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using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.VisualBasic;

/// <summary>
/// BCCase 的摘要说明 全/半角转换
/// </summary>
namespace Dal.Common
{
    public class BCCase
    {
        /// <summary>
        /// 转全角的函数(SBC case)
        /// </summary>
        /// <param name="input">任意字符串</param>
        /// <returns>全角字符串</returns>
        ///<remarks>
        ///全角空格为12288，半角空格为32
        ///其他字符半角(33-126)与全角(65281-65374)的对应关系是：均相差65248
        ///</remarks>       
        public string ToSBC(string input)
        {

            char[] c = input.ToCharArray();

            for (int i = 0; i < c.Length; i++)
            {
                if (c[i] == 32)
                {
                    c[i] = (char)12288;
                    continue;
                }
                if (c[i] < 127)
                    c[i] = (char)(c[i] + 65248);
            }
            return new string(c);
        }

        /// <summary>
        /// 转半角的函数(DBC case)
        /// </summary>
        /// <param name="input">任意字符串</param>
        /// <returns>半角字符串</returns>
        ///<remarks>
        ///全角空格为12288，半角空格为32
        ///其他字符半角(33-126)与全角(65281-65374)的对应关系是：均相差65248
        ///</remarks>
        public string ToDBC(string input)
        {
            char[] c = input.ToCharArray();
            for (int i = 0; i < c.Length; i++)
            {
                if (c[i] == 12288)
                {
                    c[i] = (char)32;
                    continue;
                }
                if (c[i] > 65280 && c[i] < 65375)
                    c[i] = (char)(c[i] - 65248);
            }
            return new string(c);
        }

        /// <summary>
        /// 转简体
        /// </summary>
        /// <param name="s">需换的字符串</param>
        /// <returns>简体字符串</returns>
        public string VBStrConvertionSimplified(string s)
        {
            return Strings.StrConv(s, VbStrConv.SimplifiedChinese, 0);
        }

        /// <summary>
        /// 转繁体
        /// </summary>
        /// <param name="s">需换的字符串</param>
        /// <returns>繁体字符串</returns>
        public string VBStrConvertionTraditional(string s)
        {
            return Strings.StrConv(s, VbStrConv.TraditionalChinese, 0);
        }
    }
}