yacy_search_server/htroot/Thumbnail.java
allo df4fe259c9 support for external Thumbnailers.
TODO: Mimetype fix
TODO: Demo Thumbnailer


git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3245 6c8d7289-2bf4-0310-a012-ef5d649a1542
2007-01-18 14:43:35 +00:00

70 lines
2.8 KiB
Java

//Thumbnail.java
//------------
// part of YACY
//
// (C) 2007 Alexander Schier
//
// last change: $LastChangedDate: $ by $LastChangedBy: $
// $LastChangedRevision: $
//
// 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
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import de.anomic.http.httpHeader;
import de.anomic.plasma.plasmaSwitchboard;
import de.anomic.plasma.plasmaURL;
import de.anomic.server.serverObjects;
import de.anomic.server.serverSwitch;
import de.anomic.server.servletProperties;
public class Thumbnail{
public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch env) {
servletProperties prop = new servletProperties();
String command=env.getConfig("thumbnailProgram", "");
if(command.equals("")||post==null||!post.containsKey("url")){
prop.put("image", "thumbnail cannot be generated"); //TODO: put a "thumbnail not possible" image.
return prop;
}
String[] cmdline=new String[3];
cmdline[0]=env.getConfig("thumbnailProgram", "");
cmdline[1]=post.get("url", "");
plasmaSwitchboard sb=plasmaSwitchboard.getSwitchboard();
File path=new File(sb.workPath, plasmaURL.urlHash(cmdline[1])+".png");
cmdline[2]=path.getAbsolutePath();//does not contain an extension!
try {
Runtime.getRuntime().exec(cmdline);
BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(path)));
String line;
StringBuffer image=new StringBuffer();
while((line=br.readLine())!=null){
image.append(line);
}
//path.delete(); //we do not cache, yet.
prop.put("image", image.toString());
} catch (IOException e) {
prop.put("image", "error creating thumbnail");//TODO: put a "thumbnail error" image.
}
httpHeader out_header=new httpHeader();
out_header.put(httpHeader.CONTENT_TYPE, "image/png");
prop.setOutgoingHeader(out_header);
return prop;
}
}