You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
222 lines
8.2 KiB
222 lines
8.2 KiB
// SurrogateReader.java
|
|
// (C) 2009 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
|
|
// first published 15.04.2009 on http://yacy.net
|
|
//
|
|
// $LastChangedDate$
|
|
// $LastChangedRevision$
|
|
// $LastChangedBy$
|
|
//
|
|
// 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 net.yacy.document.content;
|
|
|
|
import java.io.BufferedInputStream;
|
|
import java.io.BufferedReader;
|
|
import java.io.File;
|
|
import java.io.FileInputStream;
|
|
import java.io.IOException;
|
|
import java.io.InputStream;
|
|
import java.io.InputStreamReader;
|
|
import java.io.Reader;
|
|
import java.util.concurrent.ArrayBlockingQueue;
|
|
import java.util.concurrent.BlockingQueue;
|
|
import java.util.zip.GZIPInputStream;
|
|
|
|
import javax.xml.parsers.ParserConfigurationException;
|
|
import javax.xml.parsers.SAXParser;
|
|
import javax.xml.parsers.SAXParserFactory;
|
|
|
|
|
|
import net.yacy.kelondro.logging.Log;
|
|
|
|
import org.xml.sax.Attributes;
|
|
import org.xml.sax.InputSource;
|
|
import org.xml.sax.SAXException;
|
|
import org.xml.sax.SAXParseException;
|
|
import org.xml.sax.helpers.DefaultHandler;
|
|
|
|
|
|
public class SurrogateReader extends DefaultHandler implements Runnable {
|
|
|
|
// definition of the surrogate main element
|
|
public final static String SURROGATES_MAIN_ELEMENT_NAME =
|
|
"surrogates";
|
|
public final static String SURROGATES_MAIN_ELEMENT_OPEN =
|
|
"<" + SURROGATES_MAIN_ELEMENT_NAME +
|
|
" xmlns:dc=\"http://purl.org/dc/elements/1.1/\"" +
|
|
" xmlns:yacy=\"http://yacy.net/\"" +
|
|
" xmlns:geo=\"http://www.w3.org/2003/01/geo/wgs84_pos#\">";
|
|
public final static String SURROGATES_MAIN_ELEMENT_CLOSE =
|
|
"</" + SURROGATES_MAIN_ELEMENT_NAME + ">";
|
|
|
|
// class variables
|
|
private final StringBuilder buffer;
|
|
private boolean parsingValue;
|
|
private DCEntry surrogate;
|
|
private String elementName;
|
|
private final BlockingQueue<DCEntry> surrogates;
|
|
private SAXParser saxParser;
|
|
private final InputSource inputSource;
|
|
private final InputStream inputStream;
|
|
|
|
public SurrogateReader(final InputStream stream, int queueSize) throws IOException {
|
|
this.buffer = new StringBuilder(300);
|
|
this.parsingValue = false;
|
|
this.surrogate = null;
|
|
this.elementName = null;
|
|
this.surrogates = new ArrayBlockingQueue<DCEntry>(queueSize);
|
|
|
|
Reader reader = new BufferedReader(new InputStreamReader(stream, "UTF-8"));
|
|
this.inputSource = new InputSource(reader);
|
|
this.inputSource.setEncoding("UTF-8");
|
|
this.inputStream = stream;
|
|
|
|
final SAXParserFactory factory = SAXParserFactory.newInstance();
|
|
try {
|
|
this.saxParser = factory.newSAXParser();
|
|
} catch (ParserConfigurationException e) {
|
|
Log.logException(e);
|
|
throw new IOException(e.getMessage());
|
|
} catch (SAXException e) {
|
|
Log.logException(e);
|
|
throw new IOException(e.getMessage());
|
|
}
|
|
}
|
|
|
|
public void run() {
|
|
try {
|
|
this.saxParser.parse(this.inputSource, this);
|
|
} catch (SAXParseException e) {
|
|
Log.logException(e);
|
|
} catch (SAXException e) {
|
|
Log.logException(e);
|
|
} catch (IOException e) {
|
|
Log.logException(e);
|
|
} finally {
|
|
try {
|
|
this.surrogates.put(DCEntry.poison);
|
|
} catch (InterruptedException e1) {
|
|
Log.logException(e1);
|
|
}
|
|
try {
|
|
