tty-term.c revision 1.7
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 33void tty_term_override(struct tty_term *, const char *); 34char *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 59const 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_EL] = { TTYCODE_STRING, "el" }, 91 [TTYC_EL1] = { TTYCODE_STRING, "el1" }, 92 [TTYC_ENACS] = { TTYCODE_STRING, "enacs" }, 93 [TTYC_FSL] = { TTYCODE_STRING, "fsl" }, 94 [TTYC_HOME] = { TTYCODE_STRING, "home" }, 95 [TTYC_HPA] = { TTYCODE_STRING, "hpa" }, 96 [TTYC_ICH] = { TTYCODE_STRING, "ich" }, 97 [TTYC_ICH1] = { TTYCODE_STRING, "ich1" }, 98 [TTYC_IL] = { TTYCODE_STRING, "il" }, 99 [TTYC_IL1] = { TTYCODE_STRING, "il1" }, 100 [TTYC_INVIS] = { TTYCODE_STRING, "invis" }, 101 [TTYC_IS1] = { TTYCODE_STRING, "is1" }, 102 [TTYC_IS2] = { TTYCODE_STRING, "is2" }, 103 [TTYC_IS3] = { TTYCODE_STRING, "is3" }, 104 [TTYC_KCBT] = { TTYCODE_STRING, "kcbt" }, 105 [TTYC_KCUB1] = { TTYCODE_STRING, "kcub1" }, 106 [TTYC_KCUD1] = { TTYCODE_STRING, "kcud1" }, 107 [TTYC_KCUF1] = { TTYCODE_STRING, "kcuf1" }, 108 [TTYC_KCUU1] = { TTYCODE_STRING, "kcuu1" }, 109 [TTYC_KDC2] = { TTYCODE_STRING, "kDC" }, 110 [TTYC_KDC3] = { TTYCODE_STRING, "kDC3" }, 111 [TTYC_KDC4] = { TTYCODE_STRING, "kDC4" }, 112 [TTYC_KDC5] = { TTYCODE_STRING, "kDC5" }, 113 [TTYC_KDC6] = { TTYCODE_STRING, "kDC6" }, 114 [TTYC_KDC7] = { TTYCODE_STRING, "kDC7" }, 115 [TTYC_KDCH1] = { TTYCODE_STRING, "kdch1" }, 116 [TTYC_KDN2] = { TTYCODE_STRING, "kDN" }, 117 [TTYC_KDN3] = { TTYCODE_STRING, "kDN3" }, 118 [TTYC_KDN4] = { TTYCODE_STRING, "kDN4" }, 119 [TTYC_KDN5] = { TTYCODE_STRING, "kDN5" }, 120 [TTYC_KDN6] = { TTYCODE_STRING, "kDN6" }, 121 [TTYC_KDN7] = { TTYCODE_STRING, "kDN7" }, 122 [TTYC_KEND] = { TTYCODE_STRING, "kend" }, 123 [TTYC_KEND2] = { TTYCODE_STRING, "kEND" }, 124 [TTYC_KEND3] = { TTYCODE_STRING, "kEND3" }, 125 [TTYC_KEND4] = { TTYCODE_STRING, "kEND4" }, 126 [TTYC_KEND5] = { TTYCODE_STRING, "kEND5" }, 127 [TTYC_KEND6] = { TTYCODE_STRING, "kEND6" }, 128 [TTYC_KEND7] = { TTYCODE_STRING, "kEND7" }, 129 [TTYC_KF1] = { TTYCODE_STRING, "kf1" }, 130 [TTYC_KF10] = { TTYCODE_STRING, "kf10" }, 131 [TTYC_KF11] = { TTYCODE_STRING, "kf11" }, 132 [TTYC_KF12] = { TTYCODE_STRING, "kf12" }, 133 [TTYC_KF13] = { TTYCODE_STRING, "kf13" }, 134 [TTYC_KF14] = { TTYCODE_STRING, "kf14" }, 135 [TTYC_KF15] = { TTYCODE_STRING, "kf15" }, 136 [TTYC_KF16] = { TTYCODE_STRING, "kf16" }, 137 [TTYC_KF17] = { TTYCODE_STRING, "kf17" }, 138 [TTYC_KF18] = { TTYCODE_STRING, "kf18" }, 139 [TTYC_KF19] = { TTYCODE_STRING, "kf19" }, 140 [TTYC_KF2] = { TTYCODE_STRING, "kf2" }, 141 [TTYC_KF20] = { TTYCODE_STRING, "kf20" }, 142 [TTYC_KF21] = { TTYCODE_STRING, "kf21" }, 143 [TTYC_KF22] = { TTYCODE_STRING, "kf22" }, 144 [TTYC_KF23] = { TTYCODE_STRING, "kf23" }, 145 [TTYC_KF24] = { TTYCODE_STRING, "kf24" }, 146 [TTYC_KF25] = { TTYCODE_STRING, "kf25" }, 