TypeConvert.cs

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namespace Convert
{
    using UnityEngine;
    using System.Collections;
    
    public class TypeConvert 
    {
    
        public TypeConvert()
        {
        }
            
        public  static byte[] getBytes(short s, bool asc)
        {
            byte[] buf = new byte[2];
            if (asc) 
            {
                for (int i = buf.Length - 1; i >= 0; i--) 
                {        
                    buf[i] = (byte) (s & 0x00ff);
                    s >>= 8;
                 }
            }
            else
            {  
                for (int i = 0; i < buf.Length; i++) 
                {
           
                    buf[i] = (byte) (s & 0x00ff);
                    s >>= 8;
                }
            }
            return buf;
        }
        public static byte[] getBytes(int s, bool asc) 
        {
            byte[] buf = new byte[4];
            if (asc)
              for (int i = buf.Length - 1; i >= 0; i--) 
                {
                buf[i] = (byte) (s & 0x000000ff);
                s >>= 8;
              }
            else
              for (int i = 0; i < buf.Length; i++) 
            {
                buf[i] = (byte) (s & 0x000000ff);
                s >>= 8;
              }
            return buf;
         }
        
        public static byte[] getBytes(long s, bool asc) 
        {
            byte[] buf = new byte[8];
            if (asc)
            for (int i = buf.Length - 1; i >= 0; i--) 
            {
                buf[i] = (byte) (s & 0x00000000000000ff);
                s >>= 8;
            }
            else
            for (int i = 0; i < buf.Length; i++) 
            {
                buf[i] = (byte) (s & 0x00000000000000ff);
                s >>= 8;
            }
            return buf;
         }
          public  static short getShort(byte[] buf, bool asc) {
            if (buf == null) {
              //throw new IllegalArgumentException("byte array is null!");
            }
            if (buf.Length > 2) {
              //throw new IllegalArgumentException("byte array size > 2 !");
            }
            short r = 0;
            if (asc)
              for (int i = buf.Length - 1; i >= 0; i--) {
                r <<= 8;
                r |= (short)(buf[i] & 0x00ff);
              }
            else
              for (int i = 0; i < buf.Length; i++) {
                r <<= 8;
                r |= (short)(buf[i] & 0x00ff);
              }
            return r;
          }
          public  static int getInt(byte[] buf, bool asc) {
            if (buf == null) {
             // throw new IllegalArgumentException("byte array is null!");
            }
            if (buf.Length > 4) {
              //throw new IllegalArgumentException("byte array size > 4 !");
            }
            int r = 0;
            if (asc)
              for (int i = buf.Length - 1; i >= 0; i--) {
                r <<= 8;
                r |= (buf[i] & 0x000000ff);
              }
            else
              for (int i = 0; i < buf.Length; i++) {
                r <<= 8;
                r |= (buf[i] & 0x000000ff);
              }
            return r;
          }
          public static long getLong(byte[] buf, bool asc) {
            if (buf == null) {
              //throw new IllegalArgumentException("byte array is null!");
            }
            if (buf.Length > 8) {
              //throw new IllegalArgumentException("byte array size > 8 !");
            }
            long r = 0;
            if (asc)
              for (int i = buf.Length - 1; i >= 0; i--) {
                r <<= 8;
                r |= (buf[i] & (uint)0x00000000000000ff);
              }
            else
              for (int i = 0; i < buf.Length; i++) {
                r <<= 8;
                r |= (buf[i] & (uint)0x00000000000000ff);
              }
            return r;
          }
    }
}