term.c 37.1 KB
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/*	$NetBSD: term.c,v 1.40 2004/05/22 23:21:28 christos Exp $	*/
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/*-
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Christos Zoulas of Cornell University.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

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#include <config.h>
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/*
 * term.c: Editor/termcap-curses interface
 *	   We have to declare a static variable here, since the
 *	   termcap putchar routine does not take an argument!
 */
#include <stdio.h>
#include <signal.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
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#ifdef HAVE_CURSES_H
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# include <curses.h>
#elif HAVE_NCURSES_H
# include <ncurses.h>
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#endif

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/* Solaris's term.h does horrid things. */
#if (defined(HAVE_TERM_H) && !defined(_SUNOS))
# include <term.h>
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#endif
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#include <sys/types.h>
#include <sys/ioctl.h>

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#include "el.h"

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/*
 * IMPORTANT NOTE: these routines are allowed to look at the current screen
 * and the current possition assuming that it is correct.  If this is not
 * true, then the update will be WRONG!  This is (should be) a valid
 * assumption...
 */

#define	TC_BUFSIZE	2048

#define	GoodStr(a)	(el->el_term.t_str[a] != NULL && \
			    el->el_term.t_str[a][0] != '\0')
#define	Str(a)		el->el_term.t_str[a]
#define	Val(a)		el->el_term.t_val[a]

#ifdef notdef
private const struct {
	const char *b_name;
	int b_rate;
} baud_rate[] = {
#ifdef B0
	{ "0", B0 },
#endif
#ifdef B50
	{ "50", B50 },
#endif
#ifdef B75
	{ "75", B75 },
#endif
#ifdef B110
	{ "110", B110 },
#endif
#ifdef B134
	{ "134", B134 },
#endif
#ifdef B150
	{ "150", B150 },
#endif
#ifdef B200
	{ "200", B200 },
#endif
#ifdef B300
	{ "300", B300 },
#endif
#ifdef B600
	{ "600", B600 },
#endif
#ifdef B900
	{ "900", B900 },
#endif
#ifdef B1200
	{ "1200", B1200 },
#endif
#ifdef B1800
	{ "1800", B1800 },
#endif
#ifdef B2400
	{ "2400", B2400 },
#endif
#ifdef B3600
	{ "3600", B3600 },
#endif
#ifdef B4800
	{ "4800", B4800 },
#endif
#ifdef B7200
	{ "7200", B7200 },
#endif
#ifdef B9600
	{ "9600", B9600 },
#endif
#ifdef EXTA
	{ "19200", EXTA },
#endif
#ifdef B19200
	{ "19200", B19200 },
#endif
#ifdef EXTB
	{ "38400", EXTB },
#endif
#ifdef B38400
	{ "38400", B38400 },
#endif
	{ NULL, 0 }
};
#endif

private const struct termcapstr {
	const char *name;
	const char *long_name;
} tstr[] = {
#define	T_al	0
	{ "al", "add new blank line" },
#define	T_bl	1
	{ "bl", "audible bell" },
#define	T_cd	2
	{ "cd", "clear to bottom" },
#define	T_ce	3
	{ "ce", "clear to end of line" },
#define	T_ch	4
	{ "ch", "cursor to horiz pos" },
#define	T_cl	5
	{ "cl", "clear screen" },
#define	T_dc	6
	{ "dc", "delete a character" },
#define	T_dl	7
	{ "dl", "delete a line" },
#define	T_dm	8
	{ "dm", "start delete mode" },
#define	T_ed	9
	{ "ed", "end delete mode" },
#define	T_ei	10
	{ "ei", "end insert mode" },
#define	T_fs	11
	{ "fs", "cursor from status line" },
#define	T_ho	12
	{ "ho", "home cursor" },
#define	T_ic	13
	{ "ic", "insert character" },
#define	T_im	14
	{ "im", "start insert mode" },
#define	T_ip	15
	{ "ip", "insert padding" },
#define	T_kd	16
	{ "kd", "sends cursor down" },
#define	T_kl	17
	{ "kl", "sends cursor left" },
#define	T_kr	18
	{ "kr", "sends cursor right" },
#define	T_ku	19
	{ "ku", "sends cursor up" },
#define	T_md	20
	{ "md", "begin bold" },
#define	T_me	21
	{ "me", "end attributes" },
#define	T_nd	22
	{ "nd", "non destructive space" },
#define	T_se	23
	{ "se", "end standout" },
#define	T_so	24
	{ "so", "begin standout" },
#define	T_ts	25
	{ "ts", "cursor to status line" },
#define	T_up	26
	{ "up", "cursor up one" },
#define	T_us	27
	{ "us", "begin underline" },
#define	T_ue	28
	{ "ue", "end underline" },
#define	T_vb	29
	{ "vb", "visible bell" },
#define	T_DC	30
	{ "DC", "delete multiple chars" },
#define	T_DO	31
	{ "DO", "cursor down multiple" },
#define	T_IC	32
	{ "IC", "insert multiple chars" },
#define	T_LE	33
	{ "LE", "cursor left multiple" },
#define	T_RI	34
	{ "RI", "cursor right multiple" },
#define	T_UP	35
	{ "UP", "cursor up multiple" },
#define	T_kh	36
	{ "kh", "send cursor home" },
#define	T_at7	37
	{ "@7", "send cursor end" },
#define	T_str	38
	{ NULL, NULL }
};

