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wxWidgets/include/wx/wxcrtbase.h

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/*
* Name: wx/wxcrtbase.h
* Purpose: Type-safe ANSI and Unicode builds compatible wrappers for
* CRT functions
* Author: Joel Farley, Ove K<>ven
* Modified by: Vadim Zeitlin, Robert Roebling, Ron Lee
* Created: 1998/06/12
* RCS-ID: $Id$
* Copyright: (c) 1998-2006 wxWidgets dev team
* Licence: wxWindows licence
*/
/* THIS IS A C FILE, DON'T USE C++ FEATURES (IN PARTICULAR COMMENTS) IN IT */
#ifndef _WX_WXCRTBASE_H_
#define _WX_WXCRTBASE_H_
/* -------------------------------------------------------------------------
headers and missing declarations
------------------------------------------------------------------------- */
#include "wx/chartype.h"
/*
Standard headers we need here.
NB: don't include any wxWidgets headers here because almost all of them
include this one!
*/
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <wctype.h>
#include <time.h>
#if defined(__WINDOWS__) && !defined(__WXWINCE__)
#include <io.h>
#endif
#if defined(HAVE_STRTOK_R) && defined(__DARWIN__) && defined(_MSL_USING_MW_C_HEADERS) && _MSL_USING_MW_C_HEADERS
char *strtok_r(char *, const char *, char **);
#endif
/*
a few compilers don't have the (non standard but common) isascii function,
define it ourselves for them
*/
#ifndef isascii
#if defined(__MWERKS__)
#define wxNEED_ISASCII
#elif defined(_WIN32_WCE)
#if _WIN32_WCE <= 211
#define wxNEED_ISASCII
#endif
#endif
#endif /* isascii */
#ifdef wxNEED_ISASCII
inline int isascii(int c) { return (unsigned)c < 0x80; }
#endif
#ifdef _WIN32_WCE
#if _WIN32_WCE <= 211
#define isspace(c) ((c) == _T(' ') || (c) == _T('\t'))
#endif
#endif /* _WIN32_WCE */
/* string.h functions */
#ifndef strdup
#if defined(__MWERKS__) && !defined(__MACH__) && (__MSL__ < 0x00008000)
#define wxNEED_STRDUP
#elif defined(__WXWINCE__)
#if _WIN32_WCE <= 211
#define wxNEED_STRDUP
#endif
#endif
#endif /* strdup */
#ifdef wxNEED_STRDUP
WXDLLIMPEXP_BASE char *strdup(const char* s);
#endif
/* missing functions in some WinCE versions */
#ifdef _WIN32_WCE
#if (_WIN32_WCE < 300)
WXDLLIMPEXP_BASE void *calloc( size_t num, size_t size );
#endif
#endif /* _WIN32_WCE */
#if defined(__MWERKS__)
/* Metrowerks only has wide char support for OS X >= 10.3 */
#if !defined(__DARWIN__) || \
(MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_3)
#define wxHAVE_MWERKS_UNICODE
#endif
#ifdef wxHAVE_MWERKS_UNICODE
#define HAVE_WPRINTF 1
#define HAVE_WCSRTOMBS 1
#define HAVE_VSWPRINTF 1
#endif
#endif /* __MWERKS__ */
/* -------------------------------------------------------------------------
UTF-8 locale handling
------------------------------------------------------------------------- */
#ifdef __cplusplus
#if wxUSE_UNICODE_UTF8
/* flag indicating whether the current locale uses UTF-8 or not; must be
updated every time the locale is changed! */
#if wxUSE_UTF8_LOCALE_ONLY
#define wxLocaleIsUtf8 true
#else
extern WXDLLIMPEXP_BASE bool wxLocaleIsUtf8;
#endif
/* function used to update the flag: */
extern WXDLLIMPEXP_BASE void wxUpdateLocaleIsUtf8();
#else /* !wxUSE_UNICODE_UTF8 */
inline void wxUpdateLocaleIsUtf8() {}
