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 <osl/mutex.hxx>
  15 #include <tools/rcid.h>
  16 #include <tools/resary.hxx>
  17 #include <tools/resmgr.hxx>
  18 #include <vcl/svapp.hxx>
  19
  20 using namespace ::extensions::resource;
  21 using namespace ::com::sun::star::uno;
  22 using namespace ::com::sun::star::lang;
  23 using namespace ::com::sun::star::beans;
  24 using namespace ::com::sun::star::container;
  25
  26 namespace
  27 {
  28     static ::boost::shared_ptr<ResMgr> GetResMgr(Sequence<Any> const& rArgs)
  29     {
  30         if(rArgs.getLength()!=1)
  31             return ::boost::shared_ptr<ResMgr>();
  32         OUString sFilename;
  33         rArgs[0] >>= sFilename;
  34         SolarMutexGuard aGuard;
  35         const OString sEncName(OUStringToOString(sFilename, osl_getThreadTextEncoding()));
  36         return ::boost::shared_ptr<ResMgr>(ResMgr::CreateResMgr(sEncName.getStr()));
  37     }
  38
  39     class ResourceIndexAccessBase : public cppu::WeakImplHelper1< ::com::sun::star::container::XIndexAccess>
  40     {
  41         public:
  42             ResourceIndexAccessBase( ::boost::shared_ptr<ResMgr> pResMgr)
  43                 : m_pResMgr(pResMgr)
  44             {
  45                 OSL_ENSURE(m_pResMgr, "no resource manager given");
  46             }
  47
  48             // XIndexAccess
  49             virtual ::sal_Int32 SAL_CALL getCount(  ) throw (::com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE
  50                 { return m_pResMgr.get() ? SAL_MAX_UINT16 : 0; };
  51             // XElementAccess
  52             virtual sal_Bool SAL_CALL hasElements(  ) throw (::com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE
  53                 { return static_cast<bool>(m_pResMgr.get()); };
  54
  55         protected:
  56             // m_pResMgr should never be NULL
  57             const ::boost::shared_ptr<ResMgr> m_pResMgr;
  58     };
  59
  60     class ResourceStringIndexAccess : public ResourceIndexAccessBase
  61     {
  62         public:
  63             ResourceStringIndexAccess( ::boost::shared_ptr<ResMgr> pResMgr)
  64                 : ResourceIndexAccessBase(pResMgr) {}
  65             // XIndexAccess
  66             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;
  67             // XElementAccessBase
  68             virtual ::com::sun::star::uno::Type SAL_CALL getElementType(  ) throw (::com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE
  69                 { return ::cppu::UnoType<OUString>::get(); };
  70     };
  71
  72     class ResourceStringListIndexAccess : public ResourceIndexAccessBase
  73     {
  74         public:
  75             ResourceStringListIndexAccess( ::boost::shared_ptr<ResMgr> pResMgr)
  76                 : ResourceIndexAccessBase(pResMgr) {}
  77             // XIndexAccess
  78             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;
  79             // XElementAccessBase
  80             virtual ::com::sun::star::uno::Type SAL_CALL getElementType(  ) throw (::com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE
  81                 { return cppu::UnoType<Sequence<PropertyValue>>::get(); };
  82     };
  83 }
  84
  85 ResourceIndexAccess::ResourceIndexAccess(Sequence<Any> const& rArgs, Reference<XComponentContext> const&)
  86     : m_pResMgr(GetResMgr(rArgs))
  87 {};
  88
  89 Reference<XInterface> initResourceIndexAccess(ResourceIndexAccess* pResourceIndexAccess)
  90 {
  91     Reference<XInterface> xResult(static_cast<cppu::OWeakObject*>(pResourceIndexAccess));
  92     if(!pResourceIndexAccess->hasElements())
  93         // xResult does not help the client to analyse the problem