private const struct termcapval {
	const char *name;
	const char *long_name;
} tval[] = {
#define	T_am	0
	{ "am", "has automatic margins" },
#define	T_pt	1
	{ "pt", "has physical tabs" },
#define	T_li	2
	{ "li", "Number of lines" },
#define	T_co	3
	{ "co", "Number of columns" },
#define	T_km	4
	{ "km", "Has meta key" },
#define	T_xt	5
	{ "xt", "Tab chars destructive" },
#define	T_xn	6
	{ "xn", "newline ignored at right margin" },
#define	T_MT	7
	{ "MT", "Has meta key" },			/* XXX? */
#define	T_val	8
	{ NULL, NULL, }
};
/* do two or more of the attributes use me */

private void	term_setflags(EditLine *);
private int	term_rebuffer_display(EditLine *);
private void	term_free_display(EditLine *);
private int	term_alloc_display(EditLine *);
private void	term_alloc(EditLine *, const struct termcapstr *, const char *);
private void	term_init_arrow(EditLine *);
private void	term_reset_arrow(EditLine *);


private FILE *term_outfile = NULL;	/* XXX: How do we fix that? */


/* term_setflags():
 *	Set the terminal capability flags
 */
private void
term_setflags(EditLine *el)
{
	EL_FLAGS = 0;
	if (el->el_tty.t_tabs)
		EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0;

	EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0;
	EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0;
	EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0;
	EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ?
	    TERM_CAN_INSERT : 0;
	EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0;
	EL_FLAGS |= Val(T_am) ? TERM_HAS_AUTO_MARGINS : 0;
	EL_FLAGS |= Val(T_xn) ? TERM_HAS_MAGIC_MARGINS : 0;

	if (GoodStr(T_me) && GoodStr(T_ue))
		EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ?
		    TERM_CAN_ME : 0;
	else
		EL_FLAGS &= ~TERM_CAN_ME;
	if (GoodStr(T_me) && GoodStr(T_se))
		EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ?
		    TERM_CAN_ME : 0;


#ifdef DEBUG_SCREEN
	if (!EL_CAN_UP) {
		(void) fprintf(el->el_errfile,
		    "WARNING: Your terminal cannot move up.\n");
		(void) fprintf(el->el_errfile,
		    "Editing may be odd for long lines.\n");
	}
	if (!EL_CAN_CEOL)
		(void) fprintf(el->el_errfile, "no clear EOL capability.\n");
	if (!EL_CAN_DELETE)
		(void) fprintf(el->el_errfile, "no delete char capability.\n");
	if (!EL_CAN_INSERT)
		(void) fprintf(el->el_errfile, "no insert char capability.\n");
#endif /* DEBUG_SCREEN */
}


/* term_init():
 *	Initialize the terminal stuff
 */
protected int
term_init(EditLine *el)
{

