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plantuml/src/net/sourceforge/plantuml/code/TranscoderImpl.java
2017-12-11 22:02:10 +01:00

82 lines
2.6 KiB
Java

/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2017, 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 java.io.IOException;
public class TranscoderImpl implements Transcoder {
private final Compression compression;
private final URLEncoder urlEncoder;
private final StringCompressor stringCompressor;
public TranscoderImpl() {
this(new AsciiEncoder(), new StringCompressorNone(), new CompressionHuffman());
}
public TranscoderImpl(Compression compression) {
this(new AsciiEncoder(), new StringCompressorNone(), compression);
}
public TranscoderImpl(URLEncoder urlEncoder, Compression compression) {
this(urlEncoder, new ArobaseStringCompressor(), compression);
}
public TranscoderImpl(URLEncoder urlEncoder, StringCompressor stringCompressor, Compression compression) {
this.compression = compression;
this.urlEncoder = urlEncoder;
this.stringCompressor = stringCompressor;
}
public String encode(String text) throws IOException {
final String stringAnnoted = stringCompressor.compress(text);
final byte[] data = stringAnnoted.getBytes("UTF-8");
final byte[] compressedData = compression.compress(data);
return urlEncoder.encode(compressedData);
}
public String decode(String code) throws IOException {
final byte compressedData[] = urlEncoder.decode(code);
final byte data[] = compression.decompress(compressedData);
return stringCompressor.decompress(new String(data, "UTF-8"));
}
}