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Remove tm.h and xm.h handling, as it wasn't used. Use nm.h only when needed.
[dragonfly.git] / contrib / nvi / common / options.c
blobfe310fc89d91a2a0153ffd739c870a737c7404f5
1 /*-
2 * Copyright (c) 1991, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 1991, 1993, 1994, 1995, 1996
5 * Keith Bostic. All rights reserved.
6 *
7 * See the LICENSE file for redistribution information.
8 */
9
10 #include "config.h"
11
12 #ifndef lint
13 static const char sccsid[] = "@(#)options.c 10.51 (Berkeley) 10/14/96";
14 #endif /* not lint */
15
16 #include <sys/types.h>
17 #include <sys/queue.h>
18 #include <sys/stat.h>
19 #include <sys/time.h>
20
21 #include <bitstring.h>
22 #include <ctype.h>
23 #include <errno.h>
24 #include <limits.h>
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <string.h>
28 #include <unistd.h>
29
30 #include "common.h"
31 #include "../vi/vi.h"
32 #include "pathnames.h"
33
34 static int opts_abbcmp __P((const void *, const void *));
35 static int opts_cmp __P((const void *, const void *));
36 static int opts_print __P((SCR *, OPTLIST const *));
37
38 /*
39 * O'Reilly noted options and abbreviations are from "Learning the VI Editor",
40 * Fifth Edition, May 1992. There's no way of knowing what systems they are
41 * actually from.
42 *
43 * HPUX noted options and abbreviations are from "The Ultimate Guide to the
44 * VI and EX Text Editors", 1990.
45 */
46 OPTLIST const optlist[] = {
47 /* O_ALTWERASE 4.4BSD */
48 {"altwerase", f_altwerase, OPT_0BOOL, 0},
49 /* O_AUTOINDENT 4BSD */
50 {"autoindent", NULL, OPT_0BOOL, 0},
51 /* O_AUTOPRINT 4BSD */
52 {"autoprint", NULL, OPT_1BOOL, 0},
53 /* O_AUTOWRITE 4BSD */
54 {"autowrite", NULL, OPT_0BOOL, 0},
55 /* O_BACKUP 4.4BSD */
56 {"backup", NULL, OPT_STR, 0},
57 /* O_BEAUTIFY 4BSD */
58 {"beautify", NULL, OPT_0BOOL, 0},
59 /* O_CDPATH 4.4BSD */
60 {"cdpath", NULL, OPT_STR, 0},
61 /* O_CEDIT 4.4BSD */
62 {"cedit", NULL, OPT_STR, 0},
63 /* O_COLUMNS 4.4BSD */
64 {"columns", f_columns, OPT_NUM, OPT_NOSAVE},
65 /* O_COMMENT 4.4BSD */
66 {"comment", NULL, OPT_0BOOL, 0},
67 /* O_DIRECTORY 4BSD */
68 {"directory", NULL, OPT_STR, 0},
69 /* O_EDCOMPATIBLE 4BSD */
70 {"edcompatible",NULL, OPT_0BOOL, 0},
71 /* O_ESCAPETIME 4.4BSD */
72 {"escapetime", NULL, OPT_NUM, 0},
73 /* O_ERRORBELLS 4BSD */
74 {"errorbells", NULL, OPT_0BOOL, 0},
75 /* O_EXRC System V (undocumented) */
76 {"exrc", NULL, OPT_0BOOL, 0},
77 /* O_EXTENDED 4.4BSD */
78 {"extended", f_recompile, OPT_0BOOL, 0},
79 /* O_FILEC 4.4BSD */
80 {"filec", NULL, OPT_STR, 0},
81 /* O_FLASH HPUX */
82 {"flash", NULL, OPT_1BOOL, 0},
83 #ifdef GTAGS
84 /* O_GTAGSMODE FreeBSD2.2 */
85 {"gtagsmode", NULL, OPT_0BOOL, 0},
86 #endif
87 /* O_HARDTABS 4BSD */
88 {"hardtabs", NULL, OPT_NUM, 0},
89 /* O_ICLOWER 4.4BSD */
90 {"iclower", f_recompile, OPT_0BOOL, 0},
91 /* O_IGNORECASE 4BSD */
92 {"ignorecase", f_recompile, OPT_0BOOL, 0},
93 /* O_KEYTIME 4.4BSD */
94 {"keytime", NULL, OPT_NUM, 0},
95 /* O_LEFTRIGHT 4.4BSD */
96 {"leftright", f_reformat, OPT_0BOOL, 0},
97 /* O_LINES 4.4BSD */
98 {"lines", f_lines, OPT_NUM, OPT_NOSAVE},
99 /* O_LISP 4BSD
100 * XXX
101 * When the lisp option is implemented, delete the OPT_NOSAVE flag,
102 * so that :mkexrc dumps it.
103 */
104 {"lisp", f_lisp, OPT_0BOOL, OPT_NOSAVE},
105 /* O_LIST 4BSD */
106 {"list", f_reformat, OPT_0BOOL, 0},
107 /* O_LOCKFILES 4.4BSD
108 * XXX
109 * Locking isn't reliable enough over NFS to require it, in addition,
110 * it's a serious startup performance problem over some remote links.
111 */
112 {"lock", NULL, OPT_1BOOL, 0},
113 /* O_MAGIC 4BSD */
114 {"magic", NULL, OPT_1BOOL, 0},
115 /* O_MATCHTIME 4.4BSD */
116 {"matchtime", NULL, OPT_NUM, 0},
117 /* O_MESG 4BSD */
118 {"mesg", NULL, OPT_1BOOL, 0},
119 /* O_MODELINE 4BSD
120 * !!!
121 * This has been documented in historical systems as both "modeline"
122 * and as "modelines". Regardless of the name, this option represents
123 * a security problem of mammoth proportions, not to mention a stunning
124 * example of what your intro CS professor referred to as the perils of
125 * mixing code and data. Don't add it, or I will kill you.
126 */
127 {"modeline", NULL, OPT_0BOOL, OPT_NOSET},
128 /* O_MSGCAT 4.4BSD */
129 {"msgcat", f_msgcat, OPT_STR, 0},
130 /* O_NOPRINT 4.4BSD */
131 {"noprint", f_print, OPT_STR, 0},
132 /* O_NUMBER 4BSD */
133 {"number", f_reformat, OPT_0BOOL, 0},
134 /* O_OCTAL 4.4BSD */
135 {"octal", f_print, OPT_0BOOL, 0},
136 /* O_OPEN 4BSD */
137 {"open", NULL, OPT_1BOOL, 0},
138 /* O_OPTIMIZE 4BSD */
139 {"optimize", NULL, OPT_1BOOL, 0},
140 /* O_PARAGRAPHS 4BSD */
141 {"paragraphs", f_paragraph, OPT_STR, 0},
142 /* O_PATH 4.4BSD */
143 {"path", NULL, OPT_STR, 0},
144 /* O_PRINT 4.4BSD */
145 {"print", f_print, OPT_STR, 0},
146 /* O_PROMPT 4BSD */
147 {"prompt", NULL, OPT_1BOOL, 0},
148 /* O_READONLY 4BSD (undocumented) */
149 {"readonly", f_readonly, OPT_0BOOL, OPT_ALWAYS},
150 /* O_RECDIR 4.4BSD */
151 {"recdir", NULL, OPT_STR, 0},
152 /* O_REDRAW 4BSD */
153 {"redraw", NULL, OPT_0BOOL, 0},
154 /* O_REMAP 4BSD */
155 {"remap", NULL, OPT_1BOOL, 0},
156 /* O_REPORT 4BSD */
157 {"report", NULL, OPT_NUM, 0},
158 /* O_RULER 4.4BSD */
159 {"ruler", NULL, OPT_0BOOL, 0},
160 /* O_SCROLL 4BSD */
161 {"scroll", NULL, OPT_NUM, 0},
162 /* O_SEARCHINCR 4.4BSD */
163 {"searchincr", NULL, OPT_0BOOL, 0},
164 /* O_SECTIONS 4BSD */
165 {"sections", f_section, OPT_STR, 0},
166 /* O_SECURE 4.4BSD */
167 {"secure", NULL, OPT_0BOOL, OPT_NOUNSET},
168 /* O_SHELL 4BSD */
169 {"shell", NULL, OPT_STR, 0},
170 /* O_SHELLMETA 4.4BSD */
171 {"shellmeta", NULL, OPT_STR, 0},
172 /* O_SHIFTWIDTH 4BSD */
173 {"shiftwidth", NULL, OPT_NUM, OPT_NOZERO},
174 /* O_SHOWMATCH 4BSD */
175 {"showmatch", NULL, OPT_0BOOL, 0},
176 /* O_SHOWMODE 4.4BSD */
177 {"showmode", NULL, OPT_0BOOL, 0},
178 /* O_SIDESCROLL 4.4BSD */
179 {"sidescroll", NULL, OPT_NUM, OPT_NOZERO},
180 /* O_SLOWOPEN 4BSD */
181 {"slowopen", NULL, OPT_0BOOL, 0},
182 /* O_SOURCEANY 4BSD (undocumented)
183 * !!!
184 * Historic vi, on startup, source'd $HOME/.exrc and ./.exrc, if they
185 * were owned by the user. The sourceany option was an undocumented
186 * feature of historic vi which permitted the startup source'ing of
187 * .exrc files the user didn't own. This is an obvious security problem,
188 * and we ignore the option.
189 */
190 {"sourceany", NULL, OPT_0BOOL, OPT_NOSET},
191 /* O_TABSTOP 4BSD */
192 {"tabstop", f_reformat, OPT_NUM, OPT_NOZERO},
193 /* O_TAGLENGTH 4BSD */
194 {"taglength", NULL, OPT_NUM, 0},
195 /* O_TAGS 4BSD */
196 {"tags", NULL, OPT_STR, 0},
197 /* O_TERM 4BSD
198 * !!!
