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using System;
using System.Security.Cryptography;
using System.Text;
using System.Text.RegularExpressions;
namespace MediaBrowser.Common.Extensions
{
/// <summary>
/// Class BaseExtensions
/// </summary>
public static class BaseExtensions
{
/// <summary>
/// Strips the HTML.
/// </summary>
/// <param name="htmlString">The HTML string.</param>
/// <returns>System.String.</returns>
public static string StripHtml(this string htmlString)
{
// http://stackoverflow.com/questions/1349023/how-can-i-strip-html-from-text-in-net
const string pattern = @"<(.|\n)*?>";
return Regex.Replace(htmlString, pattern, string.Empty).Trim();
}
/// <summary>
/// Gets the M d5.
/// </summary>
/// <param name="str">The STR.</param>
/// <returns>Guid.</returns>
public static Guid GetMD5(this string str)
{
using (var provider = MD5.Create())
{
return new Guid(provider.ComputeHash(Encoding.Unicode.GetBytes(str)));
}
}
/// <summary>
/// Gets the MB id.
/// </summary>
/// <param name="str">The STR.</param>
/// <param name="aType">A type.</param>
/// <returns>Guid.</returns>
/// <exception cref="System.ArgumentNullException">aType</exception>
public static Guid GetMBId(this string str, Type aType)
{
if (aType == null)
{
throw new ArgumentNullException("aType");
}
return (aType.FullName + str.ToLower()).GetMD5();
}
/// <summary>
/// Gets the attribute value.
/// </summary>
/// <param name="str">The STR.</param>
/// <param name="attrib">The attrib.</param>
/// <returns>System.String.</returns>
/// <exception cref="System.ArgumentNullException">attrib</exception>
public static string GetAttributeValue(this string str, string attrib)
{
if (attrib == null)
{
throw new ArgumentNullException("attrib");
}
string srch = "[" + attrib + "=";
int start = str.IndexOf(srch, StringComparison.OrdinalIgnoreCase);
if (start > -1)
{
start += srch.Length;
int end = str.IndexOf(']', start);
return str.Substring(start, end - start);
}
return null;
}
}
}
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