#endif /* wxUSE_UNICODE_UTF8/!wxUSE_UNICODE_UTF8 */
#endif /* __cplusplus */
/* -------------------------------------------------------------------------
string.h
------------------------------------------------------------------------- */
#define wxCRT_StrcatA strcat
#define wxCRT_StrchrA strchr
#define wxCRT_StrcmpA strcmp
#define wxCRT_StrcpyA strcpy
#define wxCRT_StrcspnA strcspn
#define wxCRT_StrlenA strlen
#define wxCRT_StrncatA strncat
#define wxCRT_StrncmpA strncmp
#define wxCRT_StrncpyA strncpy
#define wxCRT_StrpbrkA strpbrk
#define wxCRT_StrrchrA strrchr
#define wxCRT_StrspnA strspn
#define wxCRT_StrstrA strstr
#define wxCRT_StrcatW wcscat
#define wxCRT_StrchrW wcschr
#define wxCRT_StrcmpW wcscmp
#define wxCRT_StrcpyW wcscpy
#define wxCRT_StrcspnW wcscspn
#define wxCRT_StrncatW wcsncat
#define wxCRT_StrncmpW wcsncmp
#define wxCRT_StrncpyW wcsncpy
#define wxCRT_StrpbrkW wcspbrk
#define wxCRT_StrrchrW wcsrchr
#define wxCRT_StrspnW wcsspn
#define wxCRT_StrstrW wcsstr
/* these functions are not defined under CE, at least in VC8 CRT */
#ifndef __WXWINCE__
#define wxCRT_StrcollA strcoll
#define wxCRT_StrxfrmA strxfrm
#define wxCRT_StrcollW wcscoll
#define wxCRT_StrxfrmW wcsxfrm
#endif /* __WXWINCE__ */
/* Almost all compiler have strdup(), but not quite all: CodeWarrior under
Mac and VC++ for Windows CE don't provide it; additionally, gcc under
Mac and OpenVMS do not have wcsdup: */
#if defined(__VISUALC__) && __VISUALC__ >= 1400
#define wxCRT_StrdupA _strdup
#elif !(defined(__MWERKS__) && defined(__WXMAC__)) && !defined(__WXWINCE__)
#define wxCRT_StrdupA strdup
#endif
#if defined(__WINDOWS__)
#define wxCRT_StrdupW _wcsdup
#elif defined(HAVE_WCSDUP)
#define wxCRT_StrdupW wcsdup
#endif
#ifdef wxHAVE_TCHAR_SUPPORT
/* we surely have wchar_t if we have TCHAR have wcslen() */
#ifndef HAVE_WCSLEN
#define HAVE_WCSLEN
#endif
#endif /* wxHAVE_TCHAR_SUPPORT */
#ifdef HAVE_WCSLEN
#define wxCRT_StrlenW wcslen
#endif
#define wxCRT_StrtodA strtod
#define wxCRT_StrtolA strtol
#define wxCRT_StrtoulA strtoul
#define wxCRT_StrtodW wcstod
#define wxCRT_StrtolW wcstol
#define wxCRT_StrtoulW wcstoul
#ifdef __VISUALC__
#if __VISUALC__ >= 1300 && !defined(__WXWINCE__)
#define wxCRT_StrtollA _strtoi64
#define wxCRT_StrtoullA _strtoui64
#define wxCRT_StrtollW _wcstoi64
#define wxCRT_StrtoullW _wcstoui64
#endif /* VC++ 7+ */
#else
#ifdef HAVE_STRTOULL
#define wxCRT_StrtollA strtoll
#define wxCRT_StrtoullA strtoull
#endif /* HAVE_STRTOULL */
#ifdef HAVE_WCSTOULL
/* assume that we have wcstoull(), which is also C99, too */
#define wxCRT_StrtollW wcstoll
#define wxCRT_StrtoullW wcstoull
#endif /* HAVE_WCSTOULL */
#endif
/* define wxCRT_StricmpA/W and wxCRT_StrnicmpA/W for various compilers */
/* note that we definitely are going to need our own version for widechar
* versions */
#if !defined(wxCRT_StricmpA)
#if defined(__BORLANDC__) || defined(__WATCOMC__) || \
defined(__SALFORDC__) || defined(__VISAGECPP__) || \
defined(__EMX__) || defined(__DJGPP__)
#define wxCRT_StricmpA stricmp
#define wxCRT_StrnicmpA strnicmp
#elif defined(__WXPALMOS__)
/* FIXME: There is no equivalent to strnicmp in the Palm OS API. This
* quick hack should do until one can be written.