199 * By default, the historic vi always displayed information about two
200 * options, redraw and term. Term seems sufficient.
201 */
202 {"term", NULL, OPT_STR, OPT_ADISP|OPT_NOSAVE},
203 /* O_TERSE 4BSD */
204 {"terse", NULL, OPT_0BOOL, 0},
205 /* O_TILDEOP 4.4BSD */
206 {"tildeop", NULL, OPT_0BOOL, 0},
207 /* O_TIMEOUT 4BSD (undocumented) */
208 {"timeout", NULL, OPT_1BOOL, 0},
209 /* O_TTYWERASE 4.4BSD */
210 {"ttywerase", f_ttywerase, OPT_0BOOL, 0},
211 /* O_VERBOSE 4.4BSD */
212 {"verbose", NULL, OPT_0BOOL, 0},
213 /* O_W1200 4BSD */
214 {"w1200", f_w1200, OPT_NUM, OPT_NDISP|OPT_NOSAVE},
215 /* O_W300 4BSD */
216 {"w300", f_w300, OPT_NUM, OPT_NDISP|OPT_NOSAVE},
217 /* O_W9600 4BSD */
218 {"w9600", f_w9600, OPT_NUM, OPT_NDISP|OPT_NOSAVE},
219 /* O_WARN 4BSD */
220 {"warn", NULL, OPT_1BOOL, 0},
221 /* O_WINDOW 4BSD */
222 {"window", f_window, OPT_NUM, 0},
223 /* O_WINDOWNAME 4BSD */
224 {"windowname", NULL, OPT_0BOOL, 0},
225 /* O_WRAPLEN 4.4BSD */
226 {"wraplen", NULL, OPT_NUM, 0},
227 /* O_WRAPMARGIN 4BSD */
228 {"wrapmargin", NULL, OPT_NUM, 0},
229 /* O_WRAPSCAN 4BSD */
230 {"wrapscan", NULL, OPT_1BOOL, 0},
231 /* O_WRITEANY 4BSD */
232 {"writeany", NULL, OPT_0BOOL, 0},
233 {NULL},
234 };
235
236 typedef struct abbrev {
237 char *name;
238 int offset;
239 } OABBREV;
240
241 static OABBREV const abbrev[] = {
242 {"ai", O_AUTOINDENT}, /* 4BSD */
243 {"ap", O_AUTOPRINT}, /* 4BSD */
244 {"aw", O_AUTOWRITE}, /* 4BSD */
245 {"bf", O_BEAUTIFY}, /* 4BSD */
246 {"co", O_COLUMNS}, /* 4.4BSD */
247 {"dir", O_DIRECTORY}, /* 4BSD */
248 {"eb", O_ERRORBELLS}, /* 4BSD */
249 {"ed", O_EDCOMPATIBLE}, /* 4BSD */
250 {"ex", O_EXRC}, /* System V (undocumented) */
251 #ifdef GTAGS
252 {"gt", O_GTAGSMODE}, /* FreeBSD2.2 */
253 #endif
254 {"ht", O_HARDTABS}, /* 4BSD */
255 {"ic", O_IGNORECASE}, /* 4BSD */
256 {"li", O_LINES}, /* 4.4BSD */
257 {"modelines", O_MODELINE}, /* HPUX */
258 {"nu", O_NUMBER}, /* 4BSD */
259 {"opt", O_OPTIMIZE}, /* 4BSD */
260 {"para", O_PARAGRAPHS}, /* 4BSD */
261 {"re", O_REDRAW}, /* O'Reilly */
262 {"ro", O_READONLY}, /* 4BSD (undocumented) */
263 {"scr", O_SCROLL}, /* 4BSD (undocumented) */
264 {"sect", O_SECTIONS}, /* O'Reilly */
265 {"sh", O_SHELL}, /* 4BSD */
266 {"slow", O_SLOWOPEN}, /* 4BSD */
267 {"sm", O_SHOWMATCH}, /* 4BSD */
268 {"smd", O_SHOWMODE}, /* 4BSD */
269 {"sw", O_SHIFTWIDTH}, /* 4BSD */
270 {"tag", O_TAGS}, /* 4BSD (undocumented) */
271 {"tl", O_TAGLENGTH}, /* 4BSD */
272 {"to", O_TIMEOUT}, /* 4BSD (undocumented) */
273 {"ts", O_TABSTOP}, /* 4BSD */
274 {"tty", O_TERM}, /* 4BSD (undocumented) */
275 {"ttytype", O_TERM}, /* 4BSD (undocumented) */
276 {"w", O_WINDOW}, /* O'Reilly */
277 {"wa", O_WRITEANY}, /* 4BSD */
278 {"wi", O_WINDOW}, /* 4BSD (undocumented) */
279 {"wl", O_WRAPLEN}, /* 4.4BSD */
280 {"wm", O_WRAPMARGIN}, /* 4BSD */
281 {"ws", O_WRAPSCAN}, /* 4BSD */
282 {NULL},
283 };
284
285 /*
286 * opts_init --
287 * Initialize some of the options.
