#include <dlfcn.h>
#include "Extension.h"


bool Extension::load(const char* filename)
{
	// load libary
	libHandle = dlopen(filename, RTLD_LAZY);
	if(libHandle == NULL)
	{
		ERROR("File \"" << filename << "\": " << dlerror());
		return false;
	}
	
	// get FooBar
	foobarPtr = (int(*)(void*))(dlsym(libHandle, "FooBar"));
	if(foobarPtr == NULL)
	{
		ERROR("File \"" << filename << "\": \"FooBar\" entry symbol not found: " << dlerror());
		return false;
	}
	
	return true;
}


void Extension::unload()
{
	DEBUG_ERR(libHandle==NULL || foobarPtr==NULL);
	dlclose(libHandle);
	libHandle = NULL;
	foobarPtr = NULL;
}