package Sense4;

/**
 * @author Lanlan
 * @date 2018/11/25
 */
public abstract class LockUtils {

	private static EliteLockIO intance;
	
	public static boolean isJVMSystem32() {
		String arch_model = System.getProperty("sun.arch.data.model");
		
		return "32".equals(arch_model);
	}
	
	// big-endian
	public static byte[] intToByteArray1(int i) {   
		  byte[] result = new byte[4];   
		  result[0] = (byte)((i >> 24) & 0xFF);
		  result[1] = (byte)((i >> 16) & 0xFF);
		  result[2] = (byte)((i >> 8) & 0xFF); 
		  result[3] = (byte)(i & 0xFF);
		  return result;
	}
	
	// big-endian
	public static int byteArray2Int(byte[] bytes) {
		int res = 0;
		res += (bytes[0] & 0xff) << 24;
		res += (bytes[1] & 0xff) << 16;
		res += (bytes[2] & 0xff)<< 8;
		res += bytes[3] & 0xff;
		return res;
	}
	
	public static String toHexString(byte[] b) {
		StringBuilder sb = new StringBuilder();
		for (int i = 0; i < b.length; i++) {
			String hex = Integer.toHexString(b[i] & 0xFF);
			if (hex.length() == 1) {
				hex = "0" + hex;
			}
			sb.append(hex);
		}
		
		return sb.toString();
	}
	
	public static void main(String[] args) {
		System.out.println("System is 32-bit: " + isJVMSystem32());
	}
	
	public static EliteLockIO getEliteLockIOInstance() {
		if (intance == null) {
			if (isJVMSystem32()) {
				intance = new EliteLockIO32();
			} else {
				intance = new EliteLockIO64();
			}
		}
		
		return intance;
	}
}