222 lines
8.1 KiB
C++
222 lines
8.1 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <comphelper/officeresourcebundle.hxx>
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#include <com/sun/star/resource/XResourceBundle.hpp>
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#include <com/sun/star/resource/XResourceBundleLoader.hpp>
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#include <com/sun/star/lang/NullPointerException.hpp>
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#include <osl/mutex.hxx>
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#include <osl/diagnose.h>
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#include <rtl/ustrbuf.hxx>
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//........................................................................
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namespace comphelper
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{
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//........................................................................
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/** === begin UNO using === **/
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using ::com::sun::star::uno::Reference;
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using com::sun::star::resource::XResourceBundle;
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using com::sun::star::resource::XResourceBundleLoader;
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using com::sun::star::resource::MissingResourceException;
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using ::com::sun::star::uno::XComponentContext;
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using ::com::sun::star::lang::NullPointerException;
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using ::com::sun::star::uno::UNO_QUERY;
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using ::com::sun::star::uno::Exception;
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using ::com::sun::star::uno::Any;
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/** === end UNO using === **/
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//====================================================================
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//= ResourceBundle_Impl
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//====================================================================
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class ResourceBundle_Impl
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{
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private:
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Reference< XComponentContext > m_xContext;
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::rtl::OUString m_sBaseName;
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Reference< XResourceBundle > m_xBundle;
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bool m_bAttemptedCreate;
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mutable ::osl::Mutex m_aMutex;
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public:
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ResourceBundle_Impl( const Reference< XComponentContext >& _context, const ::rtl::OUString& _baseName )
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:m_xContext( _context )
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,m_sBaseName( _baseName )
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,m_bAttemptedCreate( false )
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{
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}
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public:
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/** loads the string with the given resource id from the resource bundle
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@param _resourceId
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the id of the string to load
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@return
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the requested resource string. If no string with the given id exists in the resource bundle,
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an empty string is returned. In a non-product version, an OSL_ENSURE will notify you of this
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then.
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*/
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::rtl::OUString loadString( sal_Int32 _resourceId ) const;
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/** determines whether the resource bundle has a string with the given id
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@param _resourceId
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the id of the string whose existence is to be checked
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@return
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<TRUE/> if and only if a string with the given ID exists in the resource
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bundle.
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*/
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bool hasString( sal_Int32 _resourceId ) const;
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private:
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/** loads the bundle represented by the instance
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The method is safe against multiple calls: If a previos call succeeded or failed, the
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previous result will be returned, without any other processing.
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@precond
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Our mutex is locked.
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*/
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bool impl_loadBundle_nothrow();
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/** returns the resource bundle key for a string with a given resource id
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*/
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static ::rtl::OUString
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impl_getStringResourceKey( sal_Int32 _resourceId );
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};
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//--------------------------------------------------------------------
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::rtl::OUString ResourceBundle_Impl::impl_getStringResourceKey( sal_Int32 _resourceId )
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{
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::rtl::OUStringBuffer key;
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key.appendAscii( "string:" );
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key.append( _resourceId );
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return key.makeStringAndClear();
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}
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//--------------------------------------------------------------------
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::rtl::OUString ResourceBundle_Impl::loadString( sal_Int32 _resourceId ) const
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{
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::osl::MutexGuard aGuard( m_aMutex );
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::rtl::OUString sString;
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if ( const_cast< ResourceBundle_Impl* >( this )->impl_loadBundle_nothrow() )
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{
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try
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{
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OSL_VERIFY( m_xBundle->getByName( impl_getStringResourceKey( _resourceId ) ) >>= sString );
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}
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catch( const Exception& )
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{
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OSL_FAIL( "ResourceBundle_Impl::loadString: caught an exception!" );
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}
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}
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return sString;
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}
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//--------------------------------------------------------------------
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bool ResourceBundle_Impl::hasString( sal_Int32 _resourceId ) const
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{
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::osl::MutexGuard aGuard( m_aMutex );
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bool has = false;
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if ( const_cast< ResourceBundle_Impl* >( this )->impl_loadBundle_nothrow() )
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{
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try
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{
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has = m_xBundle->hasByName( impl_getStringResourceKey( _resourceId ) );
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}
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catch( const Exception& )
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{
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OSL_FAIL( "ResourceBundle_Impl::hasString: caught an exception!" );
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}
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}
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return has;
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}
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//--------------------------------------------------------------------
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bool ResourceBundle_Impl::impl_loadBundle_nothrow()
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{
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if ( m_bAttemptedCreate )
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return m_xBundle.is();
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m_bAttemptedCreate = true;
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Reference< XResourceBundleLoader > xLoader;
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try
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{
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Any aValue( m_xContext->getValueByName(
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::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM(
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"/singletons/com.sun.star.resource.OfficeResourceLoader" ) ) ) );
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OSL_VERIFY( aValue >>= xLoader );
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}
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catch( const Exception& )
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{
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OSL_FAIL( "ResourceBundle_Impl::impl_loadBundle_nopthrow: could not create the resource loader!" );
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}
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if ( !xLoader.is() )
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return false;
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try
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{
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m_xBundle = xLoader->loadBundle_Default( m_sBaseName );
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}
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catch( const MissingResourceException& )
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{
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OSL_FAIL( "ResourceBundle_Impl::impl_loadBundle_nopthrow: missing the given resource bundle!" );
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}
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return m_xBundle.is();
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}
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//====================================================================
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//= OfficeResourceBundle
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//====================================================================
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//--------------------------------------------------------------------
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OfficeResourceBundle::OfficeResourceBundle( const Reference< XComponentContext >& _context, const sal_Char* _bundleBaseAsciiName )
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:m_pImpl( new ResourceBundle_Impl( _context, ::rtl::OUString::createFromAscii( _bundleBaseAsciiName ) ) )
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{
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if ( !_context.is() )
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throw NullPointerException();
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}
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//--------------------------------------------------------------------
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OfficeResourceBundle::~OfficeResourceBundle()
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{
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}
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//--------------------------------------------------------------------
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::rtl::OUString OfficeResourceBundle::loadString( sal_Int32 _resourceId ) const
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{
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return m_pImpl->loadString( _resourceId );
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}
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//--------------------------------------------------------------------
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bool OfficeResourceBundle::hasString( sal_Int32 _resourceId ) const
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{
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return m_pImpl->hasString( _resourceId );
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}
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//........................................................................
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} // namespace comphelper
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//........................................................................
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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