	el->el_term.t_buf = (char *) el_malloc(TC_BUFSIZE);
	if (el->el_term.t_buf == NULL)
		return (-1);
	el->el_term.t_cap = (char *) el_malloc(TC_BUFSIZE);
	if (el->el_term.t_cap == NULL)
		return (-1);
	el->el_term.t_fkey = (fkey_t *) el_malloc(A_K_NKEYS * sizeof(fkey_t));
	if (el->el_term.t_fkey == NULL)
		return (-1);
	el->el_term.t_loc = 0;
	el->el_term.t_str = (char **) el_malloc(T_str * sizeof(char *));
	if (el->el_term.t_str == NULL)
		return (-1);
	(void) memset(el->el_term.t_str, 0, T_str * sizeof(char *));
	el->el_term.t_val = (int *) el_malloc(T_val * sizeof(int));
	if (el->el_term.t_val == NULL)
		return (-1);
	(void) memset(el->el_term.t_val, 0, T_val * sizeof(int));
	term_outfile = el->el_outfile;
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	(void) term_set(el, NULL);
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	term_init_arrow(el);
	return (0);
}
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/* term_end():
 *	Clean up the terminal stuff
 */
protected void
term_end(EditLine *el)
{

	el_free((ptr_t) el->el_term.t_buf);
	el->el_term.t_buf = NULL;
	el_free((ptr_t) el->el_term.t_cap);
	el->el_term.t_cap = NULL;
	el->el_term.t_loc = 0;
	el_free((ptr_t) el->el_term.t_str);
	el->el_term.t_str = NULL;
	el_free((ptr_t) el->el_term.t_val);
	el->el_term.t_val = NULL;
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	el_free((ptr_t) el->el_term.t_fkey);
	el->el_term.t_fkey = NULL;
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	term_free_display(el);
}


/* term_alloc():
 *	Maintain a string pool for termcap strings
 */
private void
term_alloc(EditLine *el, const struct termcapstr *t, const char *cap)
{
	char termbuf[TC_BUFSIZE];
	int tlen, clen;
	char **tlist = el->el_term.t_str;
	char **tmp, **str = &tlist[t - tstr];

	if (cap == NULL || *cap == '\0') {
		*str = NULL;
		return;
	} else
		clen = strlen(cap);

	tlen = *str == NULL ? 0 : strlen(*str);

	/*
         * New string is shorter; no need to allocate space
         */
	if (clen <= tlen) {
		(void) strcpy(*str, cap);	/* XXX strcpy is safe */
		return;
	}
	/*
         * New string is longer; see if we have enough space to append
         */
	if (el->el_term.t_loc + 3 < TC_BUFSIZE) {
						/* XXX strcpy is safe */
		(void) strcpy(*str = &el->el_term.t_buf[el->el_term.t_loc],
		    cap);
		el->el_term.t_loc += clen + 1;	/* one for \0 */
		return;
	}
	/*
         * Compact our buffer; no need to check compaction, cause we know it
         * fits...
         */
	tlen = 0;
	for (tmp = tlist; tmp < &tlist[T_str]; tmp++)
		if (*tmp != NULL && *tmp != '\0' && *tmp != *str) {
			char *ptr;

			for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++)
				continue;
			termbuf[tlen++] = '\0';
		}
	memcpy(el->el_term.t_buf, termbuf, TC_BUFSIZE);
	el->el_term.t_loc = tlen;
	if (el->el_term.t_loc + 3 >= TC_BUFSIZE) {
		(void) fprintf(el->el_errfile,
		    "Out of termcap string space.\n");
		return;
	}
					/* XXX strcpy is safe */
	(void) strcpy(*str = &el->el_term.t_buf[el->el_term.t_loc], cap);
	el->el_term.t_loc += clen + 1;	/* one for \0 */
	return;
}


/* term_rebuffer_display():
 *	Rebuffer the display after the screen changed size
 */
private int
term_rebuffer_display(EditLine *el)
{
	coord_t *c = &el->el_term.t_size;

	term_free_display(el);

	c->h = Val(T_co);
	c->v = Val(T_li);

	if (term_alloc_display(el) == -1)
		return (-1);
	return (0);
}


/* term_alloc_display():
 *	Allocate a new display.
 */
private int
term_alloc_display(EditLine *el)
{
	int i;
	char **b;
	coord_t *c = &el->el_term.t_size;

	b = (char **) el_malloc((size_t) (sizeof(char *) * (c->v + 1)));
	if (b == NULL)
		return (-1);
	for (i = 0; i < c->v; i++) {
		b[i] = (char *) el_malloc((size_t) (sizeof(char) * (c->h + 1)));
		if (b[i] == NULL)
			return (-1);
	}
	b[c->v] = NULL;
	el->el_display = b;

	b = (char **) el_malloc((size_t) (sizeof(char *) * (c->v + 1)));
	if (b == NULL)
		return (-1);
	for (i = 0; i < c->v; i++) {
		b[i] = (char *) el_malloc((size_t) (sizeof(char) * (c->h + 1)));
		if (b[i] == NULL)
			return (-1);
	}
	b[c->v] = NULL;
	el->el_vdisplay = b;
	return (0);
}