147 [TTYC_KF26] = { TTYCODE_STRING, "kf26" }, 148 [TTYC_KF27] = { TTYCODE_STRING, "kf27" }, 149 [TTYC_KF28] = { TTYCODE_STRING, "kf28" }, 150 [TTYC_KF29] = { TTYCODE_STRING, "kf29" }, 151 [TTYC_KF3] = { TTYCODE_STRING, "kf3" }, 152 [TTYC_KF30] = { TTYCODE_STRING, "kf30" }, 153 [TTYC_KF31] = { TTYCODE_STRING, "kf31" }, 154 [TTYC_KF32] = { TTYCODE_STRING, "kf32" }, 155 [TTYC_KF33] = { TTYCODE_STRING, "kf33" }, 156 [TTYC_KF34] = { TTYCODE_STRING, "kf34" }, 157 [TTYC_KF35] = { TTYCODE_STRING, "kf35" }, 158 [TTYC_KF36] = { TTYCODE_STRING, "kf36" }, 159 [TTYC_KF37] = { TTYCODE_STRING, "kf37" }, 160 [TTYC_KF38] = { TTYCODE_STRING, "kf38" }, 161 [TTYC_KF39] = { TTYCODE_STRING, "kf39" }, 162 [TTYC_KF4] = { TTYCODE_STRING, "kf4" }, 163 [TTYC_KF40] = { TTYCODE_STRING, "kf40" }, 164 [TTYC_KF41] = { TTYCODE_STRING, "kf41" }, 165 [TTYC_KF42] = { TTYCODE_STRING, "kf42" }, 166 [TTYC_KF43] = { TTYCODE_STRING, "kf43" }, 167 [TTYC_KF44] = { TTYCODE_STRING, "kf44" }, 168 [TTYC_KF45] = { TTYCODE_STRING, "kf45" }, 169 [TTYC_KF46] = { TTYCODE_STRING, "kf46" }, 170 [TTYC_KF47] = { TTYCODE_STRING, "kf47" }, 171 [TTYC_KF48] = { TTYCODE_STRING, "kf48" }, 172 [TTYC_KF49] = { TTYCODE_STRING, "kf49" }, 173 [TTYC_KF5] = { TTYCODE_STRING, "kf5" }, 174 [TTYC_KF50] = { TTYCODE_STRING, "kf50" }, 175 [TTYC_KF51] = { TTYCODE_STRING, "kf51" }, 176 [TTYC_KF52] = { TTYCODE_STRING, "kf52" }, 177 [TTYC_KF53] = { TTYCODE_STRING, "kf53" }, 178 [TTYC_KF54] = { TTYCODE_STRING, "kf54" }, 179 [TTYC_KF55] = { TTYCODE_STRING, "kf55" }, 180 [TTYC_KF56] = { TTYCODE_STRING, "kf56" }, 181 [TTYC_KF57] = { TTYCODE_STRING, "kf57" }, 182 [TTYC_KF58] = { TTYCODE_STRING, "kf58" }, 183 [TTYC_KF59] = { TTYCODE_STRING, "kf59" }, 184 [TTYC_KF6] = { TTYCODE_STRING, "kf6" }, 185 [TTYC_KF60] = { TTYCODE_STRING, "kf60" }, 186 [TTYC_KF61] = { TTYCODE_STRING, "kf61" }, 187 [TTYC_KF62] = { TTYCODE_STRING, "kf62" }, 188 [TTYC_KF63] = { TTYCODE_STRING, "kf63" }, 189 [TTYC_KF7] = { TTYCODE_STRING, "kf7" }, 190 [TTYC_KF8] = { TTYCODE_STRING, "kf8" }, 191 [TTYC_KF9] = { TTYCODE_STRING, "kf9" }, 192 [TTYC_KHOM2] = { TTYCODE_STRING, "kHOM" }, 193 [TTYC_KHOM3] = { TTYCODE_STRING, "kHOM3" }, 194 [TTYC_KHOM4] = { TTYCODE_STRING, "kHOM4" }, 195 [TTYC_KHOM5] = { TTYCODE_STRING, "kHOM5" }, 196 [TTYC_KHOM6] = { TTYCODE_STRING, "kHOM6" }, 197 [TTYC_KHOM7] = { TTYCODE_STRING, "kHOM7" }, 198 [TTYC_KHOME] = { TTYCODE_STRING, "khome" }, 199 [TTYC_KIC2] = { TTYCODE_STRING, "kIC" }, 200 [TTYC_KIC3] = { TTYCODE_STRING, "kIC3" }, 201 [TTYC_KIC4] = { TTYCODE_STRING, "kIC4" }, 202 [TTYC_KIC5] = { TTYCODE_STRING, "kIC5" }, 203 [TTYC_KIC6] = { TTYCODE_STRING, "kIC6" }, 204 [TTYC_KIC7] = { TTYCODE_STRING, "kIC7" }, 205 [TTYC_KICH1] = { TTYCODE_STRING, "kich1" }, 206 [TTYC_KLFT2] = { TTYCODE_STRING, "kLFT" }, 207 [TTYC_KLFT3] = { TTYCODE_STRING, "kLFT3" }, 208 [TTYC_KLFT4] = { TTYCODE_STRING, "kLFT4" }, 