285 lines
10 KiB
C
285 lines
10 KiB
C
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///////////////////////////////////////////////////////////////////////////////
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// Name: wx/wxcrtvararg.h
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// Purpose: Type-safe ANSI and Unicode builds compatible wrappers for
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// printf(), scanf() and related CRT functions
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// Author: Joel Farley, Ove K<>ven
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// Modified by: Vadim Zeitlin, Robert Roebling, Ron Lee
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// Created: 2007-02-19
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// RCS-ID: $Id$
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// Copyright: (c) 2007 REA Elektronik GmbH
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_WXCRTVARARG_H_
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#define _WX_WXCRTVARARG_H_
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#include "wx/wxcrt.h"
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#include "wx/strvararg.h"
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/* Required for wxPrintf() etc */
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#include <stdarg.h>
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#ifdef wxHAVE_TCHAR_SUPPORT
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WX_DEFINE_VARARG_FUNC(int, wxFprintf, _ftprintf)
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WX_DEFINE_VARARG_FUNC(int, wxPrintf, _tprintf)
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#define wxPutc(c,f) _puttc(WXWCHAR_T_CAST(c),f)
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#define wxPutchar _puttchar
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#define wxPuts _putts
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#define wxScanf _tscanf /* FIXME-UTF8: not wrapped */
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#if defined(__DMC__)
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#if wxUSE_UNICODE
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/* Digital Mars adds count to _stprintf (C99) so prototype conversion see wxchar.cpp */
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int wxDoSprintf (wchar_t * __RESTRICT s, const wchar_t * __RESTRICT format, ... ) ;
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WX_DEFINE_VARARG_FUNC(int, wxSprintf, wxDoSprintf)
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#else
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/* and there is a bug in D Mars tchar.h prior to 8.39.4n, so define
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as sprintf */
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WX_DEFINE_VARARG_FUNC(int, wxSprintf, sprintf)
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#endif
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#else
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WX_DEFINE_VARARG_FUNC(int, wxSprintf, _stprintf)
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#endif
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/* FIXME-UTF8: not wrapped */
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#define wxSscanf _stscanf
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#define wxVfprintf _vftprintf
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#define wxVprintf _vtprintf
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#define wxVsscanf _vstscanf
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#define wxVsprintf _vstprintf
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#else /* !TCHAR-aware compilers */
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#if !wxUSE_UNICODE /* ASCII */
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WX_DEFINE_VARARG_FUNC(int, wxFprintf, fprintf)
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#define wxFscanf fscanf
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WX_DEFINE_VARARG_FUNC(int, wxPrintf, printf)
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#define wxScanf scanf
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WX_DEFINE_VARARG_FUNC(int, wxSprintf, sprintf)
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#define wxSscanf sscanf
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#define wxVfprintf vfprintf
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#define wxVprintf vprintf
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#define wxVsscanf vsscanf
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#define wxVsprintf vsprintf
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#endif /* ASCII */
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#endif /* TCHAR-aware compilers/the others */
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/* printf() family saga */
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/*
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For some systems [v]snprintf() exists in the system libraries but not in the
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headers, so we need to declare it ourselves to be able to use it.
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*/
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#if defined(HAVE_VSNPRINTF) && !defined(HAVE_VSNPRINTF_DECL)
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#ifdef __cplusplus
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extern "C"
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#else
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extern
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#endif
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int vsnprintf(char *str, size_t size, const char *format, va_list ap);
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#endif /* !HAVE_VSNPRINTF_DECL */
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#if defined(HAVE_SNPRINTF) && !defined(HAVE_SNPRINTF_DECL)
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#ifdef __cplusplus
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extern "C"
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#else
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extern
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#endif
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WXDLLIMPEXP_BASE int snprintf(char *str, size_t size, const char *format, ...);
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#endif /* !HAVE_SNPRINTF_DECL */
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/* Wrapper for vsnprintf if it's 3rd parameter is non-const. Note: the
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* same isn't done for snprintf below, the builtin wxSnprintf_ is used
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* instead since it's already a simple wrapper */
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#if defined __cplusplus && defined HAVE_BROKEN_VSNPRINTF_DECL
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inline int wx_fixed_vsnprintf(char *str, size_t size, const char *format, va_list ap)
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{
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return vsnprintf(str, size, (char*)format, ap);
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}
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#endif
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/*
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MinGW MSVCRT has non-standard vswprintf() (for MSVC compatibility
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presumably) and normally _vsnwprintf() is used instead
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*/
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#if defined(HAVE_VSWPRINTF) && defined(__MINGW32__)
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#undef HAVE_VSWPRINTF
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#endif
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#if wxUSE_PRINTF_POS_PARAMS
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/*
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The systems where vsnprintf() supports positional parameters should
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define the HAVE_UNIX98_PRINTF symbol.
