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200 lines
7.3 KiB
200 lines
7.3 KiB
// LibraryProvider.java
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// (C) 2009 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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// first published 01.10.2009 on http://yacy.net
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//
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// This is a part of YaCy
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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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// LICENSE
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package de.anomic.data;
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import java.io.BufferedReader;
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import java.io.BufferedWriter;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.io.PrintWriter;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Set;
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import java.util.TreeSet;
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import net.yacy.document.geolocalization.OpenGeoDB;
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import net.yacy.kelondro.logging.Log;
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public class LibraryProvider {
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private static final String path_to_source_dictionaries = "source";
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private static final String path_to_did_you_mean_dictionaries = "didyoumean";
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public static DidYouMeanLibrary dymLib = new DidYouMeanLibrary(null);
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public static OpenGeoDB geoDB = new OpenGeoDB(null);
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public static File dictSource = null;
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public static File dictRoot = null;
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/**
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* initialize the LibraryProvider as static class.
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* This assigns default paths, and initializes the dictionary classes
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* Additionally, if default dictionaries are given in the source path,
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* they are translated into the input format inside the DATA/DICTIONARIES directory
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*
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* @param pathToSource
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* @param pathToDICTIONARIES
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*/
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public static void initialize(File rootPath) {
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dictSource = new File(rootPath, path_to_source_dictionaries);
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if (!dictSource.exists()) dictSource.mkdirs();
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dictRoot = rootPath;
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// initialize libraries
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integrateDeReWo();
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initDidYouMean();
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integrateOpenGeoDB();
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}
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public static void integrateOpenGeoDB() {
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File ogdb = new File(dictSource, "opengeodb-0.2.5a-UTF8-sql.gz");
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if (ogdb.exists()) {
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geoDB = new OpenGeoDB(ogdb);
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return;
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}
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ogdb = new File(dictSource, "opengeodb-02513_2007-10-02.sql.gz");
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if (ogdb.exists()) {
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geoDB = new OpenGeoDB(ogdb);
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return;
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}
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ogdb = new File(dictSource, "opengeodb-02513_2007-10-02.sql");
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if (ogdb.exists()) {
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geoDB = new OpenGeoDB(ogdb);
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return;
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}
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}
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public static void initDidYouMean() {
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File dymDict = new File(dictRoot, path_to_did_you_mean_dictionaries);
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if (!dymDict.exists()) dymDict.mkdirs();
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dymLib = new DidYouMeanLibrary(dymDict);
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}
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public static void integrateDeReWo() {
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// translate input files (once..)
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File dymDict = new File(dictRoot, path_to_did_you_mean_dictionaries);
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if (!dymDict.exists()) dymDict.mkdirs();
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File pathToSource = new File(dictRoot, path_to_source_dictionaries);
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File derewoInput = new File(pathToSource, "derewo-v-30000g-2007-12-31-0.1.txt");
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File derewoOutput = new File(dymDict, "derewo-v-30000g-2007-12-31-0.1.words");
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if (!derewoOutput.exists() && derewoInput.exists()) {
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// create the translation of the derewo file (which is easy in this case)
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ArrayList<String> derewo = loadDeReWo(derewoInput, true);
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try {
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writeWords(derewoOutput, derewo);
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} catch (IOException e) {
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Log.logException(e);
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}
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}
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}
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/*
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private static ArrayList<String> loadList(final File file, String comment, boolean toLowerCase) {
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final ArrayList<String> list = new ArrayList<String>();
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if (!file.exists()) return list;
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BufferedReader reader = null;
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try {
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reader = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
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String line;
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while ((line = reader.readLine()) != null) {
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line = line.trim();
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if ((line.length() > 0) && (!(line.startsWith(comment)))) {
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list.add((toLowerCase) ? line.trim().toLowerCase() : line.trim());
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}
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}
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reader.close();
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} catch (final IOException e) {
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Log.logException(e);
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} finally {
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if (reader != null) try { reader.close(); } catch (final Exception e) {}
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}
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return list;
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}
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*/
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private static Set<String> sortUnique(List<String> list) {
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TreeSet<String> s = new TreeSet<String>();
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for (String t: list) s.add(t);
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return s;
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}
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private static void writeWords(File f, ArrayList<String> list) throws IOException {
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Set<String> s = sortUnique(list);
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PrintWriter w = new PrintWriter(new BufferedWriter(new FileWriter(f)));
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for (String t: s) w.println(t);
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w.close();
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}
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private static ArrayList<String> loadDeReWo(final File file, boolean toLowerCase) {
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final ArrayList<String> list = new ArrayList<String>();
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BufferedReader reader = null;
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try {
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reader = new BufferedReader(new InputStreamReader(new FileInputStream(file), "UTF-8"));
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String line;
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// read until text starts
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while ((line = reader.readLine()) != null) {
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if (line.startsWith("-----")) break;
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}
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// read empty line
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line = reader.readLine();
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// read lines
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int p;
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int c;
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while ((line = reader.readLine()) != null) {
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line = line.trim();
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p = line.indexOf("\t");
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if (p > 0) {
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c = Integer.parseInt(line.substring(p + 1));
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if (c < 1) continue;
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list.add((toLowerCase) ? line.substring(0, p).trim().toLowerCase() : line.substring(0, p).trim());
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}
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}
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reader.close();
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} catch (final IOException e) {
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Log.logException(e);
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} finally {
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if (reader != null) try { reader.close(); } catch (final Exception e) {}
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}
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return list;
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}
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public static void main(String[] args) {
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File here = new File("dummy").getParentFile();
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initialize(new File(here, "DATA/DICTIONARIES"));
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System.out.println("dymDict-size = " + dymLib.size());
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Set<String> r = dymLib.recommend("da");
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for (String s: r) {
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System.out.println("$ " + s);
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}
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System.out.println("recommendations: " + r.size());
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}
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}
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