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don't collide with the global trace code
[nvi.git] / common / options.c
blob05c5af94984d07a6803f9309b6bdb6014453d27f
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[] = "$Id: options.c,v 10.51 1996/10/14 14:56:28 bostic Exp $ (Berkeley) $Date: 1996/10/14 14:56:28 $";
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 /* O_HARDTABS 4BSD */
84 {"hardtabs", NULL, OPT_NUM, 0},
85 /* O_ICLOWER 4.4BSD */
86 {"iclower", f_recompile, OPT_0BOOL, 0},
87 /* O_IGNORECASE 4BSD */
88 {"ignorecase", f_recompile, OPT_0BOOL, 0},
89 /* O_KEYTIME 4.4BSD */
90 {"keytime", NULL, OPT_NUM, 0},
91 /* O_LEFTRIGHT 4.4BSD */
92 {"leftright", f_reformat, OPT_0BOOL, 0},
93 /* O_LINES 4.4BSD */
94 {"lines", f_lines, OPT_NUM, OPT_NOSAVE},
95 /* O_LISP 4BSD
96 * XXX
97 * When the lisp option is implemented, delete the OPT_NOSAVE flag,
98 * so that :mkexrc dumps it.
99 */
100 {"lisp", f_lisp, OPT_0BOOL, OPT_NOSAVE},
101 /* O_LIST 4BSD */
102 {"list", f_reformat, OPT_0BOOL, 0},
103 /* O_LOCKFILES 4.4BSD
104 * XXX
105 * Locking isn't reliable enough over NFS to require it, in addition,
106 * it's a serious startup performance problem over some remote links.
107 */
108 {"lock", NULL, OPT_1BOOL, 0},
109 /* O_MAGIC 4BSD */
110 {"magic", NULL, OPT_1BOOL, 0},
111 /* O_MATCHTIME 4.4BSD */
112 {"matchtime", NULL, OPT_NUM, 0},
113 /* O_MESG 4BSD */
114 {"mesg", NULL, OPT_1BOOL, 0},
115 /* O_MODELINE 4BSD
116 * !!!
117 * This has been documented in historical systems as both "modeline"
118 * and as "modelines". Regardless of the name, this option represents
119 * a security problem of mammoth proportions, not to mention a stunning
120 * example of what your intro CS professor referred to as the perils of
121 * mixing code and data. Don't add it, or I will kill you.
122 */
123 {"modeline", NULL, OPT_0BOOL, OPT_NOSET},
124 /* O_MSGCAT 4.4BSD */
125 {"msgcat", f_msgcat, OPT_STR, 0},
126 /* O_NOPRINT 4.4BSD */
127 {"noprint", f_print, OPT_STR, 0},
128 /* O_NUMBER 4BSD */
129 {"number", f_reformat, OPT_0BOOL, 0},
130 /* O_OCTAL 4.4BSD */
131 {"octal", f_print, OPT_0BOOL, 0},
132 /* O_OPEN 4BSD */
133 {"open", NULL, OPT_1BOOL, 0},
134 /* O_OPTIMIZE 4BSD */
135 {"optimize", NULL, OPT_1BOOL, 0},
136 /* O_PARAGRAPHS 4BSD */
137 {"paragraphs", f_paragraph, OPT_STR, 0},
138 /* O_PATH 4.4BSD */
139 {"path", NULL, OPT_STR, 0},
140 /* O_PRINT 4.4BSD */
141 {"print", f_print, OPT_STR, 0},
142 /* O_PROMPT 4BSD */
143 {"prompt", NULL, OPT_1BOOL, 0},
144 /* O_READONLY 4BSD (undocumented) */
145 {"readonly", f_readonly, OPT_0BOOL, OPT_ALWAYS},
146 /* O_RECDIR 4.4BSD */
147 {"recdir", NULL, OPT_STR, 0},
148 /* O_REDRAW 4BSD */
149 {"redraw", NULL, OPT_0BOOL, 0},
150 /* O_REMAP 4BSD */
151 {"remap", NULL, OPT_1BOOL, 0},
152 /* O_REPORT 4BSD */
153 {"report", NULL, OPT_NUM, 0},
154 /* O_RULER 4.4BSD */
155 {"ruler", NULL, OPT_0BOOL, 0},
156 /* O_SCROLL 4BSD */
157 {"scroll", NULL, OPT_NUM, 0},
158 /* O_SEARCHINCR 4.4BSD */
159 {"searchincr", NULL, OPT_0BOOL, 0},
160 /* O_SECTIONS 4BSD */
161 {"sections", f_section, OPT_STR, 0},
162 /* O_SECURE 4.4BSD */
163 {"secure", NULL, OPT_0BOOL, OPT_NOUNSET},
164 /* O_SHELL 4BSD */
165 {"shell", NULL, OPT_STR, 0},
166 /* O_SHELLMETA 4.4BSD */
167 {"shellmeta", NULL, OPT_STR, 0},
168 /* O_SHIFTWIDTH 4BSD */
169 {"shiftwidth", NULL, OPT_NUM, OPT_NOZERO},
170 /* O_SHOWMATCH 4BSD */
171 {"showmatch", NULL, OPT_0BOOL, 0},
172 /* O_SHOWMODE 4.4BSD */
173 {"showmode", NULL, OPT_0BOOL, 0},
174 /* O_SIDESCROLL 4.4BSD */
175 {"sidescroll", NULL, OPT_NUM, OPT_NOZERO},
176 /* O_SLOWOPEN 4BSD */
177 {"slowopen", NULL, OPT_0BOOL, 0},
178 /* O_SOURCEANY 4BSD (undocumented)
179 * !!!
