/* Copyright (c) 2010-2013 Jesper Öqvist <jesper@llbit.se>
* 2013 TOGoS
*
* This file is part of Chunky.
*
* Chunky 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.
*
* Chunky 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 Chunky. If not, see <http://www.gnu.org/licenses/>.
*/
package se.llbit.nbt.test;
import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintStream;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.zip.GZIPInputStream;
import se.llbit.chunky.world.ChunkData;
import se.llbit.chunky.world.ChunkPosition;
import se.llbit.chunky.world.Region;
import se.llbit.nbt.AnyTag;
import se.llbit.nbt.ErrorTag;
import se.llbit.nbt.NamedTag;
@SuppressWarnings("javadoc")
public class NBTDump {
static final Pattern REGION_PATTERN = Pattern.compile("^region-chunk:(\\d+),(\\d+):(.*)$");
protected static boolean isGzipped(InputStream is) throws IOException {
is.mark(2);
boolean isGZ = is.read() == 0x1F && is.read() == 0x8B;
is.reset();
return isGZ;
}
protected static AnyTag read(String arg) throws IOException {
Matcher m = REGION_PATTERN.matcher(arg);
DataInputStream in = null;
String filename;
try {
if (m.matches()) {
filename = m.group(3);
int x = Integer.parseInt(m.group(1));
int z = Integer.parseInt(m.group(2));
ChunkData data = Region.getChunkData(new File(filename),
ChunkPosition.get(x, z));
if (data == null) {
System.err.println("No such chunk in region: (" + x + "," + z + ")");
return new ErrorTag();
}
in = data.inputStream;
} else {
filename = arg;
InputStream is = new BufferedInputStream(
new FileInputStream(new File(filename)));
if (isGzipped(is)) {
is = new GZIPInputStream(is);
}
in = new DataInputStream(is);
}
if (in != null) {
return NamedTag.read(in);
} else {
System.err.println("Failed to open file: " + filename);
return new ErrorTag();
}
} finally {
if (in != null) in.close();
}
}
protected static final String USAGE =
"Usage: NBTDump <file>\n"+
"\n"+
"<file> may be an NBT-formatted file (gzipped or uncompressed),\n"+
"or of the form 'region-chunk:<x>,<y>:<region-file>',\n" +
"which will dump the specified chunk in the given region file.";
public static void main(String[] args) throws Exception {
if (args.length != 1) {
System.err.println(USAGE);
System.exit(1);
}
if ("-?".equals(args[0]) || "-h".equals(args[0])) {
System.out.println(USAGE);
System.exit(0);
}
String fn = args[0];
//String outFn = fn+".out";
//System.out.println("parsing "+fn);
//System.out.println("writing output to "+outFn);
//PrintStream out = new PrintStream(new File(outFn));
AnyTag tag = read(fn);
PrintStream out = System.out;
out.print(tag.dumpTree());
out.close();
System.out.println("done");
}
}