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/*
 * Copyright (c) 2018-2019.‭‭‭‭‭‭‭‭‭‭‭‭[zuoqinggang] www.pingfangushi.com
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */


package cn.smallbun.scaffold.framework.common.toolkit;

import java.text.DecimalFormat;

/**
 * 转换工具类，各个类型之间的转换
 * @author SanLi
 * Created  by [email protected]  on 2018/1/26
 */
public class ParseUtil {
	/**
	 * 将object转换为string类型 

	 *
	 * @param obj
	 *            未被转换的值
	 * @return String 转换后的值
	 */
	public static String toString(Object obj) {
		return obj.toString().trim();
	}

	/**
	 * 将string类型转换为double类型
	 *
	 * @param obj 未被转换的值
	 * @throws NumberFormatException
	 * @return Double 转换后的值
	 */
	public static Double toDouble(String obj) throws NumberFormatException {
		return Double.valueOf(obj);
	}

	/**
	 * 将object类型的值转换为double 

	 *
	 * @param obj
	 *            未被转换的值
	 * @throws NumberFormatException
	 * @return Double 转换后的值
	 */
	public static Double toDouble(Object obj) throws NumberFormatException {
		return Double.valueOf(toString(obj));
	}

	/**
	 * 将double类型格式化成0.000保留三位小数点
	 *
	 * @param val 未被格式化的值
	 * @return Double 格式化后的值
	 */
	public static Double toDouble(Double val) {
		if (val != null) {
			DecimalFormat format = new DecimalFormat("#0.000");
			return Double.parseDouble(format.format(val));
		}
		return 0.0D;
	}

	/**
	 * 将double类型格式化，根据传入pattern进行格式化
	 * @param val val
	 * @param pattern val
	 * @return String
	 */
	public static String toDouble(Double val, String pattern) {
		if (val != null) {
			DecimalFormat format = new DecimalFormat(pattern);
			return format.format(val);
		}
		return "0";
	}

	/**
	 * 将object类型的值转换为float 

	 * 2016年12月23日 上午10:22:02 toFloat
	 *
	 * @param obj
	 *            未被转换的值
	 * @return Float 转换后的值
	 */
	public static Float toFloat(Object obj) {
		return Float.valueOf(Float.parseFloat(toString(obj)));
	}

	/**
	 * 将object类型的值转换为integer 

	 * 2016年12月23日 上午10:22:41 toInteger
	 *
	 * @param obj 未被转换的值
	 * @throws NumberFormatException
	 * @return Integer 转换后的值
	 */
	public static Integer toInteger(Object obj) throws NumberFormatException {
		return Integer.valueOf(toString(obj));
	}

	/**
	 * 将数组转换为字符串,格式化后字符串：str1,str2,str3

	 * 2016年12月23日 上午10:23:14 array2String
	 *
	 * @param objs objs
	 * @return String
	 */
	public static String arrayToString(Object[] objs) {
		String str = "";
		for (int i = 0; i < objs.length; i++) {
			str = str + objs[i] + (i == objs.length - 1 ? "" : ",");
		}
		return str;
	}

	/**
	 * 将string字符串转换根据pattern分割成数组 

	 * 2016年12月23日 上午10:24:57 toArray
	 *
	 * @param obj 未被分割的数组
	 * @param pattern 分割的标识
	 * @return String[] 格式化后的数组
	 */
	public static String[] stringToArray(String obj, String pattern) {
		return obj.toString().split(pattern);
	}
}