2 * Copyright (c) 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 1993, 1994, 1995, 1996
5 * Keith Bostic. All rights reserved.
7 * See the LICENSE file for redistribution information.
13 static const char sccsid
[] = "$Id: cl_term.c,v 10.31 2001/07/08 13:06:56 skimo Exp $ (Berkeley) $Date: 2001/07/08 13:06:56 $";
16 #include <sys/types.h>
17 #include <sys/ioctl.h>
18 #include <sys/queue.h>
21 #include <bitstring.h>
31 #include "../common/common.h"
34 static int cl_pfmap
__P((SCR
*, seq_t
, CHAR_T
*, size_t, CHAR_T
*, size_t));
38 * THIS REQUIRES THAT ALL SCREENS SHARE A TERMINAL TYPE.
40 typedef struct _tklist
{
41 char *ts
; /* Key's termcap string. */
42 char *output
; /* Corresponding vi command. */
43 char *name
; /* Name. */
44 u_char value
; /* Special value (for lookup). */
46 static TKLIST
const c_tklist
[] = { /* Command mappings. */
47 {"kil1", "O", "insert line"},
48 {"kdch1", "x", "delete character"},
49 {"kcud1", "j", "cursor down"},
50 {"kel", "D", "delete to eol"},
51 {"kind", "\004", "scroll down"}, /* ^D */
52 {"kll", "$", "go to eol"},
53 {"kend", "$", "go to eol"},
54 {"khome", "^", "go to sol"},
55 {"kich1", "i", "insert at cursor"},
56 {"kdl1", "dd", "delete line"},
57 {"kcub1", "h", "cursor left"},
58 {"knp", "\006", "page down"}, /* ^F */
59 {"kpp", "\002", "page up"}, /* ^B */
60 {"kri", "\025", "scroll up"}, /* ^U */
61 {"ked", "dG", "delete to end of screen"},
62 {"kcuf1", "l", "cursor right"},
63 {"kcuu1", "k", "cursor up"},
66 static TKLIST
const m1_tklist
[] = { /* Input mappings (lookup). */
69 static TKLIST
const m2_tklist
[] = { /* Input mappings (set or delete). */
70 {"kcud1", "\033ja", "cursor down"}, /* ^[ja */
71 {"kcub1", "\033ha", "cursor left"}, /* ^[ha */
72 {"kcuu1", "\033ka", "cursor up"}, /* ^[ka */
73 {"kcuf1", "\033la", "cursor right"}, /* ^[la */
79 * Initialize the special keys defined by the termcap/terminfo entry.
81 * PUBLIC: int cl_term_init __P((SCR *));
96 /* Command mappings. */
97 for (tkp
= c_tklist
; tkp
->name
!= NULL
; ++tkp
) {
98 if ((t
= tigetstr(tkp
->ts
)) == NULL
|| t
== (char *)-1)
100 CHAR2INT(sp
, tkp
->name
, strlen(tkp
->name
), wp
, wlen
);
101 MEMCPYW(name
, wp
, wlen
);
102 CHAR2INT(sp
, t
, strlen(t
), wp
, wlen
);
103 MEMCPYW(ts
, wp
, wlen
);
104 CHAR2INT(sp
, tkp
->output
, strlen(tkp
->output
), wp
, wlen
);
105 MEMCPYW(output
, wp
, wlen
);
106 if (seq_set(sp
, name
, strlen(tkp
->name
), ts
, strlen(t
),
107 output
, strlen(tkp
->output
), SEQ_COMMAND
,
108 SEQ_NOOVERWRITE
| SEQ_SCREEN
))
112 /* Input mappings needing to be looked up. */
113 for (tkp
= m1_tklist
; tkp
->name
!= NULL
; ++tkp
) {
114 if ((t
= tigetstr(tkp
->ts
)) == NULL
|| t
== (char *)-1)
116 for (kp
= keylist
;; ++kp
)
117 if (kp
->value
== tkp
->value
)
121 CHAR2INT(sp
, tkp
->name
, strlen(tkp
->name
), wp
, wlen
);
122 MEMCPYW(name
, wp
, wlen
);
123 CHAR2INT(sp
, t
, strlen(t
), wp
, wlen
);
124 MEMCPYW(ts
, wp
, wlen
);
125 if (seq_set(sp
, name
, strlen(tkp
->name
), ts
, strlen(t
),
126 &kp
->ch
, 1, SEQ_INPUT
, SEQ_NOOVERWRITE
| SEQ_SCREEN
))
130 /* Input mappings that are already set or are text deletions. */
131 for (tkp
= m2_tklist
; tkp
->name
!= NULL
; ++tkp
) {
132 if ((t
= tigetstr(tkp
->ts
)) == NULL
|| t
== (char *)-1)
136 * Some terminals' <cursor_left> keys send single <backspace>
137 * characters. This is okay in command mapping, but not okay
138 * in input mapping. That combination is the only one we'll
139 * ever see, hopefully, so kluge it here for now.
