mirror of
https://github.com/yacy/yacy_search_server.git
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6e59ca4ebf
introduced, it was also used for search facets. The generic search facets are now deduced from generic solr fields which makes jena as tool for facet semantics superfluous.
462 lines
21 KiB
Java
462 lines
21 KiB
Java
//ViewFile.java
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//-----------------------
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//part of YaCy
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//(C) by Michael Peter Christen; mc@yacy.net
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//first published on http://www.anomic.de
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//Frankfurt, Germany, 2004
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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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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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//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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//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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//you must compile this file with
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//javac -classpath .:../Classes Status.java
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//if the shell's current path is HTROOT
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import java.io.IOException;
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import java.net.MalformedURLException;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.Iterator;
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import java.util.Map;
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import net.yacy.cora.document.encoding.ASCII;
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import net.yacy.cora.document.encoding.UTF8;
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import net.yacy.cora.document.id.AnchorURL;
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import net.yacy.cora.document.id.DigestURL;
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import net.yacy.cora.document.id.MultiProtocolURL;
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import net.yacy.cora.federate.yacy.CacheStrategy;
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import net.yacy.cora.protocol.ClientIdentification;
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import net.yacy.cora.protocol.RequestHeader;
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import net.yacy.crawler.data.Cache;
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import net.yacy.crawler.retrieval.Response;
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import net.yacy.document.Condenser;
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import net.yacy.document.Document;
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import net.yacy.document.LibraryProvider;
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import net.yacy.document.Parser;
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import net.yacy.document.SentenceReader;
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import net.yacy.document.WordTokenizer;
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import net.yacy.document.parser.html.CharacterCoding;
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import net.yacy.document.parser.html.ImageEntry;
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import net.yacy.kelondro.data.meta.URIMetadataNode;
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import net.yacy.search.Switchboard;
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import net.yacy.search.index.Segment;
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import net.yacy.server.serverObjects;
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import net.yacy.server.serverSwitch;
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public class ViewFile {
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public static final int VIEW_MODE_NO_TEXT = 0;
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public static final int VIEW_MODE_AS_PLAIN_TEXT = 1;
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public static final int VIEW_MODE_AS_PARSED_TEXT = 2;
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public static final int VIEW_MODE_AS_PARSED_SENTENCES = 3;
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public static final int VIEW_MODE_AS_IFRAME_FROM_WEB = 4;
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public static final int VIEW_MODE_AS_IFRAME_FROM_CACHE = 5;
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public static final int VIEW_MODE_AS_LINKLIST = 6;
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public static final int VIEW_MODE_AS_PARSED_WORDS = 7;
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public static final int VIEW_MODE_AS_IFRAME_FROM_CITATION_REPORT = 8;
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private static final String HIGHLIGHT_CSS = "searchHighlight";
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private static final int MAX_HIGHLIGHTS = 6;
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public static serverObjects respond(final RequestHeader header, final serverObjects post, final serverSwitch env) {
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final serverObjects prop = new serverObjects();
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final Switchboard sb = (Switchboard)env;
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prop.put("topmenu", sb.getConfigBool("publicTopmenu", true) ? 1 : 0);
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if (post == null) {
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prop.putHTML("error_words", "");
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prop.put("error_vMode-sentences", "1");
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prop.put("error", "1");
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prop.put("url", "");
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prop.put("viewMode", VIEW_MODE_NO_TEXT);
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return prop;
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}
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// get segment
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Segment indexSegment = sb.index;
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final boolean authorized = sb.verifyAuthentication(header);
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if (post.containsKey("words"))
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prop.putHTML("error_words", post.get("words"));
