added plugin support

1 files changed, 80 insertions, 0 deletions

diff --git a/Source/cmDynamicLoader.h b/Source/cmDynamicLoader.h
new file mode 100644
index 0000000..d5cc612
--- /dev/null
+++ b/Source/cmDynamicLoader.h
@@ -0,0 +1,80 @@
+/*=========================================================================
+
+  Program:   Insight Segmentation & Registration Toolkit
+  Module:    $RCSfile$
+  Language:  C++
+  Date:      $Date$
+  Version:   $Revision$
+
+  Copyright (c) 2002 Insight Consortium. All rights reserved.
+  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
+
+     This software is distributed WITHOUT ANY WARRANTY; without even 
+     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
+     PURPOSE.  See the above copyright notices for more information.
+
+=========================================================================*/
+// .NAME cmDynamicLoader - class interface to system dynamic libraries
+// .SECTION Description
+// cmDynamicLoader provides a portable interface to loading dynamic 
+// libraries into a process.  
+
+
+#ifndef __cmDynamicLoader_h
+#define __cmDynamicLoader_h
+
+#include "cmStandardIncludes.h"
+
+// Ugly stuff for library handles
+// They are different on several different OS's
+#if defined(__hpux)
+# include <dl.h>
+  typedef shl_t cmLibHandle;
+#elif defined(_WIN32)
+  #include <windows.h>
+  typedef HMODULE cmLibHandle;
+#else
+  typedef void* cmLibHandle;
+#endif
+
+class cmDynamicLoader
+{
+public:
+  // Description:
+  // Load a dynamic library into the current process.
+  // The returned cmLibHandle can be used to access the symbols in the 
+  // library.
+  static cmLibHandle OpenLibrary(const char*);
+
+  // Description:
+  // Attempt to detach a dynamic library from the
+  // process.  A value of true is returned if it is successful.
+  static int CloseLibrary(cmLibHandle);
+  
+  // Description:
+  // Find the address of the symbol in the given library
+  static void* GetSymbolAddress(cmLibHandle, const char*);
+
+  // Description:
+  // Return the library prefix for the given architecture
+  static const char* LibPrefix();
+
+  // Description:
+  // Return the library extension for the given architecture
+  static const char* LibExtension();
+
+  // Description:
+  // Return the last error produced from a calls made on this class.
+  static const char* LastError();
+  
+protected:
+  cmDynamicLoader() {};
+  ~cmDynamicLoader() {};
+
+  
+private:
+  cmDynamicLoader(const cmDynamicLoader&);  // Not implemented.
+  void operator=(const cmDynamicLoader&);  // Not implemented.
+};
+
+#endif