package/source/xstor/oseekinstream.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_package.hxx"
  33 #include <com/sun/star/lang/DisposedException.hpp>
  34 #include <cppuhelper/typeprovider.hxx>
  35 #include <osl/diagnose.h>
  36
  37 #include "oseekinstream.hxx"
  38 #include "owriteablestream.hxx"
  39
  40 using namespace ::com::sun::star;
  41
  42 OInputSeekStream::OInputSeekStream( OWriteStream_Impl& pImpl,
  43                                                                         uno::Reference < io::XInputStream > xStream,
  44                                                                         const uno::Sequence< beans::PropertyValue >& aProps,
  45                                                                         sal_Int16 nStorageType )
  46 : OInputCompStream( pImpl, xStream, aProps, nStorageType )
  47 {
  48         if ( m_xStream.is() )
  49         {
  50                 m_xSeekable = uno::Reference< io::XSeekable >( m_xStream, uno::UNO_QUERY );
  51                 OSL_ENSURE( m_xSeekable.is(), "No seeking support!\n" );
  52         }
  53 }
  54
  55 OInputSeekStream::OInputSeekStream( uno::Reference < io::XInputStream > xStream,
  56                                                                         const uno::Sequence< beans::PropertyValue >& aProps,
  57                                                                         sal_Int16 nStorageType )
  58 : OInputCompStream( xStream, aProps, nStorageType )
  59 {
  60         if ( m_xStream.is() )
  61         {
  62                 m_xSeekable = uno::Reference< io::XSeekable >( m_xStream, uno::UNO_QUERY );
  63                 OSL_ENSURE( m_xSeekable.is(), "No seeking support!\n" );
  64         }
  65 }
  66
  67 OInputSeekStream::~OInputSeekStream()
  68 {
  69 }
  70
  71 uno::Sequence< uno::Type > SAL_CALL OInputSeekStream::getTypes()
  72                 throw ( uno::RuntimeException )
  73 {
  74         static ::cppu::OTypeCollection* pTypeCollection = NULL ;
  75
  76         if ( pTypeCollection == NULL )
  77         {
  78                 ::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() ) ;
  79
  80                 if ( pTypeCollection == NULL )
  81                 {
  82                         static ::cppu::OTypeCollection aTypeCollection(
  83                         ::getCppuType(( const uno::Reference< io::XSeekable >* )NULL ),
  84                                         OInputCompStream::getTypes() );
  85
  86                         pTypeCollection = &aTypeCollection ;
  87                 }
  88         }
  89
  90         return pTypeCollection->getTypes() ;
  91 }
  92
  93 uno::Any SAL_CALL OInputSeekStream::queryInterface( const uno::Type& rType )
  94                 throw( uno::RuntimeException )
  95 {
  96         // Attention:
  97         //      Don't use mutex or guard in this method!!! Is a method of XInterface.
  98
  99         uno::Any aReturn( ::cppu::queryInterface( rType,
 100                                                                                 static_cast< io::XSeekable* >( this ) ) );
 101
 102         if ( aReturn.hasValue() == sal_True )
 103         {
 104                 return aReturn ;
 105         }
 106
 107         return OInputCompStream::queryInterface( rType ) ;
 108 }
 109
 110 void SAL_CALL OInputSeekStream::acquire()
 111                 throw()
 112 {
 113         OInputCompStream::acquire();
 114 }
 115
 116 void SAL_CALL OInputSeekStream::release()
 117                 throw()
 118 {
 119         OInputCompStream::release();
 120 }
 121
 122
 123 void SAL_CALL OInputSeekStream::seek( sal_Int64 location )
 124                 throw ( lang::IllegalArgumentException,
 125                                 io::IOException,
 126                                 uno::RuntimeException )
 127 {
 128         ::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
 129         if ( m_bDisposed )
 130                 throw lang::DisposedException();
 131
 132         if ( !m_xSeekable.is() )
 133                 throw uno::RuntimeException();
 134
 135         m_xSeekable->seek( location );
 136 }
 137
 138 sal_Int64 SAL_CALL OInputSeekStream::getPosition()
 139                 throw ( io::IOException,
 140                                 uno::RuntimeException)
 141 {
 142         ::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
 143         if ( m_bDisposed )
 144                 throw lang::DisposedException();
 145
 146         if ( !m_xSeekable.is() )
 147                 throw uno::RuntimeException();
 148
 149         return m_xSeekable->getPosition();
 150 }
 151
 152 sal_Int64 SAL_CALL OInputSeekStream::getLength()
 153                 throw ( io::IOException,
 154                                 uno::RuntimeException )
 155 {
 156         ::osl::MutexGuard aGuard( m_rMutexRef->GetMutex() );
 157         if ( m_bDisposed )
 158                 throw lang::DisposedException();
 159
 160         if ( !m_xSeekable.is() )
 161                 throw uno::RuntimeException();
 162
 163         return m_xSeekable->getLength();
 164 }
 165