1 /* $OpenBSD: options.c,v 1.16 2011/07/10 13:20:25 millert 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 <stdio.h> 24 #include <stdlib.h> 25 #include <string.h> 26 #include <unistd.h> 27 28 #include "common.h" 29 #include "../vi/vi.h" 30 #include "pathnames.h" 31 32 static int opts_abbcmp(const void *, const void *); 33 static int opts_cmp(const void *, const void *); 34 static int opts_print(SCR *, OPTLIST const *); 35 36 /* 37 * O'Reilly noted options and abbreviations are from "Learning the VI Editor", 38 * Fifth Edition, May 1992. There's no way of knowing what systems they are 39 * actually from. 40 * 41 * HPUX noted options and abbreviations are from "The Ultimate Guide to the 42 * VI and EX Text Editors", 1990. 43 */ 44 OPTLIST const optlist[] = { 45 /* O_ALTWERASE 4.4BSD */ 46 {"altwerase", f_altwerase, OPT_0BOOL, 0}, 47 /* O_AUTOINDENT 4BSD */ 48 {"autoindent", NULL, OPT_0BOOL, 0}, 49 /* O_AUTOPRINT 4BSD */ 50 {"autoprint", NULL, OPT_1BOOL, 0}, 51 /* O_AUTOWRITE 4BSD */ 52 {"autowrite", NULL, OPT_0BOOL, 0}, 53 /* O_BACKUP 4.4BSD */ 54 {"backup", NULL, OPT_STR, 0}, 55 /* O_BEAUTIFY 4BSD */ 56 {"beautify", NULL, OPT_0BOOL, 0}, 57 /* O_CDPATH 4.4BSD */ 58 {"cdpath", NULL, OPT_STR, 0}, 59 /* O_CEDIT 4.4BSD */ 60 {"cedit", NULL, OPT_STR, 0}, 61 /* O_COLUMNS 4.4BSD */ 62 {"columns", f_columns, OPT_NUM, OPT_NOSAVE}, 63 /* O_COMMENT 4.4BSD */ 64 {"comment", NULL, OPT_0BOOL, 0}, 65 /* O_TMP_DIRECTORY 4BSD */ 66 {"directory", NULL, OPT_STR, 0}, 67 /* O_EDCOMPATIBLE 4BSD */ 68 {"edcompatible",NULL, OPT_0BOOL, 0}, 69 /* O_ESCAPETIME 4.4BSD */ 70 {"escapetime", NULL, OPT_NUM, 0}, 71 /* O_ERRORBELLS 4BSD */ 72 {"errorbells", NULL, OPT_0BOOL, 0}, 73 /* O_EXRC System V (undocumented) */ 74 {"exrc", NULL, OPT_0BOOL, 0}, 75 /* O_EXTENDED 4.4BSD */ 76 {"extended", f_recompile, OPT_0BOOL, 0}, 77 /* O_FILEC 4.4BSD */ 78 {"filec", NULL, OPT_STR, 0}, 79 /* O_FLASH HPUX */ 80 {"flash", NULL, OPT_0BOOL, 0}, 81 /* O_HARDTABS 4BSD */ 82 {"hardtabs", NULL, OPT_NUM, 0}, 83 /* O_ICLOWER 4.4BSD */ 84 {"iclower", f_recompile, OPT_0BOOL, 0}, 85 /* O_IGNORECASE 4BSD */ 86 {"ignorecase", f_recompile, OPT_0BOOL, 0}, 87 /* O_KEYTIME 4.4BSD */ 88 {"keytime", NULL, OPT_NUM, 0}, 89 /* O_LEFTRIGHT 4.4BSD */ 90 {"leftright", f_reformat, OPT_0BOOL, 0}, 91 /* O_LINES 4.4BSD */ 92 {"lines", f_lines, OPT_NUM, OPT_NOSAVE}, 93 /* O_LISP 4BSD 94 * XXX 95 * When the lisp option is implemented, delete the OPT_NOSAVE flag, 96 * so that :mkexrc dumps it. 97 */ 98 {"lisp", f_lisp, OPT_0BOOL, OPT_NOSAVE}, 99 /* O_LIST 4BSD */ 100 {"list", f_reformat, OPT_0BOOL, 0}, 101 /* O_LOCKFILES 4.4BSD 102 * XXX 103 * Locking isn't reliable enough over NFS to require it, in addition, 104 * it's a serious startup performance problem over some remote links. 105 */ 106 {"lock", NULL, OPT_1BOOL, 0}, 107 /* O_MAGIC 4BSD */ 108 {"magic", NULL, OPT_1BOOL, 0}, 109 /* O_MATCHTIME 4.4BSD */ 110 {"matchtime", NULL, OPT_NUM, 0}, 111 /* O_MESG 4BSD */ 112 {"mesg", NULL, OPT_1BOOL, 0}, 113 /* O_MODELINE 4BSD 114 * !!! 115 * This has been documented in historical systems as both "modeline" 116 * and as "modelines". Regardless of the name, this option represents 117 * a security problem of mammoth proportions, not to mention a stunning 118 * example of what your intro CS professor referred to as the perils of 119 * mixing code and data. Don't add it, or I will kill you. 120 */ 121 {"modeline", NULL, OPT_0BOOL, OPT_NOSET}, 122 /* O_MSGCAT 4.4BSD */ 123 {"msgcat", f_msgcat, OPT_STR, 0}, 124 /* O_NOPRINT 4.4BSD */ 125 {"noprint", f_print, OPT_STR, OPT_EARLYSET}, 126 /* O_NUMBER 4BSD */ 127 {"number", f_reformat, OPT_0BOOL, 0}, 128 /* O_OCTAL 4.4BSD */ 129 {"octal", f_print, OPT_0BOOL, OPT_EARLYSET}, 130 /* O_OPEN 4BSD */ 131 {"open", NULL, OPT_1BOOL, 0}, 132 /* O_OPTIMIZE 4BSD */ 133 {"optimize", NULL, OPT_1BOOL, 