terminal.c revision 63948 
1/*-
2 * Copyright (c) 1992, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Christos Zoulas of Cornell University.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * $FreeBSD: head/lib/libedit/term.c 63948 2000-07-28 00:42:54Z ache $
37 */
38
39#if !defined(lint) && !defined(SCCSID)
40static char sccsid[] = "@(#)term.c	8.2 (Berkeley) 4/30/95";
41#endif /* not lint && not SCCSID */
42
43/*
44 * term.c: Editor/termcap-curses interface
45 *	   We have to declare a static variable here, since the
46 *	   termcap putchar routine does not take an argument!
47 */
48#include "sys.h"
49#include <stdio.h>
50#include <signal.h>
51#include <string.h>
52#include <stdlib.h>
53#include <unistd.h>
54#include <termcap.h>
55#include <sys/types.h>
56#include <sys/ioctl.h>
57
58#include "el.h"
59
60/*
61 * IMPORTANT NOTE: these routines are allowed to look at the current screen
62 * and the current possition assuming that it is correct.  If this is not
63 * true, then the update will be WRONG!  This is (should be) a valid
64 * assumption...
65 */
66
67#define TC_BUFSIZE 2048
68
69#define GoodStr(a) (el->el_term.t_str[a] != NULL && \
70		    el->el_term.t_str[a][0] != '\0')
71#define Str(a) el->el_term.t_str[a]
72#define Val(a) el->el_term.t_val[a]
73
74private struct termcapstr {
75    char   *name;
76    char   *long_name;
77} tstr[] = {
78
79#define T_al	0
80    {	"al",	"add new blank line"		},
81#define T_bl	1
82    {	"bl",	"audible bell"			},
83#define T_cd	2
84    {	"cd",	"clear to bottom"		},
85#define T_ce	3
86    {	"ce",	"clear to end of line"		},
87#define T_ch	4
88    {	"ch",	"cursor to horiz pos"		},
89#define T_cl	5
90    {	"cl",	"clear screen"			},
91#define	T_dc	6
92    {	"dc",	"delete a character"		},
93#define	T_dl	7
94    {	"dl",	"delete a line"		 	},
95#define	T_dm	8
96    {	"dm",	"start delete mode"		},
97#define	T_ed	9
98    {	"ed",	"end delete mode"		},
99#define	T_ei	10
100    {	"ei",	"end insert mode"		},
101#define	T_fs	11
102    {	"fs",	"cursor from status line"	},
103#define	T_ho	12
104    {	"ho",	"home cursor"			},
105#define	T_ic	13
106    {	"ic",	"insert character"		},
107#define	T_im	14
108    {	"im",	"start insert mode"		},
109#define	T_ip	15
110    {	"ip",	"insert padding"		},
111#define	T_kd	16
112    {	"kd",	"sends cursor down"		},
113#define	T_kl	17
114    {	"kl",	"sends cursor left"		},
115#define T_kr	18
116    {	"kr",	"sends cursor right"		},
117#define T_ku	19
118    {	"ku",	"sends cursor up"		},
119#define T_md	20
120    {	"md",	"begin bold"			},
121#define T_me	21
122    {	"me",	"end attributes"		},
123#define T_nd	22
124    {	"nd",	"non destructive space"	 	},
125#define T_se	23
126    {	"se",	"end standout"			},
127#define T_so	24
128    {	"so",	"begin standout"		},
129#define T_ts	25
130    {	"ts",	"cursor to status line"	 	},
131#define T_up	26
132    {	"up",	"cursor up one"		 	},
133#define T_us	27
134    {	"us",	"begin underline"		},
135#define T_ue	28
136    {	"ue",	"end underline"		 	},
137#define T_vb	29
138    {	"vb",	"visible bell"			},
139#define T_DC	30
140    {	"DC",	"delete multiple chars"	 	},
141#define T_DO	31
142    {	"DO",	"cursor down multiple"		},
143#define T_IC	32
144    {	"IC",	"insert multiple chars"	 	},
145#define T_LE	33
146    {	"LE",	"cursor left multiple"		},
147#define T_RI	34
148    {	"RI",	"cursor right multiple"	 	},
149#define T_UP	35
150    {	"UP",	"cursor up multiple"		},
151#define T_kh	36
152    {	"kh",	"sends cursor home"		},
153#define T_at7	37
154    {	"@7",	"sends cursor end"		},
155#define T_str	38
156    {	NULL,   NULL			 	}
157};
158
159private struct termcapval {
160    char   *name;
161    char   *long_name;
162} tval[] = {
163#define T_pt	0
164    {	"pt",	"has physical tabs"	},
165#define T_li	1
166    {	"li",	"Number of lines"	},
167#define T_co	2
168    {	"co",	"Number of columns"	},
169#define T_km	3
170    {	"km",	"Has meta key"		},
171#define T_xt	4
172    {	"xt",	"Tab chars destructive" },
173#define T_MT	5
174    {	"MT",	"Has meta key"		},	/* XXX? */
175#define T_val	6
176    {	NULL, 	NULL,			}
177};
178
179/* do two or more of the attributes use me */
180
181private	void	term_rebuffer_display	__P((EditLine *));
182private	void	term_free_display	__P((EditLine *));
183private	void	term_alloc_display	__P((EditLine *));
184private	void	term_alloc		__P((EditLine *,
185					     struct termcapstr *, char *));
186private void	term_init_arrow		__P((EditLine *));
187private void	term_reset_arrow	__P((EditLine *));
188
189
190private FILE *term_outfile = NULL;	/* XXX: How do we fix that? */
191
192
193/* term_setflags():
194 *	Set the terminal capability flags
195 */
196private void
197term_setflags(el)
198    EditLine *el;
199{
200    EL_FLAGS = 0;
201    if (el->el_tty.t_tabs)
