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/* ****************************************************************************
*
* Copyright (c) Microsoft Corporation. All rights reserved.
*
* This software is subject to the Microsoft Public License (Ms-PL).
* A copy of the license can be found in the license.htm file included
* in this distribution.
*
* You must not remove this notice, or any other, from this software.
*
* ***************************************************************************/
namespace System.Web.Mvc {
using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Globalization;
using System.Linq;
public class NameValueCollectionValueProvider : IValueProvider {
private readonly HashSet<string> _prefixes = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
private readonly Dictionary<string, ValueProviderResult> _values = new Dictionary<string, ValueProviderResult>(StringComparer.OrdinalIgnoreCase);
public NameValueCollectionValueProvider(NameValueCollection collection, CultureInfo culture) {
if (collection == null) {
throw new ArgumentNullException("collection");
}
AddValues(collection, culture);
}
private void AddValues(NameValueCollection collection, CultureInfo culture) {
if (collection.Count > 0) {
_prefixes.Add("");
}
foreach (string key in collection) {
if (key != null) {
_prefixes.UnionWith(ValueProviderUtil.GetPrefixes(key));
string[] rawValue = collection.GetValues(key);
string attemptedValue = collection[key];
_values[key] = new ValueProviderResult(rawValue, attemptedValue, culture);
}
}
}
public virtual bool ContainsPrefix(string prefix) {
if (prefix == null) {
throw new ArgumentNullException("prefix");
}
return _prefixes.Contains(prefix);
}
public virtual ValueProviderResult GetValue(string key) {
if (key == null) {
throw new ArgumentNullException("key");
}
ValueProviderResult vpResult;
_values.TryGetValue(key, out vpResult);
return vpResult;
}
}
}
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