288 *
289 * PUBLIC: int opts_init __P((SCR *, int *));
290 */
291 int
292 opts_init(sp, oargs)
293 SCR *sp;
294 int *oargs;
295 {
296 ARGS *argv[2], a, b;
297 OPTLIST const *op;
298 u_long v;
299 int cnt, optindx;
300 char *s, b1[1024];
301
302 a.bp = b1;
303 b.bp = NULL;
304 a.len = b.len = 0;
305 argv[0] = &a;
306 argv[1] = &b;
307
308 /* Set numeric and string default values. */
309 #define OI(indx, str) { \
310 if (str != b1) /* GCC puts strings in text-space. */ \
311 (void)strcpy(b1, str); \
312 a.len = strlen(b1); \
313 if (opts_set(sp, argv, NULL)) { \
314 optindx = indx; \
315 goto err; \
316 } \
317 }
318 /*
319 * Indirect global options to global space. Specifically, set up
320 * terminal, lines, columns first, they're used by other options.
321 * Note, don't set the flags until we've set up the indirection.
322 */
323 if (o_set(sp, O_TERM, 0, NULL, GO_TERM))
324 goto err;
325 F_SET(&sp->opts[O_TERM], OPT_GLOBAL);
326 if (o_set(sp, O_LINES, 0, NULL, GO_LINES))
327 goto err;
328 F_SET(&sp->opts[O_LINES], OPT_GLOBAL);
329 if (o_set(sp, O_COLUMNS, 0, NULL, GO_COLUMNS))
330 goto err;
331 F_SET(&sp->opts[O_COLUMNS], OPT_GLOBAL);
332 if (o_set(sp, O_SECURE, 0, NULL, GO_SECURE))
333 goto err;
334 F_SET(&sp->opts[O_SECURE], OPT_GLOBAL);
335
336 /* Initialize string values. */
337 (void)snprintf(b1, sizeof(b1),
338 "cdpath=%s", (s = getenv("CDPATH")) == NULL ? ":" : s);
339 OI(O_CDPATH, b1);
340
341 /*
342 * !!!
343 * Vi historically stored temporary files in /var/tmp. We store them
344 * in /tmp by default, hoping it's a memory based file system. There
345 * are two ways to change this -- the user can set either the directory
346 * option or the TMPDIR environmental variable.
347 */
348 (void)snprintf(b1, sizeof(b1),
349 "directory=%s", (s = getenv("TMPDIR")) == NULL ? _PATH_TMP : s);
350 OI(O_DIRECTORY, b1);
351 OI(O_ESCAPETIME, "escapetime=6");
352 OI(O_KEYTIME, "keytime=6");
353 OI(O_MATCHTIME, "matchtime=7");
354 (void)snprintf(b1, sizeof(b1), "msgcat=%s", _PATH_MSGCAT);
355 OI(O_MSGCAT, b1);
356 OI(O_REPORT, "report=5");
357 OI(O_PARAGRAPHS, "paragraphs=IPLPPPQPP LIpplpipbp");
358 (void)snprintf(b1, sizeof(b1), "path=%s", "");
359 OI(O_PATH, b1);
360 (void)snprintf(b1, sizeof(b1), "recdir=%s", _PATH_PRESERVE);
361 OI(O_RECDIR, b1);
362 OI(O_SECTIONS, "sections=NHSHH HUnhsh");
363 (void)snprintf(b1, sizeof(b1),
364 "shell=%s", (s = getenv("SHELL")) == NULL ? _PATH_BSHELL : s);
365 OI(O_SHELL, b1);
366 OI(O_SHELLMETA, "shellmeta=~{[*?$`'\"\\");
367 OI(O_SHIFTWIDTH, "shiftwidth=8");
368 OI(O_SIDESCROLL, "sidescroll=16");
369 OI(O_TABSTOP, "tabstop=8");
370 (void)snprintf(b1, sizeof(b1), "tags=%s", _PATH_TAGS);
371 OI(O_TAGS, b1);
372
373 /*
374 * XXX
375 * Initialize O_SCROLL here, after term; initializing term should
376 * have created a LINES/COLUMNS value.
377 */
378 if ((v = (O_VAL(sp, O_LINES) - 1) / 2) == 0)
379 v = 1;
380 (void)snprintf(b1, sizeof(b1), "scroll=%ld", v);
381 OI(O_SCROLL, b1);
382
383 /*
384 * The default window option values are:
385 * 8 if baud rate <= 600
386 * 16 if baud rate <= 1200
387 * LINES - 1 if baud rate > 1200
388 *
389 * Note, the windows option code will correct any too-large value
390 * or when the O_LINES value is 1.
