using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;

namespace iWare.Wms.Core.Util
{
    public static class StringUtil
    {
        /// <summary>
        /// 获取下划线表达式
        /// </summary>
        /// <param name="typeName"></param>
        /// <returns></returns>
        public static string ToUnderLine(string camel)
        {
            return Regex.Replace(camel, "([A-Z])", "_$1").ToLower().TrimStart('_');
        }


        public static string ParseTrueType(string dataType)
        {
            if (!dataType.StartsWith("System.Nullable")) return dataType;

            return new Regex(@"(?i)(?<=\[)(.*)(?=\])").Match(dataType).Value;


        }

        public static string ParseTrueType2(string dataType)
        {
            if (!dataType.StartsWith("System.Nullable")) return dataType;

            var str = new Regex(@"(?i)(?<=\[\[)(.*)(?=\]\])").Match(dataType).Value;

            var args = str.Split(',');

            return args.Length > 0 ? args[0] : "";
        }

    }
}