293 lines
12 KiB
C
293 lines
12 KiB
C
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//////////////////////////////////////////////////////////////////////////////
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// Name: wx/xlocale.h
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// Purpose: Header to provide some xlocale wrappers
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// Author: Brian Vanderburg II, Vadim Zeitlin
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// Created: 2008-01-07
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// RCS-ID: $Id$
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// Copyright: (c) 2008 Brian Vanderburg II
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// 2008 Vadim Zeitlin <vadim@wxwidgets.org>
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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/*
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This header defines portable wrappers around xlocale foo_l() functions or
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their MSVC proprietary _foo_l() equivalents when they are available and
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implements these functions for the "C" locale [only] if they are not. This
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allows the program running under the default user locale to still use "C"
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locale for operations such as reading data from files where they are stored
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using decimal point &c.
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TODO: Currently only the character classification and transformation
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functions are implemented, we also need at least
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- numbers: atof_l(), strtod_l() &c
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- formatted IO: scanf_l(), printf_l() &c
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- time: strftime_l(), strptime_l()
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*/
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#ifndef _WX_XLOCALE_H_
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#define _WX_XLOCALE_H_
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#include "wx/defs.h" // wxUSE_XLOCALE
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#if wxUSE_XLOCALE
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#include "wx/crt.h" // Includes wx/chartype.h, wx/wxcrt.h(wx/string.h)
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#include "wx/intl.h" // wxLanguage
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// The platform-specific locale type
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// If wxXLocale_t is not defined, then only "C" locale support is provided
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#ifdef wxHAS_XLOCALE_SUPPORT
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#if wxCHECK_VISUALC_VERSION(8)
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typedef _locale_t wxXLocale_t;
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#define wxXLOCALE_IDENT(name) _ ## name
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#elif defined(HAVE_LOCALE_T)
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#include <locale.h>
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#include <xlocale.h>
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#include <ctype.h>
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#if wxUSE_UNICODE
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#include <wctype.h>
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#endif
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// Locale type and identifier name
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typedef locale_t wxXLocale_t;
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#define wxXLOCALE_IDENT(name) name
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#else
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#error "Unknown xlocale support"
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#endif
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#endif // wxHAS_XLOCALE_SUPPORT
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// wxXLocale is a wrapper around the native type representing a locale.
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//
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// It is not to be confused with wxLocale, which handles actually changing the
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// locale, loading message catalogs, etc. This just stores a locale value.
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// The similarity of names is unfortunate, but there doesn't seem to be any
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// better alternative right now. Perhaps by wxWidgets 4.0 better naming could
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// be used, or this class could become wxLocale (a wrapper for the value), and
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// some other class could be used to load the language catalogs or something
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// that would be clearer
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#ifdef wxHAS_XLOCALE_SUPPORT
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class WXDLLIMPEXP_BASE wxXLocale
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{
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public:
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// Construct an uninitialized locale
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wxXLocale() { m_locale = NULL; }
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// Construct from a symbolic language constant
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wxXLocale(wxLanguage lang);
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// Construct from the given language string
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wxXLocale(const char *loc) { Init(loc); }
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// Destroy the locale
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~wxXLocale() { Free(); }
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// Get the global "C" locale object
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static wxXLocale& GetCLocale();
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// Check if the object represents a valid locale (notice that without
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// wxHAS_XLOCALE_SUPPORT the only valid locale is the "C" one)
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bool IsOk() const { return m_locale != NULL; }
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// Get the type
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wxXLocale_t Get() const { return m_locale; }
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private:
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// Special ctor for the "C" locale, it's only used internally as the user
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// code is supposed to use GetCLocale()
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wxXLocale(struct wxXLocaleCTag * WXUNUSED(dummy)) { Init("C"); }
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// Create from the given language string (called from ctors)
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void Init(const char *loc);
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// Free the locale if it's non-NULL
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void Free();
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// The corresponding locale handle, NULL if invalid
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wxXLocale_t m_locale;
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// POSIX xlocale API provides a duplocale() function but MSVC locale API
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// doesn't give us any means to copy a _locale_t object so we reduce the
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// functionality to least common denominator here -- it shouldn't be a
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// problem as copying the locale objects shouldn't be often needed
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DECLARE_NO_COPY_CLASS(wxXLocale)
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};
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#else // !wxHAS_XLOCALE_SUPPORT
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// Skeleton version supporting only the "C" locale for the systems without
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// xlocale support
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class WXDLLIMPEXP_BASE wxXLocale
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{
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public:
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// Construct an uninitialized locale
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wxXLocale() { m_isC = false; }
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// Construct from a symbolic language constant: unless the language is
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// wxLANGUAGE_ENGLISH_US (which we suppose to be the same as "C" locale)
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// the object will be invalid
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wxXLocale(wxLanguage lang)
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{
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m_isC = lang == wxLANGUAGE_ENGLISH_US;
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}
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// Construct from the given language string: unless the string is "C" or
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// "POSIX" the object will be invalid
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wxXLocale(const char *loc)
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{
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m_isC = loc && (strcmp(loc, "C") == 0 || strcmp(loc, "POSIX") == 0);
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}
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// Default copy ctor, assignment operator and dtor are ok (or would be if
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// we didn't use DECLARE_NO_COPY_CLASS() for consistency with the xlocale
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// version)
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// Get the global "C" locale object
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static wxXLocale& GetCLocale();
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// Check if the object represents a valid locale (notice that without
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// wxHAS_XLOCALE_SUPPORT the only valid locale is the "C" one)
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bool IsOk() const { return m_isC; }
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private:
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// Special ctor for the "C" locale, it's only used internally as the user
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// code is supposed to use GetCLocale()
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wxXLocale(struct wxXLocaleCTag * WXUNUSED(dummy)) { m_isC = true; }
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// Without xlocale support this class can only represent "C" locale, if
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// this is false the object is invalid
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bool m_isC;
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// although it's not a problem to copy the objects of this class, we use
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// this macro in this implementation for consistency with the xlocale-based
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// one which can't be copied when using MSVC locale API
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DECLARE_NO_COPY_CLASS(wxXLocale)
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};
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#endif // wxHAS_XLOCALE_SUPPORT/!wxHAS_XLOCALE_SUPPORT
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// A shorter synonym for the most commonly used locale object
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#define wxCLocale (wxXLocale::GetCLocale())
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// Wrappers for various functions:
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#ifdef wxHAS_XLOCALE_SUPPORT
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// ctype functions
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#define wxCRT_Isalnum_lA wxXLOCALE_IDENT(isalnum_l)
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#define wxCRT_Isalpha_lA wxXLOCALE_IDENT(isalpha_l)
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#define wxCRT_Iscntrl_lA wxXLOCALE_IDENT(iscntrl_l)
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#define wxCRT_Isdigit_lA wxXLOCALE_IDENT(isdigit_l)
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#define wxCRT_Isgraph_lA wxXLOCALE_IDENT(isgraph_l)
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#define wxCRT_Islower_lA wxXLOCALE_IDENT(islower_l)
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#define wxCRT_Isprint_lA wxXLOCALE_IDENT(isprint_l)
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#define wxCRT_Ispunct_lA wxXLOCALE_IDENT(ispunct_l)
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#define wxCRT_Isspace_lA wxXLOCALE_IDENT(isspace_l)
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#define wxCRT_Isupper_lA wxXLOCALE_IDENT(isupper_l)
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#define wxCRT_Isxdigit_lA wxXLOCALE_IDENT(isxdigit_l)
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#define wxCRT_Tolower_lA wxXLOCALE_IDENT(tolower_l)
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#define wxCRT_Toupper_lA wxXLOCALE_IDENT(toupper_l)
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inline int wxIsalnum_l(char c, const wxXLocale& loc)
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{ return wxCRT_Isalnum_lA(c, loc.Get()); }
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inline int wxIsalpha_l(char c, const wxXLocale& loc)
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{ return wxCRT_Isalpha_lA(c, loc.Get()); }
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inline int wxIscntrl_l(char c, const wxXLocale& loc)
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{ return wxCRT_Iscntrl_lA(c, loc.Get()); }
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inline int wxIsdigit_l(char c, const wxXLocale& loc)
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{ return wxCRT_Isdigit_lA(c, loc.Get()); }
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inline int wxIsgraph_l(char c, const wxXLocale& loc)
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{ return wxCRT_Isgraph_lA(c, loc.Get()); }
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inline int wxIslower_l(char c, const wxXLocale& loc)
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{ return wxCRT_Islower_lA(c, loc.Get()); }
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inline int wxIsprint_l(char c, const wxXLocale& loc)
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{ return wxCRT_Isprint_lA(c, loc.Get()); }
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inline int wxIspunct_l(char c, const wxXLocale& loc)
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{ return wxCRT_Ispunct_lA(c, loc.Get()); }
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inline int wxIsspace_l(char c, const wxXLocale& loc)
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{ return wxCRT_Isspace_lA(c, loc.Get()); }
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inline int wxIsupper_l(char c, const wxXLocale& loc)
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{ return wxCRT_Isupper_lA(c, loc.Get()); }
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inline int wxIsxdigit_l(char c, const wxXLocale& loc)
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{ return wxCRT_Isxdigit_lA(c, loc.Get()); }
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inline char wxTolower_l(char c, const wxXLocale& loc)
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{ return wxCRT_Tolower_lA(c, loc.Get()); }
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inline char wxToupper_l(char c, const wxXLocale& loc)
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{ return wxCRT_Toupper_lA(c, loc.Get()); }
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#if wxUSE_UNICODE
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#define wxCRT_Isalnum_lW wxXLOCALE_IDENT(iswalnum_l)
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#define wxCRT_Isalpha_lW wxXLOCALE_IDENT(iswalpha_l)
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#define wxCRT_Iscntrl_lW wxXLOCALE_IDENT(iswcntrl_l)
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#define wxCRT_Isdigit_lW wxXLOCALE_IDENT(iswdigit_l)
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#define wxCRT_Isgraph_lW wxXLOCALE_IDENT(iswgraph_l)
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#define wxCRT_Islower_lW wxXLOCALE_IDENT(iswlower_l)
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#define wxCRT_Isprint_lW wxXLOCALE_IDENT(iswprint_l)
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#define wxCRT_Ispunct_lW wxXLOCALE_IDENT(iswpunct_l)
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#define wxCRT_Isspace_lW wxXLOCALE_IDENT(iswspace_l)
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#define wxCRT_Isupper_lW wxXLOCALE_IDENT(iswupper_l)
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#define wxCRT_Isxdigit_lW wxXLOCALE_IDENT(iswxdigit_l)
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#define wxCRT_Tolower_lW wxXLOCALE_IDENT(towlower_l)
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#define wxCRT_Toupper_lW wxXLOCALE_IDENT(towupper_l)
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inline int wxIsalnum_l(wchar_t c, const wxXLocale& loc)
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{ return wxCRT_Isalnum_lW(c, loc.Get()); }
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inline int wxIsalpha_l(wchar_t c, const wxXLocale& loc)
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{ return wxCRT_Isalpha_lW(c, loc.Get()); }
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inline int wxIscntrl_l(wchar_t c, const wxXLocale& loc)
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{ return wxCRT_Iscntrl_lW(c, loc.Get()); }
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inline int wxIsdigit_l(wchar_t c, const wxXLocale& loc)
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{ return wxCRT_Isdigit_lW(c, loc.Get()); }
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inline int wxIsgraph_l(wchar_t c, const wxXLocale& loc)
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{ return wxCRT_Isgraph_lW(c, loc.Get()); }
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inline int wxIslower_l(wchar_t c, const wxXLocale& loc)
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{ return wxCRT_Islower_lW(c, loc.Get()); }
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inline int wxIsprint_l(wchar_t c, const wxXLocale& loc)
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{ return wxCRT_Isprint_lW(c, loc.Get()); }
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inline int wxIspunct_l(wchar_t c, const wxXLocale& loc)
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{ return wxCRT_Ispunct_lW(c, loc.Get()); }
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inline int wxIsspace_l(wchar_t c, const wxXLocale& loc)
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{ return wxCRT_Isspace_lW(c, loc.Get()); }
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inline int wxIsupper_l(wchar_t c, const wxXLocale& loc)
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{ return wxCRT_Isupper_lW(c, loc.Get()); }
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inline int wxIsxdigit_l(wchar_t c, const wxXLocale& loc)
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{ return wxCRT_Isxdigit_lW(c, loc.Get()); }
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inline wchar_t wxTolower_l(wchar_t c, const wxXLocale& loc)
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{ return wxCRT_Tolower_lW(c, loc.Get()); }
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inline wchar_t wxToupper_l(wchar_t c, const wxXLocale& loc)
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{ return wxCRT_Toupper_lW(c, loc.Get()); }
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#endif // wxUSE_UNICDE (ctype functions)
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#else // !wxHAS_XLOCALE_SUPPORT
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// ctype functions
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int WXDLLIMPEXP_BASE wxIsalnum_l(const wxUniChar& c, const wxXLocale& loc);
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int WXDLLIMPEXP_BASE wxIsalpha_l(const wxUniChar& c, const wxXLocale& loc);
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int WXDLLIMPEXP_BASE wxIscntrl_l(const wxUniChar& c, const wxXLocale& loc);
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int WXDLLIMPEXP_BASE wxIsdigit_l(const wxUniChar& c, const wxXLocale& loc);
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int WXDLLIMPEXP_BASE wxIsgraph_l(const wxUniChar& c, const wxXLocale& loc);
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int WXDLLIMPEXP_BASE wxIslower_l(const wxUniChar& c, const wxXLocale& loc);
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int WXDLLIMPEXP_BASE wxIsprint_l(const wxUniChar& c, const wxXLocale& loc);
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int WXDLLIMPEXP_BASE wxIspunct_l(const wxUniChar& c, const wxXLocale& loc);
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int WXDLLIMPEXP_BASE wxIsspace_l(const wxUniChar& c, const wxXLocale& loc);
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int WXDLLIMPEXP_BASE wxIsupper_l(const wxUniChar& c, const wxXLocale& loc);
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int WXDLLIMPEXP_BASE wxIsxdigit_l(const wxUniChar& c, const wxXLocale& loc);
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wxUniChar WXDLLIMPEXP_BASE wxTolower_l(const wxUniChar& c, const wxXLocale& loc);
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wxUniChar WXDLLIMPEXP_BASE wxToupper_l(const wxUniChar& c, const wxXLocale& loc);
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#endif // wxHAS_XLOCALE_SUPPORT/!wxHAS_XLOCALE_SUPPORT
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#endif // wxUSE_XLOCALE
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#endif // _WX_XLOCALE_H_
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