// mediawikiIndex.java
// (C) 2008 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
// first published 20.11.2008 on http://yacy.net
//
// This is a part of YaCy, a peer-to-peer based web search engine
//
// $LastChangedDate: 2006-04-02 22:40:07 +0200 (So, 02 Apr 2006) $
// $LastChangedRevision: 1986 $
// $LastChangedBy: orbiter $
//
// LICENSE
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
package de.anomic.tools;
import org.apache.tools.bzip2.CBZip2InputStream;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.RandomAccessFile;
import java.io.UnsupportedEncodingException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Date;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import de.anomic.data.wiki.wikiCode;
import de.anomic.data.wiki.wikiParser;
import de.anomic.kelondro.util.ByteBuffer;
import de.anomic.plasma.plasmaParser;
import de.anomic.plasma.plasmaParserDocument;
import de.anomic.plasma.parser.ParserException;
import de.anomic.yacy.yacyURL;
import de.anomic.yacy.logging.Log;
/*
* this class provides data structures to read a mediawiki dump file in xml format
* as referenced with xmlns="http://www.mediawiki.org/xml/export-0.3/"
*/
public class mediawikiIndex extends Thread {
private static final String textstart = "<text";
private static final String textend = "</text>";
private static final String pagestart = "<page>";
private static final String pageend = "</page>";
private static final byte[] pagestartb = pagestart.getBytes();
private static final byte[] pageendb = pageend.getBytes();
private wikiParser wparser;
private plasmaParser hparser;
private String urlStub;
public File sourcefile;
public File targetdir;
public int count;
private long start;
private long docsize;
private int approxdocs;
private static final int docspermbinxmlbz2 = 800; // documents per megabyte in a xml.bz2 wikimedia dump
public static mediawikiIndex job; // if started from a servlet, this object is used to store the thread
public mediawikiIndex(File sourcefile, File targetdir, String baseURL) throws MalformedURLException {
this.sourcefile = sourcefile;
this.docsize = sourcefile.length();
this.approxdocs = (int) (this.docsize * (long) docspermbinxmlbz2 / 1024L / 1024L);
this.targetdir = targetdir;
this.urlStub = baseURL;
this.wparser = new wikiCode(new URL(baseURL).getHost());
this.hparser = new plasmaParser();
this.count = 0;
this.start = 0;
// must be called before usage:
plasmaParser.initHTMLParsableMimeTypes("text/html");
plasmaParser.initParseableMimeTypes(plasmaParser.PARSER_MODE_CRAWLER, "text/html");
}
/**
* return the number of articles per second
* @return
*/
public int speed() {
if (count == 0) return 0;
return (int) ((long) count / runningTime());
}
/**
* return the remaining seconds for the completion of all records in milliseconds
* @return
*/
public long remainingTime() {
return Math.max(0, this.approxdocs - count) / speed();
}
public long runningTime() {
return (System.currentTimeMillis() - start) / 1024;
}
public void run() {
this.start = System.currentTimeMillis();
try {
String targetstub = sourcefile.getName();
targetstub = targetstub.substring(0, targetstub.length() - 8);
InputStream is = new BufferedInputStream(new FileInputStream(sourcefile), 1 * 1024 * 1024);
if (sourcefile.getName().endsWith(".bz2")) {
int b = is.read();
if (b != 'B') throw new IOException("Invalid bz2 content.");
b = is.read();
if (b != 'Z') throw new IOException("Invalid bz2 content.");
is = new CBZip2InputStream(is);
}
BufferedReader r = new BufferedReader(new java.io.InputStreamReader(is, "UTF-8"), 4 * 1024 * 1024);
String t;
StringBuilder sb = new StringBuilder();
boolean page = false, text = false;
String title = null;
plasmaParser.initHTMLParsableMimeTypes("text/html");
plasmaParser.initParseableMimeTypes(plasmaParser.PARSER_MODE_CRAWLER, "text/html");
wikiparserrecord poison = newRecord();
int threads = Math.max(2, Runtime.getRuntime().availableProcessors() - 1);
BlockingQueue<wikiparserrecord> in = new ArrayBlockingQueue<wikiparserrecord>(threads * 10);
BlockingQueue<wikiparserrecord> out = new ArrayBlockingQueue<wikiparserrecord>(threads * 10);
ExecutorService service = Executors.newFixedThreadPool(threads + 1);
convertConsumer[] consumers = new convertConsumer[threads];
Future<?>[] consumerResults = new Future[threads];
for (int i = 0; i < threads; i++) {
consumers[i] = new convertConsumer(in, out, poison);
consumerResults[i] = service.submit(consumers[i]);
}
convertWriter writer = new convertWriter(out, poison, targetdir, targetstub);
Future<Integer> writerResult = service.submit(writer);
wikiparserrecord record;
int p;
while ((t = r.readLine()) != null) {
if (t.indexOf(pagestart) >= 0) {
page = true;
continue;
}
if ((p = t.indexOf(textstart)) >= 0) {
text = page;
int q = t.indexOf('>', p + textstart.length());
if (q > 0) {
int u = t.indexOf(textend, q + 1);
if (u > q) {
sb.append(t.substring(q + 1, u));
Log.logInfo("WIKITRANSLATION", "[INJECT] Title: " + title);
if (sb.length() == 0) {
Log.logInfo("WIKITRANSLATION", "ERROR: " + title + " has empty content");
continue;
}
record = newRecord(title, sb);
try {
in.put(record);
this.count++;
} catch (InterruptedException e1) {
e1.printStackTrace();
}
sb = new StringBuilder(200);
continue;
} else {
sb.append(t.substring(q + 1));
}
}
continue;
}
if (t.indexOf(textend) >= 0) {
text = false;
Log.logInfo("WIKITRANSLATION", "[INJECT] Title: " + title);
if (sb.length() == 0) {
Log.logInfo("WIKITRANSLATION", "ERROR: " + title + " has empty content");
continue;
}
record = newRecord(title, sb);
try {
in.put(record);
this.count++;
} catch (InterruptedException e1) {
e1.printStackTrace();
}
sb = new StringBuilder(200);
continue;
}
if (t.indexOf(pageend) >= 0) {
page = false;
continue;
}
if ((p = t.indexOf("<title>")) >= 0) {
title = t.substring(p + 7);
int q = title.indexOf("</title>");
if (q >= 0) title = title.substring(0, q);
continue;
}
if (text) {
sb.append(t);
sb.append('\n');
}
}
r.close();
try {
for (int i = 0; i < threads; i++) {
in.put(poison);
}
for (int i = 0; i < threads; i++) {
consumerResults[i].get(10000, TimeUnit.MILLISECONDS);
}
out.put(poison);
writerResult.get(10000, TimeUnit.MILLISECONDS);
} catch (InterruptedException e1) {
e1.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
} catch (TimeoutException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
public static void checkIndex(File wikimediaxml) {
File idx = idxFromWikimediaXML(wikimediaxml);
if (idx.exists()) return;
new indexMaker(wikimediaxml).start();
}
public static class indexMaker extends Thread {
File wikimediaxml;
public indexMaker(File wikimediaxml) {
this.wikimediaxml = wikimediaxml;
}
public void run() {
try {
createIndex(this.wikimediaxml);
} catch (final IOException e) {
} catch (final Exception e) {
e.printStackTrace();
}
}
}
public static File idxFromWikimediaXML(File wikimediaxml) {
return new File(wikimediaxml.getAbsolutePath() + ".idx.xml");
}
public static void createIndex(File dumpFile) throws IOException {
// calculate md5
//String md5 = serverCodings.encodeMD5Hex(dumpFile);
// init reader, producer and consumer
PositionAwareReader in = new PositionAwareReader(dumpFile);
indexProducer producer = new indexProducer(100, idxFromWikimediaXML(dumpFile));
wikiConsumer consumer = new wikiConsumer(100, producer);
ExecutorService service = Executors.newFixedThreadPool(2);
Future<Integer> producerResult = service.submit(consumer);
Future<Integer> consumerResult = service.submit(producer);
service.shutdown();
// read the wiki dump
long start, stop;
while (in.seek(pagestartb)) {
start = in.pos() - 6;
in.resetBuffer();
if (!in.seek(pageendb)) break;
stop = in.pos();
consumer.consume(new wikiraw(in.bytes(), start, stop));
