xref: /freebsd/usr.bin/locale/locale.c (revision 2f513db72b034fd5ef7f080b11be5c711c15186a)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2002, 2003 Alexey Zelkin <phantom@FreeBSD.org>
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  *
28  * $FreeBSD$
29  */
30 
31 /*
32  * XXX: implement missing era_* (LC_TIME) keywords (require libc &
33  *	nl_langinfo(3) extensions)
34  *
35  * XXX: correctly handle reserved 'charmap' keyword and '-m' option (require
36  *	localedef(1) implementation).  Currently it's handled via
37  *	nl_langinfo(CODESET).
38  */
39 
40 #include <sys/param.h>
41 #include <sys/types.h>
42 #include <sys/sbuf.h>
43 
44 #include <dirent.h>
45 #include <err.h>
46 #include <limits.h>
47 #include <locale.h>
48 #include <langinfo.h>
49 #include <stdio.h>
50 #include <stdlib.h>
51 #include <string.h>
52 #include <stringlist.h>
53 #include <unistd.h>
54 #include "setlocale.h"
55 
56 /* Local prototypes */
57 char	*format_grouping(char *);
58 void	init_locales_list(void);
59 void	list_charmaps(void);
60 void	list_locales(void);
61 const char *lookup_localecat(int);
62 char	*kwval_lconv(int);
63 int	kwval_lookup(const char *, char **, int *, int *, int *);
64 void	showdetails(const char *);
65 void	showkeywordslist(char *substring);
66 void	showlocale(void);
67 void	usage(void);
68 
69 /* Global variables */
70 static StringList *locales = NULL;
71 
72 static int	all_locales = 0;
73 static int	all_charmaps = 0;
74 static int	prt_categories = 0;
75 static int	prt_keywords = 0;
76 
77 static const struct _lcinfo {
78 	const char	*name;
79 	int		id;
80 } lcinfo [] = {
81 	{ "LC_CTYPE",		LC_CTYPE },
82 	{ "LC_COLLATE",		LC_COLLATE },
83 	{ "LC_TIME",		LC_TIME },
84 	{ "LC_NUMERIC",		LC_NUMERIC },
85 	{ "LC_MONETARY",	LC_MONETARY },
86 	{ "LC_MESSAGES",	LC_MESSAGES }
87 };
88 #define	NLCINFO nitems(lcinfo)
89 
90 /* ids for values not referenced by nl_langinfo() */
91 enum {
92 	KW_GROUPING,
93 	KW_INT_CURR_SYMBOL,
94 	KW_CURRENCY_SYMBOL,
95 	KW_MON_DECIMAL_POINT,
96 	KW_MON_THOUSANDS_SEP,
97 	KW_MON_GROUPING,
98 	KW_POSITIVE_SIGN,
99 	KW_NEGATIVE_SIGN,
100 	KW_INT_FRAC_DIGITS,
101 	KW_FRAC_DIGITS,
102 	KW_P_CS_PRECEDES,
103 	KW_P_SEP_BY_SPACE,
104 	KW_N_CS_PRECEDES,
105 	KW_N_SEP_BY_SPACE,
106 	KW_P_SIGN_POSN,
107 	KW_N_SIGN_POSN,
108 	KW_INT_P_CS_PRECEDES,
109 	KW_INT_P_SEP_BY_SPACE,
110 	KW_INT_N_CS_PRECEDES,
111 	KW_INT_N_SEP_BY_SPACE,
112 	KW_INT_P_SIGN_POSN,
113 	KW_INT_N_SIGN_POSN,
114 	KW_TIME_DAY,
115 	KW_TIME_ABDAY,
116 	KW_TIME_MON,
117 	KW_TIME_ABMON,
118 	KW_TIME_AM_PM
119 };
120 
121 enum {
122 	TYPE_NUM,
123 	TYPE_STR,
124 	TYPE_UNQ
125 };
126 
127 enum {
128 	SRC_LINFO,
129 	SRC_LCONV,
130 	SRC_LTIME
131 };
132 
133 static const struct _kwinfo {
134 	const char	*name;
135 	int		type;
136 	int		catid;		/* LC_* */
137 	int		source;
138 	int		value_ref;
139 	const char	*comment;
140 } kwinfo [] = {
141 	{ "charmap",		TYPE_STR, LC_CTYPE,	SRC_LINFO,
142 	  CODESET, "" },					/* hack */
143 
144 	/* LC_MONETARY - POSIX */
145 	{ "int_curr_symbol",	TYPE_STR, LC_MONETARY,	SRC_LCONV,
146 	  KW_INT_CURR_SYMBOL, "" },
147 	{ "currency_symbol",	TYPE_STR, LC_MONETARY,	SRC_LCONV,
148 	  KW_CURRENCY_SYMBOL, "" },
149 	{ "mon_decimal_point",	TYPE_STR, LC_MONETARY,	SRC_LCONV,
150 	  KW_MON_DECIMAL_POINT, "" },
151 	{ "mon_thousands_sep",	TYPE_STR, LC_MONETARY,	SRC_LCONV,
152 	  KW_MON_THOUSANDS_SEP, "" },
153 	{ "mon_grouping",	TYPE_UNQ, LC_MONETARY,	SRC_LCONV,
154 	  KW_MON_GROUPING, "" },
155 	{ "positive_sign",	TYPE_STR, LC_MONETARY,	SRC_LCONV,
156 	  KW_POSITIVE_SIGN, "" },
157 	{ "negative_sign",	TYPE_STR, LC_MONETARY,	SRC_LCONV,
158 	  KW_NEGATIVE_SIGN, "" },
159 	{ "int_frac_digits",	TYPE_NUM, LC_MONETARY,	SRC_LCONV,
160 	  KW_INT_FRAC_DIGITS, "" },
161 	{ "frac_digits",	TYPE_NUM, LC_MONETARY,	SRC_LCONV,
162 	  KW_FRAC_DIGITS, "" },
163 	{ "p_cs_precedes",	TYPE_NUM, LC_MONETARY,	SRC_LCONV,
164 	  KW_P_CS_PRECEDES, "" },
165 	{ "p_sep_by_space",	TYPE_NUM, LC_MONETARY,	SRC_LCONV,
166 	  KW_P_SEP_BY_SPACE, "" },
167 	{ "n_cs_precedes",	TYPE_NUM, LC_MONETARY,	SRC_LCONV,
168 	  KW_N_CS_PRECEDES, "" },
169 	{ "n_sep_by_space",	TYPE_NUM, LC_MONETARY,	SRC_LCONV,
170 	  KW_N_SEP_BY_SPACE, "" },
171 	{ "p_sign_posn",	TYPE_NUM, LC_MONETARY,	SRC_LCONV,
172 	  KW_P_SIGN_POSN, "" },
173 	{ "n_sign_posn",	TYPE_NUM, LC_MONETARY,	SRC_LCONV,
174 	  KW_N_SIGN_POSN, "" },
175 	{ "int_p_cs_precedes",	TYPE_NUM, LC_MONETARY,	SRC_LCONV,
176 	  KW_INT_P_CS_PRECEDES, "" },
177 	{ "int_p_sep_by_space",	TYPE_NUM, LC_MONETARY,	SRC_LCONV,
178 	  KW_INT_P_SEP_BY_SPACE, "" },
179 	{ "int_n_cs_precedes",	TYPE_NUM, LC_MONETARY,	SRC_LCONV,
180 	  KW_INT_N_CS_PRECEDES, "" },
181 	{ "int_n_sep_by_space",	TYPE_NUM, LC_MONETARY,	SRC_LCONV,
182 	  KW_INT_N_SEP_BY_SPACE, "" },
183 	{ "int_p_sign_posn",	TYPE_NUM, LC_MONETARY,	SRC_LCONV,
184 	  KW_INT_P_SIGN_POSN, "" },
185 	{ "int_n_sign_posn",	TYPE_NUM, LC_MONETARY,	SRC_LCONV,
186 	  KW_INT_N_SIGN_POSN, "" },
187 
188 	/* LC_NUMERIC - POSIX */
189 	{ "decimal_point",	TYPE_STR, LC_NUMERIC,	SRC_LINFO,
190 	  RADIXCHAR, "" },
191 	{ "thousands_sep",	TYPE_STR, LC_NUMERIC,	SRC_LINFO,
192 	  THOUSEP, "" },
193 	{ "grouping",		TYPE_UNQ, LC_NUMERIC,	SRC_LCONV,
194 	  KW_GROUPING, "" },
195 	/* LC_NUMERIC - local additions */
196 	{ "radixchar",		TYPE_STR, LC_NUMERIC,	SRC_LINFO,
197 	  RADIXCHAR, "Same as decimal_point (FreeBSD only)" },	/* compat */
198 	{ "thousep",		TYPE_STR, LC_NUMERIC,	SRC_LINFO,
199 	  THOUSEP, "Same as thousands_sep (FreeBSD only)" },	/* compat */
200 
201 	/* LC_TIME - POSIX */
202 	{ "abday",		TYPE_STR, LC_TIME,	SRC_LTIME,
203 	  KW_TIME_ABDAY, "" },
204 	{ "day",		TYPE_STR, LC_TIME,	SRC_LTIME,
205 	  KW_TIME_DAY, "" },
206 	{ "abmon",		TYPE_STR, LC_TIME,	SRC_LTIME,
207 	  KW_TIME_ABMON, "" },
208 	{ "mon",		TYPE_STR, LC_TIME,	SRC_LTIME,
209 	  KW_TIME_MON, "" },