391 */
392 if (sp->gp->scr_baud(sp, &v))
393 return (1);
394 if (v <= 600)
395 v = 8;
396 else if (v <= 1200)
397 v = 16;
398 else
399 v = O_VAL(sp, O_LINES) - 1;
400 (void)snprintf(b1, sizeof(b1), "window=%lu", v);
401 OI(O_WINDOW, b1);
402
403 /*
404 * Set boolean default values, and copy all settings into the default
405 * information. OS_NOFREE is set, we're copying, not replacing.
406 */
407 for (op = optlist, cnt = 0; op->name != NULL; ++op, ++cnt)
408 switch (op->type) {
409 case OPT_0BOOL:
410 break;
411 case OPT_1BOOL:
412 O_SET(sp, cnt);
413 O_D_SET(sp, cnt);
414 break;
415 case OPT_NUM:
416 o_set(sp, cnt, OS_DEF, NULL, O_VAL(sp, cnt));
417 break;
418 case OPT_STR:
419 if (O_STR(sp, cnt) != NULL && o_set(sp, cnt,
420 OS_DEF | OS_NOFREE | OS_STRDUP, O_STR(sp, cnt), 0))
421 goto err;
422 break;
423 default:
424 abort();
425 }
426
427 /*
428 * !!!
429 * Some options can be initialized by the command name or the
430 * command-line arguments. They don't set the default values,
431 * it's historic practice.
432 */
433 for (; *oargs != -1; ++oargs)
434 OI(*oargs, optlist[*oargs].name);
435 return (0);
436 #undef OI
437
438 err: msgq(sp, M_ERR,
439 "031|Unable to set default %s option", optlist[optindx].name);
440 return (1);
441 }
442
443 /*
444 * opts_set --
445 * Change the values of one or more options.
446 *
447 * PUBLIC: int opts_set __P((SCR *, ARGS *[], char *));
448 */
449 int
450 opts_set(sp, argv, usage)
451 SCR *sp;
452 ARGS *argv[];
453 char *usage;
454 {
455 enum optdisp disp;
456 enum nresult nret;
457 OPTLIST const *op;
458 OPTION *spo;
459 u_long value, turnoff;
460 int ch, equals, nf, nf2, offset, qmark, rval;
461 char *endp, *name, *p, *sep, *t;
462
463 disp = NO_DISPLAY;
464 for (rval = 0; argv[0]->len != 0; ++argv) {
465 /*
466 * The historic vi dumped the options for each occurrence of
467 * "all" in the set list. Puhleeze.
468 */
469 if (!strcmp(argv[0]->bp, "all")) {
470 disp = ALL_DISPLAY;
471 continue;
472 }
473
474 /* Find equals sign or question mark. */
475 for (sep = NULL, equals = qmark = 0,
476 p = name = argv[0]->bp; (ch = *p) != '\0'; ++p)
477 if (ch == '=' || ch == '?') {
478 if (p == name) {
479 if (usage != NULL)
480 msgq(sp, M_ERR,
481 "032|Usage: %s", usage);
482 return (1);
483 }
484 sep = p;
485 if (ch == '=')
486 equals = 1;
487 else
488 qmark = 1;
489 break;
490 }
491
492 turnoff = 0;
493 op = NULL;
494 if (sep != NULL)
495 *sep++ = '\0';
496
497 /* Search for the name, then name without any leading "no". */
498 if ((op = opts_search(name)) == NULL &&
499 name[0] == 'n' && name[1] == 'o') {
500 turnoff = 1;
501 name += 2;
502 op = opts_search(name);
503 }
504 if (op == NULL) {
505 opts_nomatch(sp, name);
506 rval = 1;
507 continue;
508 }
509
510 /* Find current option values. */
511 offset = op - optlist;
512 spo = sp->opts + offset;
513
514 /*
515 * !!!
516 * Historically, the question mark could be a separate
517 * argument.
518 */
519 if (!equals && !qmark &&
520 argv[1]->len == 1 && argv[1]->bp[0] == '?') {
521 ++argv;
522 qmark = 1;
523 }
524
525 /* Set name, value. */
526 switch (op->type) {
527 case OPT_0BOOL:
528 case OPT_1BOOL:
529 /* Some options may not be reset. */
530 if (F_ISSET(op, OPT_NOUNSET) && turnoff) {
531 msgq_str(sp, M_ERR, name,
532 "291|set: the %s option may not be turned off");
533 rval = 1;
534 break;
535 }
536
537 /* Some options may not be set. */
538 if (F_ISSET(op, OPT_NOSET) && !turnoff) {
539 msgq_str(sp, M_ERR, name,
540 "313|set: the %s option may never be turned on");
541 rval = 1;
542 break;
543 }
544
545 if (equals) {
546 msgq_str(sp, M_ERR, name,
547 "034|set: [no]%s option doesn't take a value");
548 rval = 1;
549 break;
550 }
551 if (qmark) {
552 if (!disp)
553 disp = SELECT_DISPLAY;
554 F_SET(spo, OPT_SELECTED);
555 break;
556 }
557
558 /*
559 * Do nothing if the value is unchanged, the underlying
560 * functions can be expensive.
