package com.vci.client.logon.base;

import com.vci.client.framework.systemConfig.object.PasswordStrategyObject;

/**
 * <p>Title: 获取密码级别</p>
 * <p>Description: 通过checkStrong方法获取输入密码的基本，现阶段系统提供5个级别：
 * 0代表密码长度太短不符合要求，1和2代表初级、3代表中级、4代表高级</p>
 * <p>Copyright: Copyright (c) 2011</p>
 * <p>Company: VCI</p>
 * @author Administrator
 * @time 2011-8-18
 * @version 1.0
 */
public class PasswordLevel {

	/**
	 * 获取字符串每个字符的类型
	 * <p>Description: </p>
	 * 
	 * @author Administrator
	 * @time 2011-8-18
	 * @param sChar
	 * @return
	 */
	public static int charMode(char sChar) {
		if (sChar >= 48 && sChar <= 57) {//数字 
			return 1; 
		} else  if (sChar >= 65 && sChar <= 90) {//大写字母 
			return 2; 
		} else if (sChar >= 97 && sChar <= 122) {//小写 
			return 4; 
		} else  {
			return 8; //特殊字符
		}
	}
	
	/**
	 * 计算出当前密码当中一共有多少种模式
	 * 
	 * <p>Description: </p>
	 * 
	 * @author Administrator
	 * @time 2011-8-18
	 * @param num
	 * @return
	 */
	public static int bitTotal(int num) {
		int modes = 0; 
		for (int i = 0; i < 4; i++){ 
			int mid = num & 1;
			if (mid > 0) {
				modes++; 
			}
			num >>>= 1; 
		} 
		return modes;
	}
	
	public static int checkStrong(String sPW ,Object object){ 
		if (sPW.length() < ((PasswordStrategyObject)object).getPasswordLen())  {
			return 0; 
		}
		int Modes = 0; 
		for (int i = 0; i < sPW.length(); i++){ 
		    Modes |= charMode(sPW.charAt(i)); 
		} 
		return bitTotal(Modes); 
	}
}