141 if (!strcmp(t
, "\b"))
143 if (tkp
->output
== NULL
) {
144 CHAR2INT(sp
, tkp
->name
, strlen(tkp
->name
), wp
, wlen
);
145 MEMCPYW(name
, wp
, wlen
);
146 CHAR2INT(sp
, t
, strlen(t
), wp
, wlen
);
147 MEMCPYW(ts
, wp
, wlen
);
148 if (seq_set(sp
, name
, strlen(tkp
->name
),
149 ts
, strlen(t
), NULL
, 0,
150 SEQ_INPUT
, SEQ_NOOVERWRITE
| SEQ_SCREEN
))
153 CHAR2INT(sp
, tkp
->name
, strlen(tkp
->name
), wp
, wlen
);
154 MEMCPYW(name
, wp
, wlen
);
155 CHAR2INT(sp
, t
, strlen(t
), wp
, wlen
);
156 MEMCPYW(ts
, wp
, wlen
);
157 CHAR2INT(sp
, tkp
->output
, strlen(tkp
->output
), wp
, wlen
);
158 MEMCPYW(output
, wp
, wlen
);
159 if (seq_set(sp
, name
, strlen(tkp
->name
),
160 ts
, strlen(t
), output
, strlen(tkp
->output
),
161 SEQ_INPUT
, SEQ_NOOVERWRITE
| SEQ_SCREEN
))
167 * Rework any function key mappings that were set before the
168 * screen was initialized.
170 for (qp
= sp
->gp
->seqq
.lh_first
; qp
!= NULL
; qp
= qp
->q
.le_next
)
171 if (F_ISSET(qp
, SEQ_FUNCMAP
))
172 (void)cl_pfmap(sp
, qp
->stype
,
173 qp
->input
, qp
->ilen
, qp
->output
, qp
->olen
);
179 * End the special keys defined by the termcap/terminfo entry.
181 * PUBLIC: int cl_term_end __P((GS *));
188 /* Delete screen specific mappings. */
189 for (qp
= gp
->seqq
.lh_first
; qp
!= NULL
; qp
= nqp
) {
191 if (F_ISSET(qp
, SEQ_SCREEN
))
199 * Map a function key.
201 * PUBLIC: int cl_fmap __P((SCR *, seq_t, CHAR_T *, size_t, CHAR_T *, size_t));
204 cl_fmap(SCR
*sp
, seq_t stype
, CHAR_T
*from
, size_t flen
, CHAR_T
*to
, size_t tlen
)
206 /* Ignore until the screen is running, do the real work then. */
207 if (F_ISSET(sp
, SC_VI
) && !F_ISSET(sp
, SC_SCR_VI
))
209 if (F_ISSET(sp
, SC_EX
) && !F_ISSET(sp
, SC_SCR_EX
))
212 return (cl_pfmap(sp
, stype
, from
, flen
, to
, tlen
));
217 * Map a function key (private version).
220 cl_pfmap(SCR
*sp
, seq_t stype
, CHAR_T
*from
, size_t flen
, CHAR_T
*to
, size_t tlen
)
230 (void)snprintf(name
, sizeof(name
), "kf%d",
231 (int)STRTOL(from
+1,NULL
,10));
232 if ((p
= tigetstr(name
)) == NULL
||
233 p
== (char *)-1 || strlen(p
) == 0)
236 msgq_wstr(sp
, M_ERR
, from
, "233|This terminal has no %s key");
240 nlen
= SPRINTF(keyname
,
241 SIZE(keyname
), L("function key %d"),
242 (int)STRTOL(from
+1,NULL
,10));
243 CHAR2INT(sp
, p
, strlen(p
), wp
, wlen
);
244 MEMCPYW(ts
, wp
, wlen
);
245 return (seq_set(sp
, keyname
, nlen
,
246 ts
, strlen(p
), to
, tlen
, stype
, SEQ_NOOVERWRITE
| SEQ_SCREEN
));
251 * Curses screen specific "option changed" routine.
253 * PUBLIC: int cl_optchange __P((SCR *, int, char *, u_long *));
256 cl_optchange(SCR
*sp
, int opt
, char *str
, u_long
*valp
)
267 * Changing the columns, lines or terminal require that
268 * we restart the screen.