180 * Historic vi, on startup, source'd $HOME/.exrc and ./.exrc, if they
181 * were owned by the user. The sourceany option was an undocumented
182 * feature of historic vi which permitted the startup source'ing of
183 * .exrc files the user didn't own. This is an obvious security problem,
184 * and we ignore the option.
185 */
186 {"sourceany", NULL, OPT_0BOOL, OPT_NOSET},
187 /* O_TABSTOP 4BSD */
188 {"tabstop", f_reformat, OPT_NUM, OPT_NOZERO},
189 /* O_TAGLENGTH 4BSD */
190 {"taglength", NULL, OPT_NUM, 0},
191 /* O_TAGS 4BSD */
192 {"tags", NULL, OPT_STR, 0},
193 /* O_TERM 4BSD
194 * !!!
195 * By default, the historic vi always displayed information about two
196 * options, redraw and term. Term seems sufficient.
197 */
198 {"term", NULL, OPT_STR, OPT_ADISP|OPT_NOSAVE},
199 /* O_TERSE 4BSD */
200 {"terse", NULL, OPT_0BOOL, 0},
201 /* O_TILDEOP 4.4BSD */
202 {"tildeop", NULL, OPT_0BOOL, 0},
203 /* O_TIMEOUT 4BSD (undocumented) */
204 {"timeout", NULL, OPT_1BOOL, 0},
205 /* O_TTYWERASE 4.4BSD */
206 {"ttywerase", f_ttywerase, OPT_0BOOL, 0},
207 /* O_VERBOSE 4.4BSD */
208 {"verbose", NULL, OPT_0BOOL, 0},
209 /* O_W1200 4BSD */
210 {"w1200", f_w1200, OPT_NUM, OPT_NDISP|OPT_NOSAVE},
211 /* O_W300 4BSD */
212 {"w300", f_w300, OPT_NUM, OPT_NDISP|OPT_NOSAVE},
213 /* O_W9600 4BSD */
214 {"w9600", f_w9600, OPT_NUM, OPT_NDISP|OPT_NOSAVE},
215 /* O_WARN 4BSD */
216 {"warn", NULL, OPT_1BOOL, 0},
217 /* O_WINDOW 4BSD */
218 {"window", f_window, OPT_NUM, 0},
219 /* O_WINDOWNAME 4BSD */
220 {"windowname", NULL, OPT_0BOOL, 0},
221 /* O_WRAPLEN 4.4BSD */
222 {"wraplen", NULL, OPT_NUM, 0},
223 /* O_WRAPMARGIN 4BSD */
224 {"wrapmargin", NULL, OPT_NUM, 0},
225 /* O_WRAPSCAN 4BSD */
226 {"wrapscan", NULL, OPT_1BOOL, 0},
227 /* O_WRITEANY 4BSD */
228 {"writeany", NULL, OPT_0BOOL, 0},
229 {NULL},
230 };
231
232 typedef struct abbrev {
233 char *name;
234 int offset;
235 } OABBREV;
236
237 static OABBREV const abbrev[] = {
238 {"ai", O_AUTOINDENT}, /* 4BSD */
239 {"ap", O_AUTOPRINT}, /* 4BSD */
240 {"aw", O_AUTOWRITE}, /* 4BSD */
241 {"bf", O_BEAUTIFY}, /* 4BSD */
242 {"co", O_COLUMNS}, /* 4.4BSD */
243 {"dir", O_DIRECTORY}, /* 4BSD */
244 {"eb", O_ERRORBELLS}, /* 4BSD */
245 {"ed", O_EDCOMPATIBLE}, /* 4BSD */
246 {"ex", O_EXRC}, /* System V (undocumented) */
247 {"ht", O_HARDTABS}, /* 4BSD */
248 {"ic", O_IGNORECASE}, /* 4BSD */
249 {"li", O_LINES}, /* 4.4BSD */
250 {"modelines", O_MODELINE}, /* HPUX */
251 {"nu", O_NUMBER}, /* 4BSD */
252 {"opt", O_OPTIMIZE}, /* 4BSD */
253 {"para", O_PARAGRAPHS}, /* 4BSD */
254 {"re", O_REDRAW}, /* O'Reilly */
255 {"ro", O_READONLY}, /* 4BSD (undocumented) */
256 {"scr", O_SCROLL}, /* 4BSD (undocumented) */
257 {"sect", O_SECTIONS}, /* O'Reilly */
258 {"sh", O_SHELL}, /* 4BSD */
259 {"slow", O_SLOWOPEN}, /* 4BSD */
260 {"sm", O_SHOWMATCH}, /* 4BSD */
261 {"smd", O_SHOWMODE}, /* 4BSD */
262 {"sw", O_SHIFTWIDTH}, /* 4BSD */
263 {"tag", O_TAGS}, /* 4BSD (undocumented) */
264 {"tl", O_TAGLENGTH}, /* 4BSD */
265 {"to", O_TIMEOUT}, /* 4BSD (undocumented) */
266 {"ts", O_TABSTOP}, /* 4BSD */
267 {"tty", O_TERM}, /* 4BSD (undocumented) */
268 {"ttytype", O_TERM}, /* 4BSD (undocumented) */
269 {"w", O_WINDOW}, /* O'Reilly */
270 {"wa", O_WRITEANY}, /* 4BSD */
271 {"wi", O_WINDOW}, /* 4BSD (undocumented) */
272 {"wl", O_WRAPLEN}, /* 4.4BSD */
273 {"wm", O_WRAPMARGIN}, /* 4BSD */
274 {"ws", O_WRAPSCAN}, /* 4BSD */
275 {NULL},
276 };
277
278 /*
279 * opts_init --
280 * Initialize some of the options.
