469 lines
15 KiB
C++
469 lines
15 KiB
C++
/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2008 by Sun Microsystems, Inc.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* $RCSfile: matchlocale.cxx,v $
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* $Revision: 1.11 $
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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// MARKER(update_precomp.py): autogen include statement, do not remove
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#include "precompiled_configmgr.hxx"
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#include "matchlocale.hxx"
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#include <rtl/ustrbuf.hxx>
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#include <algorithm>
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#include <iterator>
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namespace configmgr
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{
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// -----------------------------------------------------------------------------
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namespace localehelper
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{
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// -----------------------------------------------------------------------------
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using ::rtl::OUString;
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namespace uno = ::com::sun::star::uno;
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namespace lang = ::com::sun::star::lang;
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#define ARRAYSIZE( arr ) (sizeof(arr) / sizeof 0[arr] )
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// -----------------------------------------------------------------------------
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struct StaticLocale
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{
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typedef char const * String;
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String aLanguage;
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String aCountry;
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};
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StaticLocale::String const c_sAnyLanguage = "*"; // exported !
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StaticLocale::String const c_sDefLanguage = "x-default"; // exported !
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StaticLocale::String const c_sNoCountry = "";
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StaticLocale::String const c_sLanguageEnglish = "en";
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StaticLocale::String const c_sCountryUS = "US";
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StaticLocale const c_aFallbackLocales[] =
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{
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{ c_sLanguageEnglish, c_sCountryUS }, // english [cannot make 'en' better than 'en-US' :-(]
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{ c_sAnyLanguage, c_sNoCountry } // just take the first you find
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};
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SequencePos const c_nFallbackLocales = ARRAYSIZE(c_aFallbackLocales);
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// -----------------------------------------------------------------------------
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bool isAnyLanguage(OUString const & _sLanguage)
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{
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return !!_sLanguage.equalsAscii(c_sAnyLanguage);
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}
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// -----------------------------------------------------------------------------
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bool isDefaultLanguage(OUString const & _sLanguage)
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{
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return !!_sLanguage.equalsAscii(c_sDefLanguage);
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}
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// -----------------------------------------------------------------------------
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OUString getAnyLanguage()
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{
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return OUString::createFromAscii( c_sAnyLanguage );
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}
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// -----------------------------------------------------------------------------
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OUString getDefaultLanguage()
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{
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return OUString::createFromAscii( c_sDefLanguage );
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}
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// -----------------------------------------------------------------------------
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Locale getAnyLocale()
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{
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return Locale( getAnyLanguage(), OUString(), OUString() );
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}
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// -----------------------------------------------------------------------------
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Locale getDefaultLocale()
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{
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return Locale( getDefaultLanguage(), OUString(), OUString() );
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}
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// -----------------------------------------------------------------------------
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static inline sal_Int32 countrySeparatorPos(OUString const& aLocaleName_)
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{
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sal_Int32 pos = aLocaleName_.indexOf('-');
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if (pos == 1) // allow for x-LL or i-LL
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pos = aLocaleName_.indexOf('-',pos+1);
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if (pos < 0)
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pos = aLocaleName_.indexOf('_');
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return pos;
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}
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// -------------------------------------------------------------------------
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static inline sal_Int32 countryLength(OUString const& aLocaleName_, sal_Int32 nCountryPos)
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{
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sal_Int32 pos1 = aLocaleName_.indexOf('.',nCountryPos);
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sal_Int32 pos2 = aLocaleName_.indexOf('_',nCountryPos);
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if (pos1 < 0) pos1 = aLocaleName_.getLength();
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if (pos2 < 0 || pos1 < pos2)
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return pos1 - nCountryPos;
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else
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return pos2 - nCountryPos;
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}
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// -------------------------------------------------------------------------
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static inline void splitLocaleString(OUString const& aLocaleName_, OUString& rLanguage_, OUString& rCountry_)
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{
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sal_Int32 nCountryPos = countrySeparatorPos(aLocaleName_);
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if (nCountryPos >= 0)
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{
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rLanguage_ = aLocaleName_.copy(0,nCountryPos).toAsciiLowerCase();
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++nCountryPos; // advance past separator
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sal_Int32 nCountryLength = countryLength(aLocaleName_, nCountryPos);
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rCountry_ = aLocaleName_.copy(nCountryPos,nCountryLength).toAsciiUpperCase();
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}
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else
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{
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rLanguage_ = aLocaleName_.toAsciiLowerCase();
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rCountry_ = OUString();
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}
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}
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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// conversion helpers
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Locale makeLocale(OUString const& sLocaleName_)
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{
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Locale aResult;
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splitLocaleString(sLocaleName_, aResult.Language, aResult.Country);
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return aResult;
