81 lines
2.2 KiB
C#
81 lines
2.2 KiB
C#
// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using System;
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using System.Globalization;
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using System.Text.RegularExpressions;
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using Microsoft.AspNet.Http;
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namespace Microsoft.AspNet.Routing.Constraints
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{
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public class RegexRouteConstraint : IRouteConstraint
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{
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private static readonly TimeSpan RegexMatchTimeout = TimeSpan.FromSeconds(10);
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public RegexRouteConstraint(Regex regex)
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{
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if (regex == null)
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{
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throw new ArgumentNullException(nameof(regex));
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}
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Constraint = regex;
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}
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public RegexRouteConstraint(string regexPattern)
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{
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if (regexPattern == null)
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{
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throw new ArgumentNullException(nameof(regexPattern));
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}
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Constraint = new Regex(
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regexPattern,
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RegexOptions.CultureInvariant | RegexOptions.IgnoreCase,
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RegexMatchTimeout);
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}
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public Regex Constraint { get; private set; }
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public bool Match(
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HttpContext httpContext,
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IRouter route,
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string routeKey,
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RouteValueDictionary values,
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RouteDirection routeDirection)
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{
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if (httpContext == null)
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{
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throw new ArgumentNullException(nameof(httpContext));
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}
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if (route == null)
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{
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throw new ArgumentNullException(nameof(route));
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}
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if (routeKey == null)
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{
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throw new ArgumentNullException(nameof(routeKey));
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}
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if (values == null)
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{
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throw new ArgumentNullException(nameof(values));
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}
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object routeValue;
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if (values.TryGetValue(routeKey, out routeValue)
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&& routeValue != null)
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{
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var parameterValueString = Convert.ToString(routeValue, CultureInfo.InvariantCulture);
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return Constraint.IsMatch(parameterValueString);
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}
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return false;
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}
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}
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}
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