281 *
282 * PUBLIC: int opts_init __P((SCR *, int *));
283 */
284 int
285 opts_init(sp, oargs)
286 SCR *sp;
287 int *oargs;
288 {
289 ARGS *argv[2], a, b;
290 OPTLIST const *op;
291 u_long v;
292 int cnt, optindx;
293 char *s, b1[1024];
294
295 a.bp = b1;
296 b.bp = NULL;
297 a.len = b.len = 0;
298 argv[0] = &a;
299 argv[1] = &b;
300
301 /* Set numeric and string default values. */
302 #define OI(indx, str) { \
303 if (str != b1) /* GCC puts strings in text-space. */ \
304 (void)strcpy(b1, str); \
305 a.len = strlen(b1); \
306 if (opts_set(sp, argv, NULL)) { \
307 optindx = indx; \
308 goto err; \
309 } \
310 }
311 /*
312 * Indirect global options to global space. Specifically, set up
313 * terminal, lines, columns first, they're used by other options.
314 * Note, don't set the flags until we've set up the indirection.
315 */
316 if (o_set(sp, O_TERM, 0, NULL, GO_TERM))
317 goto err;
318 F_SET(&sp->opts[O_TERM], OPT_GLOBAL);
319 if (o_set(sp, O_LINES, 0, NULL, GO_LINES))
320 goto err;
321 F_SET(&sp->opts[O_LINES], OPT_GLOBAL);
322 if (o_set(sp, O_COLUMNS, 0, NULL, GO_COLUMNS))
323 goto err;
324 F_SET(&sp->opts[O_COLUMNS], OPT_GLOBAL);
325 if (o_set(sp, O_SECURE, 0, NULL, GO_SECURE))
326 goto err;
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
334 /*
335 * !!!
336 * Vi historically stored temporary files in /var/tmp. We store them
337 * in /tmp by default, hoping it's a memory based file system. There
338 * are two ways to change this -- the user can set either the directory
339 * option or the TMPDIR environmental variable.
340 */
341 (void)snprintf(b1, sizeof(b1),
342 "directory=%s", (s = getenv("TMPDIR")) == NULL ? _PATH_TMP : s);
343 OI(O_DIRECTORY, b1);
344 OI(O_ESCAPETIME, "escapetime=1");
345 OI(O_KEYTIME, "keytime=6");
346 OI(O_MATCHTIME, "matchtime=7");
347 (void)snprintf(b1, sizeof(b1), "msgcat=%s", _PATH_MSGCAT);
348 OI(O_MSGCAT, b1);
349 OI(O_REPORT, "report=5");
350 OI(O_PARAGRAPHS, "paragraphs=IPLPPPQPP LIpplpipbp");
351 (void)snprintf(b1, sizeof(b1), "path=%s", "");
352 OI(O_PATH, b1);
353 (void)snprintf(b1, sizeof(b1), "recdir=%s", _PATH_PRESERVE);
354 OI(O_RECDIR, b1);
355 OI(O_SECTIONS, "sections=NHSHH HUnhsh");
356 (void)snprintf(b1, sizeof(b1),
357 "shell=%s", (s = getenv("SHELL")) == NULL ? _PATH_BSHELL : s);
358 OI(O_SHELL, b1);
359 OI(O_SHELLMETA, "shellmeta=~{[*?$`'\"\\");
360 OI(O_SHIFTWIDTH, "shiftwidth=8");
361 OI(O_SIDESCROLL, "sidescroll=16");
362 OI(O_TABSTOP, "tabstop=8");
363 (void)snprintf(b1, sizeof(b1), "tags=%s", _PATH_TAGS);
364 OI(O_TAGS, b1);
365
366 /*
367 * XXX
368 * Initialize O_SCROLL here, after term; initializing term should
369 * have created a LINES/COLUMNS value.
