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 10.33 2012/04/21 23:51:46 zy Exp $";
16 #include <sys/types.h>
17 #include <sys/ioctl.h>
18 #include <sys/queue.h>
21 #include <bitstring.h>
34 #include "../common/common.h"
37 static int cl_pfmap __P((SCR *, seq_t, CHAR_T *, size_t, CHAR_T *, size_t));
41 * THIS REQUIRES THAT ALL SCREENS SHARE A TERMINAL TYPE.
43 typedef struct _tklist {
44 char *ts; /* Key's termcap string. */
45 char *output; /* Corresponding vi command. */
46 char *name; /* Name. */
47 u_char value; /* Special value (for lookup). */
49 static TKLIST const c_tklist[] = { /* Command mappings. */
50 {"kil1", "O", "insert line"},
51 {"kdch1", "x", "delete character"},
52 {"kcud1", "j", "cursor down"},
53 {"kel", "D", "delete to eol"},
54 {"kind", "\004", "scroll down"}, /* ^D */
55 {"kll", "$", "go to eol"},
56 {"kend", "$", "go to eol"},
57 {"khome", "^", "go to sol"},
58 {"kich1", "i", "insert at cursor"},
59 {"kdl1", "dd", "delete line"},
60 {"kcub1", "h", "cursor left"},
61 {"knp", "\006", "page down"}, /* ^F */
62 {"kpp", "\002", "page up"}, /* ^B */
63 {"kri", "\025", "scroll up"}, /* ^U */
64 {"ked", "dG", "delete to end of screen"},
65 {"kcuf1", "l", "cursor right"},
66 {"kcuu1", "k", "cursor up"},
69 static TKLIST const m1_tklist[] = { /* Input mappings (lookup). */
72 static TKLIST const m2_tklist[] = { /* Input mappings (set or delete). */
73 {"kcud1", "\033ja", "cursor down"}, /* ^[ja */
74 {"kcub1", "\033ha", "cursor left"}, /* ^[ha */
75 {"kcuu1", "\033ka", "cursor up"}, /* ^[ka */
76 {"kcuf1", "\033la", "cursor right"}, /* ^[la */
82 * Initialize the special keys defined by the termcap/terminfo entry.
84 * PUBLIC: int cl_term_init __P((SCR *));
99 /* Command mappings. */
100 for (tkp = c_tklist; tkp->name != NULL; ++tkp) {
101 if ((t = tigetstr(tkp->ts)) == NULL || t == (char *)-1)
103 CHAR2INT(sp, tkp->name, strlen(tkp->name), wp, wlen);
104 MEMCPY(name, wp, wlen);
105 CHAR2INT(sp, t, strlen(t), wp, wlen);
106 MEMCPY(ts, wp, wlen);
107 CHAR2INT(sp, tkp->output, strlen(tkp->output), wp, wlen);
108 MEMCPY(output, wp, wlen);
109 if (seq_set(sp, name, strlen(tkp->name), ts, strlen(t),
110 output, strlen(tkp->output), SEQ_COMMAND,
111 SEQ_NOOVERWRITE | SEQ_SCREEN))
115 /* Input mappings needing to be looked up. */
116 for (tkp = m1_tklist; tkp->name != NULL; ++tkp) {
117 if ((t = tigetstr(tkp->ts)) == NULL || t == (char *)-1)
119 for (kp = keylist;; ++kp)
120 if (kp->value == tkp->value)
124 CHAR2INT(sp, tkp->name, strlen(tkp->name), wp, wlen);
125 MEMCPY(name, wp, wlen);
126 CHAR2INT(sp, t, strlen(t), wp, wlen);
127 MEMCPY(ts, wp, wlen);
128 output[0] = (UCHAR_T)kp->ch;
129 if (seq_set(sp, name, strlen(tkp->name), ts, strlen(t),
130 output, 1, SEQ_INPUT, SEQ_NOOVERWRITE | SEQ_SCREEN))
134 /* Input mappings that are already set or are text deletions. */
135 for (tkp = m2_tklist; tkp->name != NULL; ++tkp) {
136 if ((t = tigetstr(tkp->ts)) == NULL || t == (char *)-1)
140 * Some terminals' <cursor_left> keys send single <backspace>
141 * characters. This is okay in command mapping, but not okay
142 * in input mapping. That combination is the only one we'll
143 * ever see, hopefully, so kluge it here for now.
145 if (!strcmp(t, "\b"))
147 if (tkp->output == NULL) {
148 CHAR2INT(sp, tkp->name, strlen(tkp->name), wp, wlen);
149 MEMCPY(name, wp, wlen);
150 CHAR2INT(sp, t, strlen(t), wp, wlen);
151 MEMCPY(ts, wp, wlen);
152 if (seq_set(sp, name, strlen(tkp->name),
153 ts, strlen(t), NULL, 0,
154 SEQ_INPUT, SEQ_NOOVERWRITE | SEQ_SCREEN))
157 CHAR2INT(sp, tkp->name, strlen(tkp->name), wp, wlen);
158 MEMCPY(name, wp, wlen);
159 CHAR2INT(sp, t, strlen(t), wp, wlen);
160 MEMCPY(ts, wp, wlen);
161 CHAR2INT(sp, tkp->output, strlen(tkp->output), wp, wlen);
162 MEMCPY(output, wp, wlen);
163 if (seq_set(sp, name, strlen(tkp->name),
164 ts, strlen(t), output, strlen(tkp->output),
165 SEQ_INPUT, SEQ_NOOVERWRITE | SEQ_SCREEN))
171 * Rework any function key mappings that were set before the
172 * screen was initialized.