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}
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Locale makeLocale(Locale const& aLocale_) // normalizes the locale
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{
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return Locale( aLocale_.Language.toAsciiLowerCase(),
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aLocale_.Country .toAsciiUpperCase(),
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OUString() );
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}
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OUString makeIsoLocale(Locale const& aUnoLocale_)
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{
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rtl::OUStringBuffer aResult(aUnoLocale_.Language.toAsciiLowerCase());
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if (aUnoLocale_.Country.getLength())
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{
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aResult.append( sal_Unicode('-') ).append(aUnoLocale_.Country.toAsciiUpperCase());
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}
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return aResult.makeStringAndClear();
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}
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static
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Locale makeLocale(StaticLocale const& aConstLocale_)
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{
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Locale aResult;
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aResult.Language = OUString::createFromAscii(aConstLocale_.aLanguage);
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aResult.Country = OUString::createFromAscii(aConstLocale_.aCountry);
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return aResult;
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}
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// -----------------------------------------------------------------------------
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template <class T>
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inline
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void addLocaleSeq_impl(T const* first, T const* last, LocaleSequence& rSeq)
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{
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typedef Locale (* const XlateFunc)(T const&);
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XlateFunc xlate = &makeLocale;
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std::transform(first, last, std::back_inserter(rSeq), xlate);
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}
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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template <class T>
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inline
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LocaleSequence makeLocaleSeq_impl(uno::Sequence< T > const& aLocales_)
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{
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sal_Int32 const nLocaleCount = aLocales_.getLength();
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T const* pLocaleBegin = aLocales_.getConstArray();
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LocaleSequence aResult;
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aResult.reserve( nLocaleCount + c_nFallbackLocales ); // make room for fallback stuff as well
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addLocaleSeq_impl(pLocaleBegin, pLocaleBegin + nLocaleCount, aResult);
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return aResult;
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}
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// -----------------------------------------------------------------------------
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void addFallbackLocales(LocaleSequence& aTargetList_)
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{
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addLocaleSeq_impl(c_aFallbackLocales, c_aFallbackLocales + c_nFallbackLocales, aTargetList_);
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}
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// -----------------------------------------------------------------------------
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LocaleSequence makeLocaleSequence(uno::Sequence<OUString> const& sLocaleNames_)
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{
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return makeLocaleSeq_impl(sLocaleNames_);
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}
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LocaleSequence makeLocaleSequence(uno::Sequence<lang::Locale> const& aUnoLocales_)
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{
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return makeLocaleSeq_impl(aUnoLocales_);
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}
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// -----------------------------------------------------------------------------
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uno::Sequence<OUString> makeIsoSequence(LocaleSequence const& aLocales_)
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{
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LocaleSequence::size_type const nLocaleCount = aLocales_.size();
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sal_Int32 const nSeqSize = sal_Int32(nLocaleCount);
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OSL_ASSERT( nSeqSize >= 0 && sal_uInt32(nSeqSize) == nLocaleCount );
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uno::Sequence<OUString> aResult(nSeqSize);
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std::transform(aLocales_.begin(), aLocales_.end(), aResult.getArray(), &makeIsoLocale);
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return aResult;
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}
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uno::Sequence<Locale> makeUnoSequence(LocaleSequence const& aLocales_)
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{
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LocaleSequence::size_type const nLocaleCount = aLocales_.size();
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sal_Int32 const nSeqSize = sal_Int32(nLocaleCount);
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OSL_ASSERT( nSeqSize >= 0 && sal_uInt32(nSeqSize) == nLocaleCount );
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uno::Sequence<Locale> aResult( &aLocales_.front(), nSeqSize );
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return aResult;
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}
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// -----------------------------------------------------------------------------
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bool designatesAllLocales(Locale const& aLocale_)
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{
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return aLocale_.Language.equalsAscii(c_sAnyLanguage);
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}
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bool designatesAllLocales(LocaleSequence const& aLocales_)
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{
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return aLocales_.size() <= 1 &&
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(aLocales_.size() == 0 || designatesAllLocales(aLocales_));
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}
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// -----------------------------------------------------------------------------
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MatchQuality match(Locale const& aLocale_, Locale const& aTarget_)
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{
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// check language
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if (!aLocale_.Language.equals(aTarget_.Language))
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{
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// can we accept any language
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if (aTarget_.Language.equalsAscii(c_sAnyLanguage))
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return MATCH_LANGUAGE;
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return MISMATCH;
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}
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// check for exact match
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else if (aLocale_.Country.equals(aTarget_.Country))
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return MATCH_LOCALE;
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// check for plain language
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else if (aLocale_.Country.getLength() == 0)
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return MATCH_LANGUAGE_PLAIN;
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// so we are left with the wrong country
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else
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return MATCH_LANGUAGE;
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}
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// -----------------------------------------------------------------------------
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/// check the given position and quality, if they are an improvement
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bool MatchResult::improve(SequencePos nPos_, MatchQuality eQuality_)
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{
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// is this a match at all ?