370 */
371 if ((v = (O_VAL(sp, O_LINES) - 1) / 2) == 0)
372 v = 1;
373 (void)snprintf(b1, sizeof(b1), "scroll=%ld", v);
374 OI(O_SCROLL, b1);
375
376 /*
377 * The default window option values are:
378 * 8 if baud rate <= 600
379 * 16 if baud rate <= 1200
380 * LINES - 1 if baud rate > 1200
381 *
382 * Note, the windows option code will correct any too-large value
383 * or when the O_LINES value is 1.
384 */
385 if (sp->gp->scr_baud(sp, &v))
386 return (1);
387 if (v <= 600)
388 v = 8;
389 else if (v <= 1200)
390 v = 16;
391 else
392 v = O_VAL(sp, O_LINES) - 1;
393 (void)snprintf(b1, sizeof(b1), "window=%lu", v);
394 OI(O_WINDOW, b1);
395
396 /*
397 * Set boolean default values, and copy all settings into the default
398 * information. OS_NOFREE is set, we're copying, not replacing.
399 */
400 for (op = optlist, cnt = 0; op->name != NULL; ++op, ++cnt)
401 switch (op->type) {
402 case OPT_0BOOL:
403 break;
404 case OPT_1BOOL:
405 O_SET(sp, cnt);
406 O_D_SET(sp, cnt);
407 break;
408 case OPT_NUM:
409 o_set(sp, cnt, OS_DEF, NULL, O_VAL(sp, cnt));
410 break;
411 case OPT_STR:
412 if (O_STR(sp, cnt) != NULL && o_set(sp, cnt,
413 OS_DEF | OS_NOFREE | OS_STRDUP, O_STR(sp, cnt), 0))
414 goto err;
415 break;
416 default:
417 abort();
418 }
419
420 /*
421 * !!!
422 * Some options can be initialized by the command name or the
423 * command-line arguments. They don't set the default values,
424 * it's historic practice.
425 */
426 for (; *oargs != -1; ++oargs)
427 OI(*oargs, optlist[*oargs].name);
428 return (0);
429 #undef OI
430
431 err: msgq(sp, M_ERR,
432 "031|Unable to set default %s option", optlist[optindx].name);
433 return (1);
434 }
435
436 /*
437 * opts_set --
438 * Change the values of one or more options.
439 *
440 * PUBLIC: int opts_set __P((SCR *, ARGS *[], char *));
441 */
442 int
443 opts_set(sp, argv, usage)
444 SCR *sp;
445 ARGS *argv[];
446 char *usage;
447 {
448 enum optdisp disp;
449 enum nresult nret;
450 OPTLIST const *op;
451 OPTION *spo;
452 u_long value, turnoff;
453 int ch, equals, nf, nf2, offset, qmark, rval;
454 char *endp, *name, *p, *sep, *t;
455
456 disp = NO_DISPLAY;
457 for (rval = 0; argv[0]->len != 0; ++argv) {
458 /*
459 * The historic vi dumped the options for each occurrence of
460 * "all" in the set list. Puhleeze.
461 */
462 if (!strcmp(argv[0]->bp, "all")) {
463 disp = ALL_DISPLAY;
464 continue;
465 }
466
467 /* Find equals sign or question mark. */
468 for (sep = NULL, equals = qmark = 0,
469 p = name = argv[0]->bp; (ch = *p) != '\0'; ++p)
470 if (ch == '=' || ch == '?') {
471 if (p == name) {
472 if (usage != NULL)
473 msgq(sp, M_ERR,
474 "032|Usage: %s", usage);
475 return (1);
476 }
477 sep = p;
478 if (ch == '=')
479 equals = 1;
480 else
481 qmark = 1;
482 break;
483 }
484
485 turnoff = 0;
486 op = NULL;
487 if (sep != NULL)
488 *sep++ = '\0';
489
490 /* Search for the name, then name without any leading "no". */
491 if ((op = opts_search(name)) == NULL &&
492 name[0] == 'n' && name[1] == 'o') {
493 turnoff = 1;
494 name += 2;
495 op = opts_search(name);
496 }
497 if (op == NULL) {
498 opts_nomatch(sp, name);
499 rval = 1;
500 continue;
501 }
502
503 /* Find current option values. */
504 offset = op - optlist;
505 spo = sp->opts + offset;
506
507 /*
508 * !!!
509 * Historically, the question mark could be a separate
510 * argument.
511 */
512 if (!equals && !qmark &&
513 argv[1]->len == 1 && argv[1]->bp[0] == '?') {
514 ++argv;
515 qmark = 1;
516 }
517
518 /* Set name, value. */
519 switch (op->type) {
520 case OPT_0BOOL:
521 case OPT_1BOOL:
522 /* Some options may not be reset. */
523 if (F_ISSET(op, OPT_NOUNSET) && turnoff) {
524 msgq_str(sp, M_ERR, name,
525 "291|set: the %s option may not be turned off");
526 rval = 1;
527 break;
528 }
529
530 /* Some options may not be set. */
531 if (F_ISSET(op, OPT_NOSET) && !turnoff) {
532 msgq_str(sp, M_ERR, name,
533 "313|set: the %s option may never be turned on");
534 rval = 1;
535 break;
536 }
537
538 if (equals) {
539 msgq_str(sp, M_ERR, name,
540 "034|set: [no]%s option doesn't take a value");
541 rval = 1;
542 break;
543 }
544 if (qmark) {
545 if (!disp)
546 disp = SELECT_DISPLAY;
547 F_SET(spo, OPT_SELECTED);
548 break;
549 }
550
551 /*
552 * Do nothing if the value is unchanged, the underlying
553 * functions can be expensive.
