1// -*- C++ -*- 2//===--------------------------- string.h ---------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP_STRING_H 11#define _LIBCPP_STRING_H 12 13/* 14 string.h synopsis 15 16Macros: 17 18 NULL 19 20Types: 21 22 size_t 23 24void* memcpy(void* restrict s1, const void* restrict s2, size_t n); 25void* memmove(void* s1, const void* s2, size_t n); 26char* strcpy (char* restrict s1, const char* restrict s2); 27char* strncpy(char* restrict s1, const char* restrict s2, size_t n); 28char* strcat (char* restrict s1, const char* restrict s2); 29char* strncat(char* restrict s1, const char* restrict s2, size_t n); 30int memcmp(const void* s1, const void* s2, size_t n); 31int strcmp (const char* s1, const char* s2); 32int strncmp(const char* s1, const char* s2, size_t n); 33int strcoll(const char* s1, const char* s2); 34size_t strxfrm(char* restrict s1, const char* restrict s2, size_t n); 35const void* memchr(const void* s, int c, size_t n); 36 void* memchr( void* s, int c, size_t n); 37const char* strchr(const char* s, int c); 38 char* strchr( char* s, int c); 39size_t strcspn(const char* s1, const char* s2); 40const char* strpbrk(const char* s1, const char* s2); 41 char* strpbrk( char* s1, const char* s2); 42const char* strrchr(const char* s, int c); 43 char* strrchr( char* s, int c); 44size_t strspn(const char* s1, const char* s2); 45const char* strstr(const char* s1, const char* s2); 46 char* strstr( char* s1, const char* s2); 47char* strtok(char* restrict s1, const char* restrict s2); 48void* memset(void* s, int c, size_t n); 49char* strerror(int errnum); 50size_t strlen(const char* s); 51 52*/ 53 54#include <__config> 55 56#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 57#pragma GCC system_header 58#endif 59 60#include_next <string.h> 61 62// MSVCRT, GNU libc and its derivates may already have the correct prototype in 63// <string.h>. This macro can be defined by users if their C library provides 64// the right signature. 65#if defined(__CORRECT_ISO_CPP_STRING_H_PROTO) || defined(_LIBCPP_MSVCRT) || \ 66 defined(__sun__) || defined(_STRING_H_CPLUSPLUS_98_CONFORMANCE_) 67#define _LIBCPP_STRING_H_HAS_CONST_OVERLOADS 68#endif 69 70#if defined(__cplusplus) && !defined(_LIBCPP_STRING_H_HAS_CONST_OVERLOADS) && defined(_LIBCPP_PREFERRED_OVERLOAD) 71extern "C++" { 72inline _LIBCPP_INLINE_VISIBILITY 73char* __libcpp_strchr(const char* __s, int __c) {return (char*)strchr(__s, __c);} 74inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD 75const char* strchr(const char* __s, int __c) {return __libcpp_strchr(__s, __c);} 76inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD 77 char* strchr( char* __s, int __c) {return __libcpp_strchr(__s, __c);} 78 79inline _LIBCPP_INLINE_VISIBILITY 80char* __libcpp_strpbrk(const char* __s1, const char* __s2) {return (char*)strpbrk(__s1, __s2);} 81inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD 82const char* strpbrk(const char* __s1, const char* __s2) {return __libcpp_strpbrk(__s1, __s2);} 83inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD 84 char* strpbrk( char* __s1, const char* __s2) {return __libcpp_strpbrk(__s1, __s2);} 85 86inline _LIBCPP_INLINE_VISIBILITY 87char* __libcpp_strrchr(const char* __s, int __c) {return (char*)strrchr(__s, __c);} 88inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD 89const char* strrchr(const char* __s, int __c) {return __libcpp_strrchr(__s, __c);} 90inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD 91 char* strrchr( char* __s, int __c) {return __libcpp_strrchr(__s, __c);} 92 93inline _LIBCPP_INLINE_VISIBILITY 94void* __libcpp_memchr(const void* __s, int __c, size_t __n) {return (void*)memchr(__s, __c, __n);} 95inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD 96const void* memchr(const void* __s, int __c, size_t __n) {return __libcpp_memchr(__s, __c, __n);} 97inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD 98 void* memchr( void* __s, int __c, size_t __n) {return __libcpp_memchr(__s, __c, __n);} 99 100inline _LIBCPP_INLINE_VISIBILITY 101char* __libcpp_strstr(const char* __s1, const char* __s2) {return (char*)strstr(__s1, __s2);} 102inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD 103const char* strstr(const char* __s1, const char* __s2) {return __libcpp_strstr(__s1, __s2);} 104inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD 105 char* strstr( char* __s1, const char* __s2) {return __libcpp_strstr(__s1, __s2);} 106} 107#endif 108 109#endif // _LIBCPP_STRING_H 110