270 F_SET(sp
->gp
, G_SRESTART
);
271 F_CLR(sp
, SC_SCR_EX
| SC_SCR_VI
);
274 (void)cl_omesg(sp
, clp
, *valp
);
278 F_SET(clp
, CL_RENAME_OK
);
281 * If the screen is live, i.e. we're not reading the
282 * .exrc file, update the window.
284 if (sp
->frp
!= NULL
&& sp
->frp
->name
!= NULL
)
285 (void)cl_rename(sp
, sp
->frp
->name
, 1);
287 F_CLR(clp
, CL_RENAME_OK
);
289 (void)cl_rename(sp
, NULL
, 0);
298 * Turn the tty write permission on or off.
300 * PUBLIC: int cl_omesg __P((SCR *, CL_PRIVATE *, int));
303 cl_omesg(SCR
*sp
, CL_PRIVATE
*clp
, int on
)
308 /* Find the tty, get the current permissions. */
309 if ((tty
= ttyname(STDERR_FILENO
)) == NULL
) {
311 msgq(sp
, M_SYSERR
, "stderr");
314 if (stat(tty
, &sb
) < 0) {
316 msgq(sp
, M_SYSERR
, "%s", tty
);
320 /* Save the original status if it's unknown. */
321 if (clp
->tgw
== TGW_UNKNOWN
)
322 clp
->tgw
= sb
.st_mode
& S_IWGRP
? TGW_SET
: TGW_UNSET
;
324 /* Toggle the permissions. */
326 if (chmod(tty
, sb
.st_mode
| S_IWGRP
) < 0) {
329 "046|messages not turned on: %s", tty
);
333 if (chmod(tty
, sb
.st_mode
& ~S_IWGRP
) < 0) {
336 "045|messages not turned off: %s", tty
);
344 * Return the terminal size.
346 * PUBLIC: int cl_ssize __P((SCR *, int, size_t *, size_t *, int *));
349 cl_ssize(SCR
*sp
, int sigwinch
, size_t *rowp
, size_t *colp
, int *changedp
)
358 /* Assume it's changed. */
359 if (changedp
!= NULL
)
366 * Get the screen rows and columns. If the values are wrong, it's
367 * not a big deal -- as soon as the user sets them explicitly the
368 * environment will be set and the screen package will use the new
375 if (ioctl(STDERR_FILENO
, TIOCGWINSZ
, &win
) != -1) {
380 /* If here because of suspend or a signal, only trust TIOCGWINSZ. */
383 * Somebody didn't get TIOCGWINSZ right, or has suspend
384 * without window resizing support. The user just lost,
385 * but there's nothing we can do.
387 if (row
== 0 || col
== 0) {
388 if (changedp
!= NULL
)
394 * SunOS systems deliver SIGWINCH when windows are uncovered
395 * as well as when they change size. In addition, we call
396 * here when continuing after being suspended since the window
397 * may have changed size. Since we don't want to background
398 * all of the screens just because the window was uncovered,
399 * ignore the signal if there's no change.
402 row
== O_VAL(sp
, O_LINES
) && col
== O_VAL(sp
, O_COLUMNS
)) {
403 if (changedp
!= NULL
)
417 * If TIOCGWINSZ failed, or had entries of 0, try termcap. This
418 * routine is called before any termcap or terminal information
419 * has been set up. If there's no TERM environmental variable set,
420 * let it go, at least ex can run.
422 if (row
== 0 || col
== 0) {
423 if ((p
= getenv("TERM")) == NULL
)
426 if ((rval
= tigetnum("lines")) < 0)
427 msgq(sp
, M_SYSERR
, "tigetnum: lines");
431 if ((rval
= tigetnum("cols")) < 0)
432 msgq(sp
, M_SYSERR
, "tigetnum: cols");
437 /* If nothing else, well, it's probably a VT100. */
438 noterm
: if (row
== 0)
445 * POSIX 1003.2 requires the environment to override everything.
446 * Often, people can get nvi to stop messing up their screen by
447 * deleting the LINES and COLUMNS environment variables from their
450 if ((p
= getenv("LINES")) != NULL
)
451 row
= strtol(p
, NULL
, 10);
452 if ((p
= getenv("COLUMNS")) != NULL
)
453 col
= strtol(p
, NULL
, 10);
464 * Function version of putchar, for tputs.
466 * PUBLIC: int cl_putchar __P((int));
471 return (putchar(ch
));