# Cppcheck report - LibreOffice: extensions/source/resource/ResourceIndexAccess.cxx

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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/.
     */

    #include <ResourceIndexAccess.hxx>

    #include <com/sun/star/container/XIndexAccess.hpp>
    #include <com/sun/star/beans/PropertyValue.hpp>
    #include <osl/mutex.hxx>
    #include <tools/rcid.h>
    #include <tools/resary.hxx>
    #include <tools/resmgr.hxx>
    #include <vcl/svapp.hxx>

    using namespace ::extensions::resource;
    using namespace ::com::sun::star::uno;
    using namespace ::com::sun::star::lang;
    using namespace ::com::sun::star::beans;
    using namespace ::com::sun::star::container;

    namespace
    {
        static ::boost::shared_ptr<ResMgr> GetResMgr(Sequence<Any> const& rArgs)
        {
            if(rArgs.getLength()!=1)
                return ::boost::shared_ptr<ResMgr>();
            OUString sFilename;
            rArgs[0] >>= sFilename;
            SolarMutexGuard aGuard;
            const OString sEncName(OUStringToOString(sFilename, osl_getThreadTextEncoding()));
            return ::boost::shared_ptr<ResMgr>(ResMgr::CreateResMgr(sEncName.getStr()));
        }

        class ResourceIndexAccessBase : public cppu::WeakImplHelper1< ::com::sun::star::container::XIndexAccess>
        {
            public:
                ResourceIndexAccessBase( ::boost::shared_ptr<ResMgr> pResMgr)
                    : m_pResMgr(pResMgr)
                {
                    OSL_ENSURE(m_pResMgr, "no resource manager given");
                }

                // XIndexAccess
                virtual ::sal_Int32 SAL_CALL getCount(  ) throw (::com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE
                    { return m_pResMgr.get() ? SAL_MAX_UINT16 : 0; };
                // XElementAccess
                virtual sal_Bool SAL_CALL hasElements(  ) throw (::com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE
                    { return static_cast<bool>(m_pResMgr.get()); };

            protected:
                // m_pResMgr should never be NULL
                const ::boost::shared_ptr<ResMgr> m_pResMgr;
        };

        class ResourceStringIndexAccess : public ResourceIndexAccessBase
        {
            public:
                ResourceStringIndexAccess( ::boost::shared_ptr<ResMgr> pResMgr)
                    : ResourceIndexAccessBase(pResMgr) {}
                // XIndexAccess
                virtual ::com::sun::star::uno::Any SAL_CALL getByIndex( ::sal_Int32 Index ) throw (::com::sun::star::lang::IndexOutOfBoundsException, ::com::sun::star::lang::WrappedTargetException, ::com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
                // XElementAccessBase
                virtual ::com::sun::star::uno::Type SAL_CALL getElementType(  ) throw (::com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE
                    { return ::cppu::UnoType<OUString>::get(); };
        };

        class ResourceStringListIndexAccess : public ResourceIndexAccessBase
        {
            public:
                ResourceStringListIndexAccess( ::boost::shared_ptr<ResMgr> pResMgr)
                    : ResourceIndexAccessBase(pResMgr) {}
                // XIndexAccess
                virtual ::com::sun::star::uno::Any SAL_CALL getByIndex( ::sal_Int32 Index ) throw (::com::sun::star::lang::IndexOutOfBoundsException, ::com::sun::star::lang::WrappedTargetException, ::com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
                // XElementAccessBase
                virtual ::com::sun::star::uno::Type SAL_CALL getElementType(  ) throw (::com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE
                    { return ::getCppuType(static_cast<Sequence<PropertyValue> * >(0)); };
        };
    }

    ResourceIndexAccess::ResourceIndexAccess(Sequence<Any> const& rArgs, Reference<XComponentContext> const&)
        : m_pResMgr(GetResMgr(rArgs))
    {};

    Reference<XInterface> initResourceIndexAccess(ResourceIndexAccess* pResourceIndexAccess)<--- The function 'initResourceIndexAccess' is never used.
    {
        Reference<XInterface> xResult(static_cast<cppu::OWeakObject*>(pResourceIndexAccess));
        if(!pResourceIndexAccess->hasElements())
            // xResult does not help the client to analyse the problem
            // and will crash on getByIndex calls, better just give back an empty Reference
            // so that such ResourceStringIndexAccess instances are never release into the wild
            throw RuntimeException("resource manager could not get initialized");
        return xResult;
    }

    Any SAL_CALL ResourceIndexAccess::getByName(const OUString& aName)
        throw (NoSuchElementException, WrappedTargetException, RuntimeException, std::exception)
    {
        const Sequence<OUString> aNames(getElementNames());
        Reference<XIndexAccess> xResult;
        switch(::std::find(aNames.begin(), aNames.end(), aName) - aNames.begin())
        {
            case 0:
                xResult = Reference<XIndexAccess>(new ResourceStringIndexAccess(m_pResMgr));
                break;
            case 1:
                xResult = Reference<XIndexAccess>(new ResourceStringListIndexAccess(m_pResMgr));
                break;
            default:
                throw NoSuchElementException();
        }
        return makeAny(xResult);
    }

    Sequence<OUString> SAL_CALL ResourceIndexAccess::getElementNames(  )
        throw (RuntimeException, std::exception)
    {
        static Sequence<OUString> aResult;
        if( aResult.getLength() == 0)
        {
            aResult.realloc(2);
            aResult[0] = "String";
            aResult[1] = "StringList";
        }
        return aResult;
    }

    sal_Bool SAL_CALL ResourceIndexAccess::hasByName(const OUString& aName)
        throw (RuntimeException, std::exception)
    {
        const Sequence<OUString> aNames(getElementNames());
        return (::std::find(aNames.begin(), aNames.end(), aName) != aNames.end());
    }

    Any SAL_CALL ResourceStringIndexAccess::getByIndex(sal_Int32 nIdx)
        throw (IndexOutOfBoundsException, WrappedTargetException, RuntimeException, std::exception)
    {
        if(nIdx > SAL_MAX_UINT16 || nIdx < 0)
            throw IndexOutOfBoundsException();
        SolarMutexGuard aGuard;
        if(!m_pResMgr.get())
            throw RuntimeException("resource manager not available");

        const ResId aId(static_cast<sal_uInt16>(nIdx), *m_pResMgr);
        aId.SetRT(RSC_STRING);

        if(!m_pResMgr->IsAvailable(aId))
            throw RuntimeException("string resource for id not available");

        return makeAny(aId.toString());
    }

    Any SAL_CALL ResourceStringListIndexAccess::getByIndex(sal_Int32 nIdx)
        throw (IndexOutOfBoundsException, WrappedTargetException, RuntimeException, std::exception)
    {
        if(nIdx > SAL_MAX_UINT16 || nIdx < 0)
            throw IndexOutOfBoundsException();
        SolarMutexGuard aGuard;

        if(!m_pResMgr.get())
            throw RuntimeException("resource manager not available");

        const ResId aId(static_cast<sal_uInt16>(nIdx), *m_pResMgr);
        aId.SetRT(RSC_STRINGARRAY);
        if(!m_pResMgr->IsAvailable(aId))
            throw RuntimeException("string list resource for id not available");
        const ResStringArray aStringList(aId);
        Sequence<PropertyValue> aPropList(aStringList.Count());
        for(sal_Int32 nCount = 0; nCount != aPropList.getLength(); ++nCount)
        {
            aPropList[nCount].Name = aStringList.GetString(nCount);
            aPropList[nCount].Handle = -1;
            aPropList[nCount].Value <<= aStringList.GetValue(nCount);
            aPropList[nCount].State = PropertyState_DIRECT_VALUE;
        }
        return makeAny(aPropList);
    }

    /* vim:set shiftwidth=4 softtabstop=4 expandtab: */