slouken@5535: /*
slouken@5535:   Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
slouken@5535: 
slouken@5535:   This software is provided 'as-is', without any express or implied
slouken@5535:   warranty.  In no event will the authors be held liable for any damages
slouken@5535:   arising from the use of this software.
slouken@5535: 
slouken@5535:   Permission is granted to anyone to use this software for any purpose,
slouken@5535:   including commercial applications, and to alter it and redistribute it
slouken@5535:   freely.
slouken@5535: */
icculus@2067: 
slouken@3338: /* Test program to test dynamic loading with the loadso subsystem.
icculus@2067: */
icculus@2067: 
icculus@2067: #include <stdio.h>
icculus@2067: #include <stdlib.h>
slouken@3338: #include <string.h>
icculus@2067: 
icculus@2067: #include "SDL.h"
icculus@2067: 
slouken@2120: typedef int (*fntype) (const char *);
icculus@2067: 
slouken@2120: int
slouken@2120: main(int argc, char *argv[])
icculus@2067: {
slouken@2120:     int retval = 0;
slouken@2120:     int hello = 0;
slouken@2120:     const char *libname = NULL;
slouken@2120:     const char *symname = NULL;
slouken@2120:     void *lib = NULL;
slouken@2120:     fntype fn = NULL;
icculus@2067: 
slouken@2120:     if (argc != 3) {
slouken@2120:         const char *app = argv[0];
slouken@2120:         fprintf(stderr, "USAGE: %s <library> <functionname>\n", app);
slouken@2120:         fprintf(stderr, "       %s --hello <lib with puts()>\n", app);
slouken@2120:         return 1;
slouken@2120:     }
icculus@2067: 
slouken@2120:     /* Initialize SDL */
slouken@2120:     if (SDL_Init(0) < 0) {
slouken@2120:         fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
slouken@2120:         return 2;
slouken@2120:     }
icculus@2067: 
slouken@2120:     if (strcmp(argv[1], "--hello") == 0) {
slouken@2120:         hello = 1;
slouken@2120:         libname = argv[2];
slouken@2120:         symname = "puts";
slouken@2120:     } else {
slouken@2120:         libname = argv[1];
slouken@2120:         symname = argv[2];
slouken@2120:     }
icculus@2067: 
slouken@2120:     lib = SDL_LoadObject(libname);
slouken@2120:     if (lib == NULL) {
slouken@2120:         fprintf(stderr, "SDL_LoadObject('%s') failed: %s\n",
slouken@2120:                 libname, SDL_GetError());
slouken@2120:         retval = 3;
slouken@2120:     } else {
slouken@2120:         fn = (fntype) SDL_LoadFunction(lib, symname);
slouken@2120:         if (fn == NULL) {
slouken@2120:             fprintf(stderr, "SDL_LoadFunction('%s') failed: %s\n",
slouken@2120:                     symname, SDL_GetError());
slouken@2120:             retval = 4;
slouken@2120:         } else {
slouken@2120:             printf("Found %s in %s at %p\n", symname, libname, fn);
slouken@2120:             if (hello) {
slouken@2120:                 printf("Calling function...\n");
slouken@2120:                 fflush(stdout);
slouken@2120:                 fn("     HELLO, WORLD!\n");
slouken@2120:                 printf("...apparently, we survived.  :)\n");
slouken@2120:                 printf("Unloading library...\n");
slouken@2120:                 fflush(stdout);
slouken@2120:             }
slouken@2120:         }
slouken@2120:         SDL_UnloadObject(lib);
slouken@2120:     }
slouken@2120:     SDL_Quit();
slouken@2120:     return (0);
icculus@2067: }