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752 lines
32 KiB
752 lines
32 KiB
// plasmaCondenser.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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// last change: 09.01.2004
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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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// compile with javac -sourcepath source source/de/anomic/plasma/plasmaCondenser.java
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// execute with java -cp source de.anomic.plasma.plasmaCondenser
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package de.anomic.plasma;
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import java.io.BufferedReader;
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import java.io.ByteArrayInputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.RandomAccessFile;
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import java.io.Reader;
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import java.io.UnsupportedEncodingException;
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import java.util.Enumeration;
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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.Locale;
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import java.util.Map;
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import java.util.Properties;
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import java.util.TreeMap;
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import java.util.TreeSet;
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import de.anomic.htmlFilter.htmlFilterContentScraper;
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import de.anomic.htmlFilter.htmlFilterImageEntry;
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import de.anomic.index.indexPhrase;
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import de.anomic.index.indexRWIEntry;
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import de.anomic.index.indexWord;
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import de.anomic.kelondro.order.Bitfield;
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import de.anomic.kelondro.util.SetTools;
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import de.anomic.language.identification.Identificator;
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import de.anomic.yacy.yacyURL;
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public final class plasmaCondenser {
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// this is the page analysis class
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// category flags that show how the page can be distinguished in different interest groups
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public static final int flag_cat_indexof = 0; // a directory listing page (i.e. containing 'index of')
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public static final int flag_cat_opencontent = 1; // open source, any free stuff
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public static final int flag_cat_business = 2; // web shops, marketing, trade
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public static final int flag_cat_stockfinance = 3; // stock exchange (quotes), finance, economy
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public static final int flag_cat_health = 4; // health
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public static final int flag_cat_sport = 5; // any sport, cars etc.
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public static final int flag_cat_lifestyle = 6; // travel, lifestyle
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public static final int flag_cat_politics = 7; // politics
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public static final int flag_cat_news = 8; // blogs, news pages
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public static final int flag_cat_children = 9; // toys, childrens education, help for parents
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public static final int flag_cat_entertainment = 10; // boulevard, entertainment, cultural content
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public static final int flag_cat_knowledge = 11; // science, school stuff, help for homework
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public static final int flag_cat_computer = 12; // any computer related stuff, networks, operation systems
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public static final int flag_cat_p2p = 13; // p2p support, file-sharing archives etc.
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public static final int flag_cat_sex = 14; // sexual content
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public static final int flag_cat_spam = 15; // pages that anybody would consider as not interesting
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public static final int flag_cat_linux = 16; // pages about linux software
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public static final int flag_cat_macos = 17; // pages about macintosh, apple computers and the mac os
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public static final int flag_cat_windows = 18; // pages about windows os and software
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public static final int flag_cat_osreserve = 19; // reserve
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public static final int flag_cat_hasimage = 20; // the page refers to (at least one) images
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public static final int flag_cat_hasaudio = 21; // the page refers to (at least one) audio file
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public static final int flag_cat_hasvideo = 22; // the page refers to (at least one) videos
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public static final int flag_cat_hasapp = 23; // the page refers to (at least one) application file
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private final static int numlength = 5;
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//private Properties analysis;
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private TreeMap<String, indexWord> words; // a string (the words) to (indexWord) - relation
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private final int wordminsize;
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private final int wordcut;
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//public int RESULT_NUMB_TEXT_BYTES = -1;
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public int RESULT_NUMB_WORDS = -1;
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public int RESULT_DIFF_WORDS = -1;
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public int RESULT_NUMB_SENTENCES = -1;
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public int RESULT_DIFF_SENTENCES = -1;
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public Bitfield RESULT_FLAGS = new Bitfield(4);
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Identificator languageIdentificator;
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public plasmaCondenser(final plasmaParserDocument document, final boolean indexText, final boolean indexMedia) throws UnsupportedEncodingException {
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// if addMedia == true, then all the media links are also parsed and added to the words
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// added media words are flagged with the appropriate media flag
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this.wordminsize = 3;
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this.wordcut = 2;
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this.words = new TreeMap<String, indexWord>();
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this.RESULT_FLAGS = new Bitfield(4);
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// construct flag set for document
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if (document.getImages().size() > 0) RESULT_FLAGS.set(flag_cat_hasimage, true);
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if (document.getAudiolinks().size() > 0) RESULT_FLAGS.set(flag_cat_hasaudio, true);
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if (document.getVideolinks().size() > 0) RESULT_FLAGS.set(flag_cat_hasvideo, true);
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if (document.getApplinks().size() > 0) RESULT_FLAGS.set(flag_cat_hasapp, true);
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this.languageIdentificator = new Identificator();
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Map.Entry<yacyURL, String> entry;
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if (indexText) {
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createCondensement(document.getText(), document.getCharset());
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// the phrase counter:
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// phrase 0 are words taken from the URL
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// phrase 1 is the MainTitle
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// phrase 2 is <not used>
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// phrase 3 is the Document Abstract
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// phrase 4 is the Document Author
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// phrase 5 are the tags specified in document
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// phrase 10 and above are the section headlines/titles (88 possible)
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// phrase 98 is taken from the embedded anchor/hyperlinks description (REMOVED!)
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// phrase 99 is taken from the media Link url and anchor description
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// phrase 100 and above are lines from the text
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insertTextToWords(document.dc_title(), 1, indexRWIEntry.flag_app_dc_title, RESULT_FLAGS, true);
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insertTextToWords(document.dc_description(), 3, indexRWIEntry.flag_app_dc_description, RESULT_FLAGS, true);
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insertTextToWords(document.dc_creator(), 4, indexRWIEntry.flag_app_dc_creator, RESULT_FLAGS, true);
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// missing: tags!
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final String[] titles = document.getSectionTitles();
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for (int i = 0; i < titles.length; i++) {
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insertTextToWords(titles[i], i + 10, indexRWIEntry.flag_app_emphasized, RESULT_FLAGS, true);
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}
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// anchors: for text indexing we add only the anchor description
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// REMOVED! Reason:
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// words from the anchor description should appear as normal text in the output from the parser
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// to flag these words as appearance in dc_description would confuse, since the user expects such word as titles of
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// pages that are shown in the search result. The words from the URLS should also not appear as part of the index, because they
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// are not visible in the text and could be used to crate fake-content
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/*
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final Iterator<Map.Entry<yacyURL, String>> i = document.getAnchors().entrySet().iterator();
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while (i.hasNext()) {
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entry = i.next();
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if ((entry == null) || (entry.getKey() == null)) continue;
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insertTextToWords(entry.getValue(), 98, indexRWIEntry.flag_app_dc_description, RESULT_FLAGS, true);
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}
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*/
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} else {
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this.RESULT_NUMB_WORDS = 0;
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this.RESULT_DIFF_WORDS = 0;
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this.RESULT_NUMB_SENTENCES = 0;
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this.RESULT_DIFF_SENTENCES = 0;
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}
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// add the URL components to the word list
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insertTextToWords(document.dc_source().toNormalform(false, true), 0, indexRWIEntry.flag_app_dc_identifier, RESULT_FLAGS, false);
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if (indexMedia) {
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// add anchor descriptions: here, we also add the url components
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// audio
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Iterator<Map.Entry<yacyURL, String>> i = document.getAudiolinks().entrySet().iterator();
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while (i.hasNext()) {
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entry = i.next();
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insertTextToWords(entry.getKey().toNormalform(false, false), 99, flag_cat_hasaudio, RESULT_FLAGS, false);
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insertTextToWords(entry.getValue(), 99, flag_cat_hasaudio, RESULT_FLAGS, true);
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}
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// video
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i = document.getVideolinks().entrySet().iterator();
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while (i.hasNext()) {
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entry = i.next();
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insertTextToWords(entry.getKey().toNormalform(false, false), 99, flag_cat_hasvideo, RESULT_FLAGS, false);
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insertTextToWords(entry.getValue(), 99, flag_cat_hasvideo, RESULT_FLAGS, true);
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}
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// applications
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i = document.getApplinks().entrySet().iterator();
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while (i.hasNext()) {
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entry = i.next();
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insertTextToWords(entry.getKey().toNormalform(false, false), 99, flag_cat_hasapp, RESULT_FLAGS, false);
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insertTextToWords(entry.getValue(), 99, flag_cat_hasapp, RESULT_FLAGS, true);
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}
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// images
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final Iterator<htmlFilterImageEntry> j = document.getImages().values().iterator();
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htmlFilterImageEntry ientry;
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while (j.hasNext()) {
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ientry = j.next();
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insertTextToWords(ientry.url().toNormalform(false, false), 99, flag_cat_hasimage, RESULT_FLAGS, false);
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insertTextToWords(ientry.alt(), 99, flag_cat_hasimage, RESULT_FLAGS, true);
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}
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// finally check all words for missing flag entry
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final Iterator<Map.Entry<String, indexWord>> k = words.entrySet().iterator();
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indexWord wprop;
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Map.Entry<String, indexWord> we;
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while (k.hasNext()) {
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we = k.next();
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wprop = we.getValue();
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if (wprop.flags == null) {
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wprop.flags = RESULT_FLAGS.clone();
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words.put(we.getKey(), wprop);
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}
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}
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}
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}
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private void insertTextToWords(final String text, final int phrase, final int flagpos, final Bitfield flagstemplate, boolean useForLanguageIdentification) {
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String word;
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indexWord wprop;
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sievedWordsEnum wordenum;
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try {
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wordenum = new sievedWordsEnum(new ByteArrayInputStream(text.getBytes("UTF-8")));
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} catch (final UnsupportedEncodingException e) {
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return;
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}
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int pip = 0;
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while (wordenum.hasMoreElements()) {
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word = (new String(wordenum.nextElement())).toLowerCase(Locale.ENGLISH);
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if (useForLanguageIdentification) languageIdentificator.add(word);
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if (word.length() < 3) continue;
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wprop = words.get(word);
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if (wprop == null) wprop = new indexWord(0, pip, phrase);
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if (wprop.flags == null) wprop.flags = flagstemplate.clone();
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wprop.flags.set(flagpos, true);
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words.put(word, wprop);
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pip++;
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this.RESULT_NUMB_WORDS++;
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this.RESULT_DIFF_WORDS++;
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}
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}
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public plasmaCondenser(final InputStream text, final String charset) throws UnsupportedEncodingException {
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this(text, charset, 3, 2);
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}
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public plasmaCondenser(final InputStream text, final String charset, final int wordminsize, final int wordcut) throws UnsupportedEncodingException {
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this.wordminsize = wordminsize;
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this.wordcut = wordcut;
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this.languageIdentificator = null; // we don't need that here
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// analysis = new Properties();
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words = new TreeMap<String, indexWord>();
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createCondensement(text, charset);
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}
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public int excludeWords(final TreeSet<String> stopwords) {
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// subtracts the given stopwords from the word list
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// the word list shrinkes. This returns the number of shrinked words
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final int oldsize = words.size();
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words = SetTools.excludeConstructive(words, stopwords);
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return oldsize - words.size();
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}
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public Map<String, indexWord> words() {
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// returns the words as word/indexWord relation map
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return words;
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}
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public String language() {
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return this.languageIdentificator.getLanguage();
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}
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public String intString(final int number, final int length) {
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String s = Integer.toString(number);
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while (s.length() < length) s = "0" + s;
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return s;
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}
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private void createCondensement(final InputStream is, final String charset) throws UnsupportedEncodingException {
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final HashSet<String> currsentwords = new HashSet<String>();
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StringBuilder sentence = new StringBuilder(100);
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String word = "";
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String k;
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int wordlen;
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indexWord wsp, wsp1;
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indexPhrase psp;
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int wordHandle;
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int wordHandleCount = 0;
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int sentenceHandleCount = 0;
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int allwordcounter = 0;
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int allsentencecounter = 0;
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int idx;
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int wordInSentenceCounter = 1;
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boolean comb_indexof = false, last_last = false, last_index = false;
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RandomAccessFile fa;
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final boolean dumpWords = false;
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final HashMap<StringBuilder, indexPhrase> sentences = new HashMap<StringBuilder, indexPhrase>();
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if (dumpWords) try {
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fa = new RandomAccessFile(new File("dump.txt"), "rw");
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fa.seek(fa.length());
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} catch (final IOException e) {
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e.printStackTrace();
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fa = null;
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}
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// read source
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final sievedWordsEnum wordenum = new sievedWordsEnum(is);
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while (wordenum.hasMoreElements()) {
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word = (new String(wordenum.nextElement())).toLowerCase(Locale.ENGLISH); // TODO: does toLowerCase work for non ISO-8859-1 chars?
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if (languageIdentificator != null) languageIdentificator.add(word);
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if (word.length() < wordminsize) continue;
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//System.out.println("PARSED-WORD " + word);
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//This is useful for testing what YaCy "sees" of a website.
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if (dumpWords && fa != null) try {
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fa.writeBytes(word);
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fa.write(160);
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} catch (final IOException e) {
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e.printStackTrace();
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}
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// distinguish punctuation and words
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wordlen = word.length();
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Iterator<String> it;
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if ((wordlen == 1) && (htmlFilterContentScraper.punctuation(word.charAt(0)))) {
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// store sentence
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if (sentence.length() > 0) {
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// we store the punctuation symbol as first element of the sentence vector
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allsentencecounter++;
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sentence.insert(0, word); // append at beginning
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if (sentences.containsKey(sentence)) {
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// sentence already exists
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psp = sentences.get(sentence);
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psp.inc();
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idx = psp.handle();
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sentences.put(sentence, psp);
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} else {
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// create new sentence
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idx = sentenceHandleCount++;
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sentences.put(sentence, new indexPhrase(idx));
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}
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// store to the words a link to this sentence
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it = currsentwords.iterator();
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while (it.hasNext()) {
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k = it.next();
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wsp = words.get(k);
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wsp.check(idx);
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words.put(k, wsp); // is that necessary?
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}
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}
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sentence = new StringBuilder(100);
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currsentwords.clear();
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wordInSentenceCounter = 1;
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} else {
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// check index.of detection
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if ((last_last) && (comb_indexof) && (word.equals("modified"))) {
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this.RESULT_FLAGS.set(flag_cat_indexof, true);
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wordenum.pre(true); // parse lines as they come with CRLF
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}
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if ((last_index) && (wordminsize > 2 || (word.equals("of")))) comb_indexof = true;
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last_last = word.equals("last");
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last_index = word.equals("index");
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// store word
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allwordcounter++;
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currsentwords.add(word);
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if (words.containsKey(word)) {
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// word already exists
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wsp = words.get(word);
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wordHandle = wsp.posInText;
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wsp.inc();
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} else {
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// word does not yet exist, create new word entry
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wordHandle = wordHandleCount++;
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wsp = new indexWord(wordHandle, wordInSentenceCounter, sentences.size() + 100);
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wsp.flags = RESULT_FLAGS.clone();
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}
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words.put(word, wsp);
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// we now have the unique handle of the word, put it into the sentence:
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sentence.append(intString(wordHandle, numlength));
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wordInSentenceCounter++;
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}
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}
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// finish last sentence
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if (sentence.length() > 0) {
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allsentencecounter++;
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sentence.insert(0, "."); // append at beginning
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if (sentences.containsKey(sentence)) {
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psp = sentences.get(sentence);
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psp.inc();
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sentences.put(sentence, psp);
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} else {
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sentences.put(sentence, new indexPhrase(sentenceHandleCount++));
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}
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}
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if (dumpWords && fa != null) try {
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fa.write('\n');
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fa.close();
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} catch (final IOException e) {
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e.printStackTrace();
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}
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// -------------------
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// we reconstruct the sentence hashtable
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// and order the entries by the number of the sentence
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// this structure is needed to replace double occurring words in sentences
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final Object[] orderedSentences = new Object[sentenceHandleCount];
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String[] s;
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int wc;
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Object o;
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final Iterator<StringBuilder> sit = sentences.keySet().iterator();
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while (sit.hasNext()) {
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o = sit.next();
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if (o != null) {
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sentence = (StringBuilder) o;
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wc = (sentence.length() - 1) / numlength;
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s = new String[wc + 2];
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psp = sentences.get(sentence);
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s[0] = intString(psp.occurrences(), numlength); // number of occurrences of this sentence
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s[1] = sentence.substring(0, 1); // the termination symbol of this sentence
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for (int i = 0; i < wc; i++) {
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k = sentence.substring(i * numlength + 1, (i + 1) * numlength + 1);
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s[i + 2] = k;
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}
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orderedSentences[psp.handle()] = s;
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}
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}
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Map.Entry<String, indexWord> entry;
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// we search for similar words and reorganize the corresponding sentences
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// a word is similar, if a shortened version is equal
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final Iterator<Map.Entry<String, indexWord>> wi = words.entrySet().iterator(); // enumerates the keys in descending order
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wordsearch: while (wi.hasNext()) {
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entry = wi.next();
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word = entry.getKey();
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wordlen = word.length();
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wsp = entry.getValue();
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for (int i = wordcut; i > 0; i--) {
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if (wordlen > i) {
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k = word.substring(0, wordlen - i);
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if (words.containsKey(k)) {
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// we will delete the word 'word' and repoint the
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// corresponding links
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// in sentences that use this word
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wsp1 = words.get(k);
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final Iterator<Integer> it1 = wsp.phrases(); // we iterate over all sentences that refer to this word
|
|
while (it1.hasNext()) {
|
|
idx = it1.next().intValue(); // number of a sentence
|
|
s = (String[]) orderedSentences[idx];
|
|
for (int j = 2; j < s.length; j++) {
|
|
if (s[j].equals(intString(wsp.posInText, numlength)))
|
|
s[j] = intString(wsp1.posInText, numlength);
|
|
}
|
|
orderedSentences[idx] = s;
|
|
}
|
|
// update word counter
|
|
wsp1.count = wsp1.count + wsp.count;
|
|
words.put(k, wsp1);
|
|
// remove current word
|
|
wi.remove();
|
|
continue wordsearch;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// store result
|
|
//this.RESULT_NUMB_TEXT_BYTES = wordenum.count();
|
|
this.RESULT_NUMB_WORDS = allwordcounter;
|
|
this.RESULT_DIFF_WORDS = wordHandleCount;
|
|
this.RESULT_NUMB_SENTENCES = allsentencecounter;
|
|
this.RESULT_DIFF_SENTENCES = sentenceHandleCount;
|
|
}
|
|
|
|
public final static boolean invisible(final char c) {
|
|
final int type = Character.getType(c);
|
|
if(
|
|
(type == Character.LOWERCASE_LETTER)
|
|
|| (type == Character.DECIMAL_DIGIT_NUMBER)
|
|
|| (type == Character.UPPERCASE_LETTER)
|
|
|| (type == Character.MODIFIER_LETTER)
|
|
|| (type == Character.OTHER_LETTER)
|
|
|| (type == Character.TITLECASE_LETTER)
|
|
|| (htmlFilterContentScraper.punctuation(c)))
|
|
return false;
|
|
else
|
|
return true;
|
|
}
|
|
|
|
public static Enumeration<StringBuilder> wordTokenizer(final String s, final String charset) {
|
|
try {
|
|
return new sievedWordsEnum(new ByteArrayInputStream(s.getBytes(charset)));
|
|
} catch (final Exception e) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
public static class sievedWordsEnum implements Enumeration<StringBuilder> {
|
|
// this enumeration removes all words that contain either wrong characters or are too short
|
|
|
|
StringBuilder buffer = null;
|
|
unsievedWordsEnum e;
|
|
|
|
public sievedWordsEnum(final InputStream is) throws UnsupportedEncodingException {
|
|
e = new unsievedWordsEnum(is);
|
|
buffer = nextElement0();
|
|
}
|
|
|
|
public void pre(final boolean x) {
|
|
e.pre(x);
|
|
}
|
|
|
|
private StringBuilder nextElement0() {
|
|
StringBuilder s;
|
|
loop: while (e.hasMoreElements()) {
|
|
s = e.nextElement();
|
|
if ((s.length() == 1) && (htmlFilterContentScraper.punctuation(s.charAt(0)))) return s;
|
|
for (int i = 0; i < s.length(); i++) {
|
|
if (invisible(s.charAt(i))) continue loop;
|
|
}
|
|
return s;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
public boolean hasMoreElements() {
|
|
return buffer != null;
|
|
}
|
|
|
|
public StringBuilder nextElement() {
|
|
final StringBuilder r = buffer;
|
|
buffer = nextElement0();
|
|
return r;
|
|
}
|
|
|
|
}
|
|
|
|
private static class unsievedWordsEnum implements Enumeration<StringBuilder> {
|
|
// returns an enumeration of StringBuilder Objects
|
|
StringBuilder buffer = null;
|
|
sentencesFromInputStreamEnum e;
|
|
StringBuilder s;
|
|
|
|
public unsievedWordsEnum(final InputStream is) throws UnsupportedEncodingException {
|
|
e = new sentencesFromInputStreamEnum(is);
|
|
s = new StringBuilder(20);
|
|
buffer = nextElement0();
|
|
}
|
|
|
|
public void pre(final boolean x) {
|
|
e.pre(x);
|
|
}
|
|
|
|
private StringBuilder nextElement0() {
|
|
StringBuilder r;
|
|
StringBuilder sb;
|
|
char c;
|
|
while (s.length() == 0) {
|
|
if (e.hasNext()) {
|
|
r = e.next();
|
|
if (r == null) return null;
|
|
r = trim(r);
|
|
sb = new StringBuilder(r.length() * 2);
|
|
for (int i = 0; i < r.length(); i++) {
|
|
c = r.charAt(i);
|
|
if (invisible(c)) sb = sb.append(' '); // TODO: Bugfix needed for UTF-8
