SDL/test/testloadso.c
David Ludwig 3dcb451f85 Added a README file regarding WinRT support
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2014-04-09 21:29:19 -04:00

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C

/*
Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely.
*/
/* Test program to test dynamic loading with the loadso subsystem.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "SDL.h"
typedef int (*fntype) (const char *);
int
main(int argc, char *argv[])
{
int retval = 0;
int hello = 0;
const char *libname = NULL;
const char *symname = NULL;
void *lib = NULL;
fntype fn = NULL;
if (argc != 3) {
const char *app = argv[0];
SDL_Log("USAGE: %s <library> <functionname>\n", app);
SDL_Log(" %s --hello <lib with puts()>\n", app);
return 1;
}
/* Initialize SDL */
if (SDL_Init(0) < 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
return 2;
}
if (strcmp(argv[1], "--hello") == 0) {
hello = 1;
libname = argv[2];
symname = "puts";
} else {
libname = argv[1];
symname = argv[2];
}
lib = SDL_LoadObject(libname);
if (lib == NULL) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_LoadObject('%s') failed: %s\n",
libname, SDL_GetError());
retval = 3;
} else {
fn = (fntype) SDL_LoadFunction(lib, symname);
if (fn == NULL) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_LoadFunction('%s') failed: %s\n",
symname, SDL_GetError());
retval = 4;
} else {
SDL_Log("Found %s in %s at %p\n", symname, libname, fn);
if (hello) {
SDL_Log("Calling function...\n");
fflush(stdout);
fn(" HELLO, WORLD!\n");
SDL_Log("...apparently, we survived. :)\n");
SDL_Log("Unloading library...\n");
fflush(stdout);
}
}
SDL_UnloadObject(lib);
}
SDL_Quit();
return retval;
}