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818 lines
32 KiB
818 lines
32 KiB
//Document.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, 2005
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//
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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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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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package net.yacy.document;
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import java.io.BufferedInputStream;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStreamWriter;
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import java.io.UnsupportedEncodingException;
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import java.io.Writer;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Map;
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import java.util.Properties;
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import java.util.Set;
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import java.util.TreeSet;
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import net.yacy.cora.date.ISO8601Formatter;
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import net.yacy.cora.document.MultiProtocolURI;
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import net.yacy.cora.document.UTF8;
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import net.yacy.document.parser.html.ContentScraper;
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import net.yacy.document.parser.html.ImageEntry;
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import net.yacy.kelondro.logging.Log;
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import net.yacy.kelondro.util.ByteBuffer;
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import net.yacy.kelondro.util.FileUtils;
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public class Document {
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private final MultiProtocolURI source; // the source url
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private final String mimeType; // mimeType as taken from http header
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private final String charset; // the charset of the document
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private final List<String> keywords; // most resources provide a keyword field
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private StringBuilder title; // a document title, taken from title or h1 tag; shall appear as headline of search result
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private final StringBuilder creator; // author or copyright
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private final String publisher; // publisher
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private final List<String> sections; // if present: more titles/headlines appearing in the document
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private final StringBuilder description; // an abstract, if present: short content description
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private Object text; // the clear text, all that is visible
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private final Map<MultiProtocolURI, Properties> anchors; // all links embedded as clickeable entities (anchor tags)
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private final Map<MultiProtocolURI, String> rss; // all embedded rss feeds
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private final Map<MultiProtocolURI, ImageEntry> images; // all visible pictures in document
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// the anchors and images - Maps are URL-to-EntityDescription mappings.
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// The EntityDescription appear either as visible text in anchors or as alternative
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// text in image tags.
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private Map<MultiProtocolURI, String> hyperlinks, audiolinks, videolinks, applinks, inboundlinks, outboundlinks;
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private Map<String, String> emaillinks;
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private MultiProtocolURI favicon;
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private boolean resorted;
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private final Set<String> languages;
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private final boolean indexingDenied;
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private final float lon, lat;
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private final Object parserObject; // the source object that was used to create the Document
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public Document(final MultiProtocolURI location, final String mimeType, final String charset,
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final Object parserObject,
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final Set<String> languages,
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final String[] keywords, final String title, final String author, final String publisher,
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final String[] sections, final String abstrct,
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final float lon, final float lat,
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final Object text,
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final Map<MultiProtocolURI, Properties> anchors,
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final Map<MultiProtocolURI, String> rss,
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final Map<MultiProtocolURI, ImageEntry> images,
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final boolean indexingDenied) {
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this.source = location;
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this.mimeType = (mimeType == null) ? "application/octet-stream" : mimeType;
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this.charset = charset;
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this.parserObject = parserObject;
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this.keywords = (keywords == null) ? new LinkedList<String>() : Arrays.asList(keywords);
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this.title = (title == null) ? new StringBuilder(0) : new StringBuilder(title);
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this.creator = (author == null) ? new StringBuilder(0) : new StringBuilder(author);
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this.sections = (sections == null) ? new LinkedList<String>() : Arrays.asList(sections);
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this.description = (abstrct == null) ? new StringBuilder(0) : new StringBuilder(abstrct);
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this.lon = lon;
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this.lat = lat;
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this.anchors = (anchors == null) ? new HashMap<MultiProtocolURI, Properties>(0) : anchors;
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this.rss = (rss == null) ? new HashMap<MultiProtocolURI, String>(0) : rss;
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this.images = (images == null) ? new HashMap<MultiProtocolURI, ImageEntry>() : images;
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this.publisher = publisher;
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this.hyperlinks = null;
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this.audiolinks = null;
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this.videolinks = null;
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this.applinks = null;
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this.emaillinks = null;
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this.resorted = false;
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this.inboundlinks = null;
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this.outboundlinks = null;
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this.languages = languages;
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this.indexingDenied = indexingDenied;
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this.text = text == null ? new ByteArrayOutputStream() : text;
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}
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public Object getParserObject() {
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return this.parserObject;
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}
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public Set<String> getContentLanguages() {
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return this.languages;
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}
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/**
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* compute a set of languages that this document contains
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* the language is not computed using a statistical analysis of the content, only from given metadata that came with the document
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* if there are several languages defined in the document, the TLD is taken to check which one should be picked
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* If there is no metadata at all, null is returned
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* @return a string with a language name using the alpha-2 code of ISO 639
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*/
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public String dc_language() {
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if (this.languages == null) return null;
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if (this.languages.isEmpty()) return null;
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if (this.languages.size() == 1) return this.languages.iterator().next();
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if (this.languages.contains(this.source.language())) return this.source.language();
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// now we are confused: the declared languages differ all from the TLD
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// just pick one of the languages that we have
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return this.languages.iterator().next();
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}
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/*
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DC according to rfc 5013
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* dc_title
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* dc_creator
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* dc_subject
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* dc_description
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* dc_publisher
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dc_contributor
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dc_date
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dc_type
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* dc_format
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* dc_identifier
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* dc_source
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dc_language
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dc_relation
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dc_coverage
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dc_rights
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*/
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public String dc_title() {
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return (this.title == null) ? "" : this.title.toString();
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}
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public void setTitle(final String title) {
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this.title = new StringBuilder(title);
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}
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public String dc_creator() {
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return (this.creator == null) ? "" : this.creator.toString();
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}
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public String[] dc_subject() {
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// sort out doubles and empty words
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final TreeSet<String> hs = new TreeSet<String>();
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String s;
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for (int i = 0; i < this.keywords.size(); i++) {
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if (this.keywords.get(i) == null) continue;
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s = (this.keywords.get(i)).trim();
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if (s.length() > 0) hs.add(s.toLowerCase());
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}
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final String[] t = new String[hs.size()];
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int i = 0;
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for (final String u: hs) t[i++] = u;
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return t;
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}
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public String dc_subject(final char separator) {
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final String[] t = dc_subject();
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if (t.length == 0) return "";
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// generate a new list
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final StringBuilder sb = new StringBuilder(t.length * 8);
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for (final String s: t) sb.append(s).append(separator);
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return sb.substring(0, sb.length() - 1);
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}
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public String dc_description() {
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if (this.description == null)
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return dc_title();
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return this.description.toString();
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}
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public String dc_publisher() {
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return this.publisher == null ? "" : this.publisher;
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}
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public String dc_format() {
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return this.mimeType;
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}
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public String dc_identifier() {
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return this.source.toNormalform(true, false);
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}
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public MultiProtocolURI dc_source() {
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return this.source;
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}
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/**
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* @return the supposed charset of this document or <code>null</code> if unknown
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*/
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public String getCharset() {
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return this.charset;
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}
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public String[] getSectionTitles() {
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if (this.sections == null) {
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return new String[] { dc_title() };
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}
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return this.sections.toArray(new String[this.sections.size()]);
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}
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public InputStream getText() {
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try {
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if (this.text == null) return new ByteArrayInputStream(UTF8.getBytes(""));
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if (this.text instanceof String) {
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//return new StreamReader((String) this.text);
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return new ByteArrayInputStream(UTF8.getBytes(((String) this.text)));
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} else if (this.text instanceof InputStream) {
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return (InputStream) this.text;
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} else if (this.text instanceof File) {
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return new BufferedInputStream(new FileInputStream((File)this.text));
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} else if (this.text instanceof byte[]) {
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return new ByteArrayInputStream((byte[]) this.text);
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} else if (this.text instanceof ByteArrayOutputStream) {
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return new ByteArrayInputStream(((ByteArrayOutputStream) this.text).toByteArray());
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}
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assert false : this.text.getClass().toString();
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return null;
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} catch (final Exception e) {
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Log.logException(e);
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}
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return new ByteArrayInputStream(UTF8.getBytes(""));
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}
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public byte[] getTextBytes() {
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try {
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if (this.text == null) return new byte[0];
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if (this.text instanceof String) {
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return UTF8.getBytes((String) this.text);
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} else if (this.text instanceof InputStream) {
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return FileUtils.read((InputStream) this.text);
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} else if (this.text instanceof File) {
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return FileUtils.read((File) this.text);
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} else if (this.text instanceof byte[]) {
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return (byte[]) this.text;
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} else if (this.text instanceof ByteArrayOutputStream) {
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return ((ByteArrayOutputStream) this.text).toByteArray();
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}
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assert false : this.text.getClass().toString();
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return null;
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} catch (final Exception e) {
