wxchar.h

来自「A*算法 A*算法 A*算法 A*算法A*算法A*算法」· C头文件 代码 · 共 1,259 行 · 第 1/3 页

/*
 * Name:        wx/wxchar.h
 * Purpose:     Declarations common to wx char/wchar_t usage (wide chars)
 * Author:      Joel Farley, Ove K鍁en
 * Modified by: Vadim Zeitlin, Robert Roebling, Ron Lee
 * Created:     1998/06/12
 * RCS-ID:      $Id: wxchar.h,v 1.180.2.6 2006/03/17 14:23:35 SC Exp $
 * Copyright:   (c) 1998-2002 Joel Farley, Ove K鍁en, Robert Roebling, Ron Lee
 * Licence:     wxWindows licence
 */

/* THIS IS A C FILE, DON'T USE C++ FEATURES (IN PARTICULAR COMMENTS) IN IT */

#ifndef _WX_WXCHAR_H_
#define _WX_WXCHAR_H_

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
    #pragma interface "wxchar.h"
#endif

/* defs.h indirectly includes this file, so don't include it here */
#include "wx/platform.h"
#include "wx/dlimpexp.h"

#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

/* check whether we have wchar_t and which size it is if we do */
#if !defined(wxUSE_WCHAR_T)
    #if defined(__UNIX__)
        #if defined(HAVE_WCSTR_H) || defined(HAVE_WCHAR_H) || defined(__FreeBSD__) || defined(__DARWIN__)
            #define wxUSE_WCHAR_T 1
        #else
            #define wxUSE_WCHAR_T 0
        #endif
    #elif defined(__GNUWIN32__) && !defined(__MINGW32__)
        #define wxUSE_WCHAR_T 0
    #elif defined(__WATCOMC__)
        #define wxUSE_WCHAR_T 0
    #elif defined(__VISAGECPP__) && (__IBMCPP__ < 400)
        #define wxUSE_WCHAR_T 0
    #else
        /* add additional compiler checks if this fails */
        #define wxUSE_WCHAR_T 1
    #endif
#endif /* !defined(wxUSE_WCHAR_T) */

/* Unicode support requires wchar_t */
#if wxUSE_UNICODE && !wxUSE_WCHAR_T
    #error "wchar_t must be available in Unicode build"
#endif /* Unicode */

/*
    Standard headers we need here.

    NB: don't include any wxWidgets headers here because almost all of them include
        this one!
 */

/* Required for wxPrintf() etc */
#include <stdarg.h>

/* Almost all compiler have strdup(), but not quite all: CodeWarrior under Mac */
/* and VC++ for Windows CE don't provide it */
#if defined(__VISUALC__) && __VISUALC__ >= 1400
    #define wxStrdupA _strdup
#elif !(defined(__MWERKS__) && defined(__WXMAC__)) && !defined(__WXWINCE__)
    /* use #define, not inline wrapper, as it is tested with #ifndef below */
    #define wxStrdupA strdup
#endif

/*
   non Unix compilers which do have wchar.h (but not tchar.h which is included
   below and which includes wchar.h anyhow).

   Actually MinGW has tchar.h, but it does not include wchar.h
 */
#if defined(__MWERKS__) || defined(__VISAGECPP__) || defined(__MINGW32__) || defined(__WATCOMC__)
    #ifndef HAVE_WCHAR_H
        #define HAVE_WCHAR_H
    #endif
#endif
#if defined(__MWERKS__) && !defined(__MACH__)
    #ifndef HAVE_WCSLEN
        #define HAVE_WCSLEN
    #endif
#endif

#if wxUSE_WCHAR_T
    #ifdef HAVE_WCHAR_H
        /* the current (as of Nov 2002) version of cygwin has a bug in its */
        /* wchar.h -- there is no extern "C" around the declarations in it and */
        /* this results in linking errors later; also, at least on some */
        /* Cygwin versions, wchar.h requires sys/types.h */
        #ifdef __CYGWIN__
            #include <sys/types.h>
            #ifdef __cplusplus
                extern "C" {
            #endif
        #endif /* Cygwin */

        #include <wchar.h>

        #if defined(__CYGWIN__) && defined(__cplusplus)
            }
        #endif /* Cygwin and C++ */

    #elif defined(HAVE_WCSTR_H)
        /* old compilers have relevant declarations here */
        #include <wcstr.h>
    #elif defined(__FreeBSD__) || defined(__DARWIN__) || defined(__EMX__)
        /* include stdlib.h for wchar_t */
        #include <stdlib.h>
    #endif /* HAVE_WCHAR_H */
#endif /* wxUSE_WCHAR_T */

/* ---------------------------------------------------------------------------- */
/* define wxHAVE_TCHAR_SUPPORT for the compilers which support the TCHAR type */
/* mapped to either char or wchar_t depending on the ASCII/Unicode mode and have */
/* the function mapping _tfoo() -> foo() or wfoo() */
/* ---------------------------------------------------------------------------- */

/* VC++ and BC++ starting with 5.2 have TCHAR support */
#ifdef __VISUALC__
    #define wxHAVE_TCHAR_SUPPORT
#elif defined(__BORLANDC__) && (__BORLANDC__ >= 0x520)
    #define wxHAVE_TCHAR_SUPPORT
    #include <ctype.h>
#elif defined(__WATCOMC__)
    #define wxHAVE_TCHAR_SUPPORT
#elif defined(__DMC__)
    #define wxHAVE_TCHAR_SUPPORT
#elif defined(__WXPALMOS__)
    #include <stddef.h>
#elif defined(__MINGW32__) && wxCHECK_W32API_VERSION( 1, 0 )
    #define wxHAVE_TCHAR_SUPPORT
    #include <stddef.h>
    #include <string.h>
    #include <ctype.h>
#elif 0 && defined(__VISAGECPP__) && (__IBMCPP__ >= 400)
    /* VZ: the old VisualAge definitions were completely wrong and had no */
    /*     chance at all to work in Unicode build anyhow so let's pretend that */
    /*     VisualAge does _not_ support TCHAR for the moment (as indicated by */
    /*     "0 &&" above) until someone really has time to delve into Unicode */
    /*     issues under OS/2 */

    /* VisualAge 4.0+ supports TCHAR */
    #define wxHAVE_TCHAR_SUPPORT
#endif /* compilers with (good) TCHAR support */

#ifdef __MWERKS__
    #define HAVE_WPRINTF
#endif

#ifdef wxHAVE_TCHAR_SUPPORT
    /* get TCHAR definition if we've got it */
    #include <tchar.h>

    /* we surely do have wchar_t if we have TCHAR */
    #ifndef wxUSE_WCHAR_T
        #define wxUSE_WCHAR_T 1
    #endif /* !defined(wxUSE_WCHAR_T) */

    /* and we also do have wcslen() */
    #ifndef HAVE_WCSLEN
        #define HAVE_WCSLEN
    #endif
#endif /* wxHAVE_TCHAR_SUPPORT */

/* ---------------------------------------------------------------------------- */
/* define wxChar type */
/* ---------------------------------------------------------------------------- */

/* TODO: define wxCharInt to be equal to either int or wint_t? */

#if !wxUSE_UNICODE
    typedef char wxChar;
    typedef signed char wxSChar;
    typedef unsigned char wxUChar;
#else /* Unicode */
    /* VZ: note that VC++ defines _T[SU]CHAR simply as wchar_t and not as */
    /*     signed/unsigned version of it which (a) makes sense to me (unlike */
    /*     char wchar_t is always unsigned) and (b) was how the previous */
    /*     definitions worked so keep it like this */

    /* Sun's SunPro compiler supports the wchar_t type and wide character */
    /* functions, but does not define __WCHAR_TYPE__. Define it here to */
    /* allow unicode enabled builds. */
    #if defined(__SUNPRO_CC) || defined(__SUNPRO_C)
    #define __WCHAR_TYPE__ wxchar_t
    #endif

