1 /* Id */
2
3 /*
4 * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/types.h>
20
21 #ifdef HAVE_CURSES_H
22 #include <curses.h>
23 #else
24 #include <ncurses.h>
25 #endif
26 #include <fnmatch.h>
27 #include <stdlib.h>
28 #include <string.h>
29 #include <term.h>
30
31 #include "tmux.h"
32
33 void tty_term_override(struct tty_term *, const char *);
34 char *tty_term_strip(const char *);
35
36 struct tty_terms tty_terms = LIST_HEAD_INITIALIZER(tty_terms);
37
38 const struct tty_term_code_entry tty_term_codes[NTTYCODE] = {
39 { TTYC_ACSC, TTYCODE_STRING, "acsc" },
40 { TTYC_AX, TTYCODE_FLAG, "AX" },
41 { TTYC_BEL, TTYCODE_STRING, "bel" },
42 { TTYC_BLINK, TTYCODE_STRING, "blink" },
43 { TTYC_BOLD, TTYCODE_STRING, "bold" },
44 { TTYC_CIVIS, TTYCODE_STRING, "civis" },
45 { TTYC_CLEAR, TTYCODE_STRING, "clear" },
46 { TTYC_CNORM, TTYCODE_STRING, "cnorm" },
47 { TTYC_COLORS, TTYCODE_NUMBER, "colors" },
48 { TTYC_CR, TTYCODE_STRING, "Cr" },
49 { TTYC_CS, TTYCODE_STRING, "Cs" },
50 { TTYC_CSR, TTYCODE_STRING, "csr" },
51 { TTYC_CUB, TTYCODE_STRING, "cub" },
52 { TTYC_CUB1, TTYCODE_STRING, "cub1" },
53 { TTYC_CUD, TTYCODE_STRING, "cud" },
54 { TTYC_CUD1, TTYCODE_STRING, "cud1" },
55 { TTYC_CUF, TTYCODE_STRING, "cuf" },
56 { TTYC_CUF1, TTYCODE_STRING, "cuf1" },
57 { TTYC_CUP, TTYCODE_STRING, "cup" },
58 { TTYC_CUU, TTYCODE_STRING, "cuu" },
59 { TTYC_CUU1, TTYCODE_STRING, "cuu1" },
60 { TTYC_DCH, TTYCODE_STRING, "dch" },
61 { TTYC_DCH1, TTYCODE_STRING, "dch1" },
62 { TTYC_DIM, TTYCODE_STRING, "dim" },
63 { TTYC_DL, TTYCODE_STRING, "dl" },
64 { TTYC_DL1, TTYCODE_STRING, "dl1" },
65 { TTYC_E3, TTYCODE_STRING, "E3" },
66 { TTYC_ECH, TTYCODE_STRING, "ech" },
67 { TTYC_EL, TTYCODE_STRING, "el" },
68 { TTYC_EL1, TTYCODE_STRING, "el1" },
69 { TTYC_ENACS, TTYCODE_STRING, "enacs" },
70 { TTYC_FSL, TTYCODE_STRING, "fsl" },
71 { TTYC_HOME, TTYCODE_STRING, "home" },
72 { TTYC_HPA, TTYCODE_STRING, "hpa" },
73 { TTYC_ICH, TTYCODE_STRING, "ich" },
74 { TTYC_ICH1, TTYCODE_STRING, "ich1" },
75 { TTYC_IL, TTYCODE_STRING, "il" },
76 { TTYC_IL1, TTYCODE_STRING, "il1" },
77 { TTYC_INVIS, TTYCODE_STRING, "invis" },
78 { TTYC_IS1, TTYCODE_STRING, "is1" },
79 { TTYC_IS2, TTYCODE_STRING, "is2" },
80 { TTYC_IS3, TTYCODE_STRING, "is3" },
81 { TTYC_KCBT, TTYCODE_STRING, "kcbt" },
82 { TTYC_KCUB1, TTYCODE_STRING, "kcub1" },
83 { TTYC_KCUD1, TTYCODE_STRING, "kcud1" },
84 { TTYC_KCUF1, TTYCODE_STRING, "kcuf1" },
85 { TTYC_KCUU1, TTYCODE_STRING, "kcuu1" },
86 { TTYC_KDC2, TTYCODE_STRING, "kDC" },
87 { TTYC_KDC3, TTYCODE_STRING, "kDC3" },
88 { TTYC_KDC4, TTYCODE_STRING, "kDC4" },
89 { TTYC_KDC5, TTYCODE_STRING, "kDC5" },
90 { TTYC_KDC6, TTYCODE_STRING, "kDC6" },
91 { TTYC_KDC7, TTYCODE_STRING, "kDC7" },
92 { TTYC_KDCH1, TTYCODE_STRING, "kdch1" },
93 { TTYC_KDN2, TTYCODE_STRING, "kDN" },
94 { TTYC_KDN3, TTYCODE_STRING, "kDN3" },
95 { TTYC_KDN4, TTYCODE_STRING, "kDN4" },
96 { TTYC_KDN5, TTYCODE_STRING, "kDN5" },
97 { TTYC_KDN6, TTYCODE_STRING, "kDN6" },
98 { TTYC_KDN7, TTYCODE_STRING, "kDN7" },
99 { TTYC_KEND, TTYCODE_STRING, "kend" },
100 { TTYC_KEND2, TTYCODE_STRING, "kEND" },
101 { TTYC_KEND3, TTYCODE_STRING, "kEND3" },
102 { TTYC_KEND4, TTYCODE_STRING, "kEND4" },
103 { TTYC_KEND5, TTYCODE_STRING, "kEND5" },
104 { TTYC_KEND6, TTYCODE_STRING, "kEND6" },
105 { TTYC_KEND7, TTYCODE_STRING, "kEND7" },
106 { TTYC_KF1, TTYCODE_STRING, "kf1" },
107 { TTYC_KF10, TTYCODE_STRING, "kf10" },
108 { TTYC_KF11, TTYCODE_STRING, "kf11" },
109 { TTYC_KF12, TTYCODE_STRING, "kf12" },
110 { TTYC_KF13, TTYCODE_STRING, "kf13" },
111 { TTYC_KF14, TTYCODE_STRING, "kf14" },
112 { TTYC_KF15, TTYCODE_STRING, "kf15" },
113 { TTYC_KF16, TTYCODE_STRING, "kf16" },
114 { TTYC_KF17, TTYCODE_STRING, "kf17" },
115 { TTYC_KF18, TTYCODE_STRING, "kf18" },
116 { TTYC_KF19, TTYCODE_STRING, "kf19" },
117 { TTYC_KF2, TTYCODE_STRING, "kf2" },
118 { TTYC_KF20, TTYCODE_STRING, "kf20" },
119 { TTYC_KF3, TTYCODE_STRING, "kf3" },
120 { TTYC_KF4, TTYCODE_STRING, "kf4" },
121 { TTYC_KF5, TTYCODE_STRING, "kf5" },
122 { TTYC_KF6, TTYCODE_STRING, "kf6" },
123 { TTYC_KF7, TTYCODE_STRING, "kf7" },
124 { TTYC_KF8, TTYCODE_STRING, "kf8" },
125 { TTYC_KF9, TTYCODE_STRING, "kf9" },
126 { TTYC_KHOM2, TTYCODE_STRING, "kHOM" },
127 { TTYC_KHOM3, TTYCODE_STRING, "kHOM3" },
128 { TTYC_KHOM4, TTYCODE_STRING, "kHOM4" },
129 { TTYC_KHOM5, TTYCODE_STRING, "kHOM5" },
130 { TTYC_KHOM6, TTYCODE_STRING, "kHOM6" },
131 { TTYC_KHOM7, TTYCODE_STRING, "kHOM7" },
132 { TTYC_KHOME, TTYCODE_STRING, "khome" },
133 { TTYC_KIC2, TTYCODE_STRING, "kIC" },
134 { TTYC_KIC3, TTYCODE_STRING, "kIC3" },
135 { TTYC_KIC4, TTYCODE_STRING, "kIC4" },
136 { TTYC_KIC5, TTYCODE_STRING, "kIC5" },
137 { TTYC_KIC6, TTYCODE_STRING, "kIC6" },
138 { TTYC_KIC7, TTYCODE_STRING, "kIC7" },
139 { TTYC_KICH1, TTYCODE_STRING, "kich1" },
140 { TTYC_KLFT2, TTYCODE_STRING, "kLFT" },
141 { TTYC_KLFT3, TTYCODE_STRING, "kLFT3" },
142 { TTYC_KLFT4, TTYCODE_STRING, "kLFT4" },
143 { TTYC_KLFT5, TTYCODE_STRING, "kLFT5" },
144 { TTYC_KLFT6, TTYCODE_STRING, "kLFT6" },
145 { TTYC_KLFT7, TTYCODE_STRING, "kLFT7" },
146 { TTYC_KMOUS, TTYCODE_STRING, "kmous" },
147 { TTYC_KNP, TTYCODE_STRING, "knp" },
148 { TTYC_KNXT2, TTYCODE_STRING, "kNXT" },
149 { TTYC_KNXT3, TTYCODE_STRING, "kNXT3" },
150 { TTYC_KNXT4, TTYCODE_STRING, "kNXT4" },
151 { TTYC_KNXT5, TTYCODE_STRING, "kNXT5" },
152 { TTYC_KNXT6, TTYCODE_STRING, "kNXT6" },
153 { TTYC_KNXT7, TTYCODE_STRING, "kNXT7" },
154 { TTYC_KPP, TTYCODE_STRING, "kpp" },
155 { TTYC_KPRV2, TTYCODE_STRING, "kPRV" },
156 { TTYC_KPRV3, TTYCODE_STRING, "kPRV3" },
157 { TTYC_KPRV4, TTYCODE_STRING, "kPRV4" },
158 { TTYC_KPRV5, TTYCODE_STRING, "kPRV5" },
159 { TTYC_KPRV6, TTYCODE_STRING, "kPRV6" },
160 { TTYC_KPRV7, TTYCODE_STRING, "kPRV7" },
161 { TTYC_KRIT2, TTYCODE_STRING, "kRIT" },
162 { TTYC_KRIT3, TTYCODE_STRING, "kRIT3" },
163 { TTYC_KRIT4, TTYCODE_STRING, "kRIT4" },
164 { TTYC_KRIT5, TTYCODE_STRING, "kRIT5" },
165 { TTYC_KRIT6, TTYCODE_STRING, "kRIT6" },
166 { TTYC_KRIT7, TTYCODE_STRING, "kRIT7" },
167 { TTYC_KUP2, TTYCODE_STRING, "kUP" },
168 { TTYC_KUP3, TTYCODE_STRING, "kUP3" },
169 { TTYC_KUP4, TTYCODE_STRING, "kUP4" },
170 { TTYC_KUP5, TTYCODE_STRING, "kUP5" },
171 { TTYC_KUP6, TTYCODE_STRING, "kUP6" },
172 { TTYC_KUP7, TTYCODE_STRING, "kUP7" },
173 { TTYC_MS, TTYCODE_STRING, "Ms" },
174 { TTYC_OP, TTYCODE_STRING, "op" },
175 { TTYC_REV, TTYCODE_STRING, "rev" },
176 { TTYC_RI, TTYCODE_STRING, "ri" },
177 { TTYC_RMACS, TTYCODE_STRING, "rmacs" },
178 { TTYC_RMCUP, TTYCODE_STRING, "rmcup" },
179 { TTYC_RMKX, TTYCODE_STRING, "rmkx" },
180 { TTYC_SE, TTYCODE_STRING, "Se" },
181 { TTYC_SETAB, TTYCODE_STRING, "setab" },
182 { TTYC_SETAF, TTYCODE_STRING, "setaf" },
183 { TTYC_SGR0, TTYCODE_STRING, "sgr0" },
184 { TTYC_SITM, TTYCODE_STRING, "sitm" },
185 { TTYC_SMACS, TTYCODE_STRING, "smacs" },
186 { TTYC_SMCUP, TTYCODE_STRING, "smcup" },
187 { TTYC_SMKX, TTYCODE_STRING, "smkx" },
188 { TTYC_SMSO, TTYCODE_STRING, "smso" },
189 { TTYC_SMUL, TTYCODE_STRING, "smul" },
190 { TTYC_SS, TTYCODE_STRING, "Ss" },
191 { TTYC_TSL, TTYCODE_STRING, "tsl" },
192 { TTYC_VPA, TTYCODE_STRING, "vpa" },
193 { TTYC_XENL, TTYCODE_FLAG, "xenl" },
194 { TTYC_XT, TTYCODE_FLAG, "XT" },
195 };
196
197 char *
tty_term_strip(const char * s)198 tty_term_strip(const char *s)
199 {
200 const char *ptr;
201 static char buf[BUFSIZ];
202 size_t len;
203
204 /* Ignore strings with no padding. */
205 if (strchr(s, '$') == NULL)
206 return (xstrdup(s));
207
208 len = 0;
209 for (ptr = s; *ptr != '\0'; ptr++) {
210 if (*ptr == '$' && *(ptr + 1) == '<') {
211 while (*ptr != '\0' && *ptr != '>')
212 ptr++;
213 if (*ptr == '>')
214 ptr++;
215 }
216
217 buf[len++] = *ptr;
218 if (len == (sizeof buf) - 1)
219 break;
220 }
221 buf[len] = '\0';
222
223 return (xstrdup(buf));
224 }
225
226 void
