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/* SVGURLConnection.java
* =========================================================================
* This file is part of the GrInvIn project - http://www.grinvin.org
*
* Copyright (C) 2005-2008 Universiteit Gent
*
* 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.
*
* A copy of the GNU General Public License can be found in the file
* LICENSE.txt provided with the source distribution of this program (see
* the META-INF directory in the source jar). This license can also be
* found on the GNU website at http://www.gnu.org/licenses/gpl.html.
*
* If you did not receive a copy of the GNU General Public License along
* with this program, contact the lead developer, or write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
package org.grinvin.io;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLDecoder;
import org.grinvin.gui.icons.SvgIconManager;
class SVGURLConnection extends URLConnection {
private String svg;
private int width;
private int height;
SVGURLConnection(URL url) throws IOException {
super(url);
svg = url.getPath();
parseQuery(url.getQuery());
}
synchronized public void connect() throws IOException {
//do nothing
}
synchronized public InputStream getInputStream() throws IOException {
return SvgIconManager.getInstance().getImageAsStream(svg,width,height);
}
public String getContentType() {
return "image/png";
}
private void parseQuery(String query){
if(query==null)
return;
String[] parameters = query.split("&");
for(String parameter : parameters)
parseParameter(parameter);
}
//simply return when an error occurs
//this class should not create exception because of wrong parameters
private void parseParameter(String parameter){
if(parameter.length()==0)
return;
int pos = parameter.indexOf('=');
if (pos < 0 || parameter.indexOf(pos+1, '=') >= 0)
return;
try {
String parameterName = URLDecoder.decode(parameter.substring(0, pos), "UTF-8");
int parameterValue = Integer.parseInt(URLDecoder.decode(parameter.substring(pos+1), "UTF-8"));
if(parameterName.equalsIgnoreCase("width"))
width = parameterValue;
else if(parameterName.equalsIgnoreCase("height"))
height = parameterValue;
else if(parameterName.equalsIgnoreCase("size")) {
width = parameterValue;
height = parameterValue;
}
} catch (UnsupportedEncodingException ex) {
//do nothing
} catch (NumberFormatException ex) {
//do nothing
}
}
}
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