561 */
562 if (!F_ISSET(op, OPT_ALWAYS))
563 if (turnoff) {
564 if (!O_ISSET(sp, offset))
565 break;
566 } else {
567 if (O_ISSET(sp, offset))
568 break;
569 }
570
571 /* Report to subsystems. */
572 if (op->func != NULL &&
573 op->func(sp, spo, NULL, &turnoff) ||
574 ex_optchange(sp, offset, NULL, &turnoff) ||
575 v_optchange(sp, offset, NULL, &turnoff) ||
576 sp->gp->scr_optchange(sp, offset, NULL, &turnoff)) {
577 rval = 1;
578 break;
579 }
580
581 /* Set the value. */
582 if (turnoff)
583 O_CLR(sp, offset);
584 else
585 O_SET(sp, offset);
586 break;
587 case OPT_NUM:
588 if (turnoff) {
589 msgq_str(sp, M_ERR, name,
590 "035|set: %s option isn't a boolean");
591 rval = 1;
592 break;
593 }
594 if (qmark || !equals) {
595 if (!disp)
596 disp = SELECT_DISPLAY;
597 F_SET(spo, OPT_SELECTED);
598 break;
599 }
600
601 if (!isdigit(sep[0]))
602 goto badnum;
603 if ((nret =
604 nget_uslong(&value, sep, &endp, 10)) != NUM_OK) {
605 p = msg_print(sp, name, &nf);
606 t = msg_print(sp, sep, &nf2);
607 switch (nret) {
608 case NUM_ERR:
609 msgq(sp, M_SYSERR,
610 "036|set: %s option: %s", p, t);
611 break;
612 case NUM_OVER:
613 msgq(sp, M_ERR,
614 "037|set: %s option: %s: value overflow", p, t);
615 break;
616 case NUM_OK:
617 case NUM_UNDER:
618 abort();
619 }
620 if (nf)
621 FREE_SPACE(sp, p, 0);
622 if (nf2)
623 FREE_SPACE(sp, t, 0);
624 rval = 1;
625 break;
626 }
627 if (*endp && !isblank(*endp)) {
628 badnum: p = msg_print(sp, name, &nf);
629 t = msg_print(sp, sep, &nf2);
630 msgq(sp, M_ERR,
631 "038|set: %s option: %s is an illegal number", p, t);
632 if (nf)
633 FREE_SPACE(sp, p, 0);
634 if (nf2)
635 FREE_SPACE(sp, t, 0);
636 rval = 1;
637 break;
638 }
639
640 /* Some options may never be set to zero. */
641 if (F_ISSET(op, OPT_NOZERO) && value == 0) {
642 msgq_str(sp, M_ERR, name,
643 "314|set: the %s option may never be set to 0");
644 rval = 1;
645 break;
646 }
647
648 /*
649 * Do nothing if the value is unchanged, the underlying
650 * functions can be expensive.
651 */
652 if (!F_ISSET(op, OPT_ALWAYS) &&
653 O_VAL(sp, offset) == value)
654 break;
655
656 /* Report to subsystems. */
657 if (op->func != NULL &&
658 op->func(sp, spo, sep, &value) ||
659 ex_optchange(sp, offset, sep, &value) ||
660 v_optchange(sp, offset, sep, &value) ||
661 sp->gp->scr_optchange(sp, offset, sep, &value)) {
662 rval = 1;
663 break;
664 }
665
666 /* Set the value. */
667 if (o_set(sp, offset, 0, NULL, value))
668 rval = 1;
669 break;
670 case OPT_STR:
671 if (turnoff) {
672 msgq_str(sp, M_ERR, name,
673 "039|set: %s option isn't a boolean");
674 rval = 1;
675 break;
676 }
677 if (qmark || !equals) {
678 if (!disp)
679 disp = SELECT_DISPLAY;
680 F_SET(spo, OPT_SELECTED);
681 break;
682 }
683
684 /*
685 * Do nothing if the value is unchanged, the underlying
686 * functions can be expensive.
687 */
688 if (!F_ISSET(op, OPT_ALWAYS) &&
689 O_STR(sp, offset) != NULL &&
690 !strcmp(O_STR(sp, offset), sep))
691 break;
692
693 /* Report to subsystems. */
694 if (op->func != NULL &&
695 op->func(sp, spo, sep, NULL) ||
696 ex_optchange(sp, offset, sep, NULL) ||
697 v_optchange(sp, offset, sep, NULL) ||
698 sp->gp->scr_optchange(sp, offset, sep, NULL)) {
699 rval = 1;
700 break;
701 }
702
703 /* Set the value. */
704 if (o_set(sp, offset, OS_STRDUP, sep, 0))
705 rval = 1;
706 break;
707 default:
708 abort();
709 }
710 }
711 if (disp != NO_DISPLAY)
712 opts_dump(sp, disp);
713 return (rval);
714 }
715
716 /*
717 * o_set --
718 * Set an option's value.
