/*
* Copyright (c) 2003-2011, Simon Brown
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* - Neither the name of Pebble nor the names of its contributors may
* be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package migration;
import org.radeox.api.engine.RenderEngine;
import org.radeox.api.engine.WikiRenderEngine;
import org.radeox.api.engine.context.InitialRenderContext;
import org.radeox.engine.BaseRenderEngine;
import org.radeox.engine.context.BaseInitialRenderContext;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Decorates blog entries and comments by rendering them with Radeox, internal
* links pointing to static pages within the blog.
*
* @author Simon Brown
*/
public class RadeoxRenderer {
private static final String WIKI_START_TAG = "<wiki>";
private static final String WIKI_END_TAG = "</wiki>";
public static String wikify(String content) {
InitialRenderContext renderContext = new BaseInitialRenderContext();
RenderEngine renderEngine = new RadeoxWikiRenderEngine(renderContext);
// is there work to do?
if (content == null || content.length() == 0) {
return "";
}
// this pattern says "take the shortest match you can find where there are
// one or more characters between wiki tags"
// - the match is case insensitive and DOTALL means that newlines are
// - considered as a character match
Pattern p = Pattern.compile(WIKI_START_TAG + ".+?" + WIKI_END_TAG,
Pattern.CASE_INSENSITIVE | Pattern.DOTALL);
Matcher m = p.matcher(content);
// while there are blocks to be escaped
while (m.find()) {
int start = m.start();
int end = m.end();
// grab the text, strip off the escape tags and transform it
String textToWikify = content.substring(start, end);
textToWikify = textToWikify.substring(WIKI_START_TAG.length(), textToWikify.length() - WIKI_END_TAG.length());
textToWikify = renderEngine.render(textToWikify, renderContext);
// now add it back into the original text
content = content.substring(0, start) + textToWikify + content.substring(end, content.length());
m = p.matcher(content);
}
return content;
}
}
class RadeoxWikiRenderEngine extends BaseRenderEngine implements WikiRenderEngine {
public RadeoxWikiRenderEngine(InitialRenderContext context) {
super(context);
context.setRenderEngine(this);
}
public boolean exists(String name) {
return false;
}
public boolean showCreate() {
return false;
}
public void appendLink(StringBuffer buffer, String name, String view) {
throw new UnsupportedOperationException();
}
public void appendLink(StringBuffer buffer, String name, String view, String anchor) {
throw new UnsupportedOperationException();
}
public void appendCreateLink(StringBuffer buffer, String name, String view) {
throw new UnsupportedOperationException();
}
}