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289 lines
14 KiB
289 lines
14 KiB
// yacysearchitem.java
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// (C) 2007 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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// first published 28.08.2007 on http://yacy.net
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//
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// This is a part of YaCy, a peer-to-peer based web search engine
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//
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// $LastChangedDate: 2006-04-02 22:40:07 +0200 (So, 02 Apr 2006) $
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// $LastChangedRevision: 1986 $
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// $LastChangedBy: orbiter $
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//
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// LICENSE
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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import java.io.UnsupportedEncodingException;
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import java.net.MalformedURLException;
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import java.net.URLEncoder;
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import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.Set;
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import java.util.TreeSet;
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import de.anomic.http.httpHeader;
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import de.anomic.kelondro.kelondroMSetTools;
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import de.anomic.kelondro.kelondroNaturalOrder;
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import de.anomic.plasma.plasmaSearchEvent;
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import de.anomic.plasma.plasmaSearchPreOrder;
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import de.anomic.plasma.plasmaSearchQuery;
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import de.anomic.plasma.plasmaSearchRankingProfile;
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import de.anomic.plasma.plasmaSnippetCache;
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import de.anomic.plasma.plasmaSwitchboard;
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import de.anomic.server.serverObjects;
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import de.anomic.server.serverSwitch;
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import de.anomic.tools.crypt;
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import de.anomic.tools.nxTools;
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import de.anomic.yacy.yacyCore;
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import de.anomic.yacy.yacyNewsPool;
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import de.anomic.yacy.yacySeed;
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import de.anomic.yacy.yacyURL;
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public class yacysearchitem {
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private static boolean col = true;
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private static final int namelength = 60;
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private static final int urllength = 120;
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private static final int MAX_TOPWORDS = 24;
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public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch env) {
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final plasmaSwitchboard sb = (plasmaSwitchboard) env;
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final serverObjects prop = new serverObjects();
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String eventID = post.get("eventID", "");
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boolean bottomline = post.get("bottomline", "false").equals("true");
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boolean rss = post.get("rss", "false").equals("true");
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boolean authenticated = sb.adminAuthenticated(header) >= 2;
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int item = post.getInt("item", -1);
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// default settings for blank item
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prop.put("content", "0");
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prop.put("rss", "0");
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prop.put("references", "0");
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prop.put("rssreferences", "0");
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prop.put("dynamic", "0");
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// find search event
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plasmaSearchEvent theSearch = plasmaSearchEvent.getEvent(eventID);
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if (theSearch == null) {
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// the event does not exist, show empty page
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return prop;
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}
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plasmaSearchQuery theQuery = theSearch.getQuery();
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plasmaSearchRankingProfile ranking = theSearch.getRanking();
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// dynamically update count values
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if (!rss) {
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prop.put("dynamic_offset", theQuery.neededResults() - theQuery.displayResults() + 1);
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prop.put("dynamic_global", theSearch.getGlobalCount());
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prop.put("dynamic_total", theSearch.getGlobalCount() + theSearch.getLocalCount());
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prop.put("dynamic_items", (item < 0) ? theQuery.neededResults() : item + 1);
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prop.put("dynamic", "1");
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}
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if (bottomline) {
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// attach the bottom line with search references (topwords)
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final Set references = theSearch.references(20);
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if (references.size() > 0) {
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// get the topwords
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final TreeSet topwords = new TreeSet(kelondroNaturalOrder.naturalOrder);
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String tmp = "";
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Iterator i = references.iterator();
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while (i.hasNext()) {
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tmp = (String) i.next();
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if (tmp.matches("[a-z]+")) {
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topwords.add(tmp);
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}
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}
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// filter out the badwords
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final TreeSet filteredtopwords = kelondroMSetTools.joinConstructive(topwords, plasmaSwitchboard.badwords);
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if (filteredtopwords.size() > 0) {