*/
#define wxCRT_StricmpA StrCaselessCompare
#define wxCRT_StrnicmpA strnicmp
#elif defined(__SYMANTEC__) || defined(__VISUALC__) || \
(defined(__MWERKS__) && defined(__INTEL__))
#define wxCRT_StricmpA _stricmp
#define wxCRT_StrnicmpA _strnicmp
#elif defined(__UNIX__) || defined(__GNUWIN32__)
#define wxCRT_StricmpA strcasecmp
#define wxCRT_StrnicmpA strncasecmp
/* #else -- use wxWidgets implementation */
#endif
#endif /* !defined(wxCRT_StricmpA) */
/* FIXME-UTF8: use wcs(n)casecmp if available for *W versions */
#ifdef HAVE_STRTOK_R
#define wxCRT_StrtokA(str, sep, last) strtok_r(str, sep, last)
#endif
/* FIXME-UTF8: detect and use wcstok() if available for wxCRT_StrtokW */
/* these are extern "C" because they are used by regex lib: */
#ifdef __cplusplus
extern "C" {
#endif
#ifndef wxCRT_StrlenW
WXDLLIMPEXP_BASE size_t wxCRT_StrlenW(const wchar_t *s);
#endif
#ifndef wxCRT_StrncmpW
WXDLLIMPEXP_BASE int wxCRT_StrncmpW(const wchar_t *s1, const wchar_t *s2, size_t n);
#endif
#ifdef __cplusplus
}
#endif
/* FIXME-UTF8: remove this once we are Unicode only */
#if wxUSE_UNICODE
#define wxCRT_StrlenNative wxCRT_StrlenW
#define wxCRT_StrncmpNative wxCRT_StrncmpW
#define wxCRT_ToupperNative wxCRT_ToupperW
#define wxCRT_TolowerNative wxCRT_TolowerW
#else
#define wxCRT_StrlenNative wxCRT_StrlenA
#define wxCRT_StrncmpNative wxCRT_StrncmpA
#define wxCRT_ToupperNative toupper
#define wxCRT_TolowerNative tolower
#endif
#ifndef wxCRT_StrcatW
WXDLLIMPEXP_BASE wchar_t *wxCRT_StrcatW(wchar_t *dest, const wchar_t *src);
#endif
#ifndef wxCRT_StrchrW
WXDLLIMPEXP_BASE const wchar_t *wxCRT_StrchrW(const wchar_t *s, wchar_t c);
#endif
#ifndef wxCRT_StrcmpW
WXDLLIMPEXP_BASE int wxCRT_StrcmpW(const wchar_t *s1, const wchar_t *s2);
#endif
#ifndef wxCRT_StrcollW
WXDLLIMPEXP_BASE int wxCRT_StrcollW(const wchar_t *s1, const wchar_t *s2);
#endif
#ifndef wxCRT_StrcpyW
WXDLLIMPEXP_BASE wchar_t *wxCRT_StrcpyW(wchar_t *dest, const wchar_t *src);
#endif
#ifndef wxCRT_StrcspnW
WXDLLIMPEXP_BASE size_t wxCRT_StrcspnW(const wchar_t *s, const wchar_t *reject);
#endif
#ifndef wxCRT_StrncatW
WXDLLIMPEXP_BASE wchar_t *wxCRT_StrncatW(wchar_t *dest, const wchar_t *src, size_t n);
#endif
#ifndef wxCRT_StrncpyW
WXDLLIMPEXP_BASE wchar_t *wxCRT_StrncpyW(wchar_t *dest, const wchar_t *src, size_t n);
#endif
#ifndef wxCRT_StrpbrkW
WXDLLIMPEXP_BASE const wchar_t *wxCRT_StrpbrkW(const wchar_t *s, const wchar_t *accept);
#endif
#ifndef wxCRT_StrrchrW
WXDLLIMPEXP_BASE const wchar_t *wxCRT_StrrchrW(const wchar_t *s, wchar_t c);
#endif
#ifndef wxCRT_StrspnW
WXDLLIMPEXP_BASE size_t wxCRT_StrspnW(const wchar_t *s, const wchar_t *accept);
#endif
#ifndef wxCRT_StrstrW
WXDLLIMPEXP_BASE const wchar_t *wxCRT_StrstrW(const wchar_t *haystack, const wchar_t *needle);
#endif
#ifndef wxCRT_StrtodW
WXDLLIMPEXP_BASE double wxCRT_StrtodW(const wchar_t *nptr, wchar_t **endptr);
#endif
#ifndef wxCRT_StrtolW
WXDLLIMPEXP_BASE long int wxCRT_StrtolW(const wchar_t *nptr, wchar_t **endptr, int base);
#endif
#ifndef wxCRT_StrtoulW
WXDLLIMPEXP_BASE unsigned long int wxCRT_StrtoulW(const wchar_t *nptr, wchar_t **endptr, int base);
#endif
#ifndef wxCRT_StrxfrmW
WXDLLIMPEXP_BASE size_t wxCRT_StrxfrmW(wchar_t *dest, const wchar_t *src, size_t n);
#endif
#ifndef wxCRT_StrdupA
WXDLLIMPEXP_BASE char *wxCRT_StrdupA(const char *psz);
#endif
#ifndef wxCRT_StrdupW
WXDLLIMPEXP_BASE wchar_t *wxCRT_StrdupW(const wchar_t *pwz);
#endif
#ifndef wxCRT_StricmpA
WXDLLIMPEXP_BASE int wxCRT_StricmpA(const char *psz1, const char *psz2);
#endif
#ifndef wxCRT_StricmpW
WXDLLIMPEXP_BASE int wxCRT_StricmpW(const wchar_t *psz1, const wchar_t *psz2);
#endif
#ifndef wxCRT_StrnicmpA
WXDLLIMPEXP_BASE int wxCRT_StrnicmpA(const char *psz1, const char *psz2, size_t len);
#endif
#ifndef wxCRT_StrnicmpW
WXDLLIMPEXP_BASE int wxCRT_StrnicmpW(const wchar_t *psz1, const wchar_t *psz2, size_t len);
#endif
#ifndef wxCRT_StrtokA
WXDLLIMPEXP_BASE char *wxCRT_StrtokA(char *psz, const char *delim, char **save_ptr);
#endif
#ifndef wxCRT_StrtokW
WXDLLIMPEXP_BASE wchar_t *wxCRT_StrtokW(wchar_t *psz, const wchar_t *delim, wchar_t **save_ptr);
#endif
/* supply strtoll and strtoull, if needed */
#ifdef wxLongLong_t
#ifndef wxCRT_StrtollA
WXDLLIMPEXP_BASE wxLongLong_t wxCRT_StrtollA(const char* nptr,
char** endptr,
int base);
WXDLLIMPEXP_BASE wxULongLong_t wxCRT_StrtoullA(const char* nptr,
char** endptr,
int base);
#endif
#ifndef wxCRT_StrtollW
WXDLLIMPEXP_BASE wxLongLong_t wxCRT_StrtollW(const wchar_t* nptr,
wchar_t** endptr,
int base);
WXDLLIMPEXP_BASE wxULongLong_t wxCRT_StrtoullW(const wchar_t* nptr,
wchar_t** endptr,
int base);
#endif
#endif // wxLongLong_t
/* -------------------------------------------------------------------------
stdio.h
------------------------------------------------------------------------- */
#if defined(__UNIX__) || defined(__WXMAC__)
#define wxMBFILES 1
#else
#define wxMBFILES 0
#endif
/* these functions are only needed in the form used for filenames (i.e. char*
on Unix, wchar_t* on Windows), so we don't need to use A/W suffix: */
#if wxMBFILES || !wxUSE_UNICODE /* ANSI filenames */
#define wxCRT_Fopen fopen
#define wxCRT_Freopen freopen
#define wxCRT_Remove remove
#define wxCRT_Rename rename
#else /* Unicode filenames */
/* special case: these functions are missing under Win9x with Unicows so we
have to implement them ourselves */
#if wxUSE_UNICODE_MSLU
WXDLLIMPEXP_BASE FILE* wxMSLU__wfopen(const wchar_t *name, const wchar_t *mode);
WXDLLIMPEXP_BASE FILE* wxMSLU__wfreopen(const wchar_t *name, const wchar_t *mode, FILE *stream);
WXDLLIMPEXP_BASE int wxMSLU__wrename(const wchar_t *oldname, const wchar_t *newname);
WXDLLIMPEXP_BASE int wxMSLU__wremove(const wchar_t *name);
#define wxCRT_Fopen wxMSLU__wfopen
#define wxCRT_Freopen wxMSLU__wfreopen
#define wxCRT_Remove wxMSLU__wremove
#define wxCRT_Rename wxMSLU__wrename
#else
/* WinCE CRT doesn't provide these functions so use our own */
#ifdef __WXWINCE__
WXDLLIMPEXP_BASE int wxCRT_Rename(const wchar_t *src,
const wchar_t *dst);
WXDLLIMPEXP_BASE int wxCRT_Remove(const wchar_t *path);