this.inputStream.close();
|
|
} catch (IOException e) {
|
|
Log.logException(e);
|
|
}
|
|
}
|
|
}
|
|
|
|
public void startElement(final String uri, final String name, String tag, final Attributes atts) throws SAXException {
|
|
if (tag == null) return;
|
|
tag = tag.toLowerCase();
|
|
if ("record".equals(tag) || "document".equals(tag)) {
|
|
this.surrogate = new DCEntry();
|
|
} else if ("element".equals(tag)) {
|
|
this.elementName = atts.getValue("name");
|
|
} else if ("value".equals(tag)) {
|
|
this.buffer.setLength(0);
|
|
this.parsingValue = true;
|
|
} else if (tag.startsWith("dc:") || tag.startsWith("geo:")) {
|
|
// parse dublin core attribute
|
|
this.elementName = tag;
|
|
this.parsingValue = true;
|
|
}
|
|
}
|
|
|
|
public void endElement(final String uri, final String name, String tag) {
|
|
if (tag == null) return;
|
|
tag = tag.toLowerCase();
|
|
if ("record".equals(tag) || "document".equals(tag)) {
|
|
//System.out.println("A Title: " + this.surrogate.title());
|
|
try {
|
|
this.surrogates.put(this.surrogate);
|
|
} catch (InterruptedException e) {
|
|
Log.logException(e);
|
|
} finally {
|
|
//System.out.println("B Title: " + this.surrogate.title());
|
|
this.surrogate = null;
|
|
this.buffer.setLength(0);
|
|
this.parsingValue = false;
|
|
}
|
|
} else if ("element".equals(tag)) {
|
|
this.buffer.setLength(0);
|
|
this.parsingValue = false;
|
|
} else if ("value".equals(tag)) {
|
|
//System.out.println("BUFFER-SIZE=" + buffer.length());
|
|
final String value = buffer.toString().trim();
|
|
if (this.elementName != null) {
|
|
this.surrogate.put(this.elementName, value);
|
|
}
|
|
this.buffer.setLength(0);
|
|
this.parsingValue = false;
|
|
} else if (tag.startsWith("dc:") || tag.startsWith("geo:")) {
|
|
final String value = buffer.toString().trim();
|
|
if (this.elementName != null && tag.equals(this.elementName)) {
|
|
value.replaceAll(";", ",");
|
|
String oldcontent = this.surrogate.get(this.elementName);
|
|
if (oldcontent == null) {
|
|
this.surrogate.put(this.elementName, value);
|
|
} else {
|
|
this.surrogate.put(this.elementName, oldcontent + ";" + value);
|
|
}
|
|
}
|
|
this.buffer.setLength(0);
|
|
this.parsingValue = false;
|
|
}
|
|
}
|
|
|
|
public void characters(final char ch[], final int start, final int length) {
|
|
if (parsingValue) {
|
|
buffer.append(ch, start, length);
|
|
}
|
|
}
|
|
|
|
public DCEntry take() {
|
|
try {
|
|
return this.surrogates.take();
|
|
} catch (InterruptedException e) {
|
|
Log.logException(e);
|
|
return null;
|
|
}
|
|
}
|
|
|
|
public static void main(String[] args) {
|
|
File f = new File(args[0]);
|
|
SurrogateReader sr;
|
|
try {
|
|
InputStream is = new BufferedInputStream(new FileInputStream(f));
|
|
if (f.getName().endsWith(".gz")) is = new GZIPInputStream(is);
|
|
sr = new SurrogateReader(is, 1);
|
|
|
|
Thread t = new Thread(sr, "Surrogate-Reader " + f.getAbsolutePath());
|
|
t.start();
|
|
DCEntry s;
|
|
while ((s = sr.take()) != DCEntry.poison) {
|
|
System.out.println("Title: " + s.getTitle());
|
|
System.out.println("Date: " + s.getDate());
|
|
System.out.println("Creator: " + s.getCreator());
|
|
System.out.println("Publisher: " + s.getPublisher());
|
|
System.out.println("URL: " + s.getIdentifier(true));
|
|
System.out.println("Language: " + s.getLanguage());
|
|
System.out.println("Body: " + s.getDescription());
|
|
}
|
|
} catch (IOException e) {
|
|
Log.logException(e);
|
|
}
|
|
}
|
|
}
|