zdoom-macos-deps/deps/wxwidgets/include/wx-3.1/wx/intl.h
2021-06-28 10:54:57 +03:00

385 lines
14 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: wx/intl.h
// Purpose: Internationalization and localisation for wxWidgets
// Author: Vadim Zeitlin
// Modified by: Michael N. Filippov <michael@idisys.iae.nsk.su>
// (2003/09/30 - plural forms support)
// Created: 29/01/98
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_INTL_H_
#define _WX_INTL_H_
#include "wx/defs.h"
#include "wx/string.h"
#include "wx/translation.h"
// Make wxLayoutDirection enum available without need for wxUSE_INTL so wxWindow, wxApp
// and other classes are not distrubed by wxUSE_INTL
enum wxLayoutDirection
{
wxLayout_Default,
wxLayout_LeftToRight,
wxLayout_RightToLeft
};
#if wxUSE_INTL
#include "wx/fontenc.h"
#include "wx/language.h"
// ============================================================================
// global decls
// ============================================================================
// ----------------------------------------------------------------------------
// macros
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// forward decls
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_FWD_BASE wxLocale;
class WXDLLIMPEXP_FWD_BASE wxLanguageInfoArray;
// ============================================================================
// locale support
// ============================================================================
// ----------------------------------------------------------------------------
// wxLanguageInfo: encapsulates wxLanguage to OS native lang.desc.
// translation information
// ----------------------------------------------------------------------------
struct WXDLLIMPEXP_BASE wxLanguageInfo
{
int Language; // wxLanguage id
wxString CanonicalName; // Canonical name, e.g. fr_FR
#ifdef __WINDOWS__
wxUint32 WinLang, // Win32 language identifiers
WinSublang;
#endif // __WINDOWS__
wxString Description; // human-readable name of the language
wxLayoutDirection LayoutDirection;
#ifdef __WINDOWS__
// return the LCID corresponding to this language
wxUint32 GetLCID() const;
#endif // __WINDOWS__
// return the locale name corresponding to this language usable with
// setlocale() on the current system or empty string if this locale is not
// supported
wxString GetLocaleName() const;
// Call setlocale() and return non-null value if it works for this language.
//
// This function is mostly for internal use, as changing locale involves
// more than just calling setlocale() on some platforms, use wxLocale to
// do everything that needs to be done instead of calling this method.
const char* TrySetLocale() const;
};
// ----------------------------------------------------------------------------
// wxLocaleCategory: the category of locale settings
// ----------------------------------------------------------------------------
enum wxLocaleCategory
{
// (any) numbers
wxLOCALE_CAT_NUMBER,
// date/time
wxLOCALE_CAT_DATE,
// monetary value
wxLOCALE_CAT_MONEY,
// default category for wxLocaleInfo values which only apply to a single
// category (e.g. wxLOCALE_SHORT_DATE_FMT)
wxLOCALE_CAT_DEFAULT,
wxLOCALE_CAT_MAX
};
// ----------------------------------------------------------------------------
// wxLocaleInfo: the items understood by wxLocale::GetInfo()
// ----------------------------------------------------------------------------
enum wxLocaleInfo
{
// the thousands separator (for wxLOCALE_CAT_NUMBER or MONEY)
wxLOCALE_THOUSANDS_SEP,
// the character used as decimal point (for wxLOCALE_CAT_NUMBER or MONEY)
wxLOCALE_DECIMAL_POINT,
// the stftime()-formats used for short/long date and time representations
// (under some platforms short and long date formats are the same)
//
// NB: these elements should appear in this order, code in GetInfo() relies
// on it
wxLOCALE_SHORT_DATE_FMT,
wxLOCALE_LONG_DATE_FMT,
wxLOCALE_DATE_TIME_FMT,
wxLOCALE_TIME_FMT
};
// ----------------------------------------------------------------------------
// wxLocale: encapsulates all language dependent settings, including current
// message catalogs, date, time and currency formats (TODO) &c
// ----------------------------------------------------------------------------
enum wxLocaleInitFlags
{
wxLOCALE_DONT_LOAD_DEFAULT = 0x0000, // don't load wxwin.mo
wxLOCALE_LOAD_DEFAULT = 0x0001 // load wxwin.mo?
#if WXWIN_COMPATIBILITY_2_8
,wxLOCALE_CONV_ENCODING = 0x0002 // no longer used, simply remove
// it from the existing code
#endif
};
class WXDLLIMPEXP_BASE wxLocale
{
public:
// ctor & dtor
// -----------
// call Init() if you use this ctor
wxLocale() { DoCommonInit(); }
// the ctor has a side effect of changing current locale
wxLocale(const wxString& name, // name (for messages)
const wxString& shortName = wxEmptyString, // dir prefix (for msg files)
const wxString& locale = wxEmptyString, // locale (for setlocale)
bool bLoadDefault = true // preload wxstd.mo?
#if WXWIN_COMPATIBILITY_2_8
,bool bConvertEncoding = true // convert Win<->Unix if necessary?
#endif
)
{
DoCommonInit();
#if WXWIN_COMPATIBILITY_2_8
Init(name, shortName, locale, bLoadDefault, bConvertEncoding);
#else
Init(name, shortName, locale, bLoadDefault);
#endif
}
wxLocale(int language, // wxLanguage id or custom language
int flags = wxLOCALE_LOAD_DEFAULT)
{
DoCommonInit();
Init(language, flags);
}
// the same as a function (returns true on success)
bool Init(const wxString& name,
const wxString& shortName = wxEmptyString,
const wxString& locale = wxEmptyString,
bool bLoadDefault = true
#if WXWIN_COMPATIBILITY_2_8
,bool bConvertEncoding = true
#endif
);
// same as second ctor (returns true on success)
bool Init(int language = wxLANGUAGE_DEFAULT,
int flags = wxLOCALE_LOAD_DEFAULT);
// restores old locale
virtual ~wxLocale();
// Try to get user's (or OS's) preferred language setting.
// Return wxLANGUAGE_UNKNOWN if language-guessing algorithm failed
static int GetSystemLanguage();
// get the encoding used by default for text on this system, returns
// wxFONTENCODING_SYSTEM if it couldn't be determined
static wxFontEncoding GetSystemEncoding();
// get the string describing the system encoding, return empty string if
// couldn't be determined
static wxString GetSystemEncodingName();
// get the values of the given locale-dependent datum: the current locale
// is used, the US default value is returned if everything else fails
static wxString GetInfo(wxLocaleInfo index,
wxLocaleCategory cat = wxLOCALE_CAT_DEFAULT);
// Same as GetInfo() but uses current locale at the OS level to retrieve
// the information. Normally it should be the same as the one used by
// GetInfo() but there are two exceptions: the most important one is that
// if no locale had been set, GetInfo() would fall back to "C" locale,
// while this one uses the default OS locale. Another, more rare, one is
// that some locales might not supported by the OS.
//
// Currently this is the same as GetInfo() under non-MSW platforms.
static wxString GetOSInfo(wxLocaleInfo index,
wxLocaleCategory cat = wxLOCALE_CAT_DEFAULT);
// return true if the locale was set successfully
bool IsOk() const { return m_pszOldLocale != NULL; }
// returns locale name
const wxString& GetLocale() const { return m_strLocale; }
// return current locale wxLanguage value
int GetLanguage() const { return m_language; }
// return locale name to be passed to setlocale()
wxString GetSysName() const;
// return 'canonical' name, i.e. in the form of xx[_YY], where xx is
// language code according to ISO 639 and YY is country name
// as specified by ISO 3166.
wxString GetCanonicalName() const { return m_strShort; }
// add a prefix to the catalog lookup path: the message catalog files will be
// looked up under prefix/<lang>/LC_MESSAGES, prefix/LC_MESSAGES and prefix
// (in this order).
//
// This only applies to subsequent invocations of AddCatalog()!
static void AddCatalogLookupPathPrefix(const wxString& prefix)
{ wxFileTranslationsLoader::AddCatalogLookupPathPrefix(prefix); }
// add a catalog: it's searched for in standard places (current directory
// first, system one after), but the you may prepend additional directories to
// the search path with AddCatalogLookupPathPrefix().
