[ResourceConsumption(ResourceScope.Machine)] //For CheckArtifactExtension method call. But the path is not created in this method.
internal static MetadataArtifactLoader Create(string path,
ExtensionCheck extensionCheck,
string validExtension,
ICollection <string> uriRegistry,
MetadataArtifactAssemblyResolver resolver)
{
Debug.Assert(path != null);
Debug.Assert(resolver != null);
// res:// -based artifacts
//
if (MetadataArtifactLoader.PathStartsWithResPrefix(path))
{
return(MetadataArtifactLoaderCompositeResource.CreateResourceLoader(path, extensionCheck, validExtension, uriRegistry, resolver));
}
// Files and Folders
//
string normalizedPath = MetadataArtifactLoader.NormalizeFilePaths(path);
if (Directory.Exists(normalizedPath))
{
return(new MetadataArtifactLoaderCompositeFile(normalizedPath, uriRegistry));
}
else if (File.Exists(normalizedPath))
{
switch (extensionCheck)
{
case ExtensionCheck.Specific:
CheckArtifactExtension(normalizedPath, validExtension);
break;
case ExtensionCheck.All:
if (!MetadataArtifactLoader.IsValidArtifact(normalizedPath))
{
throw EntityUtil.Metadata(Strings.InvalidMetadataPath);
}
break;
}
return(new MetadataArtifactLoaderFile(normalizedPath, uriRegistry));
}
throw EntityUtil.Metadata(Strings.InvalidMetadataPath);
}
/// <summary>
/// Constructor - loads the resource stream
/// </summary>
/// <param name="path">The path to the resource to load</param>
/// <param name="uriRegistry">The global registry of URIs</param>
internal MetadataArtifactLoaderResource(Assembly assembly, string resourceName, ICollection <string> uriRegistry)
{
Debug.Assert(assembly != null);
Debug.Assert(resourceName != null);
_assembly = assembly;
_resourceName = resourceName;
string tempPath = MetadataArtifactLoaderCompositeResource.CreateResPath(_assembly, _resourceName);
_alreadyLoaded = uriRegistry.Contains(tempPath);
if (!_alreadyLoaded)
{
uriRegistry.Add(tempPath);
// '_alreadyLoaded' is not set because while we would like to prevent
// other instances of MetadataArtifactLoaderFile that wrap the same
// _path from being added to the list of paths/readers, we do want to
// include this particular instance.
}
}
