001    /**
002     * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portlet.wiki.engines;
016    
017    import com.liferay.portal.kernel.log.Log;
018    import com.liferay.portal.kernel.log.LogFactoryUtil;
019    import com.liferay.portal.kernel.portlet.FriendlyURLMapper;
020    import com.liferay.portal.kernel.portlet.Router;
021    import com.liferay.portal.kernel.util.StringPool;
022    import com.liferay.portal.kernel.util.StringUtil;
023    import com.liferay.portal.kernel.util.Validator;
024    import com.liferay.portal.model.Portlet;
025    import com.liferay.portal.service.PortletLocalServiceUtil;
026    import com.liferay.portal.util.Portal;
027    import com.liferay.portal.util.PortletKeys;
028    import com.liferay.portlet.wiki.NoSuchNodeException;
029    import com.liferay.portlet.wiki.PageContentException;
030    import com.liferay.portlet.wiki.model.WikiPage;
031    import com.liferay.portlet.wiki.service.WikiNodeLocalServiceUtil;
032    
033    import java.util.Collections;
034    import java.util.HashMap;
035    import java.util.List;
036    import java.util.Map;
037    
038    import javax.portlet.PortletURL;
039    
040    import net.htmlparser.jericho.Source;
041    import net.htmlparser.jericho.StartTag;
042    
043    /**
044     * @author Jorge Ferrer
045     * @author Zsigmond Rab
046     */
047    public class HtmlEngine implements WikiEngine {
048    
049            public HtmlEngine() {
050                    Portlet portlet = PortletLocalServiceUtil.getPortletById(
051                            PortletKeys.WIKI);
052    
053                    _friendlyURLMapping =
054                            Portal.FRIENDLY_URL_SEPARATOR + portlet.getFriendlyURLMapping();
055    
056                    FriendlyURLMapper friendlyURLMapper =
057                            portlet.getFriendlyURLMapperInstance();
058    
059                    _router = friendlyURLMapper.getRouter();
060            }
061    
062            @Override
063            public String convert(
064                    WikiPage page, PortletURL viewPageURL, PortletURL editPageURL,
065                    String attachmentURLPrefix) {
066    
067                    return page.getContent();
068            }
069    
070            @Override
071            public Map<String, Boolean> getOutgoingLinks(WikiPage page)
072                    throws PageContentException {
073    
074                    try {
075                            return _getOutgoingLinks(page);
076                    }
077                    catch (Exception e) {
078                            throw new PageContentException(e);
079                    }
080            }
081    
082            @Override
083            public void setInterWikiConfiguration(String interWikiConfiguration) {
084            }
085    
086            @Override
087            public void setMainConfiguration(String mainConfiguration) {
088            }
089    
090            @Override
091            public boolean validate(long nodeId, String newContent) {
092                    return true;
093            }
094    
095            private Map<String, Boolean> _getOutgoingLinks(WikiPage page)
096                    throws Exception {
097    
098                    if (Validator.isNull(page.getContent())) {
099                            return Collections.emptyMap();
100                    }
101    
102                    Map<String, Boolean> links = new HashMap<String, Boolean>();
103    
104                    Source source = new Source(page.getContent());
105    
106                    List<StartTag> startTags = source.getAllStartTags("a");
107    
108                    for (StartTag startTag : startTags) {
109                            String href = startTag.getAttributeValue("href");
110    
111                            if (Validator.isNull(href)) {
112                                    continue;
113                            }
114    
115                            int pos = href.lastIndexOf(_friendlyURLMapping);
116    
117                            if (pos == -1) {
118                                    continue;
119                            }
120    
121                            String friendlyURL = href.substring(
122                                    pos + _friendlyURLMapping.length());
123    
124                            if (friendlyURL.endsWith(StringPool.SLASH)) {
125                                    friendlyURL = friendlyURL.substring(
126                                            0, friendlyURL.length() - 1);
127                            }
128    
129                            Map<String, String> routeParameters = new HashMap<String, String>();
130    
131                            if (!_router.urlToParameters(friendlyURL, routeParameters)) {
132                                    if (_log.isWarnEnabled()) {
133                                            _log.warn(
134                                                    "No route could be found to match URL " + friendlyURL);
135                                    }
136    
137                                    continue;
138                            }
139    
140                            String title = routeParameters.get("title");
141                            String nodeName = routeParameters.get("nodeName");
142    
143                            if (Validator.isNull(title) || Validator.isNull(nodeName)) {
144                                    continue;
145                            }
146    
147                            try {
148                                    WikiNodeLocalServiceUtil.getNode(page.getGroupId(), nodeName);
149    
150                                    links.put(StringUtil.toLowerCase(title), Boolean.TRUE);
151                            }
152                            catch (NoSuchNodeException nsne) {
153                                    if (_log.isWarnEnabled()) {
154                                            _log.warn(nsne.getMessage());
155                                    }
156                            }
157                    }
158    
159                    return links;
160            }
161    
162            private static Log _log = LogFactoryUtil.getLog(HtmlEngine.class);
163    
164            private String _friendlyURLMapping;
165            private Router _router;
166    
167    }