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On systems which don't (e.g. Windows) we are forced to use
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our wxVsnprintf() implementation.
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*/
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#if defined(HAVE_UNIX98_PRINTF)
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#if wxUSE_UNICODE
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#ifdef HAVE_VSWPRINTF
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#define wxVsnprintf_ vswprintf
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#endif
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#else /* ASCII */
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#ifdef HAVE_BROKEN_VSNPRINTF_DECL
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#define wxVsnprintf_ wx_fixed_vsnprintf
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#else
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#define wxVsnprintf_ vsnprintf
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#endif
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#endif
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#else /* !HAVE_UNIX98_PRINTF */
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/*
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The only compiler with positional parameters support under Windows
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is VC++ 8.0 which provides a new xxprintf_p() functions family.
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The 2003 PSDK includes a slightly earlier version of VC8 than the
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main release and does not have the printf_p functions.
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*/
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#if defined _MSC_FULL_VER && _MSC_FULL_VER >= 140050727 && !defined __WXWINCE__
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#if wxUSE_UNICODE
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#define wxVsnprintf_ _vswprintf_p
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#else
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#define wxVsnprintf_ _vsprintf_p
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#endif
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#endif
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#endif /* HAVE_UNIX98_PRINTF/!HAVE_UNIX98_PRINTF */
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#else /* !wxUSE_PRINTF_POS_PARAMS */
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/*
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We always want to define safe snprintf() function to be used instead of
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sprintf(). Some compilers already have it (or rather vsnprintf() which
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we really need...), otherwise we implement it using our own printf()
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code.
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We define function with a trailing underscore here because the real one
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is a wrapper around it as explained below
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*/
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/* first deal with TCHAR-aware compilers which have _vsntprintf */
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#ifndef wxVsnprintf_
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#if defined(__VISUALC__) || \
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(defined(__BORLANDC__) && __BORLANDC__ >= 0x540)
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#define wxSnprintf_ _sntprintf
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#define wxVsnprintf_ _vsntprintf
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WX_DEFINE_VARARG_FUNC(int, wxSnprintf_, _sntprintf)
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#endif
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#endif
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/* if this didn't work, define it separately for Unicode and ANSI builds */
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#ifndef wxVsnprintf_
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#if wxUSE_UNICODE
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#if defined(HAVE__VSNWPRINTF)
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#define wxVsnprintf_ _vsnwprintf
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#elif defined(HAVE_VSWPRINTF)
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#define wxVsnprintf_ vswprintf
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#elif defined(__WATCOMC__)
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#define wxVsnprintf_ _vsnwprintf
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WX_DEFINE_VARARG_FUNC(int, wxSnprintf_, _snwprintf)
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#endif
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#else /* ASCII */
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/*
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All versions of CodeWarrior supported by wxWidgets apparently
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have both snprintf() and vsnprintf()
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*/
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#if defined(HAVE_SNPRINTF) \
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|| defined(__MWERKS__) || defined(__WATCOMC__)
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#ifndef HAVE_BROKEN_SNPRINTF_DECL
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WX_DEFINE_VARARG_FUNC(int, wxSnprintf_, snprintf)
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#endif
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#endif
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#if defined(HAVE_VSNPRINTF) \
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|| defined(__MWERKS__) || defined(__WATCOMC__)
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#ifdef HAVE_BROKEN_VSNPRINTF_DECL
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#define wxVsnprintf_ wx_fixed_vsnprintf
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#else
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#define wxVsnprintf_ vsnprintf
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#endif
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#endif
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#endif /* Unicode/ASCII */
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#endif /* wxVsnprintf_ */
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#endif /* wxUSE_PRINTF_POS_PARAMS/!wxUSE_PRINTF_POS_PARAMS */
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#ifndef wxSnprintf_
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/* no snprintf(), cook our own */
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WXDLLIMPEXP_BASE int
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wxDoSnprintf_(wxChar *buf, size_t len,
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const wxChar *format, ...) ATTRIBUTE_PRINTF_3;
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WX_DEFINE_VARARG_FUNC(int, wxSnprintf_, wxDoSnprintf_)
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#endif
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#ifndef wxVsnprintf_
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/* no (suitable) vsnprintf(), cook our own */
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WXDLLIMPEXP_BASE int
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wxVsnprintf_(wxChar *buf, size_t len,
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const wxChar *format, va_list argptr);
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#define wxUSE_WXVSNPRINTF 1
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#else
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#define wxUSE_WXVSNPRINTF 0
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#endif
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/*
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In Unicode mode we need to have all standard functions such as wprintf() and
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so on but not all systems have them so use our own implementations in this
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case.
