Use SDL_GetBasePath for better portability

SDL/utils.c

@@ -1,62 +1,24 @@
+#include <SDL2/SDL.h>
 #include <stdio.h>
 #include <string.h>
-#ifdef __APPLE__
-#include <mach-o/dyld.h>
-#endif
-#ifdef _WIN32
-#include <direct.h>
-#include <windows.h>
-#endif
-#ifdef __linux__
-#include <assert.h>
-#include <unistd.h>
-#endif
 #include "utils.h"
 
 const char *executable_folder(void)
 {
-    static char path[1024] = {0,};
-    if (path[0]) {
-        return path;
-    }
-    /* Ugly unportable code! :( */
-#ifdef __APPLE__
-    unsigned int length = sizeof(path) - 1;
-    _NSGetExecutablePath(&path[0], &length);
-#else
-#ifdef __linux__
-    ssize_t __attribute__((unused)) length = readlink("/proc/self/exe", &path[0], sizeof(path) - 1);
-    assert (length != -1);
-#else
-#ifdef _WIN32
-    HMODULE hModule = GetModuleHandle(NULL);
-    GetModuleFileName(hModule, path, sizeof(path) - 1);
-#else
-    /* No OS-specific way, assume running from CWD */
-    getcwd(&path[0], sizeof(path) - 1);
-    return path;
-#endif
-#endif
-#endif
-    size_t pos = strlen(path);
-    while (pos) {
-        pos--;
-#ifdef _WIN32
-        if (path[pos] == '\\') {
-#else
-        if (path[pos] == '/') {
-#endif
-            path[pos] = 0;
-            break;
+    static const char *ret = NULL;
+    if (!ret) {
+        ret = SDL_GetBasePath();
+        if (!ret) {
+            ret = "./";
         }
     }
-    return path;
+    return ret;
 }
 
 char *executable_relative_path(const char *filename)
 {
     static char path[1024];
-    snprintf(path, sizeof(path), "%s/%s", executable_folder(), filename);
+    snprintf(path, sizeof(path), "%s%s", executable_folder(), filename);
     return path;
 }