*) adding content parser for - pdf (using the pdf-box library) - doc (using the textmining.org library) *) adding a Interface for content parsers *) adding a configuration file which can be used to configure which parser is used for which mimeType *) Sempahore class was moved and renamed to serverSemaphore *) Changing yacy shutdown behaviour Buzy waiting loop for shutdown was removed and replaced with a blocking call (using the semaphore class mentioned above) to the new switchboard.waitForShutdown method. git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@46 6c8d7289-2bf4-0310-a012-ef5d649a1542pull/1/head
theli
20 years ago
parent
17d993cfee
commit
58b1a0ba40
@ -0,0 +1,59 @@
|
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/*
|
||||
* Check4Update is a stand-alone server application that can be used to
|
||||
* monitor various types of online resources for updates and changes and
|
||||
* notifies the user if a modification was detected.
|
||||
*
|
||||
* Copyright (C) 2005 Martin Thelian
|
||||
*
|
||||
* 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
|
||||
*
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||||
* For more information, please email thelian@users.sourceforge.net
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||||
*
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||||
*/
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||||
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||||
/* =======================================================================
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||||
* Revision Control Information
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||||
* $Source: $
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||||
* $Author: $
|
||||
* $Date: $
|
||||
* $Revision: $
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* ======================================================================= */
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package de.anomic.plasma.parser;
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import java.io.File;
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import java.io.InputStream;
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import java.net.URL;
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import java.util.HashSet;
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import de.anomic.plasma.plasmaParserDocument;
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public interface Parser {
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public plasmaParserDocument parse(URL location, String mimeType, byte[] source)
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throws ParserException;
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public plasmaParserDocument parse(URL location, String mimeType, File sourceFile)
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throws ParserException;
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public plasmaParserDocument parse(URL location, String mimeType, InputStream source)
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throws ParserException;
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public HashSet getSupportedMimeTypes();
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public void reset();
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}
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@ -0,0 +1,21 @@
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package de.anomic.plasma.parser;
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public class ParserException extends Exception
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{
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public ParserException() {
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super();
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}
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public ParserException(String message) {
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super(message);
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}
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public ParserException(String message, Throwable cause) {
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super(message, cause);
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}
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public ParserException(Throwable cause) {
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super(cause);
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}
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}
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@ -0,0 +1,127 @@
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/*
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* Check4Update is a stand-alone server application that can be used to
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* monitor various types of online resources for updates and changes and
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* notifies the user if a modification was detected.
|
||||
*
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* Copyright (C) 2005 Martin Thelian
|
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*
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* 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,
|
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* For more information, please email thelian@users.sourceforge.net
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*
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*/
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/* =======================================================================
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* Revision Control Information
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* $Source: $
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* $Author: $
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* $Date: $
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* $Revision: $
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* ======================================================================= */
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package de.anomic.plasma.parser.doc;
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import java.io.BufferedInputStream;
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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.InputStream;
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import java.net.URL;
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import java.util.Arrays;
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import java.util.HashSet;
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import org.textmining.text.extraction.WordExtractor;
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import de.anomic.plasma.plasmaParserDocument;
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import de.anomic.plasma.parser.Parser;
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import de.anomic.plasma.parser.ParserException;
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public class docParser implements Parser {
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/**
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* a list of mime types that are supported by this parser class
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*/
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public static final HashSet<String> SUPPORTED_MIME_TYPES = new HashSet<String>(Arrays.asList(new String[] {
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new String("application/msword")
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}));
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public docParser() {
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super();
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}
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public plasmaParserDocument parse(URL location, String mimeType,
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byte[] source) throws ParserException {
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ByteArrayInputStream contentInputStream = new ByteArrayInputStream(source);
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return this.parse(location,mimeType,contentInputStream);
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}
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public plasmaParserDocument parse(URL location, String mimeType,
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File sourceFile) throws ParserException {
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BufferedInputStream contentInputStream = null;
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try {
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contentInputStream = new BufferedInputStream(new FileInputStream(sourceFile));
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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}
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return this.parse(location, mimeType, contentInputStream);
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}
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public plasmaParserDocument parse(URL location, String mimeType,
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InputStream source) throws ParserException {
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try {
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WordExtractor extractor = new WordExtractor();
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String contents = extractor.extractText(source);
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plasmaParserDocument theDoc = new plasmaParserDocument(
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location,
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mimeType,
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null,
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null,
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null,
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null,
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null,
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contents.getBytes(),
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null,
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null);
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return theDoc;
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}
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catch (Exception e) {
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throw new ParserException("Unable to parse the doc content. " + e.getMessage());
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}
