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110 lines
4.5 KiB
110 lines
4.5 KiB
// Classification.java
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// (C) 2009 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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// first published 09.07.2009 on http://yacy.net
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//
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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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//
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// LICENSE
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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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package net.yacy.document;
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import java.io.BufferedInputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.util.HashSet;
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import java.util.Properties;
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import java.util.Set;
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import net.yacy.kelondro.logging.Log;
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public class Classification {
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private static final HashSet<String> mediaExtSet = new HashSet<String>();
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private static final HashSet<String> imageExtSet = new HashSet<String>();
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private static final HashSet<String> audioExtSet = new HashSet<String>();
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private static final HashSet<String> videoExtSet = new HashSet<String>();
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private static final HashSet<String> appsExtSet = new HashSet<String>();
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private static final Properties ext2mime = new Properties();
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static {
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// load a list of extensions from file
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BufferedInputStream bufferedIn = null;
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File mimeFile = new File("defaults/httpd.mime");
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if (!mimeFile.exists()) mimeFile = new File("config/mime.properties");
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try {
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ext2mime.load(bufferedIn = new BufferedInputStream(new FileInputStream(mimeFile)));
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} catch (final IOException e) {
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Log.logSevere("Classification", "httpd.mime not found in " + mimeFile.toString(), e);
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} finally {
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if (bufferedIn != null) try {
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bufferedIn.close();
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} catch (final Exception e) {}
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}
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final String apps = "7z,ace,arc,arj,apk,asf,asx,bat,bin,bkf,bz2,cab,com,css,dcm,deb,dll,dmg,exe,gho,ghs,gz,hqx,img,iso,jar,lha,rar,sh,sit,sitx,tar,tbz,tgz,tib,torrent,vbs,war,zip";
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final String audio = "aac,aif,aiff,flac,m4a,m4p,mid,mp2,mp3,oga,ogg,ram,wav,wma";
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final String video = "3g2,3gp,3gp2,3gpp,3gpp2,3ivx,asf,asx,avi,div,divx,dv,dvx,env,f4v,flv,hdmov,m1v,m4v,m-jpeg,moov,mov,movie,mp2v,mp4,mpe,mpeg,mpg,mpg4,mv4,ogm,ogv,qt,rm,rv,vid,swf,wmv";
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final String image = "ai,bmp,cdr,cmx,emf,eps,gif,img,jpeg,jpg,mng,pct,pdd,pdn,pict,png,psb,psd,psp,tif,tiff,wmf";
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addSet(imageExtSet, image); // image formats
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addSet(audioExtSet, audio); // audio formats
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addSet(videoExtSet, video); // video formats
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addSet(appsExtSet, apps); // application formats
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addSet(mediaExtSet, apps + "," + audio + "," + video + "," + image); // all media formats
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}
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private static void addSet(Set<String> set, final String extString) {
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if ((extString == null) || (extString.length() == 0)) return;
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for (String s: extString.split(",")) set.add(s.toLowerCase().trim());
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}
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public static boolean isMediaExtension(String mediaExt) {
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if (mediaExt == null) return false;
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return mediaExtSet.contains(mediaExt.trim().toLowerCase());
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}
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public static boolean isImageExtension(final String imageExt) {
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if (imageExt == null) return false;
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return imageExtSet.contains(imageExt.trim().toLowerCase());
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}
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public static boolean isAudioExtension(final String audioExt) {
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if (audioExt == null) return false;
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return audioExtSet.contains(audioExt.trim().toLowerCase());
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}
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public static boolean isVideoExtension(final String videoExt) {
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if (videoExt == null) return false;
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return videoExtSet.contains(videoExt.trim().toLowerCase());
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}
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public static boolean isApplicationExtension(final String appsExt) {
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if (appsExt == null) return false;
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return appsExtSet.contains(appsExt.trim().toLowerCase());
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}
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public static boolean isPictureMime(final String mimeType) {
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if (mimeType == null) return false;
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return mimeType.toUpperCase().startsWith("IMAGE");
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}
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}
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