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211 lines
8.8 KiB
211 lines
8.8 KiB
// plasmaParserConfig.java
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// -------------------------------------
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// part of YACY
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// (C) by Michael Peter Christen; mc@anomic.de
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2004
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//
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// This file ist contributed by Martin Thelian
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//
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// $LastChangedDate: 2006-02-20 23:57:42 +0100 (Mo, 20 Feb 2006) $
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// $LastChangedRevision: 1715 $
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// $LastChangedBy: theli $
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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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//
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// Using this software in any meaning (reading, learning, copying, compiling,
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// running) means that you agree that the Author(s) is (are) not responsible
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// for cost, loss of data or any harm that may be caused directly or indirectly
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// by usage of this softare or this documentation. The usage of this software
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// is on your own risk. The installation and usage (starting/running) of this
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// software may allow other people or application to access your computer and
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// any attached devices and is highly dependent on the configuration of the
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// software which must be done by the user of the software; the author(s) is
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// (are) also not responsible for proper configuration and usage of the
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// software, even if provoked by documentation provided together with
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// the software.
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//
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// Any changes to this file according to the GPL as documented in the file
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// gpl.txt aside this file in the shipment you received can be done to the
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// lines that follows this copyright notice here, but changes must not be
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// done inside the copyright notive above. A re-distribution must contain
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// the intact and unchanged copyright notice.
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// Contributions and changes to the program code must be marked as such.
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package de.anomic.plasma;
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import java.util.Arrays;
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import java.util.Enumeration;
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import java.util.HashSet;
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import java.util.Hashtable;
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import java.util.Iterator;
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import java.util.Set;
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import de.anomic.plasma.parser.Parser;
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import de.anomic.plasma.parser.ParserInfo;
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import de.anomic.server.logging.serverLog;
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import de.anomic.yacy.yacyURL;
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public class plasmaParserConfig {
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/**
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* A list containing all enabled parsers and the mimeType that they can handle
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* @see #loadEnabledParserList()
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* @see #setEnabledParserList(Enumeration)
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*/
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final HashSet<String> enabledParserList = new HashSet<String>();
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/**
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* A list of file extensions that are supported by all enabled parsers
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*/
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final HashSet<String> supportedFileExt = new HashSet<String>();
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/**
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* Parsermode this configuration belongs to
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*/
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public String parserMode = null;
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public plasmaParserConfig(String theParserMode) {
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if (!plasmaParser.PARSER_MODE.contains(theParserMode)) {
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throw new IllegalArgumentException("Unknown parser mode " + theParserMode);
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}
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this.parserMode = theParserMode;
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}
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public boolean supportedContent(yacyURL url, String mimeType) {
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// TODO: we need some exceptions here to index URLs like this
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// http://www.musicabona.com/respighi/12668/cd/index.html.fr
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mimeType = plasmaParser.normalizeMimeType(mimeType);
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if (
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mimeType.equals("text/html") ||
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mimeType.equals("application/xhtml+xml") ||
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mimeType.equals("text/plain")
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) {
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return supportedMimeTypesContains(mimeType);
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}
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return supportedMimeTypesContains(mimeType) && supportedFileExt(url);
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}
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public boolean supportedMimeTypesContains(String mimeType) {
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mimeType = plasmaParser.normalizeMimeType(mimeType);
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synchronized (plasmaParser.supportedHTMLMimeTypes) {
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if (plasmaParser.supportedHTMLMimeTypes.contains(mimeType)) return true;
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}
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synchronized (this.enabledParserList) {
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return this.enabledParserList.contains(mimeType);
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}
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}
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public boolean supportedFileExt(yacyURL url) {
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if (url == null) throw new NullPointerException();
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// getting the file path
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String name = plasmaParser.getFileExt(url);
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return supportedFileExtContains(name);
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}
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public boolean supportedFileExtContains(String fileExt) {
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if (fileExt == null) return false;
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fileExt = fileExt.trim().toLowerCase();
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synchronized (plasmaParser.supportedHTMLFileExt) {
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if (plasmaParser.supportedHTMLFileExt.contains(fileExt)) return true;
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}
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synchronized(this.supportedFileExt) {
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return this.supportedFileExt.contains(fileExt);
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}
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}
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public void initParseableMimeTypes(String enabledMimeTypes) {
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HashSet<String> mimeTypes = null;
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if ((enabledMimeTypes == null) || (enabledMimeTypes.length() == 0)) {
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mimeTypes = new HashSet<String>();
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} else {
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String[] enabledMimeTypeList = enabledMimeTypes.split(",");
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mimeTypes = new HashSet<String>(enabledMimeTypeList.length);
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for (int i = 0; i < enabledMimeTypeList.length; i++) mimeTypes.add(enabledMimeTypeList[i].toLowerCase().trim());
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}
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setEnabledParserList(mimeTypes);
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}
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public void enableAllParsers() {
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Set<String> availableMimeTypes = plasmaParser.availableParserList.keySet();
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setEnabledParserList(availableMimeTypes);
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}
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public String[] setEnabledParserList(Set<String> mimeTypeSet) {
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HashSet<String> newEnabledParsers = new HashSet<String>();
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HashSet<String> newSupportedFileExt = new HashSet<String>();
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if (mimeTypeSet != null) {
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Iterator<String> mimeTypes = mimeTypeSet.iterator();
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while (mimeTypes.hasNext()) {
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String mimeType = (String) mimeTypes.next();
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if (plasmaParser.availableParserList.containsKey(mimeType)) {
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Parser theParser = null;
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try {
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// getting the parser
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theParser = plasmaParser.makeParser(((ParserInfo)plasmaParser.availableParserList.get(mimeType)).parserClassName);
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// getting a list of mimeTypes that the parser supports
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Hashtable<String, String> parserSupportsMimeTypes = theParser.getSupportedMimeTypes();
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if (parserSupportsMimeTypes != null) {
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Object supportedExtensions = parserSupportsMimeTypes.get(mimeType);
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if ((supportedExtensions != null) &&
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(supportedExtensions instanceof String) &&
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(((String)supportedExtensions).length() > 0)) {
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String[] extArray = ((String)supportedExtensions).split(",");
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newSupportedFileExt.addAll(Arrays.asList(extArray));
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}
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}
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newEnabledParsers.add(mimeType);
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} catch (Exception e) {
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serverLog.logSevere("PARSER", "error in setEnabledParserList", e);
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} finally {
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if (theParser != null)
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theParser = null; // destroy object
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}
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}
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}
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}
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synchronized (this.enabledParserList) {
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this.enabledParserList.clear();
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this.enabledParserList.addAll(newEnabledParsers);
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}
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synchronized (this.supportedFileExt) {
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this.supportedFileExt.clear();
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this.supportedFileExt.addAll(newSupportedFileExt);
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}
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return (String[])newEnabledParsers.toArray(new String[newEnabledParsers.size()]);
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}
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@SuppressWarnings("unchecked")
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public HashSet<String> getEnabledParserList() {
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synchronized (this.enabledParserList) {
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return (HashSet<String>) this.enabledParserList.clone();
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}
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}
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} |