tty-term.c revision 1.8
1/* $OpenBSD$ */ 2 3/* 4 * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com> 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#if defined(HAVE_CURSES_H) 22#include <curses.h> 23#elif defined(HAVE_NCURSES_H) 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 33static void tty_term_override(struct tty_term *, const char *); 34static char *tty_term_strip(const char *); 35 36struct tty_terms tty_terms = LIST_HEAD_INITIALIZER(tty_terms); 37 38enum tty_code_type { 39 TTYCODE_NONE = 0, 40 TTYCODE_STRING, 41 TTYCODE_NUMBER, 42 TTYCODE_FLAG, 43}; 44 45struct tty_code { 46 enum tty_code_type type; 47 union { 48 char *string; 49 int number; 50 int flag; 51 } value; 52}; 53 54struct tty_term_code_entry { 55 enum tty_code_type type; 56 const char *name; 57}; 58 59static const struct tty_term_code_entry tty_term_codes[] = { 60 [TTYC_ACSC] = { TTYCODE_STRING, "acsc" }, 61 [TTYC_AX] = { TTYCODE_FLAG, "AX" }, 62 [TTYC_BCE] = { TTYCODE_FLAG, "bce" }, 63 [TTYC_BEL] = { TTYCODE_STRING, "bel" }, 64 [TTYC_BLINK] = { TTYCODE_STRING, "blink" }, 65 [TTYC_BOLD] = { TTYCODE_STRING, "bold" }, 66 [TTYC_CIVIS] = { TTYCODE_STRING, "civis" }, 67 [TTYC_CLEAR] = { TTYCODE_STRING, "clear" }, 68 [TTYC_CNORM] = { TTYCODE_STRING, "cnorm" }, 69 [TTYC_COLORS] = { TTYCODE_NUMBER, "colors" }, 70 [TTYC_CR] = { TTYCODE_STRING, "Cr" }, 71 [TTYC_CS] = { TTYCODE_STRING, "Cs" }, 72 [TTYC_CSR] = { TTYCODE_STRING, "csr" }, 73 [TTYC_CUB] = { TTYCODE_STRING, "cub" }, 74 [TTYC_CUB1] = { TTYCODE_STRING, "cub1" }, 75 [TTYC_CUD] = { TTYCODE_STRING, "cud" }, 76 [TTYC_CUD1] = { TTYCODE_STRING, "cud1" }, 77 [TTYC_CUF] = { TTYCODE_STRING, "cuf" }, 78 [TTYC_CUF1] = { TTYCODE_STRING, "cuf1" }, 79 [TTYC_CUP] = { TTYCODE_STRING, "cup" }, 80 [TTYC_CUU] = { TTYCODE_STRING, "cuu" }, 81 [TTYC_CUU1] = { TTYCODE_STRING, "cuu1" }, 82 [TTYC_CVVIS] = { TTYCODE_STRING, "cvvis" }, 83 [TTYC_DCH] = { TTYCODE_STRING, "dch" }, 84 [TTYC_DCH1] = { TTYCODE_STRING, "dch1" }, 85 [TTYC_DIM] = { TTYCODE_STRING, "dim" }, 86 [TTYC_DL] = { TTYCODE_STRING, "dl" }, 87 [TTYC_DL1] = { TTYCODE_STRING, "dl1" }, 88 [TTYC_E3] = { TTYCODE_STRING, "E3" }, 89 [TTYC_ECH] = { TTYCODE_STRING, "ech" }, 90 [TTYC_ED] = { TTYCODE_STRING, "ed" }, 91 [TTYC_EL] = { TTYCODE_STRING, "el" }, 92 [TTYC_EL1] = { TTYCODE_STRING, "el1" }, 93 [TTYC_ENACS] = { TTYCODE_STRING, "enacs" }, 94 [TTYC_FSL] = { TTYCODE_STRING, "fsl" }, 95 [TTYC_HOME] = { TTYCODE_STRING, "home" }, 96 [TTYC_HPA] = { TTYCODE_STRING, "hpa" }, 97 [TTYC_ICH] = { TTYCODE_STRING, "ich" }, 98 [TTYC_ICH1] = { TTYCODE_STRING, "ich1" }, 99 [TTYC_IL] = { TTYCODE_STRING, "il" }, 100 [TTYC_IL1] = { TTYCODE_STRING, "il1" }, 101 [TTYC_INDN] = { TTYCODE_STRING, "indn" }, 102 [TTYC_INVIS] = { TTYCODE_STRING, "invis" }, 103 [TTYC_KCBT] = { TTYCODE_STRING, "kcbt" }, 104 [TTYC_KCUB1] = { TTYCODE_STRING, "kcub1" }, 