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else {
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prop.putHTML("error_words", "");
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}
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final String viewMode = post.get("viewMode","parsed");
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prop.put("error_vMode-" + viewMode, "1");
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DigestURL url = null;
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String descr = "";
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final int wordCount = 0;
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int size = 0;
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boolean pre = false;
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// get the url hash from which the content should be loaded
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String urlHash = post.get("urlHash", post.get("urlhash", ""));
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final String urlString = post.get("url", "");
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if (urlString.length() > 0) try {
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// this call forces the peer to download web pages
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// it is therefore protected by the admin password
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if (!sb.verifyAuthentication(header)) {
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prop.authenticationRequired();
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return prop;
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}
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// define an url by post parameter
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url = new DigestURL(MultiProtocolURL.unescape(urlString));
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urlHash = ASCII.String(url.hash());
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pre = post.getBoolean("pre");
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} catch (final MalformedURLException e) {}
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URIMetadataNode urlEntry = null;
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// get the urlEntry that belongs to the url hash
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//boolean ue = urlHash.length() > 0 && indexSegment.exists(ASCII.getBytes(urlHash));
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//if (ue) Log.logInfo("ViewFile", "exists(" + urlHash + ")");
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if (urlHash.length() > 0 && (urlEntry = indexSegment.fulltext().getMetadata(ASCII.getBytes(urlHash))) == null) {
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indexSegment.fulltext().commit(true);
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}
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if (urlHash.length() > 0 && (urlEntry = indexSegment.fulltext().getMetadata(ASCII.getBytes(urlHash))) != null) {
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// get the url that belongs to the entry
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if (urlEntry == null || urlEntry.url() == null) {
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prop.put("error", "3");
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prop.put("viewMode", VIEW_MODE_NO_TEXT);
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return prop;
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}
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url = urlEntry.url();
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descr = urlEntry.dc_title();
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//urlEntry.wordCount();
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size = urlEntry.size();
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pre = urlEntry.flags().get(Condenser.flag_cat_indexof);
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}
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prop.put("error_inurldb", urlEntry == null ? 0 : 1);
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if (url == null) {
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prop.put("error", "1");
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prop.put("viewMode", VIEW_MODE_NO_TEXT);
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prop.put("url", "");
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return prop;
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}
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prop.put("url", url.toNormalform(true));
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// loading the resource content as byte array
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prop.put("error_incache", Cache.has(url.hash()) ? 1 : 0);
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Response response = null;
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try {
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ClientIdentification.Agent agent = ClientIdentification.getAgent(post.get("agentName", ClientIdentification.yacyInternetCrawlerAgentName));
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response = sb.loader.load(sb.loader.request(url, true, false), authorized ? CacheStrategy.IFEXIST : CacheStrategy.CACHEONLY, Integer.MAX_VALUE, null, agent);
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} catch (final IOException e) {
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prop.put("error", "4");
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prop.put("error_errorText", "error loading resource: " + e.getMessage());
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prop.put("viewMode", VIEW_MODE_NO_TEXT);
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return prop;
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}
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if (response == null) {
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prop.put("error", "4");
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prop.put("error_errorText", "No resource available");
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prop.put("viewMode", VIEW_MODE_NO_TEXT);
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return prop;
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}
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final String[] wordArray = wordArray(post.get("words", null));
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final String ext = MultiProtocolURL.getFileExtension(url.getFileName());
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if (viewMode.equals("plain")) {
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// TODO: how to handle very large files here ?
