term.c

/* term_change_size():
 *	Change the size of the terminal
 */
protected int
term_change_size(EditLine *el, int lins, int cols)
{
	/*
         * Just in case
         */
	Val(T_co) = (cols < 2) ? 80 : cols;
	Val(T_li) = (lins < 1) ? 24 : lins;

	/* re-make display buffers */
	if (term_rebuffer_display(el) == -1)
		return (-1);
	re_clear_display(el);
	return (0);
}


/* term_init_arrow():
 *	Initialize the arrow key bindings from termcap
 */
private void
term_init_arrow(EditLine *el)
{
	fkey_t *arrow = el->el_term.t_fkey;

	arrow[A_K_DN].name = "down";
	arrow[A_K_DN].key = T_kd;
	arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY;
	arrow[A_K_DN].type = XK_CMD;

	arrow[A_K_UP].name = "up";
	arrow[A_K_UP].key = T_ku;
	arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY;
	arrow[A_K_UP].type = XK_CMD;

	arrow[A_K_LT].name = "left";
	arrow[A_K_LT].key = T_kl;
	arrow[A_K_LT].fun.cmd = ED_PREV_CHAR;
	arrow[A_K_LT].type = XK_CMD;

	arrow[A_K_RT].name = "right";
	arrow[A_K_RT].key = T_kr;
	arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR;
	arrow[A_K_RT].type = XK_CMD;

	arrow[A_K_HO].name = "home";
	arrow[A_K_HO].key = T_kh;
	arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG;
	arrow[A_K_HO].type = XK_CMD;

	arrow[A_K_EN].name = "end";
	arrow[A_K_EN].key = T_at7;
	arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END;
	arrow[A_K_EN].type = XK_CMD;
}


/* term_reset_arrow():
 *	Reset arrow key bindings
 */
private void
term_reset_arrow(EditLine *el)
{
	fkey_t *arrow = el->el_term.t_fkey;
	static const char strA[] = {033, '[', 'A', '\0'};
	static const char strB[] = {033, '[', 'B', '\0'};
	static const char strC[] = {033, '[', 'C', '\0'};
	static const char strD[] = {033, '[', 'D', '\0'};
	static const char strH[] = {033, '[', 'H', '\0'};
	static const char strF[] = {033, '[', 'F', '\0'};
	static const char stOA[] = {033, 'O', 'A', '\0'};
	static const char stOB[] = {033, 'O', 'B', '\0'};
	static const char stOC[] = {033, 'O', 'C', '\0'};
	static const char stOD[] = {033, 'O', 'D', '\0'};
	static const char stOH[] = {033, 'O', 'H', '\0'};
	static const char stOF[] = {033, 'O', 'F', '\0'};

	key_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
	key_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
	key_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
	key_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
	key_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
	key_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
	key_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
	key_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
	key_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
	key_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
	key_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
	key_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type);

	if (el->el_map.type == MAP_VI) {
		key_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
		key_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
		key_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
		key_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
		key_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
		key_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
		key_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
		key_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
		key_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
		key_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
		key_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
		key_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
	}
}


/* term_set_arrow():
 *	Set an arrow key binding
 */
protected int
term_set_arrow(EditLine *el, const char *name, key_value_t *fun, int type)
{
	fkey_t *arrow = el->el_term.t_fkey;
	int i;

	for (i = 0; i < A_K_NKEYS; i++)
		if (strcmp(name, arrow[i].name) == 0) {
			arrow[i].fun = *fun;
			arrow[i].type = type;
			return (0);
		}
	return (-1);
}


/* term_clear_arrow():
 *	Clear an arrow key binding
 */
protected int
term_clear_arrow(EditLine *el, const char *name)
{
	fkey_t *arrow = el->el_term.t_fkey;
	int i;

	for (i = 0; i < A_K_NKEYS; i++)
		if (strcmp(name, arrow[i].name) == 0) {
			arrow[i].type = XK_NOD;
			return (0);
		}
	return (-1);
}


