svl/source/items/lckbitem.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  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <svl/lckbitem.hxx>
  21 #include <svl/poolitem.hxx>
  22 #include <tools/stream.hxx>
  23 #include <tools/solar.h>
  24 #include <osl/diagnose.h>
  25 #include <com/sun/star/uno/Any.hxx>
  26 #include <com/sun/star/uno/Sequence.hxx>
  27
  28
  29 SfxPoolItem* SfxLockBytesItem::CreateDefault() { return new SfxLockBytesItem; }
  30
  31
  32 SfxLockBytesItem::SfxLockBytesItem()
  33 {
  34 }
  35
  36
  37 SfxLockBytesItem::SfxLockBytesItem( sal_uInt16 nW, SvStream &rStream )
  38 :   SfxPoolItem( nW )
  39 {
  40     rStream.Seek( 0 );
  41     _xVal = new SvLockBytes( new SvMemoryStream(), true );
  42
  43     SvStream aLockBytesStream( _xVal.get() );
  44     rStream.ReadStream( aLockBytesStream );
  45 }
  46
  47
  48 SfxLockBytesItem::~SfxLockBytesItem()
  49 {
  50 }
  51
  52
  53 bool SfxLockBytesItem::operator==( const SfxPoolItem& rItem ) const
  54 {
  55     return static_cast<const SfxLockBytesItem&>(rItem)._xVal == _xVal;
  56 }
  57
  58
  59 SfxPoolItem* SfxLockBytesItem::Clone(SfxItemPool *) const
  60 {
  61     return new SfxLockBytesItem( *this );
  62 }
  63
  64
  65 #define MAX_BUF 32000
  66
  67 SfxPoolItem* SfxLockBytesItem::Create( SvStream &rStream, sal_uInt16 ) const
  68 {
  69     sal_uInt32 nSize = 0;
  70     sal_uLong nActRead = 0;
  71     sal_Char cTmpBuf[MAX_BUF];
  72     SvMemoryStream aNewStream;
  73     rStream.ReadUInt32( nSize );
  74
  75     do {
  76         sal_uLong nToRead;
  77         if( (nSize - nActRead) > MAX_BUF )
  78             nToRead = MAX_BUF;
  79         else
  80             nToRead = nSize - nActRead;
  81         nActRead += rStream.ReadBytes( cTmpBuf, nToRead );
  82         aNewStream.WriteBytes( cTmpBuf, nToRead );
  83     } while( nSize > nActRead );
  84
  85     return new SfxLockBytesItem( Which(), aNewStream );
  86 }
  87
  88
  89 SvStream& SfxLockBytesItem::Store(SvStream &rStream, sal_uInt16 ) const
  90 {
  91     SvStream aLockBytesStream( _xVal.get() );
  92     sal_uInt32 nSize = aLockBytesStream.Seek( STREAM_SEEK_TO_END );
  93     aLockBytesStream.Seek( 0 );
  94
  95     rStream.WriteUInt32( nSize );
  96     rStream.WriteStream( aLockBytesStream );
  97
  98     return rStream;
  99 }
 100
 101 // virtual
 102 bool SfxLockBytesItem::PutValue( const css::uno::Any& rVal, sal_uInt8 )
 103 {
 104     css::uno::Sequence< sal_Int8 > aSeq;
 105     if ( rVal >>= aSeq )
 106     {
 107         if ( aSeq.getLength() )
 108         {
 109             SvMemoryStream* pStream = new SvMemoryStream();
 110             pStream->WriteBytes( aSeq.getConstArray(), aSeq.getLength() );
 111             pStream->Seek(0);
 112
 113             _xVal = new SvLockBytes( pStream, true );
 114         }
 115         else
 116             _xVal = nullptr;
 117
 118         return true;
 119     }
 120
 121     OSL_FAIL( "SfxLockBytesItem::PutValue - Wrong type!" );
 122     return true;
 123 }
 124
 125 // virtual
 126 bool SfxLockBytesItem::QueryValue( css::uno::Any& rVal, sal_uInt8 ) const
 127 {
 128     if ( _xVal.is() )
 129     {
 130         sal_uInt32 nLen;
 131         SvLockBytesStat aStat;
 132
 133         if ( _xVal->Stat( &aStat, SVSTATFLAG_DEFAULT ) == ERRCODE_NONE )
 134             nLen = aStat.nSize;
 135         else
 136             return false;
 137
 138         std::size_t nRead = 0;
 139         css::uno::Sequence< sal_Int8 > aSeq( nLen );
 140
 141         _xVal->ReadAt( 0, aSeq.getArray(), nLen, &nRead );
 142         rVal <<= aSeq;
 143     }
 144     else
 145     {
 146         css::uno::Sequence< sal_Int8 > aSeq( 0 );
 147         rVal <<= aSeq;
 148     }
 149
 150     return true;
 151 }
 152
 153 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */