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Fork of Esoteric Software's Kryo built by Nathan Sweet that replaces Minlog with slf4j as the logging facade. This contains the shaded reflectasm jar to prevent conflicts with other versions of asm.
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/* Copyright (c) 2008, Nathan Sweet
 * 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 Esoteric Software 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. */

package com.esotericsoftware.kryo.util;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/** A few utility methods, mostly for private use.
 * @author Nathan Sweet  */
public class Util {
	private static final Logger LOGGER = LoggerFactory.getLogger(Util.class);
	
	static public boolean isAndroid;
	static {
		try {
			Class.forName("android.os.Process");
			isAndroid = true;
		} catch (Exception ignored) {
		}
	}

	/** Returns the primitive wrapper class for a primitive class.
	 * @param type Must be a primitive class. */
	static public Class getWrapperClass (Class type) {
		if (type == int.class)
			return Integer.class;
		else if (type == float.class)
			return Float.class;
		else if (type == boolean.class)
			return Boolean.class;
		else if (type == long.class)
			return Long.class;
		else if (type == byte.class)
			return Byte.class;
		else if (type == char.class)
			return Character.class;
		else if (type == short.class) //
			return Short.class;
		else if (type == double.class)
			return Double.class;
		return Void.class;
	}

	/** Returns the primitive class for a primitive wrapper class. Otherwise returns the type parameter.
	 * @param type Must be a wrapper class. */
	static public Class getPrimitiveClass (Class type) {
		if (type == Integer.class)
			return int.class;
		else if (type == Float.class)
			return float.class;
		else if (type == Boolean.class)
			return boolean.class;
		else if (type == Long.class)
			return long.class;
		else if (type == Byte.class)
			return byte.class;
		else if (type == Character.class)
			return char.class;
		else if (type == Short.class) //
			return short.class;
		else if (type == Double.class) //
			return double.class;
		else if (type == Void.class)
			return void.class;
		return type;
	}
	
	static public boolean isWrapperClass (Class type) {
		return type == Integer.class || type == Float.class || type == Boolean.class || type == Long.class || type == Byte.class
			|| type == Character.class || type == Short.class || type == Double.class;
	}

	/** Returns the object formatted as a string. The format depends on the object's type and whether {@link Object#toString()} has
	 * been overridden. */
	static public String string (Object object) {
		if (object == null) return "null";
		Class type = object.getClass();
		if (type.isArray()) return className(type);
		try {
			if (type.getMethod("toString", new Class[0]).getDeclaringClass() == Object.class)
				return LOGGER.isTraceEnabled() ? className(type) : type.getSimpleName();
		} catch (Exception ignored) {
		}
                try {
		    return String.valueOf(object);
                } catch(Throwable e) {
                    return (LOGGER.isTraceEnabled() ? className(type) : type.getSimpleName()) + "(Exception " + e + " in toString)";
                }
	}

	/** Returns the class formatted as a string. The format varies depending on the type. */
	static public String className (Class type) {
		if (type.isArray()) {
			Class elementClass = getElementClass(type);
			StringBuilder buffer = new StringBuilder(16);
			for (int i = 0, n = getDimensionCount(type); i < n; i++)
				buffer.append("[]");
			return className(elementClass) + buffer;
		}
		if (type.isPrimitive() || type == Object.class || type == Boolean.class || type == Byte.class || type == Character.class
			|| type == Short.class || type == Integer.class || type == Long.class || type == Float.class || type == Double.class
			|| type == String.class) {
			return type.getSimpleName();
		}
		return type.getName();
	}

	/** Returns the number of dimensions of an array. */
	static public int getDimensionCount (Class arrayClass) {
		int depth = 0;
		Class nextClass = arrayClass.getComponentType();
		while (nextClass != null) {
			depth++;
			nextClass = nextClass.getComponentType();
		}
		return depth;
	}

	/** Returns the base element type of an n-dimensional array class. */
	static public Class getElementClass (Class arrayClass) {
		Class elementClass = arrayClass;
		while (elementClass.getComponentType() != null)
			elementClass = elementClass.getComponentType();
		return elementClass;
	}
	
	/** Converts an "int" value between endian systems. */
	static public int swapInt(int i) {
		return   ((i & 0xFF) << 24) | 
			    ((i & 0xFF00) << 8) | 
			   ((i & 0xFF0000) >> 8)| 
			   ((i >> 24) & 0xFF);
	}

	/** Converts a "long" value between endian systems. */
	static public long swapLong(long value) {
        return
            ( ( ( value >> 0 ) & 0xff ) << 56 )|
            ( ( ( value >> 8 ) & 0xff ) << 48 )|
            ( ( ( value >> 16 ) & 0xff ) << 40 )|
            ( ( ( value >> 24 ) & 0xff ) << 32 )|
            ( ( ( value >> 32 ) & 0xff ) << 24 )|
            ( ( ( value >> 40 ) & 0xff ) << 16 )|
            ( ( ( value >> 48 ) & 0xff ) << 8 )|
            ( ( ( value >> 56 ) & 0xff ) << 0 );
    }
}