209 [TTYC_KLFT5] = { TTYCODE_STRING, "kLFT5" }, 210 [TTYC_KLFT6] = { TTYCODE_STRING, "kLFT6" }, 211 [TTYC_KLFT7] = { TTYCODE_STRING, "kLFT7" }, 212 [TTYC_KMOUS] = { TTYCODE_STRING, "kmous" }, 213 [TTYC_KNP] = { TTYCODE_STRING, "knp" }, 214 [TTYC_KNXT2] = { TTYCODE_STRING, "kNXT" }, 215 [TTYC_KNXT3] = { TTYCODE_STRING, "kNXT3" }, 216 [TTYC_KNXT4] = { TTYCODE_STRING, "kNXT4" }, 217 [TTYC_KNXT5] = { TTYCODE_STRING, "kNXT5" }, 218 [TTYC_KNXT6] = { TTYCODE_STRING, "kNXT6" }, 219 [TTYC_KNXT7] = { TTYCODE_STRING, "kNXT7" }, 220 [TTYC_KPP] = { TTYCODE_STRING, "kpp" }, 221 [TTYC_KPRV2] = { TTYCODE_STRING, "kPRV" }, 222 [TTYC_KPRV3] = { TTYCODE_STRING, "kPRV3" }, 223 [TTYC_KPRV4] = { TTYCODE_STRING, "kPRV4" }, 224 [TTYC_KPRV5] = { TTYCODE_STRING, "kPRV5" }, 225 [TTYC_KPRV6] = { TTYCODE_STRING, "kPRV6" }, 226 [TTYC_KPRV7] = { TTYCODE_STRING, "kPRV7" }, 227 [TTYC_KRIT2] = { TTYCODE_STRING, "kRIT" }, 228 [TTYC_KRIT3] = { TTYCODE_STRING, "kRIT3" }, 229 [TTYC_KRIT4] = { TTYCODE_STRING, "kRIT4" }, 230 [TTYC_KRIT5] = { TTYCODE_STRING, "kRIT5" }, 231 [TTYC_KRIT6] = { TTYCODE_STRING, "kRIT6" }, 232 [TTYC_KRIT7] = { TTYCODE_STRING, "kRIT7" }, 233 [TTYC_KUP2] = { TTYCODE_STRING, "kUP" }, 234 [TTYC_KUP3] = { TTYCODE_STRING, "kUP3" }, 235 [TTYC_KUP4] = { TTYCODE_STRING, "kUP4" }, 236 [TTYC_KUP5] = { TTYCODE_STRING, "kUP5" }, 237 [TTYC_KUP6] = { TTYCODE_STRING, "kUP6" }, 238 [TTYC_KUP7] = { TTYCODE_STRING, "kUP7" }, 239 [TTYC_MS] = { TTYCODE_STRING, "Ms" }, 240 [TTYC_OP] = { TTYCODE_STRING, "op" }, 241 [TTYC_REV] = { TTYCODE_STRING, "rev" }, 242 [TTYC_RI] = { TTYCODE_STRING, "ri" }, 243 [TTYC_RMACS] = { TTYCODE_STRING, "rmacs" }, 244 [TTYC_RMCUP] = { TTYCODE_STRING, "rmcup" }, 245 [TTYC_RMKX] = { TTYCODE_STRING, "rmkx" }, 246 [TTYC_SE] = { TTYCODE_STRING, "Se" }, 247 [TTYC_SETAB] = { TTYCODE_STRING, "setab" }, 248 [TTYC_SETAF] = { TTYCODE_STRING, "setaf" }, 249 [TTYC_SGR0] = { TTYCODE_STRING, "sgr0" }, 250 [TTYC_SITM] = { TTYCODE_STRING, "sitm" }, 251 [TTYC_SMACS] = { TTYCODE_STRING, "smacs" }, 252 [TTYC_SMCUP] = { TTYCODE_STRING, "smcup" }, 253 [TTYC_SMKX] = { TTYCODE_STRING, "smkx" }, 254 [TTYC_SMSO] = { TTYCODE_STRING, "smso" }, 255 [TTYC_SMUL] = { TTYCODE_STRING, "smul" }, 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 270char * 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 299void 300tty_term_override(struct tty_term *term, const char *overrides) 301{ 302 const struct tty_term_code_entry *ent; 303 struct tty_code *code; 304 char *termnext, *termstr; 305 char *entnext, *entstr; 306 char *s, *ptr, *val; 307 const char *errstr; 308 u_int i; 309 int n, removeflag; 310 311 s = xstrdup(overrides); 312 313 termnext = s; 314 while ((termstr = strsep(&termnext, ",")) != NULL) { 315 entnext = termstr; 316 317 entstr = strsep(&entnext, ":"); 318 if (entstr == NULL || entnext == NULL) 319 continue; 320 if (fnmatch(entstr, term->name, 0) != 0) 321 continue; 322 while ((entstr = strsep(&entnext, ":")) != NULL) { 323 if (*entstr == '\0') 324 continue; 325 326 val = NULL; 327 removeflag = 0; 328 if ((ptr = strchr(entstr, '=')) != NULL) { 329 *ptr++ = '\0'; 330 val = xstrdup(ptr); 331 if (strunvis(val, ptr) == -1) { 332 free(val); 333 val = xstrdup(ptr); 334 } 335 } else if (entstr[strlen(entstr) - 1] == '@') { 336 entstr[strlen(entstr) - 1] = '\0'; 337 removeflag = 1; 338 } else 339 val = xstrdup(""); 340 341 log_debug("%s override: %s %s", 342 term->name, entstr, removeflag ? "@" : val); 343 for (i = 0; i < tty_term_ncodes(); i++) { 344 ent = &tty_term_codes[i]; 345 if (strcmp(entstr, ent->name) != 0) 346 continue; 347 code = &term->codes[i]; 348 349 if (removeflag) { 350 code->type = TTYCODE_NONE; 351 continue; 352 } 353 switch (ent->type) { 354 case TTYCODE_NONE: 355 break; 356 case TTYCODE_STRING: 357 if (code->type == TTYCODE_STRING) 358 free(code->value.string); 359 code->value.string = xstrdup(val); 360 code->type = ent->type; 361 break; 362 case TTYCODE_NUMBER: 363 n = strtonum(val, 0, INT_MAX, &errstr); 364 if (errstr != NULL) 365 break; 366 code->value.number = n; 367 code->type = ent->type; 368 break; 369 case TTYCODE_FLAG: 370 code->value.flag = 1; 371 code->type = ent->type; 372 break; 373 } 374 } 375 376 free(val); 377 } 378 } 379 380 free(s); 381} 382 383struct tty_term * 384tty_term_find(char *name, int fd, char **cause) 385{ 386 struct tty_term *term; 387 const struct tty_term_code_entry *ent; 388 struct tty_code *code; 389 u_int i; 390 int n, error; 391 char *s; 392 const char *acs; 393 394 LIST_FOREACH(term, &tty_terms, entry) { 395 if (strcmp(term->name, name) == 0) { 396 term->references++; 397 return (term); 398 } 399 } 400 401 log_debug("new term: %s", name); 402 term = xmalloc(sizeof *term); 403 term->name = xstrdup(name); 404 term->references = 1; 405 term->flags = 0; 406 term->codes = xcalloc (tty_term_ncodes(), sizeof *term->codes); 407 LIST_INSERT_HEAD(&tty_terms, term, entry); 408 409 /* Set up curses terminal. */ 410 if (setupterm(name, fd, &error) != OK) { 411 switch (error) { 412 case 1: 413 xasprintf(cause, "can't use hardcopy terminal: %s", 414 name); 415 break; 416 case 0: 417 xasprintf(cause, "missing or unsuitable terminal: %s", 418 name); 419 break; 420 case -1: 421 xasprintf(cause, "can't find terminfo database"); 422 break; 423 default: 424 xasprintf(cause, "unknown error"); 425 break; 426 } 427 goto error; 428 } 429 430 /* Fill in codes. */ 431 for (i = 0; i < tty_term_ncodes(); i++) { 432 ent = &tty_term_codes[i]; 433 434 code = &term->codes[i]; 435 code->type = TTYCODE_NONE; 436 switch (ent->type) { 437 case TTYCODE_NONE: 438 break; 439 case TTYCODE_STRING: 440 s = tigetstr(ent->name); 441 if (s == NULL || s == (char *) -1) 442 break; 443 code->type = TTYCODE_STRING; 444 