0}, 134 /* O_PARAGRAPHS 4BSD */ 135 {"paragraphs", f_paragraph, OPT_STR, 0}, 136 /* O_PATH 4.4BSD */ 137 {"path", NULL, OPT_STR, 0}, 138 /* O_PRINT 4.4BSD */ 139 {"print", f_print, OPT_STR, OPT_EARLYSET}, 140 /* O_PROMPT 4BSD */ 141 {"prompt", NULL, OPT_1BOOL, 0}, 142 /* O_READONLY 4BSD (undocumented) */ 143 {"readonly", f_readonly, OPT_0BOOL, OPT_ALWAYS}, 144 /* O_RECDIR 4.4BSD */ 145 {"recdir", NULL, OPT_STR, 0}, 146 /* O_REDRAW 4BSD */ 147 {"redraw", NULL, OPT_0BOOL, 0}, 148 /* O_REMAP 4BSD */ 149 {"remap", NULL, OPT_1BOOL, 0}, 150 /* O_REPORT 4BSD */ 151 {"report", NULL, OPT_NUM, 0}, 152 /* O_RULER 4.4BSD */ 153 {"ruler", NULL, OPT_0BOOL, 0}, 154 /* O_SCROLL 4BSD */ 155 {"scroll", NULL, OPT_NUM, 0}, 156 /* O_SEARCHINCR 4.4BSD */ 157 {"searchincr", NULL, OPT_0BOOL, 0}, 158 /* O_SECTIONS 4BSD */ 159 {"sections", f_section, OPT_STR, 0}, 160 /* O_SECURE 4.4BSD */ 161 {"secure", NULL, OPT_0BOOL, OPT_NOUNSET}, 162 /* O_SHELL 4BSD */ 163 {"shell", NULL, OPT_STR, 0}, 164 /* O_SHELLMETA 4.4BSD */ 165 {"shellmeta", NULL, OPT_STR, 0}, 166 /* O_SHIFTWIDTH 4BSD */ 167 {"shiftwidth", NULL, OPT_NUM, OPT_NOZERO}, 168 /* O_SHOWMATCH 4BSD */ 169 {"showmatch", NULL, OPT_0BOOL, 0}, 170 /* O_SHOWMODE 4.4BSD */ 171 {"showmode", NULL, OPT_0BOOL, 0}, 172 /* O_SIDESCROLL 4.4BSD */ 173 {"sidescroll", NULL, OPT_NUM, OPT_NOZERO}, 174 /* O_SLOWOPEN 4BSD */ 175 {"slowopen", NULL, OPT_0BOOL, 0}, 176 /* O_SOURCEANY 4BSD (undocumented) 177 * !!! 178 * Historic vi, on startup, source'd $HOME/.exrc and ./.exrc, if they 179 * were owned by the user. The sourceany option was an undocumented 180 * feature of historic vi which permitted the startup source'ing of 181 * .exrc files the user didn't own. This is an obvious security problem, 182 * and we ignore the option. 183 */ 184 {"sourceany", NULL, OPT_0BOOL, OPT_NOSET}, 185 /* O_TABSTOP 4BSD */ 186 {"tabstop", f_reformat, OPT_NUM, OPT_NOZERO}, 187 /* O_TAGLENGTH 4BSD */ 188 {"taglength", NULL, OPT_NUM, 0}, 189 /* O_TAGS 4BSD */ 190 {"tags", NULL, OPT_STR, 0}, 191 /* O_TERM 4BSD 192 * !!! 193 * By default, the historic vi always displayed information about two 194 * options, redraw and term. Term seems sufficient. 195 */ 196 {"term", NULL, OPT_STR, OPT_ADISP|OPT_NOSAVE}, 197 /* O_TERSE 4BSD */ 198 {"terse", NULL, OPT_0BOOL, 0}, 199 /* O_TILDEOP 4.4BSD */ 200 {"tildeop", NULL, OPT_0BOOL, 0}, 201 /* O_TIMEOUT 4BSD (undocumented) */ 202 {"timeout", NULL, OPT_1BOOL, 0}, 203 /* O_TTYWERASE 4.4BSD */ 204 {"ttywerase", f_ttywerase, OPT_0BOOL, 0}, 205 /* O_VERBOSE 4.4BSD */ 206 {"verbose", NULL, OPT_0BOOL, 0}, 207 /* O_W1200 4BSD */ 208 {"w1200", f_w1200, OPT_NUM, OPT_NDISP|OPT_NOSAVE}, 209 /* O_W300 4BSD */ 210 {"w300", f_w300, OPT_NUM, OPT_NDISP|OPT_NOSAVE}, 211 /* O_W9600 4BSD */ 212 {"w9600", f_w9600, OPT_NUM, OPT_NDISP|OPT_NOSAVE}, 213 /* O_WARN 4BSD */ 214 {"warn", NULL, OPT_1BOOL, 0}, 215 /* O_WINDOW 4BSD */ 216 {"window", f_window, OPT_NUM, 0}, 217 /* O_WINDOWNAME 4BSD */ 218 {"windowname", NULL, OPT_0BOOL, 0}, 219 /* O_WRAPLEN 4.4BSD */ 220 {"wraplen", NULL, OPT_NUM, 0}, 221 /* O_WRAPMARGIN 4BSD */ 222 {"wrapmargin", NULL, OPT_NUM, 0}, 223 /* O_WRAPSCAN 4BSD */ 224 {"wrapscan", NULL, OPT_1BOOL, 0}, 225 /* O_WRITEANY 4BSD */ 226 {"writeany", NULL, OPT_0BOOL, 0}, 227 {NULL}, 228 }; 229 230 typedef struct abbrev { 231 char *name; 232 int offset; 233 } OABBREV; 234 235 static OABBREV const abbrev[] = { 236 {"ai", O_AUTOINDENT}, /* 4BSD */ 237 {"ap", O_AUTOPRINT}, /* 4BSD */ 238 {"aw", O_AUTOWRITE}, /* 4BSD */ 239 {"bf", O_BEAUTIFY}, /* 4BSD */ 240 {"co", O_COLUMNS}, /* 4.4BSD */ 241 {"dir", O_TMP_DIRECTORY}, /* 4BSD */ 242 {"eb", O_ERRORBELLS}, /* 4BSD */ 243 {"ed", O_EDCOMPATIBLE}, /* 4BSD */ 244 {"ex", O_EXRC}, /* System V (undocumented) */ 245 {"ht", O_HARDTABS}, /* 4BSD */ 246 {"ic", O_IGNORECASE}, /* 4BSD */ 247 {"li", O_LINES}, /* 