#else
#define wxCRT_Rename _wrename
#define wxCRT_Remove _wremove
#endif
#define wxCRT_Fopen _wfopen
#define wxCRT_Freopen _wfreopen
#endif
#endif /* wxMBFILES/!wxMBFILES */
#define wxCRT_PutsA puts
#define wxCRT_FputsA fputs
#define wxCRT_FgetsA fgets
#define wxCRT_FputcA fputc
#define wxCRT_FgetcA fgetc
#define wxCRT_UngetcA ungetc
#ifdef wxHAVE_TCHAR_SUPPORT
#define wxCRT_PutsW _putws
#define wxCRT_FputsW fputws
#define wxCRT_FputcW fputwc
#endif
#ifdef HAVE_FPUTWS
#define wxCRT_FputsW fputws
#endif
#ifdef HAVE_PUTWS
#define wxCRT_PutsW putws
#endif
#ifdef HAVE_FPUTWC
#define wxCRT_FputcW fputwc
#endif
#define wxCRT_FgetsW fgetws
#ifndef wxCRT_PutsW
WXDLLIMPEXP_BASE int wxCRT_PutsW(const wchar_t *ws);
#endif
#ifndef wxCRT_FputsW
WXDLLIMPEXP_BASE int wxCRT_FputsW(const wchar_t *ch, FILE *stream);
#endif
#ifndef wxCRT_FputcW
WXDLLIMPEXP_BASE int wxCRT_FputcW(wchar_t wc, FILE *stream);
#endif
/*
NB: tmpnam() is unsafe and thus is not wrapped!
Use other wxWidgets facilities instead:
wxFileName::CreateTempFileName, wxTempFile, or wxTempFileOutputStream
*/
#define wxTmpnam(x) wxTmpnam_is_insecure_use_wxTempFile_instead
/* FIXME-CE: provide our own perror() using ::GetLastError() */
#ifndef __WXWINCE__
#define wxCRT_PerrorA perror
#ifdef wxHAVE_TCHAR_SUPPORT
#define wxCRT_PerrorW _wperror
#endif
#endif /* !__WXWINCE__ */
/* -------------------------------------------------------------------------
stdlib.h
------------------------------------------------------------------------- */
/* there are no env vars at all under CE, so no _tgetenv neither */
#ifdef __WXWINCE__
/* can't define as inline function as this is a C file... */
#define wxCRT_GetenvA(name) (name, NULL)
#define wxCRT_GetenvW(name) (name, NULL)
#else
#define wxCRT_GetenvA getenv
#ifdef _tgetenv
#define wxCRT_GetenvW _wgetenv
#endif
#endif
#ifndef wxCRT_GetenvW
WXDLLIMPEXP_BASE wchar_t * wxCRT_GetenvW(const wchar_t *name);
#endif
#define wxCRT_SystemA system
/* mingw32 doesn't provide _tsystem() or _wsystem(): */
#if defined(_tsystem)
#define wxCRT_SystemW _wsystem
#endif
#define wxCRT_AtofA atof
#define wxCRT_AtoiA atoi
#define wxCRT_AtolA atol
#if defined(__MWERKS__)
#if defined(__MSL__)
#define wxCRT_AtofW watof
#define wxCRT_AtoiW watoi
#define wxCRT_AtolW watol
/* else: use ANSI versions */
#endif
#elif defined(wxHAVE_TCHAR_SUPPORT)
#define wxCRT_AtoiW _wtoi
#define wxCRT_AtolW _wtol
/* _wtof doesn't exist */
#else
#ifndef __VMS
#define wxCRT_AtofW(s) wcstof(s, NULL)
#endif
#define wxCRT_AtolW(s) wcstol(s, NULL, 10)
/* wcstoi doesn't exist */
#endif
/*
There are 2 unrelated problems with these functions under Mac:
a) Metrowerks MSL CRT implements them strictly in C99 sense and
doesn't support (very common) extension of allowing to call
mbstowcs(NULL, ...) which makes it pretty useless as you can't
know the size of the needed buffer
b) OS X <= 10.2 declares and even defined these functions but
doesn't really implement them -- they always return an error
So use our own replacements in both cases.
