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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Security.Cryptography;
namespace MediaBrowser.Common.Extensions
{
public static class BaseExtensions
{
static MD5CryptoServiceProvider md5Provider = new MD5CryptoServiceProvider();
public static Guid GetMD5(this string str)
{
lock (md5Provider)
{
return new Guid(md5Provider.ComputeHash(Encoding.Unicode.GetBytes(str)));
}
}
/// <summary>
/// Examine a list of strings assumed to be file paths to see if it contains a parent of
/// the provided path.
/// </summary>
/// <param name="lst"></param>
/// <param name="path"></param>
/// <returns></returns>
public static bool ContainsParentFolder(this List<string> lst, string path)
{
path = path.TrimEnd('\\');
foreach (var str in lst)
{
//this should be a little quicker than examining each actual parent folder...
var compare = str.TrimEnd('\\');
if (path.Equals(compare,StringComparison.OrdinalIgnoreCase)
|| (path.StartsWith(compare, StringComparison.OrdinalIgnoreCase) && path[compare.Length] == '\\')) return true;
}
return false;
}
/// <summary>
/// Helper method for Dictionaries since they throw on not-found keys
/// </summary>
/// <typeparam name="T"></typeparam>
/// <typeparam name="U"></typeparam>
/// <param name="dictionary"></param>
/// <param name="key"></param>
/// <param name="defaultValue"></param>
/// <returns></returns>
public static U GetValueOrDefault<T, U>(this Dictionary<T, U> dictionary, T key, U defaultValue)
{
U val;
if (!dictionary.TryGetValue(key, out val))
{
val = defaultValue;
}
return val;
}
}
}
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