ObjFW  Check-in [204b27318f]

<h1 id="first-app">Writing your first application with ObjFW</h1>

  To create your first, empty application, you can use `objfw-new`:

    $ objfw-new --app MyFirstApp

  This creates a file `MyFirstApp.m`. The `-[applicationDidFinishLaunching:]`
  method is called as soon as ObjFW finished all initialization. Use this as
  the entry point to your own code. For example, you could add the following
  line there to create a "Hello World":

    [OFStdOut writeLine: @"Hello World!"];

  You can compile your new app using `objfw-compile`:

@interface LibraryGenerator: OFObject <OFApplicationDelegate>
@end

OF_APPLICATION_DELEGATE(LibraryGenerator)

@implementation LibraryGenerator
- (void)applicationDidFinishLaunching: (OFNotification *)notification
{
	OFURI *sourcesURI = [[OFFileManager defaultManager].currentDirectoryURI
	    URIByAppendingPathComponent: @"../../src"];
	OFURI *runtimeLibraryURI = [sourcesURI
	    URIByAppendingPathComponent: @"runtime/amiga-library.xml"];
	OFURI *runtimeLinkLibURI = [sourcesURI
	    URIByAppendingPathComponent: @"runtime/linklib/linklib.m"];

		[self release];
		@throw e;
	}

	return self;
}

- (void)applicationDidFinishLaunching: (OFNotification *)notification
{
	OFHTTPRequest *request;

	[OFStdOut writeString: @"Downloading UnicodeData.txt…"];
	_state = stateUnicodeData;
	request = [OFHTTPRequest requestWithURI:
	    [OFURI URIWithString: unicodeDataURI]];

@class OFArray OF_GENERIC(ObjectType);
@class OFDictionary OF_GENERIC(KeyType, ObjectType);
@class OFMutableArray OF_GENERIC(ObjectType);
@class OFMutableDictionary OF_GENERIC(KeyType, ObjectType);
@class OFSandbox;
@class OFString;

/**
 * @brief A notification that will be sent when the application did finish
 *	  launching.
 */
extern const OFNotificationName OFApplicationDidFinishLaunchingNotification;

/**
 * @brief A notification that will be sent when the application will terminate.
 */
extern const OFNotificationName OFApplicationWillTerminateNotification;

/**
 * @brief Specify the class to be used as the application delegate.

 * @interface MyAppDelegate: OFObject <OFApplicationDelegate>
 * @end
 *
 * // In MyAppDelegate.m:
 * OF_APPLICATION_DELEGATE(MyAppDelegate)
 *
 * @implementation MyAppDelegate
 * - (void)applicationDidFinishLaunching: (OFNotification *)notification
 * {
 *         [OFApplication terminate];
 * }
 * @end
 * @endcode
 */
#define OF_APPLICATION_DELEGATE(class_)			\

 *
 * @note Signals are not available on AmigaOS!
 */
@protocol OFApplicationDelegate <OFObject>
/**
 * @brief A method which is called when the application was initialized and is
 *	  running now.
 *
 * @param notification A notification with name
 *		       OFApplicationDidFinishLaunchingNotification
 */
- (void)applicationDidFinishLaunching: (OFNotification *)notification;

@optional
/**
 * @brief A method which is called when the application will terminate.
 *
 * @param notification A notification with name
 *		       OFApplicationWillTerminateNotification
 */
- (void)applicationWillTerminate: (OFNotification *)notification;

/**
 * @brief A method which is called when the application received a SIGINT.
 *
 * @warning You are not allowed to send any messages inside this method, as
 *	    message dispatching is not signal-safe! You are only allowed to do
 *	    signal-safe operations like setting a variable or calling a

	  andArgumentValues: (char **[])argv
       andWideArgumentCount: (int)wargc
      andWideArgumentValues: (wchar_t *[])wargv;
#endif
- (void)of_run;
@end

const OFNotificationName OFApplicationDidFinishLaunchingNotification =
    @"OFApplicationDidFinishLaunchingNotification";
const OFNotificationName OFApplicationWillTerminateNotification =
    @"OFApplicationWillTerminateNotification";
static OFApplication *app = nil;

static void
atexitHandler(void)
{
	id <OFApplicationDelegate> delegate = app.delegate;

	OFNotification *notification = [OFNotification
	    notificationWithName: OFApplicationWillTerminateNotification
			  object: app];

	if ([delegate respondsToSelector: @selector(applicationWillTerminate:)])
		[delegate applicationWillTerminate: notification];

	[delegate release];

	[[OFNotificationCenter defaultCenter] postNotification: notification];

#if defined(OF_HAVE_THREADS) && defined(OF_HAVE_SOCKETS) && \
    defined(OF_AMIGAOS) && !defined(OF_MORPHOS)
	OFSocketDeinit();
#endif
}

#undef REGISTER_SIGNAL
}

- (void)of_run
{
	void *pool = objc_autoreleasePoolPush();
	OFRunLoop *runLoop;
	OFNotification *notification;

#ifdef OF_HAVE_THREADS
	[OFThread of_createMainThread];
	runLoop = [OFRunLoop currentRunLoop];
#else
	runLoop = [[[OFRunLoop alloc] init] autorelease];
#endif

	[OFRunLoop of_setMainRunLoop: runLoop];

	objc_autoreleasePoolPop(pool);

