Plex-FAWE/src/main/java/com/sk89q/jnbt/NBTUtils.java

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package com.sk89q.jnbt;
import java.util.Map;
import com.sk89q.jnbt.ByteArrayTag;
import com.sk89q.jnbt.ByteTag;
import com.sk89q.jnbt.CompoundTag;
import com.sk89q.jnbt.DoubleTag;
import com.sk89q.jnbt.EndTag;
import com.sk89q.jnbt.FloatTag;
import com.sk89q.jnbt.IntTag;
import com.sk89q.jnbt.ListTag;
import com.sk89q.jnbt.LongTag;
import com.sk89q.jnbt.NBTConstants;
import com.sk89q.jnbt.ShortTag;
import com.sk89q.jnbt.StringTag;
import com.sk89q.jnbt.Tag;
import com.sk89q.worldedit.data.InvalidFormatException;
/*
* JNBT License
*
* Copyright (c) 2010 Graham Edgecombe
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of the JNBT team nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/**
* A class which contains NBT-related utility methods.
*
* @author Graham Edgecombe
*
*/
public final class NBTUtils {
/**
* Gets the type name of a tag.
*
* @param clazz
* The tag class.
* @return The type name.
*/
public static String getTypeName(Class<? extends Tag> clazz) {
if (clazz.equals(ByteArrayTag.class)) {
return "TAG_Byte_Array";
} else if (clazz.equals(ByteTag.class)) {
return "TAG_Byte";
} else if (clazz.equals(CompoundTag.class)) {
return "TAG_Compound";
} else if (clazz.equals(DoubleTag.class)) {
return "TAG_Double";
} else if (clazz.equals(EndTag.class)) {
return "TAG_End";
} else if (clazz.equals(FloatTag.class)) {
return "TAG_Float";
} else if (clazz.equals(IntTag.class)) {
return "TAG_Int";
} else if (clazz.equals(ListTag.class)) {
return "TAG_List";
} else if (clazz.equals(LongTag.class)) {
return "TAG_Long";
} else if (clazz.equals(ShortTag.class)) {
return "TAG_Short";
} else if (clazz.equals(StringTag.class)) {
return "TAG_String";
} else if (clazz.equals(IntArrayTag.class)) {
return "TAG_Int_Array";
} else {
throw new IllegalArgumentException("Invalid tag classs ("
+ clazz.getName() + ").");
}
}
/**
* Gets the type code of a tag class.
*
* @param clazz
* The tag class.
* @return The type code.
* @throws IllegalArgumentException
* if the tag class is invalid.
*/
public static int getTypeCode(Class<? extends Tag> clazz) {
if (clazz.equals(ByteArrayTag.class)) {
return NBTConstants.TYPE_BYTE_ARRAY;
} else if (clazz.equals(ByteTag.class)) {
return NBTConstants.TYPE_BYTE;
} else if (clazz.equals(CompoundTag.class)) {
return NBTConstants.TYPE_COMPOUND;
} else if (clazz.equals(DoubleTag.class)) {
return NBTConstants.TYPE_DOUBLE;
} else if (clazz.equals(EndTag.class)) {
return NBTConstants.TYPE_END;
} else if (clazz.equals(FloatTag.class)) {
return NBTConstants.TYPE_FLOAT;
} else if (clazz.equals(IntTag.class)) {
return NBTConstants.TYPE_INT;
} else if (clazz.equals(ListTag.class)) {
return NBTConstants.TYPE_LIST;
} else if (clazz.equals(LongTag.class)) {
return NBTConstants.TYPE_LONG;
} else if (clazz.equals(ShortTag.class)) {
return NBTConstants.TYPE_SHORT;
} else if (clazz.equals(StringTag.class)) {
return NBTConstants.TYPE_STRING;
} else if (clazz.equals(IntArrayTag.class)) {
return NBTConstants.TYPE_INT_ARRAY;
} else {
throw new IllegalArgumentException("Invalid tag classs ("
+ clazz.getName() + ").");
}
}
/**
* Gets the class of a type of tag.
*
* @param type
* The type.
* @return The class.
* @throws IllegalArgumentException
* if the tag type is invalid.
*/
public static Class<? extends Tag> getTypeClass(int type) {
switch (type) {
case NBTConstants.TYPE_END:
return EndTag.class;
case NBTConstants.TYPE_BYTE:
return ByteTag.class;
case NBTConstants.TYPE_SHORT:
return ShortTag.class;
case NBTConstants.TYPE_INT:
return IntTag.class;
case NBTConstants.TYPE_LONG:
return LongTag.class;
case NBTConstants.TYPE_FLOAT:
return FloatTag.class;
case NBTConstants.TYPE_DOUBLE:
return DoubleTag.class;
case NBTConstants.TYPE_BYTE_ARRAY:
return ByteArrayTag.class;
case NBTConstants.TYPE_STRING:
return StringTag.class;
case NBTConstants.TYPE_LIST:
return ListTag.class;
case NBTConstants.TYPE_COMPOUND:
return CompoundTag.class;
case NBTConstants.TYPE_INT_ARRAY:
return IntArrayTag.class;
default:
throw new IllegalArgumentException("Invalid tag type : " + type
+ ".");
}
}
/**
* Default private constructor.
*/
private NBTUtils() {
}
/**
* Get child tag of a NBT structure.
*
* @param items
* @param key
* @param expected
* @return child tag
* @throws InvalidFormatException
*/
public static <T extends Tag> T getChildTag(Map<String,Tag> items, String key,
Class<T> expected) throws InvalidFormatException {
if (!items.containsKey(key)) {
throw new InvalidFormatException("Missing a \"" + key + "\" tag");
}
Tag tag = items.get(key);
if (!expected.isInstance(tag)) {
throw new InvalidFormatException(key + " tag is not of tag type " + expected.getName());
}
return expected.cast(tag);
}
}