extensions/source/resource/ResourceIndexAccess.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #include <ResourceIndexAccess.hxx>
  11
  12 #include <com/sun/star/container/XIndexAccess.hpp>
  13 #include <com/sun/star/beans/PropertyValue.hpp>
  14 #include <com/sun/star/lang/IndexOutOfBoundsException.hpp>
  15 #include <cppuhelper/implbase.hxx>
  16 #include <osl/mutex.hxx>
  17 #include <tools/rcid.h>
  18 #include <tools/resary.hxx>
  19 #include <tools/resmgr.hxx>
  20 #include <vcl/svapp.hxx>
  21
  22 using namespace ::extensions::resource;
  23 using namespace ::com::sun::star::uno;
  24 using namespace ::com::sun::star::lang;
  25 using namespace ::com::sun::star::beans;
  26 using namespace ::com::sun::star::container;
  27
  28 namespace
  29 {
  30     std::shared_ptr<ResMgr> GetResMgr(Sequence<Any> const& rArgs)
  31     {
  32         if(rArgs.getLength()!=1)
  33             return std::shared_ptr<ResMgr>();
  34         OUString sFilename;
  35         rArgs[0] >>= sFilename;
  36         SolarMutexGuard aGuard;
  37         const OString sEncName(OUStringToOString(sFilename, osl_getThreadTextEncoding()));
  38         return std::shared_ptr<ResMgr>(ResMgr::CreateResMgr(sEncName.getStr()));
  39     }
  40
  41     class ResourceStringIndexAccess : public cppu::WeakImplHelper< css::container::XIndexAccess>
  42     {
  43         public:
  44             explicit ResourceStringIndexAccess(const std::shared_ptr<ResMgr>& pResMgr)
  45                 : m_pResMgr(pResMgr)
  46             {
  47                 OSL_ENSURE(m_pResMgr, "no resource manager given");
  48             }
  49
  50             // XIndexAccess
  51             virtual ::sal_Int32 SAL_CALL getCount(  ) override
  52                 { return m_pResMgr.get() ? SAL_MAX_UINT16 : 0; };
  53             virtual css::uno::Any SAL_CALL getByIndex( ::sal_Int32 Index ) override;
  54             // XElementAccess
  55             virtual sal_Bool SAL_CALL hasElements(  ) override
  56                 { return static_cast<bool>(m_pResMgr.get()); };
  57             virtual css::uno::Type SAL_CALL getElementType(  ) override
  58                 { return ::cppu::UnoType<OUString>::get(); };
  59         private:
  60             // m_pResMgr should never be NULL
  61             const std::shared_ptr<ResMgr> m_pResMgr;
  62     };
  63 }
  64
  65 ResourceIndexAccess::ResourceIndexAccess(Sequence<Any> const& rArgs, Reference<XComponentContext> const&)
  66     : m_pResMgr(GetResMgr(rArgs))
  67 {};
  68
  69 Any SAL_CALL ResourceIndexAccess::getByName(const OUString& aName)
  70 {
  71     const Sequence<OUString> aNames(getElementNames());
  72     Reference<XIndexAccess> xResult;
  73     switch(std::find(aNames.begin(), aNames.end(), aName) - aNames.begin())
  74     {
  75         case 0:
  76             xResult.set(new ResourceStringIndexAccess(m_pResMgr));
  77             break;
  78         default:
  79             throw NoSuchElementException();
  80     }
  81     return makeAny(xResult);
  82 }
  83
  84 Sequence<OUString> SAL_CALL ResourceIndexAccess::getElementNames(  )
  85 {
  86     static Sequence<OUString> aResult;
  87     if( aResult.getLength() == 0)
  88     {
  89         aResult.realloc(1);
  90         aResult[0] = "String";
  91     }
  92     return aResult;
  93 }
  94
  95 sal_Bool SAL_CALL ResourceIndexAccess::hasByName(const OUString& aName)
  96 {
  97     const Sequence<OUString> aNames(getElementNames());
  98     return (std::find(aNames.begin(), aNames.end(), aName) != aNames.end());
  99 }
 100
 101 Any SAL_CALL ResourceStringIndexAccess::getByIndex(sal_Int32 nIdx)
 102 {
 103     if(nIdx > SAL_MAX_UINT16 || nIdx < 0)
 104         throw IndexOutOfBoundsException();
 105     SolarMutexGuard aGuard;
 106     if(!m_pResMgr.get())
 107         throw RuntimeException("resource manager not available");
 108
 109     const ResId aId(static_cast<sal_uInt16>(nIdx), *m_pResMgr);
 110     aId.SetRT(RSC_STRING);
 111
 112     if(!m_pResMgr->IsAvailable(aId))
 113         throw RuntimeException("string resource for id not available");
 114
 115     return makeAny(aId.toString());
 116 }
 117
 118 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */