/**
* LibraryProvider.java
* Copyright 2009 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
* first published 01.10.2009 on http://yacy.net
*
* This file is part of YaCy Content Integration
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program in the file lgpl21.txt
* If not, see <http://www.gnu.org/licenses/>.
*/
package net.yacy.document;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import java.util.TreeSet;
import net.yacy.document.geolocalization.GeonamesLocalization;
import net.yacy.document.geolocalization.OpenGeoDBLocalization;
import net.yacy.document.geolocalization.OverarchingLocalization;
import net.yacy.kelondro.logging.Log;
public class LibraryProvider {
private static final String path_to_source_dictionaries = "source";
private static final String path_to_did_you_mean_dictionaries = "didyoumean";
public static final String disabledExtension = ".disabled";
public static WordCache dymLib = new WordCache(null);
public static OverarchingLocalization geoLoc = new OverarchingLocalization();
private static File dictSource = null;
private static File dictRoot = null;
public static enum Dictionary {
GEODB0("geo0",
"http://downloads.sourceforge.net/project/opengeodb/Data/0.2.5a/opengeodb-0.2.5a-UTF8-sql.gz",
"opengeodb-0.2.5a-UTF8-sql.gz"),
GEODB1("geo1",
"http://fa-technik.adfc.de/code/opengeodb/dump/opengeodb-02621_2010-03-16.sql.gz",
"opengeodb-02621_2010-03-16.sql.gz"),
GEON0("geon0",
"http://download.geonames.org/export/dump/cities1000.zip",
"cities1000.zip");
public String nickname, url, filename;
private Dictionary(String nickname, String url, String filename) {
this.nickname = nickname;
this.url = url;
this.filename = filename;
}
public File file() {
return new File(dictSource, filename);
}
public File fileDisabled() {
return new File(dictSource, filename + disabledExtension);
}
}
/**
* initialize the LibraryProvider as static class.
* This assigns default paths, and initializes the dictionary classes
* Additionally, if default dictionaries are given in the source path,
* they are translated into the input format inside the DATA/DICTIONARIES directory
*
* @param pathToSource
* @param pathToDICTIONARIES
*/
public static void initialize(final File rootPath) {
dictSource = new File(rootPath, path_to_source_dictionaries);
if (!dictSource.exists()) dictSource.mkdirs();
dictRoot = rootPath;
// initialize libraries
integrateDeReWo();
initDidYouMean();
integrateOpenGeoDB();
integrateGeonames();
}
public static void integrateOpenGeoDB() {
File geo1 = Dictionary.GEODB1.file();
File geo0 = Dictionary.GEODB0.file();
if (geo1.exists()) {
if (geo0.exists()) geo0.renameTo(Dictionary.GEODB0.fileDisabled());
geoLoc.addLocalization(Dictionary.GEODB1.nickname, new OpenGeoDBLocalization(geo1, false));
return;
}
if (geo0.exists()) {
geoLoc.addLocalization(Dictionary.GEODB0.nickname, new OpenGeoDBLocalization(geo0, false));
return;
}
}
public static void integrateGeonames() {
File geon = Dictionary.GEON0.file();
if (geon.exists()) {
geoLoc.addLocalization(Dictionary.GEON0.nickname, new GeonamesLocalization(geon));
return;
}
}
public static void initDidYouMean() {
final File dymDict = new File(dictRoot, path_to_did_you_mean_dictionaries);
if (!dymDict.exists()) dymDict.mkdirs();
dymLib = new WordCache(dymDict);
}
public static void integrateDeReWo() {
// translate input files (once..)
final File dymDict = new File(dictRoot, path_to_did_you_mean_dictionaries);
if (!dymDict.exists()) dymDict.mkdirs();
final File pathToSource = new File(dictRoot, path_to_source_dictionaries);
final File derewoInput = new File(pathToSource, "derewo-v-30000g-2007-12-31-0.1.txt");
final File derewoOutput = new File(dymDict, "derewo-v-30000g-2007-12-31-0.1.words");
if (!derewoOutput.exists() && derewoInput.exists()) {
// create the translation of the derewo file (which is easy in this case)
final ArrayList<String> derewo = loadDeReWo(derewoInput, true);
try {
writeWords(derewoOutput, derewo);
} catch (IOException e) {
Log.logException(e);
}
}
}
/*
private static ArrayList<String> loadList(final File file, String comment, boolean toLowerCase) {
final ArrayList<String> list = new ArrayList<String>();
if (!file.exists()) return list;
BufferedReader reader = null;
try {
reader = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
String line;
while ((line = reader.readLine()) != null) {
line = line.trim();
if ((line.length() > 0) && (!(line.startsWith(comment)))) {
list.add((toLowerCase) ? line.trim().toLowerCase() : line.trim());
}
}
reader.close();
} catch (final IOException e) {
Log.logException(e);
} finally {
if (reader != null) try { reader.close(); } catch (final Exception e) {}
}
return list;
}
*/
private static Set<String> sortUnique(final List<String> list) {
final Set<String> s = new TreeSet<String>();
for (final String t: list) s.add(t);
return s;
}
private static void writeWords(final File f, final ArrayList<String> list) throws IOException {
final Set<String> s = sortUnique(list);
final PrintWriter w = new PrintWriter(new BufferedWriter(new FileWriter(f)));
for (final String t: s) w.println(t);
w.close();
}
private static ArrayList<String> loadDeReWo(final File file, final boolean toLowerCase) {
final ArrayList<String> list = new ArrayList<String>();
BufferedReader reader = null;
try {
reader = new BufferedReader(new InputStreamReader(new FileInputStream(file), "UTF-8"));
String line;
// read until text starts
while ((line = reader.readLine()) != null) {
if (line.startsWith("-----")) break;
}
// read empty line
line = reader.readLine();
// read lines
int p;
int c;
while ((line = reader.readLine()) != null) {
line = line.trim();
p = line.indexOf("\t");
if (p > 0) {
c = Integer.parseInt(line.substring(p + 1));
if (c < 1) continue;
list.add((toLowerCase) ? line.substring(0, p).trim().toLowerCase() : line.substring(0, p).trim());
}
}
reader.close();
} catch (final IOException e) {
Log.logException(e);
} finally {
if (reader != null) try { reader.close(); } catch (final Exception e) {}
}
return list;
}
public static void main(String[] args) {
File here = new File("dummy").getParentFile();
initialize(new File(here, "DATA/DICTIONARIES"));
System.out.println("dymDict-size = " + dymLib.size());
Set<String> r = dymLib.recommend("da");
for (String s: r) {
System.out.println("$ " + s);
}
System.out.println("recommendations: " + r.size());
}
}