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String content;
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try {
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content = UTF8.String(response.getContent());
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} catch (final Exception e) {
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prop.put("error", "4");
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prop.putHTML("error_errorText", e.getMessage());
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prop.put("viewMode", VIEW_MODE_NO_TEXT);
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return prop;
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}
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prop.put("error", "0");
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prop.put("viewMode", VIEW_MODE_AS_PLAIN_TEXT);
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prop.put("viewMode_plainText", markup(wordArray, content).replaceAll("\n", "<br />").replaceAll("\t", " "));
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} else if (viewMode.equals("iframeWeb")) {
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prop.put("viewMode", VIEW_MODE_AS_IFRAME_FROM_WEB);
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prop.put("viewMode_url", url.toNormalform(true));
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} else if (viewMode.equals("iframeCache")) {
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prop.put("viewMode", VIEW_MODE_AS_IFRAME_FROM_CACHE);
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prop.put("viewMode_png", 0);
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prop.put("viewMode_html", 0);
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if (ext.length() > 0 && "jpg.jpeg.png.gif".indexOf(ext) >= 0) {
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prop.put("viewMode_png", 1);
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prop.put("viewMode_png_url", url.toNormalform(true));
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} else {
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prop.put("viewMode_html", 1);
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prop.put("viewMode_html_url", url.toNormalform(true));
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}
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} else if (viewMode.equals("iframeCitations")) {
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prop.put("viewMode", VIEW_MODE_AS_IFRAME_FROM_CITATION_REPORT);
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prop.put("viewMode_url", url.toNormalform(true));
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} else if (viewMode.equals("parsed") || viewMode.equals("sentences") || viewMode.equals("words") || viewMode.equals("links")) {
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// parsing the resource content
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Document document = null;
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try {
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document = Document.mergeDocuments(response.url(), response.getMimeType(), response.parse());
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if (document == null) {
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prop.put("error", "5");
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prop.put("error_errorText", "Unknown error");
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prop.put("viewMode", VIEW_MODE_NO_TEXT);
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return prop;
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}
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} catch (final Parser.Failure e) {
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prop.put("error", "5");
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prop.putHTML("error_errorText", e.getMessage());
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prop.put("viewMode", VIEW_MODE_NO_TEXT);
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return prop;
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}
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if (viewMode.equals("parsed")) {
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final String content = document.getTextString();
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// content = wikiCode.replaceHTML(content); // added by Marc Nause
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prop.put("viewMode", VIEW_MODE_AS_PARSED_TEXT);
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prop.put("viewMode_title", document.dc_title());
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prop.put("viewMode_creator", document.dc_creator());
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prop.put("viewMode_subject", document.dc_subject(','));
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prop.put("viewMode_description", document.dc_description().length == 0 ? new String[]{""} : document.dc_description());
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prop.put("viewMode_publisher", document.dc_publisher());
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prop.put("viewMode_format", document.dc_format());
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prop.put("viewMode_identifier", document.dc_identifier());
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prop.put("viewMode_source", url.toString());
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prop.put("viewMode_lat", document.lat());
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prop.put("viewMode_lon", document.lon());
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prop.put("viewMode_parsedText", markup(wordArray, content).replaceAll("\n", "<br />").replaceAll("\t", " "));
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} else if (viewMode.equals("sentences")) {
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prop.put("viewMode", VIEW_MODE_AS_PARSED_SENTENCES);
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final Collection<StringBuilder> sentences = document.getSentences(pre);
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boolean dark = true;
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int i = 0;
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String sentence;
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if (sentences != null) {
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// Search word highlighting
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for (final StringBuilder s: sentences) {
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sentence = s.toString();
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if (sentence.trim().length() > 0) {
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prop.put("viewMode_sentences_" + i + "_nr", i + 1);
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prop.put("viewMode_sentences_" + i + "_text", markup(wordArray, sentence));
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prop.put("viewMode_sentences_" + i + "_dark", dark ? "1" : "0");
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dark = !dark;
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i++;
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}
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}
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}