554 */
555 if (!F_ISSET(op, OPT_ALWAYS))
556 if (turnoff) {
557 if (!O_ISSET(sp, offset))
558 break;
559 } else {
560 if (O_ISSET(sp, offset))
561 break;
562 }
563
564 /* Report to subsystems. */
565 if (op->func != NULL &&
566 op->func(sp, spo, NULL, &turnoff) ||
567 ex_optchange(sp, offset, NULL, &turnoff) ||
568 v_optchange(sp, offset, NULL, &turnoff) ||
569 sp->gp->scr_optchange(sp, offset, NULL, &turnoff)) {
570 rval = 1;
571 break;
572 }
573
574 /* Set the value. */
575 if (turnoff)
576 O_CLR(sp, offset);
577 else
578 O_SET(sp, offset);
579 break;
580 case OPT_NUM:
581 if (turnoff) {
582 msgq_str(sp, M_ERR, name,
583 "035|set: %s option isn't a boolean");
584 rval = 1;
585 break;
586 }
587 if (qmark || !equals) {
588 if (!disp)
589 disp = SELECT_DISPLAY;
590 F_SET(spo, OPT_SELECTED);
591 break;
592 }
593
594 if (!isdigit(sep[0]))
595 goto badnum;
596 if ((nret =
597 nget_uslong(&value, sep, &endp, 10)) != NUM_OK) {
598 p = msg_print(sp, name, &nf);
599 t = msg_print(sp, sep, &nf2);
600 switch (nret) {
601 case NUM_ERR:
602 msgq(sp, M_SYSERR,
603 "036|set: %s option: %s", p, t);
604 break;
605 case NUM_OVER:
606 msgq(sp, M_ERR,
607 "037|set: %s option: %s: value overflow", p, t);
608 break;
609 case NUM_OK:
610 case NUM_UNDER:
611 abort();
612 }
613 if (nf)
614 FREE_SPACE(sp, p, 0);
615 if (nf2)
616 FREE_SPACE(sp, t, 0);
617 rval = 1;
618 break;
619 }
620 if (*endp && !isblank(*endp)) {
621 badnum: p = msg_print(sp, name, &nf);
622 t = msg_print(sp, sep, &nf2);
623 msgq(sp, M_ERR,
624 "038|set: %s option: %s is an illegal number", p, t);
625 if (nf)
626 FREE_SPACE(sp, p, 0);
627 if (nf2)
628 FREE_SPACE(sp, t, 0);
629 rval = 1;
630 break;
631 }
632
633 /* Some options may never be set to zero. */
634 if (F_ISSET(op, OPT_NOZERO) && value == 0) {
635 msgq_str(sp, M_ERR, name,
636 "314|set: the %s option may never be set to 0");
637 rval = 1;
638 break;
639 }
640
641 /*
642 * Do nothing if the value is unchanged, the underlying
643 * functions can be expensive.
644 */
645 if (!F_ISSET(op, OPT_ALWAYS) &&
646 O_VAL(sp, offset) == value)
647 break;
648
649 /* Report to subsystems. */
650 if (op->func != NULL &&
651 op->func(sp, spo, sep, &value) ||
652 ex_optchange(sp, offset, sep, &value) ||
653 v_optchange(sp, offset, sep, &value) ||
654 sp->gp->scr_optchange(sp, offset, sep, &value)) {
655 rval = 1;
656 break;
657 }
658
659 /* Set the value. */
660 if (o_set(sp, offset, 0, NULL, value))
661 rval = 1;
662 break;
663 case OPT_STR:
664 if (turnoff) {
665 msgq_str(sp, M_ERR, name,
666 "039|set: %s option isn't a boolean");
667 rval = 1;
668 break;
669 }
670 if (qmark || !equals) {
671 if (!disp)
672 disp = SELECT_DISPLAY;
673 F_SET(spo, OPT_SELECTED);
674 break;
675 }
676
677 /*
678 * Do nothing if the value is unchanged, the underlying
679 * functions can be expensive.
