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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 .
*/
#include <iostream>
#include <string_view>
#include <osl/file.hxx>
#include <tools/debug.hxx>
#include <sal/config.h>
#include <cppuhelper/factory.hxx>
#include <cppuhelper/implementationentry.hxx>
#include <cppuhelper/implbase.hxx>
#include <cppuhelper/supportsservice.hxx>
#include "simpleguesser.hxx"
#include "guess.hxx"
#include <com/sun/star/lang/IllegalArgumentException.hpp>
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/linguistic2/XLanguageGuessing.hpp>
#include <unotools/pathoptions.hxx>
#include <osl/thread.h>
#include <sal/macros.h>
#ifdef SYSTEM_LIBEXTTEXTCAT
#include <libexttextcat/textcat.h>
#else
#include <textcat.h>
#endif
using namespace ::std;
using namespace ::osl;
using namespace ::cppu;
using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::linguistic2;
static osl::Mutex & GetLangGuessMutex()
{
static osl::Mutex aMutex;
return aMutex;
}
namespace {
class LangGuess_Impl :
public ::cppu::WeakImplHelper<
XLanguageGuessing,
XServiceInfo >
{
SimpleGuesser m_aGuesser;
bool m_bInitialized;
virtual ~LangGuess_Impl() override {}
void EnsureInitialized();
public:
LangGuess_Impl();
LangGuess_Impl(const LangGuess_Impl&) = delete;
LangGuess_Impl& operator=(const LangGuess_Impl&) = delete;
// XServiceInfo implementation
virtual OUString SAL_CALL getImplementationName( ) override;
virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;
virtual Sequence< OUString > SAL_CALL getSupportedServiceNames( ) override;
// XLanguageGuessing implementation
virtual css::lang::Locale SAL_CALL guessPrimaryLanguage( const OUString& aText, ::sal_Int32 nStartPos, ::sal_Int32 nLen ) override;
virtual void SAL_CALL disableLanguages( const css::uno::Sequence< css::lang::Locale >& aLanguages ) override;
virtual void SAL_CALL enableLanguages( const css::uno::Sequence< css::lang::Locale >& aLanguages ) override;
virtual css::uno::Sequence< css::lang::Locale > SAL_CALL getAvailableLanguages( ) override;
virtual css::uno::Sequence< css::lang::Locale > SAL_CALL getEnabledLanguages( ) override;
virtual css::uno::Sequence< css::lang::Locale > SAL_CALL getDisabledLanguages( ) override;
// implementation specific
/// @throws RuntimeException
void SetFingerPrintsDB( std::u16string_view fileName );
};
}
LangGuess_Impl::LangGuess_Impl() :
m_bInitialized( false )
{
}
void LangGuess_Impl::EnsureInitialized()
{
if (m_bInitialized)
return;
// set this to true at the very start to prevent loops because of
// implicitly called functions below
m_bInitialized = true;
// set default fingerprint path to where those get installed
OUString aPhysPath;
OUString aURL( SvtPathOptions().GetFingerprintPath() );
osl::FileBase::getSystemPathFromFileURL( aURL, aPhysPath );
#ifdef _WIN32
aPhysPath += "\\";
#else
aPhysPath += "/";
#endif
SetFingerPrintsDB( aPhysPath );
#if !defined(EXTTEXTCAT_VERSION_MAJOR)
// disable currently not functional languages...
struct LangCountry
{
const char *pLang;
const char *pCountry;
};
LangCountry aDisable[] =
{
// not functional in modified libtextcat, but fixed in >= libexttextcat 3.1.0
// which is the first with EXTTEXTCAT_VERSION_MAJOR defined
{"sco", ""}, {"zh", "CN"}, {"zh", "TW"}, {"ja", ""}, {"ko", ""},
{"ka", ""}, {"hi", ""}, {"mr", ""}, {"ne", ""}, {"sa", ""},
{"ta", ""}, {"th", ""}, {"qu", ""}, {"yi", ""}
};
sal_Int32 nNum = SAL_N_ELEMENTS(aDisable);
Sequence< Locale > aDisableSeq( nNum );
Locale *pDisableSeq = aDisableSeq.getArray();
for (sal_Int32 i = 0; i < nNum; ++i)
{
Locale aLocale;
aLocale.Language = OUString::createFromAscii( aDisable[i].pLang );
aLocale.Country = OUString::createFromAscii( aDisable[i].pCountry );
pDisableSeq[i] = aLocale;
}
disableLanguages( aDisableSeq );
DBG_ASSERT( nNum == getDisabledLanguages().getLength(), "size mismatch" );
#endif
}
Locale SAL_CALL LangGuess_Impl::guessPrimaryLanguage(
const OUString& rText,
::sal_Int32 nStartPos,
::sal_Int32 nLen )
{
osl::MutexGuard aGuard( GetLangGuessMutex() );
EnsureInitialized();
if (nStartPos < 0 || nLen < 0 || nStartPos + nLen > rText.getLength())
throw lang::IllegalArgumentException();
