xref: /illumos-gate/usr/src/lib/libc/port/locale/tolower.c (revision c5bab7026b8e0ac44b25ee08507ea360f177d844)
1 /*
2  * This file and its contents are supplied under the terms of the
3  * Common Development and Distribution License ("CDDL"), version 1.0.
4  * You may only use this file in accordance with the terms of version
5  * 1.0 of the CDDL.
6  *
7  * A full copy of the text of the CDDL should have accompanied this
8  * source.  A copy of the CDDL is also available via the Internet at
9  * http://www.illumos.org/license/CDDL.
10  */
11 
12 /*
13  * Copyright 2013 Garrett D'Amore <garrett@damore.org>
14  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
15  */
16 #include "lint.h"
17 #include <ctype.h>
18 #include <locale.h>
19 #include "localeimpl.h"
20 #include "lctype.h"
21 
22 #pragma weak _tolower = tolower
23 #pragma weak _toupper = toupper
24 
25 int
26 tolower_l(int c, locale_t loc)
27 {
28 	return (((unsigned)c > 255) ? c : loc->ctype->lc_trans_lower[c]);
29 }
30 
31 int
32 toupper_l(int c, locale_t loc)
33 {
34 	return (((unsigned)c > 255) ? c : loc->ctype->lc_trans_upper[c]);
35 }
36 
37 #undef tolower
38 int
39 tolower(int c)
40 {
41 	return (isascii(c) ? __trans_lower[c] : tolower_l(c, uselocale(NULL)));
42 }
43 
44 #undef toupper
45 int
46 toupper(int c)
47 {
48 	return (isascii(c) ? __trans_upper[c] : toupper_l(c, uselocale(NULL)));
49 }
50