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Log.logException(e);
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}
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return new byte[0];
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}
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public long getTextLength() {
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try {
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if (this.text == null) return -1;
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if (this.text instanceof String) {
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return ((String) this.text).length();
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} else if (this.text instanceof InputStream) {
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return ((InputStream) this.text).available();
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} else if (this.text instanceof File) {
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return ((File) this.text).length();
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} else if (this.text instanceof byte[]) {
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return ((byte[]) this.text).length;
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} else if (this.text instanceof ByteArrayOutputStream) {
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return ((ByteArrayOutputStream) this.text).size();
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}
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assert false : this.text.getClass().toString();
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return -1;
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} catch (final Exception e) {
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Log.logException(e);
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}
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return -1;
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}
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public List<StringBuilder> getSentences(final boolean pre) {
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return getSentences(pre, getText());
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}
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public static List<StringBuilder> getSentences(final boolean pre, final InputStream text) {
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if (text == null) return null;
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final SentenceReader e = new SentenceReader(text);
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e.pre(pre);
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final List<StringBuilder> sentences = new ArrayList<StringBuilder>();
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while (e.hasNext()) {
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sentences.add(e.next());
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}
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return sentences;
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}
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public List<String> getKeywords() {
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return this.keywords;
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}
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public Map<MultiProtocolURI, Properties> getAnchors() {
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// returns all links embedded as anchors (clickeable entities)
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// this is a url(String)/text(String) map
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return this.anchors;
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}
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public Map<MultiProtocolURI, String> getRSS() {
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// returns all links embedded as anchors (clickeable entities)
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// this is a url(String)/text(String) map
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return this.rss;
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}
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// the next three methods provide a calculated view on the getAnchors/getImages:
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public Map<MultiProtocolURI, String> getHyperlinks() {
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// this is a subset of the getAnchor-set: only links to other hyperrefs
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if (!this.resorted) resortLinks();
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return this.hyperlinks;
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}
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public Map<MultiProtocolURI, String> getAudiolinks() {
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if (!this.resorted) resortLinks();
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return this.audiolinks;
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}
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public Map<MultiProtocolURI, String> getVideolinks() {
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if (!this.resorted) resortLinks();
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return this.videolinks;
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}
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public Map<MultiProtocolURI, ImageEntry> getImages() {
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// returns all links enbedded as pictures (visible in document)
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// this resturns a htmlFilterImageEntry collection
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if (!this.resorted) resortLinks();
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return this.images;
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}
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public Map<MultiProtocolURI, String> getApplinks() {
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if (!this.resorted) resortLinks();
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return this.applinks;
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}
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public Map<String, String> getEmaillinks() {
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// this is part of the getAnchor-set: only links to email addresses
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if (!this.resorted) resortLinks();
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return this.emaillinks;