210 	{ "d_t_fmt",		TYPE_STR, LC_TIME,	SRC_LINFO,
211 	  D_T_FMT, "" },
212 	{ "d_fmt",		TYPE_STR, LC_TIME,	SRC_LINFO,
213 	  D_FMT, "" },
214 	{ "t_fmt",		TYPE_STR, LC_TIME,	SRC_LINFO,
215 	  T_FMT, "" },
216 	{ "am_pm",		TYPE_STR, LC_TIME,	SRC_LTIME,
217 	  KW_TIME_AM_PM, "" },
218 	{ "t_fmt_ampm",		TYPE_STR, LC_TIME,	SRC_LINFO,
219 	  T_FMT_AMPM, "" },
220 	{ "era",		TYPE_UNQ, LC_TIME,	SRC_LINFO,
221 	  ERA, "(unavailable)" },
222 	{ "era_d_fmt",		TYPE_STR, LC_TIME,	SRC_LINFO,
223 	  ERA_D_FMT, "(unavailable)" },
224 	{ "era_d_t_fmt",	TYPE_STR, LC_TIME,	SRC_LINFO,
225 	  ERA_D_T_FMT, "(unavailable)" },
226 	{ "era_t_fmt",		TYPE_STR, LC_TIME,	SRC_LINFO,
227 	  ERA_T_FMT, "(unavailable)" },
228 	{ "alt_digits",		TYPE_UNQ, LC_TIME,	SRC_LINFO,
229 	  ALT_DIGITS, "" },
230 	/* LC_TIME - local additions */
231 	{ "abday_1",		TYPE_STR, LC_TIME,	SRC_LINFO,
232 	  ABDAY_1, "(FreeBSD only)" },
233 	{ "abday_2",		TYPE_STR, LC_TIME,	SRC_LINFO,
234 	  ABDAY_2, "(FreeBSD only)" },
235 	{ "abday_3",		TYPE_STR, LC_TIME,	SRC_LINFO,
236 	  ABDAY_3, "(FreeBSD only)" },
237 	{ "abday_4",		TYPE_STR, LC_TIME,	SRC_LINFO,
238 	  ABDAY_4, "(FreeBSD only)" },
239 	{ "abday_5",		TYPE_STR, LC_TIME,	SRC_LINFO,
240 	  ABDAY_5, "(FreeBSD only)" },
241 	{ "abday_6",		TYPE_STR, LC_TIME,	SRC_LINFO,
242 	  ABDAY_6, "(FreeBSD only)" },
243 	{ "abday_7",		TYPE_STR, LC_TIME,	SRC_LINFO,
244 	  ABDAY_7, "(FreeBSD only)" },
245 	{ "day_1",		TYPE_STR, LC_TIME,	SRC_LINFO,
246 	  DAY_1, "(FreeBSD only)" },
247 	{ "day_2",		TYPE_STR, LC_TIME,	SRC_LINFO,
248 	  DAY_2, "(FreeBSD only)" },
249 	{ "day_3",		TYPE_STR, LC_TIME,	SRC_LINFO,
250 	  DAY_3, "(FreeBSD only)" },
251 	{ "day_4",		TYPE_STR, LC_TIME,	SRC_LINFO,
252 	  DAY_4, "(FreeBSD only)" },
253 	{ "day_5",		TYPE_STR, LC_TIME,	SRC_LINFO,
254 	  DAY_5, "(FreeBSD only)" },
255 	{ "day_6",		TYPE_STR, LC_TIME,	SRC_LINFO,
256 	  DAY_6, "(FreeBSD only)" },
257 	{ "day_7",		TYPE_STR, LC_TIME,	SRC_LINFO,
258 	  DAY_7, "(FreeBSD only)" },
259 	{ "abmon_1",		TYPE_STR, LC_TIME,	SRC_LINFO,
260 	  ABMON_1, "(FreeBSD only)" },
261 	{ "abmon_2",		TYPE_STR, LC_TIME,	SRC_LINFO,
262 	  ABMON_2, "(FreeBSD only)" },
263 	{ "abmon_3",		TYPE_STR, LC_TIME,	SRC_LINFO,
264 	  ABMON_3, "(FreeBSD only)" },
265 	{ "abmon_4",		TYPE_STR, LC_TIME,	SRC_LINFO,
266 	  ABMON_4, "(FreeBSD only)" },
267 	{ "abmon_5",		TYPE_STR, LC_TIME,	SRC_LINFO,
268 	  ABMON_5, "(FreeBSD only)" },
269 	{ "abmon_6",		TYPE_STR, LC_TIME,	SRC_LINFO,
270 	  ABMON_6, "(FreeBSD only)" },
271 	{ "abmon_7",		TYPE_STR, LC_TIME,	SRC_LINFO,
272 	  ABMON_7, "(FreeBSD only)" },
273 	{ "abmon_8",		TYPE_STR, LC_TIME,	SRC_LINFO,
274 	  ABMON_8, "(FreeBSD only)" },
275 	{ "abmon_9",		TYPE_STR, LC_TIME,	SRC_LINFO,
276 	  ABMON_9, "(FreeBSD only)" },
277 	{ "abmon_10",		TYPE_STR, LC_TIME,	SRC_LINFO,
278 	  ABMON_10, "(FreeBSD only)" },
279 	{ "abmon_11",		TYPE_STR, LC_TIME,	SRC_LINFO,
280 	  ABMON_11, "(FreeBSD only)" },