/* term_print_arrow():
 *	Print the arrow key bindings
 */
protected void
term_print_arrow(EditLine *el, const char *name)
{
	int i;
	fkey_t *arrow = el->el_term.t_fkey;

	for (i = 0; i < A_K_NKEYS; i++)
		if (*name == '\0' || strcmp(name, arrow[i].name) == 0)
			if (arrow[i].type != XK_NOD)
				key_kprint(el, arrow[i].name, &arrow[i].fun,
				    arrow[i].type);
}


/* term_bind_arrow():
 *	Bind the arrow keys
 */
protected void
term_bind_arrow(EditLine *el)
{
	el_action_t *map;
	const el_action_t *dmap;
	int i, j;
	char *p;
	fkey_t *arrow = el->el_term.t_fkey;

	/* Check if the components needed are initialized */
	if (el->el_term.t_buf == NULL || el->el_map.key == NULL)
		return;

	map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key;
	dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs;

	term_reset_arrow(el);

	for (i = 0; i < A_K_NKEYS; i++) {
		p = el->el_term.t_str[arrow[i].key];
		if (p && *p) {
			j = (unsigned char) *p;
			/*
		         * Assign the arrow keys only if:
		         *
		         * 1. They are multi-character arrow keys and the user
		         *    has not re-assigned the leading character, or
		         *    has re-assigned the leading character to be
		         *	  ED_SEQUENCE_LEAD_IN
		         * 2. They are single arrow keys pointing to an
			 *    unassigned key.
		         */
			if (arrow[i].type == XK_NOD)
				key_clear(el, map, p);
			else {
				if (p[1] && (dmap[j] == map[j] ||
					map[j] == ED_SEQUENCE_LEAD_IN)) {
					key_add(el, p, &arrow[i].fun,
					    arrow[i].type);
					map[j] = ED_SEQUENCE_LEAD_IN;
				} else if (map[j] == ED_UNASSIGNED) {
					key_clear(el, map, p);
					if (arrow[i].type == XK_CMD)
						map[j] = arrow[i].fun.cmd;
					else
						key_add(el, p, &arrow[i].fun,
						    arrow[i].type);
				}
			}
		}
	}
}


/* term__putc():
 *	Add a character
 */
protected int
term__putc(int c)
{

	return (fputc(c, term_outfile));
}


/* term__flush():
 *	Flush output
 */
protected void
term__flush(void)
{

	(void) fflush(term_outfile);
}


/* term_telltc():
 *	Print the current termcap characteristics
 */
protected int
/*ARGSUSED*/
term_telltc(EditLine *el, int argc, const char **argv)
{
	const struct termcapstr *t;
	char **ts;
	char upbuf[EL_BUFSIZ];

	(void) fprintf(el->el_outfile, "\n\tYour terminal has the\n");
	(void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n");
	(void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n",
	    Val(T_co), Val(T_li));
	(void) fprintf(el->el_outfile,
	    "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no");
	(void) fprintf(el->el_outfile,
	    "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not ");
	(void) fprintf(el->el_outfile, "\tIt %s automatic margins\n",
	    EL_HAS_AUTO_MARGINS ? "has" : "does not have");
	if (EL_HAS_AUTO_MARGINS)
		(void) fprintf(el->el_outfile, "\tIt %s magic margins\n",
		    EL_HAS_MAGIC_MARGINS ? "has" : "does not have");

	for (t = tstr, ts = el->el_term.t_str; t->name != NULL; t++, ts++)
		(void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n",
		    t->long_name,
		    t->name, *ts && **ts ?
		    key__decode_str(*ts, upbuf, "") : "(empty)");
	(void) fputc('\n', el->el_outfile);
	return (0);
}


/* term_settc():
 *	Change the current terminal characteristics
 */
protected int
/*ARGSUSED*/
term_settc(EditLine *el, int argc, const char **argv)
{
	const struct termcapstr *ts;
	const struct termcapval *tv;
	const char *what, *how;

	if (argv == NULL || argv[1] == NULL || argv[2] == NULL)
		return (-1);

	what = argv[1];
	how = argv[2];