202	EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0;
203
204    EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0;
205    EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0;
206    EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0;
207    EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ?
208		 TERM_CAN_INSERT : 0;
209    EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP))  ? TERM_CAN_UP : 0;
210
211    if (GoodStr(T_me) && GoodStr(T_ue))
212	EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ? TERM_CAN_ME : 0;
213    else
214	EL_FLAGS &= ~TERM_CAN_ME;
215    if (GoodStr(T_me) && GoodStr(T_se))
216	EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ? TERM_CAN_ME : 0;
217
218
219#ifdef DEBUG_SCREEN
220    if (!EL_CAN_UP) {
221	(void) fprintf(el->el_errfile, "WARNING: Your terminal cannot move up.\n");
222	(void) fprintf(el->el_errfile, "Editing may be odd for long lines.\n");
223    }
224    if (!EL_CAN_CEOL)
225	(void) fprintf(el->el_errfile, "no clear EOL capability.\n");
226    if (!EL_CAN_DELETE)
227	(void) fprintf(el->el_errfile, "no delete char capability.\n");
228    if (!EL_CAN_INSERT)
229	(void) fprintf(el->el_errfile, "no insert char capability.\n");
230#endif /* DEBUG_SCREEN */
231}
232
233
234/* term_init():
235 *	Initialize the terminal stuff
236 */
237protected int
238term_init(el)
239    EditLine *el;
240{
241    el->el_term.t_buf = (char *)  el_malloc(TC_BUFSIZE);
242    el->el_term.t_cap = (char *)  el_malloc(TC_BUFSIZE);
243    el->el_term.t_fkey = (fkey_t *) el_malloc(A_K_NKEYS * sizeof(fkey_t));
244    (void) memset(el->el_term.t_fkey, 0, A_K_NKEYS * sizeof(fkey_t));
245    el->el_term.t_loc = 0;
246    el->el_term.t_str = (char **) el_malloc(T_str * sizeof(char*));
247    (void) memset(el->el_term.t_str, 0, T_str * sizeof(char*));
248    el->el_term.t_val = (int *)   el_malloc(T_val * sizeof(int));
249    (void) memset(el->el_term.t_val, 0, T_val * sizeof(int));
250    term_outfile = el->el_outfile;
251    (void) term_set(el, NULL);
252    term_init_arrow(el);
253    return 0;
254}
255
256/* term_end():
257 *	Clean up the terminal stuff
258 */
259protected void
260term_end(el)
261    EditLine *el;
262{
263    el_free((ptr_t) el->el_term.t_buf);
264    el->el_term.t_buf = NULL;
265    el_free((ptr_t) el->el_term.t_cap);
266    el->el_term.t_cap = NULL;
267    el->el_term.t_loc = 0;
268    el_free((ptr_t) el->el_term.t_str);
269    el->el_term.t_str = NULL;
270    el_free((ptr_t) el->el_term.t_val);
271    el->el_term.t_val = NULL;
272    term_free_display(el);
273}
274
275
276/* term_alloc():
277 *	Maintain a string pool for termcap strings
278 */
279private void
280term_alloc(el, t, cap)
281    EditLine *el;
282    struct termcapstr *t;
283    char   *cap;
284{
285    char    termbuf[TC_BUFSIZE];
286    int     tlen, clen;
287    char    **tlist = el->el_term.t_str;
288    char    **tmp, **str = &tlist[t - tstr];
289
290    if (cap == NULL || *cap == '\0') {
291	*str = NULL;
292	return;
293    }
294    else
295	clen = strlen(cap);
296
297    tlen  = *str == NULL ? 0 : strlen(*str);
298
299    /*
300     * New string is shorter; no need to allocate space
301     */
302    if (clen <= tlen) {
303	(void)strcpy(*str, cap);	/* XXX strcpy is safe */
304	return;
305    }
306
307    /*
308     * New string is longer; see if we have enough space to append
309     */
310    if (el->el_term.t_loc + 3 < TC_BUFSIZE) {
311	/* XXX strcpy is safe */
312	(void)strcpy(*str = &el->el_term.t_buf[el->el_term.t_loc], cap);
313	el->el_term.t_loc += clen + 1;	/* one for \0 */
314	return;
315    }
316
317    /*
318     * Compact our buffer; no need to check compaction, cause we know it
319     * fits...
320     */
321    tlen = 0;
322    for (tmp = tlist; tmp < &tlist[T_str]; tmp++)
323	if (*tmp != NULL && *tmp != '\0' && *tmp != *str) {
324	    char   *ptr;
325
326	    for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++)
327		continue;
328	    termbuf[tlen++] = '\0';
329	}
330    memcpy(el->el_term.t_buf, termbuf, TC_BUFSIZE);
331    el->el_term.t_loc = tlen;
332    if (el->el_term.t_loc + 3 >= TC_BUFSIZE) {
333	(void) fprintf(el->el_errfile, "Out of termcap string space.\n");
334	return;
335    }
336    /* XXX strcpy is safe */
337    (void)strcpy(*str = &el->el_term.t_buf[el->el_term.t_loc], cap);
338    el->el_term.t_loc += clen + 1;		/* one for \0 */
339    return;
340} /* end term_alloc */
341
342
343/* term_rebuffer_display():
344 *	Rebuffer the display after the screen changed size
345 */
346private void
347term_rebuffer_display(el)
348    EditLine *el;
349{
350    coord_t *c = &el->el_term.t_size;
351
352    term_free_display(el);
353
354    /* make this public, -1 to avoid wraps */
355    c->h = Val(T_co) - 1;
356    c->v = (EL_BUFSIZ * 4) / c->h + 1;
357
358    term_alloc_display(el);
359} /* end term_rebuffer_display */
360
361
362/* term_alloc_display():
363 *	Allocate a new display.