105 [TTYC_KCUD1] = { TTYCODE_STRING, "kcud1" }, 106 [TTYC_KCUF1] = { TTYCODE_STRING, "kcuf1" }, 107 [TTYC_KCUU1] = { TTYCODE_STRING, "kcuu1" }, 108 [TTYC_KDC2] = { TTYCODE_STRING, "kDC" }, 109 [TTYC_KDC3] = { TTYCODE_STRING, "kDC3" }, 110 [TTYC_KDC4] = { TTYCODE_STRING, "kDC4" }, 111 [TTYC_KDC5] = { TTYCODE_STRING, "kDC5" }, 112 [TTYC_KDC6] = { TTYCODE_STRING, "kDC6" }, 113 [TTYC_KDC7] = { TTYCODE_STRING, "kDC7" }, 114 [TTYC_KDCH1] = { TTYCODE_STRING, "kdch1" }, 115 [TTYC_KDN2] = { TTYCODE_STRING, "kDN" }, 116 [TTYC_KDN3] = { TTYCODE_STRING, "kDN3" }, 117 [TTYC_KDN4] = { TTYCODE_STRING, "kDN4" }, 118 [TTYC_KDN5] = { TTYCODE_STRING, "kDN5" }, 119 [TTYC_KDN6] = { TTYCODE_STRING, "kDN6" }, 120 [TTYC_KDN7] = { TTYCODE_STRING, "kDN7" }, 121 [TTYC_KEND] = { TTYCODE_STRING, "kend" }, 122 [TTYC_KEND2] = { TTYCODE_STRING, "kEND" }, 123 [TTYC_KEND3] = { TTYCODE_STRING, "kEND3" }, 124 [TTYC_KEND4] = { TTYCODE_STRING, "kEND4" }, 125 [TTYC_KEND5] = { TTYCODE_STRING, "kEND5" }, 126 [TTYC_KEND6] = { TTYCODE_STRING, "kEND6" }, 127 [TTYC_KEND7] = { TTYCODE_STRING, "kEND7" }, 128 [TTYC_KF1] = { TTYCODE_STRING, "kf1" }, 129 [TTYC_KF10] = { TTYCODE_STRING, "kf10" }, 130 [TTYC_KF11] = { TTYCODE_STRING, "kf11" }, 131 [TTYC_KF12] = { TTYCODE_STRING, "kf12" }, 132 [TTYC_KF13] = { TTYCODE_STRING, "kf13" }, 133 [TTYC_KF14] = { TTYCODE_STRING, "kf14" }, 134 [TTYC_KF15] = { TTYCODE_STRING, "kf15" }, 135 [TTYC_KF16] = { TTYCODE_STRING, "kf16" }, 136 [TTYC_KF17] = { TTYCODE_STRING, "kf17" }, 137 [TTYC_KF18] = { TTYCODE_STRING, "kf18" }, 138 [TTYC_KF19] = { TTYCODE_STRING, "kf19" }, 139 [TTYC_KF2] = { TTYCODE_STRING, "kf2" }, 140 [TTYC_KF20] = { TTYCODE_STRING, "kf20" }, 141 [TTYC_KF21] = { TTYCODE_STRING, "kf21" }, 142 [TTYC_KF22] = { TTYCODE_STRING, "kf22" }, 143 [TTYC_KF23] = { TTYCODE_STRING, "kf23" }, 144 [TTYC_KF24] = { TTYCODE_STRING, "kf24" }, 145 [TTYC_KF25] = { TTYCODE_STRING, "kf25" }, 146 [TTYC_KF26] = { TTYCODE_STRING, "kf26" }, 147 [TTYC_KF27] = { TTYCODE_STRING, "kf27" }, 148 [TTYC_KF28] = { TTYCODE_STRING, "kf28" }, 149 [TTYC_KF29] = { TTYCODE_STRING, "kf29" }, 150 [TTYC_KF3] = { TTYCODE_STRING, "kf3" }, 151 [TTYC_KF30] = { TTYCODE_STRING, "kf30" }, 152 [TTYC_KF31] = { TTYCODE_STRING, "kf31" }, 153 [TTYC_KF32] = { TTYCODE_STRING, "kf32" }, 154 [TTYC_KF33] = { TTYCODE_STRING, "kf33" }, 155 [TTYC_KF34] = { TTYCODE_STRING, "kf34" }, 156 [TTYC_KF35] = { TTYCODE_STRING, "kf35" }, 157 [TTYC_KF36] = { TTYCODE_STRING, "kf36" }, 158 [TTYC_KF37] = { TTYCODE_STRING, "kf37" }, 159 [TTYC_KF38] = { TTYCODE_STRING, "kf38" }, 160 [TTYC_KF39] = { TTYCODE_STRING, "kf39" }, 161 [TTYC_KF4] = { TTYCODE_STRING, "kf4" }, 162 [TTYC_KF40] = { TTYCODE_STRING, "kf40" }, 163 [TTYC_KF41] = { TTYCODE_STRING, "kf41" }, 164 [TTYC_KF42] = { TTYCODE_STRING, "kf42" }, 165 [TTYC_KF43] = { TTYCODE_STRING, "kf43" }, 166 [TTYC_KF44] = { TTYCODE_STRING, "kf44" }, 167 [TTYC_KF45] = { TTYCODE_STRING, "kf45" }, 168 [TTYC_KF46] = { TTYCODE_STRING, "kf46" }, 169 [TTYC_KF47] = { TTYCODE_STRING, "kf47" }, 170 [TTYC_KF48] = { TTYCODE_STRING, "kf48" }, 171 [TTYC_KF49] = { TTYCODE_STRING, "kf49" }, 172 [TTYC_KF5] = { TTYCODE_STRING, "kf5" }, 173 [TTYC_KF50] = { TTYCODE_STRING, "kf50" }, 174 [TTYC_KF51] = { TTYCODE_STRING, "kf51" }, 175 [TTYC_KF52] = { TTYCODE_STRING, "kf52" }, 176 [TTYC_KF53] = { TTYCODE_STRING, "kf53" }, 177 [TTYC_KF54] = { TTYCODE_STRING, "kf54" }, 178 [TTYC_KF55] = { TTYCODE_STRING, "kf55" }, 179 [TTYC_KF56] = { TTYCODE_STRING, "kf56" }, 180 [TTYC_KF57] = { TTYCODE_STRING, "kf57" }, 181 [TTYC_KF58] = { TTYCODE_STRING, "kf58" }, 182 [TTYC_KF59] = { TTYCODE_STRING, "kf59" }, 183 [TTYC_KF6] = { TTYCODE_STRING, "kf6" }, 184 [TTYC_KF60] = { TTYCODE_STRING, "kf60" }, 185 [TTYC_KF61] = { TTYCODE_STRING, "kf61" }, 186 [TTYC_KF62] = { TTYCODE_STRING, "kf62" }, 187 [TTYC_KF63] = { TTYCODE_STRING, "kf63" }, 188 [TTYC_KF7] = { TTYCODE_STRING, "kf7" }, 189 [TTYC_KF8] = { TTYCODE_STRING, "kf8" }, 190 [TTYC_KF9] = { TTYCODE_STRING, "kf9" }, 191 [TTYC_KHOM2] = { TTYCODE_STRING, "kHOM" }, 192 [TTYC_KHOM3] = { TTYCODE_STRING, "kHOM3" }, 193 [TTYC_KHOM4] = { TTYCODE_STRING, "kHOM4" }, 194 [TTYC_KHOM5] = { TTYCODE_STRING, "kHOM5" }, 195 [TTYC_KHOM6] = { TTYCODE_STRING, "kHOM6" }, 196 [TTYC_KHOM7] = { TTYCODE_STRING, "kHOM7" }, 197 [TTYC_KHOME] = { TTYCODE_STRING, "khome" }, 198 [TTYC_KIC2] = { TTYCODE_STRING, "kIC" }, 199 [TTYC_KIC3] = { TTYCODE_STRING, "kIC3" }, 200 [TTYC_KIC4] = { TTYCODE_STRING, "kIC4" }, 201 [TTYC_KIC5] = { TTYCODE_STRING, "kIC5" }, 202 [TTYC_KIC6] = { TTYCODE_STRING, "kIC6" }, 203 [TTYC_KIC7] = { TTYCODE_STRING, "kIC7" }, 204 [TTYC_KICH1] = { TTYCODE_STRING, "kich1" }, 205 [TTYC_KLFT2] = { TTYCODE_STRING, "kLFT" }, 206 [TTYC_KLFT3] = { TTYCODE_STRING, "kLFT3" }, 207 [TTYC_KLFT4] = { TTYCODE_STRING, "kLFT4" }, 208 [TTYC_KLFT5] = { TTYCODE_STRING, "kLFT5" }, 209 [TTYC_KLFT6] = { TTYCODE_STRING, "kLFT6" }, 210 [TTYC_KLFT7] = { TTYCODE_STRING, "kLFT7" }, 211 [TTYC_KMOUS] = { TTYCODE_STRING, "kmous" }, 212 [TTYC_KNP] = { TTYCODE_STRING, "knp" }, 213 [TTYC_KNXT2] = { TTYCODE_STRING, "kNXT" }, 214 [TTYC_KNXT3] = { TTYCODE_STRING, "kNXT3" }, 215 [TTYC_KNXT4] = { TTYCODE_STRING, "kNXT4" }, 216 [TTYC_KNXT5] = { TTYCODE_STRING, "kNXT5" }, 217 [TTYC_KNXT6] = { TTYCODE_STRING, "kNXT6" }, 218 [TTYC_KNXT7] = { TTYCODE_STRING, "kNXT7" }, 219 [TTYC_KPP] = { TTYCODE_STRING, "kpp" }, 220 [TTYC_KPRV2] = { TTYCODE_STRING, "kPRV" }, 221 [TTYC_KPRV3] = { TTYCODE_STRING, "kPRV3" }, 222 [TTYC_KPRV4] = { TTYCODE_STRING, "kPRV4" }, 223 [TTYC_KPRV5] = { TTYCODE_STRING, "kPRV5" }, 224 [TTYC_KPRV6] = { TTYCODE_STRING, "kPRV6" }, 225 [TTYC_KPRV7] = { TTYCODE_STRING, "kPRV7" }, 226 [TTYC_KRIT2] = { TTYCODE_STRING, "kRIT" }, 227 [TTYC_KRIT3] = { TTYCODE_STRING, "kRIT3" }, 228 [TTYC_KRIT4] = { TTYCODE_STRING, "kRIT4" }, 229 [TTYC_KRIT5] = { TTYCODE_STRING, "kRIT5" }, 230 [TTYC_KRIT6] = { TTYCODE_STRING, "kRIT6" }, 231 [TTYC_KRIT7] = { TTYCODE_STRING, "kRIT7" }, 232 [TTYC_KUP2] = { TTYCODE_STRING, "kUP" }, 233 [TTYC_KUP3] = { TTYCODE_STRING, "kUP3" }, 234 [TTYC_KUP4] = { TTYCODE_STRING, "kUP4" }, 235 [TTYC_KUP5] = { TTYCODE_STRING, "kUP5" }, 236 [TTYC_KUP6] = { TTYCODE_STRING, "kUP6" }, 237 [TTYC_KUP7] = { TTYCODE_STRING, "kUP7" }, 238 [TTYC_MS] = { TTYCODE_STRING, "Ms" }, 239 [TTYC_OP] = { TTYCODE_STRING, "op" }, 240 [TTYC_REV] = { TTYCODE_STRING, "rev" }, 241 [TTYC_RI] = { TTYCODE_STRING, "ri" }, 242 [TTYC_RMACS] = { TTYCODE_STRING, "rmacs" }, 243 [TTYC_RMCUP] = { TTYCODE_STRING, "rmcup" }, 244 [TTYC_RMKX] = { TTYCODE_STRING, "rmkx" }, 245 [TTYC_SE] = { TTYCODE_STRING, "Se" }, 246 [TTYC_SETAB] = { TTYCODE_STRING, "setab" }, 247 [TTYC_SETAF] = { TTYCODE_STRING, "setaf" }, 248 [TTYC_SGR0] = { TTYCODE_STRING, "sgr0" }, 249 [TTYC_SITM] = { TTYCODE_STRING, "sitm" }, 250 [TTYC_SMACS] = { TTYCODE_STRING, "smacs" }, 251 [TTYC_SMCUP] = { TTYCODE_STRING, "smcup" }, 252 [TTYC_SMKX] = { TTYCODE_STRING, "smkx" }, 253 [TTYC_SMSO] = { TTYCODE_STRING, "smso" }, 254 [TTYC_SMUL] = { TTYCODE_STRING, "smul" }, 255 [TTYC_SMXX] = { TTYCODE_STRING, "smxx" }, 256 [TTYC_SS] = { TTYCODE_STRING, "Ss" }, 257 [TTYC_TC] = { TTYCODE_FLAG, "Tc" }, 258 [TTYC_TSL] = { TTYCODE_STRING, "tsl" }, 259 [TTYC_VPA] = { TTYCODE_STRING, "vpa" }, 260 [TTYC_XENL] = { TTYCODE_FLAG, "xenl" }, 261 [TTYC_XT] = { TTYCODE_FLAG, "XT" }, 262}; 263 264u_int 265tty_term_ncodes(void) 266{ 267 return (nitems(tty_term_codes)); 268} 269 270static char * 271tty_term_strip(const char *s) 272{ 273 const char *ptr; 274 static char buf[BUFSIZ]; 275 size_t len; 276 277 /* Ignore strings with no padding. */ 278 if (strchr(s, '$') == NULL) 279 return (xstrdup(s)); 280 281 len = 0; 282 for (ptr = s; *ptr != '\0'; ptr++) { 283 if (*ptr == '$' && *(ptr + 1) == '<') { 284 while (*ptr != '\0' && *ptr != '>') 285 ptr++; 286 if (*ptr == '>') 287 ptr++; 288 } 289 290 buf[len++] = *ptr; 291 if (len == (sizeof buf) - 1) 292 break; 293 } 294 buf[len] = '\0'; 295 296 return (xstrdup(buf)); 297} 298 299static void 300tty_term_override(struct tty_term *term, const char *override) 301{ 302 const struct tty_term_code_entry *ent; 303 struct tty_code *code; 304 char *next, *s, *copy, *cp, *value; 305 const char *errstr; 306 u_int i; 307 int n, remove; 308 309 copy = next = xstrdup(override); 310 311 s = strsep(&next, ":"); 312 if (s == NULL || next == NULL || fnmatch(s, term->name, 0) != 0) { 313 free(copy); 314 return; 315 } 316 317 while ((s = strsep(&next, ":")) != NULL) { 318 if (*s == '\0') 319 continue; 320 value = NULL; 321 322 remove = 0; 323 if ((cp = strchr(s, '=')) != NULL) { 324 *cp++ = '\0'; 