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Add the ability to load or save NBT compounds from files.

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This commit is contained in:
Kristian S. Stangeland 2014-04-01 23:20:24 +02:00
parent 4f871c64d7
commit 24de835440
1 changed files with 60 additions and 0 deletions
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60
ProtocolLib/src/main/java/com/comphenix/protocol/wrappers/nbt/NbtFactory.java
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@ -17,10 +17,17 @@
package com.comphenix.protocol.wrappers.nbt;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;
import javax.annotation.Nonnull;
@ -32,6 +39,9 @@ import com.comphenix.protocol.reflect.FuzzyReflection;
import com.comphenix.protocol.reflect.StructureModifier;
import com.comphenix.protocol.utility.MinecraftReflection;
import com.comphenix.protocol.wrappers.BukkitConverters;
import com.comphenix.protocol.wrappers.nbt.io.NbtBinarySerializer;
import com.google.common.base.Preconditions;
import com.google.common.io.Closeables;
/**
* Factory methods for creating NBT elements, lists and compounds.
@ -155,6 +165,56 @@ public class NbtFactory {
return fromBase(result);
}
/**
* Load a NBT compound from a GZIP compressed file.
* @param file - the source file.
* @return The compound.
* @throws IOException Unable to load file.
*/
public static NbtCompound fromFile(String file) throws IOException {
Preconditions.checkNotNull(file, "file cannot be NULL");
FileInputStream stream = null;
DataInputStream input = null;
boolean swallow = true;
try {
stream = new FileInputStream(file);
NbtCompound result = NbtBinarySerializer.DEFAULT.
deserializeCompound(input = new DataInputStream(new GZIPInputStream(stream)));
swallow = false;
return result;
} finally {
// Would be nice to avoid this, but alas - we have to use Java 6
if (input != null) Closeables.close(input, swallow);
else if (stream != null) Closeables.close(stream, swallow);
}
}
/**
* Save a NBT compound to a new compressed file, overwriting any existing files in the process.
* @param compound - the compound to save.
* @param file - the destination file.
* @throws IOException Unable to save compound.
*/
public static void toFile(NbtCompound compound, String file) throws IOException {
Preconditions.checkNotNull(compound, "compound cannot be NULL");
Preconditions.checkNotNull(file, "file cannot be NULL");
FileOutputStream stream = null;
DataOutputStream output = null;
boolean swallow = true;
try {
stream = new FileOutputStream(file);
NbtBinarySerializer.DEFAULT.
serialize(compound, output = new DataOutputStream(new GZIPOutputStream(stream)));
swallow = false;
} finally {
// Note the order
if (output != null) Closeables.close(output, swallow);
else if (stream != null) Closeables.close(stream, swallow);
}
}
/**
* Ensure that the given stack can store arbitrary NBT information.
* @param stack - the stack to check.