xref: /dragonfly/contrib/nvi2/common/options.c (revision b1ac2ebb)
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 #include <sys/types.h>
13 #include <sys/queue.h>
14 #include <sys/stat.h>
15 
16 #include <bitstring.h>
17 #include <ctype.h>
18 #include <errno.h>
19 #include <limits.h>
20 #include <stdio.h>
21 #include <stdlib.h>
22 #include <string.h>
23 #include <unctrl.h>
24 #include <unistd.h>
25 
26 #include "common.h"
27 #include "../vi/vi.h"
28 #include "pathnames.h"
29 
30 static int	 	 opts_abbcmp(const void *, const void *);
31 static int	 	 opts_cmp(const void *, const void *);
32 static int	 	 opts_print(SCR *, OPTLIST const *);
33 
34 #ifdef USE_WIDECHAR
35 #define OPT_WC	    0
36 #else
37 #define OPT_WC	    (OPT_NOSAVE | OPT_NDISP)
38 #endif
39 
40 /*
41  * O'Reilly noted options and abbreviations are from "Learning the VI Editor",
42  * Fifth Edition, May 1992.  There's no way of knowing what systems they are
43  * actually from.
44  *
45  * HPUX noted options and abbreviations are from "The Ultimate Guide to the
46  * VI and EX Text Editors", 1990.
47  */
48 OPTLIST const optlist[] = {
49 /* O_ALTWERASE	  4.4BSD */
50 	{L("altwerase"),	f_altwerase,	OPT_0BOOL,	0},
51 /* O_AUTOINDENT	    4BSD */
52 	{L("autoindent"),	NULL,		OPT_0BOOL,	0},
53 /* O_AUTOPRINT	    4BSD */
54 	{L("autoprint"),	NULL,		OPT_1BOOL,	0},
55 /* O_AUTOWRITE	    4BSD */
56 	{L("autowrite"),	NULL,		OPT_0BOOL,	0},
57 /* O_BACKUP	  4.4BSD */
58 	{L("backup"),	NULL,		OPT_STR,	0},
59 /* O_BEAUTIFY	    4BSD */
60 	{L("beautify"),	NULL,		OPT_0BOOL,	0},
61 /* O_CDPATH	  4.4BSD */
62 	{L("cdpath"),	NULL,		OPT_STR,	0},
63 /* O_CEDIT	  4.4BSD */
64 	{L("cedit"),	NULL,		OPT_STR,	0},
65 /* O_COLUMNS	  4.4BSD */
66 	{L("columns"),	f_columns,	OPT_NUM,	OPT_NOSAVE},
67 /* O_COMBINED */
68 	{L("combined"),	NULL,		OPT_0BOOL,	OPT_NOSET|OPT_WC},
69 /* O_COMMENT	  4.4BSD */
70 	{L("comment"),	NULL,		OPT_0BOOL,	0},
71 /* O_TMPDIR	    4BSD */
72 	{L("directory"),	NULL,		OPT_STR,	0},
73 /* O_EDCOMPATIBLE   4BSD */
74 	{L("edcompatible"),NULL,		OPT_0BOOL,	0},
75 /* O_ERRORBELLS	    4BSD */
76 	{L("errorbells"),	NULL,		OPT_0BOOL,	0},
77 /* O_ESCAPETIME	  4.4BSD */
78 	{L("escapetime"),	NULL,		OPT_NUM,	0},
79 /* O_EXPANDTAB	NetBSD 5.0 */
80 	{L("expandtab"),	NULL,		OPT_0BOOL,	0},
81 /* O_EXRC	System V (undocumented) */
82 	{L("exrc"),	NULL,		OPT_0BOOL,	0},
83 /* O_EXTENDED	  4.4BSD */
84 	{L("extended"),	f_recompile,	OPT_0BOOL,	0},
85 /* O_FILEC	  4.4BSD */
86 	{L("filec"),	NULL,		OPT_STR,	0},
87 /* O_FILEENCODING */
88 	{L("fileencoding"),f_encoding,	OPT_STR,	OPT_WC},
89 /* O_FLASH	    HPUX */
90 	{L("flash"),	NULL,		OPT_1BOOL,	0},
91 /* O_HARDTABS	    4BSD */
92 	{L("hardtabs"),	NULL,		OPT_NUM,	0},
93 /* O_ICLOWER	  4.4BSD */
94 	{L("iclower"),	f_recompile,	OPT_0BOOL,	0},
95 /* O_IGNORECASE	    4BSD */
96 	{L("ignorecase"),	f_recompile,	OPT_0BOOL,	0},
97 /* O_INPUTENCODING */
98 	{L("inputencoding"),f_encoding,	OPT_STR,	OPT_WC},
99 /* O_KEYTIME	  4.4BSD */
100 	{L("keytime"),	NULL,		OPT_NUM,	0},
101 /* O_LEFTRIGHT	  4.4BSD */
102 	{L("leftright"),	f_reformat,	OPT_0BOOL,	0},
103 /* O_LINES	  4.4BSD */
104 	{L("lines"),	f_lines,	OPT_NUM,	OPT_NOSAVE},
105 /* O_LISP	    4BSD
106  *	XXX
107  *	When the lisp option is implemented, delete the OPT_NOSAVE flag,
108  *	so that :mkexrc dumps it.
109  */
110 	{L("lisp"),	f_lisp,		OPT_0BOOL,	OPT_NOSAVE},
111 /* O_LIST	    4BSD */
112 	{L("list"),	f_reformat,	OPT_0BOOL,	0},
113 /* O_LOCKFILES	  4.4BSD
114  *	XXX
115  *	Locking isn't reliable enough over NFS to require it, in addition,
116  *	it's a serious startup performance problem over some remote links.
117  */
118 	{L("lock"),	NULL,		OPT_1BOOL,	0},
119 /* O_MAGIC	    4BSD */
120 	{L("magic"),	NULL,		OPT_1BOOL,	0},
121 /* O_MATCHCHARS	  NetBSD 2.0 */
122 	{L("matchchars"),	NULL,		OPT_STR,	OPT_PAIRS},
123 /* O_MATCHTIME	  4.4BSD */
124 	{L("matchtime"),	NULL,		OPT_NUM,	0},
125 /* O_MESG	    4BSD */
126 	{L("mesg"),	NULL,		OPT_1BOOL,	0},
127 /* O_MODELINE	    4BSD
128  *	!!!
129  *	This has been documented in historical systems as both "modeline"
130  *	and as "modelines".  Regardless of the name, this option represents
131  *	a security problem of mammoth proportions, not to mention a stunning
132  *	example of what your intro CS professor referred to as the perils of
133  *	mixing code and data.  Don't add it, or I will kill you.
134  */
135 	{L("modeline"),	NULL,		OPT_0BOOL,	OPT_NOSET},
136 /* O_MSGCAT	  4.4BSD */
137 	{L("msgcat"),	f_msgcat,	OPT_STR,	0},
138 /* O_NOPRINT	  4.4BSD */
139 	{L("noprint"),	f_print,	OPT_STR,	0},
140 /* O_NUMBER	    4BSD */
141 	{L("number"),	f_reformat,	OPT_0BOOL,	0},
142 /* O_OCTAL	  4.4BSD */
143 	{L("octal"),	f_print,	OPT_0BOOL,	0},
144 /* O_OPEN	    4BSD */
145 	{L("open"),	NULL,		OPT_1BOOL,	0},
146 /* O_OPTIMIZE	    4BSD */
147 	{L("optimize"),	NULL,		OPT_1BOOL,	0},
148 /* O_PARAGRAPHS	    4BSD */
149 	{L("paragraphs"),	NULL,		OPT_STR,	OPT_PAIRS},
150 /* O_PATH	  4.4BSD */
151 	{L("path"),	NULL,		OPT_STR,	0},
152 /* O_PRINT	  4.4BSD */
153 	{L("print"),	f_print,	OPT_STR,	0},
154 /* O_PROMPT	    4BSD */
155 	{L("prompt"),	NULL,		OPT_1BOOL,	0},
156 /* O_READONLY	    4BSD (undocumented) */
157 	{L("readonly"),	f_readonly,	OPT_0BOOL,	OPT_ALWAYS},
158 /* O_RECDIR	  4.4BSD */
159 	{L("recdir"),	NULL,		OPT_STR,	0},
160 /* O_REDRAW	    4BSD */
161 	{L("redraw"),	NULL,		OPT_0BOOL,	0},
162 /* O_REMAP	    4BSD */
163 	{L("remap"),	NULL,		OPT_1BOOL,	0},
164 /* O_REPORT	    4BSD */
165 	{L("report"),	NULL,		OPT_NUM,	0},
166 /* O_RULER	  4.4BSD */
167 	{L("ruler"),	NULL,		OPT_0BOOL,	0},
168 /* O_SCROLL	    4BSD */
169 	{L("scroll"),	NULL,		OPT_NUM,	0},
170 /* O_SEARCHINCR	  4.4BSD */
171 	{L("searchincr"),	NULL,		OPT_0BOOL,	0},
172 /* O_SECTIONS	    4BSD */
173 	{L("sections"),	NULL,		OPT_STR,	OPT_PAIRS},
174 /* O_SECURE	  4.4BSD */
175 	{L("secure"),	NULL,		OPT_0BOOL,	OPT_NOUNSET},
176 /* O_SHELL	    4BSD */
177 	{L("shell"),	NULL,		OPT_STR,	0},
178 /* O_SHELLMETA	  4.4BSD */
179 	{L("shellmeta"),	NULL,		OPT_STR,	0},
180 /* O_SHIFTWIDTH	    4BSD */
181 	{L("shiftwidth"),	NULL,		OPT_NUM,	OPT_NOZERO},
182 /* O_SHOWMATCH	    4BSD */
183 	{L("showmatch"),	NULL,		OPT_0BOOL,	0},
184 /* O_SHOWMODE	  4.4BSD */
185 	{L("showmode"),	NULL,		OPT_0BOOL,	0},
186 /* O_SIDESCROLL	  4.4BSD */
187 	{L("sidescroll"),	NULL,		OPT_NUM,	OPT_NOZERO},
188 /* O_SLOWOPEN	    4BSD  */
189 	{L("slowopen"),	NULL,		OPT_0BOOL,	0},
190 /* O_SOURCEANY	    4BSD (undocumented)
191  *	!!!
192  *	Historic vi, on startup, source'd $HOME/.exrc and ./.exrc, if they
193  *	were owned by the user.  The sourceany option was an undocumented
194  *	feature of historic vi which permitted the startup source'ing of
195  *	.exrc files the user didn't own.  This is an obvious security problem,
196  *	and we ignore the option.
197  */
198 	{L("sourceany"),	NULL,		OPT_0BOOL,	OPT_NOSET},
199 /* O_TABSTOP	    4BSD */
200 	{L("tabstop"),	f_reformat,	OPT_NUM,	OPT_NOZERO},
201 /* O_TAGLENGTH	    4BSD */
202 	{L("taglength"),	NULL,		OPT_NUM,	0},
203 /* O_TAGS	    4BSD */
204 	{L("tags"),	NULL,		OPT_STR,	0},
205 /* O_TERM	    4BSD
206  *	!!!
207  *	By default, the historic vi always displayed information about two
208  *	options, redraw and term.  Term seems sufficient.
209  */
210 	{L("term"),	NULL,		OPT_STR,	OPT_ADISP|OPT_NOSAVE},
211 /* O_TERSE	    4BSD */
212 	{L("terse"),	NULL,		OPT_0BOOL,	0},
213 /* O_TILDEOP      4.4BSD */
214 	{L("tildeop"),	NULL,		OPT_0BOOL,	0},
215 /* O_TIMEOUT	    4BSD (undocumented) */
216 	{L("timeout"),	NULL,		OPT_1BOOL,	0},
217 /* O_TTYWERASE	  4.4BSD */
218 	{L("ttywerase"),	f_ttywerase,	OPT_0BOOL,	0},
219 /* O_VERBOSE	  4.4BSD */
220 	{L("verbose"),	NULL,		OPT_0BOOL,	0},
221 /* O_W1200	    4BSD */
222 	{L("w1200"),	f_w1200,	OPT_NUM,	OPT_NDISP|OPT_NOSAVE},
223 /* O_W300	    4BSD */
224 	{L("w300"),	f_w300,		OPT_NUM,	OPT_NDISP|OPT_NOSAVE},
225 /* O_W9600	    4BSD */
226 	{L("w9600"),	f_w9600,	OPT_NUM,	OPT_NDISP|OPT_NOSAVE},
227 /* O_WARN	    4BSD */
228 	{L("warn"),	NULL,		OPT_1BOOL,	0},
229 /* O_WINDOW	    4BSD */
230 	{L("window"),	f_window,	OPT_NUM,	0},
231 /* O_WINDOWNAME	    4BSD */
232 	{L("windowname"),	NULL,		OPT_0BOOL,	0},
233 /* O_WRAPLEN	  4.4BSD */
234 	{L("wraplen"),	NULL,		OPT_NUM,	0},
235 /* O_WRAPMARGIN	    4BSD */
236 	{L("wrapmargin"),	NULL,		OPT_NUM,	0},
237 /* O_WRAPSCAN	    4BSD */
238 	{L("wrapscan"),	NULL,		OPT_1BOOL,	0},
239 /* O_WRITEANY	    4BSD */
240 	{L("writeany"),	NULL,		OPT_0BOOL,	0},
241 	{NULL},
242 };
243 
244 typedef struct abbrev {
245 	CHAR_T *name;
246 	int offset;
247 } OABBREV;
248 
249 static OABBREV const abbrev[] = {
250 	{L("ai"),	O_AUTOINDENT},		/*     4BSD */
251 	{L("ap"),	O_AUTOPRINT},		/*     4BSD */
252 	{L("aw"),	O_AUTOWRITE},		/*     4BSD */
253 	{L("bf"),	O_BEAUTIFY},		/*     4BSD */
254 	{L("co"),	O_COLUMNS},		/*   4.4BSD */
255 	{L("dir"),	O_TMPDIR},		/*     4BSD */
256 	{L("eb"),	O_ERRORBELLS},		/*     4BSD */
257 	{L("ed"),	O_EDCOMPATIBLE},	/*     4BSD */
258 	{L("et"),	O_EXPANDTAB},		/* NetBSD 5.0 */
259 	{L("ex"),	O_EXRC},		/* System V (undocumented) */
260 	{L("fe"),	O_FILEENCODING},
261 	{L("ht"),	O_HARDTABS},		/*     4BSD */
262 	{L("ic"),	O_IGNORECASE},		/*     4BSD */
263 	{L("ie"),	O_INPUTENCODING},
264 	{L("li"),	O_LINES},		/*   4.4BSD */
265 	{L("modelines"),	O_MODELINE},		/*     HPUX */
266 	{L("nu"),	O_NUMBER},		/*     4BSD */
267 	{L("opt"),	O_OPTIMIZE},		/*     4BSD */
268 	{L("para"),	O_PARAGRAPHS},		/*     4BSD */
269 	{L("re"),	O_REDRAW},		/* O'Reilly */
270 	{L("ro"),	O_READONLY},		/*     4BSD (undocumented) */
271 	{L("scr"),	O_SCROLL},		/*     4BSD (undocumented) */
272 	{L("sect"),	O_SECTIONS},		/* O'Reilly */
273 	{L("sh"),	O_SHELL},		/*     4BSD */
274 	{L("slow"),	O_SLOWOPEN},		/*     4BSD */
275 	{L("sm"),	O_SHOWMATCH},		/*     4BSD */
276 	{L("smd"),	O_SHOWMODE},		/*     4BSD */
277 	{L("sw"),	O_SHIFTWIDTH},		/*     4BSD */
278 	{L("tag"),	O_TAGS},		/*     4BSD (undocumented) */
279 	{L("tl"),	O_TAGLENGTH},		/*     4BSD */
280 	{L("to"),	O_TIMEOUT},		/*     4BSD (undocumented) */
281 	{L("ts"),	O_TABSTOP},		/*     4BSD */
282 	{L("tty"),	O_TERM},		/*     4BSD (undocumented) */
283 	{L("ttytype"),	O_TERM},		/*     4BSD (undocumented) */
284 	{L("w"),	O_WINDOW},		/* O'Reilly */
285 	{L("wa"),	O_WRITEANY},		/*     4BSD */
286 	{L("wi"),	O_WINDOW},		/*     4BSD (undocumented) */
287 	{L("wl"),	O_WRAPLEN},		/*   4.4BSD */
288 	{L("wm"),	O_WRAPMARGIN},		/*     4BSD */
289 	{L("ws"),	O_WRAPSCAN},		/*     4BSD */
290 	{NULL},
291 };
292 
293 /*
294  * opts_init --
295  *	Initialize some of the options.
296  *
297  * PUBLIC: int opts_init(SCR *, int *);
298  */
299 int
opts_init(SCR * sp,int * oargs)300 opts_init(SCR *sp, int *oargs)
301 {
302 	ARGS *argv[2], a, b;
303 	OPTLIST const *op;
304 	u_long v;
305 	int cnt, optindx = 0;
306 	char *s;
307 	CHAR_T b2[1024];
308 
309 	a.bp = b2;
310 	b.bp = NULL;
311 	a.len = b.len = 0;
312 	argv[0] = &a;
313 	argv[1] = &b;
314 
315 	/* Set numeric and string default values. */
316 #define	OI(indx, str) {							\
317 	a.len = STRLEN(str);						\
318 	if ((CHAR_T*)str != b2)	  /* GCC puts strings in text-space. */	\
319 		(void)MEMCPY(b2, str, a.len+1);				\
320 	if (opts_set(sp, argv, NULL)) {					\
321 		 optindx = indx;					\
322 		goto err;						\
323 	}								\
324 }
325 	/*
326 	 * Indirect global options to global space.  Specifically, set up
327 	 * terminal, lines, columns first, they're used by other options.
328 	 * Note, don't set the flags until we've set up the indirection.
329 	 */
330 	if (o_set(sp, O_TERM, 0, NULL, GO_TERM))
331 		goto err;
332 	F_SET(&sp->opts[O_TERM], OPT_GLOBAL);
333 	if (o_set(sp, O_LINES, 0, NULL, GO_LINES))
334 		goto err;
335 	F_SET(&sp->opts[O_LINES], OPT_GLOBAL);
336 	if (o_set(sp, O_COLUMNS, 0, NULL, GO_COLUMNS))
337 		goto err;
338 	F_SET(&sp->opts[O_COLUMNS], OPT_GLOBAL);
339 	if (o_set(sp, O_SECURE, 0, NULL, GO_SECURE))
340 		goto err;
341 	F_SET(&sp->opts[O_SECURE], OPT_GLOBAL);
342 
343 	/* Initialize string values. */
344 	(void)SPRINTF(b2, SIZE(b2),
345 	    L("cdpath=%s"), (s = getenv("CDPATH")) == NULL ? ":" : s);
346 	OI(O_CDPATH, b2);
347 	OI(O_CEDIT, L("cedit=\033"));
348 
349 	/*
350 	 * !!!
