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Diffstat (limited to 'oox/source/helper/zipstorage.cxx')
| -rw-r--r-- | oox/source/helper/zipstorage.cxx | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/oox/source/helper/zipstorage.cxx b/oox/source/helper/zipstorage.cxx new file mode 100644 index 000000000..987ab3b80 --- /dev/null +++ b/oox/source/helper/zipstorage.cxx @@ -0,0 +1,204 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#include <oox/helper/zipstorage.hxx> + +#include <com/sun/star/embed/ElementModes.hpp> +#include <com/sun/star/embed/XStorage.hpp> +#include <com/sun/star/embed/XTransactedObject.hpp> +#include <com/sun/star/io/XInputStream.hpp> +#include <com/sun/star/io/XOutputStream.hpp> +#include <com/sun/star/uno/XComponentContext.hpp> +#include <osl/diagnose.h> +#include <sal/log.hxx> +#include <tools/diagnose_ex.h> +#include <comphelper/storagehelper.hxx> + +namespace oox { + +using namespace ::com::sun::star::container; +using namespace ::com::sun::star::embed; +using namespace ::com::sun::star::io; +using namespace ::com::sun::star::lang; +using namespace ::com::sun::star::uno; + +ZipStorage::ZipStorage( const Reference< XComponentContext >& rxContext, const Reference< XInputStream >& rxInStream ) : + StorageBase( rxInStream, false ) +{ + OSL_ENSURE( rxContext.is(), "ZipStorage::ZipStorage - missing component context" ); + // create base storage object + if( !rxContext.is() ) + return; + + try + { + /* #i105325# ::comphelper::OStorageHelper::GetStorageFromInputStream() + cannot be used here as it will open a storage with format type + 'PackageFormat' that will not work with OOXML packages. + + #161971# The MS-document storages should always be opened in repair + mode to ignore the format errors and get so much info as possible. + I hate this solution, but it seems to be the only consistent way to + handle the MS documents. + + TODO: #i105410# switch to 'OFOPXMLFormat' and use its + implementation of relations handling. + */ + mxStorage = ::comphelper::OStorageHelper::GetStorageOfFormatFromInputStream( + ZIP_STORAGE_FORMAT_STRING, rxInStream, rxContext, false); + } + catch (Exception const&) + { + TOOLS_WARN_EXCEPTION("oox.storage", "ZipStorage::ZipStorage exception opening input storage"); + } +} + +ZipStorage::ZipStorage( const Reference< XComponentContext >& rxContext, const Reference< XStream >& rxStream ) : + StorageBase( rxStream, false ) +{ + OSL_ENSURE( rxContext.is(), "ZipStorage::ZipStorage - missing component context" ); + // create base storage object + if( rxContext.is() ) try + { + const sal_Int32 nOpenMode = ElementModes::READWRITE | ElementModes::TRUNCATE; + mxStorage = ::comphelper::OStorageHelper::GetStorageOfFormatFromStream( + OFOPXML_STORAGE_FORMAT_STRING, rxStream, nOpenMode, rxContext, true); + } + catch (Exception const&) + { + TOOLS_WARN_EXCEPTION("oox.storage", "ZipStorage::ZipStorage exception opening output storage"); + } +} + +ZipStorage::ZipStorage( const ZipStorage& rParentStorage, const Reference< XStorage >& rxStorage, const OUString& rElementName ) : + StorageBase( rParentStorage, rElementName, rParentStorage.isReadOnly() ), + mxStorage( rxStorage ) +{ + SAL_WARN_IF(!mxStorage.is(), "oox.storage", "ZipStorage::ZipStorage " + " - missing storage" ); +} + +ZipStorage::~ZipStorage() +{ +} + +bool ZipStorage::implIsStorage() const +{ + return mxStorage.is(); +} + +Reference< XStorage > ZipStorage::implGetXStorage() const +{ + return mxStorage; +} + +void ZipStorage::implGetElementNames( ::std::vector< OUString >& orElementNames ) const +{ + Sequence< OUString > aNames; + if( mxStorage.is() ) try + { + aNames = mxStorage->getElementNames(); + if( aNames.hasElements() ) + orElementNames.insert( orElementNames.end(), aNames.begin(), aNames.end() ); + } + catch (Exception const&) + { + TOOLS_INFO_EXCEPTION("oox.storage", "getElementNames"); + } +} + +StorageRef ZipStorage::implOpenSubStorage( const OUString& rElementName, bool bCreateMissing ) +{ + Reference< XStorage > xSubXStorage; + bool bMissing = false; + if( mxStorage.is() ) try + { + // XStorage::isStorageElement may throw various exceptions... + if( mxStorage->isStorageElement( rElementName ) ) + xSubXStorage = mxStorage->openStorageElement( + rElementName, css::embed::ElementModes::READ ); + } + catch( NoSuchElementException& ) + { + bMissing = true; + } + catch (Exception const&) + { + TOOLS_INFO_EXCEPTION("oox.storage", "openStorageElement"); + } + + if( bMissing && bCreateMissing ) try + { + xSubXStorage = mxStorage->openStorageElement( + rElementName, css::embed::ElementModes::READWRITE ); + } + catch (Exception const&) + { + TOOLS_INFO_EXCEPTION("oox.storage", "openStorageElement"); + } + + StorageRef xSubStorage; + if( xSubXStorage.is() ) + xSubStorage.reset( new ZipStorage( *this, xSubXStorage, rElementName ) ); + return xSubStorage; +} + +Reference< XInputStream > ZipStorage::implOpenInputStream( const OUString& rElementName ) +{ + Reference< XInputStream > xInStream; + if( mxStorage.is() ) try + { + xInStream.set( mxStorage->openStreamElement( rElementName, css::embed::ElementModes::READ ), UNO_QUERY ); + } + catch (Exception const&) + { + TOOLS_INFO_EXCEPTION("oox.storage", "openStreamElement"); + } + return xInStream; +} + +Reference< XOutputStream > ZipStorage::implOpenOutputStream( const OUString& rElementName ) +{ + Reference< XOutputStream > xOutStream; + if( mxStorage.is() ) try + { + xOutStream.set( mxStorage->openStreamElement( rElementName, css::embed::ElementModes::READWRITE ), UNO_QUERY ); + } + catch (Exception const&) + { + TOOLS_INFO_EXCEPTION("oox.storage", "openStreamElement"); + } + return xOutStream; +} + +void ZipStorage::implCommit() const +{ + try + { + Reference< XTransactedObject >( mxStorage, UNO_QUERY_THROW )->commit(); + } + catch (Exception const&) + { + TOOLS_WARN_EXCEPTION("oox.storage", "commit"); + } +} + +} // namespace oox + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |