[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);
}
private static void ValidateExtension(ExtensionCheck extensionCheck, string validExtension, string resourceName)
{
if (resourceName == null)
{
return;
}
// the supplied path represents a single resource
//
switch (extensionCheck)
{
case ExtensionCheck.Specific:
MetadataArtifactLoader.CheckArtifactExtension(resourceName, validExtension);
break;
case ExtensionCheck.All:
if (!MetadataArtifactLoader.IsValidArtifact(resourceName))
{
throw EntityUtil.Metadata(Strings.InvalidMetadataPath);
}
break;
}
}