4.4BSD */ 248 {"modelines", O_MODELINE}, /* HPUX */ 249 {"nu", O_NUMBER}, /* 4BSD */ 250 {"opt", O_OPTIMIZE}, /* 4BSD */ 251 {"para", O_PARAGRAPHS}, /* 4BSD */ 252 {"re", O_REDRAW}, /* O'Reilly */ 253 {"ro", O_READONLY}, /* 4BSD (undocumented) */ 254 {"scr", O_SCROLL}, /* 4BSD (undocumented) */ 255 {"sect", O_SECTIONS}, /* O'Reilly */ 256 {"sh", O_SHELL}, /* 4BSD */ 257 {"slow", O_SLOWOPEN}, /* 4BSD */ 258 {"sm", O_SHOWMATCH}, /* 4BSD */ 259 {"smd", O_SHOWMODE}, /* 4BSD */ 260 {"sw", O_SHIFTWIDTH}, /* 4BSD */ 261 {"tag", O_TAGS}, /* 4BSD (undocumented) */ 262 {"tl", O_TAGLENGTH}, /* 4BSD */ 263 {"to", O_TIMEOUT}, /* 4BSD (undocumented) */ 264 {"ts", O_TABSTOP}, /* 4BSD */ 265 {"tty", O_TERM}, /* 4BSD (undocumented) */ 266 {"ttytype", O_TERM}, /* 4BSD (undocumented) */ 267 {"w", O_WINDOW}, /* O'Reilly */ 268 {"wa", O_WRITEANY}, /* 4BSD */ 269 {"wi", O_WINDOW}, /* 4BSD (undocumented) */ 270 {"wl", O_WRAPLEN}, /* 4.4BSD */ 271 {"wm", O_WRAPMARGIN}, /* 4BSD */ 272 {"ws", O_WRAPSCAN}, /* 4BSD */ 273 {NULL}, 274 }; 275 276 /* 277 * opts_init -- 278 * Initialize some of the options. 279 * 280 * PUBLIC: int opts_init(SCR *, int *); 281 */ 282 int 283 opts_init(sp, oargs) 284 SCR *sp; 285 int *oargs; 286 { 287 ARGS *argv[2], a, b; 288 OPTLIST const *op; 289 u_long v; 290 int optindx; 291 char *s, b1[1024]; 292 293 a.bp = b1; 294 b.bp = NULL; 295 a.len = b.len = 0; 296 argv[0] = &a; 297 argv[1] = &b; 298 299 /* Set numeric and string default values. */ 300 #define OI(indx, str) { \ 301 if ((str) != b1) /* GCC puts strings in text-space. */ \ 302 (void)strlcpy(b1, (str), sizeof(b1)); \ 303 a.len = strlen(b1); \ 304 if (opts_set(sp, argv, NULL)) { \ 305 optindx = indx; \ 306 goto err; \ 307 } \ 308 } 309 /* 310 * Indirect global options to global space. Specifically, set up 311 * terminal, lines, columns first, they're used by other options. 312 * Note, don't set the flags until we've set up the indirection. 313 */ 314 if (o_set(sp, O_TERM, 0, NULL, GO_TERM)) { 315 optindx = O_TERM; 316 goto err; 317 } 318 F_SET(&sp->opts[O_TERM], OPT_GLOBAL); 319 if (o_set(sp, O_LINES, 0, NULL, GO_LINES)) { 320 optindx = O_LINES; 321 goto err; 322 } 323 F_SET(&sp->opts[O_LINES], OPT_GLOBAL); 324 if (o_set(sp, O_COLUMNS, 0, NULL, GO_COLUMNS)) { 325 optindx = O_COLUMNS; 326 goto err; 327 } 328 F_SET(&sp->opts[O_COLUMNS], OPT_GLOBAL); 329 if (o_set(sp, O_SECURE, 0, NULL, GO_SECURE)) { 330 optindx = O_SECURE; 331 goto err; 332 } 333 F_SET(&sp->opts[O_SECURE], OPT_GLOBAL); 334 335 /* Initialize string values. */ 336 (void)snprintf(b1, sizeof(b1), 337 "cdpath=%s", (s = getenv("CDPATH")) == NULL ? ":" : s); 338 OI(O_CDPATH, b1); 339 340 /* 341 * !!! 342 * Vi historically stored temporary files in /var/tmp. We store them 343 * in /tmp by default, hoping it's a memory based file system. There 344 * are two ways to change this -- the user can set either the directory 345 * option or the TMPDIR environmental variable. 346 */ 347 (void)snprintf(b1, sizeof(b1), 348 "directory=%s", (s = getenv("TMPDIR")) == NULL ? _PATH_TMP : s); 349 OI(O_TMP_DIRECTORY, b1); 350 OI(O_ESCAPETIME, "escapetime=1"); 351 OI(O_KEYTIME, "keytime=6"); 352 OI(O_MATCHTIME, "matchtime=7"); 353 (void)snprintf(b1, sizeof(b1), "msgcat=%s", _PATH_MSGCAT); 354 OI(O_MSGCAT, b1); 355 OI(O_REPORT, "report=5"); 356 OI(O_PARAGRAPHS, "paragraphs=IPLPPPQPP LIpplpipbp"); 357 (void)snprintf(b1, sizeof(b1), "path=%s", ""); 358 OI(O_PATH, b1); 359 (void)snprintf(b1, sizeof(b1), "recdir=%s", _PATH_PRESERVE); 360 OI(O_RECDIR, b1); 361 OI(O_SECTIONS, "sections=NHSHH HUnhsh"); 362 (void)snprintf(b1, sizeof(b1), 363 "shell=%s", (s = getenv("SHELL")) == NULL ? _PATH_BSHELL : s); 364 OI(O_SHELL, b1); 365 OI(O_SHELLMETA, "shellmeta=~{[*?