#include<string.h>：
/*
* string.h
*
* ISO-C standard header, with MSVC compatible extensions.
*
* $Id: string.h,v 9214845bad91 2017/12/18 11:45:49 keith $
*
* Written by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
* Copyright (C) 1997-2000, 2002-2004, 2007, 2009, 2015-2017,
* MinGW.org Project.
*
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice, this permission notice, and the following
* disclaimer shall be included in all copies or substantial portions of
* the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OF OR OTHER
* DEALINGS IN THE SOFTWARE.
*
*/
#ifndef _STRING_H
#pragma GCC system_header
#define _STRING_H
/* All MinGW system headers must include this...
*/
#include <_mingw.h>
#ifndef RC_INVOKED
/* ISO-C requires this header to expose definitions for NULL and size_t,
* retaining compatiblity with their fundamental <stddef.h> definitions.
*/
#define __need_NULL
#define __need_size_t
#ifndef __STRICT_ANSI__
/* MSVC extends this requirement to include a definition of wchar_t,
* (which contravenes strict ISO-C standards conformity).
*/
# define __need_wchar_t
#endif
#include <stddef.h>
#if _EMULATE_GLIBC
/* GNU's glibc declares strcasecmp() and strncasecmp() in <string.h>,
* contravening POSIX.1-2008 which requires them to be declared only in
* <strings.h>; we may emulate this anomalous glibc behaviour, which is
* ostensibly to support BSD usage, (in spite of such usage now being
* obsolete in BSD), by simply including our <strings.h> here.
*/
#include <strings.h>
#endif
_BEGIN_C_DECLS
#define __STRING_H_SOURCED__
/* Prototypes for the ISO-C Standard library string functions.
*/
_CRTIMP __cdecl __MINGW_NOTHROW void *memchr (const void *, int, size_t) __MINGW_ATTRIB_PURE;
_CRTIMP __cdecl __MINGW_NOTHROW int memcmp (const void *, const void *, size_t) __MINGW_ATTRIB_PURE;
_CRTIMP __cdecl __MINGW_NOTHROW void *memcpy (void *, const void *, size_t);
_CRTIMP __cdecl __MINGW_NOTHROW void *memmove (void *, const void *, size_t);
_CRTIMP __cdecl __MINGW_NOTHROW void *memset (void *, int, size_t);
_CRTIMP __cdecl __MINGW_NOTHROW char *strcat (char *, const char *);
_CRTIMP __cdecl __MINGW_NOTHROW char *strchr (const char *, int) __MINGW_ATTRIB_PURE;
_CRTIMP __cdecl __MINGW_NOTHROW int strcmp (const char *, const char *) __MINGW_ATTRIB_PURE;
_CRTIMP __cdecl __MINGW_NOTHROW int strcoll (const char *, const char *); /* Compare using locale */
_CRTIMP __cdecl __MINGW_NOTHROW char *strcpy (char *, const char *);
_CRTIMP __cdecl __MINGW_NOTHROW size_t strcspn (const char *, const char *) __MINGW_ATTRIB_PURE;
_CRTIMP __cdecl __MINGW_NOTHROW char *strerror (int); /* NOTE: NOT an old name wrapper. */
_CRTIMP __cdecl __MINGW_NOTHROW size_t strlen (const char *) __MINGW_ATTRIB_PURE;
_CRTIMP __cdecl __MINGW_NOTHROW char *strncat (char *, const char *, size_t);
_CRTIMP __cdecl __MINGW_NOTHROW int strncmp (const char *, const char *, size_t) __MINGW_ATTRIB_PURE;
_CRTIMP __cdecl __MINGW_NOTHROW char *strncpy (char *, const char *, size_t);
_CRTIMP __cdecl __MINGW_NOTHROW char *strpbrk (const char *, const char *) __MINGW_ATTRIB_PURE;
_CRTIMP __cdecl __MINGW_NOTHROW char *strrchr (const char *, int) __MINGW_ATTRIB_PURE;
_CRTIMP __cdecl __MINGW_NOTHROW size_t strspn (const char *, const char *) __MINGW_ATTRIB_PURE;
_CRTIMP __cdecl __MINGW_NOTHROW char *strstr (const char *, const char *) __MINGW_ATTRIB_PURE;
_CRTIMP __cdecl __MINGW_NOTHROW char *strtok (char *, const char *);
_CRTIMP __cdecl __MINGW_NOTHROW size_t strxfrm (char *, const char *, size_t);
#ifndef __STRICT_ANSI__
/* Extra non-ANSI functions provided by the CRTDLL library
*/
_CRTIMP __cdecl __MINGW_NOTHROW char *_strerror (const char *);