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prop.put("viewMode_sentences", i);
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} else if (viewMode.equals("words")) {
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prop.put("viewMode", VIEW_MODE_AS_PARSED_WORDS);
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final Collection<StringBuilder> sentences = document.getSentences(pre);
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boolean dark = true;
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int i = 0;
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String sentence;
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StringBuilder token;
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if (sentences != null) {
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// Search word highlighting
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for (final StringBuilder s: sentences) {
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sentence = s.toString();
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WordTokenizer tokens = new WordTokenizer(new SentenceReader(sentence), LibraryProvider.dymLib);
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try {
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while (tokens.hasMoreElements()) {
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token = tokens.nextElement();
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if (token.length() > 0) {
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prop.put("viewMode_words_" + i + "_nr", i + 1);
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prop.put("viewMode_words_" + i + "_word", token.toString());
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prop.put("viewMode_words_" + i + "_dark", dark ? "1" : "0");
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dark = !dark;
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i++;
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}
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}
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} finally {
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tokens.close();
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tokens = null;
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}
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}
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}
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prop.put("viewMode_words", i);
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} else if (viewMode.equals("links")) {
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prop.put("viewMode", VIEW_MODE_AS_LINKLIST);
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boolean dark = true;
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int i = 0;
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i += putMediaInfo(prop, wordArray, i, document.getVideolinks(), "video", (i % 2 == 0));
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i += putMediaInfo(prop, wordArray, i, document.getAudiolinks(), "audio", (i % 2 == 0));
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dark = (i % 2 == 0);
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final Map<AnchorURL, ImageEntry> ts = document.getImages();
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final Iterator<ImageEntry> tsi = ts.values().iterator();
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ImageEntry entry;
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while (tsi.hasNext()) {
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entry = tsi.next();
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prop.put("viewMode_links_" + i + "_nr", i);
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prop.put("viewMode_links_" + i + "_dark", dark ? "1" : "0");
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prop.put("viewMode_links_" + i + "_type", "image");
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prop.put("viewMode_links_" + i + "_text", (entry.alt().isEmpty()) ? " " : markup(wordArray, entry.alt()));
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prop.put("viewMode_links_" + i + "_url", entry.url().toNormalform(true));
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prop.put("viewMode_links_" + i + "_link", markup(wordArray, entry.url().toNormalform(true)));
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if (entry.width() > 0 && entry.height() > 0) {
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prop.put("viewMode_links_" + i + "_rel", entry.width() + "x" + entry.height() + " Pixel");
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} else {
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prop.put("viewMode_links_" + i + "_rel", "");
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}
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prop.put("viewMode_links_" + i + "_name", "");
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dark = !dark;
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i++;
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}
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i += putMediaInfo(prop, wordArray, i, document.getApplinks(), "app", (i % 2 == 0));
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i += putMediaInfo(prop, wordArray, i, document.getHyperlinks(), "link", (i % 2 == 0));
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prop.put("viewMode_links", i);
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}
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if (document != null) document.close();
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}
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prop.put("error", "0");
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prop.put("error_url", url.toNormalform(true));
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prop.put("error_hash", urlHash);
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prop.put("error_wordCount", wordCount);
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prop.putHTML("error_desc", (descr.isEmpty()) ? " " : descr);
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prop.putNum("error_size", size);
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prop.put("error_mimeTypeAvailable", (response.getMimeType() == null) ? "0" : "1");
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prop.put("error_mimeTypeAvailable_mimeType", response.getMimeType());
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if (urlEntry == null) {
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prop.put("error_referrerHash", "");
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prop.put("error_moddate", "");
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prop.put("error_loaddate", "");
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prop.put("error_freshdate", "");
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prop.put("error_hosthash", "");
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prop.putHTML("error_dc_creator", "");
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prop.putHTML("error_dc_publisher", "");
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prop.putHTML("error_dc_subject", "");
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prop.put("error_md5", "");
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prop.put("error_lat", "");
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prop.put("error_lon", "");
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prop.put("error_doctype", "");
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prop.put("error_language", "");
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prop.put("error_flags", "");
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prop.put("error_wordCount", "");
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prop.put("error_llocal", "");
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prop.put("error_lother", "");
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prop.put("error_limage", "");
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prop.put("error_laudio", "");
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prop.put("error_lvideo", "");
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prop.put("error_lapp", "");
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prop.put("error_collections", "");
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} else {
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prop.put("error_referrerHash", urlEntry.referrerHash());
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prop.put("error_moddate", urlEntry.moddate());
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prop.put("error_loaddate", urlEntry.loaddate());
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prop.put("error_freshdate", urlEntry.freshdate());
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prop.put("error_hosthash", urlEntry.hosthash());
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prop.putHTML("error_dc_creator", urlEntry.dc_creator());
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prop.putHTML("error_dc_publisher", urlEntry.dc_publisher());
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prop.putHTML("error_dc_subject", urlEntry.dc_subject());
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prop.put("error_md5", urlEntry.md5());
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prop.put("error_lat", urlEntry.lat());
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prop.put("error_lon", urlEntry.lon());
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prop.put("error_doctype", Response.doctype2mime(ext, urlEntry.doctype()));
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prop.put("error_language", urlEntry.language());
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prop.put("error_flags", urlEntry.flags().toString());
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prop.put("error_wordCount", urlEntry.wordCount());
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prop.put("error_llocal", urlEntry.llocal());
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prop.put("error_lother", urlEntry.lother());
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prop.put("error_limage", urlEntry.limage());
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prop.put("error_laudio", urlEntry.laudio());
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prop.put("error_lvideo", urlEntry.lvideo());
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prop.put("error_lapp", urlEntry.lapp());
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prop.put("error_collections", Arrays.toString(urlEntry.collections()));
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}
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return prop;
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}
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private static final String[] wordArray(String words) {
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String[] w = new String[0];
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if (words == null || words.isEmpty()) return w;
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if (words.length() > 1 && words.charAt(0) == '[' && words.charAt(words.length() - 1) == ']') {
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words = words.substring(1, words.length() - 1);
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}
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words = UTF8.decodeURL(words);
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if (words.indexOf(' ',0) >= 0) return words.split(" ");
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if (words.indexOf(',',0) >= 0) return words.split(",");
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if (words.indexOf('+',0) >= 0) return words.split("\\+");
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w = new String[1];
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w[0] = words;
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return w;
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}
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private static final String markup(final String[] wordArray, String message) {
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message = CharacterCoding.unicode2html(message, true);
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if (wordArray != null) {
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int j = 0;
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for (String currentWord : wordArray) {
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currentWord = currentWord.trim();
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// TODO: replace upper-/lowercase words as well
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message = message.replaceAll(currentWord,
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"<span class=\"" + HIGHLIGHT_CSS + ((j++ % MAX_HIGHLIGHTS) + 1) + "\">" +
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currentWord +
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"</span>");
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}
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}
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return message;
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}
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private static int putMediaInfo(
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final serverObjects prop,
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final String[] wordArray,
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int c,
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final Map<AnchorURL, String> media,
|
|
final String type,
|
|
boolean dark) {
|
|
int i = 0;
|
|
for (final Map.Entry<AnchorURL, String> entry : media.entrySet()) {
|
|
final String name = entry.getKey().getNameProperty(); // the name attribute
|
|
final String rel = entry.getKey().getRelProperty(); // the rel-attribute
|
|
final String text = entry.getKey().getTextProperty(); // the text between the <a></a> tag
|
|
|
|
prop.put("viewMode_links_" + c + "_nr", c);
|
|
prop.put("viewMode_links_" + c + "_dark", ((dark) ? 1 : 0));
|
|
prop.putHTML("viewMode_links_" + c + "_type", type);
|
|
prop.put("viewMode_links_" + c + "_text", text);
|
|
prop.put("viewMode_links_" + c + "_link", markup(wordArray, entry.getKey().toNormalform(true)));
|
|
prop.put("viewMode_links_" + c + "_url", entry.getKey().toNormalform(true));
|
|
prop.put("viewMode_links_" + c + "_rel", rel);
|
|
prop.put("viewMode_links_" + c + "_name", name);
|
|
dark = !dark;
|
|
c++;
|
|
i++;
|
|
}
|
|
return i;
|
|
}
|
|
|
|
}
|