*/
#if defined(__MWERKS__) && defined(__MSL__)
#define wxNEED_WX_MBSTOWCS
#endif
#ifdef __DARWIN__
#if MAC_OS_X_VERSION_MAX_ALLOWED <= MAC_OS_X_VERSION_10_2
#define wxNEED_WX_MBSTOWCS
#endif
#endif
#ifdef wxNEED_WX_MBSTOWCS
/* even though they are defined and "implemented", they are bad and just
stubs so we need our own - we need these even in ANSI builds!! */
WXDLLIMPEXP_BASE size_t wxMbstowcs(wchar_t *, const char *, size_t);
WXDLLIMPEXP_BASE size_t wxWcstombs(char *, const wchar_t *, size_t);
#else
#define wxMbstowcs mbstowcs
#define wxWcstombs wcstombs
#endif
/* -------------------------------------------------------------------------
time.h
------------------------------------------------------------------------- */
#define wxCRT_StrftimeA strftime
/* FIXME-UTF8: when is this available? */
#define wxCRT_StrftimeW wcsftime
#ifndef wxCRT_StrftimeW
WXDLLIMPEXP_BASE size_t wxCRT_StrftimeW(wchar_t *s, size_t max,
const wchar_t *fmt,
const struct tm *tm);
#endif
/* -------------------------------------------------------------------------
ctype.h
------------------------------------------------------------------------- */
#ifdef __WATCOMC__
#define WXWCHAR_T_CAST(c) (wint_t)(c)
#else
#define WXWCHAR_T_CAST(c) c
#endif
#define wxCRT_IsalnumW(c) iswalnum(WXWCHAR_T_CAST(c))
#define wxCRT_IsalphaW(c) iswalpha(WXWCHAR_T_CAST(c))
#define wxCRT_IscntrlW(c) iswcntrl(WXWCHAR_T_CAST(c))
#define wxCRT_IsdigitW(c) iswdigit(WXWCHAR_T_CAST(c))
#define wxCRT_IsgraphW(c) iswgraph(WXWCHAR_T_CAST(c))
#define wxCRT_IslowerW(c) iswlower(WXWCHAR_T_CAST(c))
#define wxCRT_IsprintW(c) iswprint(WXWCHAR_T_CAST(c))
#define wxCRT_IspunctW(c) iswpunct(WXWCHAR_T_CAST(c))
#define wxCRT_IsspaceW(c) iswspace(WXWCHAR_T_CAST(c))
#define wxCRT_IsupperW(c) iswupper(WXWCHAR_T_CAST(c))
#define wxCRT_IsxdigitW(c) iswxdigit(WXWCHAR_T_CAST(c))
#ifdef __GLIBC__
#if defined(__GLIBC__) && (__GLIBC__ == 2) && (__GLIBC_MINOR__ == 0)
/* /usr/include/wctype.h incorrectly declares translations */
/* tables which provokes tons of compile-time warnings -- try */
/* to correct this */
#define wxCRT_TolowerW(wc) towctrans((wc), (wctrans_t)__ctype_tolower)
#define wxCRT_ToupperW(wc) towctrans((wc), (wctrans_t)__ctype_toupper)
#else /* !glibc 2.0 */
#define wxCRT_TolowerW towlower
#define wxCRT_ToupperW towupper
#endif
#else /* !__GLIBC__ */
/* There is a bug in VC6 C RTL: toxxx() functions dosn't do anything
with signed chars < 0, so "fix" it here. */
#define wxCRT_TolowerW(c) towlower((wxUChar)(wxChar)(c))
#define wxCRT_ToupperW(c) towupper((wxUChar)(wxChar)(c))
#endif /* __GLIBC__/!__GLIBC__ */
/* -------------------------------------------------------------------------
wx wrappers for CRT functions in both char* and wchar_t* versions
------------------------------------------------------------------------- */
#ifdef __cplusplus
/* NB: this belongs to wxcrt.h and not this header, but it makes life easier
* for buffer.h and stringimpl.h (both of which must be included before
* string.h, which is required by wxcrt.h) to have them here: */
/* safe version of strlen() (returns 0 if passed NULL pointer) */
inline size_t wxStrlen(const char *s) { return s ? wxCRT_StrlenA(s) : 0; }
inline size_t wxStrlen(const wchar_t *s) { return s ? wxCRT_StrlenW(s) : 0; }
#define wxWcslen wxCRT_StrlenW
#define wxStrdupA wxCRT_StrdupA
#define wxStrdupW wxCRT_StrdupW
inline char* wxStrdup(const char *s) { return wxCRT_StrdupA(s); }
inline wchar_t* wxStrdup(const wchar_t *s) { return wxCRT_StrdupW(s); }
#endif /* __cplusplus */
#endif /* _WX_WXCRTBASE_H_ */
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