351 	 * Vi historically stored temporary files in /var/tmp.  We store them
352 	 * in /tmp by default, hoping it's a memory based file system.  There
353 	 * are two ways to change this -- the user can set either the directory
354 	 * option or the TMPDIR environmental variable.
355 	 */
356 	(void)SPRINTF(b2, SIZE(b2),
357 	    L("directory=%s"), (s = getenv("TMPDIR")) == NULL ? _PATH_TMP : s);
358 	OI(O_TMPDIR, b2);
359 	OI(O_ESCAPETIME, L("escapetime=6"));
360 	OI(O_FILEC, L("filec=\t"));
361 	OI(O_KEYTIME, L("keytime=6"));
362 	OI(O_MATCHCHARS, L("matchchars=()[]{}"));
363 	OI(O_MATCHTIME, L("matchtime=7"));
364 	(void)SPRINTF(b2, SIZE(b2), L("msgcat=%s"), _PATH_MSGCAT);
365 	OI(O_MSGCAT, b2);
366 	OI(O_REPORT, L("report=5"));
367 	OI(O_PARAGRAPHS, L("paragraphs=IPLPPPQPP LIpplpipbp"));
368 	(void)SPRINTF(b2, SIZE(b2), L("path=%s"), "");
369 	OI(O_PATH, b2);
370 	(void)SPRINTF(b2, SIZE(b2), L("recdir=%s"), NVI_PATH_PRESERVE);
371 	OI(O_RECDIR, b2);
372 	OI(O_SECTIONS, L("sections=NHSHH HUnhsh"));
373 	(void)SPRINTF(b2, SIZE(b2),
374 	    L("shell=%s"), (s = getenv("SHELL")) == NULL ? _PATH_BSHELL : s);
375 	OI(O_SHELL, b2);
376 	OI(O_SHELLMETA, L("shellmeta=~{[*?$`'\"\\"));
377 	OI(O_SHIFTWIDTH, L("shiftwidth=8"));
378 	OI(O_SIDESCROLL, L("sidescroll=16"));
379 	OI(O_TABSTOP, L("tabstop=8"));
380 	(void)SPRINTF(b2, SIZE(b2), L("tags=%s"), _PATH_TAGS);
381 	OI(O_TAGS, b2);
382 
383 	/*
384 	 * XXX
385 	 * Initialize O_SCROLL here, after term; initializing term should
386 	 * have created a LINES/COLUMNS value.
387 	 */
388 	if ((v = (O_VAL(sp, O_LINES) - 1) / 2) == 0)
389 		v = 1;
390 	(void)SPRINTF(b2, SIZE(b2), L("scroll=%ld"), v);
391 	OI(O_SCROLL, b2);
392 
393 	/*
394 	 * The default window option values are:
395 	 *		8 if baud rate <=  600
396 	 *	       16 if baud rate <= 1200
397 	 *	LINES - 1 if baud rate  > 1200
398 	 *
399 	 * Note, the windows option code will correct any too-large value
400 	 * or when the O_LINES value is 1.
401 	 */
402 	if (sp->gp->scr_baud(sp, &v))
403 		return (1);
404 	if (v <= 600)
405 		v = 8;
406 	else if (v <= 1200)
407 		v = 16;
408 	else if ((v = O_VAL(sp, O_LINES) - 1) == 0)
409 		v = 1;
410 
411 	(void)SPRINTF(b2, SIZE(b2), L("window=%lu"), v);
412 	OI(O_WINDOW, b2);
413 
414 	/*
415 	 * Set boolean default values, and copy all settings into the default
416 	 * information.  OS_NOFREE is set, we're copying, not replacing.
417 	 */
418 	for (op = optlist, cnt = 0; op->name != NULL; ++op, ++cnt) {
419 		if (F_ISSET(op, OPT_GLOBAL))
420 			continue;
421 		switch (op->type) {
422 		case OPT_0BOOL:
423 			break;
424 		case OPT_1BOOL:
425 			O_SET(sp, cnt);
426 			O_D_SET(sp, cnt);
427 			break;
428 		case OPT_NUM:
429 			o_set(sp, cnt, OS_DEF, NULL, O_VAL(sp, cnt));
430 			break;
431 		case OPT_STR:
432 			if (O_STR(sp, cnt) != NULL && o_set(sp, cnt,
433 			    OS_DEF | OS_NOFREE | OS_STRDUP, O_STR(sp, cnt), 0))
434 				goto err;
435 			break;
436 		default:
437 			abort();
438 		}
439 	}
440 
441 	/*
442 	 * !!!
443 	 * Some options can be initialized by the command name or the
444 	 * command-line arguments.  They don't set the default values,
445 	 * it's historic practice.
446 	 */
447 	for (; *oargs != -1; ++oargs)
448 		OI(*oargs, optlist[*oargs].name);
449 #undef OI
450 	return (0);
451 
452 err:	msgq_wstr(sp, M_ERR, optlist[optindx].name,
453 	    "031|Unable to set default %s option");
454 	return (1);
455 }
456 
457 /*
458  * opts_set --
459  *	Change the values of one or more options.
460  *
461  * PUBLIC: int opts_set(SCR *, ARGS *[], char *);
462  */
463 int
opts_set(SCR * sp,ARGS * argv[],char * usage)464 opts_set(SCR *sp, ARGS *argv[], char *usage)
465 {
466 	enum optdisp disp;
467 	enum nresult nret;
468 	OPTLIST const *op;
469 	OPTION *spo;
470 	u_long isset, turnoff, value;
471 	int ch, equals, nf, nf2, offset, qmark, rval;
472 	CHAR_T *endp, *name, *p, *sep;
473 	char *p2, *t2;
474 	char *np;
475 	size_t nlen;
476 
477 	disp = NO_DISPLAY;
478 	for (rval = 0; argv[0]->len != 0; ++argv) {
479 		/*
480 		 * The historic vi dumped the options for each occurrence of
481 		 * "all" in the set list.  Puhleeze.