|
|
else if (htmlFilterContentScraper.punctuation(c)) sb = sb.append(' ').append(c).append(' ');
|
|
else sb = sb.append(c);
|
|
}
|
|
s = trim(sb);
|
|
//System.out.println("PARSING-LINE '" + r + "'->'" + s + "'");
|
|
} else {
|
|
return null;
|
|
}
|
|
}
|
|
final int p = s.indexOf(" ");
|
|
if (p < 0) {
|
|
r = s;
|
|
s = new StringBuilder();
|
|
return r;
|
|
}
|
|
r = trim(new StringBuilder(s.substring(0, p)));
|
|
s = trim(s.delete(0, p + 1));
|
|
return r;
|
|
}
|
|
|
|
public boolean hasMoreElements() {
|
|
return buffer != null;
|
|
}
|
|
|
|
public StringBuilder nextElement() {
|
|
final StringBuilder r = buffer;
|
|
buffer = nextElement0();
|
|
return r;
|
|
}
|
|
|
|
}
|
|
|
|
static StringBuilder trim(StringBuilder sb) {
|
|
while ((sb.length() > 0) && (sb.charAt(0) <= ' ')) sb = sb.deleteCharAt(0);
|
|
while ((sb.length() > 0) && (sb.charAt(sb.length() - 1) <= ' ')) sb = sb.deleteCharAt(sb.length() - 1);
|
|
return sb;
|
|
}
|
|
|
|
public static sentencesFromInputStreamEnum sentencesFromInputStream(final InputStream is) {
|
|
try {
|
|
return new sentencesFromInputStreamEnum(is);
|
|
} catch (final UnsupportedEncodingException e) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
public static class sentencesFromInputStreamEnum implements Iterator<StringBuilder> {
|
|
// read sentences from a given input stream
|
|
// this enumerates StringBuilder objects
|
|
|
|
StringBuilder buffer = null;
|
|
BufferedReader raf;
|
|
int counter = 0;
|
|
boolean pre = false;
|
|
|
|
public sentencesFromInputStreamEnum(final InputStream is) throws UnsupportedEncodingException {
|
|
raf = new BufferedReader(new InputStreamReader(is, "UTF-8"));
|
|
buffer = nextElement0();
|
|
counter = 0;
|
|
pre = false;
|
|
}
|
|
|
|
public void pre(final boolean x) {
|
|
this.pre = x;
|
|
}
|
|
|
|
private StringBuilder nextElement0() {
|
|
try {
|
|
final StringBuilder s = readSentence(raf, pre);
|
|
//System.out.println(" SENTENCE='" + s + "'"); // DEBUG
|
|
if (s == null) {
|
|
raf.close();
|
|
return null;
|
|
}
|
|
return s;
|
|
} catch (final IOException e) {
|
|
try {
|
|
raf.close();
|
|
} catch (final Exception ee) {
|
|
}
|
|
return null;
|
|
}
|
|
}
|
|
|
|
public boolean hasNext() {
|
|
return buffer != null;
|
|
}
|
|
|
|
public StringBuilder next() {
|
|
if (buffer == null) {
|
|
return null;
|
|
}
|
|
counter = counter + buffer.length() + 1;
|
|
final StringBuilder r = buffer;
|
|
buffer = nextElement0();
|
|
return r;
|
|
}
|
|
|
|
public int count() {
|
|
return counter;
|
|
}
|
|
|
|
public void remove() {
|
|
throw new UnsupportedOperationException();
|
|
}
|
|
}
|
|
|
|
static StringBuilder readSentence(final Reader reader, final boolean pre) throws IOException {
|
|
final StringBuilder s = new StringBuilder(40);
|
|
int nextChar;
|
|
char c, lc = ' '; // starting with ' ' as last character prevents that the result string starts with a ' '
|
|
|
|
// find sentence end
|
|
while (true) {
|
|
nextChar = reader.read();
|
|
//System.out.print((char) nextChar); // DEBUG
|
|
if (nextChar < 0) {
|
|
if (s.length() == 0) return null;
|
|
break;
|
|
}
|
|
c = (char) nextChar;
|
|
if (pre && ((c == (char) 10) || (c == (char) 13))) break;
|
|
if (c < ' ') c = ' ';
|
|
if ((lc == ' ') && (c == ' ')) continue; // ignore double spaces
|
|
s.append(c);
|
|
if (htmlFilterContentScraper.punctuation(c)) break;
|
|
lc = c;
|
|
}
|
|
|
|
if (s.length() == 0) return s;
|
|
if (s.charAt(s.length() - 1) == ' ') {
|
|
s.trimToSize();
|
|
s.deleteCharAt(s.length() - 1);
|
|
}
|
|
return s;
|
|
}
|
|
|
|
public static Map<String, indexWord> getWords(final String text) {
|
|
// returns a word/indexWord relation map
|
|
if (text == null) return null;
|
|
ByteArrayInputStream buffer;
|
|
try {
|
|
buffer = new ByteArrayInputStream(text.getBytes("UTF-8"));
|
|
} catch (UnsupportedEncodingException e1) {
|
|
buffer = new ByteArrayInputStream(text.getBytes());
|
|
}
|
|
try {
|
|
return new plasmaCondenser(buffer, "UTF-8", 2, 1).words();
|
|
} catch (final UnsupportedEncodingException e) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
public static void main(final String[] args) {
|
|
// read a property file and convert them into configuration lines
|
|
try {
|
|
final File f = new File(args[0]);
|
|
final Properties p = new Properties();
|
|
p.load(new FileInputStream(f));
|
|
final StringBuilder sb = new StringBuilder();
|
|
sb.append("{\n");
|
|
for (int i = 0; i <= 15; i++) {
|
|
sb.append('"');
|
|
final String s = p.getProperty("keywords" + i);
|
|
final String[] l = s.split(",");
|
|
for (int j = 0; j < l.length; j++) {
|
|
sb.append(indexWord.word2hash(l[j]));
|
|
}
|
|
if (i < 15) sb.append(",\n");
|
|
}
|
|
sb.append("}\n");
|
|
System.out.println(new String(sb));
|
|
} catch (final FileNotFoundException e) {
|
|
e.printStackTrace();
|
|
} catch (final IOException e) {
|
|
e.printStackTrace();
|
|
}
|
|
|
|
}
|
|
|
|
}
|