680 */
681 if (!F_ISSET(op, OPT_ALWAYS) &&
682 O_STR(sp, offset) != NULL &&
683 !strcmp(O_STR(sp, offset), sep))
684 break;
685
686 /* Report to subsystems. */
687 if (op->func != NULL &&
688 op->func(sp, spo, sep, NULL) ||
689 ex_optchange(sp, offset, sep, NULL) ||
690 v_optchange(sp, offset, sep, NULL) ||
691 sp->gp->scr_optchange(sp, offset, sep, NULL)) {
692 rval = 1;
693 break;
694 }
695
696 /* Set the value. */
697 if (o_set(sp, offset, OS_STRDUP, sep, 0))
698 rval = 1;
699 break;
700 default:
701 abort();
702 }
703 }
704 if (disp != NO_DISPLAY)
705 opts_dump(sp, disp);
706 return (rval);
707 }
708
709 /*
710 * o_set --
711 * Set an option's value.
712 *
713 * PUBLIC: int o_set __P((SCR *, int, u_int, char *, u_long));
714 */
715 int
716 o_set(sp, opt, flags, str, val)
717 SCR *sp;
718 int opt;
719 u_int flags;
720 char *str;
721 u_long val;
722 {
723 OPTION *op;
724
725 /* Set a pointer to the options area. */
726 op = F_ISSET(&sp->opts[opt], OPT_GLOBAL) ?
727 &sp->gp->opts[sp->opts[opt].o_cur.val] : &sp->opts[opt];
728
729 /* Copy the string, if requested. */
730 if (LF_ISSET(OS_STRDUP) && (str = strdup(str)) == NULL) {
731 msgq(sp, M_SYSERR, NULL);
732 return (1);
733 }
734
735 /* Free the previous string, if requested, and set the value. */
736 if LF_ISSET(OS_DEF)
737 if (LF_ISSET(OS_STR | OS_STRDUP)) {
738 if (!LF_ISSET(OS_NOFREE) && op->o_def.str != NULL)
739 free(op->o_def.str);
740 op->o_def.str = str;
741 } else
742 op->o_def.val = val;
743 else
744 if (LF_ISSET(OS_STR | OS_STRDUP)) {
745 if (!LF_ISSET(OS_NOFREE) && op->o_cur.str != NULL)
746 free(op->o_cur.str);
747 op->o_cur.str = str;
748 } else
749 op->o_cur.val = val;
750 return (0);
751 }
752
753 /*
754 * opts_empty --
755 * Return 1 if the string option is invalid, 0 if it's OK.
756 *
757 * PUBLIC: int opts_empty __P((SCR *, int, int));
758 */
759 int
760 opts_empty(sp, off, silent)
761 SCR *sp;
762 int off, silent;
763 {
764 char *p;
765
766 if ((p = O_STR(sp, off)) == NULL || p[0] == '\0') {
767 if (!silent)
768 msgq_str(sp, M_ERR, optlist[off].name,
769 "305|No %s edit option specified");
770 return (1);
771 }
772 return (0);
773 }
774
775 /*
776 * opts_dump --
777 * List the current values of selected options.
778 *
779 * PUBLIC: void opts_dump __P((SCR *, enum optdisp));
780 */
781 void
782 opts_dump(sp, type)
783 SCR *sp;
784 enum optdisp type;
785 {
786 OPTLIST const *op;
787 int base, b_num, cnt, col, colwidth, curlen, s_num;
788 int numcols, numrows, row;
789 int b_op[O_OPTIONCOUNT], s_op[O_OPTIONCOUNT];
790 char nbuf[20];
791
792 /*
793 * Options are output in two groups -- those that fit in a column and
794 * those that don't. Output is done on 6 character "tab" boundaries
795 * for no particular reason. (Since we don't output tab characters,
796 * we can ignore the terminal's tab settings.) Ignore the user's tab
797 * setting because we have no idea how reasonable it is.
798 *
799 * Find a column width we can live with, testing from 10 columns to 1.
800 */
801 for (numcols = 10; numcols > 1; --numcols) {
802 colwidth = sp->cols / numcols & ~(STANDARD_TAB - 1);
803 if (colwidth >= 10) {
804 colwidth =
805 (colwidth + STANDARD_TAB) & ~(STANDARD_TAB - 1);
806 numcols = sp->cols / colwidth;
807 break;
808 }
809 colwidth = 0;
810 }
811
812 /*
813 * Get the set of options to list, entering them into
814 * the column list or the overflow list.