482 		 */
483 		if (!STRCMP(argv[0]->bp, L("all"))) {
484 			disp = ALL_DISPLAY;
485 			continue;
486 		}
487 
488 		/* Find equals sign or question mark. */
489 		for (sep = NULL, equals = qmark = 0,
490 		    p = name = argv[0]->bp; (ch = *p) != '\0'; ++p)
491 			if (ch == '=' || ch == '?') {
492 				if (p == name) {
493 					if (usage != NULL)
494 						msgq(sp, M_ERR,
495 						    "032|Usage: %s", usage);
496 					return (1);
497 				}
498 				sep = p;
499 				if (ch == '=')
500 					equals = 1;
501 				else
502 					qmark = 1;
503 				break;
504 			}
505 
506 		turnoff = 0;
507 		op = NULL;
508 		if (sep != NULL)
509 			*sep++ = '\0';
510 
511 		/* Search for the name, then name without any leading "no". */
512 		if ((op = opts_search(name)) == NULL &&
513 		    name[0] == 'n' && name[1] == 'o') {
514 			turnoff = 1;
515 			name += 2;
516 			op = opts_search(name);
517 		}
518 		if (op == NULL) {
519 			opts_nomatch(sp, name);
520 			rval = 1;
521 			continue;
522 		}
523 
524 		/* Find current option values. */
525 		offset = op - optlist;
526 		spo = sp->opts + offset;
527 
528 		/*
529 		 * !!!
530 		 * Historically, the question mark could be a separate
531 		 * argument.
532 		 */
533 		if (!equals && !qmark &&
534 		    argv[1]->len == 1 && argv[1]->bp[0] == '?') {
535 			++argv;
536 			qmark = 1;
537 		}
538 
539 		/* Set name, value. */
540 		switch (op->type) {
541 		case OPT_0BOOL:
542 		case OPT_1BOOL:
543 			/* Some options may not be reset. */
544 			if (F_ISSET(op, OPT_NOUNSET) && turnoff) {
545 				msgq_wstr(sp, M_ERR, name,
546 			    "291|set: the %s option may not be turned off");
547 				rval = 1;
548 				break;
549 			}
550 
551 			/* Some options may not be set. */
552 			if (F_ISSET(op, OPT_NOSET) && !turnoff) {
553 				msgq_wstr(sp, M_ERR, name,
554 			    "313|set: the %s option may never be turned on");
555 				rval = 1;
556 				break;
557 			}
558 
559 			if (equals) {
560 				msgq_wstr(sp, M_ERR, name,
561 			    "034|set: [no]%s option doesn't take a value");
562 				rval = 1;
563 				break;
564 			}
565 			if (qmark) {
566 				if (!disp)
567 					disp = SELECT_DISPLAY;
568 				F_SET(spo, OPT_SELECTED);
569 				break;
570 			}
571 
572 			/*
573 			 * Do nothing if the value is unchanged, the underlying
574 			 * functions can be expensive.
575 			 */
576 			isset = !turnoff;
577 			if (!F_ISSET(op, OPT_ALWAYS))
578 				if (isset) {
579 					if (O_ISSET(sp, offset))
580 						break;
581 				} else
582 					if (!O_ISSET(sp, offset))
583 						break;
584 
585 			/* Report to subsystems. */
586 			if ((op->func != NULL &&
587 			    op->func(sp, spo, NULL, &isset)) ||
588 			    ex_optchange(sp, offset, NULL, &isset) ||
589 			    v_optchange(sp, offset, NULL, &isset) ||
590 			    sp->gp->scr_optchange(sp, offset, NULL, &isset)) {
591 				rval = 1;
592 				break;
593 			}
594 
595 			/* Set the value. */
596 			if (isset)
597 				O_SET(sp, offset);
598 			else
599 				O_CLR(sp, offset);
600 			break;
601 		case OPT_NUM:
602 			if (turnoff) {
603 				msgq_wstr(sp, M_ERR, name,
604 				    "035|set: %s option isn't a boolean");
605 				rval = 1;
606 				break;
607 			}
608 			if (qmark || !equals) {
609 				if (!disp)
610 					disp = SELECT_DISPLAY;
611 				F_SET(spo, OPT_SELECTED);
612 				break;
613 			}
614 
615 			if (!ISDIGIT(sep[0]))
616 				goto badnum;
617 			if ((nret =
618 			    nget_uslong(&value, sep, &endp, 10)) != NUM_OK) {
619 				INT2CHAR(sp, name, STRLEN(name) + 1,
620 					     np, nlen);
621 				p2 = msg_print(sp, np, &nf);
622 				INT2CHAR(sp, sep, STRLEN(sep) + 1,
623 					     np, nlen);
624 				t2 = msg_print(sp, np, &nf2);
625 				switch (nret) {
626 				case NUM_ERR:
627 					msgq(sp, M_SYSERR,
628 					    "036|set: %s option: %s", p2, t2);
629 					break;
630 				case NUM_OVER:
631 					msgq(sp, M_ERR,
632 			    "037|set: %s option: %s: value overflow", p2, t2);
633 					break;
634 				case NUM_OK:
635 				case NUM_UNDER:
636 					abort();
637 				}
638 				if (nf)
639 					FREE_SPACE(sp, p2, 0);
640 				if (nf2)
641 					FREE_SPACE(sp, t2, 0);
642 				rval = 1;
643 				break;
644 			}
645 			if (*endp && !cmdskip(*endp)) {
646 badnum:				INT2CHAR(sp, name, STRLEN(name) + 1,
647 					     np, nlen);
648 				p2 = msg_print(sp, np, &nf);
649 				INT2CHAR(sp, sep, STRLEN(sep) + 1,
650 					     np, nlen);
651 				t2 = msg_print(sp, np, &nf2);
652 				msgq(sp, M_ERR,
653 		    "038|set: %s option: %s is an illegal number", p2, t2);
654 				if (nf)
655 					FREE_SPACE(sp, p2, 0);
656 				if (nf2)
657 					FREE_SPACE(sp, t2, 0);
658 				rval = 1;
659 				break;
660 			}
661 
662 			/* Some options may never be set to zero. */
663 			if (F_ISSET(op, OPT_NOZERO) && value == 0) {
664 				msgq_wstr(sp, M_ERR, name,
665 			    "314|set: the %s option may never be set to 0");
666 				rval = 1;
667 				break;
668 			}
669 
670 			/*
671 			 * Do nothing if the value is unchanged, the underlying
672 			 * functions can be expensive.
