1 /* $OpenBSD: options.c,v 1.22 2016/08/01 18:27:35 bentley Exp $ */ 2 3 /*- 4 * Copyright (c) 1991, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * Copyright (c) 1991, 1993, 1994, 1995, 1996 7 * Keith Bostic. All rights reserved. 8 * 9 * See the LICENSE file for redistribution information. 10 */ 11 12 #include "config.h" 13 14 #include <sys/types.h> 15 #include <sys/queue.h> 16 #include <sys/stat.h> 17 #include <sys/time.h> 18 19 #include <bitstring.h> 20 #include <ctype.h> 21 #include <errno.h> 22 #include <limits.h> 23 #include <paths.h> 24 #include <stdio.h> 25 #include <stdlib.h> 26 #include <string.h> 27 #include <unistd.h> 28 29 #include "common.h" 30 #include "../vi/vi.h" 31 #include "pathnames.h" 32 33 static int opts_abbcmp(const void *, const void *); 34 static int opts_cmp(const void *, const void *); 35 static int opts_print(SCR *, OPTLIST const *); 36 37 /* 38 * O'Reilly noted options and abbreviations are from "Learning the VI Editor", 39 * Fifth Edition, May 1992. There's no way of knowing what systems they are 40 * actually from. 41 * 42 * HPUX noted options and abbreviations are from "The Ultimate Guide to the 43 * VI and EX Text Editors", 1990. 44 */ 45 OPTLIST const optlist[] = { 46 /* O_ALTWERASE 4.4BSD */ 47 {"altwerase", f_altwerase, OPT_0BOOL, 0}, 48 /* O_AUTOINDENT 4BSD */ 49 {"autoindent", NULL, OPT_0BOOL, 0}, 50 /* O_AUTOPRINT 4BSD */ 51 {"autoprint", NULL, OPT_1BOOL, 0}, 52 /* O_AUTOWRITE 4BSD */ 53 {"autowrite", NULL, OPT_0BOOL, 0}, 54 /* O_BACKUP 4.4BSD */ 55 {"backup", NULL, OPT_STR, 0}, 56 /* O_BEAUTIFY 4BSD */ 57 {"beautify", NULL, OPT_0BOOL, 0}, 58 /* O_CDPATH 4.4BSD */ 59 {"cdpath", NULL, OPT_STR, 0}, 60 /* O_CEDIT 4.4BSD */ 61 {"cedit", NULL, OPT_STR, 0}, 62 /* O_COLUMNS 4.4BSD */ 63 {"columns", f_columns, OPT_NUM, OPT_NOSAVE}, 64 /* O_COMMENT 4.4BSD */ 65 {"comment", NULL, OPT_0BOOL, 0}, 66 /* O_EDCOMPATIBLE 4BSD */ 67 {"edcompatible",NULL, OPT_0BOOL, 0}, 68 /* O_ESCAPETIME 4.4BSD */ 69 {"escapetime", NULL, OPT_NUM, 0}, 70 /* O_ERRORBELLS 4BSD */ 71 {"errorbells", NULL, OPT_0BOOL, 0}, 72 /* O_EXRC System V (undocumented) */ 73 {"exrc", NULL, OPT_0BOOL, 0}, 74 /* O_EXTENDED 4.4BSD */ 75 {"extended", f_recompile, OPT_0BOOL, 0}, 76 /* O_FILEC 4.4BSD */ 77 {"filec", NULL, OPT_STR, 0}, 78 /* O_FLASH HPUX */ 79 {"flash", NULL, OPT_0BOOL, 0}, 80 /* O_HARDTABS 4BSD */ 81 {"hardtabs", NULL, OPT_NUM, 0}, 82 /* O_ICLOWER 4.4BSD */ 83 {"iclower", f_recompile, OPT_0BOOL, 0}, 84 /* O_IGNORECASE 4BSD */ 85 {"ignorecase", f_recompile, OPT_0BOOL, 0}, 86 /* O_KEYTIME 4.4BSD */ 87 {"keytime", NULL, OPT_NUM, 0}, 88 /* O_LEFTRIGHT 4.4BSD */ 89 {"leftright", f_reformat, OPT_0BOOL, 0}, 90 /* O_LINES 4.4BSD */ 91 {"lines", f_lines, OPT_NUM, OPT_NOSAVE}, 92 /* O_LISP 4BSD 93 * XXX 94 * When the lisp option is implemented, delete the OPT_NOSAVE flag, 95 * so that :mkexrc dumps it. 96 */ 97 {"lisp", f_lisp, OPT_0BOOL, OPT_NOSAVE}, 98 /* O_LIST 4BSD */ 99 {"list", f_reformat, OPT_0BOOL, 0}, 100 /* O_LOCKFILES 4.4BSD 101 * XXX 102 * Locking isn't reliable enough over NFS to require it, in addition, 103 * it's a serious startup performance problem over some remote links. 104 */ 105 {"lock", NULL, OPT_1BOOL, 0}, 106 /* O_MAGIC 4BSD */ 107 {"magic", NULL, OPT_1BOOL, 0}, 108 /* O_MATCHTIME 4.4BSD */ 109 {"matchtime", NULL, OPT_NUM, 0}, 110 /* O_MESG 4BSD */ 111 {"mesg", NULL, OPT_1BOOL, 0}, 112 /* O_MODELINE 4BSD 113 * !!! 