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}
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public float lon() {
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return this.lon;
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}
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public float lat() {
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return this.lat;
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}
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private void resortLinks() {
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if (this.resorted) return;
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synchronized (this) {
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if (this.resorted) return;
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// extract hyperlinks, medialinks and emaillinks from anchorlinks
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MultiProtocolURI url;
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String u;
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int extpos, qpos;
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String ext = null;
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final String thishost = this.source.getHost();
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this.inboundlinks = new HashMap<MultiProtocolURI, String>();
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this.outboundlinks = new HashMap<MultiProtocolURI, String>();
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this.hyperlinks = new HashMap<MultiProtocolURI, String>();
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this.videolinks = new HashMap<MultiProtocolURI, String>();
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this.audiolinks = new HashMap<MultiProtocolURI, String>();
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this.applinks = new HashMap<MultiProtocolURI, String>();
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this.emaillinks = new HashMap<String, String>();
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final Map<MultiProtocolURI, ImageEntry> collectedImages = new HashMap<MultiProtocolURI, ImageEntry>(); // this is a set that is collected now and joined later to the imagelinks
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for (final Map.Entry<MultiProtocolURI, ImageEntry> entry: collectedImages.entrySet()) {
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if (entry.getKey().getHost().equals(thishost)) this.inboundlinks.put(entry.getKey(), "image"); else this.outboundlinks.put(entry.getKey(), "image");
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}
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for (final Map.Entry<MultiProtocolURI, Properties> entry: this.anchors.entrySet()) {
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url = entry.getKey();
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if (url == null) continue;
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final boolean noindex = entry.getValue().getProperty("rel", "").toLowerCase().indexOf("noindex") >= 0;
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final boolean nofollow = entry.getValue().getProperty("rel", "").toLowerCase().indexOf("nofollow") >= 0;
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if ((thishost == null && url.getHost() == null) ||
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((thishost != null && url.getHost() != null) &&
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(url.getHost().endsWith(thishost) ||
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(thishost.startsWith("www.") && url.getHost().endsWith(thishost.substring(4)))))) {
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this.inboundlinks.put(url, "anchor" + (noindex ? " noindex" : "") + (nofollow ? " nofollow" : ""));
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} else {
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this.outboundlinks.put(url, "anchor" + (noindex ? " noindex" : "") + (nofollow ? " nofollow" : ""));
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}
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u = url.toNormalform(true, false);
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final String name = entry.getValue().getProperty("name", "");
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if (u.startsWith("mailto:")) {
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this.emaillinks.put(u.substring(7), name);
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} else {
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extpos = u.lastIndexOf('.');
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if (extpos > 0) {
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if (((qpos = u.indexOf('?')) >= 0) && (qpos > extpos)) {
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ext = u.substring(extpos + 1, qpos).toLowerCase();
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} else {
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ext = u.substring(extpos + 1).toLowerCase();
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}
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if (Classification.isMediaExtension(ext)) {
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// this is not a normal anchor, its a media link
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if (Classification.isImageExtension(ext)) {
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ContentScraper.addImage(collectedImages, new ImageEntry(url, name, -1, -1, -1));
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}
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else if (Classification.isAudioExtension(ext)) this.audiolinks.put(url, name);
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else if (Classification.isVideoExtension(ext)) this.videolinks.put(url, name);
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else if (Classification.isApplicationExtension(ext)) this.applinks.put(url, name);
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}
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}
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// in any case we consider this as a link and let the parser decide if that link can be followed
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this.hyperlinks.put(url, name);
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}
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}
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// add image links that we collected from the anchors to the image map
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ContentScraper.addAllImages(this.images, collectedImages);
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// expand the hyperlinks:
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// we add artificial hyperlinks to the hyperlink set
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// that can be calculated from given hyperlinks and imagelinks
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this.hyperlinks.putAll(allReflinks(this.images.values()));
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this.hyperlinks.putAll(allReflinks(this.audiolinks.keySet()));
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this.hyperlinks.putAll(allReflinks(this.videolinks.keySet()));
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this.hyperlinks.putAll(allReflinks(this.applinks.keySet()));
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/*
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hyperlinks.putAll(allSubpaths(hyperlinks.keySet()));
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hyperlinks.putAll(allSubpaths(images.values()));
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hyperlinks.putAll(allSubpaths(audiolinks.keySet()));
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hyperlinks.putAll(allSubpaths(videolinks.keySet()));
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hyperlinks.putAll(allSubpaths(applinks.keySet()));
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*/
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// don't do this again
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this.resorted = true;
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}
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}
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public static Map<MultiProtocolURI, String> allSubpaths(final Collection<?> links) {
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// links is either a Set of Strings (urls) or a Set of
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// htmlFilterImageEntries
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final Set<String> h = new HashSet<String>();
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Iterator<?> i = links.iterator();
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Object o;
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MultiProtocolURI url;
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String u;
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int pos;
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|
int l;
|
|
while (i.hasNext())
|
|
try {
|
|
o = i.next();
|
|
if (o instanceof MultiProtocolURI) url = (MultiProtocolURI) o;
|
|
else if (o instanceof String) url = new MultiProtocolURI((String) o);
|
|
else if (o instanceof ImageEntry) url = ((ImageEntry) o).url();
|
|
else {
|
|
assert false;
|
|
continue;
|
|
}
|
|
u = url.toNormalform(true, true);
|
|
if (u.endsWith("/"))
|
|
u = u.substring(0, u.length() - 1);
|
|
pos = u.lastIndexOf('/');
|
|
while (pos > 8) {
|
|
l = u.length();
|
|
u = u.substring(0, pos + 1);
|
|
h.add(u);
|
|
u = u.substring(0, pos);
|
|
assert (u.length() < l) : "u = " + u;
|
|
pos = u.lastIndexOf('/');
|
|
}
|
|
} catch (final MalformedURLException e) { }
|
|
// now convert the strings to yacyURLs
|
|
i = h.iterator();
|
|
final Map<MultiProtocolURI, String> v = new HashMap<MultiProtocolURI, String>();
|
|
while (i.hasNext()) {
|
|
u = (String) i.next();
|
|
try {
|
|
url = new MultiProtocolURI(u);
|
|
v.put(url, "sub");
|
|
} catch (final MalformedURLException e) {
|
|
}
|
|
}
|
|
return v;
|
|
}
|
|
|
|
public static Map<MultiProtocolURI, String> allReflinks(final Collection<?> links) {
|
|
// links is either a Set of Strings (with urls) or
|
|
// htmlFilterImageEntries
|
|
// we find all links that are part of a reference inside a url
|
|
final Map<MultiProtocolURI, String> v = new HashMap<MultiProtocolURI, String>();
|
|
final Iterator<?> i = links.iterator();
|
|
Object o;
|
|
MultiProtocolURI url = null;
|
|
String u;
|
|
int pos;
|
|
loop: while (i.hasNext())
|
|
try {
|
|
o = i.next();
|
|
if (o instanceof MultiProtocolURI)
|
|
url = (MultiProtocolURI) o;
|
|
else if (o instanceof String)
|
|
url = new MultiProtocolURI((String) o);
|
|
else if (o instanceof ImageEntry)
|
|
url = ((ImageEntry) o).url();
|
|
else {
|
|
assert false;
|
|
continue loop;
|
|
}
|
|
if (url == null) continue loop;
|
|
u = url.toNormalform(true, true);
|
|
if ((pos = u.toLowerCase().indexOf("http://", 7)) > 0) {
|
|
i.remove();
|
|
u = u.substring(pos);
|
|
while ((pos = u.toLowerCase().indexOf("http://", 7)) > 0)
|
|
u = u.substring(pos);
|
|
url = new MultiProtocolURI(u);
|
|
if (!(v.containsKey(url)))
|
|
v.put(url, "ref");
|
|
continue loop;
|
|
}
|
|
if ((pos = u.toLowerCase().indexOf("/www.", 7)) > 0) {
|
|
i.remove();
|
|
u = "http:/" + u.substring(pos);
|
|
while ((pos = u.toLowerCase().indexOf("/www.", 7)) > 0)
|
|
u = "http:/" + u.substring(pos);
|
|
url = new MultiProtocolURI(u);
|
|
if (!(v.containsKey(url)))
|
|
v.put(url, "ref");
|
|
continue loop;
|
|
}
|
|
} catch (final MalformedURLException e) {
|
|
}
|
|
return v;
|
|
}
|
|
|
|
public void addSubDocuments(final Document[] docs) throws IOException {
|
|
for (final Document doc: docs) {
|
|
this.sections.addAll(Arrays.asList(doc.getSectionTitles()));
|
|
|
|
if (this.title.length() > 0) this.title.append('\n');
|
|
this.title.append(doc.dc_title());
|
|
|
|
this.keywords.addAll(doc.getKeywords());
|
|
|
|
if (this.description.length() > 0) this.description.append('\n');
|
|
this.description.append(doc.dc_description());
|
|
|
|
if (!(this.text instanceof ByteArrayOutputStream)) {
|
|
this.text = new ByteArrayOutputStream();
|
|
}
|
|
FileUtils.copy(doc.getText(), (ByteArrayOutputStream) this.text);
|
|
|
|
this.anchors.putAll(doc.getAnchors());
|
|
this.rss.putAll(doc.getRSS());
|
|
ContentScraper.addAllImages(this.images, doc.getImages());
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return the {@link URL} to the favicon that belongs to the document
|
|
*/
|
|
public MultiProtocolURI getFavicon() {
|
|
return this.favicon;
|
|
}
|
|
|
|
/**
|
|
* @param faviconURL the {@link URL} to the favicon that belongs to the document
|
|
*/
|
|
public void setFavicon(final MultiProtocolURI faviconURL) {
|
|
this.favicon = faviconURL;
|
|
}
|
|
|
|
public int inboundLinkCount() {
|
|
if (this.inboundlinks == null) resortLinks();
|
|
return (this.inboundlinks == null) ? 0 : this.inboundlinks.size();
|
|
}
|
|
|
|
public int outboundLinkCount() {
|
|
if (this.outboundlinks == null) resortLinks();
|
|
return (this.outboundlinks == null) ? 0 : this.outboundlinks.size();
|
|
}
|
|
|
|
public int inboundLinkNoindexCount() {
|
|
if (this.inboundlinks == null) resortLinks();
|
|
if (this.inboundlinks == null) return 0;
|
|
int c = 0;
|
|
for (final String tag: this.inboundlinks.values()) {