in.resetBuffer();
}
// shut down the services
try {
consumer.consume(wikiConsumer.poison);
try {consumerResult.get(5000, TimeUnit.MILLISECONDS);} catch (TimeoutException e) {}
producer.consume(indexProducer.poison);
if (!consumerResult.isDone()) consumerResult.get();
producerResult.get();
} catch (InterruptedException e) {
e.printStackTrace();
return;
} catch (ExecutionException e) {
e.printStackTrace();
return;
}
in.close();
}
private static class indexProducer implements Callable<Integer> {
private BlockingQueue<wikisourcerecord> entries;
PrintWriter out;
private static wikisourcerecord poison = new wikisourcerecord("", 0, 0);
int count;
public indexProducer(int bufferCount, File indexFile) throws IOException {
entries = new ArrayBlockingQueue<wikisourcerecord>(bufferCount);
out = new PrintWriter(new BufferedWriter(new FileWriter(indexFile)));
count = 0;
out.println("<index>");
}
public void consume(wikisourcerecord b) {
try {
entries.put(b);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public Integer call() {
wikisourcerecord r;
try {
while(true) {
r = entries.take();
if (r == poison) {
Log.logInfo("WIKITRANSLATION", "producer / got poison");
break;
}
out.println(" <page start=\"" + r.start + "\" length=\"" + (r.end - r.start) + "\">");
out.println(" <title>" + r.title + "</title>");
out.println(" </page>");
Log.logInfo("WIKITRANSLATION", "producer / record start: " + r.start + ", title : " + r.title);
count++;
}
} catch (InterruptedException e) {
e.printStackTrace();
}
entries.clear();
out.println("</index>");
out.close();
return Integer.valueOf(count);
}
}
private static class wikiConsumer implements Callable<Integer> {
private BlockingQueue<wikiraw> entries;
private static wikiraw poison = new wikiraw(new byte[0], 0, 0);
private indexProducer producer;
private int count;
public wikiConsumer(int bufferCount, indexProducer producer) {
entries = new ArrayBlockingQueue<wikiraw>(bufferCount);
this.producer = producer;
count = 0;
}
public void consume(wikiraw b) {
try {
entries.put(b);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public Integer call() {
wikisourcerecord r;
wikiraw c;
try {
while(true) {
c = entries.take();
if (c == poison) {
Log.logInfo("WIKITRANSLATION", "consumer / got poison");
break;
}
try {
r = new wikisourcerecord(c.b, c.start, c.end);
producer.consume(r);
Log.logInfo("WIKITRANSLATION", "consumer / record start: " + r.start + ", title : " + r.title);
count++;
} catch (RuntimeException e) {}
}
} catch (InterruptedException e) {
e.printStackTrace();
}
entries.clear();
return Integer.valueOf(count);
}
}
private static class wikiraw {
public long start, end;
public byte[] b;
public wikiraw(byte[] b, long start, long end) {
this.b = b;
this.start = start;
this.end = end;
}
}
public static class wikisourcerecord {
public long start, end;
public String title;
public wikisourcerecord(String title, long start, long end) {
this.title = title;
this.start = start;
this.end = end;
}
public wikisourcerecord(byte[] chunk, long start, long end) {
String s;
try {
s = new String(chunk, "UTF-8");
} catch (UnsupportedEncodingException e) {
throw new RuntimeException(e.getMessage());
}
int t0 = s.indexOf("<title>");
if (t0 >= 0) {
int t1 = s.indexOf("</title>", t0);
if (t1 >= 0) {
this.title = s.substring(t0 + 7, t1);
} else {
throw new RuntimeException("no title end in record");
}
} else {
throw new RuntimeException("no title start in record");
}
this.start = start;
this.end = end;
}
}
public wikiparserrecord newRecord() {
return new wikiparserrecord(null, null);
}
public wikiparserrecord newRecord(String title, StringBuilder sb) {
return new wikiparserrecord(title, sb);
}
public class wikiparserrecord {
public String title;
String source;
String html;
yacyURL url;
plasmaParserDocument document;
public wikiparserrecord(String title, StringBuilder sb) {