114 * This has been documented in historical systems as both "modeline" 115 * and as "modelines". Regardless of the name, this option represents 116 * a security problem of mammoth proportions, not to mention a stunning 117 * example of what your intro CS professor referred to as the perils of 118 * mixing code and data. Don't add it, or I will kill you. 119 */ 120 {"modeline", NULL, OPT_0BOOL, OPT_NOSET}, 121 /* O_NOPRINT 4.4BSD */ 122 {"noprint", f_print, OPT_STR, OPT_EARLYSET}, 123 /* O_NUMBER 4BSD */ 124 {"number", f_reformat, OPT_0BOOL, 0}, 125 /* O_OCTAL 4.4BSD */ 126 {"octal", f_print, OPT_0BOOL, OPT_EARLYSET}, 127 /* O_OPEN 4BSD */ 128 {"open", NULL, OPT_1BOOL, 0}, 129 /* O_OPTIMIZE 4BSD */ 130 {"optimize", NULL, OPT_1BOOL, 0}, 131 /* O_PARAGRAPHS 4BSD */ 132 {"paragraphs", f_paragraph, OPT_STR, 0}, 133 /* O_PATH 4.4BSD */ 134 {"path", NULL, OPT_STR, 0}, 135 /* O_PRINT 4.4BSD */ 136 {"print", f_print, OPT_STR, OPT_EARLYSET}, 137 /* O_PROMPT 4BSD */ 138 {"prompt", NULL, OPT_1BOOL, 0}, 139 /* O_READONLY 4BSD (undocumented) */ 140 {"readonly", f_readonly, OPT_0BOOL, OPT_ALWAYS}, 141 /* O_RECDIR 4.4BSD */ 142 {"recdir", NULL, OPT_STR, 0}, 143 /* O_REDRAW 4BSD */ 144 {"redraw", NULL, OPT_0BOOL, 0}, 145 /* O_REMAP 4BSD */ 146 {"remap", NULL, OPT_1BOOL, 0}, 147 /* O_REPORT 4BSD */ 148 {"report", NULL, OPT_NUM, 0}, 149 /* O_RULER 4.4BSD */ 150 {"ruler", NULL, OPT_0BOOL, 0}, 151 /* O_SCROLL 4BSD */ 152 {"scroll", NULL, OPT_NUM, 0}, 153 /* O_SEARCHINCR 4.4BSD */ 154 {"searchincr", NULL, OPT_0BOOL, 0}, 155 /* O_SECTIONS 4BSD */ 156 {"sections", f_section, OPT_STR, 0}, 157 /* O_SECURE 4.4BSD */ 158 {"secure", NULL, OPT_0BOOL, OPT_NOUNSET}, 159 /* O_SHELL 4BSD */ 160 {"shell", NULL, OPT_STR, 0}, 161 /* O_SHELLMETA 4.4BSD */ 162 {"shellmeta", NULL, OPT_STR, 0}, 163 /* O_SHIFTWIDTH 4BSD */ 164 {"shiftwidth", NULL, OPT_NUM, OPT_NOZERO}, 165 /* O_SHOWMATCH 4BSD */ 166 {"showmatch", NULL, OPT_0BOOL, 0}, 167 /* O_SHOWMODE 4.4BSD */ 168 {"showmode", NULL, OPT_0BOOL, 0}, 169 /* O_SIDESCROLL 4.4BSD */ 170 {"sidescroll", NULL, OPT_NUM, OPT_NOZERO}, 171 /* O_SLOWOPEN 4BSD */ 172 {"slowopen", NULL, OPT_0BOOL, 0}, 173 /* O_SOURCEANY 4BSD (undocumented) 174 * !!! 175 * Historic vi, on startup, source'd $HOME/.exrc and ./.exrc, if they 176 * were owned by the user. The sourceany option was an undocumented 177 * feature of historic vi which permitted the startup source'ing of 178 * .exrc files the user didn't own. This is an obvious security problem, 179 * and we ignore the option. 180 */ 181 {"sourceany", NULL, OPT_0BOOL, OPT_NOSET}, 182 /* O_TABSTOP 4BSD */ 183 {"tabstop", f_reformat, OPT_NUM, OPT_NOZERO}, 184 /* O_TAGLENGTH 4BSD */ 185 {"taglength", NULL, OPT_NUM, 0}, 186 /* O_TAGS 4BSD */ 187 {"tags", NULL, OPT_STR, 0}, 188 /* O_TERM 4BSD 189 * !!! 190 * By default, the historic vi always displayed information about two 191 * options, redraw and term. Term seems sufficient. 192 */ 193 {"term", NULL, OPT_STR, OPT_ADISP|OPT_NOSAVE}, 194 /* O_TERSE 4BSD */ 195 {"terse", NULL, OPT_0BOOL, 0}, 196 /* O_TILDEOP 4.4BSD */ 197 {"tildeop", NULL, OPT_0BOOL, 0}, 198 /* O_TIMEOUT 4BSD (undocumented) */ 199 {"timeout", NULL, OPT_1BOOL, 0}, 200 /* O_TTYWERASE 4.4BSD */ 201 {"ttywerase", f_ttywerase, OPT_0BOOL, 0}, 202 /* O_VERBOSE 4.4BSD */ 203 {"verbose", NULL, OPT_0BOOL, 0}, 204 /* O_W1200 4BSD */ 205 {"w1200", f_w1200, OPT_NUM, OPT_NDISP|OPT_NOSAVE}, 206 /* O_W300 4BSD */ 207 {"w300", f_w300, OPT_NUM, OPT_NDISP|OPT_NOSAVE}, 208 /* O_W9600 4BSD */ 209 {"w9600", f_w9600, OPT_NUM, OPT_NDISP|OPT_NOSAVE}, 210 /* O_WARN 4BSD */ 211 {"warn", NULL, OPT_1BOOL, 0}, 212 /* O_WINDOW 4BSD */ 213 {"window", f_window, OPT_NUM, 0}, 214 /* O_WINDOWNAME 4BSD */ 215 {"windowname", NULL, OPT_0BOOL, 0}, 216 /* O_WRAPLEN 4.4BSD */ 217 {"wraplen", NULL, OPT_NUM, 0}, 218 /* O_WRAPMARGIN 4BSD */ 219 {"wrapmargin", NULL, OPT_NUM, 0}, 220 /* O_WRAPSCAN 4BSD */ 221 {"wrapscan", NULL, OPT_1BOOL, 0}, 222 /* O_WRITEANY 4BSD */ 223 {"writeany", NULL, OPT_0BOOL, 0}, 224 {NULL}, 225 }; 226 227 typedef struct abbrev { 228 char *name; 229 int offset; 230 } OABBREV; 231 232 static OABBREV const