$`'\"\\"); 366 OI(O_SHIFTWIDTH, "shiftwidth=8"); 367 OI(O_SIDESCROLL, "sidescroll=16"); 368 OI(O_TABSTOP, "tabstop=8"); 369 (void)snprintf(b1, sizeof(b1), "tags=%s", _PATH_TAGS); 370 OI(O_TAGS, b1); 371 372 /* 373 * XXX 374 * Initialize O_SCROLL here, after term; initializing term should 375 * have created a LINES/COLUMNS value. 376 */ 377 if ((v = (O_VAL(sp, O_LINES) - 1) / 2) == 0) 378 v = 1; 379 (void)snprintf(b1, sizeof(b1), "scroll=%ld", v); 380 OI(O_SCROLL, b1); 381 382 /* 383 * The default window option values are: 384 * 8 if baud rate <= 600 385 * 16 if baud rate <= 1200 386 * LINES - 1 if baud rate > 1200 387 * 388 * Note, the windows option code will correct any too-large value 389 * or when the O_LINES value is 1. 390 */ 391 if (sp->gp->scr_baud(sp, &v)) 392 return (1); 393 if (v <= 600) 394 v = 8; 395 else if (v <= 1200) 396 v = 16; 397 else 398 v = O_VAL(sp, O_LINES) - 1; 399 (void)snprintf(b1, sizeof(b1), "window=%lu", v); 400 OI(O_WINDOW, b1); 401 402 /* 403 * Set boolean default values, and copy all settings into the default 404 * information. OS_NOFREE is set, we're copying, not replacing. 405 */ 406 for (op = optlist, optindx = 0; op->name != NULL; ++op, ++optindx) 407 switch (op->type) { 408 case OPT_0BOOL: 409 break; 410 case OPT_1BOOL: 411 O_SET(sp, optindx); 412 O_D_SET(sp, optindx); 413 break; 414 case OPT_NUM: 415 o_set(sp, optindx, OS_DEF, NULL, O_VAL(sp, optindx)); 416 break; 417 case OPT_STR: 418 if (O_STR(sp, optindx) != NULL && o_set(sp, optindx, 419 OS_DEF | OS_NOFREE | OS_STRDUP, O_STR(sp, optindx), 0)) 420 goto err; 421 break; 422 default: 423 abort(); 424 } 425 426 /* 427 * !!! 428 * Some options can be initialized by the command name or the 429 * command-line arguments. They don't set the default values, 430 * it's historic practice. 431 */ 432 for (; *oargs != -1; ++oargs) 433 OI(*oargs, optlist[*oargs].name); 434 return (0); 435 #undef OI 436 437 err: msgq(sp, M_ERR, 438 "031|Unable to set default %s option", optlist[optindx].name); 439 return (1); 440 } 441 442 /* 443 * opts_set -- 444 * Change the values of one or more options. 445 * 446 * PUBLIC: int opts_set(SCR *, ARGS *[], char *); 447 */ 448 int 449 opts_set(sp, argv, usage) 450 SCR *sp; 451 ARGS *argv[]; 452 char *usage; 453 { 454 enum optdisp disp; 455 enum nresult nret; 456 OPTLIST const *op; 457 OPTION *spo; 458 u_long value, turnoff; 459 int ch, equals, nf, nf2, offset, qmark, rval; 460 char *endp, *name, *p, *sep, *t; 461 462 disp = NO_DISPLAY; 463 for (rval = 0; argv[0]->len != 0; ++argv) { 464 /* 465 * The historic vi dumped the options for each occurrence of 466 * "all" in the set list. Puhleeze. 467 */ 468 if (!strcmp(argv[0]->bp, "all")) { 469 disp = ALL_DISPLAY; 470 continue; 471 } 472 473 /* Find equals sign or question mark. */ 474 for (sep = NULL, equals = qmark = 0, 475 p = name = argv[0]->bp; (ch = *p) != '\0'; ++p) 476 if (ch == '=' || ch == '?') { 477 if (p == name) { 478 if (usage != NULL) 479 msgq(sp, M_ERR, 480 "032|Usage: %s", usage); 481 return (1); 482 } 483 sep = p; 484 if (ch == '=') 485 equals = 1; 486 else 487 qmark = 1; 488 break; 489 } 490 491 turnoff = 0; 492 op = NULL; 493 if (sep != NULL) 494 *sep++ = '\0'; 495 496 /* Search for the name, then name without any leading "no". */ 497 if ((op = opts_search(name)) == NULL && 498 name[0] == 'n' && name[1] == 'o') { 499 turnoff = 1; 500 name += 2; 501 op = opts_search(name); 502 } 503 if (op == NULL) { 504 opts_nomatch(sp, name); 505 rval = 1; 506 continue; 507 } 508 509 /* Find current option values. */ 510 offset = op - optlist; 511 spo = sp->opts + offset; 512 513 /* 514 * !!! 515 * Historically, the question mark could be a separate 516 * argument. 