usr/src/lib/libc/port/locale/tolower.c

   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 }