abbrev[] = { 233 {"ai", O_AUTOINDENT}, /* 4BSD */ 234 {"ap", O_AUTOPRINT}, /* 4BSD */ 235 {"aw", O_AUTOWRITE}, /* 4BSD */ 236 {"bf", O_BEAUTIFY}, /* 4BSD */ 237 {"co", O_COLUMNS}, /* 4.4BSD */ 238 {"eb", O_ERRORBELLS}, /* 4BSD */ 239 {"ed", O_EDCOMPATIBLE}, /* 4BSD */ 240 {"ex", O_EXRC}, /* System V (undocumented) */ 241 {"ht", O_HARDTABS}, /* 4BSD */ 242 {"ic", O_IGNORECASE}, /* 4BSD */ 243 {"li", O_LINES}, /* 4.4BSD */ 244 {"modelines", O_MODELINE}, /* HPUX */ 245 {"nu", O_NUMBER}, /* 4BSD */ 246 {"opt", O_OPTIMIZE}, /* 4BSD */ 247 {"para", O_PARAGRAPHS}, /* 4BSD */ 248 {"re", O_REDRAW}, /* O'Reilly */ 249 {"ro", O_READONLY}, /* 4BSD (undocumented) */ 250 {"scr", O_SCROLL}, /* 4BSD (undocumented) */ 251 {"sect", O_SECTIONS}, /* O'Reilly */ 252 {"sh", O_SHELL}, /* 4BSD */ 253 {"slow", O_SLOWOPEN}, /* 4BSD */ 254 {"sm", O_SHOWMATCH}, /* 4BSD */ 255 {"smd", O_SHOWMODE}, /* 4BSD */ 256 {"sw", O_SHIFTWIDTH}, /* 4BSD */ 257 {"tag", O_TAGS}, /* 4BSD (undocumented) */ 258 {"tl", O_TAGLENGTH}, /* 4BSD */ 259 {"to", O_TIMEOUT}, /* 4BSD (undocumented) */ 260 {"ts", O_TABSTOP}, /* 4BSD */ 261 {"tty", O_TERM}, /* 4BSD (undocumented) */ 262 {"ttytype", O_TERM}, /* 4BSD (undocumented) */ 263 {"w", O_WINDOW}, /* O'Reilly */ 264 {"wa", O_WRITEANY}, /* 4BSD */ 265 {"wi", O_WINDOW}, /* 4BSD (undocumented) */ 266 {"wl", O_WRAPLEN}, /* 4.4BSD */ 267 {"wm", O_WRAPMARGIN}, /* 4BSD */ 268 {"ws", O_WRAPSCAN}, /* 4BSD */ 269 {NULL}, 270 }; 271 272 /* 273 * opts_init -- 274 * Initialize some of the options. 275 * 276 * PUBLIC: int opts_init(SCR *, int *); 277 */ 278 int 279 opts_init(SCR *sp, int *oargs) 280 { 281 ARGS *argv[2], a, b; 282 OPTLIST const *op; 283 u_long v; 284 int optindx; 285 char *s, b1[1024]; 286 287 a.bp = b1; 288 b.bp = NULL; 289 a.len = b.len = 0; 290 argv[0] = &a; 291 argv[1] = &b; 292 293 /* Set numeric and string default values. */ 294 #define OI(indx, str) { \ 295 if ((str) != b1) /* GCC puts strings in text-space. */ \ 296 (void)strlcpy(b1, (str), sizeof(b1)); \ 297 a.len = strlen(b1); \ 298 if (opts_set(sp, argv, NULL)) { \ 299 optindx = indx; \ 300 goto err; \ 301 } \ 302 } 303 /* 304 * Indirect global options to global space. Specifically, set up 305 * terminal, lines, columns first, they're used by other options. 306 * Note, don't set the flags until we've set up the indirection. 307 */ 308 if (o_set(sp, O_TERM, 0, NULL, GO_TERM)) { 309 optindx = O_TERM; 310 goto err; 311 } 312 F_SET(&sp->opts[O_TERM], OPT_GLOBAL); 313 if (o_set(sp, O_LINES, 0, NULL, GO_LINES)) { 314 optindx = O_LINES; 315 goto err; 316 } 317 F_SET(&sp->opts[O_LINES], OPT_GLOBAL); 318 if (o_set(sp, O_COLUMNS, 0, NULL, GO_COLUMNS)) { 319 optindx = O_COLUMNS; 320 goto err; 321 } 322 F_SET(&sp->opts[O_COLUMNS], OPT_GLOBAL); 323 if (o_set(sp, O_SECURE, 0, NULL, GO_SECURE)) { 324 optindx = O_SECURE; 325 goto err; 326 } 327 F_SET(&sp->opts[O_SECURE], OPT_GLOBAL); 328 329 /* Initialize string values. */ 330 (void)snprintf(b1, sizeof(b1), 331 "cdpath=%s", (s = getenv("CDPATH")) == NULL ? ":" : s); 332 OI(O_CDPATH, b1); 333 OI(O_ESCAPETIME, "escapetime=1"); 334 OI(O_FILEC, "filec=\t"); 335 OI(O_KEYTIME, "keytime=6"); 336 OI(O_MATCHTIME, "matchtime=7"); 337 OI(O_REPORT, "report=5"); 338 OI(O_PARAGRAPHS, "paragraphs=IPLPPPQPP LIpplpipbp"); 339 (void)snprintf(b1, sizeof(b1), "path=%s", ""); 340 OI(O_PATH, b1); 341 (void)snprintf(b1, sizeof(b1), "recdir=%s", _PATH_PRESERVE); 342 OI(O_RECDIR, b1); 343 OI(O_SECTIONS, "sections=NHSHH HUnhsh"); 344 (void)snprintf(b1, sizeof(b1), 345 "shell=%s", (s = getenv("SHELL")) == NULL ? _PATH_BSHELL : s); 346 OI(O_SHELL, b1); 347 OI(O_SHELLMETA, "shellmeta=~{[*?$`'\"\\"); 348 OI(O_SHIFTWIDTH, "shiftwidth=8"); 349 OI(O_SIDESCROLL, "sidescroll=16"); 350 OI(O_TABSTOP, "tabstop=8"); 351 (void)snprintf(b1, sizeof(b1), "tags=%s", _PATH_TAGS); 352 OI(O_TAGS, b1); 353 354 /* 355 * XXX 356 * Initialize O_SCROLL here, after term; initializing term should 357 * have created a LINES/COLUMNS value. 358 */ 359 if ((v = (O_VAL(sp, O_LINES) - 1) / 2) == 0) 360 v = 1; 361 (void)snprintf(b1, sizeof(b1), "scroll=%ld", v); 362 OI(O_SCROLL, b1); 363 364 /* 365 * The default window option values are: 366 * 8 if baud rate <= 600 367 * 16 if baud rate <= 1200 368 * LINES - 1 if baud rate > 1200 369 * 370 * Note, the windows option code will correct any too-large value 371 * or when the O_LINES value is 1. 372 */ 373 if (sp->gp->scr_baud(sp, &v)) 374 return (1); 375 if (v <= 600) 376 v = 8; 377 else if (v <= 1200) 378 v = 16; 379 else 380 v = O_VAL(sp, O_LINES) - 1; 381 (void)snprintf(b1, sizeof(b1), "window=%lu", v); 382 OI(O_WINDOW, b1); 383 384 /* 385 * Set boolean default values, and copy all settings into the default 386 * information. OS_NOFREE is set, we're copying, not replacing. 387 */ 388 for (op = optlist, optindx = 0; op->name != NULL; ++op, ++optindx) 389 switch (op->type) { 390 case OPT_0BOOL: 391 break; 392 case OPT_1BOOL: 393 O_SET(sp, optindx); 394 O_D_SET(sp, optindx); 395 break; 396 case OPT_NUM: 397 o_set(sp, optindx, OS_DEF, NULL, O_VAL(sp, optindx)); 398 break; 399 case OPT_STR: 400 if (O_STR(sp, optindx) != NULL && o_set(sp, optindx, 401 OS_DEF | OS_NOFREE | OS_STRDUP, O_STR(sp, optindx), 0)) 402 goto err; 403 break; 404 default: 405 abort(); 406 } 407 408 /* 409 * !!! 410 * Some options can be initialized by the command name or the 411 * command-line arguments. They don't set the default values, 412 * it's historic practice. 413 */ 414 for (; *oargs != -1; ++oargs) 415 OI(*oargs, optlist[*oargs].name); 416 return (0); 417 #undef OI 418 419 err: msgq(sp, M_ERR, 420 "Unable to set default %s option", optlist[optindx].name); 421 return (1); 422 } 423 424 /* 425 * opts_set -- 426 * Change the values of one or more options. 427 * 428 * PUBLIC: int opts_set(SCR *, ARGS *[], char *); 429 */ 430 int 431 opts_set(SCR *sp, ARGS *argv[], char *usage) 432 { 433 enum optdisp disp; 434 enum nresult nret; 435 OPTLIST const *op; 436 OPTION *spo; 437 u_long value, turnoff; 438 int ch, equals, nf, nf2, offset, qmark, rval; 439 char *endp, *name, *p, *sep, *t; 440 441 disp = NO_DISPLAY; 442 for (rval = 0; argv[0]->len != 0; ++argv) { 443 /* 444 * The historic vi dumped the options for each occurrence of 445 * "all" in the set list. Puhleeze. 446 */ 447 if (!strcmp(argv[0]->bp, "all")) { 448 disp = ALL_DISPLAY; 449 continue; 450 } 451 452 /* Find equals sign or question mark. */ 453 for (sep = NULL, equals = qmark = 0, 454 p = name = argv[0]->bp; (ch = *p) != '\0'; ++p) 455 if (ch == '=' || ch == '?') { 456 if (p == name) { 457 if (usage != NULL) 458 msgq(sp, M_ERR, 459 "Usage: %s", usage); 460 return (1); 461 } 462 sep = p; 463 if (ch == '=') 464 equals = 1; 465 else 466 qmark = 1; 467 break; 468 } 469 470 turnoff = 0; 471 op = NULL; 472 if (sep != NULL) 473 *sep++ = '\0'; 474 475 /* Search for the name, then name without any leading "no". */ 476 if ((op = opts_search(name)) == NULL && 477 name[0] == 'n' && name[1] == 'o') { 478 turnoff = 1; 479 name += 2; 480 op = opts_search(name); 481 } 482 if (op == NULL) { 483 opts_nomatch(sp, name); 484 rval = 1; 485 continue; 486 } 487 488 /* Find current option values. */ 489 offset = op - optlist; 490 spo = sp->opts + offset; 491 492 /* 493 * !!! 494 * Historically, the question mark could be a separate 495 * argument. 