * @see org.xml.sax.InputSource#setByteStream(java.io.InputStream)
120 */
121 public void setByteStream(InputStream arg0) {
122 throw new RuntimeException("Not supported.");
123 }
124 /**
125 * @see org.xml.sax.InputSource#setCharacterStream(java.io.Reader)
126 */
127 public void setCharacterStream(Reader arg0) {
128 throw new RuntimeException("Not supported.");
129 }
130 /**
131 * @see org.xml.sax.InputSource#setEncoding(java.lang.String)
132 */
133 public void setEncoding(String arg0) {
134 throw new RuntimeException("Not supported.");
135 }
136 }