/*      $NetBSD: _strtoi.h,v 1.5 2024/07/24 09:11:27 kre Exp $  */

/*-
* Copyright (c) 1990, 1993
*      The Regents of the University of California.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Original version ID:
* NetBSD: src/lib/libc/locale/_wcstoul.h,v 1.2 2003/08/07 16:43:03 agc Exp
*
* Created by Kamil Rytarowski, based on ID:
* NetBSD: src/common/lib/libc/stdlib/_strtoul.h,v 1.7 2013/05/17 12:55:56 joerg Exp
*/

/*
* function template for strtoi and strtou
*
* parameters:
*      _FUNCNAME    : function name
*      __TYPE       : return and range limits type
*      __WRAPPED    : wrapped function, strtoimax or strtoumax
*/

#define __WRAPPED_L_(x) x ## _l
#define __WRAPPED_L__(x) __WRAPPED_L_(x)
#define __WRAPPED_L __WRAPPED_L__(__WRAPPED)

#if defined(_KERNEL) || defined(_STANDALONE) || \
   defined(HAVE_NBTOOL_CONFIG_H) || defined(BCS_ONLY)
__TYPE
_FUNCNAME(const char * __restrict nptr, char ** __restrict endptr, int base,
         __TYPE lo, __TYPE hi, int * rstatus)
#else
#include <locale.h>
#include "setlocale_local.h"
#define INT_FUNCNAME_(pre, name, post)  pre ## name ## post
#define INT_FUNCNAME(pre, name, post)   INT_FUNCNAME_(pre, name, post)

static __TYPE
INT_FUNCNAME(_int_, _FUNCNAME, _l)(const char * __restrict nptr,
   char ** __restrict endptr, int base,
   __TYPE lo, __TYPE hi, int * rstatus, locale_t loc)
#endif
{
#if !defined(_KERNEL) && !defined(_STANDALONE)
       int serrno;
#endif
       __TYPE im;
       char *ep;
       int rep;

       _DIAGASSERT(hi >= lo);

       _DIAGASSERT(nptr != NULL);
       /* endptr may be NULL */

       if (endptr == NULL)
               endptr = &ep;

       if (rstatus == NULL)
               rstatus = &rep;

       *rstatus = 0;           /* assume there will be no errors */

       if (base != 0 && (base < 2 || base > 36)) {
#if !defined(_KERNEL) && !defined(_STANDALONE)
               *rstatus = EINVAL;
               if (endptr != NULL)
                       /* LINTED interface specification */
                       *endptr = __UNCONST(nptr);
               return 0;
#else
               panic("%s: invalid base %d", __func__, base);
#endif
       }

#if !defined(_KERNEL) && !defined(_STANDALONE)
       serrno = errno;
       errno = 0;
#endif

#if defined(_KERNEL) || defined(_STANDALONE) || \
   defined(HAVE_NBTOOL_CONFIG_H) || defined(BCS_ONLY)
       im = __WRAPPED(nptr, endptr, base);
#else
       im = __WRAPPED_L(nptr, endptr, base, loc);
#endif

#if !defined(_KERNEL) && !defined(_STANDALONE)
       /* EINVAL here can only mean "nothing converted" */
       if (errno != EINVAL)
               *rstatus = errno;
       errno = serrno;
#endif

       /* No digits were found */
       if (*rstatus == 0 && nptr == *endptr)
               *rstatus = ECANCELED;

       if (im < lo) {
               if (*rstatus == 0)
                       *rstatus = ERANGE;
               return lo;
       }

       if (im > hi) {
               if (*rstatus == 0)
                       *rstatus = ERANGE;
               return hi;
       }

       /* There are further characters after number */
       if (*rstatus == 0 && **endptr != '\0')
               *rstatus = ENOTSUP;

       return im;
}

#if !defined(_KERNEL) && !defined(_STANDALONE) && \
   !defined(HAVE_NBTOOL_CONFIG_H) && !defined(BCS_ONLY)
__TYPE
_FUNCNAME(const char * __restrict nptr, char ** __restrict endptr, int base,
   __TYPE lo, __TYPE hi, int * rstatus)
{
       return INT_FUNCNAME(_int_, _FUNCNAME, _l)(nptr, endptr, base, lo, hi,
           rstatus, _current_locale());
}

__TYPE
INT_FUNCNAME(, _FUNCNAME, _l)(const char * __restrict nptr,
   char ** __restrict endptr, int base,
   __TYPE lo, __TYPE hi, int * rstatus, locale_t loc)
{
       return INT_FUNCNAME(_int_, _FUNCNAME, _l)(nptr, endptr, base, lo, hi,
           rstatus, loc);
}
#endif