code->value.string = tty_term_strip(s); 445 break; 446 case TTYCODE_NUMBER: 447 n = tigetnum(ent->name); 448 if (n == -1 || n == -2) 449 break; 450 code->type = TTYCODE_NUMBER; 451 code->value.number = n; 452 break; 453 case TTYCODE_FLAG: 454 n = tigetflag(ent->name); 455 if (n == -1) 456 break; 457 code->type = TTYCODE_FLAG; 458 code->value.flag = n; 459 break; 460 } 461 } 462 463 /* Apply terminal overrides. */ 464 s = options_get_string(global_options, "terminal-overrides"); 465 tty_term_override(term, s); 466 467 /* Delete curses data. */ 468#if !defined(NCURSES_VERSION_MAJOR) || NCURSES_VERSION_MAJOR > 5 || \ 469 (NCURSES_VERSION_MAJOR == 5 && NCURSES_VERSION_MINOR > 6) 470 del_curterm(cur_term); 471#endif 472 473 /* These are always required. */ 474 if (!tty_term_has(term, TTYC_CLEAR)) { 475 xasprintf(cause, "terminal does not support clear"); 476 goto error; 477 } 478 if (!tty_term_has(term, TTYC_CUP)) { 479 xasprintf(cause, "terminal does not support cup"); 480 goto error; 481 } 482 483 /* These can be emulated so one of the two is required. */ 484 if (!tty_term_has(term, TTYC_CUD1) && !tty_term_has(term, TTYC_CUD)) { 485 xasprintf(cause, "terminal does not support cud1 or cud"); 486 goto error; 487 } 488 489 /* Figure out if we have 256. */ 490 if (tty_term_number(term, TTYC_COLORS) == 256) 491 term->flags |= TERM_256COLOURS; 492 493 /* 494 * Terminals without xenl (eat newline glitch) wrap at at $COLUMNS - 1 495 * rather than $COLUMNS (the cursor can never be beyond $COLUMNS - 1). 496 * 497 * This is irritating, most notably because it is impossible to write 498 * to the very bottom-right of the screen without scrolling. 499 * 500 * Flag the terminal here and apply some workarounds in other places to 501 * do the best possible. 502 */ 503 if (!tty_term_flag(term, TTYC_XENL)) 504 term->flags |= TERM_EARLYWRAP; 505 506 /* Generate ACS table. If none is present, use nearest ASCII. */ 507 memset(term->acs, 0, sizeof term->acs); 508 if (tty_term_has(term, TTYC_ACSC)) 509 acs = tty_term_string(term, TTYC_ACSC); 510 else 511 acs = "a#j+k+l+m+n+o-p-q-r-s-t+u+v+w+x|y<z>~."; 512 for (; acs[0] != '\0' && acs[1] != '\0'; acs += 2) 513 term->acs[(u_char) acs[0]][0] = acs[1]; 514 515 /* On terminals with xterm titles (XT), fill in tsl and fsl. */ 516 if (tty_term_flag(term, TTYC_XT) && 517 !tty_term_has(term, TTYC_TSL) && 518 !tty_term_has(term, TTYC_FSL)) { 519 code = &term->codes[TTYC_TSL]; 520 code->value.string = xstrdup("\033]0;"); 521 code->type = TTYCODE_STRING; 522 code = &term->codes[TTYC_FSL]; 523 code->value.string = xstrdup("\007"); 524 code->type = TTYCODE_STRING; 525 } 526 527 return (term); 528 529error: 530 tty_term_free(term); 531 return (NULL); 532} 533 534void 535tty_term_free(struct tty_term *term) 536{ 537 u_int i; 538 539 if (--term->references != 0) 540 return; 541 542 LIST_REMOVE(term, entry); 