496 */ 497 if (!equals && !qmark && 498 argv[1]->len == 1 && argv[1]->bp[0] == '?') { 499 ++argv; 500 qmark = 1; 501 } 502 503 /* Set name, value. */ 504 switch (op->type) { 505 case OPT_0BOOL: 506 case OPT_1BOOL: 507 /* Some options may not be reset. */ 508 if (F_ISSET(op, OPT_NOUNSET) && turnoff) { 509 msgq_str(sp, M_ERR, name, 510 "set: the %s option may not be turned off"); 511 rval = 1; 512 break; 513 } 514 515 /* Some options may not be set. */ 516 if (F_ISSET(op, OPT_NOSET) && !turnoff) { 517 msgq_str(sp, M_ERR, name, 518 "set: the %s option may never be turned on"); 519 rval = 1; 520 break; 521 } 522 523 if (equals) { 524 msgq_str(sp, M_ERR, name, 525 "set: [no]%s option doesn't take a value"); 526 rval = 1; 527 break; 528 } 529 if (qmark) { 530 if (!disp) 531 disp = SELECT_DISPLAY; 532 F_SET(spo, OPT_SELECTED); 533 break; 534 } 535 536 /* 537 * Do nothing if the value is unchanged, the underlying 538 * functions can be expensive. 539 */ 540 if (!F_ISSET(op, OPT_ALWAYS)) { 541 if (turnoff) { 542 if (!O_ISSET(sp, offset)) 543 break; 544 } else { 545 if (O_ISSET(sp, offset)) 546 break; 547 } 548 } 549 550 if (F_ISSET(op, OPT_EARLYSET)) { 551 /* Set the value. */ 552 if (turnoff) 553 O_CLR(sp, offset); 554 else 555 O_SET(sp, offset); 556 } 557 558 /* Report to subsystems. */ 559 if ((op->func != NULL && 560 op->func(sp, spo, NULL, &turnoff)) || 561 ex_optchange(sp, offset, NULL, &turnoff) || 562 v_optchange(sp, offset, NULL, &turnoff) || 563 sp->gp->scr_optchange(sp, offset, NULL, &turnoff)) { 564 rval = 1; 565 break; 566 } 567 568 if (!F_ISSET(op, OPT_EARLYSET)) { 569 /* Set the value. */ 570 if (turnoff) 571 O_CLR(sp, offset); 572 else 573 O_SET(sp, offset); 574 } 575 break; 576 case OPT_NUM: 577 if (turnoff) { 578 msgq_str(sp, M_ERR, name, 579 "set: %s option isn't a boolean"); 580 rval = 1; 581 break; 582 } 583 if (qmark || !equals) { 584 if (!disp) 585 disp = SELECT_DISPLAY; 586 F_SET(spo, OPT_SELECTED); 587 break; 588 } 589 590 if (!isdigit(sep[0])) 591 goto badnum; 592 if ((nret = 593 nget_uslong(&value, sep, &endp, 10)) != NUM_OK) { 594 p = msg_print(sp, name, &nf); 595 t = msg_print(sp, sep, &nf2); 596 switch (nret) { 597 case NUM_ERR: 598 msgq(sp, M_SYSERR, 599 "set: %s option: %s", p, t); 600 break; 601 case NUM_OVER: 602 msgq(sp, M_ERR, 603 "set: %s option: %s: value overflow", p, t); 604 break; 605 case NUM_OK: 606 case NUM_UNDER: 607 abort(); 608 } 609 if (nf) 610 FREE_SPACE(sp, p, 0); 611 if (nf2) 612 FREE_SPACE(sp, t, 0); 613 rval = 1; 614 break; 615 } 616 if (*endp && !isblank(*endp)) { 617 badnum: p = msg_print(sp, name, &nf); 618 t = msg_print(sp, sep, &nf2); 619 msgq(sp, M_ERR, 620 "set: %s option: %s is an illegal number", p, t); 621 if (nf) 622 FREE_SPACE(sp, p, 0); 623 if (nf2) 624 FREE_SPACE(sp, t, 0); 625 rval = 1; 626 break; 627 } 628 629 /* Some options may never be set to zero. */ 630 if (F_ISSET(op, OPT_NOZERO) && value == 0) { 631 msgq_str(sp, M_ERR, name, 632 "set: the %s option may never be set to 0"); 633 rval = 1; 634 break; 635 } 636 637 /* 638 * Do nothing if the value is unchanged, the underlying 639 * functions can be expensive. 640 */ 641 if (!F_ISSET(op, OPT_ALWAYS) && 642 O_VAL(sp, offset) == value) 643 break; 644 645 if (F_ISSET(op, OPT_EARLYSET)) { 646 /* Set the value. */ 647 if (o_set(sp, offset, 0, NULL, value)) { 648 rval = 1; 649 break; 650 } 651 } 652 653 /* Report to subsystems. */ 654 if ((op->func != NULL && 655 op->func(sp, spo, sep, &value)) || 656 ex_optchange(sp, offset, sep, &value) || 657 v_optchange(sp, offset, sep, &value) || 658 sp->gp->scr_optchange(sp, offset, sep, &value)) { 659 rval = 1; 660 break; 661 } 662 663 if (!F_ISSET(op, OPT_EARLYSET)) { 664 /* Set the value. */ 665 if (o_set(sp, offset, 0, NULL, value)) 666 rval = 1; 667 } 668 break; 669 case OPT_STR: 670 if (turnoff) { 671 msgq_str(sp, M_ERR, name, 672 "set: %s option isn't a boolean"); 673 rval = 1; 674 break; 675 } 676 if (qmark || !equals) { 677 if (!disp) 678 disp = SELECT_DISPLAY; 679 F_SET(spo, OPT_SELECTED); 680 break; 681 } 682 683 /* 684 * Do nothing if the value is unchanged, the underlying 685 * functions can be expensive. 