/* term_free_display():
 *	Free the display buffers
 */
private void
term_free_display(EditLine *el)
{
	char **b;
	char **bufp;

	b = el->el_display;
	el->el_display = NULL;
	if (b != NULL) {
		for (bufp = b; *bufp != NULL; bufp++)
			el_free((ptr_t) * bufp);
		el_free((ptr_t) b);
	}
	b = el->el_vdisplay;
	el->el_vdisplay = NULL;
	if (b != NULL) {
		for (bufp = b; *bufp != NULL; bufp++)
			el_free((ptr_t) * bufp);
		el_free((ptr_t) b);
	}
}


/* term_move_to_line():
 *	move to line <where> (first line == 0)
 * 	as efficiently as possible
 */
protected void
term_move_to_line(EditLine *el, int where)
{
	int del;

	if (where == el->el_cursor.v)
		return;

	if (where > el->el_term.t_size.v) {
#ifdef DEBUG_SCREEN
		(void) fprintf(el->el_errfile,
		    "term_move_to_line: where is ridiculous: %d\r\n", where);
#endif /* DEBUG_SCREEN */
		return;
	}
	if ((del = where - el->el_cursor.v) > 0) {
		while (del > 0) {
			if (EL_HAS_AUTO_MARGINS &&
			    el->el_display[el->el_cursor.v][0] != '\0') {
				/* move without newline */
				term_move_to_char(el, el->el_term.t_size.h - 1);
				term_overwrite(el,
				    &el->el_display[el->el_cursor.v][el->el_cursor.h],
				    1);
				/* updates Cursor */
				del--;
			} else {
				if ((del > 1) && GoodStr(T_DO)) {
					(void) tputs(tgoto(Str(T_DO), del, del),
					    del, term__putc);
					del = 0;
				} else {
					for (; del > 0; del--)
						term__putc('\n');
					/* because the \n will become \r\n */
					el->el_cursor.h = 0;
				}
			}
		}
	} else {		/* del < 0 */
		if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up)))
			(void) tputs(tgoto(Str(T_UP), -del, -del), -del,
			    term__putc);
		else {
			if (GoodStr(T_up))
				for (; del < 0; del++)
					(void) tputs(Str(T_up), 1, term__putc);
		}
	}
	el->el_cursor.v = where;/* now where is here */
}


/* term_move_to_char():
 *	Move to the character position specified
 */
protected void
term_move_to_char(EditLine *el, int where)
{
	int del, i;

mc_again:
	if (where == el->el_cursor.h)
		return;

	if (where > el->el_term.t_size.h) {
#ifdef DEBUG_SCREEN
		(void) fprintf(el->el_errfile,
		    "term_move_to_char: where is riduculous: %d\r\n", where);
#endif /* DEBUG_SCREEN */
		return;
	}
	if (!where) {		/* if where is first column */
		term__putc('\r');	/* do a CR */
		el->el_cursor.h = 0;
		return;
	}
	del = where - el->el_cursor.h;

	if ((del < -4 || del > 4) && GoodStr(T_ch))
		/* go there directly */
		(void) tputs(tgoto(Str(T_ch), where, where), where, term__putc);
	else {
		if (del > 0) {	/* moving forward */
			if ((del > 4) && GoodStr(T_RI))
				(void) tputs(tgoto(Str(T_RI), del, del),
				    del, term__putc);
			else {
					/* if I can do tabs, use them */
				if (EL_CAN_TAB) {
					if ((el->el_cursor.h & 0370) !=
					    (where & 0370)) {
						/* if not within tab stop */
						for (i =
						    (el->el_cursor.h & 0370);
						    i < (where & 0370);
						    i += 8)
							term__putc('\t');	
							/* then tab over */
						el->el_cursor.h = where & 0370;
					}
				}
				/*
				 * it's usually cheaper to just write the
				 * chars, so we do.
				 */
				/*
				 * NOTE THAT term_overwrite() WILL CHANGE
				 * el->el_cursor.h!!!
				 */
				term_overwrite(el,
				    &el->el_display[el->el_cursor.v][el->el_cursor.h],
				    where - el->el_cursor.h);