673 			 */
674 			if (!F_ISSET(op, OPT_ALWAYS) &&
675 			    O_VAL(sp, offset) == value)
676 				break;
677 
678 			/* Report to subsystems. */
679 			INT2CHAR(sp, sep, STRLEN(sep) + 1, np, nlen);
680 			if ((op->func != NULL &&
681 			    op->func(sp, spo, np, &value)) ||
682 			    ex_optchange(sp, offset, np, &value) ||
683 			    v_optchange(sp, offset, np, &value) ||
684 			    sp->gp->scr_optchange(sp, offset, np, &value)) {
685 				rval = 1;
686 				break;
687 			}
688 
689 			/* Set the value. */
690 			if (o_set(sp, offset, 0, NULL, value))
691 				rval = 1;
692 			break;
693 		case OPT_STR:
694 			if (turnoff) {
695 				msgq_wstr(sp, M_ERR, name,
696 				    "039|set: %s option isn't a boolean");
697 				rval = 1;
698 				break;
699 			}
700 			if (qmark || !equals) {
701 				if (!disp)
702 					disp = SELECT_DISPLAY;
703 				F_SET(spo, OPT_SELECTED);
704 				break;
705 			}
706 
707 			/* Check for strings that must have even length. */
708 			if (F_ISSET(op, OPT_PAIRS) && STRLEN(sep) & 1) {
709 				msgq_wstr(sp, M_ERR, name,
710 				    "047|The %s option must be in two character groups");
711 				rval = 1;
712 				break;
713 			}
714 
715 			/*
716 			 * Do nothing if the value is unchanged, the underlying
717 			 * functions can be expensive.
718 			 */
719 			INT2CHAR(sp, sep, STRLEN(sep) + 1, np, nlen);
720 			if (!F_ISSET(op, OPT_ALWAYS) &&
721 			    O_STR(sp, offset) != NULL &&
722 			    !strcmp(O_STR(sp, offset), np))
723 				break;
724 
725 			/* Report to subsystems. */
726 			if ((op->func != NULL &&
727 			    op->func(sp, spo, np, NULL)) ||
728 			    ex_optchange(sp, offset, np, NULL) ||
729 			    v_optchange(sp, offset, np, NULL) ||
730 			    sp->gp->scr_optchange(sp, offset, np, NULL)) {
731 				rval = 1;
732 				break;
733 			}
734 
735 			/* Set the value. */
736 			if (o_set(sp, offset, OS_STRDUP, np, 0))
737 				rval = 1;
738 			break;
739 		default:
740 			abort();
741 		}
742 	}
743 	if (disp != NO_DISPLAY)
744 		opts_dump(sp, disp);
745 	return (rval);
746 }
747 
748 /*
749  * o_set --
750  *	Set an option's value.
751  *
752  * PUBLIC: int o_set(SCR *, int, u_int, char *, u_long);
753  */
754 int
o_set(SCR * sp,int opt,u_int flags,char * str,u_long val)755 o_set(SCR *sp, int opt, u_int flags, char *str, u_long val)
756 {
757 	OPTION *op;
758 
759 	/* Set a pointer to the options area. */
760 	op = F_ISSET(&sp->opts[opt], OPT_GLOBAL) ?
761 	    &sp->gp->opts[sp->opts[opt].o_cur.val] : &sp->opts[opt];
762 
763 	/* Copy the string, if requested. */
764 	if (LF_ISSET(OS_STRDUP) && (str = strdup(str)) == NULL) {
765 		msgq(sp, M_SYSERR, NULL);
766 		return (1);
767 	}
768 
769 	/* Free the previous string, if requested, and set the value. */
770 	if LF_ISSET(OS_DEF)
771 		if (LF_ISSET(OS_STR | OS_STRDUP)) {
772 			if (!LF_ISSET(OS_NOFREE))
773 				free(op->o_def.str);
774 			op->o_def.str = str;
775 		} else
776 			op->o_def.val = val;
777 	else
778 		if (LF_ISSET(OS_STR | OS_STRDUP)) {
779 			if (!LF_ISSET(OS_NOFREE))
780 				free(op->o_cur.str);
781 			op->o_cur.str = str;
782 		} else
783 			op->o_cur.val = val;
784 	return (0);
785 }
786 
787 /*
788  * opts_empty --
789  *	Return 1 if the string option is invalid, 0 if it's OK.
790  *
791  * PUBLIC: int opts_empty(SCR *, int, int);
792  */
793 int
opts_empty(SCR * sp,int off,int silent)794 opts_empty(SCR *sp, int off, int silent)
795 {
796 	char *p;
797 
798 	if ((p = O_STR(sp, off)) == NULL || p[0] == '\0') {
799 		if (!silent)
800 			msgq_wstr(sp, M_ERR, optlist[off].name,
801 			    "305|No %s edit option specified");
802 		return (1);
803 	}
804 	return (0);
805 }
806 
807 /*
808  * opts_dump --
809  *	List the current values of selected options.
810  *
811  * PUBLIC: void opts_dump(SCR *, enum optdisp);
812  */
813 void
opts_dump(SCR * sp,enum optdisp type)814 opts_dump(SCR *sp, enum optdisp type)
815 {
816 	OPTLIST const *op;
817 	int base, b_num, cnt, col, colwidth, curlen, s_num;
818 	int numcols, numrows, row;
819 	int b_op[O_OPTIONCOUNT], s_op[O_OPTIONCOUNT];
820 	char nbuf[20];
821 
822 	/*
823 	 * Options are output in two groups -- those that fit in a column and
824 	 * those that don't.  Output is done on 6 character "tab" boundaries
825 	 * for no particular reason.  (Since we don't output tab characters,
826 	 * we can ignore the terminal's tab settings.)  Ignore the user's tab
827 	 * setting because we have no idea how reasonable it is.
828 	 *
829 	 * Find a column width we can live with, testing from 10 columns to 1.