325 value = xstrdup(cp); 326 if (strunvis(value, cp) == -1) { 327 free(value); 328 value = xstrdup(cp); 329 } 330 } else if (s[strlen(s) - 1] == '@') { 331 s[strlen(s) - 1] = '\0'; 332 remove = 1; 333 } else 334 value = xstrdup(""); 335 336 if (remove) 337 log_debug("%s override: %s@", term->name, s); 338 else 339 log_debug("%s override: %s=%s", term->name, s, value); 340 341 for (i = 0; i < tty_term_ncodes(); i++) { 342 ent = &tty_term_codes[i]; 343 if (strcmp(s, ent->name) != 0) 344 continue; 345 code = &term->codes[i]; 346 347 if (remove) { 348 code->type = TTYCODE_NONE; 349 continue; 350 } 351 switch (ent->type) { 352 case TTYCODE_NONE: 353 break; 354 case TTYCODE_STRING: 355 if (code->type == TTYCODE_STRING) 356 free(code->value.string); 357 code->value.string = xstrdup(value); 358 code->type = ent->type; 359 break; 360 case TTYCODE_NUMBER: 361 n = strtonum(value, 0, INT_MAX, &errstr); 362 if (errstr != NULL) 363 break; 364 code->value.number = n; 365 code->type = ent->type; 366 break; 367 case TTYCODE_FLAG: 368 code->value.flag = 1; 369 code->type = ent->type; 370 break; 371 } 372 } 373 374 free(value); 375 } 376 free(s); 377} 378 379struct tty_term * 380tty_term_find(char *name, int fd, char **cause) 381{ 382 struct tty_term *term; 383 const struct tty_term_code_entry *ent; 384 struct tty_code *code; 385 struct options_entry *o; 386 u_int size, i; 387 int n, error; 388 const char *s, *acs; 389 390 LIST_FOREACH(term, &tty_terms, entry) { 391 if (strcmp(term->name, name) == 0) { 392 term->references++; 393 return (term); 394 } 395 } 396 397 log_debug("new term: %s", name); 398 term = xmalloc(sizeof *term); 399 term->name = xstrdup(name); 400 term->references = 1; 401 term->flags = 0; 402 term->codes = xcalloc(tty_term_ncodes(), sizeof *term->codes); 403 LIST_INSERT_HEAD(&tty_terms, term, entry); 404 405 /* Set up curses terminal. */ 406 if (setupterm(name, fd, &error) != OK) { 407 switch (error) { 408 case 1: 409 xasprintf(cause, "can't use hardcopy terminal: %s", 410 name); 411 break; 412 case 0: 413 xasprintf(cause, "missing or unsuitable terminal: %s", 414 name); 415 break; 416 case -1: 417 xasprintf(cause, "can't find terminfo database"); 418 break; 419 default: 420 xasprintf(cause, "unknown error"); 421 break; 422 } 423 goto error; 424 } 425 426 /* Fill in codes. */ 427 for (i = 0; i < tty_term_ncodes(); i++) { 428 ent = &tty_term_codes[i]; 429 430 code = &term->codes[i]; 431 code->type = TTYCODE_NONE; 432 switch (ent->type) { 433 case TTYCODE_NONE: 434 break; 435 case TTYCODE_STRING: 436 s = tigetstr(ent->name); 437 if (s == NULL || s == (char *) -1) 438 break; 439 code->type = TTYCODE_STRING; 440 code->value.string = tty_term_strip(s); 441 break; 442 case TTYCODE_NUMBER: 443 n = tigetnum(ent->name); 444 if (n == -1 || n == -2) 445 break; 446 code->type = TTYCODE_NUMBER; 447 