/*
** Copyright (C) 1991, 1997 Free Software Foundation, Inc.
**
** This file is part of TACK.
**
** TACK 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 2, or (at your option)
** any later version.
**
** TACK 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 TACK; see the file COPYING.  If not, write to
** the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
** Boston, MA 02110-1301, USA
*/
/* initialization and wrapup code */

#include <tack.h>
#include <tic.h>

MODULE_ID("$Id: init.c,v 1.11 2009/12/26 21:38:00 tom Exp $")

#if NCURSES_VERSION_MAJOR >= 5 || NCURSES_VERSION_PATCH >= 981219
#define _nc_get_curterm(p) _nc_get_tty_mode(p)
#endif

FILE *debug_fp;
char temp[1024];
char tty_basename[MAX_ALIAS * 2];

void
put_name(const char *cap, const char *name)
{				/* send the cap name followed by the cap */
	if (cap) {
		ptext(name);
		tc_putp(cap);
	}
}

static void
report_cap(const char *tag, const char *s)
{				/* expand the cap or print *** missing *** */
	int i;

	ptext(tag);
	for (i = char_count; i < 13; i++) {
		putchp(' ');
	}
	put_str(" = ");
	if (s) {
		putln(expand(s));
	} else {
		putln("*** missing ***");
	}
}


void
reset_init(void)
{				/* send the reset and init strings */
	int i;

	ptext("Terminal reset");
	i = char_count;
	put_name(reset_1string, " (rs1)");
	put_name(reset_2string, " (rs2)");
	/* run the reset file */
	if (reset_file && reset_file[0]) {
		FILE *fp;
		int ch;

		can_test("rf", FLAG_TESTED);
		if ((fp = fopen(reset_file, "r"))) {	/* send the reset file */
			sprintf(temp, " (rf) %s", reset_file);
			ptextln(temp);
			while (1) {
				ch = getc(fp);
				if (ch == EOF)
					break;
				put_this(ch);
			}
			fclose(fp);
		} else {
			sprintf(temp, "\nCannot open reset file (rf) %s", reset_file);
			ptextln(temp);
		}
	}
	put_name(reset_3string, " (rs3)");
	if (i != char_count) {
		put_crlf();
	}
	ptext(" init");
	put_name(init_1string, " (is1)");
	put_name(init_2string, " (is2)");
	if (set_tab && clear_all_tabs && init_tabs != 8) {
		put_crlf();
		tc_putp(clear_all_tabs);
		for (char_count = 0; char_count < columns; char_count++) {
			put_this(' ');
			if ((char_count & 7) == 7) {
				tc_putp(set_tab);
			}
		}
		put_cr();
	}
	/* run the initialization file */
	if (init_file && init_file[0]) {
		FILE *fp;
		int ch;

		can_test("if", FLAG_TESTED);
		if ((fp = fopen(init_file, "r"))) {	/* send the init file */
			sprintf(temp, " (if) %s", init_file);
			ptextln(temp);
			while (1) {
				ch = getc(fp);
				if (ch == EOF)
					break;
				put_this(ch);
			}
			fclose(fp);
		} else {
			sprintf(temp, "\nCannot open init file (if) %s", init_file);
			ptextln(temp);
		}
	}
	if (init_prog) {
		can_test("iprog", FLAG_TESTED);
		(void) system(init_prog);
	}
	put_name(init_3string, " (is3)");

	fflush(stdout);
}

/*
**	display_basic()
**
**	display the basic terminal definitions
*/
void
display_basic(void)
{
	put_str("Name: ");
	putln(ttytype);

	report_cap("\\r ^M (cr)", carriage_return);
	report_cap("\\n ^J (ind)", scroll_forward);
	report_cap("\\b ^H (cub1)", cursor_left);
	report_cap("\\t ^I (ht)", tab);
/*      report_cap("\\f ^L (ff)", form_feed);	*/
	if (newline) {
		/* OK if missing */
		report_cap("      (nel)", newline);
	}
	report_cap("      (clear)", clear_screen);
	if (!cursor_home && cursor_address) {
		report_cap("(cup) (home)", TPARM_2(cursor_address, 0, 0));
	} else {
		report_cap("      (home)", cursor_home);
	}
#ifdef user9
	report_cap("ENQ   (u9)", user9);
#endif
#ifdef user8
	report_cap("ACK   (u8)", user8);
#endif

	sprintf(temp, "\nTerminal size: %d x %d.  Baud rate: %u.  Frame size: %d.%d",
		columns, lines,
		tty_baud_rate,
		tty_frame_size >> 1,
		(tty_frame_size & 1) * 5);
	putln(temp);
}

