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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#define UNICODE
#ifdef _MSC_VER
#pragma warning(push,1) /* disable warnings within system headers */
#endif
#include <windows.h>
#ifdef _MSC_VER
#pragma warning(pop)
#endif
#include <wchar.h>
#include <osl/mutex.h>
#include <osl/nlsupport.h>
#include <osl/diagnose.h>
#include <osl/process.h>
#include <rtl/tencinfo.h>
/* XXX NOTE:
* http://msdn.microsoft.com/en-us/library/windows/desktop/dd373848.aspx
* (retrieved 2013-02-13) has some weird description for the LOCALE_SISO*
* constants: "The maximum number of characters allowed for this string is
* nine, including a terminating null character." NINE?!? In ISO 639 and ISO
* 3166?
*/
#define ELP_LANGUAGE_FIELD_LENGTH 4
#define ELP_COUNTRY_FIELD_LENGTH 3
/** Struct used in EnumLocalesProcA() called via EnumSystemLocalesA() to obtain
available locales.
*/
struct EnumLocalesParams
{
WCHAR Language[ELP_LANGUAGE_FIELD_LENGTH];
WCHAR Country[ELP_COUNTRY_FIELD_LENGTH];
LCID Locale;
};
static DWORD g_dwTLSLocaleEncId = (DWORD) -1;
/*****************************************************************************
* callback function test
*
* osl_getTextEncodingFromLocale calls EnumSystemLocalesA, so that we don't
* need to provide a unicode wrapper for this function under Win9x
* that means the callback function has an ansi prototype and receives
* the locale strings as ansi strings
*****************************************************************************/
BOOL CALLBACK EnumLocalesProcA( LPSTR lpLocaleStringA )
{
struct EnumLocalesParams * params;
LCID localeId;
LPSTR pszEndA;
WCHAR langCode[ELP_LANGUAGE_FIELD_LENGTH];
/* convert hex-string to LCID */
localeId = strtol( lpLocaleStringA, &pszEndA, 16 );
/* check params received via TLS */
params = (struct EnumLocalesParams *) TlsGetValue( g_dwTLSLocaleEncId );
if( NULL == params || '\0' == params->Language[0] )
return FALSE;
/*
get the ISO language code for this locale
remember: we call the GetLocaleInfoW function
because the ansi version of this function returns
an error under WinNT/2000 when called with an
unicode only lcid
*/
if( GetLocaleInfo( localeId, LOCALE_SISO639LANGNAME , langCode, ELP_LANGUAGE_FIELD_LENGTH ) )
{
WCHAR ctryCode[ELP_COUNTRY_FIELD_LENGTH];
/* continue if language code does not match */
if( 0 != wcscmp( langCode, params->Language ) )
return TRUE;
/* check if country code is set and equals the current locale */
if( '\0' != params->Country[0] && GetLocaleInfo( localeId,
LOCALE_SISO3166CTRYNAME , ctryCode, ELP_COUNTRY_FIELD_LENGTH ) )
{
/* save return value in TLS and break if found desired locale */
if( 0 == wcscmp( ctryCode, params->Country ) )
{
params->Locale = localeId;
return FALSE;
}
}
else
{
/* fill with default values for that language */
LANGID langId = LANGIDFROMLCID( localeId );
/* exchange sublanguage with SUBLANG_NEUTRAL */
langId = MAKELANGID( PRIMARYLANGID( langId ), SUBLANG_NEUTRAL );
/* and use default sorting order */
params->Locale = MAKELCID( langId, SORT_DEFAULT );
return FALSE;
}
}
/* retry by going on */
return TRUE;
}
/*****************************************************************************
* GetTextEncodingFromLCID
*****************************************************************************/
rtl_TextEncoding GetTextEncodingFromLCID( LCID localeId )
{
rtl_TextEncoding Encoding = RTL_TEXTENCODING_DONTKNOW;
WCHAR ansiCP[6];
/* query ansi codepage for given locale */
if( localeId && GetLocaleInfo( localeId, LOCALE_IDEFAULTANSICODEPAGE, ansiCP, 6 ) )
{
/* if GetLocaleInfo returns "0", it is a UNICODE only locale */
if( 0 != wcscmp( ansiCP, L"0" ) )
{
WCHAR *pwcEnd;
UINT codepage;
/* values returned from GetLocaleInfo are dezimal based */
codepage = wcstol( ansiCP, &pwcEnd, 10 );
/* find matching rtl encoding */
Encoding = rtl_getTextEncodingFromWindowsCodePage( codepage );
}
else
Encoding = RTL_TEXTENCODING_UNICODE;
}
return Encoding;
}
/*****************************************************************************
* osl_getTextEncodingFromLocale
*****************************************************************************/
rtl_TextEncoding SAL_CALL osl_getTextEncodingFromLocale( rtl_Locale * pLocale )
{
struct EnumLocalesParams params = { L"", L"", 0 };
/* initialise global TLS id */
if( (DWORD) -1 == g_dwTLSLocaleEncId )
{
oslMutex globalMutex = * osl_getGlobalMutex();
/* initializing must be thread save */
osl_acquireMutex( globalMutex );
if( (DWORD) -1 == g_dwTLSLocaleEncId )
g_dwTLSLocaleEncId = TlsAlloc();
osl_releaseMutex( globalMutex );
}
/* if pLocale is NULL, use process locale as default */
if( NULL == pLocale )
osl_getProcessLocale( &pLocale );
/* copy in parameters to structure */
if( pLocale && pLocale->Language && pLocale->Language->length < ELP_LANGUAGE_FIELD_LENGTH )
{
wcscpy( params.Language, pLocale->Language->buffer );
if( pLocale->Country && pLocale->Country->length < ELP_COUNTRY_FIELD_LENGTH )
wcscpy( params.Country, pLocale->Country->buffer );
/* save pointer to local structure in TLS */
TlsSetValue( g_dwTLSLocaleEncId, ¶ms );
/* enum all locales known to Windows */
EnumSystemLocalesA( EnumLocalesProcA, LCID_SUPPORTED );
/* use the LCID found in iteration */
return GetTextEncodingFromLCID( params.Locale );
}
return RTL_TEXTENCODING_DONTKNOW;
}
/*****************************************************************************
* imp_getProcessLocale
*****************************************************************************/
void _imp_getProcessLocale( rtl_Locale ** ppLocale )
{
WCHAR langCode[ELP_LANGUAGE_FIELD_LENGTH];
WCHAR ctryCode[ELP_COUNTRY_FIELD_LENGTH];
LCID localeId;
OSL_ASSERT( ppLocale );
/* get the LCID to retrieve information from */
localeId = GetUserDefaultLCID();
/* call GetLocaleInfo to retrieve the iso codes */
if( GetLocaleInfo( localeId, LOCALE_SISO639LANGNAME , langCode, ELP_LANGUAGE_FIELD_LENGTH ) &&
GetLocaleInfo( localeId, LOCALE_SISO3166CTRYNAME , ctryCode, ELP_COUNTRY_FIELD_LENGTH ) )
{
*ppLocale = rtl_locale_register( langCode, ctryCode, L"" );
}
else
{
*ppLocale = rtl_locale_register( L"C", L"", L"" );
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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