  94         // and will crash on getByIndex calls, better just give back an empty Reference
  95         // so that such ResourceStringIndexAccess instances are never release into the wild
  96         throw RuntimeException("resource manager could not get initialized");
  97     return xResult;
  98 }
  99
 100 Any SAL_CALL ResourceIndexAccess::getByName(const OUString& aName)
 101     throw (NoSuchElementException, WrappedTargetException, RuntimeException, std::exception)
 102 {
 103     const Sequence<OUString> aNames(getElementNames());
 104     Reference<XIndexAccess> xResult;
 105     switch(::std::find(aNames.begin(), aNames.end(), aName) - aNames.begin())
 106     {
 107         case 0:
 108             xResult = Reference<XIndexAccess>(new ResourceStringIndexAccess(m_pResMgr));
 109             break;
 110         case 1:
 111             xResult = Reference<XIndexAccess>(new ResourceStringListIndexAccess(m_pResMgr));
 112             break;
 113         default:
 114             throw NoSuchElementException();
 115     }
 116     return makeAny(xResult);
 117 }
 118
 119 Sequence<OUString> SAL_CALL ResourceIndexAccess::getElementNames(  )
 120     throw (RuntimeException, std::exception)
 121 {
 122     static Sequence<OUString> aResult;
 123     if( aResult.getLength() == 0)
 124     {
 125         aResult.realloc(2);
 126         aResult[0] = "String";
 127         aResult[1] = "StringList";
 128     }
 129     return aResult;
 130 }
 131
 132 sal_Bool SAL_CALL ResourceIndexAccess::hasByName(const OUString& aName)
 133     throw (RuntimeException, std::exception)
 134 {
 135     const Sequence<OUString> aNames(getElementNames());
 136     return (::std::find(aNames.begin(), aNames.end(), aName) != aNames.end());
 137 }
 138
 139 Any SAL_CALL ResourceStringIndexAccess::getByIndex(sal_Int32 nIdx)
 140     throw (IndexOutOfBoundsException, WrappedTargetException, RuntimeException, std::exception)
 141 {
 142     if(nIdx > SAL_MAX_UINT16 || nIdx < 0)
 143         throw IndexOutOfBoundsException();
 144     SolarMutexGuard aGuard;
 145     if(!m_pResMgr.get())
 146         throw RuntimeException("resource manager not available");
 147
 148     const ResId aId(static_cast<sal_uInt16>(nIdx), *m_pResMgr);
 149     aId.SetRT(RSC_STRING);
 150
 151     if(!m_pResMgr->IsAvailable(aId))
 152         throw RuntimeException("string resource for id not available");
 153
 154     return makeAny(aId.toString());
 155 }
 156
 157 Any SAL_CALL ResourceStringListIndexAccess::getByIndex(sal_Int32 nIdx)
 158     throw (IndexOutOfBoundsException, WrappedTargetException, RuntimeException, std::exception)
 159 {
 160     if(nIdx > SAL_MAX_UINT16 || nIdx < 0)
 161         throw IndexOutOfBoundsException();
 162     SolarMutexGuard aGuard;
 163
 164     if(!m_pResMgr.get())
 165         throw RuntimeException("resource manager not available");
 166
 167     const ResId aId(static_cast<sal_uInt16>(nIdx), *m_pResMgr);
 168     aId.SetRT(RSC_STRINGARRAY);
 169     if(!m_pResMgr->IsAvailable(aId))
 170         throw RuntimeException("string list resource for id not available");
 171     const ResStringArray aStringList(aId);
 172     Sequence<PropertyValue> aPropList(aStringList.Count());
 173     for(sal_Int32 nCount = 0; nCount != aPropList.getLength(); ++nCount)
 174     {
 175         aPropList[nCount].Name = aStringList.GetString(nCount);
 176         aPropList[nCount].Handle = -1;
 177         aPropList[nCount].Value <<= aStringList.GetValue(nCount);
 178         aPropList[nCount].State = PropertyState_DIRECT_VALUE;
 179     }
 180     return makeAny(aPropList);
 181 }
 182
 183 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */