C++ (Cpp) watch_file_inotify Examples

Example #1

File: tailf.c Project: AnunkunramA/util-linux

int main(int argc, char **argv)
{
	const char *filename;
	long lines;
	int ch;
	struct stat st;
	off_t size = 0;

	static const struct option longopts[] = {
		{ "lines",   required_argument, 0, 'n' },
		{ "version", no_argument,	0, 'V' },
		{ "help",    no_argument,	0, 'h' },
		{ NULL,      0, 0, 0 }
	};

	setlocale(LC_ALL, "");
	bindtextdomain(PACKAGE, LOCALEDIR);
	textdomain(PACKAGE);
	atexit(close_stdout);

	lines = old_style_option(&argc, argv);
	if (lines < 0)
		lines = DEFAULT_LINES;

	while ((ch = getopt_long(argc, argv, "n:N:Vh", longopts, NULL)) != -1)
		switch((char)ch) {
		case 'n':
		case 'N':
			lines = strtol_or_err(optarg,
					_("failed to parse number of lines"));
			break;
		case 'V':
			printf(_("%s from %s\n"), program_invocation_short_name,
						  PACKAGE_STRING);
			exit(EXIT_SUCCESS);
		case 'h':
			usage(stdout);
		default:
			usage(stderr);
		}

	if (argc == optind)
		errx(EXIT_FAILURE, _("no input file specified"));

	filename = argv[optind];

	if (stat(filename, &st) != 0)
		err(EXIT_FAILURE, _("stat failed %s"), filename);

	size = st.st_size;;
	tailf(filename, lines);

#ifdef HAVE_INOTIFY_INIT
	if (!watch_file_inotify(filename, &size))
#endif
		watch_file(filename, &size);

	return EXIT_SUCCESS;
}

Example #2

File: tailf.c Project: Distrotech/util-linux

int main(int argc, char **argv)
{
	const char *filename;
	size_t lines;
	int ch;
	struct stat st;

	static const struct option longopts[] = {
		{ "lines",   required_argument, 0, 'n' },
		{ "version", no_argument,	0, 'V' },
		{ "help",    no_argument,	0, 'h' },
		{ NULL,      0, 0, 0 }
	};

	setlocale(LC_ALL, "");
	bindtextdomain(PACKAGE, LOCALEDIR);
	textdomain(PACKAGE);
	atexit(close_stdout);

	if (!old_style_option(&argc, argv, &lines))
		lines = DEFAULT_LINES;

	while ((ch = getopt_long(argc, argv, "n:N:Vh", longopts, NULL)) != -1)
		switch ((char)ch) {
		case 'n':
		case 'N':
			lines = strtoul_or_err(optarg,
					_("failed to parse number of lines"));
			break;
		case 'V':
			printf(UTIL_LINUX_VERSION);
			exit(EXIT_SUCCESS);
		case 'h':
			usage(stdout);
		default:
			usage(stderr);
		}

	if (argc == optind)
		errx(EXIT_FAILURE, _("no input file specified"));

	filename = argv[optind];

	if (stat(filename, &st) != 0)
		err(EXIT_FAILURE, _("stat of %s failed"), filename);
	if (!S_ISREG(st.st_mode))
		errx(EXIT_FAILURE, _("%s: is not a file"), filename);
	if (st.st_size)
		tailf(filename, lines, &st);

#ifdef HAVE_INOTIFY_INIT
	if (!watch_file_inotify(filename, &st))
#endif
		watch_file(filename, &st);

	return EXIT_SUCCESS;
}