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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 <comphelper/officeresourcebundle.hxx>
#include <com/sun/star/resource/XResourceBundle.hpp>
#include <com/sun/star/resource/XResourceBundleLoader.hpp>
#include <com/sun/star/lang/NullPointerException.hpp>
#include <osl/mutex.hxx>
#include <osl/diagnose.h>
#include <rtl/ustrbuf.hxx>
//........................................................................
namespace comphelper
{
//........................................................................
using ::com::sun::star::uno::Reference;
using com::sun::star::resource::XResourceBundle;
using com::sun::star::resource::XResourceBundleLoader;
using com::sun::star::resource::MissingResourceException;
using ::com::sun::star::uno::XComponentContext;
using ::com::sun::star::lang::NullPointerException;
using ::com::sun::star::uno::UNO_QUERY;
using ::com::sun::star::uno::Exception;
using ::com::sun::star::uno::Any;
//====================================================================
//= ResourceBundle_Impl
//====================================================================
class ResourceBundle_Impl
{
private:
Reference< XComponentContext > m_xContext;
OUString m_sBaseName;
Reference< XResourceBundle > m_xBundle;
bool m_bAttemptedCreate;
mutable ::osl::Mutex m_aMutex;
public:
ResourceBundle_Impl( const Reference< XComponentContext >& _context, const OUString& _baseName )
:m_xContext( _context )
,m_sBaseName( _baseName )
,m_bAttemptedCreate( false )
{
}
public:
/** loads the string with the given resource id from the resource bundle
@param _resourceId
the id of the string to load
@return
the requested resource string. If no string with the given id exists in the resource bundle,
an empty string is returned. In a non-product version, an OSL_ENSURE will notify you of this
then.
*/
OUString loadString( sal_Int32 _resourceId ) const;
/** determines whether the resource bundle has a string with the given id
@param _resourceId
the id of the string whose existence is to be checked
@return
<TRUE/> if and only if a string with the given ID exists in the resource
bundle.
*/
bool hasString( sal_Int32 _resourceId ) const;
private:
/** loads the bundle represented by the instance
The method is safe against multiple calls: If a previos call succeeded or failed, the
previous result will be returned, without any other processing.
@precond
Our mutex is locked.
*/
bool impl_loadBundle_nothrow();
/** returns the resource bundle key for a string with a given resource id
*/
static OUString
impl_getStringResourceKey( sal_Int32 _resourceId );
};
OUString ResourceBundle_Impl::impl_getStringResourceKey( sal_Int32 _resourceId )
{
OUStringBuffer key;
key.appendAscii( "string:" );
key.append( _resourceId );
return key.makeStringAndClear();
}
OUString ResourceBundle_Impl::loadString( sal_Int32 _resourceId ) const
{
::osl::MutexGuard aGuard( m_aMutex );
OUString sString;
if ( const_cast< ResourceBundle_Impl* >( this )->impl_loadBundle_nothrow() )
{
try
{
OSL_VERIFY( m_xBundle->getByName( impl_getStringResourceKey( _resourceId ) ) >>= sString );
}
catch( const Exception& )
{
OSL_FAIL( "ResourceBundle_Impl::loadString: caught an exception!" );
}
}
return sString;
}
bool ResourceBundle_Impl::hasString( sal_Int32 _resourceId ) const
{
::osl::MutexGuard aGuard( m_aMutex );
bool has = false;
if ( const_cast< ResourceBundle_Impl* >( this )->impl_loadBundle_nothrow() )
{
try
{
has = m_xBundle->hasByName( impl_getStringResourceKey( _resourceId ) );
}
catch( const Exception& )
{
OSL_FAIL( "ResourceBundle_Impl::hasString: caught an exception!" );
}
}
return has;
}
bool ResourceBundle_Impl::impl_loadBundle_nothrow()
{
if ( m_bAttemptedCreate )
return m_xBundle.is();
m_bAttemptedCreate = true;
Reference< XResourceBundleLoader > xLoader;
try
{
Any aValue( m_xContext->getValueByName(
OUString( "/singletons/com.sun.star.resource.OfficeResourceLoader" ) ) );
OSL_VERIFY( aValue >>= xLoader );
}
catch( const Exception& )
{
OSL_FAIL( "ResourceBundle_Impl::impl_loadBundle_nopthrow: could not create the resource loader!" );
}
if ( !xLoader.is() )
return false;
try
{
m_xBundle = xLoader->loadBundle_Default( m_sBaseName );
}
catch( const MissingResourceException& )
{
OSL_FAIL( "ResourceBundle_Impl::impl_loadBundle_nopthrow: missing the given resource bundle!" );
}
return m_xBundle.is();
}
//====================================================================
//= OfficeResourceBundle
//====================================================================
OfficeResourceBundle::OfficeResourceBundle( const Reference< XComponentContext >& _context, const sal_Char* _bundleBaseAsciiName )
:m_pImpl( new ResourceBundle_Impl( _context, OUString::createFromAscii( _bundleBaseAsciiName ) ) )
{
if ( !_context.is() )
throw NullPointerException();
}
OfficeResourceBundle::~OfficeResourceBundle()
{
}
OUString OfficeResourceBundle::loadString( sal_Int32 _resourceId ) const
{
return m_pImpl->loadString( _resourceId );
}
bool OfficeResourceBundle::hasString( sal_Int32 _resourceId ) const
{
return m_pImpl->hasString( _resourceId );
}
//........................................................................
} // namespace comphelper
//........................................................................
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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