517 */ 518 if (!equals && !qmark && 519 argv[1]->len == 1 && argv[1]->bp[0] == '?') { 520 ++argv; 521 qmark = 1; 522 } 523 524 /* Set name, value. */ 525 switch (op->type) { 526 case OPT_0BOOL: 527 case OPT_1BOOL: 528 /* Some options may not be reset. */ 529 if (F_ISSET(op, OPT_NOUNSET) && turnoff) { 530 msgq_str(sp, M_ERR, name, 531 "291|set: the %s option may not be turned off"); 532 rval = 1; 533 break; 534 } 535 536 /* Some options may not be set. */ 537 if (F_ISSET(op, OPT_NOSET) && !turnoff) { 538 msgq_str(sp, M_ERR, name, 539 "313|set: the %s option may never be turned on"); 540 rval = 1; 541 break; 542 } 543 544 if (equals) { 545 msgq_str(sp, M_ERR, name, 546 "034|set: [no]%s option doesn't take a value"); 547 rval = 1; 548 break; 549 } 550 if (qmark) { 551 if (!disp) 552 disp = SELECT_DISPLAY; 553 F_SET(spo, OPT_SELECTED); 554 break; 555 } 556 557 /* 558 * Do nothing if the value is unchanged, the underlying 559 * functions can be expensive. 560 */ 561 if (!F_ISSET(op, OPT_ALWAYS)) { 562 if (turnoff) { 563 if (!O_ISSET(sp, offset)) 564 break; 565 } else { 566 if (O_ISSET(sp, offset)) 567 break; 568 } 569 } 570 571 if (F_ISSET(op, OPT_EARLYSET)) { 572 /* Set the value. */ 573 if (turnoff) 574 O_CLR(sp, offset); 575 else 576 O_SET(sp, offset); 577 } 578 579 /* Report to subsystems. */ 580 if ((op->func != NULL && 581 op->func(sp, spo, NULL, &turnoff)) || 582 ex_optchange(sp, offset, NULL, &turnoff) || 583 v_optchange(sp, offset, NULL, &turnoff) || 584 sp->gp->scr_optchange(sp, offset, NULL, &turnoff)) { 585 rval = 1; 586 break; 587 } 588 589 if (!F_ISSET(op, OPT_EARLYSET)) { 590 /* Set the value. */ 591 if (turnoff) 592 O_CLR(sp, offset); 593 else 594 O_SET(sp, offset); 595 } 596 break; 597 case OPT_NUM: 598 if (turnoff) { 599 msgq_str(sp, M_ERR, name, 600 "035|set: %s option isn't a boolean"); 601 rval = 1; 602 break; 603 } 604 if (qmark || !equals) { 605 if (!disp) 606 disp = SELECT_DISPLAY; 607 F_SET(spo, OPT_SELECTED); 608 break; 609 } 610 611 if (!isdigit(sep[0])) 612 goto badnum; 613 if ((nret = 614 nget_uslong(&value, sep, &endp, 10)) != NUM_OK) { 615 p = msg_print(sp, name, &nf); 616 t = msg_print(sp, sep, &nf2); 617 switch (nret) { 618 case NUM_ERR: 619 msgq(sp, M_SYSERR, 620 "036|set: %s option: %s", p, t); 621 break; 622 case NUM_OVER: 623 msgq(sp, M_ERR, 624 "037|set: %s option: %s: value overflow", p, t); 625 break; 626 case NUM_OK: 627 case NUM_UNDER: 628 abort(); 629 } 630 if (nf) 631 FREE_SPACE(sp, p, 0); 632 if (nf2) 633 FREE_SPACE(sp, t, 0); 634 rval = 1; 635 break; 636 } 637 if (*endp && !isblank(*endp)) { 638 badnum: p = msg_print(sp, name, &nf); 639 t = msg_print(sp, sep, &nf2); 640 msgq(sp, M_ERR, 641 "038|set: %s option: %s is an illegal number", p, t); 642 if (nf) 643 FREE_SPACE(sp, p, 0); 644 if (nf2) 645 FREE_SPACE(sp, t, 0); 646 rval = 1; 647 break; 648 } 649 650 /* Some options may never be set to zero. */ 651 if (F_ISSET(op, OPT_NOZERO) && value == 0) { 652 msgq_str(sp, M_ERR, name, 653 "314|set: the %s option may never be set to 0"); 654 rval = 1; 655 break; 656 } 657 658 /* 659 * Do nothing if the value is unchanged, the underlying 660 * functions can be expensive. 661 */ 662 if (!F_ISSET(op, OPT_ALWAYS) && 663 O_VAL(sp, offset) == value) 664 break; 665 666 if (F_ISSET(op, OPT_EARLYSET)) { 667 /* Set the value. */ 668 if (o_set(sp, offset, 0, NULL, value)) { 669 rval = 1; 670 break; 671 } 672 } 673 674 /* Report to subsystems. */ 675 if ((op->func != NULL && 676 op->func(sp, spo, sep, &value)) || 677 ex_optchange(sp, offset, sep, &value) || 678 v_optchange(sp, offset, sep, &value) || 679 sp->gp->scr_optchange(sp, offset, sep, &value)) { 680 rval = 1; 681 break; 682 } 683 684 if (!F_ISSET(op, OPT_EARLYSET)) { 685 /* Set the value. */ 686 if (o_set(sp, offset, 0, NULL, value)) 687 rval = 1; 688 } 689 break; 690 case OPT_STR: 691 if (turnoff) { 692 msgq_str(sp, M_ERR, name, 693 "039|set: %s option isn't a boolean"); 694 rval = 1; 695 break; 696 } 697 if (qmark || !equals) { 698 if (!disp) 699 disp = SELECT_DISPLAY; 700 F_SET(spo, OPT_SELECTED); 701 break; 702 } 703 704 /* 705 * Do nothing if the value is unchanged, the underlying 706 * functions can be expensive. 707 */ 708 if (!F_ISSET(op, OPT_ALWAYS) && 709 O_STR(sp, offset) != NULL && 710 !strcmp(O_STR(sp, offset), sep)) 711 break; 712 713 if (F_ISSET(op, OPT_EARLYSET)) { 714 /* Set the value. */ 715 if (o_set(sp, offset, OS_STRDUP, sep, 0)) { 716 rval = 1; 717 break; 718 } 719 } 720 721 /* Report to subsystems. */ 722 if ((op->func != NULL && 723 op->func(sp, spo, sep, NULL)) || 724 ex_optchange(sp, offset, sep, NULL) || 725 v_optchange(sp, offset, sep, NULL) || 726 sp->gp->scr_optchange(sp, offset, sep, NULL)) { 727 rval = 1; 728 break; 729 } 730 731 if (!F_ISSET(op, OPT_EARLYSET)) { 732 /* Set the value. */ 733 if (o_set(sp, offset, OS_STRDUP, sep, 0)) 734 rval = 1; 735 } 736 break; 737 default: 738 abort(); 739 } 740 } 741 if (disp != NO_DISPLAY) 742 opts_dump(sp, disp); 743 return (rval); 744 } 745 746 /* 747 * o_set -- 748 * Set an option's value. 749 * 750 * PUBLIC: int o_set(SCR *, int, u_int, char *, u_long); 751 */ 752 int 753 o_set(sp, opt, flags, str, val) 754 SCR *sp; 755 int opt; 756 u_int flags; 757 char *str; 758 u_long val; 759 { 760 OPTION *op; 761 762 /* Set a pointer to the options area. */ 763 op = F_ISSET(&sp->opts[opt], OPT_GLOBAL) ? 764 &sp->gp->opts[sp->opts[opt].o_cur.val] : &sp->opts[opt]; 765 766 /* Copy the string, if requested. */ 767 if (LF_ISSET(OS_STRDUP) && (str = strdup(str)) == NULL) { 768 msgq(sp, M_SYSERR, NULL); 769 return (1); 770 } 771 772 /* Free the previous string, if requested, and set the value. */ 773 if (LF_ISSET(OS_DEF)) 774 if (LF_ISSET(OS_STR | OS_STRDUP)) { 775 if (!LF_ISSET(OS_NOFREE) && op->o_def.str != NULL) 776 free(op->o_def.str); 777 op->o_def.str = str; 778 } else 779 op->o_def.val = val; 780 else 781 if (LF_ISSET(OS_STR | OS_STRDUP)) { 782 if (!LF_ISSET(OS_NOFREE) && op->o_cur.str != NULL) 783 free(op->o_cur.str); 784 op->o_cur.str = str; 785 } else 786 op->o_cur.val = val; 787 return (0); 788 } 789 790 /* 791 * opts_empty -- 792 * Return 1 if the string option is invalid, 0 if it's OK. 793 * 794 * PUBLIC: int opts_empty(SCR *, int, int); 795 */ 796 int 797 opts_empty(sp, off, silent) 798 SCR *sp; 799 int off, silent; 800 { 801 char *p; 802 803 if ((p = O_STR(sp, off)) == NULL || p[0] == '\0') { 804 if (!silent) 805 msgq_str(sp, M_ERR, optlist[off].name, 806 "305|No %s edit option specified"); 807 return (1); 808 } 809 return (0); 810 } 811 812 /* 813 * opts_dump -- 814 * List the current values of selected options. 815 * 816 * PUBLIC: void opts_dump(SCR *, enum optdisp); 817 */ 818 void 819 opts_dump(sp, type) 820 SCR *sp; 821 enum optdisp type; 822 { 823 OPTLIST const *op; 824 int base, b_num, cnt, col, colwidth, curlen, s_num; 825 int numcols, numrows, row; 826 int b_op[O_OPTIONCOUNT], s_op[O_OPTIONCOUNT]; 827 char nbuf[20]; 828 829 /* 830 * Options are output in two groups -- those that fit in a column and 831 * those that don't. Output is done on 6 character "tab" boundaries 832 * for no particular reason. (Since we don't output tab characters, 833 * we can ignore the terminal's tab settings.) Ignore the user's tab 834 * setting because we have no idea how reasonable it is. 835 * 836 * Find a column width we can live with, testing from 10 columns to 1. 837 */ 838 for (numcols = 10; numcols > 1; --numcols) { 839 colwidth = sp->cols / numcols & ~(STANDARD_TAB - 1); 840 if (colwidth >= 10) { 841 colwidth = 842 (colwidth + STANDARD_TAB) & ~(STANDARD_TAB - 1); 843 numcols = sp->cols / colwidth; 844 break; 845 } 846 colwidth = 0; 847 } 848 849 /* 850 * Get the set of options to list, entering them into 851 * the column list or the overflow list. 852 */ 853 for (b_num = s_num = 0, op = optlist; op->name != NULL; ++op) { 854 cnt = op - optlist; 855 856 /* If OPT_NDISP set, it's never displayed. */ 857 if (F_ISSET(op, OPT_NDISP)) 858 continue; 859 860 switch (type) { 861 case ALL_DISPLAY: /* Display all. */ 862 break; 863 case CHANGED_DISPLAY: /* Display changed. */ 864 /* If OPT_ADISP set, it's always "changed". */ 865 if (F_ISSET(op, OPT_ADISP)) 866 break; 867 switch (op->type) { 868 case OPT_0BOOL: 869 case OPT_1BOOL: 870 case OPT_NUM: 871 if (O_VAL(sp, cnt) == O_D_VAL(sp, cnt)) 872 continue; 873 break; 874 case OPT_STR: 875 if (O_STR(sp, cnt) == O_D_STR(sp, cnt) || 876 (O_D_STR(sp, cnt) != NULL && 877 !strcmp(O_STR(sp, cnt), O_D_STR(sp, cnt)))) 878 continue; 879 break; 880 } 881 break; 882 case SELECT_DISPLAY: /* Display selected. */ 883 if (!F_ISSET(&sp->opts[cnt], OPT_SELECTED)) 884 continue; 885 break; 886 default: 887 case NO_DISPLAY: 888 abort(); 889 } 890 F_CLR(&sp->opts[cnt], OPT_SELECTED); 891 892 curlen = strlen(op->name); 893 switch (op->type) { 894 case OPT_0BOOL: 895 case OPT_1BOOL: 896 if (!O_ISSET(sp, cnt)) 897 curlen += 2; 898 break; 899 case OPT_NUM: 900 (void)snprintf(nbuf, 901 sizeof(nbuf), "%ld", O_VAL(sp, cnt)); 902 curlen += strlen(nbuf); 903 break; 904 case OPT_STR: 905 if (O_STR(sp, cnt) != NULL) 906 curlen += strlen(O_STR(sp, cnt)); 907 curlen += 3; 908 break; 909 } 910 /* Offset by 2 so there's a gap. */ 911 if (curlen <= colwidth - 2) 912 s_op[s_num++] = cnt; 913 else 914 b_op[b_num++] = cnt; 915 } 916 917 if (s_num > 0) { 918 /* Figure out the number of rows. */ 919 if (s_num > numcols) { 920 numrows = s_num / numcols; 921 if (s_num % numcols) 922 ++numrows; 923 } else 924 numrows = 1; 925 926 /* Display the options in sorted order. */ 927 for (row = 0; row < numrows;) { 928 for (base = row, col = 0; col < numcols; ++col) { 929 cnt = opts_print(sp, &optlist[s_op[base]]); 930 if ((base += numrows) >= s_num) 931 break; 932 (void)ex_printf(sp, "%*s", 933 (int)(colwidth - cnt), ""); 934 } 935 if (++row < numrows || b_num) 936 (void)ex_puts(sp, "\n"); 937 } 938 } 939 940 for (row = 0; row < b_num;) { 941 (void)opts_print(sp, &optlist[b_op[row]]); 942 if (++row < b_num) 943 (void)ex_puts(sp, "\n"); 944 } 945 (void)ex_puts(sp, "\n"); 946 } 947 948 /* 949 * opts_print -- 950 * Print out an option. 951 */ 952 static int 953 opts_print(sp, op) 954 SCR *sp; 955 OPTLIST const *op; 956 { 957 int curlen, offset; 958 959 curlen = 0; 960 offset = op - optlist; 961 switch (op->type) { 962 case OPT_0BOOL: 963 case OPT_1BOOL: 964 curlen += ex_printf(sp, 965 "%s%s", O_ISSET(sp, offset) ? "" : "no", op->name); 966 break; 967 case OPT_NUM: 968 curlen += ex_printf(sp, "%s=%ld", op->name, O_VAL(sp, offset)); 969 break; 970 case OPT_STR: 971 curlen += ex_printf(sp, "%s=\"%s\"", op->name, 972 O_STR(sp, offset) == NULL ? "" : O_STR(sp, offset)); 973 break; 974 } 975 return (curlen); 976 } 977 978 /* 979 * opts_save -- 980 * Write the current configuration to a file. 981 * 982 * PUBLIC: int opts_save(SCR *, FILE *); 983 */ 984 int 985 opts_save(sp, fp) 986 SCR *sp; 987 FILE *fp; 988 { 989 OPTLIST const *op; 990 int ch, cnt; 991 char *p; 992 993 for (op = optlist; op->name != NULL; ++op) { 994 if (F_ISSET(op, OPT_NOSAVE)) 995 continue; 996 cnt = op - optlist; 997 switch (op->type) { 998 case OPT_0BOOL: 999 case OPT_1BOOL: 1000 if (O_ISSET(sp, cnt)) 1001 (void)fprintf(fp, "set %s\n", op->name); 1002 else 1003 (void)fprintf(fp, "set no%s\n", op->name); 1004 break; 1005 case OPT_NUM: 1006 (void)fprintf(fp, 1007 "set %s=%-3ld\n", op->name, O_VAL(sp, cnt)); 1008 break; 1009 case OPT_STR: 1010 if (O_STR(sp, cnt) == NULL) 1011 break; 1012 (void)fprintf(fp, "set "); 1013 for (p = op->name; (ch = *p) != '\0'; ++p) { 1014 if (isblank(ch) || ch == '\\') 1015 (void)putc('\\', fp); 1016 (void)putc(ch, fp); 1017 } 1018 (void)putc('=', fp); 1019 for (p = O_STR(sp, cnt); (ch = *p) != '\0'; ++p) { 1020 if (isblank(ch) || ch == '\\') 1021 (void)putc('\\', fp); 1022 (void)putc(ch, fp); 1023 } 1024 (void)putc('\n', fp); 1025 break; 1026 } 1027 if (ferror(fp)) { 1028 msgq(sp, M_SYSERR, NULL); 1029 return (1); 1030 } 1031 } 1032 return (0); 1033 } 1034 1035 /* 1036 * opts_search -- 1037 * Search for an option. 