815 */
816 for (b_num = s_num = 0, op = optlist; op->name != NULL; ++op) {
817 cnt = op - optlist;
818
819 /* If OPT_NDISP set, it's never displayed. */
820 if (F_ISSET(op, OPT_NDISP))
821 continue;
822
823 switch (type) {
824 case ALL_DISPLAY: /* Display all. */
825 break;
826 case CHANGED_DISPLAY: /* Display changed. */
827 /* If OPT_ADISP set, it's always "changed". */
828 if (F_ISSET(op, OPT_ADISP))
829 break;
830 switch (op->type) {
831 case OPT_0BOOL:
832 case OPT_1BOOL:
833 case OPT_NUM:
834 if (O_VAL(sp, cnt) == O_D_VAL(sp, cnt))
835 continue;
836 break;
837 case OPT_STR:
838 if (O_STR(sp, cnt) == O_D_STR(sp, cnt) ||
839 O_D_STR(sp, cnt) != NULL &&
840 !strcmp(O_STR(sp, cnt), O_D_STR(sp, cnt)))
841 continue;
842 break;
843 }
844 break;
845 case SELECT_DISPLAY: /* Display selected. */
846 if (!F_ISSET(&sp->opts[cnt], OPT_SELECTED))
847 continue;
848 break;
849 default:
850 case NO_DISPLAY:
851 abort();
852 }
853 F_CLR(&sp->opts[cnt], OPT_SELECTED);
854
855 curlen = strlen(op->name);
856 switch (op->type) {
857 case OPT_0BOOL:
858 case OPT_1BOOL:
859 if (!O_ISSET(sp, cnt))
860 curlen += 2;
861 break;
862 case OPT_NUM:
863 (void)snprintf(nbuf,
864 sizeof(nbuf), "%ld", O_VAL(sp, cnt));
865 curlen += strlen(nbuf);
866 break;
867 case OPT_STR:
868 if (O_STR(sp, cnt) != NULL)
869 curlen += strlen(O_STR(sp, cnt));
870 curlen += 3;
871 break;
872 }
873 /* Offset by 2 so there's a gap. */
874 if (curlen <= colwidth - 2)
875 s_op[s_num++] = cnt;
876 else
877 b_op[b_num++] = cnt;
878 }
879
880 if (s_num > 0) {
881 /* Figure out the number of rows. */
882 if (s_num > numcols) {
883 numrows = s_num / numcols;
884 if (s_num % numcols)
885 ++numrows;
886 } else
887 numrows = 1;
888
889 /* Display the options in sorted order. */
890 for (row = 0; row < numrows;) {
891 for (base = row, col = 0; col < numcols; ++col) {
892 cnt = opts_print(sp, &optlist[s_op[base]]);
893 if ((base += numrows) >= s_num)
894 break;
895 (void)ex_printf(sp, "%*s",
896 (int)(colwidth - cnt), "");
897 }
898 if (++row < numrows || b_num)
899 (void)ex_puts(sp, "\n");
900 }
901 }
902
903 for (row = 0; row < b_num;) {
904 (void)opts_print(sp, &optlist[b_op[row]]);
905 if (++row < b_num)
906 (void)ex_puts(sp, "\n");
907 }
908 (void)ex_puts(sp, "\n");
909 }
910
911 /*
912 * opts_print --
913 * Print out an option.
914 */
915 static int
916 opts_print(sp, op)
917 SCR *sp;
918 OPTLIST const *op;
919 {
920 int curlen, offset;
921
922 curlen = 0;
923 offset = op - optlist;
924 switch (op->type) {
925 case OPT_0BOOL:
926 case OPT_1BOOL:
927 curlen += ex_printf(sp,
928 "%s%s", O_ISSET(sp, offset) ? "" : "no", op->name);
929 break;
930 case OPT_NUM:
931 curlen += ex_printf(sp, "%s=%ld", op->name, O_VAL(sp, offset));
932 break;
933 case OPT_STR:
934 curlen += ex_printf(sp, "%s=\"%s\"", op->name,
935 O_STR(sp, offset) == NULL ? "" : O_STR(sp, offset));
936 break;
937 }
938 return (curlen);
939 }
940
941 /*
942 * opts_save --
943 * Write the current configuration to a file.
944 *
945 * PUBLIC: int opts_save __P((SCR *, FILE *));
946 */
947 int
948 opts_save(sp, fp)
949 SCR *sp;
950 FILE *fp;
951 {
952 OPTLIST const *op;
953 int ch, cnt;
954 char *p;
955
956 for (op = optlist; op->name != NULL; ++op) {
957 if (F_ISSET(op, OPT_NOSAVE))
958 continue;
959 cnt = op - optlist;
960 switch (op->type) {
961 case OPT_0BOOL:
962 case OPT_1BOOL:
963 if (O_ISSET(sp, cnt))
964 (void)fprintf(fp, "set %s\n", op->name);
965 else
966 (void)fprintf(fp, "set no%s\n", op->name);
967 break;
968 case OPT_NUM:
969 (void)fprintf(fp,
970 "set %s=%-3ld\n", op->name, O_VAL(sp, cnt));
971 break;
972 case OPT_STR:
973 if (O_STR(sp, cnt) == NULL)
974 break;
975 (void)fprintf(fp, "set ");
976 for (p = op->name; (ch = *p) != '\0'; ++p) {
977 if (isblank(ch) || ch == '\\')
978 (void)putc('\\', fp);
979 (void)putc(ch, fp);
980 }
981 (void)putc('=', fp);
982 for (p = O_STR(sp, cnt); (ch = *p) != '\0'; ++p) {
983 if (isblank(ch) || ch == '\\')
984 (void)putc('\\', fp);
985 (void)putc(ch, fp);
986 }
987 (void)putc('\n', fp);
988 break;
989 }
990 if (ferror(fp)) {
991 msgq(sp, M_SYSERR, NULL);
992 return (1);
993 }
994 }
995 return (0);
996 }
997
998 /*
999 * opts_search --
1000 * Search for an option.
