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_strtoi.h revision 1.4 
      1 /*	$NetBSD: _strtoi.h,v 1.4 2024/07/21 17:40:42 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1990, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  * Copyright (c) 2024, Alejandro Colomar <alx (at) kernel.org>
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. Neither the name of the University nor the names of its contributors
     17  *    may be used to endorse or promote products derived from this software
     18  *    without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     30  * SUCH DAMAGE.
     31  *
     32  * Original version ID:
     33  * NetBSD: src/lib/libc/locale/_wcstoul.h,v 1.2 2003/08/07 16:43:03 agc Exp
     34  *
     35  * Created by Kamil Rytarowski, based on ID:
     36  * NetBSD: src/common/lib/libc/stdlib/_strtoul.h,v 1.7 2013/05/17 12:55:56 joerg Exp
     37  */
     38 
     39 /*
     40  * function template for strtoi and strtou
     41  *
     42  * parameters:
     43  *	_FUNCNAME    : function name
     44  *      __TYPE       : return and range limits type
     45  *      __WRAPPED    : wrapped function, strtoimax or strtoumax
     46  */
     47 
     48 #define __WRAPPED_L_(x) x ## _l
     49 #define __WRAPPED_L__(x) __WRAPPED_L_(x)
     50 #define __WRAPPED_L __WRAPPED_L__(__WRAPPED)
     51 
     52 #if defined(_KERNEL) || defined(_STANDALONE) || \
     53     defined(HAVE_NBTOOL_CONFIG_H) || defined(BCS_ONLY)
     54 __TYPE
     55 _FUNCNAME(const char * __restrict nptr, char ** __restrict endptr, int base,
     56           __TYPE lo, __TYPE hi, int * rstatus)
     57 #else
     58 #include <locale.h>
     59 #include "setlocale_local.h"
     60 #define INT_FUNCNAME_(pre, name, post)	pre ## name ## post
     61 #define INT_FUNCNAME(pre, name, post)	INT_FUNCNAME_(pre, name, post)
     62 
     63 static __TYPE
     64 INT_FUNCNAME(_int_, _FUNCNAME, _l)(const char * __restrict nptr,
     65     char ** __restrict endptr, int base,
     66     __TYPE lo, __TYPE hi, int * rstatus, locale_t loc)
     67 #endif
     68 {
     69 #if !defined(_KERNEL) && !defined(_STANDALONE)
     70 	int serrno;
     71 #endif
     72 	__TYPE im;
     73 	char *e;
     74 	int rep;
     75 
     76 	_DIAGASSERT(hi >= lo);
     77 
     78 	_DIAGASSERT(nptr != NULL);
     79 	/* endptr may be NULL */
     80 
     81 	e = NULL;
     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, &e, base);
     94 #else
     95 	im = __WRAPPED_L(nptr, &e, base, loc);
     96 #endif
     97 
     98 #if !defined(_KERNEL) && !defined(_STANDALONE)
     99 	*rstatus = errno;
    100 	errno = serrno;
    101 #endif
    102 
    103 	if (endptr != NULL && e != NULL)
    104 		*endptr = e;
    105 
    106 	/* No digits were found */
    107 	if (nptr == e && (*rstatus == 0 || *rstatus == EINVAL))
    108 		*rstatus = ECANCELED;
    109 
    110 	if (im < lo) {
    111 		if (*rstatus == 0)
    112 			*rstatus = ERANGE;
    113 		return lo;
    114 	}
    115 
    116 	if (im > hi) {
    117 		if (*rstatus == 0)
    118 			*rstatus = ERANGE;
    119 		return hi;
    120 	}
    121 
    122 	/* There are further characters after number */
    123 	if (*rstatus == 0 && *e != '\0')
    124 		*rstatus = ENOTSUP;
    125 
    126 	return im;
    127 }
    128 
    129 #if !defined(_KERNEL) && !defined(_STANDALONE) && \
    130     !defined(HAVE_NBTOOL_CONFIG_H) && !defined(BCS_ONLY)
    131 __TYPE
    132 _FUNCNAME(const char * __restrict nptr, char ** __restrict endptr, int base,
    133     __TYPE lo, __TYPE hi, int * rstatus)
    134 {
    135 	return INT_FUNCNAME(_int_, _FUNCNAME, _l)(nptr, endptr, base, lo, hi,
    136 	    rstatus, _current_locale());
    137 }
    138 
    139 __TYPE
    140 INT_FUNCNAME(, _FUNCNAME, _l)(const char * __restrict nptr,
    141     char ** __restrict endptr, int base,
    142     __TYPE lo, __TYPE hi, int * rstatus, locale_t loc)
    143 {
    144 	return INT_FUNCNAME(_int_, _FUNCNAME, _l)(nptr, endptr, base, lo, hi,
    145 	    rstatus, loc);
    146 }
    147 #endif
    148