tty_term_override(struct tty_term * term,const char * overrides)227 tty_term_override(struct tty_term *term, const char *overrides)
228 {
229 const struct tty_term_code_entry *ent;
230 struct tty_code *code;
231 char *termnext, *termstr;
232 char *entnext, *entstr;
233 char *s, *ptr, *val;
234 const char *errstr;
235 u_int i;
236 int n, removeflag;
237
238 s = xstrdup(overrides);
239
240 termnext = s;
241 while ((termstr = strsep(&termnext, ",")) != NULL) {
242 entnext = termstr;
243
244 entstr = strsep(&entnext, ":");
245 if (entstr == NULL || entnext == NULL)
246 continue;
247 if (fnmatch(entstr, term->name, 0) != 0)
248 continue;
249 while ((entstr = strsep(&entnext, ":")) != NULL) {
250 if (*entstr == '\0')
251 continue;
252
253 val = NULL;
254 removeflag = 0;
255 if ((ptr = strchr(entstr, '=')) != NULL) {
256 *ptr++ = '\0';
257 val = xstrdup(ptr);
258 if (strunvis(val, ptr) == -1) {
259 free(val);
260 val = xstrdup(ptr);
261 }
262 } else if (entstr[strlen(entstr) - 1] == '@') {
263 entstr[strlen(entstr) - 1] = '\0';
264 removeflag = 1;
265 } else
266 val = xstrdup("");
267
268 log_debug("%s override: %s %s",
269 term->name, entstr, removeflag ? "@" : val);
270 for (i = 0; i < NTTYCODE; i++) {
271 ent = &tty_term_codes[i];
272 if (strcmp(entstr, ent->name) != 0)
273 continue;
274 code = &term->codes[ent->code];
275
276 if (removeflag) {
277 code->type = TTYCODE_NONE;
278 continue;
279 }
280 switch (ent->type) {
281 case TTYCODE_NONE:
282 break;
283 case TTYCODE_STRING:
284 if (code->type == TTYCODE_STRING)
285 free(code->value.string);
286 code->value.string = xstrdup(val);
287 code->type = ent->type;
288 break;
289 case TTYCODE_NUMBER:
290 n = strtonum(val, 0, INT_MAX, &errstr);
291 if (errstr != NULL)
292 break;
293 code->value.number = n;
294 code->type = ent->type;
295 break;
296 case TTYCODE_FLAG:
297 code->value.flag = 1;
298 code->type = ent->type;
299 break;
300 }
301 }
302
303 free(val);
304 }
305 }
306
307 free(s);
308 }
309
310 struct tty_term *
tty_term_find(char * name,int fd,const char * overrides,char ** cause)311 tty_term_find(char *name, int fd, const char *overrides, char **cause)
312 {
313 struct tty_term *term;
314 const struct tty_term_code_entry *ent;
315 struct tty_code *code;
316 u_int i;
317 int n, error;
318 char *s;
319 const char *acs;
320
321 LIST_FOREACH(term, &tty_terms, entry) {
322 if (strcmp(term->name, name) == 0) {
323 term->references++;
324 return (term);
325 }
326 }
327
328 log_debug("new term: %s", name);
329 term = xmalloc(sizeof *term);
330 term->name = xstrdup(name);
331 term->references = 1;
332 term->flags = 0;
