/*
 * This module contains the main() function for fc-shell.
 */

#include <sys/types.h>
#include <sys/errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "exitcodes.h"

extern char *socket_pathname;
extern char *rvinterf_ttyport, *rvinterf_Bopt, *rvinterf_lopt, *rvinterf_wopt;
extern int sock;

int ttyhacks, dflag;
int oneshot_mode, oneshot_nowait;

main(argc, argv)
	char **argv;
{
	extern int optind;
	extern char *optarg;
	int c, sopt = 0;
	fd_set fds;

	while ((c = getopt(argc, argv, "B:dl:np:s:w:")) != EOF)
		switch (c) {
		case 'B':
			rvinterf_Bopt = optarg;
			continue;
		case 'd':
			dflag++;
			continue;
		case 'l':
			rvinterf_lopt = optarg;
			continue;
		case 'n':
			oneshot_nowait++;
			continue;
		case 'p':
			rvinterf_ttyport = optarg;
			continue;
		case 's':
			socket_pathname = optarg;
			sopt++;
			continue;
		case 'w':
			rvinterf_wopt = optarg;
			continue;
		case '?':
		default:
			/* error msg already printed */
			exit(ERROR_USAGE);
		}
	if (rvinterf_ttyport) {
		if (sopt) {
			fprintf(stderr,
			"%s error: -p and -s options are mutually exclusive\n",
				argv[0]);
			exit(ERROR_USAGE);
		}
		launch_rvinterf(0);
	} else {
		if (rvinterf_Bopt || rvinterf_lopt || rvinterf_wopt) {
			fprintf(stderr,
"%s error: -B, -l and -w options are meaningful only when launching rvinterf\n",
				argv[0]);
			exit(ERROR_USAGE);
		}
		connect_local_socket();
	}

	if (argv[optind]) {
		oneshot_mode = 1;
		return oneshot_command(argc - optind, argv + optind);
	}

	ttyhacks = isatty(0) && !dflag;
	init();
	tty_init();
	for (;;) {
		FD_ZERO(&fds);
		FD_SET(0, &fds);
		FD_SET(sock, &fds);
		c = select(sock+1, &fds, 0, 0, 0);
		if (c < 0) {
			if (errno == EINTR)
				continue;
			tty_cleanup();
			perror("select");
			exit(ERROR_UNIX);
		}
		if (FD_ISSET(0, &fds))
			handle_tty_input();
		if (FD_ISSET(sock, &fds))
			handle_rvinterf_input();
		fflush(stdout);
	}
}