/// <summary>
/// author:Stone_W
/// date:2010.12.23
/// desc:宽字符编码和解码
/// </summary>
public class CodeWidthChartUtility
{
public CodeWidthChartUtility() { }

// 无需转码的字符
private static string NonEncodingChats = "abcdefghijklmnopqrstuvwxyz0123456789`!@#$%^&*()_+|-=\\,./;'[]{}:<>?";

#region 判断需要转换的字符
/// <summary>
/// 判断需要转换的字符
/// </summary>
/// <param name="charValue">判断字符</param>
/// <returns>bool</returns>
private static bool IsToWindthChart(char charValue)
{
NonEncodingChats = NonEncodingChats.ToUpper() + NonEncodingChats.ToLower();
return NonEncodingChats.IndexOf(charValue) == -1;
}
#endregion

#region 宽字符编码
/// <summary>
/// 宽字符编码
/// 1.编码后 有js控制 浏览器会自动解析[js无需解码]
/// 2.后台控制xxx.InnerHtml=宽字符 会原样输出宽字符串[后台控制需要手动解析]
/// </summary>
/// <param name="StrValue">需要编码的字符串</param>
/// <returns>编码后的宽字符串</returns>
public static string WidthChartEncoding(string StrValue)
{
StringBuilder sb = new StringBuilder();
foreach (char item in StrValue)
{
if (IsToWindthChart(item)) // 判断需要转换的字符
{
sb.Append(String.Format("\\u{0:x4}", (int)item));
}
else
{
sb.Append(item);
}
}
return sb.ToString();
}
#endregion

#region 宽字符解码
/// <summary>
/// 宽字符解码
/// 1.后台才需要手动解码
/// 2.js 控制的浏览器会自动解码宽字符
/// </summary>
/// <param name="WidthStr">宽字符串</param>
/// <returns>一般能看懂的字符</returns>
public static string WidthChartDecoding(string WidthStr)
{
StringBuilder sb = new StringBuilder();
string[] _ValueList = WidthStr.Split(new char[] { '\\', 'u' }, StringSplitOptions.RemoveEmptyEntries);
for (int i = 0; i != _ValueList.Length; i++)
{
char _ValueChar = Convert.ToChar(Convert.ToUInt16(_ValueList[i], 16));
sb.Append(_ValueChar.ToString());
}
return sb.ToString();
}
#endregion

}