333 memset(term->codes, 0, sizeof term->codes);
334 LIST_INSERT_HEAD(&tty_terms, term, entry);
335
336 /* Set up curses terminal. */
337 if (setupterm(name, fd, &error) != OK) {
338 switch (error) {
339 case 1:
340 xasprintf(
341 cause, "can't use hardcopy terminal: %s", name);
342 break;
343 case 0:
344 xasprintf(
345 cause, "missing or unsuitable terminal: %s", name);
346 break;
347 case -1:
348 xasprintf(cause, "can't find terminfo database");
349 break;
350 default:
351 xasprintf(cause, "unknown error");
352 break;
353 }
354 goto error;
355 }
356
357 /* Fill in codes. */
358 for (i = 0; i < NTTYCODE; i++) {
359 ent = &tty_term_codes[i];
360
361 code = &term->codes[ent->code];
362 code->type = TTYCODE_NONE;
363 switch (ent->type) {
364 case TTYCODE_NONE:
365 break;
366 case TTYCODE_STRING:
367 s = tigetstr(ent->name);
368 if (s == NULL || s == (char *) -1)
369 break;
370 code->type = TTYCODE_STRING;
371 code->value.string = tty_term_strip(s);
372 break;
373 case TTYCODE_NUMBER:
374 n = tigetnum(ent->name);
375 if (n == -1 || n == -2)
376 break;
377 code->type = TTYCODE_NUMBER;
378 code->value.number = n;
379 break;
380 case TTYCODE_FLAG:
381 n = tigetflag(ent->name);
382 if (n == -1)
383 break;
384 code->type = TTYCODE_FLAG;
385 code->value.number = n;
386 break;
387 }
388 }
389 tty_term_override(term, overrides);
390
391 /* Delete curses data. */
392 #if !defined(NCURSES_VERSION_MAJOR) || NCURSES_VERSION_MAJOR > 5 || \
393 (NCURSES_VERSION_MAJOR == 5 && NCURSES_VERSION_MINOR > 6)
394 del_curterm(cur_term);
395 #endif
396
397 /* These are always required. */
398 if (!tty_term_has(term, TTYC_CLEAR)) {
399 xasprintf(cause, "terminal does not support clear");
400 goto error;
401 }
402 if (!tty_term_has(term, TTYC_CUP)) {
403 xasprintf(cause, "terminal does not support cup");
404 goto error;
405 }
406
407 /* These can be emulated so one of the two is required. */
408 if (!tty_term_has(term, TTYC_CUD1) && !tty_term_has(term, TTYC_CUD)) {
409 xasprintf(cause, "terminal does not support cud1 or cud");
410 goto error;
411 }
412
413 /* Figure out if we have 256. */
414 if (tty_term_number(term, TTYC_COLORS) == 256)
415 term->flags |= TERM_256COLOURS;
416
417 /*
418 * Terminals without xenl (eat newline glitch) wrap at at $COLUMNS - 1
419 * rather than $COLUMNS (the cursor can never be beyond $COLUMNS - 1).
420 *
421 * This is irritating, most notably because it is impossible to write
422 * to the very bottom-right of the screen without scrolling.
423 *
424 * Flag the terminal here and apply some workarounds in other places to
425 * do the best possible.