686 */ 687 if (!F_ISSET(op, OPT_ALWAYS) && 688 O_STR(sp, offset) != NULL && 689 !strcmp(O_STR(sp, offset), sep)) 690 break; 691 692 if (F_ISSET(op, OPT_EARLYSET)) { 693 /* Set the value. */ 694 if (o_set(sp, offset, OS_STRDUP, sep, 0)) { 695 rval = 1; 696 break; 697 } 698 } 699 700 /* Report to subsystems. */ 701 if ((op->func != NULL && 702 op->func(sp, spo, sep, NULL)) || 703 ex_optchange(sp, offset, sep, NULL) || 704 v_optchange(sp, offset, sep, NULL) || 705 sp->gp->scr_optchange(sp, offset, sep, NULL)) { 706 rval = 1; 707 break; 708 } 709 710 if (!F_ISSET(op, OPT_EARLYSET)) { 711 /* Set the value. */ 712 if (o_set(sp, offset, OS_STRDUP, sep, 0)) 713 rval = 1; 714 } 715 break; 716 default: 717 abort(); 718 } 719 } 720 if (disp != NO_DISPLAY) 721 opts_dump(sp, disp); 722 return (rval); 723 } 724 725 /* 726 * o_set -- 727 * Set an option's value. 728 * 729 * PUBLIC: int o_set(SCR *, int, u_int, char *, u_long); 730 */ 731 int 732 o_set(SCR *sp, int opt, u_int flags, char *str, u_long val) 733 { 734 OPTION *op; 735 736 /* Set a pointer to the options area. */ 737 op = F_ISSET(&sp->opts[opt], OPT_GLOBAL) ? 738 &sp->gp->opts[sp->opts[opt].o_cur.val] : &sp->opts[opt]; 739 740 /* Copy the string, if requested. */ 741 if (LF_ISSET(OS_STRDUP) && (str = strdup(str)) == NULL) { 742 msgq(sp, M_SYSERR, NULL); 743 return (1); 744 } 745 746 /* Free the previous string, if requested, and set the value. */ 747 if (LF_ISSET(OS_DEF)) 748 if (LF_ISSET(OS_STR | OS_STRDUP)) { 749 if (!LF_ISSET(OS_NOFREE) && op->o_def.str != NULL) 750 free(op->o_def.str); 751 op->o_def.str = str; 752 } else 753 op->o_def.val = val; 754 else 755 if (LF_ISSET(OS_STR | OS_STRDUP)) { 756 if (!LF_ISSET(OS_NOFREE) && op->o_cur.str != NULL) 757 free(op->o_cur.str); 758 op->o_cur.str = str; 759 } else 760 op->o_cur.val = val; 761 return (0); 762 } 763 764 /* 765 * opts_empty -- 766 * Return 1 if the string option is invalid, 0 if it's OK. 767 * 768 * PUBLIC: int opts_empty(SCR *, int, int); 769 */ 770 int 771 opts_empty(SCR *sp, int off, int silent) 772 { 773 char *p; 774 775 if ((p = O_STR(sp, off)) == NULL || p[0] == '\0') { 776 if (!silent) 777 msgq_str(sp, M_ERR, optlist[off].name, 778 "No %s edit option specified"); 779 return (1); 780 } 781 return (0); 782 } 783 784 /* 785 * opts_dump -- 786 * List the current values of selected options. 787 * 788 * PUBLIC: void opts_dump(SCR *, enum optdisp); 789 */ 790 void 791 opts_dump(SCR *sp, enum optdisp type) 792 { 793 OPTLIST const *op; 794 int base, b_num, cnt, col, colwidth, curlen, s_num; 795 int numcols, numrows, row; 796 int b_op[O_OPTIONCOUNT], s_op[O_OPTIONCOUNT]; 797 char nbuf[20]; 798 799 /* 800 * Options are output in two groups -- those that fit in a column and 801 * those that don't. Output is done on 6 character "tab" boundaries 802 * for no particular reason. (Since we don't output tab characters, 803 * we can ignore the terminal's tab settings.) Ignore the user's tab 804 * setting because we have no idea how reasonable it is. 805 * 806 * Find a column width we can live with, testing from 10 columns to 1. 807 */ 808 for (numcols = 10; numcols > 1; --numcols) { 809 colwidth = sp->cols / numcols & ~(STANDARD_TAB - 1); 810 if (colwidth >= 10) { 811 colwidth = 812 (colwidth + STANDARD_TAB) & ~(STANDARD_TAB - 1); 813 numcols = sp->cols / colwidth; 814 break; 815 } 816 colwidth = 0; 817 } 818 819 /* 820 * Get the set of options to list, entering them into 821 * the column list or the overflow list. 822 */ 823 for (b_num = s_num = 0, op = optlist; op->name != NULL; ++op) { 824 cnt = op - optlist; 825 826 /* If OPT_NDISP set, it's never displayed. */ 827 if (F_ISSET(op, OPT_NDISP)) 828 continue; 829 830 switch (type) { 831 case ALL_DISPLAY: /* Display all. */ 832 break; 833 case CHANGED_DISPLAY: /* Display changed. */ 834 /* If OPT_ADISP set, it's always "changed". */ 835 if (F_ISSET(op, OPT_ADISP)) 836 break; 837 switch (op->type) { 838 case OPT_0BOOL: 839 case OPT_1BOOL: 840 case OPT_NUM: 841 if (O_VAL(sp, cnt) == O_D_VAL(sp, cnt)) 842 continue; 843 break; 844 case OPT_STR: 845 if (O_STR(sp, cnt) == O_D_STR(sp, cnt) || 846 (O_D_STR(sp, cnt) != NULL && 847 !strcmp(O_STR(sp, cnt), O_D_STR(sp, cnt)))) 848 continue; 849 break; 850 } 851 break; 852 case SELECT_DISPLAY: /* Display selected. */ 853 if (!F_ISSET(&sp->opts[cnt], OPT_SELECTED)) 854 continue; 855 break; 856 default: 857 case NO_DISPLAY: 858 abort(); 859 } 860 F_CLR(&sp->opts[cnt], OPT_SELECTED); 861 862 curlen = strlen(op->name); 863 switch (op->type) { 864 case OPT_0BOOL: 865 case OPT_1BOOL: 866 if (!O_ISSET(sp, cnt)) 867 curlen += 2; 868 break; 869 case OPT_NUM: 870 (void)snprintf(nbuf, 871 sizeof(nbuf), "%ld", O_VAL(sp, cnt)); 872 curlen += strlen(nbuf); 873 break; 874 case OPT_STR: 875 if (O_STR(sp, cnt) != NULL) 876 curlen += strlen(O_STR(sp, cnt)); 877 curlen += 3; 878 break; 879 } 880 /* Offset by 2 so there's a gap. */ 881 if (curlen <= colwidth - 2) 882 s_op[s_num++] = cnt; 883 else 884 b_op[b_num++] = cnt; 885 } 886 887 if (s_num > 0) { 888 /* Figure out the number of rows. */ 889 if (s_num > numcols) { 890 numrows = s_num / numcols; 891 if (s_num % numcols) 892 ++numrows; 893 } else 894 numrows = 1; 895 896 /* Display the options in sorted order. */ 897 for (row = 0; row < numrows;) { 898 for (base = row, col = 0; col < numcols; ++col) { 899 cnt = opts_print(sp, &optlist[s_op[base]]); 900 if ((base += numrows) >= s_num) 901 break; 902 (void)ex_printf(sp, "%*s", 903 (int)(colwidth - cnt), ""); 904 } 905 if (++row < numrows || b_num) 906 (void)ex_puts(sp, "\n"); 907 } 908 } 909 910 for (row = 0; row < b_num;) { 911 (void)opts_print(sp, &optlist[b_op[row]]); 912 if (++row < b_num) 913 (void)ex_puts(sp, "\n"); 914 } 915 (void)ex_puts(sp, "\n"); 916 } 917 918 /* 919 * opts_print -- 920 * Print out an option. 921 */ 922 static int 923 opts_print(SCR *sp, OPTLIST const *op) 924 { 925 int curlen, offset; 926 927 curlen = 0; 928 offset = op - optlist; 929 switch (op->type) { 930 case OPT_0BOOL: 931 case OPT_1BOOL: 932 curlen += ex_printf(sp, 933 "%s%s", O_ISSET(sp, offset) ? "" : "no", op->name); 934 break; 935 case OPT_NUM: 936 curlen += ex_printf(sp, "%s=%ld", op->name, O_VAL(sp, offset)); 937 break; 938 case OPT_STR: 939 curlen += ex_printf(sp, "%s=\"%s\"", op->name, 940 O_STR(sp, offset) == NULL ? "" : O_STR(sp, offset)); 941 break; 942 } 943 return (curlen); 944 } 945 946 /* 947 * opts_save -- 948 * Write the current configuration to a file. 949 * 950 * PUBLIC: int opts_save(SCR *, FILE *); 951 */ 952 int 953 opts_save(SCR *sp, FILE *fp) 954 { 955 OPTLIST const *op; 956 int ch, cnt; 957 char *p; 958 959 for (op = optlist; op->name != NULL; ++op) { 960 if (F_ISSET(op, OPT_NOSAVE)) 961 continue; 962 cnt = op - optlist; 963 switch (op->type) { 964 case OPT_0BOOL: 965 case OPT_1BOOL: 966 if (O_ISSET(sp, cnt)) 967 (void)fprintf(fp, "set %s\n", op->name); 968 else 969 (void)fprintf(fp, "set no%s\n", op->name); 970 break; 971 case OPT_NUM: 972 (void)fprintf(fp, 973 "set %s=%-3ld\n", op->name, O_VAL(sp, cnt)); 974 break; 975 case OPT_STR: 976 if (O_STR(sp, cnt) == NULL) 977 break; 978 (void)fprintf(fp, "set "); 979 for (p = op->name; (ch = *p) != '\0'; ++p) { 980 if (isblank(ch) || ch == '\\') 981 (void)putc('\\', fp); 982 (void)putc(ch, fp); 983 } 984 (void)putc('=', fp); 985 for (p = O_STR(sp, cnt); (ch = *p) != '\0'; ++p) { 986 if (isblank(ch) || ch == '\\') 987 (void)putc('\\', fp); 988 (void)putc(ch, fp); 989 } 990 (void)putc('\n', fp); 991 break; 992 } 993 if (ferror(fp)) { 994 msgq(sp, M_SYSERR, NULL); 995 return (1); 996 } 997 } 998 return (0); 999 } 1000 1001 /* 1002 * opts_search -- 1003 * Search for an option. 