xref: /illumos-gate/usr/src/lib/libc/port/locale/lnumeric.c (revision a154f012db8e83f5f1b49be92c91827d1868a12a)
1 /*
2  * Copyright (c) 2000, 2001 Alexey Zelkin <phantom@FreeBSD.org>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 
27 /*
28  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
29  * Use is subject to license terms.
30  */
31 
32 #include "lint.h"
33 #include <limits.h>
34 #include "ldpart.h"
35 #include "lnumeric.h"
36 #include "../i18n/_locale.h"
37 
38 extern int __nlocale_changed;
39 extern const char *__fix_locale_grouping_str(const char *);
40 
41 #define	LCNUMERIC_SIZE (sizeof (struct lc_numeric_T) / sizeof (char *))
42 
43 static char	numempty[] = { CHAR_MAX, '\0' };
44 
45 static const struct lc_numeric_T _C_numeric_locale = {
46 	".",		/* decimal_point */
47 	"",		/* thousands_sep */
48 	numempty	/* grouping */
49 };
50 
51 static struct lc_numeric_T _numeric_locale;
52 static int	_numeric_using_locale;
53 static char	*_numeric_locale_buf;
54 
55 int
56 __numeric_load_locale(const char *name)
57 {
58 	int ret;
59 
60 	ret = __part_load_locale(name, &_numeric_using_locale,
61 	    &_numeric_locale_buf, "LC_NUMERIC", LCNUMERIC_SIZE, LCNUMERIC_SIZE,
62 	    (const char **)&_numeric_locale);
63 	if (ret != _LDP_ERROR)
64 		__nlocale_changed = 1;
65 	if (ret == _LDP_LOADED) {
66 		/* Can't be empty according to C99 */
67 		if (*_numeric_locale.decimal_point == '\0')
68 			_numeric_locale.decimal_point =
69 			    _C_numeric_locale.decimal_point;
70 		_numeric_locale.grouping =
71 		    __fix_locale_grouping_str(_numeric_locale.grouping);
72 
73 		/* This is Solaris legacy, required for _doprnt */
74 		_numeric[0] = *_numeric_locale.decimal_point;
75 		_numeric[1] = *_numeric_locale.grouping;
76 	}
77 	return (ret);
78 }
79 
80 struct lc_numeric_T *
81 __get_current_numeric_locale(void)
82 {
83 	return (_numeric_using_locale ? &_numeric_locale :
84 	    (struct lc_numeric_T *)&_C_numeric_locale);
85 }
86