/*
**	curses_setup(exec_name)
**
**	Startup ncurses
*/
void
curses_setup(
	char *exec_name)
{
	int status;
	TERMTYPE term;
	char tty_filename[2048];

	tty_init();

	/*
	 * See if the terminal is in the terminfo data base.  This call has two
	 * useful benefits, 1) it returns the filename of the terminfo entry,
	 * and 2) it searches only terminfo's.  This allows us to abort before
	 * ncurses starts scanning the termcap file.
	 */
	if ((status = _nc_read_entry(tty_basename, tty_filename, &term)) == 0) {
		const TERMTYPE *fallback = _nc_fallback(tty_basename);

		if (fallback) {
		    term = *fallback;
		    sprintf(tty_filename, "(fallback)%s", tty_basename);
		    status = 1;
		} else {
		    fprintf(stderr, "Terminal not found: TERM=%s\n", tty_basename);
		    show_usage(exec_name);
		    ExitProgram(EXIT_FAILURE);
		}
	}
	if (status == -1) {
		fprintf(stderr, "Terminfo database is inaccessible\n");
		ExitProgram(EXIT_FAILURE);
	}
#if NO_LEAKS
	_nc_free_termtype(&term);
#endif

	/**
	 * This call will load the terminfo data base and set the cur-term
	 * variable.  Only terminals that actually exist will get here so its
	 * OK to ignore errors.  This is a good thing since ncurses does not
	 * permit (os) or (gn) to be set.
	 */
	setupterm(tty_basename, 1, &status);

	/**
	 * Get the current terminal definitions.  This must be done before
	 * getting the baudrate.
	 */
	_nc_get_curterm(&cur_term->Nttyb);
	if (baudrate() > 0)
	    tty_baud_rate = (unsigned) baudrate();
	else
	    tty_baud_rate = 1;
	tty_cps = (tty_baud_rate << 1) / tty_frame_size;

	/* set up the defaults */
	replace_mode = TRUE;
	scan_mode = 0;
	char_count = 0;
	select_delay_type = debug_level = 0;
	char_mask = (meta_on && meta_on[0] == '\0') ? ALLOW_PARITY : STRIP_PARITY;
	/* Don't change the XON/XOFF modes yet. */
	select_xon_xoff = initial_stty_query(TTY_XON_XOFF) ? 1 : needs_xon_xoff;

	fflush(stdout);	/* flush any output */
	tty_set();

	go_home();	/* set can_go_home */
	put_clear();	/* set can_clear_screen */

	if (send_reset_init) {
		reset_init();
	}

	/*
	 * I assume that the reset and init strings may not have the correct
	 * pads.  (Because that part of the test comes much later.)  Because
	 * of this, I allow the terminal some time to catch up.
	 */
	fflush(stdout);	/* waste some time */
	sleep(1);	/* waste more time */
	charset_can_test();
	can_test("lines cols cr nxon rf if iprog rmp smcup rmcup", FLAG_CAN_TEST);
	edit_init();			/* initialize the edit data base */

	if (send_reset_init && enter_ca_mode) {
		tc_putp(enter_ca_mode);
		put_clear();	/* just in case we switched pages */
	}
	put_crlf();
	ptext("Using terminfo from: ");
	ptextln(tty_filename);
	put_crlf();

	if (tty_can_sync == SYNC_NEEDED) {
		verify_time();
	}

	display_basic();
}

/*
**	bye_kids(exit-condition)
**
**	Shutdown the terminal, clear the signals, and exit
*/
void
bye_kids(int n)
{				/* reset the tty and exit */
	ignoresig();
	if (send_reset_init) {
		if (exit_ca_mode) {
			tc_putp(exit_ca_mode);
		}
		if (initial_stty_query(TTY_XON_XOFF)) {
			if (enter_xon_mode) {
				tc_putp(enter_xon_mode);
			}
		} else if (exit_xon_mode) {
			tc_putp(exit_xon_mode);
		}
	}
	if (debug_fp) {
		fclose(debug_fp);
	}
	if (log_fp) {
		fclose(log_fp);
	}
	tty_reset();
	fclose(stdin);
	fclose(stdout);
	fclose(stderr);
	if (not_a_tty)
		sleep(1);
	ExitProgram(n);
}