364 */
365private void
366term_alloc_display(el)
367    EditLine *el;
368{
369    int i;
370    char  **b;
371    coord_t *c = &el->el_term.t_size;
372
373    b = (char **) el_malloc((size_t) (sizeof(char *) * (c->v + 1)));
374    for (i = 0; i < c->v; i++)
375	b[i] = (char *) el_malloc((size_t) (sizeof(char) * (c->h + 1)));
376    b[c->v] = NULL;
377    el->el_display = b;
378
379    b = (char **) el_malloc((size_t) (sizeof(char *) * (c->v + 1)));
380    for (i = 0; i < c->v; i++)
381	b[i] = (char *) el_malloc((size_t) (sizeof(char) * (c->h + 1)));
382    b[c->v] = NULL;
383    el->el_vdisplay = b;
384
385} /* end term_alloc_display */
386
387
388/* term_free_display():
389 *	Free the display buffers
390 */
391private void
392term_free_display(el)
393    EditLine *el;
394{
395    char  **b;
396    char  **bufp;
397
398    b = el->el_display;
399    el->el_display = NULL;
400    if (b != NULL) {
401	for (bufp = b; *bufp != NULL; bufp++)
402	    el_free((ptr_t) *bufp);
403	el_free((ptr_t) b);
404    }
405    b = el->el_vdisplay;
406    el->el_vdisplay = NULL;
407    if (b != NULL) {
408	for (bufp = b; *bufp != NULL; bufp++)
409	    el_free((ptr_t) * bufp);
410	el_free((ptr_t) b);
411    }
412} /* end term_free_display */
413
414
415/* term_move_to_line():
416 *	move to line <where> (first line == 0)
417 * 	as efficiently as possible
418 */
419protected void
420term_move_to_line(el, where)
421    EditLine *el;
422    int     where;
423{
424    int     del, i;
425
426    if (where == el->el_cursor.v)
427	return;
428
429    if (where > el->el_term.t_size.v) {
430#ifdef DEBUG_SCREEN
431	(void) fprintf(el->el_errfile,
432		"term_move_to_line: where is ridiculous: %d\r\n", where);
433#endif /* DEBUG_SCREEN */
434	return;
435    }
436
437    if ((del = where - el->el_cursor.v) > 0) {
438	if ((del > 1) && GoodStr(T_DO))
439	    (void) tputs(tgoto(Str(T_DO), del, del), del, term__putc);
440	else {
441	    for (i = 0; i < del; i++)
442		term__putc('\n');
443	    el->el_cursor.h = 0;	/* because the \n will become \r\n */
444	}
445    }
446    else {			/* del < 0 */
447	if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up)))
448	    (void) tputs(tgoto(Str(T_UP), -del, -del), -del, term__putc);
449	else {
450	    if (GoodStr(T_up))
451		for (i = 0; i < -del; i++)
452		    (void) tputs(Str(T_up), 1, term__putc);
453	}
454    }
455    el->el_cursor.v = where;		/* now where is here */
456} /* end term_move_to_line */
457
458
459/* term_move_to_char():
460 *	Move to the character position specified
461 */
462protected void
463term_move_to_char(el, where)
464    EditLine *el;
465    int     where;
466{
467    int     del, i;
468
469mc_again:
470    if (where == el->el_cursor.h)
471	return;
472
473    if (where > (el->el_term.t_size.h + 1)) {
474#ifdef DEBUG_SCREEN
475	(void) fprintf(el->el_errfile,
476		"term_move_to_char: where is riduculous: %d\r\n", where);
477#endif /* DEBUG_SCREEN */
478	return;
479    }
480
481    if (!where) {		/* if where is first column */
482	term__putc('\r');	/* do a CR */
483	el->el_cursor.h = 0;
484	return;
485    }
486
487    del = where - el->el_cursor.h;
488
489    if ((del < -4 || del > 4) && GoodStr(T_ch))
490	/* go there directly */
491	(void) tputs(tgoto(Str(T_ch), where, where), where, term__putc);
492    else {
493	if (del > 0) {		/* moving forward */
494	    if ((del > 4) && GoodStr(T_RI))
495		(void) tputs(tgoto(Str(T_RI), del, del), del, term__putc);
496	    else {
497		if (EL_CAN_TAB) {	/* if I can do tabs, use them */
498		    if ((el->el_cursor.h & 0370) != (where & 0370)) {
499			/* if not within tab stop */
500			for (i = (el->el_cursor.h & 0370);
501			     i < (where & 0370); i += 8)
502			    term__putc('\t');	/* then tab over */
503			el->el_cursor.h = where & 0370;
504		    }
505		}
506		/* it's usually cheaper to just write the chars, so we do. */
507
508		/* NOTE THAT term_overwrite() WILL CHANGE el->el_cursor.h!!! */
509		term_overwrite(el,
510			&el->el_display[el->el_cursor.v][el->el_cursor.h],
511		        where - el->el_cursor.h);
512
513	    }
514	}