281 	{ "abmon_12",		TYPE_STR, LC_TIME,	SRC_LINFO,
282 	  ABMON_12, "(FreeBSD only)" },
283 	{ "mon_1",		TYPE_STR, LC_TIME,	SRC_LINFO,
284 	  MON_1, "(FreeBSD only)" },
285 	{ "mon_2",		TYPE_STR, LC_TIME,	SRC_LINFO,
286 	  MON_2, "(FreeBSD only)" },
287 	{ "mon_3",		TYPE_STR, LC_TIME,	SRC_LINFO,
288 	  MON_3, "(FreeBSD only)" },
289 	{ "mon_4",		TYPE_STR, LC_TIME,	SRC_LINFO,
290 	  MON_4, "(FreeBSD only)" },
291 	{ "mon_5",		TYPE_STR, LC_TIME,	SRC_LINFO,
292 	  MON_5, "(FreeBSD only)" },
293 	{ "mon_6",		TYPE_STR, LC_TIME,	SRC_LINFO,
294 	  MON_6, "(FreeBSD only)" },
295 	{ "mon_7",		TYPE_STR, LC_TIME,	SRC_LINFO,
296 	  MON_7, "(FreeBSD only)" },
297 	{ "mon_8",		TYPE_STR, LC_TIME,	SRC_LINFO,
298 	  MON_8, "(FreeBSD only)" },
299 	{ "mon_9",		TYPE_STR, LC_TIME,	SRC_LINFO,
300 	  MON_9, "(FreeBSD only)" },
301 	{ "mon_10",		TYPE_STR, LC_TIME,	SRC_LINFO,
302 	  MON_10, "(FreeBSD only)" },
303 	{ "mon_11",		TYPE_STR, LC_TIME,	SRC_LINFO,
304 	  MON_11, "(FreeBSD only)" },
305 	{ "mon_12",		TYPE_STR, LC_TIME,	SRC_LINFO,
306 	  MON_12, "(FreeBSD only)" },
307 	{ "altmon_1",		TYPE_STR, LC_TIME,	SRC_LINFO,
308 	  ALTMON_1, "(FreeBSD only)" },
309 	{ "altmon_2",		TYPE_STR, LC_TIME,	SRC_LINFO,
310 	  ALTMON_2, "(FreeBSD only)" },
311 	{ "altmon_3",		TYPE_STR, LC_TIME,	SRC_LINFO,
312 	  ALTMON_3, "(FreeBSD only)" },
313 	{ "altmon_4",		TYPE_STR, LC_TIME,	SRC_LINFO,
314 	  ALTMON_4, "(FreeBSD only)" },
315 	{ "altmon_5",		TYPE_STR, LC_TIME,	SRC_LINFO,
316 	  ALTMON_5, "(FreeBSD only)" },
317 	{ "altmon_6",		TYPE_STR, LC_TIME,	SRC_LINFO,
318 	  ALTMON_6, "(FreeBSD only)" },
319 	{ "altmon_7",		TYPE_STR, LC_TIME,	SRC_LINFO,
320 	  ALTMON_7, "(FreeBSD only)" },
321 	{ "altmon_8",		TYPE_STR, LC_TIME,	SRC_LINFO,
322 	  ALTMON_8, "(FreeBSD only)" },
323 	{ "altmon_9",		TYPE_STR, LC_TIME,	SRC_LINFO,
324 	  ALTMON_9, "(FreeBSD only)" },
325 	{ "altmon_10",		TYPE_STR, LC_TIME,	SRC_LINFO,
326 	  ALTMON_10, "(FreeBSD only)" },
327 	{ "altmon_11",		TYPE_STR, LC_TIME,	SRC_LINFO,
328 	  ALTMON_11, "(FreeBSD only)" },
329 	{ "altmon_12",		TYPE_STR, LC_TIME,	SRC_LINFO,
330 	  ALTMON_12, "(FreeBSD only)" },
331 	{ "am_str",		TYPE_STR, LC_TIME,	SRC_LINFO,
332 	  AM_STR, "(FreeBSD only)" },
333 	{ "pm_str",		TYPE_STR, LC_TIME,	SRC_LINFO,
334 	  PM_STR, "(FreeBSD only)" },
335 	{ "d_md_order",		TYPE_STR, LC_TIME,	SRC_LINFO,
336 	  D_MD_ORDER, "(FreeBSD only)" },			/* local */
337 
338 	/* LC_MESSAGES - POSIX */
339 	{ "yesexpr",		TYPE_STR, LC_MESSAGES, SRC_LINFO,
340 	  YESEXPR, "" },
341 	{ "noexpr",		TYPE_STR, LC_MESSAGES, SRC_LINFO,
342 	  NOEXPR, "" },
343 	/* LC_MESSAGES - local additions */
344 	{ "yesstr",		TYPE_STR, LC_MESSAGES, SRC_LINFO,
345 	  YESSTR, "(POSIX legacy)" },				/* compat */
346 	{ "nostr",		TYPE_STR, LC_MESSAGES, SRC_LINFO,
347 	  NOSTR, "(POSIX legacy)" }				/* compat */
348 
349 };
350 #define	NKWINFO (nitems(kwinfo))
351 
352 static const char *boguslocales[] = { "UTF-8" };
