/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * 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.
 */

#ifndef _STRING_H_
#define _STRING_H_

#include <sys/cdefs.h>
#include <sys/_null.h>
#include <sys/_types.h>

/*
 * Prototype functions which were historically defined in <string.h>, but
 * are required by POSIX to be prototyped in <strings.h>.
 */
#if __BSD_VISIBLE
#include <strings.h>
#endif

#ifndef _SIZE_T_DECLARED
typedef __size_t        size_t;
#define _SIZE_T_DECLARED
#endif

#if !defined(_STANDALONE) && defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0
#include <ssp/string.h>
#endif

__BEGIN_DECLS
#if __XSI_VISIBLE >= 600 || __ISO_C_VISIBLE >= 2023
void    *memccpy(void * __restrict, const void * __restrict, int, size_t);
#endif
void    *memchr(const void *, int, size_t) __pure;
#if __BSD_VISIBLE
void    *memrchr(const void *, int, size_t) __pure;
#endif
int      memcmp(const void *, const void *, size_t) __pure;
void    *(memcpy)(void * __restrict, const void * __restrict, size_t);
#if __BSD_VISIBLE
void    *memmem(const void *, size_t, const void *, size_t) __pure;
#endif
void    *(memmove)(void *, const void *, size_t);
#if __BSD_VISIBLE
void    *(mempcpy)(void * __restrict, const void * __restrict, size_t);
#endif
void    *(memset)(void *, int, size_t);
#if __BSD_VISIBLE || __ISO_C_VISIBLE >= 2023
void    *memset_explicit(void *, int, size_t);
#endif
#if __POSIX_VISIBLE >= 200809
char    *(stpcpy)(char * __restrict, const char * __restrict);
char    *(stpncpy)(char * __restrict, const char * __restrict, size_t);
#endif
#if __BSD_VISIBLE
char    *strcasestr(const char *, const char *) __pure;
#endif
char    *(strcat)(char * __restrict, const char * __restrict);
char    *strchr(const char *, int) __pure;
#if __BSD_VISIBLE
char    *strchrnul(const char*, int) __pure;
int      strverscmp(const char *, const char *) __pure;
#endif
int      strcmp(const char *, const char *) __pure;
int      strcoll(const char *, const char *);
char    *(strcpy)(char * __restrict, const char * __restrict);
size_t   strcspn(const char *, const char *) __pure;
#if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE || __ISO_C_VISIBLE >= 2023
char    *strdup(const char *) __malloc_like;
#endif
char    *strerror(int);
#if __POSIX_VISIBLE >= 200112
int      strerror_r(int, char *, size_t);
#endif
#if __BSD_VISIBLE
size_t   (strlcat)(char * __restrict, const char * __restrict, size_t);
size_t   (strlcpy)(char * __restrict, const char * __restrict, size_t);
#endif
size_t   strlen(const char *) __pure;
#if __BSD_VISIBLE

#ifndef _MODE_T_DECLARED
typedef __mode_t        mode_t;
#define _MODE_T_DECLARED
#endif

void     strmode(mode_t, char *);
#endif
char    *(strncat)(char * __restrict, const char * __restrict, size_t);
int      strncmp(const char *, const char *, size_t) __pure;
char    *(strncpy)(char * __restrict, const char * __restrict, size_t);
#if __POSIX_VISIBLE >= 200809 || __ISO_C_VISIBLE >= 2023
char    *strndup(const char *, size_t) __malloc_like;
#endif
#if __POSIX_VISIBLE >= 200809
size_t   strnlen(const char *, size_t) __pure;
#endif
#if __BSD_VISIBLE
char    *strnstr(const char *, const char *, size_t) __pure;
#endif
char    *strpbrk(const char *, const char *) __pure;
char    *strrchr(const char *, int) __pure;
#if __BSD_VISIBLE
char    *strsep(char **, const char *);
#endif
#if __POSIX_VISIBLE >= 200809
char    *strsignal(int);
#endif
size_t   strspn(const char *, const char *) __pure;
char    *strstr(const char *, const char *) __pure;
char    *strtok(char * __restrict, const char * __restrict);
#if __POSIX_VISIBLE >= 199506 || __XSI_VISIBLE >= 500
char    *strtok_r(char *, const char *, char **);
#endif
size_t   strxfrm(char * __restrict, const char * __restrict, size_t);
#if __BSD_VISIBLE

#ifndef _SWAB_DECLARED
#define _SWAB_DECLARED

#ifndef _SSIZE_T_DECLARED
typedef __ssize_t       ssize_t;
#define _SSIZE_T_DECLARED
#endif /* _SIZE_T_DECLARED */

void     swab(const void * __restrict, void * __restrict, ssize_t);
#endif /* _SWAB_DECLARED */

int      timingsafe_bcmp(const void *, const void *, size_t);
int      timingsafe_memcmp(const void *, const void *, size_t);

#if __has_builtin(__builtin_alloca)
#define strdupa(_Str) (__extension__({                          \
        const char *_Str1;                                      \
        size_t _Len;                                            \
        char *_Copy;                                            \
                                                                \
        _Str1 = (_Str);                                         \
        _Len = strlen(_Str1) + 1;                               \
        _Copy = (char *)__builtin_alloca(_Len);                 \
        memcpy(_Copy, _Str1, _Len);                             \
        _Copy;                                                  \
}))

#define strndupa(_Str, _Maxlen) (__extension__({                \
        const char *_Str1;                                      \
        char *_Copy;                                            \
        size_t _Len;                                            \
                                                                \
        _Str1 = (_Str);                                         \
        _Len = strnlen((_Str1), (_Maxlen));                     \
        _Copy = __builtin_alloca(_Len + 1);                     \
        (void)memcpy(_Copy, _Str1, _Len);                       \
        _Copy[_Len] = '\0';                                     \
        _Copy;                                                  \
}))
#endif

#endif /* __BSD_VISIBLE */

#if __POSIX_VISIBLE >= 200112 || defined(_XLOCALE_H_)
#include <xlocale/_string.h>
#endif

#if __EXT1_VISIBLE

#ifndef _RSIZE_T_DEFINED
#define _RSIZE_T_DEFINED
typedef size_t rsize_t;
#endif

#ifndef _ERRNO_T_DEFINED
#define _ERRNO_T_DEFINED
typedef int errno_t;
#endif

/* ISO/IEC 9899:2011 K.3.7.4.1.1 */
errno_t memset_s(void *, rsize_t, int, rsize_t);
#endif /* __EXT1_VISIBLE */
__END_DECLS

#endif /* _STRING_H_ */