515	else {			/* del < 0 := moving backward */
516	    if ((-del > 4) && GoodStr(T_LE))
517		(void) tputs(tgoto(Str(T_LE), -del, -del), -del, term__putc);
518	    else {		/* can't go directly there */
519		/* if the "cost" is greater than the "cost" from col 0 */
520		if (EL_CAN_TAB ? (-del > ((where >> 3) + (where & 07)))
521		    : (-del > where)) {
522		    term__putc('\r');	/* do a CR */
523		    el->el_cursor.h = 0;
524		    goto mc_again;	/* and try again */
525		}
526		for (i = 0; i < -del; i++)
527		    term__putc('\b');
528	    }
529	}
530    }
531    el->el_cursor.h = where;		/* now where is here */
532} /* end term_move_to_char */
533
534
535/* term_overwrite():
536 *	Overstrike num characters
537 */
538protected void
539term_overwrite(el, cp, n)
540    EditLine *el;
541    char *cp;
542    int n;
543{
544    if (n <= 0)
545	return;			/* catch bugs */
546
547    if (n > (el->el_term.t_size.h + 1)) {
548#ifdef DEBUG_SCREEN
549	(void) fprintf(el->el_errfile, "term_overwrite: n is riduculous: %d\r\n", n);
550#endif /* DEBUG_SCREEN */
551	return;
552    }
553
554    do {
555	term__putc(*cp++);
556	el->el_cursor.h++;
557    } while (--n);
558} /* end term_overwrite */
559
560
561/* term_deletechars():
562 *	Delete num characters
563 */
564protected void
565term_deletechars(el, num)
566    EditLine *el;
567    int     num;
568{
569    if (num <= 0)
570	return;
571
572    if (!EL_CAN_DELETE) {
573#ifdef DEBUG_EDIT
574	(void) fprintf(el->el_errfile, "   ERROR: cannot delete   \n");
575#endif /* DEBUG_EDIT */
576	return;
577    }
578
579    if (num > el->el_term.t_size.h) {
580#ifdef DEBUG_SCREEN
581	(void) fprintf(el->el_errfile,
582		"term_deletechars: num is riduculous: %d\r\n", num);
583#endif /* DEBUG_SCREEN */
584	return;
585    }
586
587    if (GoodStr(T_DC))		/* if I have multiple delete */
588	if ((num > 1) || !GoodStr(T_dc)) {	/* if dc would be more expen. */
589	    (void) tputs(tgoto(Str(T_DC), num, num), num, term__putc);
590	    return;
591	}
592
593    if (GoodStr(T_dm))		/* if I have delete mode */
594	(void) tputs(Str(T_dm), 1, term__putc);
595
596    if (GoodStr(T_dc))		/* else do one at a time */
597	while (num--)
598	    (void) tputs(Str(T_dc), 1, term__putc);
599
600    if (GoodStr(T_ed))		/* if I have delete mode */
601	(void) tputs(Str(T_ed), 1, term__putc);
602} /* end term_deletechars */
603
604
605/* term_insertwrite():
606 *	Puts terminal in insert character mode or inserts num
607 *	characters in the line
608 */
609protected void
610term_insertwrite(el, cp, num)
611    EditLine *el;
612    char *cp;
613    int num;
614{
615    if (num <= 0)
616	return;
617    if (!EL_CAN_INSERT) {
618#ifdef DEBUG_EDIT
619	(void) fprintf(el->el_errfile, "   ERROR: cannot insert   \n");
620#endif /* DEBUG_EDIT */
621	return;
622    }
623
624    if (num > el->el_term.t_size.h) {
625#ifdef DEBUG_SCREEN
626	(void) fprintf(el->el_errfile, "StartInsert: num is riduculous: %d\r\n", num);
627#endif /* DEBUG_SCREEN */
628	return;
629    }
630
631    if (GoodStr(T_IC))		/* if I have multiple insert */
632	if ((num > 1) || !GoodStr(T_ic)) {	/* if ic would be more expen. */
633	    (void) tputs(tgoto(Str(T_IC), num, num), num, term__putc);
634	    term_overwrite(el, cp, num);	/* this updates el_cursor.h */
635	    return;
636	}
637
638    if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */
639	(void) tputs(Str(T_im), 1, term__putc);
640
641	el->el_cursor.h += num;
642	do
643	    term__putc(*cp++);
644	while (--num);
645
646	if (GoodStr(T_ip))	/* have to make num chars insert */
647	    (void) tputs(Str(T_ip), 1, term__putc);
648
649	(void) tputs(Str(T_ei), 1, term__putc);
650	return;
651    }
652
653    do {
654	if (GoodStr(T_ic))	/* have to make num chars insert */
655	    (void) tputs(Str(T_ic), 1, term__putc);	/* insert a char */
656
657	term__putc(*cp++);
658
659	el->el_cursor.h++;
660
661	if (GoodStr(T_ip))	/* have to make num chars insert */
662	    (void) tputs(Str(T_ip), 1, term__putc);/* pad the inserted char */
663
664    } while (--num);
665} /* end term_insertwrite */
666
667