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*/
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#if wxUSE_UNICODE && !defined(wxHAVE_TCHAR_SUPPORT) && !defined(HAVE_WPRINTF)
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#define wxNEED_WPRINTF
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#endif
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/*
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More Unicode complications: although both ANSI C and C++ define a number of
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wide character functions such as wprintf(), not all environments have them.
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Worse, those which do have different behaviours: under Windows, %s format
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specifier changes its meaning in Unicode build and expects a Unicode string
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while under Unix/POSIX it still means an ASCII string even for wprintf() and
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%ls has to be used for wide strings.
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We choose to always emulate Windows behaviour as more useful for us so even
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if we have wprintf() we still must wrap it in a non trivial wxPrintf().
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*/
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#if defined(wxNEED_PRINTF_CONVERSION) || defined(wxNEED_WPRINTF)
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/*
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we need to implement all wide character printf and scanf functions
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either because we don't have them at all or because they don't have the
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semantics we need
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*/
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WX_DEFINE_VARARG_FUNC(int, wxScanf, wxDoScanf)
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int wxDoScanf( const wxChar *format, ... ) ATTRIBUTE_PRINTF_1;
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WX_DEFINE_VARARG_FUNC(int, wxSscanf, wxDoSscanf)
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int wxDoSscanf( const wxChar *str, const wxChar *format, ... ) ATTRIBUTE_PRINTF_2;
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WX_DEFINE_VARARG_FUNC(int, wxFscanf, wxDoFscanf)
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int wxDoFscanf( FILE *stream, const wxChar *format, ... ) ATTRIBUTE_PRINTF_2;
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WX_DEFINE_VARARG_FUNC(int, wxPrintf, wxDoPrintf)
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int wxDoPrintf( const wxChar *format, ... ) ATTRIBUTE_PRINTF_1;
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WX_DEFINE_VARARG_FUNC(int, wxSprintf, wxDoSprintf)
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int wxDoSprintf( wxChar *str, const wxChar *format, ... ) ATTRIBUTE_PRINTF_2;
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WX_DEFINE_VARARG_FUNC(int, wxFprintf, wxDoFprintf)
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int wxDoFprintf( FILE *stream, const wxChar *format, ... ) ATTRIBUTE_PRINTF_2;
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int wxVsscanf( const wxChar *str, const wxChar *format, va_list ap );
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int wxVfprintf( FILE *stream, const wxChar *format, va_list ap );
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int wxVprintf( const wxChar *format, va_list ap );
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int wxVsprintf( wxChar *str, const wxChar *format, va_list ap );
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#endif /* wxNEED_PRINTF_CONVERSION */
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/* these 2 can be simply mapped to the versions with underscore at the end */
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/* if we don't have to do the conversion */
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/*
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However, if we don't have any vswprintf() at all we don't need to redefine
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anything as our own wxVsnprintf_() already behaves as needed.
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*/
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#if defined(wxNEED_PRINTF_CONVERSION) && defined(wxVsnprintf_)
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WX_DEFINE_VARARG_FUNC(int, wxSnprintf, wxDoSnprintf)
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int wxDoSnprintf( wxChar *str, size_t size, const wxChar *format, ... ) ATTRIBUTE_PRINTF_3;
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int wxVsnprintf( wxChar *str, size_t size, const wxChar *format, va_list ap );
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#else
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#define wxSnprintf wxSnprintf_
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#define wxVsnprintf wxVsnprintf_
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#endif
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#endif /* _WX_WXCRTVARARG_H_ */
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