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}
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public HashSet getSupportedMimeTypes() {
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return docParser.SUPPORTED_MIME_TYPES;
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}
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public void reset() {
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// TODO Auto-generated method stub
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}
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/**
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* @param args
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*/
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public static void main(String[] args) {
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// TODO Auto-generated method stub
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}
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}
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@ -0,0 +1,119 @@
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package de.anomic.plasma.parser.pdf;
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import java.io.BufferedInputStream;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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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.InputStream;
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import java.io.OutputStreamWriter;
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import java.net.URL;
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import java.util.Arrays;
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import java.util.HashSet;
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import org.pdfbox.pdfparser.PDFParser;
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import org.pdfbox.pdmodel.PDDocument;
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import org.pdfbox.pdmodel.PDDocumentInformation;
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import org.pdfbox.util.PDFTextStripper;
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import de.anomic.plasma.plasmaParserDocument;
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import de.anomic.plasma.parser.Parser;
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import de.anomic.plasma.parser.ParserException;
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public class pdfParser implements Parser
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{
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/**
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* a list of mime types that are supported by this parser class
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*/
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public static final HashSet<String> SUPPORTED_MIME_TYPES = new HashSet<String>(Arrays.asList(new String[] {
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new String("application/pdf")
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}));
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public pdfParser() {
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super();
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}
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public HashSet getSupportedMimeTypes() {
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return SUPPORTED_MIME_TYPES;
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}
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public plasmaParserDocument parse(URL location, String mimeType, File sourceFile) throws ParserException {
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BufferedInputStream contentInputStream = null;
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try {
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contentInputStream = new BufferedInputStream(new FileInputStream(sourceFile));
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} catch (FileNotFoundException e) {
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e.printStackTrace();
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}
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return this.parse(location, mimeType, contentInputStream);
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}
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public plasmaParserDocument parse(URL location, String mimeType, byte[] source) throws ParserException {
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ByteArrayInputStream contentInputStream = new ByteArrayInputStream(source);
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return this.parse(location,mimeType,contentInputStream);
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}
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public plasmaParserDocument parse(URL location, String mimeType, InputStream source) throws ParserException {
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try {
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String docTitle = null, docSubject = null, docAuthor = null, docKeyWords = null;
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PDFParser parser = new PDFParser(source);
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parser.parse();
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PDFTextStripper stripper = new PDFTextStripper();
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PDDocument theDocument = parser.getPDDocument();
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PDDocumentInformation theDocInfo = theDocument.getDocumentInformation();
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if (theDocInfo != null)
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{
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docTitle = theDocInfo.getTitle();
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docSubject = theDocInfo.getSubject();
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docAuthor = theDocInfo.getAuthor();
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docKeyWords = theDocInfo.getKeywords();
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}
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ByteArrayOutputStream out = new ByteArrayOutputStream();
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OutputStreamWriter writer = new OutputStreamWriter( out );
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stripper.writeText(theDocument, writer );
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writer.close();
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theDocument.close();
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byte[] contents = out.toByteArray();
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/*
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* public document(URL location, String mimeType,
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String keywords, String shortTitle, String longTitle,
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String[] sections, String abstrct,
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byte[] text, Map anchors, Map images) {
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*
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*/
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plasmaParserDocument theDoc = new plasmaParserDocument(
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location,
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mimeType,
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docKeyWords,
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docSubject,
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docTitle,
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null,
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null,
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contents,
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null,
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null);
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return theDoc;
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}
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catch (Exception e) {
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throw new ParserException("Unable to parse the pdf content. " + e.getMessage());
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}
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}
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public void reset() {
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// TODO Auto-generated method stub
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}
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}
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@ -0,0 +1,192 @@
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/*
|
||||
* Check4Update is a stand-alone server application that can be used to
|
||||
* monitor various types of online resources for updates and changes and
|
||||
* notifies the user if a modification was detected.
|
||||
*
|
||||
* Copyright (C) 2005 Martin Thelian
|
||||
*
|
||||
* 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
|
||||
*
|
||||
* For more information, please email thelian@users.sourceforge.net
|
||||
*
|
||||
*/
|
||||
|
||||
/* =======================================================================
|
||||
* Revision Control Information
|
||||
* $Source: $
|
||||
* $Author: $
|
||||
* $Date: $
|
||||
* $Revision: $
|
||||
* ======================================================================= */
|
||||
|
||||
package de.anomic.plasma;
|
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|
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import java.net.URL;
|
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.Map;
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|
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public class plasmaParserDocument {
|
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|
||||
URL location; // the source url
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||||
String mimeType; // mimeType as taken from http header
|
||||
String keywords; // most resources provide a keyword field
|
||||
String shortTitle; // a shortTitle mostly appears in the window header (border)
|
||||
String longTitle; // the real title of the document, commonly h1-tags
|
||||
String[] sections; // if present: more titles/headlines appearing in the document
|
||||
String abstrct; // an abstract, if present: short content description
|
||||
byte[] text; // the clear text, all that is visible
|
||||
Map anchors; // all links embedded as clickeable entities (anchor tags)
|
||||
Map images; // all visible pictures in document
|
||||
// the anchors and images - Maps are URL-to-EntityDescription mappings.