	/*
         * Do the strings first
         */
	for (ts = tstr; ts->name != NULL; ts++)
		if (strcmp(ts->name, what) == 0)
			break;

	if (ts->name != NULL) {
		term_alloc(el, ts, how);
		term_setflags(el);
		return (0);
	}
	/*
         * Do the numeric ones second
         */
	for (tv = tval; tv->name != NULL; tv++)
		if (strcmp(tv->name, what) == 0)
			break;

	if (tv->name != NULL) {
		if (tv == &tval[T_pt] || tv == &tval[T_km] ||
		    tv == &tval[T_am] || tv == &tval[T_xn]) {
			if (strcmp(how, "yes") == 0)
				el->el_term.t_val[tv - tval] = 1;
			else if (strcmp(how, "no") == 0)
				el->el_term.t_val[tv - tval] = 0;
			else {
				(void) fprintf(el->el_errfile,
				    "settc: Bad value `%s'.\n", how);
				return (-1);
			}
			term_setflags(el);
			if (term_change_size(el, Val(T_li), Val(T_co)) == -1)
				return (-1);
			return (0);
		} else {
			long i;
			char *ep;

			i = strtol(how, &ep, 10);
			if (*ep != '\0') {
				(void) fprintf(el->el_errfile,
				    "settc: Bad value `%s'.\n", how);
				return (-1);
			}
			el->el_term.t_val[tv - tval] = (int) i;
			el->el_term.t_size.v = Val(T_co);
			el->el_term.t_size.h = Val(T_li);
			if (tv == &tval[T_co] || tv == &tval[T_li])
				if (term_change_size(el, Val(T_li), Val(T_co))
				    == -1)
					return (-1);
			return (0);
		}
	}
	return (-1);
}


/* term_echotc():
 *	Print the termcap string out with variable substitution
 */
protected int
/*ARGSUSED*/
term_echotc(EditLine *el, int argc, const char **argv)
{
	char *cap, *scap, *ep;
	int arg_need, arg_cols, arg_rows;
	int verbose = 0, silent = 0;
	char *area;
	static const char fmts[] = "%s\n", fmtd[] = "%d\n";
	const struct termcapstr *t;
	char buf[TC_BUFSIZE];
	long i;

	area = buf;

	if (argv == NULL || argv[1] == NULL)
		return (-1);
	argv++;

	if (argv[0][0] == '-') {
		switch (argv[0][1]) {
		case 'v':
			verbose = 1;
			break;
		case 's':
			silent = 1;
			break;
		default:
			/* stderror(ERR_NAME | ERR_TCUSAGE); */
			break;
		}
		argv++;
	}
	if (!*argv || *argv[0] == '\0')
		return (0);
	if (strcmp(*argv, "tabs") == 0) {
		(void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no");
		return (0);
	} else if (strcmp(*argv, "meta") == 0) {
		(void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no");
		return (0);
	} else if (strcmp(*argv, "xn") == 0) {
		(void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ?
		    "yes" : "no");
		return (0);
	} else if (strcmp(*argv, "am") == 0) {
		(void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ?
		    "yes" : "no");
		return (0);
	} else if (strcmp(*argv, "baud") == 0) {
#ifdef notdef
		int i;

