xpackcreator.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#include <com/sun/star/ucb/XCommandEnvironment.hpp>
#include <com/sun/star/io/IOException.hpp>
#include <com/sun/star/io/XOutputStream.hpp>
#include <com/sun/star/embed/XPackageStructureCreator.hpp>
#include <com/sun/star/lang/XServiceInfo.hpp>
 
#include <comphelper/processfactory.hxx>
#include <cppuhelper/implbase.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <sot/stg.hxx>
#include <sot/storage.hxx>
#include <tools/stream.hxx>
#include <unotools/tempfile.hxx>
#include <unotools/ucbhelper.hxx>
#include <ucbhelper/content.hxx>
 
using namespace css;
 
namespace {
 
class OPackageStructureCreator : public ::cppu::WeakImplHelper< embed::XPackageStructureCreator,
                                                                lang::XServiceInfo >
{
public:
    OPackageStructureCreator() {}
 
    // XPackageStructureCreator
    virtual void SAL_CALL convertToPackage( const OUString& aFolderUrl, const uno::Reference< io::XOutputStream >& xTargetStream ) override;
 
    // XServiceInfo
    virtual OUString SAL_CALL getImplementationName() override;
    virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;
    virtual uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
};
 
 
void SAL_CALL OPackageStructureCreator::convertToPackage( const OUString& aFolderUrl,
                                                          const uno::Reference< io::XOutputStream >& xTargetStream )
{
    uno::Reference< ucb::XCommandEnvironment > xComEnv;
 
    if ( !xTargetStream.is() )
        throw io::IOException(); // TODO/LATER
 
    bool bSuccess = false;
    ::ucbhelper::Content aContent;
    if( ::ucbhelper::Content::create( aFolderUrl, xComEnv, comphelper::getProcessComponentContext(), aContent ) )
    {
        OUString aTempURL = ::utl::CreateTempURL();
        try {
            if ( aContent.isFolder() )
            {
                UCBStorage* pUCBStorage = new UCBStorage( aContent,
                                                          aFolderUrl,
                                                          StreamMode::READ,
                                                          false,
                                                          true );
                tools::SvRef<SotStorage> aStorage = new SotStorage( pUCBStorage );
 
                if ( !aTempURL.isEmpty() )
                {
                    SvFileStream aTempStream( aTempURL, StreamMode::STD_READWRITE );
                    tools::SvRef<SotStorage> aTargetStorage = new SotStorage( true, aTempStream );
                    aStorage->CopyTo( aTargetStorage.get() );
                    aTargetStorage->Commit();
 
                    if ( aStorage->GetError() || aTargetStorage->GetError() || aTempStream.GetError() )
                        throw io::IOException();
 
                    aTargetStorage = nullptr;
                    aStorage = nullptr;
 
                    aTempStream.Seek( 0 );
 
                    uno::Sequence< sal_Int8 > aSeq( 32000 );
                    sal_uInt32 nRead = 0;
                    do {
                        if ( aSeq.getLength() < 32000 )
                            aSeq.realloc( 32000 );
 
                        nRead = aTempStream.ReadBytes(aSeq.getArray(), 32000);
                        if ( nRead < 32000 )
                            aSeq.realloc( nRead );
                        xTargetStream->writeBytes( aSeq );
                    } while (aTempStream.good() && nRead);
 
                    if ( aTempStream.GetError() )
                        throw io::IOException();
 
                    bSuccess = true;
                }
            }
        }
        catch (const uno::RuntimeException&)
        {
            if ( !aTempURL.isEmpty() )
                ::utl::UCBContentHelper::Kill( aTempURL );
 
            throw;
        }
        catch (const io::IOException&)
        {
            if ( !aTempURL.isEmpty() )
                ::utl::UCBContentHelper::Kill( aTempURL );
 
            throw;
        }
        catch (const uno::Exception&)
        {
        }
 
        if ( !aTempURL.isEmpty() )
            ::utl::UCBContentHelper::Kill( aTempURL );
    }
 
    if ( !bSuccess )
        throw io::IOException(); // TODO/LATER: can't proceed with creation
}
 
OUString SAL_CALL OPackageStructureCreator::getImplementationName()
{
    return "com.sun.star.comp.embed.PackageStructureCreator";
}
 
sal_Bool SAL_CALL OPackageStructureCreator::supportsService( const OUString& ServiceName )
{
    return cppu::supportsService(this, ServiceName);
}
 
uno::Sequence< OUString > SAL_CALL OPackageStructureCreator::getSupportedServiceNames()
{
    return { "com.sun.star.embed.PackageStructureCreator", "com.sun.star.comp.embed.PackageStructureCreator" };
}
 
}
 
extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
com_sun_star_comp_embed_PackageStructureCreator_get_implementation(
    css::uno::XComponentContext *,
    css::uno::Sequence<css::uno::Any> const &)
{
    return cppu::acquire(new OPackageStructureCreator());
}
 
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