locale/runedepreciated.c

   1 /*
   2  * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #include "xlocale_private.h"
  25
  26 #include <string.h>
  27 #include <rune.h>
  28 #include <stdlib.h>
  29 #include <wchar.h>
  30 #include "runedepreciated.h"
  31
  32 __private_extern__ const char __rune_depreciated_msg[] = "\
  33 %s and other functions prototyped in rune.h are depreciated in favor of\n\
  34 the ISO C99 extended multibyte and wide character facilities and should not\n\
  35 be used in new applications.\n\
  36 ";
  37
  38 __private_extern__ rune_t
  39 __sgetrune(const char *string, size_t n, char const **result)
  40 {
  41         wchar_t wc;
  42         size_t converted = mbrtowc(&wc, string, n, NULL);
  43         __darwin_rune_t invalid_rune = __current_locale()->__lc_ctype->_CurrentRuneLocale.__invalid_rune;
  44
  45         switch (converted) {
  46         case (size_t)-2:        /* incomplete */
  47                 if (result)
  48                         *result = string;
  49                 return invalid_rune;
  50         case (size_t)-1:        /* invalid */
  51                 if (result)
  52                         *result = string + 1;
  53                 return invalid_rune;
  54         case (size_t)0:         /* null wide character */
  55         {
  56                 int i;
  57
  58                 for (i = 1; i < n; i++)
  59                         if (mbrtowc(&wc, string, n, NULL) == (size_t)0)
  60                                 break;
  61                 if (result)
  62                         *result = string + i;
  63                 return (rune_t)0;
  64         }
  65         default:
  66                 if (result)
  67                         *result = string + converted;
  68                 return (rune_t)wc;
  69         }
  70         /* NOTREACHED */
  71 }
  72
  73 __private_extern__ int
  74 __sputrune(rune_t rune, char *string, size_t n, char **result)
  75 {
  76         char buf[MB_CUR_MAX];
  77         size_t converted = wcrtomb(buf, rune, NULL);
  78
  79         if (converted < 0) {
  80                 if (result)
  81                         *result = string;
  82         } else if (n >= converted) {
  83                 if (string)
  84                         bcopy(buf, string, converted);
  85                 if (result)
  86                         *result = string + converted;
  87         } else if (result)
  88                 *result = NULL;
  89         return (converted < 0 ? 0 : converted);
  90 }
  91
  92 __private_extern__ rune_t
  93 sgetrune(const char *string, size_t n, char const **result)
  94 {
  95         static int warn_depreciated = 1;
  96
  97         if (warn_depreciated) {
  98                 warn_depreciated = 0;
  99                 fprintf(stderr, __rune_depreciated_msg, "sgetrune");
 100         }
 101         return __sgetrune(string, n, result);
 102 }
 103
 104 __private_extern__ int
 105 sputrune(rune_t rune, char *string, size_t n, char **result)
 106 {
 107         static int warn_depreciated = 1;
 108
 109         if (warn_depreciated) {
 110                 warn_depreciated = 0;
 111                 fprintf(stderr, __rune_depreciated_msg, "sputrune");
 112         }
 113         return __sputrune(rune, string, n, result);
 114 }