			}
		} else {	/* del < 0 := moving backward */
			if ((-del > 4) && GoodStr(T_LE))
				(void) tputs(tgoto(Str(T_LE), -del, -del),
				    -del, term__putc);
			else {	/* can't go directly there */
				/*
				 * if the "cost" is greater than the "cost"
				 * from col 0
				 */
				if (EL_CAN_TAB ?
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				    ((unsigned int)-del >
				    (((unsigned int) where >> 3) +
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				     (where & 07)))
				    : (-del > where)) {
					term__putc('\r');	/* do a CR */
					el->el_cursor.h = 0;
					goto mc_again;	/* and try again */
				}
				for (i = 0; i < -del; i++)
					term__putc('\b');
			}
		}
	}
	el->el_cursor.h = where;		/* now where is here */
}


/* term_overwrite():
 *	Overstrike num characters
 */
protected void
term_overwrite(EditLine *el, const char *cp, int n)
{
	if (n <= 0)
		return;		/* catch bugs */

	if (n > el->el_term.t_size.h) {
#ifdef DEBUG_SCREEN
		(void) fprintf(el->el_errfile,
		    "term_overwrite: n is riduculous: %d\r\n", n);
#endif /* DEBUG_SCREEN */
		return;
	}
	do {
		term__putc(*cp++);
		el->el_cursor.h++;
	} while (--n);

	if (el->el_cursor.h >= el->el_term.t_size.h) {	/* wrap? */
		if (EL_HAS_AUTO_MARGINS) {	/* yes */
			el->el_cursor.h = 0;
			el->el_cursor.v++;
			if (EL_HAS_MAGIC_MARGINS) {
				/* force the wrap to avoid the "magic"
				 * situation */
				char c;
				if ((c = el->el_display[el->el_cursor.v][el->el_cursor.h])
				    != '\0')
					term_overwrite(el, &c, 1);
				else
					term__putc(' ');
				el->el_cursor.h = 1;
			}
		} else		/* no wrap, but cursor stays on screen */
			el->el_cursor.h = el->el_term.t_size.h;
	}
}


/* term_deletechars():
 *	Delete num characters
 */
protected void
term_deletechars(EditLine *el, int num)
{
	if (num <= 0)
		return;

	if (!EL_CAN_DELETE) {
#ifdef DEBUG_EDIT
		(void) fprintf(el->el_errfile, "   ERROR: cannot delete   \n");
#endif /* DEBUG_EDIT */
		return;
	}
	if (num > el->el_term.t_size.h) {
#ifdef DEBUG_SCREEN
		(void) fprintf(el->el_errfile,
		    "term_deletechars: num is riduculous: %d\r\n", num);
#endif /* DEBUG_SCREEN */
		return;
	}
	if (GoodStr(T_DC))	/* if I have multiple delete */
		if ((num > 1) || !GoodStr(T_dc)) {	/* if dc would be more
							 * expen. */
			(void) tputs(tgoto(Str(T_DC), num, num),
			    num, term__putc);
			return;
		}
	if (GoodStr(T_dm))	/* if I have delete mode */
		(void) tputs(Str(T_dm), 1, term__putc);

	if (GoodStr(T_dc))	/* else do one at a time */
		while (num--)
			(void) tputs(Str(T_dc), 1, term__putc);

	if (GoodStr(T_ed))	/* if I have delete mode */
		(void) tputs(Str(T_ed), 1, term__putc);
}


/* term_insertwrite():
 *	Puts terminal in insert character mode or inserts num
 *	characters in the line
 */
protected void
term_insertwrite(EditLine *el, char *cp, int num)
{
	if (num <= 0)
		return;
	if (!EL_CAN_INSERT) {
#ifdef DEBUG_EDIT
		(void) fprintf(el->el_errfile, "   ERROR: cannot insert   \n");
#endif /* DEBUG_EDIT */
		return;
	}
	if (num > el->el_term.t_size.h) {
#ifdef DEBUG_SCREEN
		(void) fprintf(el->el_errfile,
		    "StartInsert: num is riduculous: %d\r\n", num);
#endif /* DEBUG_SCREEN */
		return;
	}
	if (GoodStr(T_IC))	/* if I have multiple insert */
		if ((num > 1) || !GoodStr(T_ic)) {
				/* if ic would be more expensive */
			(void) tputs(tgoto(Str(T_IC), num, num),
			    num, term__putc);
			term_overwrite(el, cp, num);
				/* this updates el_cursor.h */
			return;
		}
	if (GoodStr(T_im) && GoodStr(T_ei)) {	/* if I have insert mode */
		(void) tputs(Str(T_im), 1, term__putc);

		el->el_cursor.h += num;
		do
			term__putc(*cp++);
		while (--num);

		if (GoodStr(T_ip))	/* have to make num chars insert */
			(void) tputs(Str(T_ip), 1, term__putc);