	/*
	 * Note: runLoop is still valid after the release of the pool, as
	 * of_setMainRunLoop: retained it. However, we only have a weak
	 * reference to it now, whereas we had a strong reference before.
	 */

	pool = objc_autoreleasePoolPush();

	notification = [OFNotification
	    notificationWithName: OFApplicationDidFinishLaunchingNotification
			  object: app];

	[[OFNotificationCenter defaultCenter] postNotification: notification];

	[_delegate applicationDidFinishLaunching: notification];

	objc_autoreleasePoolPop(pool);

	[runLoop run];
}

- (void)terminate
{

	if (OFStdOut.hasTerminal) {
		[OFStdOut writeString: @"\r"];
		[OFStdOut reset];
		[OFStdOut eraseLine];
	}
}

- (void)applicationDidFinishLaunching: (OFNotification *)notification
{
#if defined(OF_IOS) && defined(OF_HAVE_FILES)
	CFBundleRef mainBundle = CFBundleGetMainBundle();
	CFURLRef resourcesURL = CFBundleCopyResourcesDirectoryURL(mainBundle);
	UInt8 resourcesPath[PATH_MAX];

	if (!CFURLGetFileSystemRepresentation(resourcesURL, true, resourcesPath,

@interface TerminalTests: OFObject <OFApplicationDelegate>
@end

OF_APPLICATION_DELEGATE(TerminalTests)

@implementation TerminalTests
- (void)applicationDidFinishLaunching: (OFNotification *)notification
{
	OFArray *colors = [OFArray arrayWithObjects:
	    [OFColor black], [OFColor silver], [OFColor grey], [OFColor white],
	    [OFColor maroon], [OFColor red], [OFColor purple],
	    [OFColor fuchsia], [OFColor green], [OFColor lime], [OFColor olive],
	    [OFColor yellow], [OFColor navy], [OFColor blue], [OFColor teal],
	    [OFColor aqua], nil];

			   @"\n"
			   @"@interface %@: OFObject <OFApplicationDelegate>\n"
			   @"@end\n"
			   @"\n"
			   @"OF_APPLICATION_DELEGATE(%@)\n"
			   @"\n"
			   @"@implementation %@\n"
			   @"- (void)applicationDidFinishLaunching: "
			   @"(OFNotification *)notification\n"
			   @"{\n"
			   @"	[OFApplication terminate];\n"
			   @"}\n"
			   @"@end\n",
			   name, name, name];

	[file close];
}

	[OFStdErr writeFormat: @"Usage: %@ --app|--class name\n",
			       [OFApplication programName]];

	[OFApplication terminateWithStatus: 1];
}

@implementation ObjFWNew
- (void)applicationDidFinishLaunching: (OFNotification *)notification
{
	bool app, class;
	OFString *superclass = nil, *name;
	OFMutableArray OF_GENERIC(OFString *) *properties = nil;
	const OFOptionsParserOption options[] = {
		{ 'a', @"app", 0, &app, NULL },
		{ 'c', @"class", 0, &class, NULL },

			[expandedFiles addObject: file];
	}

	[archive addFiles: expandedFiles];
}

@implementation OFArc
- (void)applicationDidFinishLaunching: (OFNotification *)notification
{
	OFString *outputDir, *encodingString, *type;
	const OFOptionsParserOption options[] = {
		{ 'a', @"append", 0, NULL, NULL },
		{ 'c', @"create", 0, NULL, NULL },
		{ 'C', @"directory", 1, NULL, &outputDir },
		{ 'E', @"encoding", 1, NULL, &encodingString },

		_errors++;
	}

	if (_inFlight == 0)
		[OFApplication terminateWithStatus: _errors];
}

- (void)applicationDidFinishLaunching: (OFNotification *)notification
{
	OFString *DNSClassString, *server;
	const OFOptionsParserOption options[] = {
		{ 'c', @"class", 1, NULL, &DNSClassString },
		{ 'h', @"help", 0, NULL, NULL },
		{ 's', @"server", 1, NULL, &server },
		{ 't', @"type", 1, NULL, NULL },

	for (size_t i = 0; i < digestSize; i++)
		[OFStdOut writeFormat: @"%02x", digest[i]];

	[OFStdOut writeFormat: @"  %@\n", path];
}

@implementation OFHash
- (void)applicationDidFinishLaunching: (OFNotification *)notification
{
	int exitStatus = 0;
	bool calculateMD5, calculateRIPEMD160, calculateSHA1, calculateSHA224;
	bool calculateSHA256, calculateSHA384, calculateSHA512;
	const OFOptionsParserOption options[] = {
		{ '\0', @"md5", 0, &calculateMD5, NULL },
		{ '\0', @"ripemd160", 0, &calculateRIPEMD160, NULL },

		[OFStdErr writeLine: OF_LOCALIZED(@"invalid_input_proxy",
		    @"%[prog]: Proxy must to be in format host:port!",
		    @"prog", [OFApplication programName])];
		[OFApplication terminateWithStatus: 1];
	}
}

- (void)applicationDidFinishLaunching: (OFNotification *)notification
{
	OFString *outputPath;
	const OFOptionsParserOption options[] = {
		{ 'b', @"body",	1, NULL, NULL },
		{ 'c', @"continue", 0, &_continue, NULL },
		{ 'f', @"force", 0, &_force, NULL },
		{ 'h', @"help",	0, NULL, NULL },