174 SLIST_FOREACH(qp, sp->gp->seqq, q)
175 if (F_ISSET(qp, SEQ_FUNCMAP))
176 (void)cl_pfmap(sp, qp->stype,
177 qp->input, qp->ilen, qp->output, qp->olen);
183 * End the special keys defined by the termcap/terminfo entry.
185 * PUBLIC: int cl_term_end __P((GS *));
192 /* Delete screen specific mappings. */
193 SLIST_FOREACH_SAFE(qp, gp->seqq, q, nqp)
194 if (F_ISSET(qp, SEQ_SCREEN)) {
195 SLIST_REMOVE_HEAD(gp->seqq, q);
203 * Map a function key.
205 * PUBLIC: int cl_fmap __P((SCR *, seq_t, CHAR_T *, size_t, CHAR_T *, size_t));
208 cl_fmap(SCR *sp, seq_t stype, CHAR_T *from, size_t flen, CHAR_T *to, size_t tlen)
210 /* Ignore until the screen is running, do the real work then. */
211 if (F_ISSET(sp, SC_VI) && !F_ISSET(sp, SC_SCR_VI))
213 if (F_ISSET(sp, SC_EX) && !F_ISSET(sp, SC_SCR_EX))
216 return (cl_pfmap(sp, stype, from, flen, to, tlen));
221 * Map a function key (private version).
224 cl_pfmap(SCR *sp, seq_t stype, CHAR_T *from, size_t flen, CHAR_T *to, size_t tlen)
234 (void)snprintf(name, sizeof(name), "kf%d",
235 (int)STRTOL(from+1,NULL,10));
236 if ((p = tigetstr(name)) == NULL ||
237 p == (char *)-1 || strlen(p) == 0)
240 msgq_wstr(sp, M_ERR, from, "233|This terminal has no %s key");
244 nlen = SPRINTF(keyname,
245 SIZE(keyname), L("function key %d"),
246 (int)STRTOL(from+1,NULL,10));
247 CHAR2INT(sp, p, strlen(p), wp, wlen);
248 MEMCPY(ts, wp, wlen);
249 return (seq_set(sp, keyname, nlen,
250 ts, strlen(p), to, tlen, stype, SEQ_NOOVERWRITE | SEQ_SCREEN));
255 * Curses screen specific "option changed" routine.
257 * PUBLIC: int cl_optchange __P((SCR *, int, char *, u_long *));
260 cl_optchange(SCR *sp, int opt, char *str, u_long *valp)
271 * Changing the columns, lines or terminal require that
272 * we restart the screen.
274 F_SET(sp->gp, G_SRESTART);
275 F_CLR(sp, SC_SCR_EX | SC_SCR_VI);
278 (void)cl_omesg(sp, clp, *valp);
282 F_SET(clp, CL_RENAME_OK);
285 * If the screen is live, i.e. we're not reading the
286 * .exrc file, update the window.
288 if (sp->frp != NULL && sp->frp->name != NULL)
289 (void)cl_rename(sp, sp->frp->name, 1);
291 F_CLR(clp, CL_RENAME_OK);
293 (void)cl_rename(sp, NULL, 0);
302 * Turn the tty write permission on or off.
304 * PUBLIC: int cl_omesg __P((SCR *, CL_PRIVATE *, int));
307 cl_omesg(SCR *sp, CL_PRIVATE *clp, int on)
312 /* Find the tty, get the current permissions. */
313 if ((tty = ttyname(STDERR_FILENO)) == NULL) {
315 msgq(sp, M_SYSERR, "stderr");
318 if (stat(tty, &sb) < 0) {
320 msgq(sp, M_SYSERR, "%s", tty);
324 /* Save the original status if it's unknown. */
325 if (clp->tgw == TGW_UNKNOWN)
326 clp->tgw = sb.st_mode & S_IWGRP ? TGW_SET : TGW_UNSET;
328 /* Toggle the permissions. */
330 if (chmod(tty, sb.st_mode | S_IWGRP) < 0) {
333 "046|messages not turned on: %s", tty);
337 if (chmod(tty, sb.st_mode & ~S_IWGRP) < 0) {
340 "045|messages not turned off: %s", tty);
348 * Return the terminal size.
350 * PUBLIC: int cl_ssize __P((SCR *, int, size_t *, size_t *, int *));
353 cl_ssize(SCR *sp, int sigwinch, size_t *rowp, size_t *colp, int *changedp)
360 /* Assume it's changed. */
361 if (changedp != NULL)
368 * Get the screen rows and columns. If the values are wrong, it's
369 * not a big deal -- as soon as the user sets them explicitly the
370 * environment will be set and the screen package will use the new
376 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));