//
// The loaded catalog will be used for message lookup by GetString().
//
// Returns 'true' if it was successfully loaded
bool AddCatalog(const wxString& domain);
bool AddCatalog(const wxString& domain, wxLanguage msgIdLanguage);
bool AddCatalog(const wxString& domain,
wxLanguage msgIdLanguage, const wxString& msgIdCharset);
// check if the given locale is provided by OS and C run time
static bool IsAvailable(int lang);
// check if the given catalog is loaded
bool IsLoaded(const wxString& domain) const;
// Retrieve the language info struct for the given language
//
// Returns NULL if no info found, pointer must *not* be deleted by caller
static const wxLanguageInfo *GetLanguageInfo(int lang);
// Returns language name in English or empty string if the language
// is not in database
static wxString GetLanguageName(int lang);
// Returns ISO code ("canonical name") of language or empty string if the
// language is not in database
static wxString GetLanguageCanonicalName(int lang);
// Find the language for the given locale string which may be either a
// canonical ISO 2 letter language code ("xx"), a language code followed by
// the country code ("xx_XX") or a Windows full language name ("Xxxxx...")
//
// Returns NULL if no info found, pointer must *not* be deleted by caller
static const wxLanguageInfo *FindLanguageInfo(const wxString& locale);
// Add custom language to the list of known languages.
// Notes: 1) wxLanguageInfo contains platform-specific data
// 2) must be called before Init to have effect
static void AddLanguage(const wxLanguageInfo& info);
// retrieve the translation for a string in all loaded domains unless
// the szDomain parameter is specified (and then only this domain is
// searched)
// n - additional parameter for PluralFormsParser
//
// return original string if translation is not available
// (in this case an error message is generated the first time
// a string is not found; use wxLogNull to suppress it)
//
// domains are searched in the last to first order, i.e. catalogs
// added later override those added before.
const wxString& GetString(const wxString& origString,
const wxString& domain = wxEmptyString) const
{
return wxGetTranslation(origString, domain);
}
// plural form version of the same:
const wxString& GetString(const wxString& origString,
const wxString& origString2,
unsigned n,
const wxString& domain = wxEmptyString) const
{
return wxGetTranslation(origString, origString2, n, domain);
}
// Returns the current short name for the locale
const wxString& GetName() const { return m_strShort; }
// return the contents of .po file header
wxString GetHeaderValue(const wxString& header,
const wxString& domain = wxEmptyString) const;
// These two methods are for internal use only. First one creates
// ms_languagesDB if it doesn't already exist, second one destroys
// it.
static void CreateLanguagesDB();
static void DestroyLanguagesDB();
private:
// This method is trivial and just updates the corresponding member
// variables without doing anything else.
void DoInit(const wxString& name,
const wxString& shortName,
int language);
// copy default table of languages from global static array to
// m_langugagesInfo, called by InitLanguagesDB
static void InitLanguagesDB();
// initialize the member fields to default values
void DoCommonInit();
// After trying to set locale, call this method to give the appropriate
// error if it couldn't be set (success == false) and to load the
// translations for the given language, if necessary.
//
// The return value is the same as "success" parameter.
bool DoCommonPostInit(bool success,
const wxString& name,
const wxString& shortName,
bool bLoadDefault);
wxString m_strLocale, // this locale name
m_strShort; // short name for the locale
int m_language; // this locale wxLanguage value
const char *m_pszOldLocale; // previous locale from setlocale()
wxLocale *m_pOldLocale; // previous wxLocale
bool m_initialized;
wxTranslations m_translations;
static wxLanguageInfoArray *ms_languagesDB;
wxDECLARE_NO_COPY_CLASS(wxLocale);
};
// ----------------------------------------------------------------------------
// global functions
// ----------------------------------------------------------------------------
// get the current locale object (note that it may be NULL!)
extern WXDLLIMPEXP_BASE wxLocale* wxGetLocale();
#endif // wxUSE_INTL
#endif // _WX_INTL_H_