ObjFW  Diff

		    environment: (OFDictionary *)environment
{
	self = [super init];

	@try {
		void *pool = objc_autoreleasePoolPush();
		const char *path;
		char **argv, **env = NULL;

		_pid = -1;
		_readPipe[0] = _writePipe[1] = -1;

		if (pipe(_readPipe) != 0 || pipe(_writePipe) != 0)
			@throw [OFInitializationFailedException
			    exceptionWithClass: self.class];

		path = [program cStringWithEncoding: [OFLocale encoding]];
		[self of_getArgv: &argv
		  forProgramName: programName
		    andArguments: arguments];

		@try {

			env = [self of_environmentForDictionary: environment];
#ifdef HAVE_POSIX_SPAWNP
			posix_spawn_file_actions_t actions;
			posix_spawnattr_t attr;

			if (posix_spawn_file_actions_init(&actions) != 0)
				@throw [OFInitializationFailedException
				    exceptionWithClass: self.class];

			}

			if (_pid == -1)
				@throw [OFInitializationFailedException
				    exceptionWithClass: self.class];
#endif
		} @finally {
			char **iter;

			close(_readPipe[1]);
			close(_writePipe[0]);
			free(argv);

			for (iter = env; *iter != NULL; iter++)
				free(*iter);

			free(env);
		}

		objc_autoreleasePoolPop(pool);
	} @catch (id e) {
		[self release];
		@throw e;
	}

    forProgramName: (OFString *)programName
      andArguments: (OFArray *)arguments
{
	OFString *const *objects = arguments.objects;
	size_t i, count = arguments.count;
	of_string_encoding_t encoding;

	*argv = of_malloc(count + 2, sizeof(char *));


	encoding = [OFLocale encoding];

	(*argv)[0] = (char *)[programName cStringWithEncoding: encoding];

	for (i = 0; i < count; i++)
		(*argv)[i + 1] =
		    (char *)[objects[i] cStringWithEncoding: encoding];

	(*argv)[i + 1] = NULL;
}

- (char **)of_environmentForDictionary: (OFDictionary *)environment
{

	char **envp;
	size_t count;
	of_string_encoding_t encoding;

	if (environment == nil)
		return NULL;

	encoding = [OFLocale encoding];

	count = environment.count;
	envp = of_calloc(count + 1, sizeof(char *));


	@try {
		OFEnumerator *keyEnumerator = [environment keyEnumerator];
		OFEnumerator *objectEnumerator = [environment objectEnumerator];

		for (size_t i = 0; i < count; i++) {
			OFString *key;
			OFString *object;
			size_t keyLen, objectLen;

			key = [keyEnumerator nextObject];
			object = [objectEnumerator nextObject];

			keyLen = [key cStringLengthWithEncoding: encoding];
			objectLen = [object
			    cStringLengthWithEncoding: encoding];

			envp[i] = of_malloc(keyLen + objectLen + 2, 1);

			memcpy(envp[i],
			    [key cStringWithEncoding: encoding], keyLen);
			envp[i][keyLen] = '=';
			memcpy(envp[i] + keyLen + 1,
			    [object cStringWithEncoding: encoding], objectLen);
			envp[i][keyLen + objectLen + 1] = '\0';
		}
	} @catch (id e) {
		for (size_t i = 0; i < count; i++)
			free(envp[i]);

		free(envp);

		@throw e;
	}

	return envp;
}

- (bool)lowlevelIsAtEndOfStream
{
	if (_readPipe[0] == -1)