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MacOSX/SDLMain.m

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+/*   SDLMain.m - main entry point for our Cocoa-ized SDL app
+       Initial Version: Darrell Walisser <dwaliss1@purdue.edu>
+       Non-NIB-Code & other changes: Max Horn <max@quendi.de>
+
+    Feel free to customize this file to suit your needs
+*/
+
+#if defined(SDL_FRAMEWORK) || defined(NO_SDL_CONFIG)
+#if defined(USE_SDL2)
+#import <SDL2/SDL.h>
+#else
+#import <SDL/SDL.h>
+#endif
+#else
+#import "SDL.h"
+#endif
+#import "SDLMain.h"
+#import <sys/param.h> /* for MAXPATHLEN */
+#import <unistd.h>
+#import "SDLApplication.h"
+
+int    gArgc;
+char  **gArgv;
+BOOL   gFinderLaunch;
+BOOL   gCalledAppMainline = FALSE;
+
+/* The main class of the application, the application's delegate */
+@implementation SDLMain
+
+/* Set the working directory to the .app's parent directory */
+- (void) setupWorkingDirectory:(BOOL)shouldChdir
+{
+    if (shouldChdir)
+    {
+        char parentdir[MAXPATHLEN];
+		CFURLRef url = CFBundleCopyBundleURL(CFBundleGetMainBundle());
+		CFURLRef url2 = CFURLCreateCopyDeletingLastPathComponent(0, url);
+		if (CFURLGetFileSystemRepresentation(url2, true, (UInt8 *)parentdir, MAXPATHLEN)) {
+	        assert ( chdir (parentdir) == 0 );   /* chdir to the binary app's parent */
+		}
+		CFRelease(url);
+		CFRelease(url2);
+	}
+
+}
+
+/* Called when the internal event loop has just started running */
+- (void) applicationDidFinishLaunching: (NSNotification *) note
+{
+    int status;
+
+    /* Set the working directory to the .app's parent directory */
+    [self setupWorkingDirectory:gFinderLaunch];
+
+    /* Hand off to main application code */
+    gCalledAppMainline = TRUE;
+    status = SDL_main (gArgc, gArgv);
+
+    /* We're done, thank you for playing */
+    exit(status);
+}
+@end
+
+
+#ifdef main
+#  undef main
+#endif
+
+
+static int IsRootCwd()
+{
+    char buf[MAXPATHLEN];
+    char *cwd = getcwd(buf, sizeof (buf));
+    return (cwd && (strcmp(cwd, "/") == 0));
+}
+
+static int IsFinderLaunch(const int argc, char **argv)
+{
+    /* -psn_XXX is passed if we are launched from Finder, SOMETIMES */
+    if ( (argc >= 2) && (strncmp(argv[1], "-psn", 4) == 0) ) {
+        return 1;
+    } else if ((argc == 1) && IsRootCwd()) {
+        /* we might still be launched from the Finder; on 10.9+, you might not
+        get the -psn command line anymore. If there's no
+        command line, and if our current working directory is "/", it
+        might as well be a Finder launch. */
+        return 1;
+    }
+    return 0;  /* not a Finder launch. */
+}
+
+/* Main entry point to executable - should *not* be SDL_main! */
+int main (int argc, char **argv)
+{
+    /* Copy the arguments into a global variable */
+    if (IsFinderLaunch(argc, argv)) {
+        gArgv = (char **) SDL_malloc(sizeof (char *) * 2);
+        gArgv[0] = argv[0];
+        gArgv[1] = NULL;
+        gArgc = 1;
+        gFinderLaunch = YES;
+    } else {
+        int i;
+        gArgc = argc;
+        gArgv = (char **) SDL_malloc(sizeof (char *) * (argc+1));
+        for (i = 0; i <= argc; i++)
+            gArgv[i] = argv[i];
+        gFinderLaunch = NO;
+    }
+
+    NSApplicationMain (argc, (const char**) argv);
+    return 0;
+}