plantuml/src/net/sourceforge/plantuml/code/CompressionZopfliZlib.java

65 lines
2.0 KiB
Java

/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2023, Arnaud Roques
*
* Project Info: http://plantuml.com
*
* If you like this project or if you find it useful, you can support us at:
*
* http://plantuml.com/patreon (only 1$ per month!)
* http://plantuml.com/paypal
*
* This file is part of PlantUML.
*
* PlantUML 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 3 of the License, or
* (at your option) any later version.
*
* PlantUML 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
*
* Original Author: Arnaud Roques
*
*
*/
package net.sourceforge.plantuml.code;
import net.sourceforge.plantuml.zopfli.Options;
import net.sourceforge.plantuml.zopfli.Options.BlockSplitting;
import net.sourceforge.plantuml.zopfli.Options.OutputFormat;
import net.sourceforge.plantuml.zopfli.Zopfli;
public class CompressionZopfliZlib implements Compression {
// ::remove file when WASM
public byte[] compress(byte[] in) {
if (in.length == 0)
return null;
int len = in.length * 2;
if (len < 100)
len = 100;
final Zopfli compressor = new Zopfli(len);
final Options options = new Options(OutputFormat.DEFLATE, BlockSplitting.FIRST, 30);
return compressor.compress(options, in).getResult();
}
public ByteArray decompress(byte[] in) throws NoPlantumlCompressionException {
return new CompressionZlib().decompress(in);
}
}