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Diffstat (limited to 'i18npool/source/inputchecker/inputsequencechecker.cxx')
| -rw-r--r-- | i18npool/source/inputchecker/inputsequencechecker.cxx | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/i18npool/source/inputchecker/inputsequencechecker.cxx b/i18npool/source/inputchecker/inputsequencechecker.cxx new file mode 100644 index 000000000..747b8c569 --- /dev/null +++ b/i18npool/source/inputchecker/inputsequencechecker.cxx @@ -0,0 +1,163 @@ +/* -*- 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 <inputsequencechecker.hxx> +#include <com/sun/star/i18n/InputSequenceCheckMode.hpp> +#include <com/sun/star/uno/XComponentContext.hpp> +#include <cppuhelper/supportsservice.hxx> +#include <i18nutil/unicode.hxx> + +using namespace ::com::sun::star::uno; +using namespace ::com::sun::star::i18n; +using namespace ::com::sun::star::lang; + +namespace i18npool { + +InputSequenceCheckerImpl::InputSequenceCheckerImpl( const Reference < XComponentContext >& rxContext ) : m_xContext( rxContext ) +{ + serviceName = "com.sun.star.i18n.InputSequenceChecker"; + cachedItem = nullptr; +} + +InputSequenceCheckerImpl::InputSequenceCheckerImpl(const char *pServiceName) + : serviceName(pServiceName) + , cachedItem(nullptr) +{ +} + +InputSequenceCheckerImpl::~InputSequenceCheckerImpl() +{ +} + +sal_Bool SAL_CALL +InputSequenceCheckerImpl::checkInputSequence(const OUString& Text, sal_Int32 nStartPos, + sal_Unicode inputChar, sal_Int16 inputCheckMode) +{ + if (inputCheckMode == InputSequenceCheckMode::PASSTHROUGH) + return true; + + char* language = getLanguageByScripType(Text[nStartPos], inputChar); + + if (language) + return getInputSequenceChecker(language)->checkInputSequence(Text, nStartPos, inputChar, inputCheckMode); + else + return true; // not a checkable languages. +} + +sal_Int32 SAL_CALL +InputSequenceCheckerImpl::correctInputSequence(OUString& Text, sal_Int32 nStartPos, + sal_Unicode inputChar, sal_Int16 inputCheckMode) +{ + if (inputCheckMode != InputSequenceCheckMode::PASSTHROUGH) { + char* language = getLanguageByScripType(Text[nStartPos], inputChar); + + if (language) + return getInputSequenceChecker(language)->correctInputSequence(Text, nStartPos, inputChar, inputCheckMode); + } + Text = Text.replaceAt(++nStartPos, 0, OUString(inputChar)); + return nStartPos; +} + +static ScriptTypeList const typeList[] = { + //{ UnicodeScript_kHebrew, UnicodeScript_kHebrew }, // 10, + //{ UnicodeScript_kArabic, UnicodeScript_kArabic }, // 11, + { UnicodeScript_kDevanagari, UnicodeScript_kDevanagari, sal_Int16(UnicodeScript_kDevanagari) }, // 14, + { UnicodeScript_kThai, UnicodeScript_kThai, sal_Int16(UnicodeScript_kThai) }, // 24, + + { UnicodeScript_kScriptCount, UnicodeScript_kScriptCount, sal_Int16(UnicodeScript_kScriptCount) } // 88 +}; + +char* +InputSequenceCheckerImpl::getLanguageByScripType(sal_Unicode cChar, sal_Unicode nChar) +{ + css::i18n::UnicodeScript type = static_cast<css::i18n::UnicodeScript>(unicode::getUnicodeScriptType( cChar, typeList, sal_Int16(UnicodeScript_kScriptCount) )); + + if (type != UnicodeScript_kScriptCount && + type == static_cast<css::i18n::UnicodeScript>(unicode::getUnicodeScriptType( nChar, typeList, sal_Int16(UnicodeScript_kScriptCount) ))) { + switch(type) { + case UnicodeScript_kThai: return const_cast<char*>("th"); + //case UnicodeScript_kArabic: return (char*)"ar"; + //case UnicodeScript_kHebrew: return (char*)"he"; + case UnicodeScript_kDevanagari: return const_cast<char*>("hi"); + default: break; + } + } + return nullptr; +} + +Reference< XExtendedInputSequenceChecker >& +InputSequenceCheckerImpl::getInputSequenceChecker(char const * rLanguage) +{ + if (cachedItem && cachedItem->aLanguage == rLanguage) { + return cachedItem->xISC; + } + else { + for (const auto& l : lookupTable) { + cachedItem = l.get(); + if (cachedItem->aLanguage == rLanguage) + return cachedItem->xISC; + } + + Reference < XInterface > xI = m_xContext->getServiceManager()->createInstanceWithContext( + "com.sun.star.i18n.InputSequenceChecker_" + + OUString::createFromAscii(rLanguage), + m_xContext); + + if ( xI.is() ) { + Reference< XExtendedInputSequenceChecker > xISC( xI, UNO_QUERY ); + if (xISC.is()) { + lookupTable.emplace_back(new lookupTableItem(rLanguage, xISC)); + cachedItem = lookupTable.back().get(); + return cachedItem->xISC; + } + } + } + throw RuntimeException(); +} + +OUString SAL_CALL +InputSequenceCheckerImpl::getImplementationName() +{ + return OUString::createFromAscii(serviceName); +} + +sal_Bool SAL_CALL +InputSequenceCheckerImpl::supportsService(const OUString& rServiceName) +{ + return cppu::supportsService(this, rServiceName); +} + +Sequence< OUString > SAL_CALL +InputSequenceCheckerImpl::getSupportedServiceNames() +{ + Sequence< OUString > aRet { OUString::createFromAscii(serviceName) }; + return aRet; +} + +} + +extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface * +com_sun_star_i18n_InputSequenceChecker_get_implementation( + css::uno::XComponentContext *context, + css::uno::Sequence<css::uno::Any> const &) +{ + return cppu::acquire(new i18npool::InputSequenceCheckerImpl(context)); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |