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 16 Macros: 17 18 NULL 19 20 Types: 21 22 size_t 23 24 void* memcpy(void* restrict s1, const void* restrict s2, size_t n); 25 void* memmove(void* s1, const void* s2, size_t n); 26 char* strcpy (char* restrict s1, const char* restrict s2); 27 char* strncpy(char* restrict s1, const char* restrict s2, size_t n); 28 char* strcat (char* restrict s1, const char* restrict s2); 29 char* strncat(char* restrict s1, const char* restrict s2, size_t n); 30 int memcmp(const void* s1, const void* s2, size_t n); 31 int strcmp (const char* s1, const char* s2); 32 int strncmp(const char* s1, const char* s2, size_t n); 33 int strcoll(const char* s1, const char* s2); 34 size_t strxfrm(char* restrict s1, const char* restrict s2, size_t n); 35 const void* memchr(const void* s, int c, size_t n); 36 void* memchr( void* s, int c, size_t n); 37 const char* strchr(const char* s, int c); 38 char* strchr( char* s, int c); 39 size_t strcspn(const char* s1, const char* s2); 40 const char* strpbrk(const char* s1, const char* s2); 41 char* strpbrk( char* s1, const char* s2); 42 const char* strrchr(const char* s, int c); 43 char* strrchr( char* s, int c); 44 size_t strspn(const char* s1, const char* s2); 45 const char* strstr(const char* s1, const char* s2); 46 char* strstr( char* s1, const char* s2); 47 char* strtok(char* restrict s1, const char* restrict s2); 48 void* memset(void* s, int c, size_t n); 49 char* strerror(int errnum); 50 size_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) 71 extern "C++" { 72 inline _LIBCPP_INLINE_VISIBILITY 73 char* __libcpp_strchr(const char* __s, int __c) {return (char*)strchr(__s, __c);} 74 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD 75 const char* strchr(const char* __s, int __c) {return __libcpp_strchr(__s, __c);} 76 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD 77 char* strchr( char* __s, int __c) {return __libcpp_strchr(__s, __c);} 78 79 inline _LIBCPP_INLINE_VISIBILITY 80 char* __libcpp_strpbrk(const char* __s1, const char* __s2) {return (char*)strpbrk(__s1, __s2);} 81 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD 82 const char* strpbrk(const char* __s1, const char* __s2) {return __libcpp_strpbrk(__s1, __s2);} 83 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD 84 char* strpbrk( char* __s1, const char* __s2) {return __libcpp_strpbrk(__s1, __s2);} 85 86 inline _LIBCPP_INLINE_VISIBILITY 87 char* __libcpp_strrchr(const char* __s, int __c) {return (char*)strrchr(__s, __c);} 88 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD 89 const char* strrchr(const char* __s, int __c) {return __libcpp_strrchr(__s, __c);} 90 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD 91 char* strrchr( char* __s, int __c) {return __libcpp_strrchr(__s, __c);} 92 93 inline _LIBCPP_INLINE_VISIBILITY 94 void* __libcpp_memchr(const void* __s, int __c, size_t __n) {return (void*)memchr(__s, __c, __n);} 95 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD 96 const void* memchr(const void* __s, int __c, size_t __n) {return __libcpp_memchr(__s, __c, __n);} 97 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD 98 void* memchr( void* __s, int __c, size_t __n) {return __libcpp_memchr(__s, __c, __n);} 99 100 inline _LIBCPP_INLINE_VISIBILITY 101 char* __libcpp_strstr(const char* __s1, const char* __s2) {return (char*)strstr(__s1, __s2);} 102 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_PREFERRED_OVERLOAD 103 const char* strstr(const char* __s1, const char* __s2) {return __libcpp_strstr(__s1, __s2);} 104 inline _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