426 */
427 if (!tty_term_flag(term, TTYC_XENL))
428 term->flags |= TERM_EARLYWRAP;
429
430 /* Generate ACS table. If none is present, use nearest ASCII. */
431 memset(term->acs, 0, sizeof term->acs);
432 if (tty_term_has(term, TTYC_ACSC))
433 acs = tty_term_string(term, TTYC_ACSC);
434 else
435 acs = "a#j+k+l+m+n+o-p-q-r-s-t+u+v+w+x|y<z>~.";
436 for (; acs[0] != '\0' && acs[1] != '\0'; acs += 2)
437 term->acs[(u_char) acs[0]][0] = acs[1];
438
439 /* On terminals with xterm titles (XT), fill in tsl and fsl. */
440 if (tty_term_flag(term, TTYC_XT) &&
441 !tty_term_has(term, TTYC_TSL) &&
442 !tty_term_has(term, TTYC_FSL)) {
443 code = &term->codes[TTYC_TSL];
444 code->value.string = xstrdup("\033]0;");
445 code->type = TTYCODE_STRING;
446 code = &term->codes[TTYC_FSL];
447 code->value.string = xstrdup("\007");
448 code->type = TTYCODE_STRING;
449 }
450
451 return (term);
452
453 error:
454 tty_term_free(term);
455 return (NULL);
456 }
457
458 void
tty_term_free(struct tty_term * term)459 tty_term_free(struct tty_term *term)
460 {
461 u_int i;
462
463 if (--term->references != 0)
464 return;
465
466 LIST_REMOVE(term, entry);
467
468 for (i = 0; i < NTTYCODE; i++) {
469 if (term->codes[i].type == TTYCODE_STRING)
470 free(term->codes[i].value.string);
471 }
472 free(term->name);
473 free(term);
474 }
475
476 int
tty_term_has(struct tty_term * term,enum tty_code_code code)477 tty_term_has(struct tty_term *term, enum tty_code_code code)
478 {
479 return (term->codes[code].type != TTYCODE_NONE);
480 }
481
482 const char *
tty_term_string(struct tty_term * term,enum tty_code_code code)483 tty_term_string(struct tty_term *term, enum tty_code_code code)
484 {
485 if (!tty_term_has(term, code))
486 return ("");
487 if (term->codes[code].type != TTYCODE_STRING)
488 log_fatalx("not a string: %d", code);
489 return (term->codes[code].value.string);
490 }
491
492 /* No vtparm. Fucking curses. */
493 const char *
tty_term_string1(struct tty_term * term,enum tty_code_code code,int a)494 tty_term_string1(struct tty_term *term, enum tty_code_code code, int a)
495 {
496 return (tparm(tty_term_string(term, code), a, 0, 0, 0, 0, 0, 0, 0, 0));
497 }
498
499 const char *
tty_term_string2(struct tty_term * term,enum tty_code_code code,int a,int b)500 tty_term_string2(struct tty_term *term, enum tty_code_code code, int a, int b)
501 {
502 return (tparm(tty_term_string(term, code), a, b, 0, 0, 0, 0, 0, 0, 0));
503 }
504
505 const char *
tty_term_ptr1(struct tty_term * term,enum tty_code_code code,const void * a)506 tty_term_ptr1(struct tty_term *term, enum tty_code_code code, const void *a)
507 {
508 return (tparm(tty_term_string(term, code), (intptr_t)a, 0, 0, 0, 0, 0, 0, 0, 0));
509 }
510
511 const char *
tty_term_ptr2(struct tty_term * term,enum tty_code_code code,const void * a,const void * b)512 tty_term_ptr2(struct tty_term *term, enum tty_code_code code, const void *a, const void *b)
513 {
514 return (tparm(tty_term_string(term, code), (intptr_t)a, (intptr_t)b, 0, 0, 0, 0, 0, 0, 0));
515 }
516
517 int
tty_term_number(struct tty_term * term,enum tty_code_code code)518 tty_term_number(struct tty_term *term, enum tty_code_code code)
519 {
520 if (!tty_term_has(term, code))
521 return (0);
522 if (term->codes[code].type != TTYCODE_NUMBER)
523 log_fatalx("not a number: %d", code);
524 return (term->codes[code].value.number);
525 }
526
527 int
tty_term_flag(struct tty_term * term,enum tty_code_code code)528 tty_term_flag(struct tty_term *term, enum tty_code_code code)
529 {
530 if (!tty_term_has(term, code))
531 return (0);
532 if (term->codes[code].type != TTYCODE_FLAG)
533 log_fatalx("not a flag: %d", code);
534 return (term->codes[code].value.flag);
535 }
536