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if (eQuality_ == MISMATCH)
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return false;
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// is the position worse ?
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if (nPos_ > m_nPos )
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return false;
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// is this just a non-positive quality change ?
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if (nPos_ == m_nPos && eQuality_ <= m_eQuality)
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return false;
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// Improvement found
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m_nPos = nPos_;
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m_eQuality = eQuality_;
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return true;
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}
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// -----------------------------------------------------------------------------
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MatchResult match(Locale const& aLocale_, LocaleSequence const& aTarget_)
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{
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SequencePos const nEnd = aTarget_.size();
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for (SequencePos nPos = 0; nPos < nEnd; ++nPos)
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{
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if (MatchQuality eQuality = match(aLocale_, aTarget_[nPos]))
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{
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return MatchResult(nPos,eQuality);
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}
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}
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return MatchResult();
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}
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// -----------------------------------------------------------------------------
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bool isMatch(Locale const& aLocale_, LocaleSequence const& aTarget_, MatchQuality eRequiredQuality_)
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{
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SequencePos const nEnd = aTarget_.size();
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for (SequencePos nPos = 0; nPos < nEnd; ++nPos)
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{
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MatchQuality eQuality = match(aLocale_, aTarget_[nPos]);
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if (eQuality >= eRequiredQuality_)
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{
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return true;
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}
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}
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return false;
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}
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// -----------------------------------------------------------------------------
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static
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inline
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SequencePos getSearchLimitPosition(MatchResult const& aPrevMatch_,LocaleSequence const& aTarget_)
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{
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SequencePos nSize = aTarget_.size();
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if (aPrevMatch_.isMatch())
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{
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SequencePos nMatchPos = aPrevMatch_.position();
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OSL_ENSURE(nMatchPos < nSize,"localehelper::getSearchLimitPosition: ERROR - previous position is out-of-bounds");
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if (nMatchPos < nSize)
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{
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return nMatchPos + 1;
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}
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}
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return nSize;
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}
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// -----------------------------------------------------------------------------
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bool improveMatch(MatchResult& rMatch_, Locale const& aLocale_, LocaleSequence const& aTarget_)
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{
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SequencePos const nEnd = getSearchLimitPosition(rMatch_,aTarget_);
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for (SequencePos nPos = 0; nPos < nEnd; ++nPos)
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{
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if (rMatch_.improve(nPos, match(aLocale_, aTarget_[nPos])))
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{
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return true;
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}
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}
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return false;
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}
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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// class FindBestLocale
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// -----------------------------------------------------------------------------
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inline
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void FindBestLocale::implSetTarget(LocaleSequence const& aTarget_)
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{
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m_aTarget = aTarget_;
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addFallbackLocales(m_aTarget);
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}
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// -----------------------------------------------------------------------------
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FindBestLocale::FindBestLocale() // use only fallbacks !
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{
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LocaleSequence aSeq;
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implSetTarget( aSeq );
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}
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// -----------------------------------------------------------------------------
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FindBestLocale::FindBestLocale(Locale const& aTarget_)
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{
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LocaleSequence aSeq(1,aTarget_);
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implSetTarget( aSeq );
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}
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// -----------------------------------------------------------------------------
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FindBestLocale::FindBestLocale(LocaleSequence const& aTarget_)
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{
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implSetTarget( aTarget_ );
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}
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// -----------------------------------------------------------------------------
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Locale FindBestLocale::getBestMatch() const
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{
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OSL_ENSURE(this->isMatch(), "FindBestLocale::getBestMatch(): ERROR - no match found");
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if (this->isMatch())
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{
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OSL_ENSURE(m_aResult.position() < m_aTarget.size(), "FindBestLocale::getBestMatch(): ERROR - invalid match position");
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return m_aTarget[m_aResult.position()];
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}
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else
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{
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return Locale();
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}
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}
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// -----------------------------------------------------------------------------
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bool FindBestLocale::accept(Locale const& aLocale_)
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{
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return improveMatch(m_aResult, aLocale_, m_aTarget);
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}
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// -----------------------------------------------------------------------------
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void FindBestLocale::reset(Locale const& aTarget_)
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{
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LocaleSequence aSeq(1,aTarget_);
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this->reset(aSeq);
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}
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// -----------------------------------------------------------------------------
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void FindBestLocale::reset(LocaleSequence const& aTarget_)
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{
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implSetTarget(aTarget_);
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m_aResult.reset();
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}
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// -----------------------------------------------------------------------------
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void FindBestLocale::reset(bool bNeedLocale_)
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{
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if (bNeedLocale_)
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m_aResult.reset();
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else // mark as best match already (no improvement possible)
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m_aResult = m_aResult.best();
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}
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// -----------------------------------------------------------------------------
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} // namespace locale helper
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// -----------------------------------------------------------------------------
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} // namespace
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