		(void) tputs(Str(T_ei), 1, term__putc);
		return;
	}
	do {
		if (GoodStr(T_ic))	/* have to make num chars insert */
			(void) tputs(Str(T_ic), 1, term__putc);
					/* insert a char */

		term__putc(*cp++);

		el->el_cursor.h++;

		if (GoodStr(T_ip))	/* have to make num chars insert */
			(void) tputs(Str(T_ip), 1, term__putc);
					/* pad the inserted char */

	} while (--num);
}


/* term_clear_EOL():
 *	clear to end of line.  There are num characters to clear
 */
protected void
term_clear_EOL(EditLine *el, int num)
{
	int i;

	if (EL_CAN_CEOL && GoodStr(T_ce))
		(void) tputs(Str(T_ce), 1, term__putc);
	else {
		for (i = 0; i < num; i++)
			term__putc(' ');
		el->el_cursor.h += num;	/* have written num spaces */
	}
}


/* term_clear_screen():
 *	Clear the screen
 */
protected void
term_clear_screen(EditLine *el)
{				/* clear the whole screen and home */

	if (GoodStr(T_cl))
		/* send the clear screen code */
		(void) tputs(Str(T_cl), Val(T_li), term__putc);
	else if (GoodStr(T_ho) && GoodStr(T_cd)) {
		(void) tputs(Str(T_ho), Val(T_li), term__putc);	/* home */
		/* clear to bottom of screen */
		(void) tputs(Str(T_cd), Val(T_li), term__putc);
	} else {
		term__putc('\r');
		term__putc('\n');
	}
}


/* term_beep():
 *	Beep the way the terminal wants us
 */
protected void
term_beep(EditLine *el)
{
	if (GoodStr(T_bl))
		/* what termcap says we should use */
		(void) tputs(Str(T_bl), 1, term__putc);
	else
		term__putc('\007');	/* an ASCII bell; ^G */
}


#ifdef notdef
/* term_clear_to_bottom():
 *	Clear to the bottom of the screen
 */
protected void
term_clear_to_bottom(EditLine *el)
{
	if (GoodStr(T_cd))
		(void) tputs(Str(T_cd), Val(T_li), term__putc);
	else if (GoodStr(T_ce))
		(void) tputs(Str(T_ce), Val(T_li), term__putc);
}
#endif

871 872 873 874 875 876
protected void
term_get(EditLine *el, const char **term)
{
	*term = el->el_term.t_name;
}

877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908

/* term_set():
 *	Read in the terminal capabilities from the requested terminal
 */
protected int
term_set(EditLine *el, const char *term)
{
	int i;
	char buf[TC_BUFSIZE];
	char *area;
	const struct termcapstr *t;
	sigset_t oset, nset;
	int lins, cols;

	(void) sigemptyset(&nset);
	(void) sigaddset(&nset, SIGWINCH);
	(void) sigprocmask(SIG_BLOCK, &nset, &oset);

	area = buf;


	if (term == NULL)
		term = getenv("TERM");

	if (!term || !term[0])
		term = "dumb";

	if (strcmp(term, "emacs") == 0)
		el->el_flags |= EDIT_DISABLED;

	memset(el->el_term.t_cap, 0, TC_BUFSIZE);

909
	i = tgetent(el->el_term.t_cap, term);
910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937

	if (i <= 0) {
		if (i == -1)
			(void) fprintf(el->el_errfile,
			    "Cannot read termcap database;\n");
		else if (i == 0)
			(void) fprintf(el->el_errfile,
			    "No entry for terminal type \"%s\";\n", term);
		(void) fprintf(el->el_errfile,
		    "using dumb terminal settings.\n");
		Val(T_co) = 80;	/* do a dumb terminal */
		Val(T_pt) = Val(T_km) = Val(T_li) = 0;
		Val(T_xt) = Val(T_MT);
		for (t = tstr; t->name != NULL; t++)
			term_alloc(el, t, NULL);
	} else {
		/* auto/magic margins */
		Val(T_am) = tgetflag("am");
		Val(T_xn) = tgetflag("xn");
		/* Can we tab */
		Val(T_pt) = tgetflag("pt");
		Val(T_xt) = tgetflag("xt");
		/* do we have a meta? */
		Val(T_km) = tgetflag("km");
		Val(T_MT) = tgetflag("MT");
		/* Get the size */
		Val(T_co) = tgetnum("co");
		Val(T_li) = tgetnum("li");
938 939 940 941 942
		for (t = tstr; t->name != NULL; t++) {
			/* XXX: some systems tgetstr needs non const */
			term_alloc(el, t, tgetstr(strchr(t->name, *t->name),
			    &area));
		}
943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960
	}

	if (Val(T_co) < 2)
		Val(T_co) = 80;	/* just in case */
	if (Val(T_li) < 1)
		Val(T_li) = 24;

	el->el_term.t_size.v = Val(T_co);
	el->el_term.t_size.h = Val(T_li);

	term_setflags(el);

				/* get the correct window size */
	(void) term_get_size(el, &lins, &cols);
	if (term_change_size(el, lins, cols) == -1)
		return (-1);
	(void) sigprocmask(SIG_SETMASK, &oset, NULL);
	term_bind_arrow(el);
961
	el->el_term.t_name = term;
962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082
	return (i <= 0 ? -1 : 0);
}


/* term_get_size():
 *	Return the new window size in lines and cols, and
 *	true if the size was changed.
 */
protected int
term_get_size(EditLine *el, int *lins, int *cols)
{

	*cols = Val(T_co);
	*lins = Val(T_li);

#ifdef TIOCGWINSZ
	{
		struct winsize ws;
		if (ioctl(el->el_infd, TIOCGWINSZ, (ioctl_t) & ws) != -1) {
			if (ws.ws_col)
				*cols = ws.ws_col;
			if (ws.ws_row)
				*lins = ws.ws_row;
		}
	}
#endif
#ifdef TIOCGSIZE
	{
		struct ttysize ts;
		if (ioctl(el->el_infd, TIOCGSIZE, (ioctl_t) & ts) != -1) {
			if (ts.ts_cols)
				*cols = ts.ts_cols;
			if (ts.ts_lines)
				*lins = ts.ts_lines;
		}
	}
#endif
	return (Val(T_co) != *cols || Val(T_li) != *lins);
}


/* 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'};

1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094
	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);
1095 1096

	if (el->el_map.type == MAP_VI) {
1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108
		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);
1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161
	}
}


/* 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)
1162
				key_kprint(el, arrow[i].name, &arrow[i].fun,
1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202
				    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)
1203
				key_clear(el, map, p);
1204 1205 1206
			else {
				if (p[1] && (dmap[j] == map[j] ||
					map[j] == ED_SEQUENCE_LEAD_IN)) {
1207
					key_add(el, p, &arrow[i].fun,
1208 1209 1210
					    arrow[i].type);
					map[j] = ED_SEQUENCE_LEAD_IN;
				} else if (map[j] == ED_UNASSIGNED) {
1211
					key_clear(el, map, p);
1212 1213 1214
					if (arrow[i].type == XK_CMD)
						map[j] = arrow[i].fun.cmd;
					else
1215 1216
						key_add(el, p, &arrow[i].fun,
						    arrow[i].type);
1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250
				}
			}
		}
	}
}


/* 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*/
1251 1252
term_telltc(EditLine *el, int argc __attribute__((__unused__)), 
    const char **argv __attribute__((__unused__)))
1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275
{
	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 ?
1276
		    key__decode_str(*ts, upbuf, "") : "(empty)");
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	(void) fputc('\n', el->el_outfile);
	return (0);
}


/* term_settc():
 *	Change the current terminal characteristics
 */
protected int
/*ARGSUSED*/
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term_settc(EditLine *el, int argc __attribute__((__unused__)),
    const char **argv)
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{
	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*/
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term_echotc(EditLine *el, int argc __attribute__((__unused__)),
    const char **argv)
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{
	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
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		(void) fprintf(el->el_outfile, fmtd, (int)el->el_tty.t_speed);
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#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;
		}
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	if (t->name == NULL) {
		/* XXX: some systems tgetstr needs non const */
		scap = tgetstr(strchr(*argv, **argv), &area);
	}
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	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);
}