internal static MetadataArtifactLoader CreateResourceLoader(string path, ExtensionCheck extensionCheck, string validExtension, ICollection <string> uriRegistry, MetadataArtifactAssemblyResolver resolver)
{
Debug.Assert(path != null);
Debug.Assert(MetadataArtifactLoader.PathStartsWithResPrefix(path));
// if the supplied path ends with a separator, or contains only one
// segment (i.e., the name of an assembly, or the wildcard character),
// create a composite loader that can extract resources from one or
// more assemblies
//
bool createCompositeResLoader = false;
string assemblyName = null;
string resourceName = null;
ParseResourcePath(path, out assemblyName, out resourceName);
createCompositeResLoader = (assemblyName != null) && (resourceName == null || assemblyName.Trim() == wildcard);
ValidateExtension(extensionCheck, validExtension, resourceName);
if (createCompositeResLoader)
{
return(new MetadataArtifactLoaderCompositeResource(path, assemblyName, resourceName, uriRegistry, resolver));
}
Debug.Assert(!string.IsNullOrEmpty(resourceName), "we should not get here is the resourceName is null");
Assembly assembly = ResolveAssemblyName(assemblyName, resolver);
return(new MetadataArtifactLoaderResource(assembly, resourceName, uriRegistry));
}
[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);
}