OString o( OUStringToOString( rText.subView(nStartPos, nLen), RTL_TEXTENCODING_UTF8 ) );
Guess g = m_aGuesser.GuessPrimaryLanguage(o.getStr());
lang::Locale aRes;
aRes.Language = OUString::createFromAscii( g.GetLanguage().c_str() );
aRes.Country = OUString::createFromAscii( g.GetCountry().c_str() );
return aRes;
}
#define DEFAULT_CONF_FILE_NAME "fpdb.conf"
void LangGuess_Impl::SetFingerPrintsDB(
std::u16string_view filePath )
{
//! text encoding for file name / path needs to be in the same encoding the OS uses
OString path = OUStringToOString( filePath, osl_getThreadTextEncoding() );
OString conf_file_path = path + DEFAULT_CONF_FILE_NAME;
m_aGuesser.SetDBPath(conf_file_path.getStr(), path.getStr());
}
uno::Sequence< Locale > SAL_CALL LangGuess_Impl::getAvailableLanguages( )
{
osl::MutexGuard aGuard( GetLangGuessMutex() );
EnsureInitialized();
Sequence< css::lang::Locale > aRes;
vector<Guess> gs = m_aGuesser.GetAllManagedLanguages();
aRes.realloc(gs.size());
css::lang::Locale *pRes = aRes.getArray();
for(size_t i = 0; i < gs.size() ; i++ ){
css::lang::Locale current_aRes;
current_aRes.Language = OUString::createFromAscii( gs[i].GetLanguage().c_str() );
current_aRes.Country = OUString::createFromAscii( gs[i].GetCountry().c_str() );
pRes[i] = current_aRes;
}
return aRes;
}
uno::Sequence< Locale > SAL_CALL LangGuess_Impl::getEnabledLanguages( )
{
osl::MutexGuard aGuard( GetLangGuessMutex() );
EnsureInitialized();
Sequence< css::lang::Locale > aRes;
vector<Guess> gs = m_aGuesser.GetAvailableLanguages();
aRes.realloc(gs.size());
css::lang::Locale *pRes = aRes.getArray();
for(size_t i = 0; i < gs.size() ; i++ ){
css::lang::Locale current_aRes;
current_aRes.Language = OUString::createFromAscii( gs[i].GetLanguage().c_str() );
current_aRes.Country = OUString::createFromAscii( gs[i].GetCountry().c_str() );
pRes[i] = current_aRes;
}
return aRes;
}
uno::Sequence< Locale > SAL_CALL LangGuess_Impl::getDisabledLanguages( )
{
osl::MutexGuard aGuard( GetLangGuessMutex() );
EnsureInitialized();
Sequence< css::lang::Locale > aRes;
vector<Guess> gs = m_aGuesser.GetUnavailableLanguages();
aRes.realloc(gs.size());
css::lang::Locale *pRes = aRes.getArray();
for(size_t i = 0; i < gs.size() ; i++ ){
css::lang::Locale current_aRes;
current_aRes.Language = OUString::createFromAscii( gs[i].GetLanguage().c_str() );
current_aRes.Country = OUString::createFromAscii( gs[i].GetCountry().c_str() );
pRes[i] = current_aRes;
}
return aRes;
}
void SAL_CALL LangGuess_Impl::disableLanguages(
const uno::Sequence< Locale >& rLanguages )
{
osl::MutexGuard aGuard( GetLangGuessMutex() );
EnsureInitialized();
for (const Locale& rLanguage : rLanguages)
{
string language;
OString l = OUStringToOString( rLanguage.Language, RTL_TEXTENCODING_ASCII_US );
OString c = OUStringToOString( rLanguage.Country, RTL_TEXTENCODING_ASCII_US );
language += l.getStr();
language += "-";
language += c.getStr();
m_aGuesser.DisableLanguage(language);
}
}
void SAL_CALL LangGuess_Impl::enableLanguages(
const uno::Sequence< Locale >& rLanguages )
{
osl::MutexGuard aGuard( GetLangGuessMutex() );
EnsureInitialized();
for (const Locale& rLanguage : rLanguages)
{
string language;
OString l = OUStringToOString( rLanguage.Language, RTL_TEXTENCODING_ASCII_US );
OString c = OUStringToOString( rLanguage.Country, RTL_TEXTENCODING_ASCII_US );
language += l.getStr();
language += "-";
language += c.getStr();
m_aGuesser.EnableLanguage(language);
}
}
OUString SAL_CALL LangGuess_Impl::getImplementationName( )
{
return "com.sun.star.lingu2.LanguageGuessing";
}
sal_Bool SAL_CALL LangGuess_Impl::supportsService( const OUString& ServiceName )
{
return cppu::supportsService(this, ServiceName);
}
Sequence<OUString> SAL_CALL LangGuess_Impl::getSupportedServiceNames( )
{
return { "com.sun.star.linguistic2.LanguageGuessing" };
}
extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
lingucomponent_LangGuess_get_implementation(
css::uno::XComponentContext* , css::uno::Sequence<css::uno::Any> const&)
{
return cppu::acquire(new LangGuess_Impl());
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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