62 lines
1.9 KiB
C#
62 lines
1.9 KiB
C#
// Copyright (c) .NET Foundation. All rights reserved.
|
|
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Globalization;
|
|
using Microsoft.AspNet.Http;
|
|
|
|
namespace Microsoft.AspNet.Routing.Constraints
|
|
{
|
|
/// <summary>
|
|
/// Constrains a route parameter to represent only <see cref="Guid"/> values.
|
|
/// Matches values specified in any of the five formats "N", "D", "B", "P", or "X",
|
|
/// supported by Guid.ToString(string) and Guid.ToString(String, IFormatProvider) methods.
|
|
/// </summary>
|
|
public class GuidRouteConstraint : IRouteConstraint
|
|
{
|
|
/// <inheritdoc />
|
|
public bool Match(
|
|
HttpContext httpContext,
|
|
IRouter route,
|
|
string routeKey,
|
|
IDictionary<string, object> values,
|
|
RouteDirection routeDirection)
|
|
{
|
|
if (httpContext == null)
|
|
{
|
|
throw new ArgumentNullException(nameof(httpContext));
|
|
}
|
|
|
|
if (route == null)
|
|
{
|
|
throw new ArgumentNullException(nameof(route));
|
|
}
|
|
|
|
if (routeKey == null)
|
|
{
|
|
throw new ArgumentNullException(nameof(routeKey));
|
|
}
|
|
|
|
if (values == null)
|
|
{
|
|
throw new ArgumentNullException(nameof(values));
|
|
}
|
|
|
|
object value;
|
|
if (values.TryGetValue(routeKey, out value) && value != null)
|
|
{
|
|
if (value is Guid)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
Guid result;
|
|
var valueString = Convert.ToString(value, CultureInfo.InvariantCulture);
|
|
return Guid.TryParse(valueString, out result);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
}
|
|
} |