tty-term.c revision 1.6
1/* $OpenBSD$ */ 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 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_TSL] = { TTYCODE_STRING, "tsl" }, 258 [TTYC_VPA] = { TTYCODE_STRING, "vpa" }, 259 [TTYC_XENL] = { TTYCODE_FLAG, "xenl" }, 260 [TTYC_XT] = { TTYCODE_FLAG, "XT" }, 261}; 262 263u_int 264tty_term_ncodes(void) 265{ 266 return (nitems(tty_term_codes)); 267} 268 269char * 270tty_term_strip(const char *s) 271{ 272 const char *ptr; 273 static char buf[BUFSIZ]; 274 size_t len; 275 276 /* Ignore strings with no padding. */ 277 if (strchr(s, '$') == NULL) 278 return (xstrdup(s)); 279 280 len = 0; 281 for (ptr = s; *ptr != '\0'; ptr++) { 282 if (*ptr == '$' && *(ptr + 1) == '<') { 283 while (*ptr != '\0' && *ptr != '>') 284 ptr++; 285 if (*ptr == '>') 286 ptr++; 287 } 288 289 buf[len++] = *ptr; 290 if (len == (sizeof buf) - 1) 291 break; 292 } 293 buf[len] = '\0'; 294 295 return (xstrdup(buf)); 296} 297 298void 299tty_term_override(struct tty_term *term, const char *overrides) 300{ 301 const struct tty_term_code_entry *ent; 302 struct tty_code *code; 303 char *termnext, *termstr; 304 char *entnext, *entstr; 305 char *s, *ptr, *val; 306 const char *errstr; 307 u_int i; 308 int n, removeflag; 309 310 s = xstrdup(overrides); 311 312 termnext = s; 313 while ((termstr = strsep(&termnext, ",")) != NULL) { 314 entnext = termstr; 315 316 entstr = strsep(&entnext, ":"); 317 if (entstr == NULL || entnext == NULL) 318 continue; 319 if (fnmatch(entstr, term->name, 0) != 0) 320 continue; 321 while ((entstr = strsep(&entnext, ":")) != NULL) { 322 if (*entstr == '\0') 323 continue; 324 325 val = NULL; 326 removeflag = 0; 327 if ((ptr = strchr(entstr, '=')) != NULL) { 328 *ptr++ = '\0'; 329 val = xstrdup(ptr); 330 if (strunvis(val, ptr) == -1) { 331 free(val); 332 val = xstrdup(ptr); 333 } 334 } else if (entstr[strlen(entstr) - 1] == '@') { 335 entstr[strlen(entstr) - 1] = '\0'; 336 removeflag = 1; 337 } else 338 val = xstrdup(""); 339 340 log_debug("%s override: %s %s", 341 term->name, entstr, removeflag ? "@" : val); 342 for (i = 0; i < tty_term_ncodes(); i++) { 343 ent = &tty_term_codes[i]; 344 if (strcmp(entstr, ent->name) != 0) 345 continue; 346 code = &term->codes[i]; 347 348 if (removeflag) { 349 code->type = TTYCODE_NONE; 350 continue; 351 } 352 switch (ent->type) { 353 case TTYCODE_NONE: 354 break; 355 case TTYCODE_STRING: 356 if (code->type == TTYCODE_STRING) 357 free(code->value.string); 358 code->value.string = xstrdup(val); 359 code->type = ent->type; 360 break; 361 case TTYCODE_NUMBER: 362 n = strtonum(val, 0, INT_MAX, &errstr); 363 if (errstr != NULL) 364 break; 365 code->value.number = n; 366 code->type = ent->type; 367 break; 368 case TTYCODE_FLAG: 369 code->value.flag = 1; 370 code->type = ent->type; 371 break; 372 } 373 } 374 375 free(val); 376 } 377 } 378 379 free(s); 380} 381 382struct tty_term * 383tty_term_find(char *name, int fd, char **cause) 384{ 385 struct tty_term *term; 386 const struct tty_term_code_entry *ent; 387 struct tty_code *code; 388 u_int i; 389 int n, error; 390 char *s; 391 const char *acs; 392 393 LIST_FOREACH(term, &tty_terms, entry) { 394 if (strcmp(term->name, name) == 0) { 395 term->references++; 396 return (term); 397 } 398 } 399 400 log_debug("new term: %s", name); 401 term = xmalloc(sizeof *term); 402 term->name = xstrdup(name); 