liblouis/tools/lou_checktable.c

/* liblouis Braille Translation and Back-Translation Library

   Based on BRLTTY, copyright (C) 1999-2006 by
   The BRLTTY Team

   Copyright (C) 2004, 2005, 2006, 2009
   ViewPlus Technologies, Inc. www.viewplus.com and
   JJB Software, Inc. www.jjb-software.com

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <config.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "internal.h"
#include <getopt.h>
#include "progname.h"
#include "version-etc.h"

static const struct option longopts[] = {
	{ "help", no_argument, NULL, 'h' }, { "version", no_argument, NULL, 'v' },
	{ "quiet", no_argument, NULL, 'q' }, { NULL, 0, NULL, 0 },
};

const char version_etc_copyright[] =
		"Copyright %s %d ViewPlus Technologies, Inc. and JJB Software, Inc.";

#define AUTHORS "John J. Boyer"

static int quiet_flag = 0;

static void
print_help(void) {
	printf("\
Usage: %s [OPTIONS] TABLE[,TABLE,...]\n",
			program_name);

	fputs("\
Test a Braille translation table. If the table contains errors,\n\
appropriate messages are displayed. If there are no errors the\n\
message \"no errors found.\" is shown unless you specify the --quiet\n\
option.\n",
			stdout);

	fputs("\
  -h, --help          display this help and exit\n\
  -v, --version       display version information and exit\n\
  -q, --quiet         do not write to standard error if there are no errors.\n",
			stdout);

	printf("\n");
	printf("Report bugs to %s.\n", PACKAGE_BUGREPORT);

#ifdef PACKAGE_PACKAGER_BUG_REPORTS
	printf("Report %s bugs to: %s\n", PACKAGE_PACKAGER, PACKAGE_PACKAGER_BUG_REPORTS);
#endif
#ifdef PACKAGE_URL
	printf("%s home page: <%s>\n", PACKAGE_NAME, PACKAGE_URL);
#endif
}

int
main(int argc, char **argv) {
	const TranslationTableHeader *table;
	int optc;

	set_program_name(argv[0]);

	while ((optc = getopt_long(argc, argv, "hvq", longopts, NULL)) != -1) switch (optc) {
		/* --help and --version exit immediately, per GNU coding standards. */
		case 'v':
			version_etc(
					stdout, program_name, PACKAGE_NAME, VERSION, AUTHORS, (char *)NULL);
			exit(EXIT_SUCCESS);
			break;
		case 'h':
			print_help();
			exit(EXIT_SUCCESS);
			break;
		case 'q':
			quiet_flag = 1;
			break;
		default:
			fprintf(stderr, "Try `%s --help' for more information.\n", program_name);
			exit(EXIT_FAILURE);
			break;
		}

	if (optind != argc - 1) {
		/* Print error message and exit. */
		if (optind < argc - 1)
			fprintf(stderr, "%s: extra operand: %s\n", program_name, argv[optind + 1]);
		else
			fprintf(stderr, "%s: no table specified\n", program_name);
		fprintf(stderr, "Try `%s --help' for more information.\n", program_name);
		exit(EXIT_FAILURE);
	}

	if (!(table = lou_getTable(argv[optind]))) {
		lou_free();
		exit(EXIT_FAILURE);
	}
	if (quiet_flag == 0) fprintf(stderr, "No errors found.\n");
	lou_free();
	exit(EXIT_SUCCESS);
}