using System;
using System.Text.RegularExpressions;
namespace SPSolutions
{
	public class ValidationUtil
	{
		public static string EmailExpression = "^([a-zA-Z0-9_\\-\\.\\+\\']+)@((\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.)|(([a-zA-Z0-9\\-]+\\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\\]?)$";
		public static string ImageFilenameExpression = "(.*?)\\.(jpg|jpeg|png|gif)$";
		public static bool IsEmail(string input)
		{
			if (string.IsNullOrEmpty(input))
			{
				return false;
			}
			Regex regex = new Regex(ValidationUtil.EmailExpression);
			return regex.IsMatch(input);
		}
		public static bool IsImageFilename(string input)
		{
			if (string.IsNullOrEmpty(input))
			{
				return false;
			}
			Regex regex = new Regex(ValidationUtil.ImageFilenameExpression, RegexOptions.IgnoreCase);
			return regex.IsMatch(input);
		}
	}
}