- better mimetype detection for rss feeds - better mimetype detection for odt documents (less memory consuming) - two new detector classes implementing MagicDetector interface of jmimemagic git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2650 6c8d7289-2bf4-0310-a012-ef5d649a1542pull/1/head
theli
19 years ago
parent
3f5a4153a0
commit
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//odtDetector.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, 2005
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//
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//this file is contributed by Martin Thelian
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//last major change: 16.05.2005
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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.parser.mimeType;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.Map;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipFile;
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import net.sf.jmimemagic.MagicDetector;
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import de.anomic.server.serverFileUtils;
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public class odtDetector implements MagicDetector {
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public String getDisplayName() {
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return "ODT MimeType Detector";
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}
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public String[] getHandledExtensions() {
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return new String[]{"zip","odt"};
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}
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public String[] getHandledTypes() {
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return new String[] { "application/vnd.oasis.opendocument.text", "application/x-vnd.oasis.opendocument.text" };
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}
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public String getName() {
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return "odtfiledetector";
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}
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public String getVersion() {
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return "0.1";
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}
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public String[] process(byte[] data, int offset, int length, long bitmask, char comparator, String mimeType, Map params) {
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File dstFile = null;
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try {
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dstFile = File.createTempFile("mimeTypeParser",".tmp");
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serverFileUtils.write(data,dstFile);
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return process(dstFile, offset, length, bitmask, comparator, mimeType, params);
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} catch (IOException e) {
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return null;
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} finally {
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if (dstFile != null) {dstFile.delete();}
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}
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}
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public String[] process(File file, int offset, int length, long bitmask, char comparator, String mimeType, Map params) {
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try {
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// opening the zip file
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ZipFile zipFile = new ZipFile(file);
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// searching for a file named mimetype
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ZipEntry mimeTypeInfo = zipFile.getEntry("mimetype");
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if (mimeTypeInfo == null) return null;
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// read in the content of the file
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InputStream zippedContent = zipFile.getInputStream(mimeTypeInfo);
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String realMimeType = new String(serverFileUtils.read(zippedContent, mimeTypeInfo.getSize()));
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return new String[]{realMimeType};
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} catch (Exception e) {
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return null;
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}
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}
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}
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@ -0,0 +1,118 @@
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//rssDetector.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, 2005
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//
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//this file is contributed by Martin Thelian
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//last major change: 16.05.2005
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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.parser.mimeType;
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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.InputStream;
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import java.lang.reflect.Method;
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import java.util.Map;
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import net.sf.jmimemagic.MagicDetector;
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public class rssDetector implements MagicDetector {
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public String getDisplayName() {
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return "RSS MimeType Detector";
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}
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public String[] getHandledExtensions() {
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return new String[]{"xml","rss","rdf","atom"};
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}
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public String[] getHandledTypes() {
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return new String[] { "text/rss", "application/rdf+xml", "application/rss+xml", "application/atom+xml" };
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}
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public String getName() {
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return "rssfiledetector";
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}
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public String getVersion() {
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return "0.1";
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}
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public String[] process(File file, int offset, int length, long bitmask, char comparator, String mimeType, Map params) {
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FileInputStream fileInput = null;
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try {
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fileInput = new FileInputStream(file);
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return detect(fileInput);
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} catch (Exception e) {
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return null;
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} finally {
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if (fileInput != null) try { fileInput.close(); } catch (Exception e) { /* ignore this */ }
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}
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}
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public String[] process(byte[] data, int offset, int length, long bitmask, char comparator, String mimeType, Map params) {
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ByteArrayInputStream input = new ByteArrayInputStream(data);
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return detect(input);
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}
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private String[] detect(InputStream input) {
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try {
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// getting the format detector class
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Class formatDetector = Class.forName("de.nava.informa.utils.FormatDetector");
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// getting the proper method
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Method getFormat = formatDetector.getMethod("getFormat", new Class[]{InputStream.class});
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// invoke the method
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Object format = getFormat.invoke(null, new Object[] {input});
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if (format == null) return null;
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else if (format.toString().startsWith("RSS ")) return new String[]{"application/rss+xml"};
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else if (format.toString().startsWith("Atom ")) return new String[]{"application/atom+xml"};
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else return null;
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} catch (Exception e) {
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return null;
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} catch (Error e) {
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return null;
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}
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}
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}
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