_CRTIMP __cdecl __MINGW_NOTHROW void *_memccpy (void *, const void *, int, size_t);
_CRTIMP __cdecl __MINGW_NOTHROW int _memicmp (const void *, const void *, size_t);
_CRTIMP __cdecl __MINGW_NOTHROW char *_strdup (const char *) __MINGW_ATTRIB_MALLOC;
_CRTIMP __cdecl __MINGW_NOTHROW int _strcmpi (const char *, const char *);
_CRTIMP __cdecl __MINGW_NOTHROW int _stricoll (const char *, const char *);
_CRTIMP __cdecl __MINGW_NOTHROW char *_strlwr (char *);
_CRTIMP __cdecl __MINGW_NOTHROW char *_strnset (char *, int, size_t);
_CRTIMP __cdecl __MINGW_NOTHROW char *_strrev (char *);
_CRTIMP __cdecl __MINGW_NOTHROW char *_strset (char *, int);
_CRTIMP __cdecl __MINGW_NOTHROW char *_strupr (char *);
_CRTIMP __cdecl __MINGW_NOTHROW void _swab (const char *, char *, size_t);
#if !_EMULATE_GLIBC
/* MSVC's non-ANSI _stricmp() and _strnicmp() functions must also be
* prototyped here, but we need to share them with <strings.h>, where
* we declare their POSIX strcasecmp() and strncasecmp() equivalents;
* get the requisite prototypes by selective <strings.h> inclusion,
* (noting that we've already done so, if emulating glibc, but if not,
* we use quoted inclusion now, to ensure that we get our "strings.h",
* which is equipped to support __STRING_H_SOURCED__ filtering).
*/
#include "strings.h"
#endif
# ifdef __MSVCRT__
/* These were not present in the CRTDLL prior to the first release of
* MSVCRT.DLL, but are available in all versions of that library.
*/
_CRTIMP __cdecl __MINGW_NOTHROW int _strncoll(const char *, const char *, size_t);
_CRTIMP __cdecl __MINGW_NOTHROW int _strnicoll(const char *, const char *, size_t);
# endif
# ifndef _NO_OLDNAMES
/* Non-underscore decorated versions of non-ANSI functions. They live in the
* OLDNAMES libraries, whence they provide a little extra portability.
*/
_CRTIMP __cdecl __MINGW_NOTHROW void *memccpy (void *, const void *, int, size_t);
_CRTIMP __cdecl __MINGW_NOTHROW int memicmp (const void *, const void *, size_t);
_CRTIMP __cdecl __MINGW_NOTHROW char *strdup (const char *) __MINGW_ATTRIB_MALLOC;
_CRTIMP __cdecl __MINGW_NOTHROW int strcmpi (const char *, const char *);
_CRTIMP __cdecl __MINGW_NOTHROW int stricmp (const char *, const char *);
_CRTIMP __cdecl __MINGW_NOTHROW int stricoll (const char *, const char *);
_CRTIMP __cdecl __MINGW_NOTHROW char *strlwr (char *);
_CRTIMP __cdecl __MINGW_NOTHROW int strnicmp (const char *, const char *, size_t);
_CRTIMP __cdecl __MINGW_NOTHROW char *strnset (char *, int, size_t);
_CRTIMP __cdecl __MINGW_NOTHROW char *strrev (char *);
_CRTIMP __cdecl __MINGW_NOTHROW char *strset (char *, int);
_CRTIMP __cdecl __MINGW_NOTHROW char *strupr (char *);
# ifndef _UWIN
/* FIXME: Do we really care that UWin doesn't support this? We are
* under no obligation to support UWin.
*/
_CRTIMP __cdecl __MINGW_NOTHROW void swab (const char *, char *, size_t);
# endif /* ! _UWIN */
# endif /* ! _NO_OLDNAMES */
/* MSVC also expects <string.h> to declare duplicates of the wchar_t
* string functions which are nominally declared in <wchar.h>, (which
* is where ISO-C specifies that they should be declared). For the
* convenience of applications which rely on this Microsoft anomaly,
* inclusion of <wchar.h>, within the current __STRING_H_SOURCED__
* scope, will selectively expose the required function prototypes;
* however, strictly ISO-C conforming applications should include
* <wchar.h> directly; they should not rely on this MSVC specific
* anomalous behaviour. (We use the quoted form of inclusion here,
* to ensure that we get our own "wchar.h", and not any predecessor
* which may have been insinuated into the system include path, and
* so could interfere with our mechanism for partial inclusion of
* shared header content).