1038 * 1039 * PUBLIC: OPTLIST const *opts_search(char *); 1040 */ 1041 OPTLIST const * 1042 opts_search(name) 1043 char *name; 1044 { 1045 OPTLIST const *op, *found; 1046 OABBREV atmp, *ap; 1047 OPTLIST otmp; 1048 size_t len; 1049 1050 /* Check list of abbreviations. */ 1051 atmp.name = name; 1052 if ((ap = bsearch(&atmp, abbrev, sizeof(abbrev) / sizeof(OABBREV) - 1, 1053 sizeof(OABBREV), opts_abbcmp)) != NULL) 1054 return (optlist + ap->offset); 1055 1056 /* Check list of options. */ 1057 otmp.name = name; 1058 if ((op = bsearch(&otmp, optlist, sizeof(optlist) / sizeof(OPTLIST) - 1, 1059 sizeof(OPTLIST), opts_cmp)) != NULL) 1060 return (op); 1061 1062 /* 1063 * Check to see if the name is the prefix of one (and only one) 1064 * option. If so, return the option. 1065 */ 1066 len = strlen(name); 1067 for (found = NULL, op = optlist; op->name != NULL; ++op) { 1068 if (op->name[0] < name[0]) 1069 continue; 1070 if (op->name[0] > name[0]) 1071 break; 1072 if (!memcmp(op->name, name, len)) { 1073 if (found != NULL) 1074 return (NULL); 1075 found = op; 1076 } 1077 } 1078 return (found); 1079 } 1080 1081 /* 1082 * opts_nomatch -- 1083 * Standard nomatch error message for options. 1084 * 1085 * PUBLIC: void opts_nomatch(SCR *, char *); 1086 */ 1087 void 1088 opts_nomatch(sp, name) 1089 SCR *sp; 1090 char *name; 1091 { 1092 msgq_str(sp, M_ERR, name, 1093 "033|set: no %s option: 'set all' gives all option values"); 1094 } 1095 1096 static int 1097 opts_abbcmp(a, b) 1098 const void *a, *b; 1099 { 1100 return(strcmp(((OABBREV *)a)->name, ((OABBREV *)b)->name)); 1101 } 1102 1103 static int 1104 opts_cmp(a, b) 1105 const void *a, *b; 1106 { 1107 return(strcmp(((OPTLIST *)a)->name, ((OPTLIST *)b)->name)); 1108 } 1109 1110 /* 1111 * opts_copy -- 1112 * Copy a screen's OPTION array. 1113 * 1114 * PUBLIC: int opts_copy(SCR *, SCR *); 1115 */ 1116 int 1117 opts_copy(orig, sp) 1118 SCR *orig, *sp; 1119 { 1120 int cnt, rval; 1121 1122 /* Copy most everything without change. */ 1123 memcpy(sp->opts, orig->opts, sizeof(orig->opts)); 1124 1125 /* Copy the string edit options. */ 1126 for (cnt = rval = 0; cnt < O_OPTIONCOUNT; ++cnt) { 1127 if (optlist[cnt].type != OPT_STR || 1128 F_ISSET(&optlist[cnt], OPT_GLOBAL)) 1129 continue; 1130 /* 1131 * If never set, or already failed, NULL out the entries -- 1132 * have to continue after failure, otherwise would have two 1133 * screens referencing the same memory. 1134 */ 1135 if (rval || O_STR(sp, cnt) == NULL) { 1136 o_set(sp, cnt, OS_NOFREE | OS_STR, NULL, 0); 1137 o_set(sp, cnt, OS_DEF | OS_NOFREE | OS_STR, NULL, 0); 1138 continue; 1139 } 1140 1141 /* Copy the current string. */ 1142 if (o_set(sp, cnt, OS_NOFREE | OS_STRDUP, O_STR(sp, cnt), 0)) { 1143 o_set(sp, cnt, OS_DEF | OS_NOFREE | OS_STR, NULL, 0); 1144 goto nomem; 1145 } 1146 1147 /* Copy the default string. */ 1148 if (O_D_STR(sp, cnt) != NULL && o_set(sp, cnt, 1149 OS_DEF | OS_NOFREE | OS_STRDUP, O_D_STR(sp, cnt), 0)) { 1150 nomem: msgq(orig, M_SYSERR, NULL); 1151 rval = 1; 1152 } 1153 } 1154 return (rval); 1155 } 1156 1157 /* 1158 * opts_free -- 1159 * Free all option strings 1160 * 1161 * PUBLIC: void opts_free(SCR *); 1162 */ 1163 void 1164 opts_free(sp) 1165 SCR *sp; 1166 { 1167 int cnt; 1168 1169 for (cnt = 0; cnt < O_OPTIONCOUNT; ++cnt) { 1170 if (optlist[cnt].type != OPT_STR || 1171 F_ISSET(&optlist[cnt], OPT_GLOBAL)) 1172 continue; 1173 if (O_STR(sp, cnt) != NULL) 1174 free(O_STR(sp, cnt)); 1175 if (O_D_STR(sp, cnt) != NULL) 1176 free(O_D_STR(sp, cnt)); 1177 } 1178 } 1179