403 term->references = 1; 404 term->flags = 0; 405 term->codes = xcalloc (tty_term_ncodes(), sizeof *term->codes); 406 LIST_INSERT_HEAD(&tty_terms, term, entry); 407 408 /* Set up curses terminal. */ 409 if (setupterm(name, fd, &error) != OK) { 410 switch (error) { 411 case 1: 412 xasprintf( 413 cause, "can't use hardcopy terminal: %s", name); 414 break; 415 case 0: 416 xasprintf( 417 cause, "missing or unsuitable terminal: %s", name); 418 break; 419 case -1: 420 xasprintf(cause, "can't find terminfo database"); 421 break; 422 default: 423 xasprintf(cause, "unknown error"); 424 break; 425 } 426 goto error; 427 } 428 429 /* Fill in codes. */ 430 for (i = 0; i < tty_term_ncodes(); i++) { 431 ent = &tty_term_codes[i]; 432 433 code = &term->codes[i]; 434 code->type = TTYCODE_NONE; 435 switch (ent->type) { 436 case TTYCODE_NONE: 437 break; 438 case TTYCODE_STRING: 439 s = tigetstr(ent->name); 440 if (s == NULL || s == (char *) -1) 441 break; 442 code->type = TTYCODE_STRING; 443 code->value.string = tty_term_strip(s); 444 break; 445 case TTYCODE_NUMBER: 446 n = tigetnum(ent->name); 447 if (n == -1 || n == -2) 448 break; 449 code->type = TTYCODE_NUMBER; 450 code->value.number = n; 451 break; 452 case TTYCODE_FLAG: 453 n = tigetflag(ent->name); 454 if (n == -1) 455 break; 456 code->type = TTYCODE_FLAG; 457 code->value.flag = n; 458 break; 459 } 460 } 461 462 /* Apply terminal overrides. */ 463 s = options_get_string(&global_options, "terminal-overrides"); 464 tty_term_override(term, s); 465 466 /* Delete curses data. */ 467#if !defined(NCURSES_VERSION_MAJOR) || NCURSES_VERSION_MAJOR > 5 || \ 468 (NCURSES_VERSION_MAJOR == 5 && NCURSES_VERSION_MINOR > 6) 469 del_curterm(cur_term); 470#endif 471 472 /* These are always required. */ 473 if (!tty_term_has(term, TTYC_CLEAR)) { 474 xasprintf(cause, "terminal does not support clear"); 475 goto error; 476 } 477 if (!tty_term_has(term, TTYC_CUP)) { 478 xasprintf(cause, "terminal does not support cup"); 479 goto error; 480 } 481 482 /* These can be emulated so one of the two is required. */ 483 if (!tty_term_has(term, TTYC_CUD1) && !tty_term_has(term, TTYC_CUD)) { 484 xasprintf(cause, "terminal does not support cud1 or cud"); 485 goto error; 486 } 487 488 /* Figure out if we have 256. */ 489 if (tty_term_number(term, TTYC_COLORS) == 256) 490 term->flags |= TERM_256COLOURS; 491 492 /* 493 * Terminals without xenl (eat newline glitch) wrap at at $COLUMNS - 1 494 * rather than $COLUMNS (the cursor can never be beyond $COLUMNS - 1). 495 * 496 * This is irritating, most notably because it is impossible to write 497 * to the very bottom-right of the screen without scrolling. 498 * 499 * Flag the terminal here and apply some workarounds in other places to 500 * do the best possible. 501 */ 502 if (!tty_term_flag(term, TTYC_XENL)) 503 term->flags |= TERM_EARLYWRAP; 504 505 /* Generate ACS table. If none is present, use nearest ASCII. */ 506 memset(term->acs, 0, sizeof term->acs); 507 if (tty_term_has(term, TTYC_ACSC)) 508 acs = tty_term_string(term, TTYC_ACSC); 509 else 510 acs = "a#j+k+l+m+n+o-p-q-r-s-t+u+v+w+x|y<z>~."; 511 for (; acs[0] != '\0' && acs[1] != '\0'; acs += 2) 512 term->acs[(u_char) acs[0]][0] = acs[1]; 513 514 /* On terminals with xterm titles (XT), fill in tsl and fsl. */ 515 if (tty_term_flag(term, TTYC_XT) && 516 !tty_term_has(term, TTYC_TSL) && 517 !tty_term_has(term, TTYC_FSL)) { 518 code = &term->codes[TTYC_TSL]; 519 code->value.string = xstrdup("\033]0;"); 520 code->type = TTYCODE_STRING; 521 code = &term->codes[TTYC_FSL]; 522 code->value.string = xstrdup("\007"); 523 code->type = TTYCODE_STRING; 524 } 525 526 return (term); 527 528error: 529 tty_term_free(term); 530 return (NULL); 531} 532 533void 534tty_term_free(struct tty_term *term) 535{ 536 u_int i; 537 538 if (--term->references != 0) 539 return; 540 541 LIST_REMOVE(term, entry); 542 543 for (i = 0; i < tty_term_ncodes(); i++) { 544 if (term->codes[i].type == TTYCODE_STRING) 545 free(term->codes[i].value.string); 546 } 547 free(term->codes); 548 549 free(term->name); 550 free(term); 551} 552 553int 554tty_term_has(struct tty_term *term, enum tty_code_code code) 555{ 556 return (term->codes[code].type != TTYCODE_NONE); 557} 558 559const char * 560tty_term_string(struct tty_term *term, enum tty_code_code code) 561{ 562 if (!tty_term_has(term, code)) 563 return (""); 564 if (term->codes[code].type != TTYCODE_STRING) 565 log_fatalx("not a string: %d", code); 566 return (term->codes[code].value.string); 567} 568 569const char * 570tty_term_string1(struct tty_term *term, enum tty_code_code code, int a) 571{ 572 return (tparm(tty_term_string(term, code), a, 0, 0, 0, 0, 0, 0, 0, 0)); 573} 574 575const char * 576tty_term_string2(struct tty_term *term, enum tty_code_code code, int a, int b) 577{ 578 return (tparm(tty_term_string(term, code), a, b, 0, 0, 0, 0, 0, 0, 0)); 579} 580 581const char * 582tty_term_ptr1(struct tty_term *term, enum tty_code_code code, const void *a) 583{ 584 return (tparm(tty_term_string(term, code), (intptr_t)a, 0, 0, 0, 0, 0, 0, 0, 0)); 585} 586 587const char * 588tty_term_ptr2(struct tty_term *term, enum tty_code_code code, const void *a, 589 const void *b) 590{ 591 return (tparm(tty_term_string(term, code), (intptr_t)a, (intptr_t)b, 0, 0, 0, 0, 0, 0, 0)); 592} 593 594int 595tty_term_number(struct tty_term *term, enum tty_code_code code) 596{ 597 if (!tty_term_has(term, code)) 598 return (0); 599 if (term->codes[code].type != TTYCODE_NUMBER) 600 log_fatalx("not a number: %d", code); 601 return (term->codes[code].value.number); 602} 603 604int 605tty_term_flag(struct tty_term *term, enum tty_code_code code) 606{ 607 if (!tty_term_has(term, code)) 608 return (0); 609 if (term->codes[code].type != TTYCODE_FLAG) 610 log_fatalx("not a flag: %d", code); 611 return (term->codes[code].value.flag); 612} 613 614const char * 615tty_term_describe(struct tty_term *term, enum tty_code_code code) 616{ 617 static char s[256]; 618 char out[128]; 619 620 switch (term->codes[code].type) { 621 case TTYCODE_NONE: 622 xsnprintf(s, sizeof s, "%4u: %s: [missing]", 623 code, tty_term_codes[code].name); 624 break; 625 case TTYCODE_STRING: 626 strnvis(out, sizeof out, term->codes[code].value.string, 627 VIS_OCTAL|VIS_TAB|VIS_NL); 628 xsnprintf(s, sizeof s, "%4u: %s: (string) %s", 629 code, tty_term_codes[code].name, 630 out); 631 break; 632 case TTYCODE_NUMBER: 633 xsnprintf(s, sizeof s, "%4u: %s: (number) %d", 634 code, tty_term_codes[code].name, 635 term->codes[code].value.number); 636 break; 637 case TTYCODE_FLAG: 638 xsnprintf(s, sizeof s, "%4u: %s: (flag) %s", 639 code, tty_term_codes[code].name, 640 term->codes[code].value.flag ? "true" : "false"); 641 break; 642 } 643 return (s); 644} 645