62 lines
2.0 KiB
C#
62 lines
2.0 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Security.Cryptography;
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namespace MediaBrowser.Common.Extensions
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{
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public static class BaseExtensions
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{
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static MD5CryptoServiceProvider md5Provider = new MD5CryptoServiceProvider();
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public static Guid GetMD5(this string str)
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{
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lock (md5Provider)
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{
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return new Guid(md5Provider.ComputeHash(Encoding.Unicode.GetBytes(str)));
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}
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}
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/// <summary>
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/// Examine a list of strings assumed to be file paths to see if it contains a parent of
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/// the provided path.
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/// </summary>
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/// <param name="lst"></param>
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/// <param name="path"></param>
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/// <returns></returns>
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public static bool ContainsParentFolder(this List<string> lst, string path)
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{
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foreach (var str in lst)
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{
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//this should be a little quicker than examining each actual parent folder...
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if (path.Equals(str,StringComparison.OrdinalIgnoreCase)
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|| (path.StartsWith(str, StringComparison.OrdinalIgnoreCase) && path[str.Length-1] == '\\')) return true;
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}
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return false;
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}
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/// <summary>
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/// Helper method for Dictionaries since they throw on not-found keys
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <typeparam name="U"></typeparam>
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/// <param name="dictionary"></param>
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/// <param name="key"></param>
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/// <param name="defaultValue"></param>
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/// <returns></returns>
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public static U GetValueOrDefault<T, U>(this Dictionary<T, U> dictionary, T key, U defaultValue)
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{
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U val;
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if (!dictionary.TryGetValue(key, out val))
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{
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val = defaultValue;
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}
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return val;
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}
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}
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}
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