353 #define	NBOGUS	(nitems(boguslocales))
354 
355 int
356 main(int argc, char *argv[])
357 {
358 	int	ch;
359 	int	tmp;
360 
361 	while ((ch = getopt(argc, argv, "ackms:")) != -1) {
362 		switch (ch) {
363 		case 'a':
364 			all_locales = 1;
365 			break;
366 		case 'c':
367 			prt_categories = 1;
368 			break;
369 		case 'k':
370 			prt_keywords = 1;
371 			break;
372 		case 'm':
373 			all_charmaps = 1;
374 			break;
375 		default:
376 			usage();
377 		}
378 	}
379 	argc -= optind;
380 	argv += optind;
381 
382 	/* validate arguments */
383 	if (all_locales && all_charmaps)
384 		usage();
385 	if ((all_locales || all_charmaps) && argc > 0)
386 		usage();
387 	if ((all_locales || all_charmaps) && (prt_categories || prt_keywords))
388 		usage();
389 
390 	/* process '-a' */
391 	if (all_locales) {
392 		list_locales();
393 		exit(0);
394 	}
395 
396 	/* process '-m' */
397 	if (all_charmaps) {
398 		list_charmaps();
399 		exit(0);
400 	}
401 
402 	/* check for special case '-k list' */
403 	tmp = 0;
404 	if (prt_keywords && argc > 0)
405 		while (tmp < argc)
406 			if (strcasecmp(argv[tmp++], "list") == 0) {
407 				showkeywordslist(argv[tmp]);
408 				exit(0);
409 			}
410 
411 	/* process '-c', '-k', or command line arguments. */
412 	if (prt_categories || prt_keywords || argc > 0) {
413 		if (prt_keywords || argc > 0)
414 			setlocale(LC_ALL, "");
415 		if (argc > 0) {
416 			while (argc > 0) {
417 				showdetails(*argv);
418 				argv++;
419 				argc--;
420 			}
421 		} else {
422 			uint i;
423 			for (i = 0; i < nitems(kwinfo); i++)
424 				showdetails(kwinfo[i].name);
425 		}
426 		exit(0);
427 	}
428 
429 	/* no arguments, show current locale state */
430 	showlocale();
431 
432 	return (0);
433 }
434 
435 void
436 usage(void)
437 {
438 	printf("Usage: locale [ -a | -m ]\n"
439 	       "       locale -k list [prefix]\n"
440 	       "       locale [ -ck ] [keyword ...]\n");
441 	exit(1);
442 }
443 
444 /*
445  * Output information about all available locales
446  *
447  * XXX actually output of this function does not guarantee that locale
448  *     is really available to application, since it can be broken or
449  *     inconsistent thus setlocale() will fail.  Maybe add '-V' function to
450  *     also validate these locales?
451  */
452 void
453 list_locales(void)
454 {
455 	size_t i;
456 
457 	init_locales_list();
458 	for (i = 0; i < locales->sl_cur; i++) {
459 		printf("%s\n", locales->sl_str[i]);
460 	}
461 }
462 
463 /*
464  * qsort() helper function
465  */
466 static int
467 scmp(const void *s1, const void *s2)
468 {
469 	return strcmp(*(const char * const *)s1, *(const char * const *)s2);
470 }
471 
472 /*
473  * Output information about all available charmaps
474  *
475  * XXX this function is doing a task in hackish way, i.e. by scaning
476  *     list of locales, spliting their codeset part and building list of
477  *     them.