719 *
720 * PUBLIC: int o_set __P((SCR *, int, u_int, char *, u_long));
721 */
722 int
723 o_set(sp, opt, flags, str, val)
724 SCR *sp;
725 int opt;
726 u_int flags;
727 char *str;
728 u_long val;
729 {
730 OPTION *op;
731
732 /* Set a pointer to the options area. */
733 op = F_ISSET(&sp->opts[opt], OPT_GLOBAL) ?
734 &sp->gp->opts[sp->opts[opt].o_cur.val] : &sp->opts[opt];
735
736 /* Copy the string, if requested. */
737 if (LF_ISSET(OS_STRDUP) && (str = strdup(str)) == NULL) {
738 msgq(sp, M_SYSERR, NULL);
739 return (1);
740 }
741
742 /* Free the previous string, if requested, and set the value. */
743 if LF_ISSET(OS_DEF)
744 if (LF_ISSET(OS_STR | OS_STRDUP)) {
745 if (!LF_ISSET(OS_NOFREE) && op->o_def.str != NULL)
746 free(op->o_def.str);
747 op->o_def.str = str;
748 } else
749 op->o_def.val = val;
750 else
751 if (LF_ISSET(OS_STR | OS_STRDUP)) {
752 if (!LF_ISSET(OS_NOFREE) && op->o_cur.str != NULL)
753 free(op->o_cur.str);
754 op->o_cur.str = str;
755 } else
756 op->o_cur.val = val;
757 return (0);
758 }
759
760 /*
761 * opts_empty --
762 * Return 1 if the string option is invalid, 0 if it's OK.
763 *
764 * PUBLIC: int opts_empty __P((SCR *, int, int));
765 */
766 int
767 opts_empty(sp, off, silent)
768 SCR *sp;
769 int off, silent;
770 {
771 char *p;
772
773 if ((p = O_STR(sp, off)) == NULL || p[0] == '\0') {
774 if (!silent)
775 msgq_str(sp, M_ERR, optlist[off].name,
776 "305|No %s edit option specified");
777 return (1);
778 }
779 return (0);
780 }
781
782 /*
783 * opts_dump --
784 * List the current values of selected options.
785 *
786 * PUBLIC: void opts_dump __P((SCR *, enum optdisp));
787 */
788 void
789 opts_dump(sp, type)
790 SCR *sp;
791 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(sp, op)
924 SCR *sp;
925 OPTLIST const *op;
926 {
927 int curlen, offset;
928
929 curlen = 0;
930 offset = op - optlist;
931 switch (op->type) {
932 case OPT_0BOOL:
933 case OPT_1BOOL:
934 curlen += ex_printf(sp,
935 "%s%s", O_ISSET(sp, offset) ? "" : "no", op->name);
936 break;
937 case OPT_NUM:
938 curlen += ex_printf(sp, "%s=%ld", op->name, O_VAL(sp, offset));
939 break;
940 case OPT_STR:
941 curlen += ex_printf(sp, "%s=\"%s\"", op->name,
942 O_STR(sp, offset) == NULL ? "" : O_STR(sp, offset));
943 break;
944 }
945 return (curlen);
946 }
947
948 /*
949 * opts_save --
950 * Write the current configuration to a file.
951 *
952 * PUBLIC: int opts_save __P((SCR *, FILE *));
953 */
954 int
955 opts_save(sp, fp)
956 SCR *sp;
957 FILE *fp;
958 {
959 OPTLIST const *op;
960 int ch, cnt;
961 char *p;
962
963 for (op = optlist; op->name != NULL; ++op) {
964 if (F_ISSET(op, OPT_NOSAVE))
965 continue;
966 cnt = op - optlist;
967 switch (op->type) {
968 case OPT_0BOOL:
969 case OPT_1BOOL:
970 if (O_ISSET(sp, cnt))
971 (void)fprintf(fp, "set %s\n", op->name);
972 else
973 (void)fprintf(fp, "set no%s\n", op->name);
974 break;
975 case OPT_NUM:
976 (void)fprintf(fp,
977 "set %s=%-3ld\n", op->name, O_VAL(sp, cnt));
978 break;
979 case OPT_STR:
980 if (O_STR(sp, cnt) == NULL)
981 break;
982 (void)fprintf(fp, "set ");
983 for (p = op->name; (ch = *p) != '\0'; ++p) {
984 if (isblank(ch) || ch == '\\')
985 (void)putc('\\', fp);
986 (void)putc(ch, fp);
987 }
988 (void)putc('=', fp);
989 for (p = O_STR(sp, cnt); (ch = *p) != '\0'; ++p) {
990 if (isblank(ch) || ch == '\\')
991 (void)putc('\\', fp);
992 (void)putc(ch, fp);
993 }
994 (void)putc('\n', fp);
995 break;
996 }
997 if (ferror(fp)) {
998 msgq(sp, M_SYSERR, NULL);
999 return (1);
1000 }
1001 }
1002 return (0);
1003 }
1004
1005 /*
1006 * opts_search --
1007 * Search for an option.
