xref: /illumos-gate/usr/src/lib/libc/port/locale/nl_langinfo.c (revision 69a119caa6570c7077699161b7c28b6ee9f8b0f4)
1 /*
2  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
3  * Copyright (c) 2001, 2003 Alexey Zelkin <phantom@FreeBSD.org>
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25  * SUCH DAMAGE.
26  */
27 
28 #include "lint.h"
29 #include <langinfo.h>
30 #include <limits.h>
31 #include <locale.h>
32 #include <stdlib.h>
33 #include <string.h>
34 
35 #include "lnumeric.h"
36 #include "lmessages.h"
37 #include "lmonetary.h"
38 #include "timelocal.h"
39 
40 #define	_REL(BASE) ((int)item-BASE)
41 
42 #define	MONETARY	(__get_current_monetary_locale())
43 #define	TIME		(__get_current_time_locale())
44 #define	MESSAGES	(__get_current_messages_locale())
45 #define	NUMERIC		(__get_current_numeric_locale())
46 
47 #pragma weak _nl_langinfo = nl_langinfo
48 
49 char *
50 nl_langinfo(nl_item item)
51 {
52 	char *ret, *s, *cs;
53 	static char *csym = NULL;
54 
55 	switch (item) {
56 	case CODESET:
57 		ret = "";
58 		/*
59 		 * The codeset is the suffix of a locale, for most it will
60 		 * will be UTF-8, as in "en.UTF-8".  Short form locales are
61 		 * not supported.  Note also that although FreeBSD uses
62 		 * US-ASCII, Solaris historically has reported "646" for the
63 		 * C locale.
64 		 */
65 		if ((s = setlocale(LC_CTYPE, NULL)) != NULL) {
66 			if ((cs = strchr(s, '.')) != NULL)
67 				ret = cs + 1;
68 			else if (strcmp(s, "C") == 0 || strcmp(s, "POSIX") == 0)
69 				ret = "646";
70 		}
71 		break;
72 	case D_T_FMT:
73 		ret = (char *)TIME->c_fmt;
74 		break;
75 	case D_FMT:
76 		ret = (char *)TIME->x_fmt;
77 		break;
78 	case T_FMT:
79 		ret = (char *)TIME->X_fmt;
80 		break;
81 	case T_FMT_AMPM:
82 		ret = (char *)TIME->ampm_fmt;
83 		break;
84 	case AM_STR:
85 		ret = (char *)TIME->am;
86 		break;
87 	case PM_STR:
88 		ret = (char *)TIME->pm;
89 		break;
90 	case DAY_1: case DAY_2: case DAY_3:
91 	case DAY_4: case DAY_5: case DAY_6: case DAY_7:
92 		ret = (char *)TIME->weekday[_REL(DAY_1)];
93 		break;
94 	case ABDAY_1: case ABDAY_2: case ABDAY_3:
95 	case ABDAY_4: case ABDAY_5: case ABDAY_6: case ABDAY_7:
96 		ret = (char *)TIME->wday[_REL(ABDAY_1)];
97 		break;
98 	case MON_1: case MON_2: case MON_3: case MON_4:
99 	case MON_5: case MON_6: case MON_7: case MON_8:
100 	case MON_9: case MON_10: case MON_11: case MON_12:
101 		ret = (char *)TIME->month[_REL(MON_1)];
102 		break;
103 	case ABMON_1: case ABMON_2: case ABMON_3: case ABMON_4:
104 	case ABMON_5: case ABMON_6: case ABMON_7: case ABMON_8:
105 	case ABMON_9: case ABMON_10: case ABMON_11: case ABMON_12:
106 		ret = (char *)TIME->mon[_REL(ABMON_1)];
107 		break;
108 	case ERA:
109 		/* XXX: need to be implemented  */
110 		ret = "";
111 		break;
112 	case ERA_D_FMT:
113 		/* XXX: need to be implemented  */
114 		ret = "";
115 		break;
116 	case ERA_D_T_FMT:
117 		/* XXX: need to be implemented  */
118 		ret = "";
119 		break;
120 	case ERA_T_FMT:
121 		/* XXX: need to be implemented  */
122 		ret = "";
123 		break;
124 	case ALT_DIGITS:
125 		/* XXX: need to be implemented  */
126 		ret = "";
127 		break;
128 	case RADIXCHAR:
129 		ret = (char *)NUMERIC->decimal_point;
130 		break;
131 	case THOUSEP:
132 		ret = (char *)NUMERIC->thousands_sep;
133 		break;
134 	case YESEXPR:
135 		ret = (char *)MESSAGES->yesexpr;
136 		break;
137 	case NOEXPR:
138 		ret = (char *)MESSAGES->noexpr;
139 		break;
140 	/*
141 	 * YESSTR and NOSTR items marked with LEGACY are available, but not
142 	 * recomended by SUSv2 to be used in portable applications since
143 	 * they're subject to remove in future specification editions.
144 	 */
145 	case YESSTR:	/* LEGACY  */
146 		ret = (char *)MESSAGES->yesstr;
147 		break;
148 	case NOSTR:	/* LEGACY  */
149 		ret = (char *)MESSAGES->nostr;
150 		break;
151 	/*
152 	 * SUSv2 special formatted currency string
153 	 */
154 	case CRNCYSTR:
155 		ret = "";
156 		cs = (char *)MONETARY->currency_symbol;
157 		if (*cs != '\0') {
158 			char pos = localeconv()->p_cs_precedes;
159 
160 			if (pos == localeconv()->n_cs_precedes) {
161 				char psn = '\0';
162 
163 				if (pos == CHAR_MAX) {
164 					if (strcmp(cs,
165 					    MONETARY->mon_decimal_point) == 0)
166 						psn = '.';
167 				} else
168 					psn = pos ? '-' : '+';
169 				if (psn != '\0') {
170 					int clen = strlen(cs);
171 					char *newc;
172 
173 					newc = realloc(csym, clen + 2);
174 					if (newc != NULL) {
175 						free(csym);
176 						csym = newc;
177 						*csym = psn;
178 						(void) strcpy(csym + 1, cs);
179 						ret = csym;
180 					}
181 				}
182 			}
183 		}
184 		break;
185 	case _DATE_FMT:		/* Solaris specific extension */
186 		ret = (char *)TIME->date_fmt;
187 		break;
188 	/*
189 	 * Note that FreeBSD also had a private D_MD_ORDER, but that appears
190 	 * to have been specific to FreeBSD, so we have not included it here.
191 	 */
192 	default:
193 		ret = "";
194 	}
195 	return (ret);
196 }
197