public static UdiRange Parse(string s)
{
Uri uri;
if (Uri.IsWellFormedUriString(s, UriKind.Absolute) == false ||
Uri.TryCreate(s, UriKind.Absolute, out uri) == false)
{
//if (tryParse) return false;
throw new FormatException(string.Format("String \"{0}\" is not a valid udi range.", s));
}
var udiUri = uri.Query == string.Empty ? uri : new UriBuilder(uri)
{
Query = string.Empty
}.Uri;
return(new UdiRange(Udi.Create(udiUri), uri.Query.TrimStart(Constants.CharArrays.QuestionMark)));
}
/// <summary>
/// Initializes a new instance of the <see cref="UdiRange"/> class with a <see cref="Core.Udi"/> and an optional selector.
/// </summary>
/// <param name="udi">A <see cref="Udi"/>.</param>
/// <param name="selector">An optional selector.</param>
public UdiRange(Udi udi, string selector = Constants.DeploySelector.This)
{
Udi = udi;
switch (selector)
{
case Constants.DeploySelector.This:
Selector = selector;
_uriValue = udi.UriValue;
break;
case Constants.DeploySelector.ChildrenOfThis:
case Constants.DeploySelector.DescendantsOfThis:
case Constants.DeploySelector.ThisAndChildren:
case Constants.DeploySelector.ThisAndDescendants:
Selector = selector;
_uriValue = new Uri(Udi + "?" + selector);
break;
default:
throw new ArgumentException(string.Format("Invalid selector \"{0}\".", selector));
}
}
/// <summary>
/// Converts the string representation of an entity identifier into the equivalent Udi instance.
/// </summary>
/// <param name="s">The string to convert.</param>
/// <param name="udi">An Udi instance that contains the value that was parsed.</param>
/// <returns>A boolean value indicating whether the string could be parsed.</returns>
public static bool TryParse(string s, out Udi udi)
{
return(ParseInternal(s, true, false, out udi));
}
private static bool ParseInternal(string s, bool tryParse, bool knownTypes, out Udi udi)
{
udi = null;
Uri uri;
if (Uri.IsWellFormedUriString(s, UriKind.Absolute) == false ||
Uri.TryCreate(s, UriKind.Absolute, out uri) == false)
{
if (tryParse)
{
return(false);
}
throw new FormatException(string.Format("String \"{0}\" is not a valid udi.", s));
}
var entityType = uri.Host;
if (UdiTypes.TryGetValue(entityType, out var udiType) == false)
{
if (knownTypes)
{
// not knowing the type is not an error
// just return the unknown type udi
udi = UnknownTypeUdi.Instance;
return(false);
}
if (tryParse)
{
return(false);
}
throw new FormatException(string.Format("Unknown entity type \"{0}\".", entityType));
}
var path = uri.AbsolutePath.TrimStart('/');
if (udiType == UdiType.GuidUdi)
{
if (path == string.Empty)
{
udi = GetRootUdi(uri.Host);
return(true);
}
if (Guid.TryParse(path, out var guid) == false)
{
if (tryParse)
{
return(false);
}
throw new FormatException(string.Format("String \"{0}\" is not a valid udi.", s));
}
udi = new GuidUdi(uri.Host, guid);
return(true);
}
if (udiType == UdiType.StringUdi)
{
udi = path == string.Empty ? GetRootUdi(uri.Host) : new StringUdi(uri.Host, Uri.UnescapeDataString(path));
return(true);
}
if (tryParse)
{
return(false);
}
throw new InvalidOperationException(string.Format("Invalid udi type \"{0}\".", udiType));
}
/// <summary>
/// Converts the string representation of an entity identifier into the equivalent Udi instance.
/// </summary>
/// <param name="s">The string to convert.</param>
/// <param name="knownTypes">A value indicating whether to only deal with known types.</param>
/// <param name="udi">An Udi instance that contains the value that was parsed.</param>
/// <returns>A boolean value indicating whether the string could be parsed.</returns>
/// <remarks>
/// <para>If <paramref name="knownTypes"/> is <c>true</c>, and the string could not be parsed because
/// the entity type was not known, the method returns <c>false</c> but still sets <c>udi</c>
/// to an <see cref="UnknownTypeUdi"/> value.</para>
/// <para>If <paramref name="knownTypes"/> is <c>true</c>, assemblies are not scanned for types,
/// and therefore only builtin types may be known. Unless scanning already took place.</para>
/// </remarks>
public static bool TryParse(string s, bool knownTypes, out Udi udi)
{
return(ParseInternal(s, true, knownTypes, out udi));
}
/// <summary>
/// Converts the string representation of an entity identifier into the equivalent Udi instance.
/// </summary>
/// <param name="s">The string to convert.</param>
/// <param name="udi">An Udi instance that contains the value that was parsed.</param>
/// <returns>A boolean value indicating whether the string could be parsed.</returns>
public static bool TryParse(string s, [MaybeNullWhen(returnValue: false)] out Udi udi)
{
return(ParseInternal(s, true, false, out udi));
}