|
||||
// The EntityDescription appear either as visible text in anchors or as alternative
|
||||
// text in image tags.
|
||||
Map hyperlinks;
|
||||
Map medialinks;
|
||||
Map emaillinks;
|
||||
|
||||
public plasmaParserDocument(URL location, String mimeType,
|
||||
String keywords, String shortTitle, String longTitle,
|
||||
String[] sections, String abstrct,
|
||||
byte[] text, Map anchors, Map images) {
|
||||
this.location = location;
|
||||
this.mimeType = mimeType;
|
||||
this.keywords = keywords;
|
||||
this.shortTitle = shortTitle;
|
||||
this.longTitle = longTitle;
|
||||
this.sections = sections;
|
||||
this.abstrct = abstrct;
|
||||
this.text = text;
|
||||
this.anchors = (anchors==null)?new HashMap():anchors;
|
||||
this.images = (images==null)?new HashMap():images;
|
||||
this.hyperlinks = null;
|
||||
this.medialinks = null;
|
||||
this.emaillinks = null;
|
||||
}
|
||||
|
||||
private String absolutePath(String relativePath) {
|
||||
try {
|
||||
return plasmaParser.urlNormalform(new URL(location, relativePath));
|
||||
} catch (Exception e) {
|
||||
return "";
|
||||
}
|
||||
}
|
||||
|
||||
public String getMainShortTitle() {
|
||||
if (shortTitle != null) return shortTitle; else return longTitle;
|
||||
}
|
||||
|
||||
public String getMainLongTitle() {
|
||||
if (longTitle != null) return longTitle; else return shortTitle;
|
||||
}
|
||||
|
||||
public String[] getSectionTitles() {
|
||||
if (sections != null) return sections; else return new String[]{getMainLongTitle()};
|
||||
}
|
||||
|
||||
public String getAbstract() {
|
||||
if (abstrct != null) return abstrct; else return getMainLongTitle();
|
||||
}
|
||||
|
||||
public byte[] getText() {
|
||||
// returns only the clear (visible) text (not the source data)
|
||||
return text;
|
||||
}
|
||||
|
||||
public Map getAnchors() {
|
||||
// returns all links embedded as anchors (clickeable entities)
|
||||
return anchors;
|
||||
}
|
||||
|
||||
public Map getImages() {
|
||||
// returns all links enbedded as pictures (visible iin document)
|
||||
return images;
|
||||
}
|
||||
|
||||
// the next three methods provide a calculated view on the getAnchors/getImages:
|
||||
|
||||
public Map getHyperlinks() {
|
||||
// this is a subset of the getAnchor-set: only links to other hyperrefs
|
||||
if (hyperlinks == null) resortLinks();
|
||||
return hyperlinks;
|
||||
}
|
||||
|
||||
public Map getMedialinks() {
|
||||
// this is partly subset of getAnchor and getImage: all non-hyperrefs
|
||||
if (medialinks == null) resortLinks();
|
||||
return medialinks;
|
||||
}
|
||||
|
||||
public Map getEmaillinks() {
|
||||
// this is part of the getAnchor-set: only links to email addresses
|
||||
if (emaillinks == null) resortLinks();
|
||||
return emaillinks;
|
||||
}
|
||||
|
||||
private synchronized void resortLinks() {
|
||||
Iterator i;
|
||||
String url;
|
||||
int extpos;
|
||||
String ext;
|
||||
i = anchors.entrySet().iterator();
|
||||
hyperlinks = new HashMap();
|
||||
medialinks = new HashMap();
|
||||
emaillinks = new HashMap();
|
||||
Map.Entry entry;
|
||||
while (i.hasNext()) {
|
||||
entry = (Map.Entry) i.next();
|
||||
url = (String) entry.getKey();
|
||||
if ((url != null) && (url.startsWith("mailto:"))) {
|
||||
emaillinks.put(url.substring(7), entry.getValue());
|
||||
} else {
|
||||
extpos = url.lastIndexOf(".");
|
||||
String normal;
|
||||
if (extpos > 0) {
|
||||
ext = url.substring(extpos).toLowerCase();
|
||||
normal = plasmaParser.urlNormalform(url);
|
||||
if (normal != null) {
|
||||
if (plasmaParser.mediaExt.indexOf(ext.substring(1)) >= 0) {
|
||||
// this is not an normal anchor, its a media link
|
||||
medialinks.put(normal, entry.getValue());
|
||||
} else {
|
||||
hyperlinks.put(normal, entry.getValue());
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
// finally add the images to the medialinks
|
||||
i = images.entrySet().iterator();
|
||||
String normal;
|
||||
while (i.hasNext()) {
|
||||
entry = (Map.Entry) i.next();
|
||||
url = (String) entry.getKey();
|
||||
normal = plasmaParser.urlNormalform(url);
|
||||
if (normal != null) medialinks.put(normal, entry.getValue()); // avoid NullPointerException