478  */
479 void
480 list_charmaps(void)
481 {
482 	size_t i;
483 	char *s, *cs;
484 	StringList *charmaps;
485 
486 	/* initialize StringList */
487 	charmaps = sl_init();
488 	if (charmaps == NULL)
489 		err(1, "could not allocate memory");
490 
491 	/* fetch locales list */
492 	init_locales_list();
493 
494 	/* split codesets and build their list */
495 	for (i = 0; i < locales->sl_cur; i++) {
496 		s = locales->sl_str[i];
497 		if ((cs = strchr(s, '.')) != NULL) {
498 			cs++;
499 			if (sl_find(charmaps, cs) == NULL)
500 				sl_add(charmaps, cs);
501 		}
502 	}
503 
504 	/* add US-ASCII, if not yet added */
505 	if (sl_find(charmaps, "US-ASCII") == NULL)
506 		sl_add(charmaps, strdup("US-ASCII"));
507 
508 	/* sort the list */
509 	qsort(charmaps->sl_str, charmaps->sl_cur, sizeof(char *), scmp);
510 
511 	/* print results */
512 	for (i = 0; i < charmaps->sl_cur; i++) {
513 		printf("%s\n", charmaps->sl_str[i]);
514 	}
515 }
516 
517 /*
518  * Retrieve sorted list of system locales (or user locales, if PATH_LOCALE
519  * environment variable is set)
520  */
521 void
522 init_locales_list(void)
523 {
524 	DIR *dirp;
525 	struct dirent *dp;
526 	size_t i;
527 	int bogus;
528 
529 	/* why call this function twice ? */
530 	if (locales != NULL)
531 		return;
532 
533 	/* initialize StringList */
534 	locales = sl_init();
535 	if (locales == NULL)
536 		err(1, "could not allocate memory");
537 
538 	/* get actual locales directory name */
539 	if (__detect_path_locale() != 0)
540 		err(1, "unable to find locales storage");
541 
542 	/* open locales directory */
543 	dirp = opendir(_PathLocale);
544 	if (dirp == NULL)
545 		err(1, "could not open directory '%s'", _PathLocale);
546 
547 	/* scan directory and store its contents except "." and ".." */
548 	while ((dp = readdir(dirp)) != NULL) {
549 		if (*(dp->d_name) == '.')
550 			continue;		/* exclude "." and ".." */
551 		for (bogus = i = 0; i < NBOGUS; i++)
552 			if (strncmp(dp->d_name, boguslocales[i],
553 			    strlen(boguslocales[i])) == 0)
554 				bogus = 1;
555 		if (!bogus)
556 			sl_add(locales, strdup(dp->d_name));
557 	}
558 	closedir(dirp);
559 
560 	/* make sure that 'POSIX' and 'C' locales are present in the list.
561 	 * POSIX 1003.1-2001 requires presence of 'POSIX' name only here, but
562 	 * we also list 'C' for constistency
563 	 */
564 	if (sl_find(locales, "POSIX") == NULL)
565 		sl_add(locales, strdup("POSIX"));
566 
567 	if (sl_find(locales, "C") == NULL)
568 		sl_add(locales, strdup("C"));
569 
570 	/* make output nicer, sort the list */
571 	qsort(locales->sl_str, locales->sl_cur, sizeof(char *), scmp);
572 }
573 
574 /*
575  * Show current locale status, depending on environment variables
576  */
577 void
578 showlocale(void)
579 {
580 	size_t	i;
581 	const char *lang, *vval, *eval;
582 
583 	setlocale(LC_ALL, "");
584 
585 	lang = getenv("LANG");
586 	if (lang == NULL) {
587 		lang = "";
588 	}
589 	printf("LANG=%s\n", lang);
590 	/* XXX: if LANG is null, then set it to "C" to get implied values? */
591 
592 	for (i = 0; i < NLCINFO; i++) {
593 		vval = setlocale(lcinfo[i].id, NULL);
594 		eval = getenv(lcinfo[i].name);
595 		if (eval != NULL && !strcmp(eval, vval)
596 				&& strcmp(lang, vval)) {
597 			/*
598 			 * Appropriate environment variable set, its value
599 			 * is valid and not overridden by LC_ALL
600 			 *
601 			 * XXX: possible side effect: if both LANG and
602 			 * overridden environment variable are set into same
603 			 * value, then it'll be assumed as 'implied'
604 			 */
605 			printf("%s=%s\n", lcinfo[i].name, vval);
606 		} else {
607 			printf("%s=\"%s\"\n", lcinfo[i].name, vval);
608 		}
609 	}
610 
611 	vval = getenv("LC_ALL");
612 	if (vval == NULL) {
613 		vval = "";
614 	}
615 	printf("LC_ALL=%s\n", vval);
616 }
617 
618 char *
619 format_grouping(char *binary)
620 {
621 	static char rval[64];
622 	const char *cp;
623 	size_t roff;
624 	int len;
625 
626 	/*
627 	 * XXX This check will need to be modified if/when localeconv() is
628 	 * fixed (PR172215).
629 	 */
630 	if (*binary == CHAR_MAX)
631 		return (binary);
632 
633 	rval[0] = '\0';
634 	roff = 0;
635 	for (cp = binary; *cp != '\0'; ++cp) {
636 #if CHAR_MIN != 0
637 		if (*cp < 0)
638 			break;		/* garbage input */
639 #endif
640 		len = snprintf(&rval[roff], sizeof(rval) - roff, "%u;", *cp);
641 		if (len < 0 || (unsigned)len >= sizeof(rval) - roff)
642 			break;		/* insufficient space for output */
643 		roff += len;
644 		if (*cp == CHAR_MAX)
645 			break;		/* special termination */
646 	}
647 
648 	/* Truncate at the last successfully snprintf()ed semicolon. */
649 	if (roff != 0)
650 		rval[roff - 1] = '\0';
651 
652 	return (&rval[0]);
653 }
654 
655 /*
656  * keyword value lookup helper for values accessible via localeconv()
657  */
658 char *
659 kwval_lconv(int id)
660 {
661 	struct lconv *lc;
662 	char *rval;
663 
664 	rval = NULL;
665 	lc = localeconv();
666 	switch (id) {
667 		case KW_GROUPING:
668 			rval = format_grouping(lc->grouping);
669 			break;
670 		case KW_INT_CURR_SYMBOL:
671 			rval = lc->int_curr_symbol;
672 			break;
673 		case KW_CURRENCY_SYMBOL:
674 			rval = lc->currency_symbol;
675 			break;
676 		case KW_MON_DECIMAL_POINT:
677 			rval = lc->mon_decimal_point;
678 			break;
679 		case KW_MON_THOUSANDS_SEP:
680 			rval = lc->mon_thousands_sep;
681 			break;
682 		case KW_MON_GROUPING:
683 			rval = format_grouping(lc->mon_grouping);
684 			break;
685 		case KW_POSITIVE_SIGN:
686 			rval = lc->positive_sign;
687 			break;
688 		case KW_NEGATIVE_SIGN:
689 			rval = lc->negative_sign;
690 			break;
691 		case KW_INT_FRAC_DIGITS:
692 			rval = &(lc->int_frac_digits);
693 			break;
694 		case KW_FRAC_DIGITS:
695 			rval = &(lc->frac_digits);
696 			break;
697 		case KW_P_CS_PRECEDES:
698 			rval = &(lc->p_cs_precedes);
699 			break;
700 		case KW_P_SEP_BY_SPACE:
701 			rval = &(lc->p_sep_by_space);
702 			break;
703 		case KW_N_CS_PRECEDES:
704 			rval = &(lc->n_cs_precedes);
705 			break;
706 		case KW_N_SEP_BY_SPACE:
707 			rval = &(lc->n_sep_by_space);
708 			break;
709 		case KW_P_SIGN_POSN:
710 			rval = &(lc->p_sign_posn);
711 			break;
712 		case KW_N_SIGN_POSN:
713 			rval = &(lc->n_sign_posn);
714 			break;
715 		case KW_INT_P_CS_PRECEDES:
716 			rval = &(lc->int_p_cs_precedes);
717 			break;
718 		case KW_INT_P_SEP_BY_SPACE:
719 			rval = &(lc->int_p_sep_by_space);
720 			break;
721 		case KW_INT_N_CS_PRECEDES:
722 			rval = &(lc->int_n_cs_precedes);
723 			break;
724 		case KW_INT_N_SEP_BY_SPACE:
725 			rval = &(lc->int_n_sep_by_space);
726 			break;
727 		case KW_INT_P_SIGN_POSN:
728 			rval = &(lc->int_p_sign_posn);
729 			break;
730 		case KW_INT_N_SIGN_POSN:
731 			rval = &(lc->int_n_sign_posn);
732 			break;
733 		default:
734 			break;
735 	}
736 	return (rval);
737 }
738 
739 /*
740  * keyword value lookup helper for LC_TIME keywords not accessible
741  * via nl_langinfo() or localeconv()
742  */
743 static char *
744 kwval_ltime(int id)
745 {
746 	char *rval;
747 	struct sbuf *kwsbuf;
748 	nl_item i, s_item = 0, e_item = 0;
749 
750 	switch (id) {
751 	case KW_TIME_DAY:
752 		s_item = DAY_1;
753 		e_item = DAY_7;
754 		break;
755 	case KW_TIME_ABDAY:
756 		s_item = ABDAY_1;
757 		e_item = ABDAY_7;
758 		break;
759 	case KW_TIME_MON:
760 		s_item = MON_1;
761 		e_item = MON_12;
762 		break;
763 	case KW_TIME_ABMON:
764 		s_item = ABMON_1;
765 		e_item = ABMON_12;
766 		break;
767 	case KW_TIME_AM_PM:
768 		if (asprintf(&rval, "%s;%s",
769 		    nl_langinfo(AM_STR),
770 		    nl_langinfo(PM_STR)) == -1)
771 			err(1, "asprintf");
772 		return (rval);
773 	}
774 
775 	kwsbuf = sbuf_new_auto();
776 	if (kwsbuf == NULL)
777 		err(1, "sbuf");
778 	for (i = s_item; i <= e_item; i++) {
779 		(void) sbuf_cat(kwsbuf, nl_langinfo(i));
780 		if (i != e_item)
781 			(void) sbuf_cat(kwsbuf, ";");
782 	}
783 	(void) sbuf_finish(kwsbuf);
784 	rval = strdup(sbuf_data(kwsbuf));
785 	if (rval == NULL)
786 		err(1, "strdup");
787 	sbuf_delete(kwsbuf);
788 	return (rval);
789 }
790 
791 /*
792  * keyword value and properties lookup
793  */
794 int
795 kwval_lookup(const char *kwname, char **kwval, int *cat, int *type, int *alloc)
796 {
797 	int	rval;
798 	size_t	i;
799 	static char nastr[3] = "-1";
800 
801 	rval = 0;
802 	*alloc = 0;
803 	for (i = 0; i < NKWINFO; i++) {
804 		if (strcasecmp(kwname, kwinfo[i].name) == 0) {
805 			rval = 1;
806 			*cat = kwinfo[i].catid;
807 			*type = kwinfo[i].type;
808 			switch (kwinfo[i].source) {
809 			case SRC_LINFO:
810 				*kwval = nl_langinfo(kwinfo[i].value_ref);
811 				break;
812 			case SRC_LCONV:
813 				*kwval = kwval_lconv(kwinfo[i].value_ref);
814 				/*
815 				 * XXX This check will need to be modified
816 				 * if/when localeconv() is fixed (PR172215).
