/*
* Copyright (C) 2007-2011 Geometer Plus <contact@geometerplus.com>
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
package org.geometerplus.fbreader.formats.plucker;
import java.io.IOException;
import java.io.InputStream;
import org.geometerplus.fbreader.formats.pdb.DocDecompressor;
import org.geometerplus.zlibrary.core.image.ZLSingleImage;
import org.geometerplus.zlibrary.core.filesystem.ZLFile;
public class DocCompressedFileImage extends ZLSingleImage {
private final ZLFile myFile;
private final int myOffset;
private final int myCompressedSize;
public DocCompressedFileImage(String mimeType, final ZLFile file, final int offset, final int compressedSize) {
super(mimeType);
myFile = file;
myOffset = offset;
myCompressedSize = compressedSize;
}
public String getURI() {
// TODO: implement
return null;
}
public byte[] byteData() {
try {
final InputStream stream = myFile.getInputStream();
if (stream == null) {
return new byte[0];
}
stream.skip(myOffset);
byte [] targetBuffer = new byte[65535];
final int size = DocDecompressor.decompress(stream, targetBuffer, myCompressedSize);
if (size > 0 && size != 65535) {
byte [] buffer = new byte[size];
System.arraycopy(targetBuffer, 0, buffer, 0, size);
return buffer;
}
return targetBuffer;
} catch (IOException e) {}
return new byte[0];
}
}