830 	 */
831 	for (numcols = 10; numcols > 1; --numcols) {
832 		colwidth = sp->cols / numcols & ~(STANDARD_TAB - 1);
833 		if (colwidth >= 10) {
834 			colwidth =
835 			    (colwidth + STANDARD_TAB) & ~(STANDARD_TAB - 1);
836 			numcols = sp->cols / colwidth;
837 			break;
838 		}
839 		colwidth = 0;
840 	}
841 
842 	/*
843 	 * Get the set of options to list, entering them into
844 	 * the column list or the overflow list.
845 	 */
846 	for (b_num = s_num = 0, op = optlist; op->name != NULL; ++op) {
847 		cnt = op - optlist;
848 
849 		/* If OPT_NDISP set, it's never displayed. */
850 		if (F_ISSET(op, OPT_NDISP))
851 			continue;
852 
853 		switch (type) {
854 		case ALL_DISPLAY:		/* Display all. */
855 			break;
856 		case CHANGED_DISPLAY:		/* Display changed. */
857 			/* If OPT_ADISP set, it's always "changed". */
858 			if (F_ISSET(op, OPT_ADISP))
859 				break;
860 			switch (op->type) {
861 			case OPT_0BOOL:
862 			case OPT_1BOOL:
863 			case OPT_NUM:
864 				if (O_VAL(sp, cnt) == O_D_VAL(sp, cnt))
865 					continue;
866 				break;
867 			case OPT_STR:
868 				if (O_STR(sp, cnt) == O_D_STR(sp, cnt) ||
869 				    (O_D_STR(sp, cnt) != NULL &&
870 				    !strcmp(O_STR(sp, cnt), O_D_STR(sp, cnt))))
871 					continue;
872 				break;
873 			}
874 			break;
875 		case SELECT_DISPLAY:		/* Display selected. */
876 			if (!F_ISSET(&sp->opts[cnt], OPT_SELECTED))
877 				continue;
878 			break;
879 		default:
880 		case NO_DISPLAY:
881 			abort();
882 		}
883 		F_CLR(&sp->opts[cnt], OPT_SELECTED);
884 
885 		curlen = STRLEN(op->name);
886 		switch (op->type) {
887 		case OPT_0BOOL:
888 		case OPT_1BOOL:
889 			if (!O_ISSET(sp, cnt))
890 				curlen += 2;
891 			break;
892 		case OPT_NUM:
893 			(void)snprintf(nbuf,
894 			    sizeof(nbuf), "%ld", O_VAL(sp, cnt));
895 			curlen += strlen(nbuf);
896 			break;
897 		case OPT_STR:
898 			if (O_STR(sp, cnt) != NULL)
899 				curlen += strlen(O_STR(sp, cnt));
900 			curlen += 3;
901 			break;
902 		}
903 		/* Offset by 2 so there's a gap. */
904 		if (curlen <= colwidth - 2)
905 			s_op[s_num++] = cnt;
906 		else
907 			b_op[b_num++] = cnt;
908 	}
909 
910 	if (s_num > 0) {
911 		/* Figure out the number of rows. */
912 		if (s_num > numcols) {
913 			numrows = s_num / numcols;
914 			if (s_num % numcols)
915 				++numrows;
916 		} else
917 			numrows = 1;
918 
919 		/* Display the options in sorted order. */
920 		for (row = 0; row < numrows;) {
921 			for (base = row, col = 0; col < numcols; ++col) {
922 				cnt = opts_print(sp, &optlist[s_op[base]]);
923 				if ((base += numrows) >= s_num)
924 					break;
925 				(void)ex_printf(sp, "%*s",
926 				    (int)(colwidth - cnt), "");
927 			}
928 			if (++row < numrows || b_num)
929 				(void)ex_puts(sp, "\n");
930 		}
931 	}
932 
933 	for (row = 0; row < b_num;) {
934 		(void)opts_print(sp, &optlist[b_op[row]]);
935 		if (++row < b_num)
936 			(void)ex_puts(sp, "\n");
937 	}
938 	(void)ex_puts(sp, "\n");
939 }
940 
941 /*
942  * opts_print --
943  *	Print out an option.
944  */
945 static int
opts_print(SCR * sp,OPTLIST const * op)946 opts_print(SCR *sp, OPTLIST const *op)
947 {
948 	int curlen, offset;
949 	const char *p;
950 
951 	curlen = 0;
952 	offset = op - optlist;
953 	switch (op->type) {
954 	case OPT_0BOOL:
955 	case OPT_1BOOL:
956 		curlen += ex_printf(sp,
957 		    "%s"WS, O_ISSET(sp, offset) ? "" : "no", op->name);
958 		break;
959 	case OPT_NUM:
960 		curlen += ex_printf(sp, WS"=%ld", op->name, O_VAL(sp, offset));
961 		break;
962 	case OPT_STR:
963 		curlen += ex_printf(sp, WS"=\"", op->name);
964 		p = O_STR(sp, offset);
965 		/* Keep correct count for unprintable character sequences */
966 		if (p != NULL)
967 			for (; *p != '\0'; ++p)
968 				curlen += ex_puts(sp, unctrl(*p));
969 		curlen += ex_puts(sp, "\"");
970 		break;
971 	}
972 	return (curlen);
973 }
974 
975 /*
976  * opts_save --
977  *	Write the current configuration to a file.
978  *
979  * PUBLIC: int opts_save(SCR *, FILE *);
980  */
981 int
opts_save(SCR * sp,FILE * fp)982 opts_save(SCR *sp, FILE *fp)
983 {
984 	OPTLIST const *op;
985 	CHAR_T ch, *p;
986 	char nch, *np;
987 	int cnt;
988 
989 	for (op = optlist; op->name != NULL; ++op) {
990 		if (F_ISSET(op, OPT_NOSAVE))
991 			continue;
992 		cnt = op - optlist;
993 		switch (op->type) {
994 		case OPT_0BOOL:
995 		case OPT_1BOOL:
996 			if (O_ISSET(sp, cnt))
997 				(void)fprintf(fp, "set "WS"\n", op->name);
998 			else
999 				(void)fprintf(fp, "set no"WS"\n", op->name);
1000 			break;
1001 		case OPT_NUM:
1002 			(void)fprintf(fp,
1003 			    "set "WS"=%-3ld\n", op->name, O_VAL(sp, cnt));
1004 			break;
1005 		case OPT_STR:
1006 			if (O_STR(sp, cnt) == NULL)
1007 				break;
1008 			(void)fprintf(fp, "set ");
1009 			for (p = op->name; (ch = *p) != '\0'; ++p) {
1010 				if (cmdskip(ch) || ch == '\\')
1011 					(void)putc('\\', fp);
1012 				fprintf(fp, WC, ch);
1013 			}
1014 			(void)putc('=', fp);
1015 			for (np = O_STR(sp, cnt); (nch = *np) != '\0'; ++np) {
1016 				if (cmdskip(nch) || nch == '\\')
1017 					(void)putc('\\', fp);
1018 				(void)putc(nch, fp);
1019 			}
1020 			(void)putc('\n', fp);
1021 			break;
1022 		}
1023 		if (ferror(fp)) {
1024 			msgq(sp, M_SYSERR, NULL);
1025 			return (1);
1026 		}
1027 	}
1028 	return (0);
1029 }
1030 
1031 /*
1032  * opts_search --
1033  *	Search for an option.