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kelondroMSetTools.excludeDestructive(topwords, plasmaSwitchboard.badwords);
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}
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// avoid stopwords being topwords
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if (env.getConfig("filterOutStopwordsFromTopwords", "true").equals("true")) {
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if ((plasmaSwitchboard.stopwords != null) && (plasmaSwitchboard.stopwords.size() > 0)) {
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kelondroMSetTools.excludeDestructive(topwords, plasmaSwitchboard.stopwords);
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}
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}
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if (rss) {
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String word;
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int hintcount = 0;
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final Iterator iter = topwords.iterator();
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while (iter.hasNext()) {
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word = (String) iter.next();
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if (word != null) {
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prop.putHTML("rssreferences_words_" + hintcount + "_word", word);
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}
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prop.put("rssreferences_words", hintcount);
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if (hintcount++ > MAX_TOPWORDS) {
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break;
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}
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}
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prop.put("rssreferences", "1");
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} else {
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String word;
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int hintcount = 0;
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final Iterator iter = topwords.iterator();
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while (iter.hasNext()) {
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word = (String) iter.next();
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if (word != null) {
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prop.putHTML("references_words_" + hintcount + "_word", word);
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prop.putHTML("references_words_" + hintcount + "_newsearch", theQuery.queryString.replace(' ', '+') + "+" + word);
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prop.put("references_words_" + hintcount + "_count", theQuery.displayResults());
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prop.put("references_words_" + hintcount + "_offset", "0");
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prop.put("references_words_" + hintcount + "_contentdom", theQuery.contentdom());
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prop.put("references_words_" + hintcount + "_resource", theQuery.searchdom());
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prop.put("references_words_" + hintcount + "_time", (theQuery.maximumTime / 1000));
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}
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prop.put("references_words", hintcount);
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if (hintcount++ > MAX_TOPWORDS) {
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break;
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}
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}
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prop.put("references", "1");
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}
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}
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return prop;
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}
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// generate result object
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plasmaSearchEvent.ResultEntry result = theSearch.oneResult(item);
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if (result == null) {
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// no content
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return prop;
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}
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if (rss) {
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// text search for rss output
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prop.put("rss", "1"); // switch on specific content
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prop.putHTML("rss_title", result.title(), true);
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prop.putHTML("rss_description", result.textSnippet().getLineRaw(), true);
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prop.putHTML("rss_link", result.urlstring(), true);
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prop.put("rss_urlhash", result.hash());
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prop.put("rss_date", plasmaSwitchboard.dateString822(result.modified()));
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return prop;
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}
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prop.put("rss", "0");
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if (theQuery.contentdom == plasmaSearchQuery.CONTENTDOM_TEXT) {
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// text search
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prop.put("content", theQuery.contentdom + 1); // switch on specific content
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prop.put("content_authorized", authenticated ? "1" : "0");
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prop.put("content_authorized_recommend", (yacyCore.newsPool.getSpecific(yacyNewsPool.OUTGOING_DB, yacyNewsPool.CATEGORY_SURFTIPP_ADD, "url", result.urlstring()) == null) ? "1" : "0");
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prop.put("content_authorized_recommend_deletelink", "/yacysearch.html?search=" + theQuery.queryString + "&Enter=Search&count=" + theQuery.displayResults() + "&offset=" + (theQuery.neededResults() - theQuery.displayResults()) + "&order=" + crypt.simpleEncode(ranking.toExternalString()) + "&resource=local&time=3&deleteref=" + result.hash() + "&urlmaskfilter=.*");
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prop.put("content_authorized_recommend_recommendlink", "/yacysearch.html?search=" + theQuery.queryString + "&Enter=Search&count=" + theQuery.displayResults() + "&offset=" + (theQuery.neededResults() - theQuery.displayResults()) + "&order=" + crypt.simpleEncode(ranking.toExternalString()) + "&resource=local&time=3&recommendref=" + result.hash() + "&urlmaskfilter=.*");
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prop.put("content_authorized_urlhash", result.hash());
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prop.putHTML("content_description", result.title());
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prop.put("content_url", result.urlstring());
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int port=result.url().getPort();
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yacyURL faviconURL;
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try {
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faviconURL = new yacyURL(result.url().getProtocol() + "://" + result.url().getHost() + ((port != -1) ? (":" + String.valueOf(port)) : "") + "/favicon.ico", null);
