/*

	Copyright(C) 2017, Red Hat, Inc.

	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 <getopt.h>

#include <stdlib.h>

#include <unistd.h>

#include "objects.h"

#include "utils.h"

struct {

	bool debug;

	bool hide_kabi;

	bool hide_kabi_new;

	FILE *file;

} show_config = {false, false, false, NULL};

static void show_usage()

{

	printf("Usage:\n"

	       "\tshow [options] kabi_file...\n"

	       "\nOptions:\n"

	       "    -h, --help:\t\tshow this message\n"

	       "    -k, --hide-kabi:\thide changes made by RH_KABI_REPLACE()\n"

	       "    -n, --hide-kabi-new:\n\t\t\thide the kabi trickery made by"

	       " RH_KABI_REPLACE, but show the new field\n"

	       "    -d, --debug:\tprint the raw tree\n"

	       "    --no-offset:\tdon't display the offset of struct fields\n");

	exit(1);

}

/*

 * Performs the show command

 */

int show(int argc, char **argv)

{

	obj_t *root;

	int opt, opt_index, ret = 0;

	struct option loptions[] = {

		{"debug", no_argument, 0, 'd'},

		{"hide-kabi", no_argument, 0, 'k'},

		{"hide-kabi-new", no_argument, 0, 'n'},

		{"help", no_argument, 0, 'h'},

		{"no-offset", no_argument, &display_options.no_offset, 1},

		{0, 0, 0, 0}

	};

	memset(&display_options, 0, sizeof(display_options));

	while ((opt = getopt_long(argc, argv, "dknh",

				  loptions, &opt_index)) != -1) {

		switch (opt) {

		case 0:

			break;

		case 'd':

			show_config.debug = true;

			break;

		case 'n':

			show_config.hide_kabi_new = true;

			/* fall through */

		case 'k':

			show_config.hide_kabi = true;

			break;

		case 'h':

		default:

			show_usage();

		}

	}

	if (optind >= argc)

		show_usage();

	while (optind < argc) {

		char *fn = argv[optind++];

		show_config.file = safe_fopen(fn);

		root = obj_parse(show_config.file, fn);

		if (show_config.hide_kabi)

			obj_hide_kabi(root, show_config.hide_kabi_new);

		if (show_config.debug)

			obj_debug_tree(root);

		obj_print_tree(root);

		if (optind < argc)

			putchar('\n');

		obj_free(root);

		fclose(show_config.file);

	}

	return ret;

}