1034  *
1035  * PUBLIC: OPTLIST const *opts_search(CHAR_T *);
1036  */
1037 OPTLIST const *
opts_search(CHAR_T * name)1038 opts_search(CHAR_T *name)
1039 {
1040 	OPTLIST const *op, *found;
1041 	OABBREV atmp, *ap;
1042 	OPTLIST otmp;
1043 	size_t len;
1044 
1045 	/* Check list of abbreviations. */
1046 	atmp.name = name;
1047 	if ((ap = bsearch(&atmp, abbrev, sizeof(abbrev) / sizeof(OABBREV) - 1,
1048 	    sizeof(OABBREV), opts_abbcmp)) != NULL)
1049 		return (optlist + ap->offset);
1050 
1051 	/* Check list of options. */
1052 	otmp.name = name;
1053 	if ((op = bsearch(&otmp, optlist, sizeof(optlist) / sizeof(OPTLIST) - 1,
1054 	    sizeof(OPTLIST), opts_cmp)) != NULL)
1055 		return (op);
1056 
1057 	/*
1058 	 * Check to see if the name is the prefix of one (and only one)
1059 	 * option.  If so, return the option.
1060 	 */
1061 	len = STRLEN(name);
1062 	for (found = NULL, op = optlist; op->name != NULL; ++op) {
1063 		if (op->name[0] < name[0])
1064 			continue;
1065 		if (op->name[0] > name[0])
1066 			break;
1067 		if (!MEMCMP(op->name, name, len)) {
1068 			if (found != NULL)
1069 				return (NULL);
1070 			found = op;
1071 		}
1072 	}
1073 	return (found);
1074 }
1075 
1076 /*
1077  * opts_nomatch --
1078  *	Standard nomatch error message for options.
1079  *
1080  * PUBLIC: void opts_nomatch(SCR *, CHAR_T *);
1081  */
1082 void
opts_nomatch(SCR * sp,CHAR_T * name)1083 opts_nomatch(SCR *sp, CHAR_T *name)
1084 {
1085 	msgq_wstr(sp, M_ERR, name,
1086 	    "033|set: no %s option: 'set all' gives all option values");
1087 }
1088 
1089 static int
opts_abbcmp(const void * a,const void * b)1090 opts_abbcmp(const void *a, const void *b)
1091 {
1092 	return(STRCMP(((OABBREV *)a)->name, ((OABBREV *)b)->name));
1093 }
1094 
1095 static int
opts_cmp(const void * a,const void * b)1096 opts_cmp(const void *a, const void *b)
1097 {
1098 	return(STRCMP(((OPTLIST *)a)->name, ((OPTLIST *)b)->name));
1099 }
1100 
1101 /*
1102  * opts_copy --
1103  *	Copy a screen's OPTION array.
1104  *
1105  * PUBLIC: int opts_copy(SCR *, SCR *);
1106  */
1107 int
opts_copy(SCR * orig,SCR * sp)1108 opts_copy(SCR *orig, SCR *sp)
1109 {
1110 	int cnt, rval;
1111 
1112 	/* Copy most everything without change. */
1113 	memcpy(sp->opts, orig->opts, sizeof(orig->opts));
1114 
1115 	/* Copy the string edit options. */
1116 	for (cnt = rval = 0; cnt < O_OPTIONCOUNT; ++cnt) {
1117 		if (optlist[cnt].type != OPT_STR ||
1118 		    F_ISSET(&sp->opts[cnt], OPT_GLOBAL))
1119 			continue;
1120 		/*
1121 		 * If never set, or already failed, NULL out the entries --
1122 		 * have to continue after failure, otherwise would have two
1123 		 * screens referencing the same memory.
1124 		 */
1125 		if (rval || O_STR(sp, cnt) == NULL) {
1126 			o_set(sp, cnt, OS_NOFREE | OS_STR, NULL, 0);
1127 			o_set(sp, cnt, OS_DEF | OS_NOFREE | OS_STR, NULL, 0);
1128 			continue;
1129 		}
1130 
1131 		/* Copy the current string. */
1132 		if (o_set(sp, cnt, OS_NOFREE | OS_STRDUP, O_STR(sp, cnt), 0)) {
1133 			o_set(sp, cnt, OS_DEF | OS_NOFREE | OS_STR, NULL, 0);
1134 			goto nomem;
1135 		}
1136 
1137 		/* Copy the default string. */
1138 		if (O_D_STR(sp, cnt) != NULL && o_set(sp, cnt,
1139 		    OS_DEF | OS_NOFREE | OS_STRDUP, O_D_STR(sp, cnt), 0)) {
1140 nomem:			msgq(orig, M_SYSERR, NULL);
1141 			rval = 1;
1142 		}
1143 	}
1144 	return (rval);
1145 }
1146 
1147 /*
1148  * opts_free --
1149  *	Free all option strings
1150  *
1151  * PUBLIC: void opts_free(SCR *);
1152  */
1153 void
opts_free(SCR * sp)1154 opts_free(SCR *sp)
1155 {
1156 	int cnt;
1157 
1158 	for (cnt = 0; cnt < O_OPTIONCOUNT; ++cnt) {
1159 		if (optlist[cnt].type != OPT_STR ||
1160 		    F_ISSET(&sp->opts[cnt], OPT_GLOBAL))
1161 			continue;
1162 		free(O_STR(sp, cnt));
1163 		free(O_D_STR(sp, cnt));
1164 	}
1165 }
1166