org.opoo.press.converter.AbstractWikiTextConverter.java Source code

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Here is the source code for org.opoo.press.converter.AbstractWikiTextConverter.java
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/*
 * Copyright 2013 Alex Lin.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.opoo.press.converter;

import org.apache.commons.io.FilenameUtils;
import org.eclipse.mylyn.wikitext.core.parser.MarkupParser;
import org.eclipse.mylyn.wikitext.core.parser.builder.HtmlDocumentBuilder;
import org.opoo.press.Converter;
import org.opoo.press.Source;

import java.io.StringWriter;

/**
 * WikiText converter.
 * 
 * *.textile, *.tracwiki, *.mediawiki, *.twiki, *.confluence
 * 
 * @see http://wiki.eclipse.org/Mylyn/WikiText
 * @see http://help.eclipse.org/juno/topic/org.eclipse.mylyn.wikitext.help.ui/help/devguide/Using-The-WikiText-Parser.html
 * @author Alex Lin
 *
 */
public abstract class AbstractWikiTextConverter implements Converter {
    /* (non-Javadoc)
     * @see org.opoo.press.Converter#convert(java.lang.String)
     */
    @Override
    public String convert(String content) {
        MarkupParser parser = getMarkupParser();

        StringWriter writer = new StringWriter();
        HtmlDocumentBuilder builder = new HtmlDocumentBuilder(writer);
        // avoid the <html> and <body> tags 
        builder.setEmitAsDocument(false);

        parser.setBuilder(builder);
        parser.parse(content);
        parser.setBuilder(null);
        return writer.toString();
    }

    //   public String convert2(String content){
    //      MarkupParser parser = getMarkupParser();
    //      StringWriter out = new StringWriter();
    //      parser.setBuilder(new HtmlDocumentBuilder(out));
    //      parser.parse(content, false);
    //      parser.setBuilder(null);
    //      return out.toString();
    //   }

    /**
     * Return the MarkupParser instance.
     * @return MarkupParser for this converter.
     */
    protected abstract MarkupParser getMarkupParser();

    /* (non-Javadoc)
     * @see org.opoo.press.Converter#getOutputFileExtension(org.opoo.press.Source)
     */
    @Override
    public String getOutputFileExtension(Source src) {
        return ".html";
    }

    /* (non-Javadoc)
     * @see org.opoo.press.Converter#matches(org.opoo.press.Source)
     */
    @Override
    public boolean matches(Source src) {
        String name = src.getSourceEntry().getName().toLowerCase();
        String[] extensions = getInputFileExtensions();
        if (extensions.length == 1) {
            return FilenameUtils.isExtension(name, extensions[0]);
        }

        return FilenameUtils.isExtension(name, extensions);
    }

    protected abstract String[] getInputFileExtensions();
}