common/lib/libc/stdlib/_strtoi.h

   1 /*      $NetBSD: _strtoi.h,v 1.2 2015/01/18 17:55:22 christos Exp $     */
   2
   3 /*-
   4  * Copyright (c) 1990, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  * Original version ID:
  32  * NetBSD: src/lib/libc/locale/_wcstoul.h,v 1.2 2003/08/07 16:43:03 agc Exp
  33  *
  34  * Created by Kamil Rytarowski, based on ID:
  35  * NetBSD: src/common/lib/libc/stdlib/_strtoul.h,v 1.7 2013/05/17 12:55:56 joerg Exp
  36  */
  37
  38 /*
  39  * function template for strtoi and strtou
  40  *
  41  * parameters:
  42  *      _FUNCNAME    : function name
  43  *      __TYPE       : return and range limits type
  44  *      __WRAPPED    : wrapped function, strtoimax or strtoumax
  45  */
  46
  47 #define __WRAPPED_L_(x) x ## _l
  48 #define __WRAPPED_L__(x) __WRAPPED_L_(x)
  49 #define __WRAPPED_L __WRAPPED_L__(__WRAPPED)
  50
  51 #if defined(_KERNEL) || defined(_STANDALONE) || \
  52     defined(HAVE_NBTOOL_CONFIG_H) || defined(BCS_ONLY)
  53 __TYPE
  54 _FUNCNAME(const char * __restrict nptr, char ** __restrict endptr, int base,
  55           __TYPE lo, __TYPE hi, int * rstatus)
  56 #else
  57 #include <locale.h>
  58 #include "setlocale_local.h"
  59 #define INT_FUNCNAME_(pre, name, post)  pre ## name ## post
  60 #define INT_FUNCNAME(pre, name, post)   INT_FUNCNAME_(pre, name, post)
  61
  62 static __TYPE
  63 INT_FUNCNAME(_int_, _FUNCNAME, _l)(const char * __restrict nptr,
  64     char ** __restrict endptr, int base,
  65     __TYPE lo, __TYPE hi, int * rstatus, locale_t loc)
  66 #endif
  67 {
  68 #if !defined(_KERNEL) && !defined(_STANDALONE)
  69         int serrno;
  70 #endif
  71         __TYPE im;
  72         char *ep;
  73         int rep;
  74
  75         _DIAGASSERT(hi >= lo);
  76
  77         _DIAGASSERT(nptr != NULL);
  78         /* endptr may be NULL */
  79
  80         if (endptr == NULL)
  81                 endptr = &ep;
  82
  83         if (rstatus == NULL)
  84                 rstatus = &rep;
  85
  86 #if !defined(_KERNEL) && !defined(_STANDALONE)
  87         serrno = errno;
  88         errno = 0;
  89 #endif
  90
  91 #if defined(_KERNEL) || defined(_STANDALONE) || \
  92     defined(HAVE_NBTOOL_CONFIG_H) || defined(BCS_ONLY)
  93         im = __WRAPPED(nptr, endptr, base);
  94 #else
  95         im = __WRAPPED_L(nptr, endptr, base, loc);
  96 #endif
  97
  98 #if !defined(_KERNEL) && !defined(_STANDALONE)
  99         *rstatus = errno;
 100         errno = serrno;
 101 #endif
 102
 103         if (*rstatus == 0) {
 104                 /* No digits were found */
 105                 if (nptr == *endptr)
 106                         *rstatus = ECANCELED;
 107                 /* There are further characters after number */
 108                 else if (**endptr != '\0')
 109                         *rstatus = ENOTSUP;
 110         }
 111
 112         if (im < lo) {
 113                 if (*rstatus == 0)
 114                         *rstatus = ERANGE;
 115                 return lo;
 116         }
 117         if (im > hi) {
 118                 if (*rstatus == 0)
 119                         *rstatus = ERANGE;
 120                 return hi;
 121         }
 122
 123         return im;
 124 }
 125
 126 #if !defined(_KERNEL) && !defined(_STANDALONE) && \
 127     !defined(HAVE_NBTOOL_CONFIG_H) && !defined(BCS_ONLY)
 128 __TYPE
 129 _FUNCNAME(const char * __restrict nptr, char ** __restrict endptr, int base,
 130     __TYPE lo, __TYPE hi, int * rstatus)
 131 {
 132         return INT_FUNCNAME(_int_, _FUNCNAME, _l)(nptr, endptr, base, lo, hi,
 133             rstatus, _current_locale());
 134 }
 135
 136 __TYPE
 137 INT_FUNCNAME(, _FUNCNAME, _l)(const char * __restrict nptr,
 138     char ** __restrict endptr, int base,
 139     __TYPE lo, __TYPE hi, int * rstatus, locale_t loc)
 140 {
 141         return INT_FUNCNAME(_int_, _FUNCNAME, _l)(nptr, endptr, base, lo, hi,
 142             rstatus, loc);
 143 }
 144 #endif