code->value.number = n; 448 break; 449 case TTYCODE_FLAG: 450 n = tigetflag(ent->name); 451 if (n == -1) 452 break; 453 code->type = TTYCODE_FLAG; 454 code->value.flag = n; 455 break; 456 } 457 } 458 459 /* Apply terminal overrides. */ 460 o = options_get_only(global_options, "terminal-overrides"); 461 if (options_array_size(o, &size) != -1) { 462 for (i = 0; i < size; i++) { 463 s = options_array_get(o, i); 464 if (s != NULL) 465 tty_term_override(term, s); 466 } 467 } 468 469 /* Delete curses data. */ 470#if !defined(NCURSES_VERSION_MAJOR) || NCURSES_VERSION_MAJOR > 5 || \ 471 (NCURSES_VERSION_MAJOR == 5 && NCURSES_VERSION_MINOR > 6) 472 del_curterm(cur_term); 473#endif 474 475 /* These are always required. */ 476 if (!tty_term_has(term, TTYC_CLEAR)) { 477 xasprintf(cause, "terminal does not support clear"); 478 goto error; 479 } 480 if (!tty_term_has(term, TTYC_CUP)) { 481 xasprintf(cause, "terminal does not support cup"); 482 goto error; 483 } 484 485 /* These can be emulated so one of the two is required. */ 486 if (!tty_term_has(term, TTYC_CUD1) && !tty_term_has(term, TTYC_CUD)) { 487 xasprintf(cause, "terminal does not support cud1 or cud"); 488 goto error; 489 } 490 491 /* Figure out if we have 256. */ 492 if (tty_term_number(term, TTYC_COLORS) == 256) 493 term->flags |= TERM_256COLOURS; 494 495 /* 496 * Terminals without xenl (eat newline glitch) wrap at at $COLUMNS - 1 497 * rather than $COLUMNS (the cursor can never be beyond $COLUMNS - 1). 498 * 499 * This is irritating, most notably because it is impossible to write 500 * to the very bottom-right of the screen without scrolling. 501 * 502 * Flag the terminal here and apply some workarounds in other places to 503 * do the best possible. 504 */ 505 if (!tty_term_flag(term, TTYC_XENL)) 506 term->flags |= TERM_EARLYWRAP; 507 508 /* Generate ACS table. If none is present, use nearest ASCII. */ 509 memset(term->acs, 0, sizeof term->acs); 510 if (tty_term_has(term, TTYC_ACSC)) 511 acs = tty_term_string(term, TTYC_ACSC); 512 else 513 acs = "a#j+k+l+m+n+o-p-q-r-s-t+u+v+w+x|y<z>~."; 514 for (; acs[0] != '\0' && acs[1] != '\0'; acs += 2) 515 term->acs[(u_char) acs[0]][0] = acs[1]; 516 517 /* On terminals with xterm titles (XT), fill in tsl and fsl. */ 518 if (tty_term_flag(term, TTYC_XT) && 519 !tty_term_has(term, TTYC_TSL) && 520 !tty_term_has(term, TTYC_FSL)) { 521 code = &term->codes[TTYC_TSL]; 522 code->value.string = xstrdup("\033]0;"); 523 code->type = TTYCODE_STRING; 524 code = &term->codes[TTYC_FSL]; 525 code->value.string = xstrdup("\007"); 526 code->type = TTYCODE_STRING; 527 } 528 529 return (term); 530 531error: 532 tty_term_free(term); 533 return (NULL); 534} 535 536void 537tty_term_free(struct tty_term *term) 538{ 539 u_int i; 540 541 if (--term->references != 0) 542 return; 543 544 LIST_REMOVE(term, entry); 545 546 for (i = 0; i < tty_term_ncodes(); i++) { 547 if (term->codes[i].type == TTYCODE_STRING) 548 free(term->codes[i].value.string); 549 } 550 free(term->codes); 551 552 free(term->name); 553 free(term); 554} 555 556int 557tty_term_has(struct tty_term *term, enum tty_code_code code) 558{ 559 return (term->codes[code].type != TTYCODE_NONE); 560} 561 562const char * 563tty_term_string(struct tty_term *term, enum tty_code_code code) 564{ 565 if (!tty_term_has(term, code)) 566 return (""); 567 if (term->codes[code].type != TTYCODE_STRING) 568 fatalx("not a string: %d", code); 569 return (term->codes[code].value.string); 570} 571 572const char * 573tty_term_string1(struct tty_term *term, enum tty_code_code code, int a) 574{ 575 return (tparm(tty_term_string(term, code), a, 0, 0, 0, 0, 0, 0, 0, 0)); 576} 577 578const char * 579tty_term_string2(struct tty_term *term, enum tty_code_code code, int a, int b) 580{ 581 return (tparm(tty_term_string(term, code), a, b, 0, 0, 0, 0, 0, 0, 0)); 582} 583 584const char * 585tty_term_ptr1(struct tty_term *term, enum tty_code_code code, const void *a) 586{ 587 return (tparm(tty_term_string(term, code), (intptr_t)a, 0, 0, 0, 0, 0, 0, 0, 0)); 588} 589 590const char * 591tty_term_ptr2(struct tty_term *term, enum tty_code_code code, const void *a, 592 const void *b) 593{ 594 return (tparm(tty_term_string(term, code), (intptr_t)a, (intptr_t)b, 0, 0, 0, 0, 0, 0, 0)); 595} 596 597int 598tty_term_number(struct tty_term *term, enum tty_code_code code) 599{ 600 if (!tty_term_has(term, code)) 601 return (0); 602 if (term->codes[code].type != TTYCODE_NUMBER) 603 fatalx("not a number: %d", code); 604 return (term->codes[code].value.number); 605} 606 607int 608tty_term_flag(struct tty_term *term, enum tty_code_code code) 609{ 610 if (!tty_term_has(term, code)) 611 return (0); 612 if (term->codes[code].type != TTYCODE_FLAG) 613 fatalx("not a flag: %d", code); 614 return (term->codes[code].value.flag); 615} 616 617const char * 618tty_term_describe(struct tty_term *term, enum tty_code_code code) 619{ 620 static char s[256]; 621 char out[128]; 622 623 switch (term->codes[code].type) { 624 case TTYCODE_NONE: 625 xsnprintf(s, sizeof s, "%4u: %s: [missing]", 626 code, tty_term_codes[code].name); 627 break; 628 case TTYCODE_STRING: 629 strnvis(out, sizeof out, term->codes[code].value.string, 630 VIS_OCTAL|VIS_TAB|VIS_NL); 631 xsnprintf(s, sizeof s, "%4u: %s: (string) %s", 632 code, tty_term_codes[code].name, 633 out); 634 break; 635 case TTYCODE_NUMBER: 636 xsnprintf(s, sizeof s, "%4u: %s: (number) %d", 637 code, tty_term_codes[code].name, 638 term->codes[code].value.number); 639 break; 640 case TTYCODE_FLAG: 641 xsnprintf(s, sizeof s, "%4u: %s: (flag) %s", 642 code, tty_term_codes[code].name, 643 term->codes[code].value.flag ? "true" : "false"); 644 break; 645 } 646 return (s); 647} 648