668/* term_clear_EOL():
669 *	clear to end of line.  There are num characters to clear
670 */
671protected void
672term_clear_EOL(el, num)
673    EditLine *el;
674    int     num;
675{
676    int i;
677
678    if (EL_CAN_CEOL && GoodStr(T_ce))
679	(void) tputs(Str(T_ce), 1, term__putc);
680    else {
681	for (i = 0; i < num; i++)
682	    term__putc(' ');
683	el->el_cursor.h += num;		/* have written num spaces */
684    }
685} /* end term_clear_EOL */
686
687
688/* term_clear_screen():
689 *	Clear the screen
690 */
691protected void
692term_clear_screen(el)
693    EditLine *el;
694{				/* clear the whole screen and home */
695    if (GoodStr(T_cl))
696	/* send the clear screen code */
697	(void) tputs(Str(T_cl), Val(T_li), term__putc);
698    else if (GoodStr(T_ho) && GoodStr(T_cd)) {
699	(void) tputs(Str(T_ho), Val(T_li), term__putc);	/* home */
700	/* clear to bottom of screen */
701	(void) tputs(Str(T_cd), Val(T_li), term__putc);
702    }
703    else {
704	term__putc('\r');
705	term__putc('\n');
706    }
707} /* end term_clear_screen */
708
709
710/* term_beep():
711 *	Beep the way the terminal wants us
712 */
713protected void
714term_beep(el)
715    EditLine *el;
716{
717    if (GoodStr(T_vb))
718	(void) tputs(Str(T_vb), 1, term__putc);	/* visible bell */
719    else if (GoodStr(T_bl))
720	/* what termcap says we should use */
721	(void) tputs(Str(T_bl), 1, term__putc);
722    else
723	term__putc('\007');	/* an ASCII bell; ^G */
724} /* end term_beep */
725
726
727#ifdef notdef
728/* term_clear_to_bottom():
729 *	Clear to the bottom of the screen
730 */
731protected void
732term_clear_to_bottom(el)
733    EditLine *el;
734{
735    if (GoodStr(T_cd))
736	(void) tputs(Str(T_cd), Val(T_li), term__putc);
737    else if (GoodStr(T_ce))
738	(void) tputs(Str(T_ce), Val(T_li), term__putc);
739} /* end term_clear_to_bottom */
740#endif
741
742
743/* term_set():
744 *	Read in the terminal capabilities from the requested terminal
745 */
746protected int
747term_set(el, term)
748    EditLine *el;
749    char *term;
750{
751    int i;
752    char    buf[TC_BUFSIZE];
753    char   *area;
754    struct termcapstr *t;
755    sigset_t oset, nset;
756    int     lins, cols;
757
758    (void) sigemptyset(&nset);
759    (void) sigaddset(&nset, SIGWINCH);
760    (void) sigprocmask(SIG_BLOCK, &nset, &oset);
761
762    area = buf;
763
764
765    if (term == NULL)
766	term = getenv("TERM");
767
768    if (!term || !term[0])
769	term = "dumb";
770
771    memset(el->el_term.t_cap, 0, TC_BUFSIZE);
772
773    i = tgetent(el->el_term.t_cap, term);
774
775    if (i <= 0) {
776	if (i == -1)
777	    (void) fprintf(el->el_errfile, "Cannot read termcap database;\n");
778	else if (i == 0)
779	    (void) fprintf(el->el_errfile,
780			   "No entry for terminal type \"%s\";\n", term);
781	(void) fprintf(el->el_errfile, "using dumb terminal settings.\n");
782	Val(T_co) = 80;		/* do a dumb terminal */
783	Val(T_pt) = Val(T_km) = Val(T_li) = 0;
784	Val(T_xt) = Val(T_MT);
785	for (t = tstr; t->name != NULL; t++)
786	    term_alloc(el, t, NULL);
787    }
788    else {
789	/* Can we tab */
790	Val(T_pt) = tgetflag("pt");
791	Val(T_xt) = tgetflag("xt");
792	/* do we have a meta? */
793	Val(T_km) = tgetflag("km");
794	Val(T_MT) = tgetflag("MT");
795	/* Get the size */
796	Val(T_co) = tgetnum("co");
797	Val(T_li) = tgetnum("li");
798	for (t = tstr; t->name != NULL; t++)
799	    term_alloc(el, t, tgetstr(t->name, &area));
800    }
801
802    if (Val(T_co) < 2)
803	Val(T_co) = 80;		/* just in case */
804    if (Val(T_li) < 1)
805	Val(T_li) = 24;
806
807    el->el_term.t_size.v = Val(T_co);
808    el->el_term.t_size.h = Val(T_li);
809
810    term_setflags(el);
811
812    (void) term_get_size(el, &lins, &cols);/* get the correct window size */
813    term_change_size(el, lins, cols);
814    (void) sigprocmask(SIG_SETMASK, &oset, NULL);
815    term_bind_arrow(el);
816    return i <= 0 ? -1 : 0;
817} /* end term_set */
818
819
820/* term_get_size():
821 *	Return the new window size in lines and cols, and
822 *	true if the size was changed.