    /* GNU libc has __WCHAR_TYPE__ which requires special treatment, see */
    /* comment below */
    #if !defined(__WCHAR_TYPE__) || \
        (!defined(__GNUC__) || wxCHECK_GCC_VERSION(2, 96))
        /* standard case */
        typedef wchar_t wxChar;
        typedef wchar_t wxSChar;
        typedef wchar_t wxUChar;
    #else /* __WCHAR_TYPE__ and gcc < 2.96 */
        /* VS: wxWidgets used to define wxChar as __WCHAR_TYPE__ here. However, */
        /*     this doesn't work with new GCC 3.x compilers because wchar_t is */
        /*     C++'s builtin type in the new standard. OTOH, old compilers (GCC */
        /*     2.x) won't accept new definition of wx{S,U}Char, therefore we */
        /*     have to define wxChar conditionally depending on detected */
        /*     compiler & compiler version. */
        /*     with old definition of wxChar. */
        typedef __WCHAR_TYPE__ wxChar;
        typedef __WCHAR_TYPE__ wxSChar;
        typedef __WCHAR_TYPE__ wxUChar;
    #endif /* __WCHAR_TYPE__ */
#endif /* ASCII/Unicode */

/* ---------------------------------------------------------------------------- */
/* define _T() and related macros */
/* ---------------------------------------------------------------------------- */

/* BSD systems define _T() to be something different in ctype.h, override it */
#if defined(__FreeBSD__) || defined(__DARWIN__)
    #include <ctype.h>
    #undef _T
#endif

/* could already be defined by tchar.h (it's quasi standard) */
#ifndef _T
    #if !wxUSE_UNICODE
        #define _T(x) x
    #else /* Unicode */
        #define _T(x) L ## x
    #endif /* ASCII/Unicode */
#endif /* !defined(_T) */

/* although global macros with such names are normally bad, we want to have */
/* another name for _T() which should be used to avoid confusion between _T() */
/* and _() in wxWidgets sources */
#define wxT(x)       _T(x)

/* Unicode-friendly __FILE__, __DATE__ and __TIME__ analogs */
#ifndef __TFILE__
    #define __XFILE__(x) wxT(x)
    #define __TFILE__ __XFILE__(__FILE__)
#endif

#ifndef __TDATE__
    #define __XDATE__(x) wxT(x)
    #define __TDATE__ __XDATE__(__DATE__)
#endif

#ifndef __TTIME__
    #define __XTIME__(x) wxT(x)
    #define __TTIME__ __XTIME__(__TIME__)
#endif

/*
    define wxFoo() function for each standard foo() function whose signature
    (exceptionally including the return type) includes any mention of char:
    wxFoo() is going to be a Unicode-friendly version of foo(), i.e. will have
    the same signature but with char replaced by wxChar which allows us to use
    it in Unicode build as well
 */

#ifdef wxHAVE_TCHAR_SUPPORT
    #include <ctype.h>

    #if defined(__WATCOMC__) && defined(UNICODE)
      #define WXWCHAR_T_CAST(c) (wint_t)(c)
    #else
      #define WXWCHAR_T_CAST(c) c
    #endif

    /* ctype.h functions */
    #define  wxIsalnum(c)   _istalnum(WXWCHAR_T_CAST(c))
    #define  wxIsalpha(c)   _istalpha(WXWCHAR_T_CAST(c))
    #define  wxIscntrl(c)   _istcntrl(WXWCHAR_T_CAST(c))
    #define  wxIsdigit(c)   _istdigit(WXWCHAR_T_CAST(c))
    #define  wxIsgraph(c)   _istgraph(WXWCHAR_T_CAST(c))
    #define  wxIslower(c)   _istlower(WXWCHAR_T_CAST(c))
    #define  wxIsprint(c)   _istprint(WXWCHAR_T_CAST(c))
    #define  wxIspunct(c)   _istpunct(WXWCHAR_T_CAST(c))
    #define  wxIsspace(c)   _istspace(WXWCHAR_T_CAST(c))
    #define  wxIsupper(c)   _istupper(WXWCHAR_T_CAST(c))
    #define  wxIsxdigit(c)  _istxdigit(WXWCHAR_T_CAST(c))

    /*
       There is a bug in VC6 C RTL: toxxx() functions dosn't do anything with
       signed chars < 0, so "fix" it here.
     */
    #define  wxTolower(c) _totlower((wxUChar)(c))
    #define  wxToupper(c) _totupper((wxUChar)(c))