817 				 */
818 				if (**kwval == CHAR_MAX) {
819 					if (*type == TYPE_NUM)
820 						*type = TYPE_UNQ;
821 					*kwval = nastr;
822 				}
823 				break;
824 			case SRC_LTIME:
825 				*kwval = kwval_ltime(kwinfo[i].value_ref);
826 				*alloc = 1;
827 				break;
828 			}
829 			break;
830 		}
831 	}
832 
833 	return (rval);
834 }
835 
836 /*
837  * Show details about requested keyword according to '-k' and/or '-c'
838  * command line options specified.
839  */
840 void
841 showdetails(const char *kw)
842 {
843 	int	type, cat, tmpval, alloc;
844 	char	*kwval;
845 
846 	if (kwval_lookup(kw, &kwval, &cat, &type, &alloc) == 0) {
847 		/*
848 		 * invalid keyword specified.
849 		 * XXX: any actions?
850 		 */
851 		fprintf(stderr, "Unknown keyword: `%s'\n", kw);
852 		return;
853 	}
854 
855 	if (prt_categories) {
856 		if (prt_keywords)
857 			printf("%-20s ", lookup_localecat(cat));
858 		else
859 			printf("%-20s\t%s\n", kw, lookup_localecat(cat));
860 	}
861 
862 	if (prt_keywords) {
863 		switch (type) {
864 		case TYPE_NUM:
865 			tmpval = (char)*kwval;
866 			printf("%s=%d\n", kw, tmpval);
867 			break;
868 		case TYPE_STR:
869 			printf("%s=\"%s\"\n", kw, kwval);
870 			break;
871 		case TYPE_UNQ:
872 			printf("%s=%s\n", kw, kwval);
873 			break;
874 		}
875 	}
876 
877 	if (!prt_categories && !prt_keywords) {
878 		switch (type) {
879 		case TYPE_NUM:
880 			tmpval = (char)*kwval;
881 			printf("%d\n", tmpval);
882 			break;
883 		case TYPE_STR:
884 		case TYPE_UNQ:
885 			printf("%s\n", kwval);
886 			break;
887 		}
888 	}
889 
890 	if (alloc)
891 		free(kwval);
892 }
893 
894 /*
895  * Convert locale category id into string
896  */
897 const char *
898 lookup_localecat(int cat)
899 {
900 	size_t	i;
901 
902 	for (i = 0; i < NLCINFO; i++)
903 		if (lcinfo[i].id == cat) {
904 			return (lcinfo[i].name);
905 		}
906 	return ("UNKNOWN");
907 }
908 
909 /*
910  * Show list of keywords
911  */
912 void
913 showkeywordslist(char *substring)
914 {
915 	size_t	i;
916 
917 #define	FMT "%-20s %-12s %-7s %-20s\n"
918 
919 	if (substring == NULL)
920 		printf("List of available keywords\n\n");
921 	else
922 		printf("List of available keywords starting with '%s'\n\n",
923 		    substring);
924 	printf(FMT, "Keyword", "Category", "Type", "Comment");
925 	printf("-------------------- ------------ ------- --------------------\n");
926 	for (i = 0; i < NKWINFO; i++) {
927 		if (substring != NULL) {
928 			if (strncmp(kwinfo[i].name, substring,
929 			    strlen(substring)) != 0)
930 				continue;
931 		}
932 		printf(FMT,
933 			kwinfo[i].name,
934 			lookup_localecat(kwinfo[i].catid),
935 			(kwinfo[i].type == TYPE_NUM) ? "number" : "string",
936 			kwinfo[i].comment);
937 	}
938 }
939