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com.liferay.wiki.internal.engine.WikiEngineRendererImpl Maven / Gradle / Ivy
/**
* Copyright (c) 2000-present Liferay, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*/
package com.liferay.wiki.internal.engine;
import com.liferay.osgi.service.tracker.collections.map.ServiceTrackerMap;
import com.liferay.osgi.service.tracker.collections.map.ServiceTrackerMapFactory;
import com.liferay.osgi.service.tracker.collections.map.ServiceTrackerMapListener;
import com.liferay.petra.string.StringPool;
import com.liferay.portal.kernel.cache.MultiVMPool;
import com.liferay.portal.kernel.cache.PortalCache;
import com.liferay.portal.kernel.diff.DiffHtmlUtil;
import com.liferay.portal.kernel.io.unsync.UnsyncStringReader;
import com.liferay.portal.kernel.portlet.LiferayPortletURL;
import com.liferay.portal.kernel.util.HtmlUtil;
import com.liferay.portal.kernel.util.StringUtil;
import com.liferay.portal.kernel.util.URLCodec;
import com.liferay.wiki.engine.WikiEngine;
import com.liferay.wiki.engine.WikiEngineRenderer;
import com.liferay.wiki.exception.PageContentException;
import com.liferay.wiki.exception.WikiFormatException;
import com.liferay.wiki.model.WikiPage;
import com.liferay.wiki.model.WikiPageDisplay;
import java.util.Collection;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.portlet.PortletURL;
import org.osgi.framework.BundleContext;
import org.osgi.service.component.annotations.Activate;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Deactivate;
import org.osgi.service.component.annotations.Reference;
/**
* @author Brian Wing Shun Chan
* @author Jorge Ferrer
*/
@Component(immediate = true, service = WikiEngineRenderer.class)
public class WikiEngineRendererImpl implements WikiEngineRenderer {
@Override
public String convert(
WikiPage page, PortletURL viewPageURL, PortletURL editPageURL,
String attachmentURLPrefix)
throws PageContentException, WikiFormatException {
LiferayPortletURL liferayViewPageURL = (LiferayPortletURL)viewPageURL;
LiferayPortletURL liferayEditPageURL = (LiferayPortletURL)editPageURL;
WikiEngine wikiEngine = fetchWikiEngine(page.getFormat());
if (wikiEngine == null) {
throw new WikiFormatException();
}
String content = wikiEngine.convert(
page, viewPageURL, editPageURL, attachmentURLPrefix);
String editPageURLString = StringPool.BLANK;
if (editPageURL != null) {
liferayEditPageURL.setParameter("title", "__REPLACEMENT__", false);
editPageURLString = editPageURL.toString();
editPageURLString = StringUtil.replace(
editPageURLString, "__REPLACEMENT__", "$1");
}
Matcher matcher = _editPageURLPattern.matcher(content);
content = _convertURLs(editPageURLString, matcher);
String viewPageURLString = StringPool.BLANK;
if (viewPageURL != null) {
liferayViewPageURL.setParameter("title", "__REPLACEMENT__", false);
viewPageURLString = viewPageURL.toString();
viewPageURLString = StringUtil.replace(
viewPageURLString, "__REPLACEMENT__", "$1");
}
matcher = _viewPageURLPattern.matcher(content);
content = _convertURLs(viewPageURLString, matcher);
content = _replaceAttachments(
content, page.getTitle(), attachmentURLPrefix);
return content;
}
@Override
public String diffHtml(
WikiPage sourcePage, WikiPage targetPage, PortletURL viewPageURL,
PortletURL editPageURL, String attachmentURLPrefix)
throws Exception {
String sourceContent = StringPool.BLANK;
String targetContent = StringPool.BLANK;
if (sourcePage != null) {
sourceContent = convert(
sourcePage, viewPageURL, editPageURL, attachmentURLPrefix);
}
if (targetPage != null) {
targetContent = convert(
targetPage, viewPageURL, editPageURL, attachmentURLPrefix);
}
return DiffHtmlUtil.diff(
new UnsyncStringReader(sourceContent),
new UnsyncStringReader(targetContent));
}
@Override
public WikiEngine fetchWikiEngine(String format) {
List wikiEngines = _serviceTrackerMap.getService(format);
if (wikiEngines == null) {
return null;
}
return wikiEngines.get(0);
}
@Override
public Collection getFormats() {
return _serviceTrackerMap.keySet();
}
@Activate
protected void activate(BundleContext bundleContext) {
_bundleContext = bundleContext;
_portalCache = _multiVMPool.getPortalCache(
WikiPageDisplay.class.getName());
_serviceTrackerMap = ServiceTrackerMapFactory.openMultiValueMap(
bundleContext, WikiEngine.class, null,
(serviceReference, emitter) -> {
WikiEngine wikiEngine = _bundleContext.getService(
serviceReference);
try {
emitter.emit(wikiEngine.getFormat());
}
finally {
_bundleContext.ungetService(serviceReference);
}
},
new ServiceTrackerMapListener
>() {
@Override
public void keyEmitted(
ServiceTrackerMap>
serviceTrackerMap,
String key, WikiEngine service, List content) {
_portalCache.removeAll();
}
@Override
public void keyRemoved(
ServiceTrackerMap>
serviceTrackerMap,
String key, WikiEngine service, List content) {
_portalCache.removeAll();
}
});
}
@Deactivate
protected void deactivate() {
_serviceTrackerMap.close();
}
private String _convertURLs(String url, Matcher matcher) {
StringBuffer sb = new StringBuffer();
while (matcher.find()) {
String replacement = null;
if (matcher.groupCount() >= 1) {
String encodedTitle = URLCodec.encodeURL(
HtmlUtil.unescape(matcher.group(1)));
replacement = StringUtil.replace(url, "$1", encodedTitle);
}
else {
replacement = url;
}
matcher.appendReplacement(sb, replacement);
}
sb = matcher.appendTail(sb);
return sb.toString();
}
private String _replaceAttachments(
String content, String title, String attachmentURLPrefix) {
content = StringUtil.replace(content, "[$WIKI_PAGE_NAME$]", title);
content = StringUtil.replace(
content, "[$ATTACHMENT_URL_PREFIX$]", attachmentURLPrefix);
return content;
}
private static final Pattern _editPageURLPattern = Pattern.compile(
"\\[\\$BEGIN_PAGE_TITLE_EDIT\\$\\](.*?)" +
"\\[\\$END_PAGE_TITLE_EDIT\\$\\]");
private static final Pattern _viewPageURLPattern = Pattern.compile(
"\\[\\$BEGIN_PAGE_TITLE\\$\\](.*?)\\[\\$END_PAGE_TITLE\\$\\]");
private BundleContext _bundleContext;
@Reference
private MultiVMPool _multiVMPool;
private PortalCache _portalCache;
private ServiceTrackerMap> _serviceTrackerMap;
}