		for (i = 0; baud_rate[i].b_name != NULL; i++)
			if (el->el_tty.t_speed == baud_rate[i].b_rate) {
				(void) fprintf(el->el_outfile, fmts,
				    baud_rate[i].b_name);
				return (0);
			}
		(void) fprintf(el->el_outfile, fmtd, 0);
#else
		(void) fprintf(el->el_outfile, fmtd, (int) el->el_tty.t_speed);
#endif
		return (0);
	} else if (strcmp(*argv, "rows") == 0 || strcmp(*argv, "lines") == 0) {
		(void) fprintf(el->el_outfile, fmtd, Val(T_li));
		return (0);
	} else if (strcmp(*argv, "cols") == 0) {
		(void) fprintf(el->el_outfile, fmtd, Val(T_co));
		return (0);
	}
	/*
         * Try to use our local definition first
         */
	scap = NULL;
	for (t = tstr; t->name != NULL; t++)
		if (strcmp(t->name, *argv) == 0) {
			scap = el->el_term.t_str[t - tstr];
			break;
		}
	if (t->name == NULL)
		scap = tgetstr((char *)argv, &area);
	if (!scap || scap[0] == '\0') {
		if (!silent)
			(void) fprintf(el->el_errfile,
			    "echotc: Termcap parameter `%s' not found.\n",
			    *argv);
		return (-1);
	}
	/*
         * Count home many values we need for this capability.
         */
	for (cap = scap, arg_need = 0; *cap; cap++)
		if (*cap == '%')
			switch (*++cap) {
			case 'd':
			case '2':
			case '3':
			case '.':
			case '+':
				arg_need++;
				break;
			case '%':
			case '>':
			case 'i':
			case 'r':
			case 'n':
			case 'B':
			case 'D':
				break;
			default:
				/*
				 * hpux has lot's of them...
				 */
				if (verbose)
					(void) fprintf(el->el_errfile,
				"echotc: Warning: unknown termcap %% `%c'.\n",
					    *cap);
				/* This is bad, but I won't complain */
				break;
			}

	switch (arg_need) {
	case 0:
		argv++;
		if (*argv && *argv[0]) {
			if (!silent)
				(void) fprintf(el->el_errfile,
				    "echotc: Warning: Extra argument `%s'.\n",
				    *argv);
			return (-1);
		}
		(void) tputs(scap, 1, term__putc);
		break;
	case 1:
		argv++;
		if (!*argv || *argv[0] == '\0') {
			if (!silent)
				(void) fprintf(el->el_errfile,
				    "echotc: Warning: Missing argument.\n");
			return (-1);
		}
		arg_cols = 0;
		i = strtol(*argv, &ep, 10);
		if (*ep != '\0' || i < 0) {
			if (!silent)
				(void) fprintf(el->el_errfile,
				    "echotc: Bad value `%s' for rows.\n",
				    *argv);
			return (-1);
		}
		arg_rows = (int) i;
		argv++;
		if (*argv && *argv[0]) {
			if (!silent)
				(void) fprintf(el->el_errfile,
				    "echotc: Warning: Extra argument `%s'.\n",
				    *argv);
			return (-1);
		}
		(void) tputs(tgoto(scap, arg_cols, arg_rows), 1, term__putc);
		break;
	default:
		/* This is wrong, but I will ignore it... */
		if (verbose)
			(void) fprintf(el->el_errfile,
			 "echotc: Warning: Too many required arguments (%d).\n",
			    arg_need);
		/* FALLTHROUGH */
	case 2:
		argv++;
		if (!*argv || *argv[0] == '\0') {
			if (!silent)
				(void) fprintf(el->el_errfile,
				    "echotc: Warning: Missing argument.\n");
			return (-1);
		}
		i = strtol(*argv, &ep, 10);
		if (*ep != '\0' || i < 0) {
			if (!silent)
				(void) fprintf(el->el_errfile,
				    "echotc: Bad value `%s' for cols.\n",
				    *argv);
			return (-1);
		}
		arg_cols = (int) i;
		argv++;
		if (!*argv || *argv[0] == '\0') {
			if (!silent)
				(void) fprintf(el->el_errfile,
				    "echotc: Warning: Missing argument.\n");
			return (-1);
		}
		i = strtol(*argv, &ep, 10);
		if (*ep != '\0' || i < 0) {
			if (!silent)
				(void) fprintf(el->el_errfile,
				    "echotc: Bad value `%s' for rows.\n",
				    *argv);
			return (-1);
		}
		arg_rows = (int) i;
		if (*ep != '\0') {
			if (!silent)
				(void) fprintf(el->el_errfile,
				    "echotc: Bad value `%s'.\n", *argv);
			return (-1);
		}
		argv++;
		if (*argv && *argv[0]) {
			if (!silent)
				(void) fprintf(el->el_errfile,
				    "echotc: Warning: Extra argument `%s'.\n",
				    *argv);
			return (-1);
		}
		(void) tputs(tgoto(scap, arg_cols, arg_rows), arg_rows,
		    term__putc);
		break;
	}
	return (0);
}