823 */
824protected int
825term_get_size(el, lins, cols)
826    EditLine *el;
827    int    *lins, *cols;
828{
829
830    *cols = Val(T_co);
831    *lins = Val(T_li);
832
833#ifdef TIOCGWINSZ
834    {
835	struct winsize ws;
836	if (ioctl(el->el_infd, TIOCGWINSZ, (ioctl_t) &ws) != -1) {
837	    if (ws.ws_col)
838		*cols = ws.ws_col;
839	    if (ws.ws_row)
840		*lins = ws.ws_row;
841	}
842    }
843#endif
844#ifdef TIOCGSIZE
845    {
846	struct ttysize ts;
847	if (ioctl(el->el_infd, TIOCGSIZE, (ioctl_t) &ts) != -1) {
848	    if (ts.ts_cols)
849		*cols = ts.ts_cols;
850	    if (ts.ts_lines)
851		*lins = ts.ts_lines;
852	}
853    }
854#endif
855    return (Val(T_co) != *cols || Val(T_li) != *lins);
856} /* end term_get_size */
857
858
859/* term_change_size():
860 *	Change the size of the terminal
861 */
862protected void
863term_change_size(el, lins, cols)
864    EditLine *el;
865    int     lins, cols;
866{
867    /*
868     * Just in case
869     */
870    Val(T_co) = (cols < 2) ? 80 : cols;
871    Val(T_li) = (lins < 1) ? 24 : lins;
872
873    term_rebuffer_display(el);		/* re-make display buffers */
874    re_clear_display(el);
875} /* end term_change_size */
876
877
878/* term_init_arrow():
879 *	Initialize the arrow key bindings from termcap
880 */
881private void
882term_init_arrow(el)
883    EditLine *el;
884{
885    fkey_t *arrow = el->el_term.t_fkey;
886
887    arrow[A_K_DN].name    = "down";
888    arrow[A_K_DN].key	  = T_kd;
889    arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY;
890    arrow[A_K_DN].type    = XK_CMD;
891
892    arrow[A_K_UP].name    = "up";
893    arrow[A_K_UP].key	  = T_ku;
894    arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY;
895    arrow[A_K_UP].type    = XK_CMD;
896
897    arrow[A_K_LT].name    = "left";
898    arrow[A_K_LT].key	  = T_kl;
899    arrow[A_K_LT].fun.cmd = ED_PREV_CHAR;
900    arrow[A_K_LT].type    = XK_CMD;
901
902    arrow[A_K_RT].name    = "right";
903    arrow[A_K_RT].key	  = T_kr;
904    arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR;
905    arrow[A_K_RT].type    = XK_CMD;
906
907    arrow[A_K_HO].name    = "home";
908    arrow[A_K_HO].key     = T_kh;
909    arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG;
910    arrow[A_K_HO].type    = XK_CMD;
911
912    arrow[A_K_EN].name    = "end";
913    arrow[A_K_EN].key     = T_at7;
914    arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END;
915    arrow[A_K_EN].type    = XK_CMD;
916}
917
918
919/* term_reset_arrow():
920 *	Reset arrow key bindings
921 */
922private void
923term_reset_arrow(el)
924    EditLine *el;
925{
926    fkey_t *arrow = el->el_term.t_fkey;
927    static char strA[] = {033, '[', 'A', '\0'};
928    static char strB[] = {033, '[', 'B', '\0'};
929    static char strC[] = {033, '[', 'C', '\0'};
930    static char strD[] = {033, '[', 'D', '\0'};
931    static char str1[] = {033, '[', '1', '~', '\0'};
932    static char str4[] = {033, '[', '4', '~', '\0'};
933    static char stOA[] = {033, 'O', 'A', '\0'};
934    static char stOB[] = {033, 'O', 'B', '\0'};
935    static char stOC[] = {033, 'O', 'C', '\0'};
936    static char stOD[] = {033, 'O', 'D', '\0'};
937
938    key_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
939    key_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
940    key_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
941    key_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
942    key_add(el, str1, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
943    key_add(el, str4, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
944    key_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
945    key_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
946    key_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
947    key_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
948
949    if (el->el_map.type == MAP_VI) {
950	key_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
951	key_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
952	key_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
953	key_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
954	key_add(el, &str1[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
955	key_add(el, &str4[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
956	key_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
957	key_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
958	key_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
959	key_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
960    }
961}
962
963
964/* term_set_arrow():
965 *	Set an arrow key binding
966 */
967protected int
968term_set_arrow(el, name, fun, type)
969    EditLine *el;
970    char *name;
971    key_value_t *fun;
972    int type;
973{
974    fkey_t *arrow = el->el_term.t_fkey;
975    int i;
976
977    for (i = 0; i < A_K_NKEYS; i++)
978	if (strcmp(name, arrow[i].name) == 0) {
979	    arrow[i].fun  = *fun;
980	    arrow[i].type = type;
981	    return 0;
982	}
983    return -1;
984}
985
986
987/* term_clear_arrow():
988 *	Clear an arrow key binding
989 */
990protected int
991term_clear_arrow(el, name)
992    EditLine *el;
993    char *name;
994{
995    fkey_t *arrow = el->el_term.t_fkey;
996    int i;
997
998    for (i = 0; i < A_K_NKEYS; i++)
999	if (strcmp(name, arrow[i].name) == 0) {
1000	    arrow[i].type = XK_NOD;
1001	    return 0;
1002	}
1003    return -1;
1004}
1005
1006
1007/* term_print_arrow():
1008 *	Print the arrow key bindings
1009 */
1010protected void
1011term_print_arrow(el, name)
1012    EditLine *el;
1013    char *name;
1014{
1015    int i;
1016    fkey_t *arrow = el->el_term.t_fkey;
1017
1018    for (i = 0; i < A_K_NKEYS; i++)
1019	if (*name == '\0' || strcmp(name, arrow[i].name) == 0)
1020	    if (arrow[i].type != XK_NOD)
1021		key_kprint(el, arrow[i].name, &arrow[i].fun, arrow[i].type);
1022}
1023
1024
1025/* term_bind_arrow():
1026 *	Bind the arrow keys
1027 */
1028protected void
1029term_bind_arrow(el)
1030    EditLine *el;
1031{
1032    el_action_t *map, *dmap;
1033    int     i, j;
1034    char   *p;
1035    fkey_t *arrow = el->el_term.t_fkey;
1036
1037    /* Check if the components needed are initialized */
1038    if (el->el_term.t_buf == NULL || el->el_map.key == NULL)
1039	return;
1040
1041    map  = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key;
1042    dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs;
1043
1044    term_reset_arrow(el);
1045
1046    for (i = 0; i < A_K_NKEYS; i++) {
1047	p = el->el_term.t_str[arrow[i].key];
1048	if (p && *p) {
1049	    j = (unsigned char) *p;
1050	    /*
1051	     * Assign the arrow keys only if:
1052	     *
1053	     * 1. They are multi-character arrow keys and the user
1054	     *    has not re-assigned the leading character, or
1055	     *    has re-assigned the leading character to be
1056	     *	  ED_SEQUENCE_LEAD_IN
1057	     * 2. They are single arrow keys pointing to an unassigned key.