    /* locale.h functons */
    #define  wxSetlocale _tsetlocale

    /* string.h functions */
    #define  wxStrcat    _tcscat
    #define  wxStrchr    _tcschr
    #define  wxStrcmp    _tcscmp
    #define  wxStrcoll   _tcscoll
    #define  wxStrcpy    _tcscpy
    #define  wxStrcspn   _tcscspn
    #define  wxStrdupW   _wcsdup        /* notice the 'W'! */
    #define  wxStrftime  _tcsftime
    #define  wxStricmp   _tcsicmp
    #define  wxStrnicmp  _tcsnicmp
    #define  wxStrlen_   _tcslen        /* used in wxStrlen inline function */
    #define  wxStrncat   _tcsncat
    #define  wxStrncmp   _tcsncmp
    #define  wxStrncpy   _tcsncpy
    #define  wxStrpbrk   _tcspbrk
    #define  wxStrrchr   _tcsrchr
    #define  wxStrspn    _tcsspn
    #define  wxStrstr    _tcsstr
    #define  wxStrtod    _tcstod
    #define  wxStrtol    _tcstol
    #define  wxStrtoul   _tcstoul
    #define  wxStrxfrm   _tcsxfrm

    /* stdio.h functions */
    #define  wxFgetc     _fgettc
    #define  wxFgetchar  _fgettchar
    #define  wxFgets     _fgetts
    #if wxUSE_UNICODE_MSLU
        #define  wxFopen    wxMSLU__tfopen
    #else
        #define  wxFopen     _tfopen
    #endif
    #define  wxFputc     _fputtc
    #define  wxFputchar  _fputtchar
    #define  wxFprintf   _ftprintf
    #define  wxFputs     _fputts
    #define  wxFreopen   _tfreopen
    #define  wxFscanf    _ftscanf
    #define  wxGetc      _gettc
    #define  wxGetchar   _gettchar
    #define  wxGets      _getts
    #define  wxPerror    _tperror
    #define  wxPrintf    _tprintf
    #define  wxPutc(c,f) _puttc(WXWCHAR_T_CAST(c),f)
    #define  wxPutchar   _puttchar
    #define  wxPuts      _putts
    #define  wxScanf     _tscanf
    #if defined(__DMC__)
        #if wxUSE_UNICODE
            /* Digital Mars adds count to _stprintf (C99) so prototype conversion see wxchar.cpp */
            int wxSprintf (wchar_t * __RESTRICT s, const wchar_t * __RESTRICT format, ... ) ;
        #else
            /* and there is a bug in D Mars tchar.h prior to 8.39.4n, so define as sprintf */
            #define wxSprintf sprintf
        #endif
    #else
        #define  wxSprintf   _stprintf
    #endif

    #define  wxSscanf    _stscanf
    #define  wxTmpnam    _ttmpnam
    #define  wxUngetc    _tungetc
    #define  wxVfprintf  _vftprintf
    #define  wxVprintf   _vtprintf
    #define  wxVsscanf   _vstscanf
    #define  wxVsprintf  _vstprintf

    /* special case: not all TCHAR-aware compilers have those */
    #if defined(__VISUALC__) || \
            (defined(__BORLANDC__) && __BORLANDC__ >= 0x540)
        #define wxVsnprintf_    _vsntprintf
        #define wxSnprintf_     _sntprintf
    #endif

    /* special case: these functions are missing under Win9x with Unicows so we */
    /* have to implement them ourselves */
    #if wxUSE_UNICODE_MSLU
        #define  wxRemove    wxMSLU__tremove
        #define  wxRename    wxMSLU__trename
    #else
        #ifdef __WXWINCE__
            /* carefully: wxRemove() must return 0 on success while DeleteFile()
               returns 0 on error, so don't just define one as the other */
            int wxRemove(const wxChar *path);
        #else
            #define  wxRemove    _tremove
            #define  wxRename    _trename
        #endif
    #endif

    /* stdlib.h functions */
    #define  wxAtoi      _ttoi
    #define  wxAtol      _ttol
    /* #define  wxAtof   _tttof -- notice that there is no such thing (why?) */
    /* 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 wxGetenv(name)  ((wxChar *)NULL)
    #else
        #define  wxGetenv    _tgetenv
    #endif
    #define  wxSystem    _tsystem

    /* time.h functions */
    #define  wxAsctime   _tasctime
    #define  wxCtime     _tctime

    #define wxMbstowcs mbstowcs
    #define wxWcstombs wcstombs
#else /* !TCHAR-aware compilers */

    /*
        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