543 544 for (i = 0; i < tty_term_ncodes(); i++) { 545 if (term->codes[i].type == TTYCODE_STRING) 546 free(term->codes[i].value.string); 547 } 548 free(term->codes); 549 550 free(term->name); 551 free(term); 552} 553 554int 555tty_term_has(struct tty_term *term, enum tty_code_code code) 556{ 557 return (term->codes[code].type != TTYCODE_NONE); 558} 559 560const char * 561tty_term_string(struct tty_term *term, enum tty_code_code code) 562{ 563 if (!tty_term_has(term, code)) 564 return (""); 565 if (term->codes[code].type != TTYCODE_STRING) 566 fatalx("not a string: %d", code); 567 return (term->codes[code].value.string); 568} 569 570const char * 571tty_term_string1(struct tty_term *term, enum tty_code_code code, int a) 572{ 573 return (tparm(tty_term_string(term, code), a, 0, 0, 0, 0, 0, 0, 0, 0)); 574} 575 576const char * 577tty_term_string2(struct tty_term *term, enum tty_code_code code, int a, int b) 578{ 579 return (tparm(tty_term_string(term, code), a, b, 0, 0, 0, 0, 0, 0, 0)); 580} 581 582const char * 583tty_term_ptr1(struct tty_term *term, enum tty_code_code code, const void *a) 584{ 585 return (tparm(tty_term_string(term, code), (intptr_t)a, 0, 0, 0, 0, 0, 0, 0, 0)); 586} 587 588const char * 589tty_term_ptr2(struct tty_term *term, enum tty_code_code code, const void *a, 590 const void *b) 591{ 592 return (tparm(tty_term_string(term, code), (intptr_t)a, (intptr_t)b, 0, 0, 0, 0, 0, 0, 0)); 593} 594 595int 596tty_term_number(struct tty_term *term, enum tty_code_code code) 597{ 598 if (!tty_term_has(term, code)) 599 return (0); 600 if (term->codes[code].type != TTYCODE_NUMBER) 601 fatalx("not a number: %d", code); 602 return (term->codes[code].value.number); 603} 604 605int 606tty_term_flag(struct tty_term *term, enum tty_code_code code) 607{ 608 if (!tty_term_has(term, code)) 609 return (0); 610 if (term->codes[code].type != TTYCODE_FLAG) 611 fatalx("not a flag: %d", code); 612 return (term->codes[code].value.flag); 613} 614 615const char * 616tty_term_describe(struct tty_term *term, enum tty_code_code code) 617{ 618 static char s[256]; 619 char out[128]; 620 621 switch (term->codes[code].type) { 622 case TTYCODE_NONE: 623 xsnprintf(s, sizeof s, "%4u: %s: [missing]", 624 code, tty_term_codes[code].name); 625 break; 626 case TTYCODE_STRING: 627 strnvis(out, sizeof out, term->codes[code].value.string, 628 VIS_OCTAL|VIS_TAB|VIS_NL); 629 xsnprintf(s, sizeof s, "%4u: %s: (string) %s", 630 code, tty_term_codes[code].name, 631 out); 632 break; 633 case TTYCODE_NUMBER: 634 xsnprintf(s, sizeof s, "%4u: %s: (number) %d", 635 code, tty_term_codes[code].name, 636 term->codes[code].value.number); 637 break; 638 case TTYCODE_FLAG: 639 xsnprintf(s, sizeof s, "%4u: %s: (flag) %s", 640 code, tty_term_codes[code].name, 641 term->codes[code].value.flag ? "true" : "false"); 642 break; 643 } 644 return (s); 645} 646