101 lines
2.7 KiB
C#
101 lines
2.7 KiB
C#
//
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// CollectionExtensions.cs
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//
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// Authors:
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// Marek Safar <marek.safar@gmail.com>
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//
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// Copyright (C) 2011 Xamarin Inc (http://www.xamarin.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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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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namespace System.Net.Http.Headers
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{
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static class CollectionExtensions
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{
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public static bool SequenceEqual<TSource> (this List<TSource> first, List<TSource> second)
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{
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if (first == null)
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return second == null || second.Count == 0;
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if (second == null)
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return first == null || first.Count == 0;
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return Enumerable.SequenceEqual (first, second);
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}
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public static void SetValue (this List<NameValueHeaderValue> parameters, string key, string value)
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{
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for (int i = 0; i < parameters.Count; ++i) {
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var entry = parameters[i];
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if (!string.Equals (entry.Name, key, StringComparison.OrdinalIgnoreCase))
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continue;
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if (value == null) {
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parameters.RemoveAt (i);
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} else {
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parameters[i].Value = value;
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}
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return;
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}
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if (!string.IsNullOrEmpty (value))
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parameters.Add (new NameValueHeaderValue (key, value));
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}
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public static string ToString<T> (this List<T> list)
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{
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if (list == null || list.Count == 0)
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return null;
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const string separator = "; ";
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var sb = new StringBuilder ();
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for (int i = 0; i < list.Count; ++i) {
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sb.Append (separator);
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sb.Append (list [i]);
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}
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return sb.ToString ();
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}
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public static void ToStringBuilder<T> (this List<T> list, StringBuilder sb)
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{
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if (list == null || list.Count == 0)
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return;
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const string separator = ", ";
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for (int i = 0; i < list.Count; ++i) {
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if (i > 0) {
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sb.Append (separator);
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}
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sb.Append (list[i]);
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}
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}
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}
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}
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