1001 *
1002 * PUBLIC: OPTLIST const *opts_search __P((char *));
1003 */
1004 OPTLIST const *
1005 opts_search(name)
1006 char *name;
1007 {
1008 OPTLIST const *op, *found;
1009 OABBREV atmp, *ap;
1010 OPTLIST otmp;
1011 size_t len;
1012
1013 /* Check list of abbreviations. */
1014 atmp.name = name;
1015 if ((ap = bsearch(&atmp, abbrev, sizeof(abbrev) / sizeof(OABBREV) - 1,
1016 sizeof(OABBREV), opts_abbcmp)) != NULL)
1017 return (optlist + ap->offset);
1018
1019 /* Check list of options. */
1020 otmp.name = name;
1021 if ((op = bsearch(&otmp, optlist, sizeof(optlist) / sizeof(OPTLIST) - 1,
1022 sizeof(OPTLIST), opts_cmp)) != NULL)
1023 return (op);
1024
1025 /*
1026 * Check to see if the name is the prefix of one (and only one)
1027 * option. If so, return the option.
1028 */
1029 len = strlen(name);
1030 for (found = NULL, op = optlist; op->name != NULL; ++op) {
1031 if (op->name[0] < name[0])
1032 continue;
1033 if (op->name[0] > name[0])
1034 break;
1035 if (!memcmp(op->name, name, len)) {
1036 if (found != NULL)
1037 return (NULL);
1038 found = op;
1039 }
1040 }
1041 return (found);
1042 }
1043
1044 /*
1045 * opts_nomatch --
1046 * Standard nomatch error message for options.
1047 *
1048 * PUBLIC: void opts_nomatch __P((SCR *, char *));
1049 */
1050 void
1051 opts_nomatch(sp, name)
1052 SCR *sp;
1053 char *name;
1054 {
1055 msgq_str(sp, M_ERR, name,
1056 "033|set: no %s option: 'set all' gives all option values");
1057 }
1058
1059 static int
1060 opts_abbcmp(a, b)
1061 const void *a, *b;
1062 {
1063 return(strcmp(((OABBREV *)a)->name, ((OABBREV *)b)->name));
1064 }
1065
1066 static int
1067 opts_cmp(a, b)
1068 const void *a, *b;
1069 {
1070 return(strcmp(((OPTLIST *)a)->name, ((OPTLIST *)b)->name));
1071 }
1072
1073 /*
1074 * opts_copy --
1075 * Copy a screen's OPTION array.
1076 *
1077 * PUBLIC: int opts_copy __P((SCR *, SCR *));
1078 */
1079 int
1080 opts_copy(orig, sp)
1081 SCR *orig, *sp;
1082 {
1083 int cnt, rval;
1084
1085 /* Copy most everything without change. */
1086 memcpy(sp->opts, orig->opts, sizeof(orig->opts));
1087
1088 /* Copy the string edit options. */
1089 for (cnt = rval = 0; cnt < O_OPTIONCOUNT; ++cnt) {
1090 if (optlist[cnt].type != OPT_STR ||
1091 F_ISSET(&optlist[cnt], OPT_GLOBAL))
1092 continue;
1093 /*
1094 * If never set, or already failed, NULL out the entries --
1095 * have to continue after failure, otherwise would have two
1096 * screens referencing the same memory.
1097 */
1098 if (rval || O_STR(sp, cnt) == NULL) {
1099 o_set(sp, cnt, OS_NOFREE | OS_STR, NULL, 0);
1100 o_set(sp, cnt, OS_DEF | OS_NOFREE | OS_STR, NULL, 0);
1101 continue;
1102 }
1103
1104 /* Copy the current string. */
1105 if (o_set(sp, cnt, OS_NOFREE | OS_STRDUP, O_STR(sp, cnt), 0)) {
1106 o_set(sp, cnt, OS_DEF | OS_NOFREE | OS_STR, NULL, 0);
1107 goto nomem;
1108 }
1109
1110 /* Copy the default string. */
1111 if (O_D_STR(sp, cnt) != NULL && o_set(sp, cnt,
1112 OS_DEF | OS_NOFREE | OS_STRDUP, O_D_STR(sp, cnt), 0)) {
1113 nomem: msgq(orig, M_SYSERR, NULL);
1114 rval = 1;
1115 }
1116 }
1117 return (rval);
1118 }
1119
1120 /*
1121 * opts_free --
1122 * Free all option strings
1123 *
1124 * PUBLIC: void opts_free __P((SCR *));
1125 */
1126 void
1127 opts_free(sp)
1128 SCR *sp;
1129 {
1130 int cnt;
1131
1132 for (cnt = 0; cnt < O_OPTIONCOUNT; ++cnt) {
1133 if (optlist[cnt].type != OPT_STR ||
1134 F_ISSET(&optlist[cnt], OPT_GLOBAL))
1135 continue;
1136 if (O_STR(sp, cnt) != NULL)
1137 free(O_STR(sp, cnt));
1138 if (O_D_STR(sp, cnt) != NULL)
1139 free(O_D_STR(sp, cnt));
1140 }
1141 }
The Berkeley Vi Editor