failed approach

gomspace/libutil/include/gs/util/linux/function.h

@@ -0,0 +1,49 @@
+#ifndef GS_UTIL_LINUX_FUNCTION_H
+#define GS_UTIL_LINUX_FUNCTION_H
+/* Copyright (c) 2013-2018 GomSpace A/S. All rights reserved. */
+/**
+   @file
+
+   Function interface - invokes a function by name.
+*/
+
+#include <gs/util/error.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+   Function prototype.
+   @param[in] arg argument provided to gs_function_invoke().
+   @return_gs_error_t
+*/
+typedef gs_error_t (*gs_function_t)(void * arg);
+
+/**
+   Register \a function by name.
+
+   @param[in] short_name short name for function, used by gs_function_invoke() to find function to invoke.
+   @param[in] long_name long name (unique) for function, used by gs_function_invoke() to find function to invoke.
+   @param[in] function function to be invoked by gs_function_invoke()
+   @return #GS_ERROR_FULL if registry is full.
+   @return_gs_error_t
+*/
+gs_error_t gs_function_register(const char * short_name, const char * long_name, gs_function_t function);
+
+/**
+   Invoke \a function by name.
+
+   The return value is from the registered function, except for #GS_ERROR_NOT_IMPLEMENTED.
+
+   @param[in] name registered function name.
+   @param[in] arg argument for function.
+   @return #GS_ERROR_NOT_IMPLEMENTED if the \a name isn't found.
+   @return_gs_error_t
+*/
+gs_error_t gs_function_invoke(const char * name, void * arg);
+
+#ifdef __cplusplus
+}
+#endif
+#endif