1008 *
1009 * PUBLIC: OPTLIST const *opts_search __P((char *));
1010 */
1011 OPTLIST const *
1012 opts_search(name)
1013 char *name;
1014 {
1015 OPTLIST const *op, *found;
1016 OABBREV atmp, *ap;
1017 OPTLIST otmp;
1018 size_t len;
1019
1020 /* Check list of abbreviations. */
1021 atmp.name = name;
1022 if ((ap = bsearch(&atmp, abbrev, sizeof(abbrev) / sizeof(OABBREV) - 1,
1023 sizeof(OABBREV), opts_abbcmp)) != NULL)
1024 return (optlist + ap->offset);
1025
1026 /* Check list of options. */
1027 otmp.name = name;
1028 if ((op = bsearch(&otmp, optlist, sizeof(optlist) / sizeof(OPTLIST) - 1,
1029 sizeof(OPTLIST), opts_cmp)) != NULL)
1030 return (op);
1031
1032 /*
1033 * Check to see if the name is the prefix of one (and only one)
1034 * option. If so, return the option.
1035 */
1036 len = strlen(name);
1037 for (found = NULL, op = optlist; op->name != NULL; ++op) {
1038 if (op->name[0] < name[0])
1039 continue;
1040 if (op->name[0] > name[0])
1041 break;
1042 if (!memcmp(op->name, name, len)) {
1043 if (found != NULL)
1044 return (NULL);
1045 found = op;
1046 }
1047 }
1048 return (found);
1049 }
1050
1051 /*
1052 * opts_nomatch --
1053 * Standard nomatch error message for options.
1054 *
1055 * PUBLIC: void opts_nomatch __P((SCR *, char *));
1056 */
1057 void
1058 opts_nomatch(sp, name)
1059 SCR *sp;
1060 char *name;
1061 {
1062 msgq_str(sp, M_ERR, name,
1063 "033|set: no %s option: 'set all' gives all option values");
1064 }
1065
1066 static int
1067 opts_abbcmp(a, b)
1068 const void *a, *b;
1069 {
1070 return(strcmp(((OABBREV *)a)->name, ((OABBREV *)b)->name));
1071 }
1072
1073 static int
1074 opts_cmp(a, b)
1075 const void *a, *b;
1076 {
1077 return(strcmp(((OPTLIST *)a)->name, ((OPTLIST *)b)->name));
1078 }
1079
1080 /*
1081 * opts_copy --
1082 * Copy a screen's OPTION array.
1083 *
1084 * PUBLIC: int opts_copy __P((SCR *, SCR *));
1085 */
1086 int
1087 opts_copy(orig, sp)
1088 SCR *orig, *sp;
1089 {
1090 int cnt, rval;
1091
1092 /* Copy most everything without change. */
1093 memcpy(sp->opts, orig->opts, sizeof(orig->opts));
1094
1095 /* Copy the string edit options. */
1096 for (cnt = rval = 0; cnt < O_OPTIONCOUNT; ++cnt) {
1097 if (optlist[cnt].type != OPT_STR ||
1098 F_ISSET(&optlist[cnt], OPT_GLOBAL))
1099 continue;
1100 /*
1101 * If never set, or already failed, NULL out the entries --
1102 * have to continue after failure, otherwise would have two
1103 * screens referencing the same memory.
1104 */
1105 if (rval || O_STR(sp, cnt) == NULL) {
1106 o_set(sp, cnt, OS_NOFREE | OS_STR, NULL, 0);
1107 o_set(sp, cnt, OS_DEF | OS_NOFREE | OS_STR, NULL, 0);
1108 continue;
1109 }
1110
1111 /* Copy the current string. */
1112 if (o_set(sp, cnt, OS_NOFREE | OS_STRDUP, O_STR(sp, cnt), 0)) {
1113 o_set(sp, cnt, OS_DEF | OS_NOFREE | OS_STR, NULL, 0);
1114 goto nomem;
1115 }
1116
1117 /* Copy the default string. */
1118 if (O_D_STR(sp, cnt) != NULL && o_set(sp, cnt,
1119 OS_DEF | OS_NOFREE | OS_STRDUP, O_D_STR(sp, cnt), 0)) {
1120 nomem: msgq(orig, M_SYSERR, NULL);
1121 rval = 1;
1122 }
1123 }
1124 return (rval);
1125 }
1126
1127 /*
1128 * opts_free --
1129 * Free all option strings
1130 *
1131 * PUBLIC: void opts_free __P((SCR *));
1132 */
1133 void
1134 opts_free(sp)
1135 SCR *sp;
1136 {
1137 int cnt;
1138
1139 for (cnt = 0; cnt < O_OPTIONCOUNT; ++cnt) {
1140 if (optlist[cnt].type != OPT_STR ||
1141 F_ISSET(&optlist[cnt], OPT_GLOBAL))
1142 continue;
1143 if (O_STR(sp, cnt) != NULL)
1144 free(O_STR(sp, cnt));
1145 if (O_D_STR(sp, cnt) != NULL)
1146 free(O_D_STR(sp, cnt));
1147 }
1148 }
DragonFly BSD