|
||||
}
|
||||
expandHyperlinks();
|
||||
}
|
||||
|
||||
|
||||
public synchronized void expandHyperlinks() {
|
||||
// we add artificial hyperlinks to the hyperlink set that can be calculated from
|
||||
// given hyperlinks and imagelinks
|
||||
hyperlinks.putAll(plasmaParser.allReflinks(hyperlinks));
|
||||
hyperlinks.putAll(plasmaParser.allReflinks(medialinks));
|
||||
hyperlinks.putAll(plasmaParser.allSubpaths(hyperlinks));
|
||||
hyperlinks.putAll(plasmaParser.allSubpaths(medialinks));
|
||||
}
|
||||
|
||||
}
|
||||
@ -0,0 +1,104 @@
|
||||
//serverSemaphore.java
|
||||
//------------------------
|
||||
//part of YaCy
|
||||
//(C) by Michael Peter Christen; mc@anomic.de
|
||||
//first published on http://www.anomic.de
|
||||
//Frankfurt, Germany, 2005
|
||||
//
|
||||
//this file is contributed by Martin Thelian
|
||||
//last major change: 24.04.2005
|
||||
//
|
||||
//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
|
||||
//
|
||||
//Using this software in any meaning (reading, learning, copying, compiling,
|
||||
//running) means that you agree that the Author(s) is (are) not responsible
|
||||
//for cost, loss of data or any harm that may be caused directly or indirectly
|
||||
//by usage of this softare or this documentation. The usage of this software
|
||||
//is on your own risk. The installation and usage (starting/running) of this
|
||||
//software may allow other people or application to access your computer and
|
||||
//any attached devices and is highly dependent on the configuration of the
|
||||
//software which must be done by the user of the software; the author(s) is
|
||||
//(are) also not responsible for proper configuration and usage of the
|
||||
//software, even if provoked by documentation provided together with
|
||||
//the software.
|
||||
//
|
||||
//Any changes to this file according to the GPL as documented in the file
|
||||
//gpl.txt aside this file in the shipment you received can be done to the
|
||||
//lines that follows this copyright notice here, but changes must not be
|
||||
//done inside the copyright notive above. A re-distribution must contain
|
||||
//the intact and unchanged copyright notice.
|
||||
//Contributions and changes to the program code must be marked as such.
|
||||
|
||||
package de.anomic.server;
|
||||
|
||||
public final class serverSemaphore {
|
||||
private long currentValue = 0;
|
||||
private long maximumValue = Long.MAX_VALUE;
|
||||
|
||||
protected serverSemaphore() {
|
||||
this(0,Long.MAX_VALUE);
|
||||
}
|
||||
|
||||
public serverSemaphore(long initialValue) {
|
||||
this(initialValue,Long.MAX_VALUE);
|
||||
}
|
||||
|
||||
protected serverSemaphore(long initialValue, long maxValue) {
|
||||
/* some errorhandling */
|
||||
if (maxValue < initialValue) {
|
||||
throw new IllegalArgumentException("The semaphore maximum value must not be " +
|
||||
"greater than the semaphore init value.");
|
||||
}
|
||||
|
||||
if (maxValue < 1) {
|
||||
throw new IllegalArgumentException("The semaphore maximum value must be greater or equal 1.");
|
||||
}
|
||||
|
||||
if (initialValue < 0) {
|
||||
throw new IllegalArgumentException("The semaphore initial value must be greater or equal 0.");
|
||||
}
|
||||
|
||||
|
||||
// setting the initial Sempahore Values
|
||||
this.currentValue = initialValue;
|
||||
this.maximumValue = maxValue;
|
||||
}
|
||||
|
||||
public synchronized void P() throws InterruptedException
|
||||
{
|
||||
this.currentValue-- ;
|
||||
|
||||
if (this.currentValue < 0) {
|
||||
try {
|
||||
wait();
|
||||
} catch(InterruptedException e) {
|
||||
this.currentValue++;
|
||||
throw e;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
public synchronized void V() {
|
||||
if (this.currentValue+1 == this.maximumValue) {
|
||||
throw new IndexOutOfBoundsException("The maximum value of the semaphore was reached");
|
||||
}
|
||||
|
||||
this.currentValue++;
|
||||
|
||||
if (this.currentValue <= 0) {
|
||||
notify();
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -0,0 +1 @@
|
||||
application/pdf=de.anomic.plasma.parser.pdf.pdfParser
|
||||
Loading…
Reference in new issue