Initial community commit

Src/replicant/metadata/svc_metadata.h

@@ -0,0 +1,65 @@
+#pragma once
+#include "foundation/foundation.h"
+#include "ifc_metadata.h"
+#include "ifc_metadata_editor.h"
+#include "nx/nxuri.h"
+
+// {7DBF780E-78B6-436C-A188-864AF6859D87}
+static const GUID metadata_service_type_guid =
+{ 0x7dbf780e, 0x78b6, 0x436c, { 0xa1, 0x88, 0x86, 0x4a, 0xf6, 0x85, 0x9d, 0x87 } };
+
+class svc_metadata : public Wasabi2::Dispatchable
+{
+protected:
+	svc_metadata() : Dispatchable(DISPATCHABLE_VERSION) {}
+	~svc_metadata() {}
+public:
+	static GUID GetServiceType() { return metadata_service_type_guid; }
+	// to make the implementation more flexible, you need to NXStringRelease on the extension you get (i.e. this function follows Apple's "Create" rule)
+	int EnumerateExtensions(unsigned int index, nx_string_t *extension) { return MetadataService_EnumerateExtensions(index, extension); }
+
+	int CreateMetadata(nx_uri_t filename, ifc_metadata **metadata) {return MetadataService_CreateMetadata(filename, metadata); }
+	int CreateMetadataEditor(nx_uri_t filename, ifc_metadata_editor **metadata) {	return MetadataService_CreateMetadataEditor(filename, metadata); 	}
+
+	int DeserializeMetadata(nx_data_t data, ifc_metadata **metadata) { return MetadataService_DeserializeMetadata(data, metadata); }
+
+	int CreateMetadata(unsigned int pass, nx_uri_t filename, ifc_metadata **metadata) 
+	{
+		if (dispatchable_version == 0)
+		{
+			if (pass == 0)
+				return MetadataService_CreateMetadata(filename, metadata); 
+			else
+				return NErr_False;
+		}
+		else 
+			return MetadataService_CreateMetadata(pass, filename, metadata); 
+	}
+	int CreateMetadataEditor(unsigned int pass, nx_uri_t filename, ifc_metadata_editor **metadata) 
+	{
+		if (dispatchable_version == 0)
+		{
+			if (pass == 0)
+				return MetadataService_CreateMetadataEditor(filename, metadata); 
+			else
+				return NErr_False;
+		}
+		else
+			return MetadataService_CreateMetadataEditor(pass, filename, metadata); 
+	}
+	enum
+	{
+		DISPATCHABLE_VERSION=1,
+	};
+private:
+	// implementation note: to make the implementation more flexible, you need to NXStringRetain on the extension you pass back (i.e. follow Apple's "Create" rule)
+	virtual int WASABICALL MetadataService_EnumerateExtensions(unsigned int index, nx_string_t *extension)=0;
+
+	/* these two no longer have to be implemented */
+	virtual int WASABICALL MetadataService_CreateMetadata(nx_uri_t filename, ifc_metadata **metadata) { return MetadataService_CreateMetadata(0, filename, metadata); } 
+	virtual int WASABICALL MetadataService_CreateMetadataEditor(nx_uri_t filename, ifc_metadata_editor **metadata) { return MetadataService_CreateMetadataEditor(0, filename, metadata); }
+
+	virtual int WASABICALL MetadataService_DeserializeMetadata(nx_data_t data, ifc_metadata **metadata) { return NErr_NotImplemented; }
+	virtual int WASABICALL MetadataService_CreateMetadata(unsigned int pass, nx_uri_t filename, ifc_metadata **metadata)=0;
+	virtual int WASABICALL MetadataService_CreateMetadataEditor(unsigned int pass, nx_uri_t filename, ifc_metadata_editor **metadata)=0;
+};