1004 * 1005 * PUBLIC: OPTLIST const *opts_search(char *); 1006 */ 1007 OPTLIST const * 1008 opts_search(char *name) 1009 { 1010 OPTLIST const *op, *found; 1011 OABBREV atmp, *ap; 1012 OPTLIST otmp; 1013 size_t len; 1014 1015 /* Check list of abbreviations. */ 1016 atmp.name = name; 1017 if ((ap = bsearch(&atmp, abbrev, sizeof(abbrev) / sizeof(OABBREV) - 1, 1018 sizeof(OABBREV), opts_abbcmp)) != NULL) 1019 return (optlist + ap->offset); 1020 1021 /* Check list of options. */ 1022 otmp.name = name; 1023 if ((op = bsearch(&otmp, optlist, sizeof(optlist) / sizeof(OPTLIST) - 1, 1024 sizeof(OPTLIST), opts_cmp)) != NULL) 1025 return (op); 1026 1027 /* 1028 * Check to see if the name is the prefix of one (and only one) 1029 * option. If so, return the option. 1030 */ 1031 len = strlen(name); 1032 for (found = NULL, op = optlist; op->name != NULL; ++op) { 1033 if (op->name[0] < name[0]) 1034 continue; 1035 if (op->name[0] > name[0]) 1036 break; 1037 if (!memcmp(op->name, name, len)) { 1038 if (found != NULL) 1039 return (NULL); 1040 found = op; 1041 } 1042 } 1043 return (found); 1044 } 1045 1046 /* 1047 * opts_nomatch -- 1048 * Standard nomatch error message for options. 1049 * 1050 * PUBLIC: void opts_nomatch(SCR *, char *); 1051 */ 1052 void 1053 opts_nomatch(SCR *sp, char *name) 1054 { 1055 msgq_str(sp, M_ERR, name, 1056 "set: no %s option: 'set all' gives all option values"); 1057 } 1058 1059 static int 1060 opts_abbcmp(const void *a, const void *b) 1061 { 1062 return(strcmp(((OABBREV *)a)->name, ((OABBREV *)b)->name)); 1063 } 1064 1065 static int 1066 opts_cmp(const void *a, const void *b) 1067 { 1068 return(strcmp(((OPTLIST *)a)->name, ((OPTLIST *)b)->name)); 1069 } 1070 1071 /* 1072 * opts_copy -- 1073 * Copy a screen's OPTION array. 1074 * 1075 * PUBLIC: int opts_copy(SCR *, SCR *); 1076 */ 1077 int 1078 opts_copy(SCR *orig, SCR *sp) 1079 { 1080 int cnt, rval; 1081 1082 /* Copy most everything without change. */ 1083 memcpy(sp->opts, orig->opts, sizeof(orig->opts)); 1084 1085 /* Copy the string edit options. */ 1086 for (cnt = rval = 0; cnt < O_OPTIONCOUNT; ++cnt) { 1087 if (optlist[cnt].type != OPT_STR || 1088 F_ISSET(&optlist[cnt], OPT_GLOBAL)) 1089 continue; 1090 /* 1091 * If never set, or already failed, NULL out the entries -- 1092 * have to continue after failure, otherwise would have two 1093 * screens referencing the same memory. 1094 */ 1095 if (rval || O_STR(sp, cnt) == NULL) { 1096 o_set(sp, cnt, OS_NOFREE | OS_STR, NULL, 0); 1097 o_set(sp, cnt, OS_DEF | OS_NOFREE | OS_STR, NULL, 0); 1098 continue; 1099 } 1100 1101 /* Copy the current string. */ 1102 if (o_set(sp, cnt, OS_NOFREE | OS_STRDUP, O_STR(sp, cnt), 0)) { 1103 o_set(sp, cnt, OS_DEF | OS_NOFREE | OS_STR, NULL, 0); 1104 goto nomem; 1105 } 1106 1107 /* Copy the default string. */ 1108 if (O_D_STR(sp, cnt) != NULL && o_set(sp, cnt, 1109 OS_DEF | OS_NOFREE | OS_STRDUP, O_D_STR(sp, cnt), 0)) { 1110 nomem: msgq(orig, M_SYSERR, NULL); 1111 rval = 1; 1112 } 1113 } 1114 return (rval); 1115 } 1116 1117 /* 1118 * opts_free -- 1119 * Free all option strings 1120 * 1121 * PUBLIC: void opts_free(SCR *); 1122 */ 1123 void 1124 opts_free(SCR *sp) 1125 { 1126 int cnt; 1127 1128 for (cnt = 0; cnt < O_OPTIONCOUNT; ++cnt) { 1129 if (optlist[cnt].type != OPT_STR || 1130 F_ISSET(&optlist[cnt], OPT_GLOBAL)) 1131 continue; 1132 if (O_STR(sp, cnt) != NULL) 1133 free(O_STR(sp, cnt)); 1134 if (O_D_STR(sp, cnt) != NULL) 1135 free(O_D_STR(sp, cnt)); 1136 } 1137 } 1138