*/
#include "wchar.h"
#endif /* ! __STRICT_ANSI__ */
#if _POSIX_C_SOURCE >= 200809L
#if __MSVCRT_VERSION__ >= __MSVCR80_DLL
/* MSVCR80.DLL adds a (mostly) POSIX.1-2008 conforming strnlen(); (it's
* also available in MSVCRT.DLL from _WIN32_WINNT_VISTA onwards, but we
* pretend otherwise, since recent GCC will try to use the function when
* it can be found in libmsvcrt.a, so breaking it for use on WinXP and
* earlier).
*/
_CRTIMP __cdecl __MINGW_NOTHROW char *strnlen (const char *, size_t);
#else /* MSVCRT.DLL || pre-MSVCR80.DLL */
/* Emulation, to support recent POSIX.1; we prefer this for ALL versions
* of MSVCRT.DLL, (even those which already provide strnlen()); to avoid
* the GCC breakage noted above. (Note that we implement strnlen() with
* the alternative external name, __mingw_strnlen() in libmingwex.a, to
* avoid possible link time collision with MSVCR80.DLL's implementation,
* then map this to strnlen() via a __CRT_ALIAS, with stubs designated
* for linking from within the appropriate oldname libraries.
*/
extern size_t __mingw_strnlen (const char *, size_t);
__JMPSTUB__(( LIB=coldname; FUNCTION=strnlen ))
__CRT_ALIAS size_t strnlen (const char *__text, size_t __maxlen)
{ return __mingw_strnlen (__text, __maxlen); }
#endif /* MSVCRT.DLL || pre-MSVCR80.DLL */
#endif /* _POSIX_C_SOURCE >= 200809L */
#if _POSIX_C_SOURCE >= 199506L /* SUSv2 */
/* SUSv2 added a re-entrant variant of strtok(), which maintains state
* using a user supplied reference pointer, rather than the internal
* reference used by strtok() itself, thus making it both thread-safe,
* and suitable for interleaved use on multiple strings, even within a
* single thread context, (which isn't possible with strtok() itself,
* even with Microsoft's intrinsically thread-safe implementation).
*/
extern char *strtok_r
(char *__restrict__, const char *__restrict__, char **__restrict__);
#if _POSIX_C_SOURCE >= 200112L
/* POSIX.1-2001 added a re-entrant variant of strerror(), which stores
* the message text in a user supplied buffer, rather than in (possibly
* volatile) system supplied storage. Although inherently thread-safe,
* Microsoft's strerror() also uses a potentially volatile buffer, (in
* the sense that it is overwritten by successive calls within a single
* thread); thus, we provide our own implementation of POSIX.1-2001's
* strerror_r() function, to facilitate the return of non-volatile
* copies of strerror()'s message text.
*/
extern int strerror_r (int, char *, size_t);
#endif /* POSIX.1-2001 */
#endif /* SUSv2 */
#if __MSVCRT_VERSION__>=__MSVCR80_DLL || _WIN32_WINNT >= _WIN32_WINNT_VISTA
/* MSVCR80.DLL introduced a safer, (erroneously so called "more secure"),
* alternative to strerror(), named strerror_s(); it was later retrofitted
* to MSVCRT.DLL, from the release of Windows-Vista onwards.
*/
_CRTIMP __cdecl __MINGW_NOTHROW int strerror_s (char *, size_t, int);
/* Also introduced in MSVCR80.DLL, and retrofitted to MSVCRT.DLL from the
* release of Windows-Vista, strtok_s() is a direct analogue for POSIX.1's
* strtok_r() function; (contrary to Microsoft's description, it is neither
* a "more secure", nor even a "safer" version of strtok() itself).
*/
_CRTIMP __cdecl __MINGW_NOTHROW char *strtok_s (char *, const char *, char **);
#elif _POSIX_C_SOURCE >= 200112L
/* For the benefit of pre-Vista MSVCRT.DLL users, we provide an approximate
* emulation of strerror_s(), in terms of inline referral to POSIX.1-2001's
* strerror_r() function.
*/
__CRT_ALIAS int strerror_s (char *__buf, size_t __len, int __err)
{ return strerror_r (__err, __buf, __len); }
#endif
#undef __STRING_H_SOURCED__
_END_C_DECLS
#endif /* ! RC_INVOKED */
#endif /* !_STRING_H: $RCSfile: string.h,v $: end of file */