1058	     */
1059	    if (arrow[i].type == XK_NOD)
1060		key_clear(el, map, p);
1061	    else {
1062		if (p[1] && (dmap[j] == map[j] ||
1063			     map[j] == ED_SEQUENCE_LEAD_IN)) {
1064		    key_add(el, p, &arrow[i].fun, arrow[i].type);
1065		    map[j] = ED_SEQUENCE_LEAD_IN;
1066		}
1067		else if (map[j] == ED_UNASSIGNED) {
1068		    key_clear(el, map, p);
1069		    if (arrow[i].type == XK_CMD)
1070			map[j] = arrow[i].fun.cmd;
1071		    else
1072			key_add(el, p, &arrow[i].fun, arrow[i].type);
1073		}
1074	    }
1075	}
1076    }
1077}
1078
1079
1080/* term__putc():
1081 *	Add a character
1082 */
1083protected int
1084term__putc(c)
1085    int c;
1086{
1087    return fputc(c, term_outfile);
1088} /* end term__putc */
1089
1090
1091/* term__flush():
1092 *	Flush output
1093 */
1094protected void
1095term__flush()
1096{
1097    (void) fflush(term_outfile);
1098} /* end term__flush */
1099
1100
1101/* term_telltc():
1102 *	Print the current termcap characteristics
1103 */
1104protected int
1105/*ARGSUSED*/
1106term_telltc(el, argc, argv)
1107    EditLine *el;
1108    int argc;
1109    char **argv;
1110{
1111    struct termcapstr *t;
1112    char **ts;
1113    char upbuf[EL_BUFSIZ];
1114
1115    (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n");
1116    (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n");
1117    (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n",
1118	    Val(T_co), Val(T_li));
1119    (void) fprintf(el->el_outfile,
1120		   "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no");
1121    (void) fprintf(el->el_outfile,
1122		   "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not ");
1123#ifdef notyet
1124    (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n",
1125		   (T_Margin&MARGIN_AUTO)? "has": "does not have");
1126    if (T_Margin & MARGIN_AUTO)
1127	(void) fprintf(el->el_outfile, "\tIt %s magic margins\n",
1128			(T_Margin&MARGIN_MAGIC)?"has":"does not have");
1129#endif
1130
1131    for (t = tstr, ts = el->el_term.t_str; t->name != NULL; t++, ts++)
1132	(void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n", t->long_name,
1133		       t->name, *ts && **ts ?
1134			key__decode_str(*ts, upbuf, "") : "(empty)");
1135    (void) fputc('\n', el->el_outfile);
1136    return 0;
1137}
1138
1139
1140/* term_settc():
1141 *	Change the current terminal characteristics
1142 */
1143protected int
1144/*ARGSUSED*/
1145term_settc(el, argc, argv)
1146    EditLine *el;
1147    int argc;
1148    char **argv;
1149{
1150    struct termcapstr *ts;
1151    struct termcapval *tv;
1152    char   *what, *how;
1153
1154    if (argv == NULL || argv[1] == NULL || argv[2] == NULL)
1155	return -1;
1156
1157    what = argv[1];
1158    how = argv[2];
1159
1160    /*
1161     * Do the strings first
1162     */
1163    for (ts = tstr; ts->name != NULL; ts++)
1164	if (strcmp(ts->name, what) == 0)
1165	    break;
1166
1167    if (ts->name != NULL) {
1168	term_alloc(el, ts, how);
1169	term_setflags(el);
1170	return 0;
1171    }
1172
1173    /*
1174     * Do the numeric ones second
1175     */
1176    for (tv = tval; tv->name != NULL; tv++)
1177	if (strcmp(tv->name, what) == 0)
1178	    break;
1179
1180    if (tv->name != NULL) {
1181	if (tv == &tval[T_pt] || tv == &tval[T_km]
1182#ifdef notyet
1183	    || tv == &tval[T_am] || tv == &tval[T_xn]
1184#endif
1185	    ) {
1186	    if (strcmp(how, "yes") == 0)
1187		el->el_term.t_val[tv - tval] = 1;
1188	    else if (strcmp(how, "no") == 0)
1189		el->el_term.t_val[tv - tval] = 0;
1190	    else {
1191		(void) fprintf(el->el_errfile, "settc: Bad value `%s'.\n", how);
1192		return -1;
1193	    }
1194	    term_setflags(el);
1195	    term_change_size(el, Val(T_li), Val(T_co));
1196	    return 0;
1197	}
1198	else {
1199	    el->el_term.t_val[tv - tval] = atoi(how);
1200	    el->el_term.t_size.v = Val(T_co);
1201	    el->el_term.t_size.h = Val(T_li);
1202	    if (tv == &tval[T_co] || tv == &tval[T_li])
1203		term_change_size(el, Val(T_li), Val(T_co));
1204	    return 0;
1205	}
1206    }
1207    return -1;
1208}
1209
1210
1211/* term_echotc():
1212 *	Print the termcap string out with variable substitution
1213 */
1214protected int
1215/*ARGSUSED*/
1216term_echotc(el, argc, argv)
1217    EditLine *el;
1218    int argc;
1219    char **argv;
1220{
1221    char   *cap, *scap;
1222    int     arg_need, arg_cols, arg_rows;
1223    int     verbose = 0, silent = 0;
1224    char   *area;
1225    static char *fmts = "%s\n", *fmtd = "%d\n";
1226    struct termcapstr *t;
1227    char    buf[TC_BUFSIZE];
1228
1229    area = buf;
1230
1231    if (argv == NULL || argv[1] == NULL)
1232	return -1;
1233    argv++;
1234
1235    if (argv[0][0] == '-') {
1236	switch (argv[0][1]) {
1237	case 'v':
1238	    verbose = 1;
1239	    break;
1240	case 's':
1241	    silent = 1;
1242	    break;
1243	default:
1244	    /* stderror(ERR_NAME | ERR_TCUSAGE); */
1245	    break;
1246	}
1247	argv++;
1248    }
1249    if (!*argv || *argv[0] == '\0')
1250	return 0;
1251    if (strcmp(*argv, "tabs") == 0) {
1252	(void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no");
1253	return 0;
1254    }
1255    else if (strcmp(*argv, "meta") == 0) {
1256	(void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no");
1257	return 0;
1258    }
1259#ifdef notyet
1260    else if (strcmp(*argv, "xn") == 0) {
1261	(void) fprintf(el->el_outfile, fmts, T_Margin & MARGIN_MAGIC ?
