/// <inheritdoc />
VersionResult?IVersionStrategy.GetVersion(HttpContext context, RouteData routeData)
{
if (routeData == null)
{
throw new ArgumentNullException(nameof(routeData));
}
var routeValues = routeData.Values;
object versionObject;
if (!routeValues.TryGetValue(RouteValueKey, out versionObject))
{
return(null);
}
var versionString = versionObject as string;
int version;
if (ParsingUtility.TryParseVersion(versionString, out version))
{
return(new VersionResult(version));
}
return(null);
}
/// <inheritdoc />
public VersionResult?GetVersion(HttpContext context, RouteData routeData)
{
if (context.Request.Query.TryGetValue(ParameterName, out var values))
{
var versionString = values.ToString();
if (ParsingUtility.TryParseVersion(versionString, out var version))
{
return(new VersionResult(version));
}
}
return(null);
}
private static bool TryGetParameterVersion(MediaTypeHeaderValue acceptHeader, string parameterName, out int version)
{
foreach (var parameter in acceptHeader.Parameters)
{
if (parameter.Name.Equals(parameterName, StringComparison.OrdinalIgnoreCase))
{
if (ParsingUtility.TryParseVersion(parameter.Value, out version))
{
return(true);
}
}
}
version = 0;
return(false);
}
private static bool TryGetFacetVersion(StringSegment subType, out int version)
{
var facetSeparatorIndex = subType.IndexOf('.');
if (facetSeparatorIndex >= 0)
{
var facets = subType.Split(DotSeparator).Reverse();
foreach (var facet in facets)
{
if (ParsingUtility.TryParseVersion(facet, out version))
{
return(true);
}
}
}
version = 0;
return(false);
}
/// <inheritdoc />
VersionResult?IVersionStrategy.GetVersion(HttpContext context, RouteData routeData)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var headers = context.Request.Headers;
if (headers.TryGetValue(HeaderName, out var header))
{
var headerString = header.ToString();
if (ParsingUtility.TryParseVersion(headerString, out var version))
{
return(new VersionResult(version, HeaderName));
}
}
return(null);
}