|
|
if (tag.contains("noindex")) c++;
|
|
}
|
|
return c;
|
|
}
|
|
|
|
public int outboundLinkNoindexCount() {
|
|
if (this.outboundlinks == null) resortLinks();
|
|
if (this.outboundlinks == null) return 0;
|
|
int c = 0;
|
|
for (final String tag: this.outboundlinks.values()) {
|
|
if (tag.contains("noindex")) c++;
|
|
}
|
|
return c;
|
|
}
|
|
|
|
public Set<MultiProtocolURI> inboundLinks() {
|
|
if (this.inboundlinks == null) resortLinks();
|
|
return (this.inboundlinks == null) ? null : this.inboundlinks.keySet();
|
|
}
|
|
|
|
public Set<MultiProtocolURI> outboundLinks() {
|
|
if (this.outboundlinks == null) resortLinks();
|
|
return (this.outboundlinks == null) ? null : this.outboundlinks.keySet();
|
|
}
|
|
|
|
public boolean indexingDenied() {
|
|
return this.indexingDenied;
|
|
}
|
|
|
|
public void writeXML(final Writer os, final Date date) throws IOException {
|
|
os.write("<record>\n");
|
|
final String title = dc_title();
|
|
if (title != null && title.length() > 0) os.write("<dc:title><![CDATA[" + title + "]]></dc:title>\n");
|
|
os.write("<dc:identifier>" + dc_identifier() + "</dc:identifier>\n");
|
|
final String creator = dc_creator();
|
|
if (creator != null && creator.length() > 0) os.write("<dc:creator><![CDATA[" + creator + "]]></dc:creator>\n");
|
|
final String publisher = dc_publisher();
|
|
if (publisher != null && publisher.length() > 0) os.write("<dc:publisher><![CDATA[" + publisher + "]]></dc:publisher>\n");
|
|
final String subject = this.dc_subject(';');
|
|
if (subject != null && subject.length() > 0) os.write("<dc:subject><![CDATA[" + subject + "]]></dc:subject>\n");
|
|
if (this.text != null) {
|
|
os.write("<dc:description><![CDATA[");
|
|
final byte[] buffer = new byte[1000];
|
|
int c = 0;
|
|
final InputStream is = getText();
|
|
while ((c = is.read(buffer)) > 0) os.write(UTF8.String(buffer, 0, c));
|
|
is.close();
|
|
os.write("]]></dc:description>\n");
|
|
}
|
|
final String language = dc_language();
|
|
if (language != null && language.length() > 0) os.write("<dc:language>" + dc_language() + "</dc:language>\n");
|
|
os.write("<dc:date>" + ISO8601Formatter.FORMATTER.format(date) + "</dc:date>\n");
|
|
if (this.lon != 0.0f && this.lat != 0.0f) os.write("<geo:Point><geo:long>" + this.lon +"</geo:long><geo:lat>" + this.lat + "</geo:lat></geo:Point>\n");
|
|
os.write("</record>\n");
|
|
}
|
|
|
|
@Override
|
|
public String toString() {
|
|
final ByteArrayOutputStream baos = new ByteArrayOutputStream();
|
|
try {
|
|
final Writer osw = new OutputStreamWriter(baos, "UTF-8");
|
|
writeXML(osw, new Date());
|
|
osw.close();
|
|
return UTF8.String(baos.toByteArray());
|
|
} catch (final UnsupportedEncodingException e1) {
|
|
return "";
|
|
} catch (final IOException e) {
|
|
return "";
|
|
}
|
|
}
|
|
|
|
public void close() {
|
|
if (this.text == null) return;
|
|
|
|
// try close the output stream
|
|
if (this.text instanceof InputStream) try {
|
|
((InputStream) this.text).close();
|
|
} catch (final Exception e) {} finally {
|
|
this.text = null;
|
|
}
|
|
|
|
// delete the temp file
|
|
if (this.text instanceof File) try {
|
|
FileUtils.deletedelete((File) this.text);
|
|
} catch (final Exception e) {} finally {
|
|
this.text = null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* merge documents: a helper method for all parsers that return multiple documents
|
|
* @param docs
|
|
* @return
|
|
*/
|
|
public static Document mergeDocuments(final MultiProtocolURI location,
|
|
final String globalMime, final Document[] docs)
|
|
{
|
|
if (docs == null || docs.length == 0) return null;
|
|
if (docs.length == 1) return docs[0];
|
|
|
|
long docTextLength = 0;
|
|
final ByteBuffer content = new ByteBuffer();
|
|
final StringBuilder authors = new StringBuilder(80);
|
|
final StringBuilder publishers = new StringBuilder(80);
|
|
final StringBuilder subjects = new StringBuilder(80);
|
|
final StringBuilder title = new StringBuilder(80);
|
|
final StringBuilder description = new StringBuilder(80);
|
|
final LinkedList<String> sectionTitles = new LinkedList<String>();
|
|
|
|
final Map<MultiProtocolURI, Properties> anchors = new HashMap<MultiProtocolURI, Properties>();
|
|
final Map<MultiProtocolURI, String> rss = new HashMap<MultiProtocolURI, String>();
|
|
final Map<MultiProtocolURI, ImageEntry> images = new HashMap<MultiProtocolURI, ImageEntry>();
|
|
float lon = 0.0f, lat = 0.0f;
|
|
|
|
for (final Document doc: docs) {
|
|
|
|
final String author = doc.dc_creator();
|
|
if (author.length() > 0) {
|
|
if (authors.length() > 0) authors.append(",");
|
|
subjects.append(author);
|
|
}
|
|
|
|
final String publisher = doc.dc_publisher();
|
|
if (publisher.length() > 0) {
|
|
if (publishers.length() > 0) publishers.append(",");
|
|
publishers.append(publisher);
|
|
}
|
|
|
|
final String subject = doc.dc_subject(',');
|
|
if (subject.length() > 0) {
|
|
if (subjects.length() > 0) subjects.append(",");
|
|
subjects.append(subject);
|
|
}
|
|
|
|
if (title.length() > 0) title.append("\n");
|
|
title.append(doc.dc_title());
|
|
|
|
sectionTitles.addAll(Arrays.asList(doc.getSectionTitles()));
|
|
|
|
if (description.length() > 0) description.append("\n");
|
|
description.append(doc.dc_description());
|
|
|
|
if (doc.getTextLength() > 0) {
|
|
if (docTextLength > 0) content.write('\n');
|
|
try {
|
|
docTextLength += FileUtils.copy(doc.getText(), content);
|
|
} catch (final IOException e) {
|
|
Log.logException(e);
|
|
}
|
|
}
|
|
anchors.putAll(doc.getAnchors());
|
|
rss.putAll(doc.getRSS());
|
|
ContentScraper.addAllImages(images, doc.getImages());
|
|
if (doc.lon() != 0.0f && doc.lat() != 0.0f) { lon = doc.lon(); lat = doc.lat(); }
|
|
}
|
|
return new Document(
|
|
location,
|
|
globalMime,
|
|
null,
|
|
null,
|
|
null,
|
|
subjects.toString().split(" |,"),
|
|
title.toString(),
|
|
authors.toString(),
|
|
publishers.toString(),
|
|
sectionTitles.toArray(new String[sectionTitles.size()]),
|
|
description.toString(),
|
|
lon, lat,
|
|
content.getBytes(),
|
|
anchors,
|
|
rss,
|
|
images,
|
|
false);
|
|
}
|
|
|
|
public static Map<MultiProtocolURI, String> getHyperlinks(final Document[] documents) {
|
|
final Map<MultiProtocolURI, String> result = new HashMap<MultiProtocolURI, String>();
|
|
for (final Document d: documents) {
|
|
result.putAll(d.getHyperlinks());
|
|
}
|
|
return result;
|
|
}
|
|
|
|
public static Map<MultiProtocolURI, String> getImagelinks(final Document[] documents) {
|
|
final Map<MultiProtocolURI, String> result = new HashMap<MultiProtocolURI, String>();
|
|
for (final Document d: documents) {
|
|
for (final ImageEntry imageReference : d.getImages().values()) {
|
|
result.put(imageReference.url(), imageReference.alt());
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
}
|