1262			"yes" : "no");
1263	return 0;
1264    }
1265    else if (strcmp(*argv, "am") == 0) {
1266	(void) fprintf(el->el_outfile, fmts, T_Margin & MARGIN_AUTO ?
1267			"yes" : "no");
1268	return 0;
1269    }
1270#endif
1271    else if (strcmp(*argv, "baud") == 0) {
1272	(void) fprintf(el->el_outfile, "%lu\n", (u_long)el->el_tty.t_speed);
1273	return 0;
1274    }
1275    else if (strcmp(*argv, "rows") == 0 || strcmp(*argv, "lines") == 0) {
1276	(void) fprintf(el->el_outfile, fmtd, Val(T_li));
1277	return 0;
1278    }
1279    else if (strcmp(*argv, "cols") == 0) {
1280	(void) fprintf(el->el_outfile, fmtd, Val(T_co));
1281	return 0;
1282    }
1283
1284    /*
1285     * Try to use our local definition first
1286     */
1287    scap = NULL;
1288    for (t = tstr; t->name != NULL; t++)
1289	if (strcmp(t->name, *argv) == 0) {
1290	    scap = el->el_term.t_str[t - tstr];
1291	    break;
1292	}
1293    if (t->name == NULL)
1294	scap = tgetstr(*argv, &area);
1295    if (!scap || scap[0] == '\0') {
1296	if (!silent)
1297	    (void) fprintf(el->el_errfile,
1298		"echotc: Termcap parameter `%s' not found.\n", *argv);
1299	return -1;
1300    }
1301
1302    /*
1303     * Count home many values we need for this capability.
1304     */
1305    for (cap = scap, arg_need = 0; *cap; cap++)
1306	if (*cap == '%')
1307	    switch (*++cap) {
1308	    case 'd':
1309	    case '2':
1310	    case '3':
1311	    case '.':
1312	    case '+':
1313		arg_need++;
1314		break;
1315	    case '%':
1316	    case '>':
1317	    case 'i':
1318	    case 'r':
1319	    case 'n':
1320	    case 'B':
1321	    case 'D':
1322		break;
1323	    default:
1324		/*
1325		 * hpux has lot's of them...
1326		 */
1327		if (verbose)
1328		    (void) fprintf(el->el_errfile,
1329			"echotc: Warning: unknown termcap %% `%c'.\n", *cap);
1330		/* This is bad, but I won't complain */
1331		break;
1332	    }
1333
1334    switch (arg_need) {
1335    case 0:
1336	argv++;
1337	if (*argv && *argv[0]) {
1338	    if (!silent)
1339		(void) fprintf(el->el_errfile,
1340		    "echotc: Warning: Extra argument `%s'.\n", *argv);
1341	    return -1;
1342	}
1343	(void) tputs(scap, 1, term__putc);
1344	break;
1345    case 1:
1346	argv++;
1347	if (!*argv || *argv[0] == '\0') {
1348	    if (!silent)
1349		(void) fprintf(el->el_errfile,
1350		    "echotc: Warning: Missing argument.\n");
1351	    return -1;
1352	}
1353	arg_cols = 0;
1354	arg_rows = atoi(*argv);
1355	argv++;
1356	if (*argv && *argv[0]) {
1357	    if (!silent)
1358		(void) fprintf(el->el_errfile,
1359		    "echotc: Warning: Extra argument `%s'.\n", *argv);
1360	    return -1;
1361	}
1362	(void) tputs(tgoto(scap, arg_cols, arg_rows), 1, term__putc);
1363	break;
1364    default:
1365	/* This is wrong, but I will ignore it... */
1366	if (verbose)
1367	    (void) fprintf(el->el_errfile,
1368		"echotc: Warning: Too many required arguments (%d).\n",
1369		arg_need);
1370	/*FALLTHROUGH*/
1371    case 2:
1372	argv++;
1373	if (!*argv || *argv[0] == '\0') {
1374	    if (!silent)
1375		(void) fprintf(el->el_errfile,
1376		    "echotc: Warning: Missing argument.\n");
1377	    return -1;
1378	}
1379	arg_cols = atoi(*argv);
1380	argv++;
1381	if (!*argv || *argv[0] == '\0') {
1382	    if (!silent)
1383		(void) fprintf(el->el_errfile,
1384		    "echotc: Warning: Missing argument.\n");
1385	    return -1;
1386	}
1387	arg_rows = atoi(*argv);
1388	argv++;
1389	if (*argv && *argv[0]) {
1390	    if (!silent)
1391		(void) fprintf(el->el_errfile,
1392		    "echotc: Warning: Extra argument `%s'.\n", *argv);
1393	    return -1;
1394	}
1395	(void) tputs(tgoto(scap, arg_cols, arg_rows), arg_rows, term__putc);
1396	break;
1397    }
1398    return 0;
1399}
1400