this.title = title;
this.source = (sb == null) ? null : sb.toString();
}
public void genHTML() throws IOException {
try {
html = wparser.transform(source);
} catch (Exception e) {
e.printStackTrace();
throw new IOException(e.getMessage());
}
}
public void genDocument() throws InterruptedException, ParserException {
try {
url = new yacyURL(urlStub + title, null);
document = hparser.parseSource(url, "text/html", "utf-8", html.getBytes("UTF-8"));
// the wiki parser is not able to find the proper title in the source text, so it must be set here
document.setTitle(title);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (MalformedURLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
public void writeXML(OutputStreamWriter os) throws IOException {
document.writeXML(os, new Date());
}
}
private static class PositionAwareReader {
private InputStream is;
private long seekpos;
private ByteBuffer bb;
public PositionAwareReader(File dumpFile) throws FileNotFoundException {
this.is = new BufferedInputStream(new FileInputStream(dumpFile), 64 *1024);
this.seekpos = 0;
this.bb = new ByteBuffer();
}
public void resetBuffer() {
if (bb.length() > 10 * 1024) bb = new ByteBuffer(); else bb.clear();
}
public boolean seek(byte[] pattern) throws IOException {
int pp = 0;
int c;
while ((c = is.read()) >= 0) {
seekpos++;
bb.append(c);
if (pattern[pp] == c) pp++; else pp = 0;
if (pp == pattern.length) return true;
}
return false;
}
public long pos() {
return seekpos;
}
public byte[] bytes() {
return bb.getBytes();
}
public void close() {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
public static byte[] read(File f, long start, int len) {
byte[] b = new byte[len];
RandomAccessFile raf = null;
try {
raf = new RandomAccessFile(f, "r");
raf.seek(start);
raf.read(b);
} catch (IOException e) {
e.printStackTrace();
return null;
} finally {
if (raf != null) try {
raf.close();
try{raf.getChannel().close();} catch (IOException e) {}
} catch (IOException e) { }
}
return b;
}
public static wikisourcerecord find(String title, File f) throws IOException {
PositionAwareReader in = new PositionAwareReader(f);
long start;
String m = "<title>" + title + "</title>";
String s;
while (in.seek("<page ".getBytes())) {
start = in.pos() - 6;
in.resetBuffer();
if (!in.seek(pageendb)) break;
s = new String(in.bytes(), "UTF-8");
in.resetBuffer();
if (s.indexOf(m) >= 0) {
// we found the record
//Log.logInfo("WIKITRANSLATION", "s = " + s);
int p = s.indexOf("start=\"");
if (p < 0) return null;
p += 7;
int q = s.indexOf('"', p + 1);
if (q < 0) return null;
start = Long.parseLong(s.substring(p, q));
p = s.indexOf("length=\"", q);
if (p < 0) return null;
p += 8;
q = s.indexOf('"', p + 1);
if (q < 0) return null;
int length = Integer.parseInt(s.substring(p, q));
//Log.logInfo("WIKITRANSLATION", "start = " + start + ", length = " + length);
return new wikisourcerecord(title, start, start + length);
}
}
return null;
}
private static class convertConsumer implements Callable<Integer> {
private BlockingQueue<wikiparserrecord> in, out;
private wikiparserrecord poison;
public convertConsumer(BlockingQueue<wikiparserrecord> in, BlockingQueue<wikiparserrecord> out, wikiparserrecord poison) {
this.poison = poison;
this.in = in;
this.out = out;
}
public Integer call() {
wikiparserrecord record;
try {
while(true) {
record = in.take();
if (record == poison) {
Log.logInfo("WIKITRANSLATION", "convertConsumer / got poison");
break;
}
try {
record.genHTML();
record.genDocument();
out.put(record);
} catch (RuntimeException e) {
e.printStackTrace();
} catch (ParserException e) {
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
} catch (InterruptedException e) {
e.printStackTrace();
}
Log.logInfo("WIKITRANSLATION", "*** convertConsumer has terminated");
return Integer.valueOf(0);
}
}
private static class convertWriter implements Callable<Integer> {
private BlockingQueue<wikiparserrecord> in;
private wikiparserrecord poison;
private OutputStreamWriter osw;
private String targetstub;
private File targetdir;
private int fc, rc;
private String outputfilename;
public convertWriter(
BlockingQueue<wikiparserrecord> in,
wikiparserrecord poison,
File targetdir,
String targetstub) {
this.poison = poison;
this.in = in;
this.osw = null;
this.targetdir = targetdir;
this.targetstub = targetstub;
this.fc = 0;
this.rc = 0;
this.outputfilename = null;
}
public Integer call() {
wikiparserrecord record;
try {
while(true) {
record = in.take();
if (record == poison) {
Log.logInfo("WIKITRANSLATION", "convertConsumer / got poison");
break;
}
if (osw == null) {
// start writing a new file
this.outputfilename = targetstub + "." + fc + ".xml.prt";
this.osw = new OutputStreamWriter(new BufferedOutputStream(new FileOutputStream(new File(targetdir, outputfilename))), "UTF-8");
osw.write("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<surrogates xmlns:dc=\"http://purl.org/dc/elements/1.1/\">\n");
}
Log.logInfo("WIKITRANSLATION", "[CONSUME] Title: " + record.title);
record.document.writeXML(osw, new Date());
rc++;
if (rc >= 10000) {
osw.write("</surrogates>\n");
osw.close();
String finalfilename = targetstub + "." + fc + ".xml";
new File(targetdir, outputfilename).renameTo(new File(targetdir, finalfilename));
rc = 0;
fc++;
outputfilename = targetstub + "." + fc + ".xml.prt";
osw = new OutputStreamWriter(new BufferedOutputStream(new FileOutputStream(new File(targetdir, outputfilename))), "UTF-8");
osw.write("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<surrogates xmlns:dc=\"http://purl.org/dc/elements/1.1/\">\n");
}
}
} catch (InterruptedException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
osw.write("</surrogates>\n");
osw.close();
String finalfilename = targetstub + "." + fc + ".xml";
new File(targetdir, outputfilename).renameTo(new File(targetdir, finalfilename));
} catch (IOException e) {
e.printStackTrace();
}
}
Log.logInfo("WIKITRANSLATION", "*** convertWriter has terminated");
return Integer.valueOf(0);
}
}
public static void main(String[] s) {
if (s.length == 0) {
Log.logInfo("WIKITRANSLATION", "usage:");
Log.logInfo("WIKITRANSLATION", " -index <wikipedia-dump>");
Log.logInfo("WIKITRANSLATION", " -read <start> <len> <idx-file>");
Log.logInfo("WIKITRANSLATION", " -find <title> <wikipedia-dump>");
Log.logInfo("WIKITRANSLATION", " -convert <wikipedia-dump-xml.bz2> <convert-target-dir> <url-stub>");
System.exit(0);
}
// example:
// java -Xmx2000m -cp classes:lib/bzip2.jar de.anomic.tools.mediawikiIndex -convert DATA/HTCACHE/dewiki-20090311-pages-articles.xml.bz2 DATA/SURROGATES/in/ http://de.wikipedia.org/wiki/
if (s[0].equals("-convert") && s.length > 2 && s[1].endsWith(".xml.bz2") && s[3].startsWith("http://")) {
File sourcefile = new File(s[1]);
File targetdir = new File(s[2]);
String urlStub = s[3]; // i.e. http://de.wikipedia.org/wiki/
//String language = urlStub.substring(7,9);
try {
mediawikiIndex mi = new mediawikiIndex(sourcefile, targetdir, urlStub);
mi.start();
mi.join();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
if (s[0].equals("-index")) {
try {
createIndex(new File(s[1]));
} catch (IOException e) {
e.printStackTrace();
}
}
if (s[0].equals("-read")) {
long start = Integer.parseInt(s[1]);
int len = Integer.parseInt(s[2]);
try {
System.out.println(new String(read(new File(s[3]), start, len), "UTF-8"));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
if (s[0].equals("-find")) {
try {
wikisourcerecord w = find(s[1], new File(s[2] + ".idx.xml"));
if (w == null) {
Log.logInfo("WIKITRANSLATION", "not found");
} else {
System.out.println(new String(read(new File(s[2]), w.start, (int) (w.end - w.start)), "UTF-8"));
}
} catch (IOException e) {
e.printStackTrace();
}
}
System.exit(0);
}
}