Initial release

engine/vendor/vst3sdk/base/source/fdynlib.h

@@ -0,0 +1,92 @@
+//------------------------------------------------------------------------
+// Project     : SDK Base
+// Version     : 1.0
+//
+// Category    : Helpers
+// Filename    : base/source/fdynlib.h
+// Created by  : Steinberg, 1998
+// Description : Dynamic library loading
+//
+//-----------------------------------------------------------------------------
+// This file is part of a Steinberg SDK. It is subject to the license terms
+// in the LICENSE file found in the top-level directory of this distribution
+// and at www.steinberg.net/sdklicenses. 
+// No part of the SDK, including this file, may be copied, modified, propagated,
+// or distributed except according to the terms contained in the LICENSE file.
+//-----------------------------------------------------------------------------
+
+//------------------------------------------------------------------------
+/** @file base/source/fdynlib.h
+	Platform independent dynamic library loading. */
+//------------------------------------------------------------------------
+#pragma once
+
+#include "pluginterfaces/base/ftypes.h"
+#include "base/source/fobject.h"
+
+namespace Steinberg {
+
+//------------------------------------------------------------------------
+/** Platform independent dynamic library loader. */
+//------------------------------------------------------------------------
+class FDynLibrary : public FObject
+{
+public:
+//------------------------------------------------------------------------
+	/** Constructor.
+	
+		Loads the specified dynamic library.
+
+		@param[in] name the path of the library to load.
+		@param[in] addExtension if @c true append the platform dependent default extension to @c name.
+
+		@remarks
+		- If @c name specifies a full path, the FDynLibrary searches only that path for the library.
+		- If @c name specifies a relative path or a name without path, 
+		  FDynLibrary uses a standard search strategy of the current platform to find the library; 
+		- If @c name is @c NULL the library is not loaded. 
+		  - Use init() to load the library. */
+	FDynLibrary (const tchar* name = nullptr, bool addExtension = true);
+	
+	/** Destructor.
+		The destructor unloads the library.*/
+	~FDynLibrary () override;
+
+	/** Loads the library if not already loaded.
+		This function is normally called by FDynLibrary(). 
+		@remarks If the library is already loaded, this call has no effect. */
+	bool init (const tchar* name, bool addExtension = true);
+
+	/** Returns the address of the procedure @c name */ 
+	void* getProcAddress (const char* name);
+
+	/** Returns true when the library was successfully loaded. */
+	bool isLoaded () {return isloaded;} 
+
+	/** Unloads the library if it is loaded.
+		This function is called by ~FDynLibrary (). */
+	bool unload ();
+	
+	/** Returns the platform dependent representation of the library instance. */
+	void* getPlatformInstance () const { return instance; } 
+
+#if SMTG_OS_MACOS
+	/** Returns @c true if the library is a bundle (Mac only). */
+	bool isBundleLib () const { return isBundle; }
+#endif
+
+//------------------------------------------------------------------------
+	OBJ_METHODS(FDynLibrary, FObject)
+protected:	
+	bool isloaded;
+
+	void* instance;
+
+#if SMTG_OS_MACOS
+	void* firstSymbol;
+	bool isBundle;
+#endif
+};
+
+//------------------------------------------------------------------------
+} // namespace Steinberg