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wxWidgets/include/wx/chartype.h

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/*
* Name: wx/chartype.h
* Purpose: Declarations of wxChar and related types
* Author: Joel Farley, Ove Kåven
* Modified by: Vadim Zeitlin, Robert Roebling, Ron Lee
* Created: 1998/06/12
* 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_WXCHARTYPE_H_
#define _WX_WXCHARTYPE_H_
/*
wx/defs.h indirectly includes this file, so we can't include it here,
include just its subset which defines SIZEOF_WCHAR_T that is used here
(under Unix it's in configure-generated setup.h, so including wx/platform.h
would have been enough, but this is not the case under other platforms).
*/
#include "wx/types.h"
/* This is kept only for backwards compatibility, in case some application code
checks for it. It's always 1 and can't be changed. */
#define wxUSE_WCHAR_T 1
/*
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(__MINGW32__)
#ifndef HAVE_WCHAR_H
#define HAVE_WCHAR_H
#endif
#endif
#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++ */
/* the current (as of Mar 2014) version of Android (up to api level 19) */
/* doesn't include some declarations (wscdup, wcslen, wcscasecmp, etc.) */
/* (moved out from __CYGWIN__ block) */
#if defined(__WXQT__) && !defined(wcsdup) && defined(__ANDROID__)
#ifdef __cplusplus
extern "C" {
#endif
extern wchar_t *wcsdup(const wchar_t *);
extern size_t wcslen (const wchar_t *);
extern size_t wcsnlen (const wchar_t *, size_t );
extern int wcscasecmp (const wchar_t *, const wchar_t *);
extern int wcsncasecmp (const wchar_t *, const wchar_t *, size_t);
#ifdef __cplusplus
}
#endif
#endif /* Android */
#elif defined(HAVE_WCSTR_H)
/* old compilers have relevant declarations here */
#include <wcstr.h>
#elif defined(__FreeBSD__) || defined(__DARWIN__)
/* include stdlib.h for wchar_t */
#include <stdlib.h>
#endif /* HAVE_WCHAR_H */
#ifdef HAVE_WIDEC_H
#include <widec.h>
#endif
/* -------------------------------------------------------------------------- */
/* 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(__MINGW32__)
#define wxHAVE_TCHAR_SUPPORT
#include <stddef.h>
#include <string.h>
#include <ctype.h>
#endif /* compilers with (good) TCHAR support */
#ifdef wxHAVE_TCHAR_SUPPORT
/* get TCHAR definition if we've got it */
#include <tchar.h>
#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
/* 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 */
typedef wchar_t wxChar;
typedef wchar_t wxSChar;
typedef wchar_t wxUChar;
#endif /* ASCII/Unicode */
/* ------------------------------------------------------------------------- */
/* define wxStringCharType */
/* ------------------------------------------------------------------------- */
/* depending on the platform, Unicode build can either store wxStrings as
wchar_t* or UTF-8 encoded char*: */
#if wxUSE_UNICODE
/* FIXME-UTF8: what would be better place for this? */
#if defined(wxUSE_UTF8_LOCALE_ONLY) && !defined(wxUSE_UNICODE_UTF8)
#error "wxUSE_UTF8_LOCALE_ONLY only makes sense with wxUSE_UNICODE_UTF8"
#endif
#ifndef wxUSE_UTF8_LOCALE_ONLY
#define wxUSE_UTF8_LOCALE_ONLY 0
#endif
#ifndef wxUSE_UNICODE_UTF8
#define wxUSE_UNICODE_UTF8 0
#endif
#if wxUSE_UNICODE_UTF8
#define wxUSE_UNICODE_WCHAR 0
#else
#define wxUSE_UNICODE_WCHAR 1
#endif
#else
#define wxUSE_UNICODE_WCHAR 0
#define wxUSE_UNICODE_UTF8 0
#define wxUSE_UTF8_LOCALE_ONLY 0
#endif
#ifndef SIZEOF_WCHAR_T
#error "SIZEOF_WCHAR_T must be defined before including this file in wx/defs.h"
#endif
#if wxUSE_UNICODE_WCHAR && SIZEOF_WCHAR_T == 2
#define wxUSE_UNICODE_UTF16 1
#else
#define wxUSE_UNICODE_UTF16 0
#endif
/* define char type used by wxString internal representation: */
#if wxUSE_UNICODE_WCHAR
typedef wchar_t wxStringCharType;
#else /* wxUSE_UNICODE_UTF8 || ANSI */
typedef char wxStringCharType;
#endif
/* ------------------------------------------------------------------------- */
/* define wxT() 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
/*
wxT ("wx text") macro turns a literal string constant into a wide char
constant. It is mostly unnecessary with wx 2.9 but defined for
compatibility.
*/
#ifndef wxT
#if !wxUSE_UNICODE
#define wxT(x) x
#else /* Unicode */
/*
Notice that we use an intermediate macro to allow x to be expanded
if it's a macro itself.
*/
#define wxT(x) wxCONCAT_HELPER(L, x)
#endif /* ASCII/Unicode */
#endif /* !defined(wxT) */
/*
wxT_2 exists only for compatibility with wx 2.x and is the same as wxT() in
that version but nothing in the newer ones.
*/
#define wxT_2(x) x
/*
wxS ("wx string") macro can be used to create literals using the same
representation as wxString does internally, i.e. wchar_t in Unicode build
under Windows or char in UTF-8-based Unicode builds and (deprecated) ANSI
builds everywhere (see wxStringCharType definition above).
*/
#if wxUSE_UNICODE_WCHAR
/*
As above with wxT(), wxS() argument is expanded if it's a macro.
*/
#define wxS(x) wxCONCAT_HELPER(L, x)
#else /* wxUSE_UNICODE_UTF8 || ANSI */
#define wxS(x) x
#endif
/*
_T() is a synonym for wxT() familiar to Windows programmers. As this macro
has even higher risk of conflicting with system headers, its use is
discouraged and you may predefine wxNO__T to disable it. Additionally, we
do it ourselves for Sun CC which is known to use it in its standard headers
(see #10660).
*/
#if defined(__SUNPRO_C) || defined(__SUNPRO_CC)
#ifndef wxNO__T
#define wxNO__T
#endif
#endif
#if !defined(_T) && !defined(wxNO__T)
#define _T(x) wxT(x)
#endif
/* a helper macro allowing to make another macro Unicode-friendly, see below */
#define wxAPPLY_T(x) wxT(x)
/* Unicode-friendly __FILE__, __DATE__ and __TIME__ analogs */
#ifndef __TFILE__
#define __TFILE__ wxAPPLY_T(__FILE__)
#endif
#ifndef __TDATE__
#define __TDATE__ wxAPPLY_T(__DATE__)
#endif
#ifndef __TTIME__
#define __TTIME__ wxAPPLY_T(__TIME__)
#endif
#endif /* _WX_WXCHARTYPE_H_ */
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