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} catch (MalformedURLException e1) {
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faviconURL = null;
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}
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prop.putHTML("content_faviconCode", sb.licensedURLs.aquireLicense(faviconURL)); // aquire license for favicon url loading
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prop.put("content_urlhash", result.hash());
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prop.put("content_urlhexhash", yacySeed.b64Hash2hexHash(result.hash()));
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prop.putHTML("content_urlname", nxTools.shortenURLString(result.urlname(), urllength));
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prop.put("content_date", plasmaSwitchboard.dateString(result.modified()));
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prop.put("content_ybr", plasmaSearchPreOrder.ybr(result.hash()));
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prop.putNum("content_size", result.filesize());
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TreeSet[] query = theQuery.queryWords();
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yacyURL wordURL = null;
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try {
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prop.putHTML("content_words", URLEncoder.encode(query[0].toString(),"UTF-8"));
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} catch (UnsupportedEncodingException e) {}
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prop.putHTML("content_former", theQuery.queryString);
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prop.put("content_rankingprops", result.word().toPropertyForm() + ", domLengthEstimated=" + yacyURL.domLengthEstimation(result.hash()) +
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((yacyURL.probablyRootURL(result.hash())) ? ", probablyRootURL" : "") +
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(((wordURL = yacyURL.probablyWordURL(result.hash(), query[0])) != null) ? ", probablyWordURL=" + wordURL.toNormalform(false, true) : ""));
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prop.put("content_snippet", result.textSnippet().getLineMarked(theQuery.queryHashes));
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return prop;
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}
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if (theQuery.contentdom == plasmaSearchQuery.CONTENTDOM_IMAGE) {
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// image search; shows thumbnails
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// iterate over all images in the result
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prop.put("content", theQuery.contentdom + 1); // switch on specific content
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ArrayList /* of plasmaSnippetCache.MediaSnippet */ images = result.mediaSnippets();
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if (images != null) {
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plasmaSnippetCache.MediaSnippet ms;
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yacyURL url;
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int c = 0;
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for (int i = 0; i < images.size(); i++) {
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ms = (plasmaSnippetCache.MediaSnippet) images.get(i);
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try {url = new yacyURL(ms.href, null);} catch (MalformedURLException e) {continue;}
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prop.putHTML("content_items_" + i + "_href", ms.href);
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prop.put("content_items_" + i + "_code", sb.licensedURLs.aquireLicense(url));
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prop.putHTML("content_items_" + i + "_name", shorten(ms.name, namelength));
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prop.put("content_items_" + i + "_attr", ms.attr); // attributes, here: original size of image
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c++;
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}
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prop.put("content_items", c);
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} else {
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prop.put("content_items", "0");
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}
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return prop;
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}
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if ((theQuery.contentdom == plasmaSearchQuery.CONTENTDOM_AUDIO) ||
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(theQuery.contentdom == plasmaSearchQuery.CONTENTDOM_VIDEO) ||
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(theQuery.contentdom == plasmaSearchQuery.CONTENTDOM_APP)) {
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// any other media content
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prop.put("content", theQuery.contentdom + 1); // switch on specific content
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ArrayList /* of plasmaSnippetCache.MediaSnippet */ media = result.mediaSnippets();
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if (item == 0) col = true;
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if (media != null) {
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plasmaSnippetCache.MediaSnippet ms;
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int c = 0;
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for (int i = 0; i < media.size(); i++) {
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ms = (plasmaSnippetCache.MediaSnippet) media.get(i);
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prop.putHTML("content_items_" + i + "_href", ms.href);
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prop.putHTML("content_items_" + i + "_hrefshort", nxTools.shortenURLString(ms.href, urllength));
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prop.putHTML("content_items_" + i + "_name", shorten(ms.name, namelength));
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prop.put("content_items_" + i + "_col", (col) ? "0" : "1");
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c++;
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col = !col;
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}
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prop.put("content_items", c);
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} else {
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prop.put("content_items", "0");
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}
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return prop;
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}
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return prop;
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}
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private static String shorten(String s, int length) {
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if (s.length() <= length) return s;
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int p = s.lastIndexOf('.');
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if (p < 0) return s.substring(0, length - 3) + "...";
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return s.substring(0, length - (s.length() - p) - 3) + "..." + s.substring(p);
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}
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}
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