/* ====================================================================
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
Unless required by applicable law or agreed To in writing, software
distributed under the License is distributed on an "AS Is" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==================================================================== */
/* ================================================================
* About NPOI
* Author: Tony Qu
* Author's email: tonyqus (at) gmail.com
* Author's Blog: tonyqus.wordpress.com.cn (wp.tonyqus.cn)
* HomePage: http://www.codeplex.com/npoi
* Contributors:
*
* ==============================================================*/
namespace HH.WMS.Utils.NPOI.HPSF
{
using System;
using System.IO;
using System.Collections;
using HH.WMS.Utils.NPOI.HPSF.Wellknown;
///
/// Factory class To Create instances of {@link SummaryInformation},
/// {@link DocumentSummaryInformation} and {@link PropertySet}.
/// @author Rainer Klute
/// <klute@rainer-klute.de>
/// @since 2002-02-09
///
public class PropertySetFactory
{
///
/// Creates the most specific {@link PropertySet} from an {@link
/// InputStream}. This is preferrably a {@link
/// DocumentSummaryInformation} or a {@link SummaryInformation}. If
/// the specified {@link InputStream} does not contain a property
/// Set stream, an exception is thrown and the {@link InputStream}
/// is repositioned at its beginning.
///
/// Contains the property set stream's data.
/// The Created {@link PropertySet}.
public static PropertySet Create(Stream stream)
{
PropertySet ps = new PropertySet(stream);
try
{
if (ps.IsSummaryInformation)
return new SummaryInformation(ps);
else if (ps.IsDocumentSummaryInformation)
return new DocumentSummaryInformation(ps);
else
return ps;
}
catch (UnexpectedPropertySetTypeException)
{
/* This exception will never be throws because we alReady checked
* explicitly for this case above. */
throw;
}
}
///
/// Creates a new summary information
///
/// the new summary information.
public static SummaryInformation CreateSummaryInformation()
{
MutablePropertySet ps = new MutablePropertySet();
MutableSection s = (MutableSection)ps.FirstSection;
s.SetFormatID(SectionIDMap.SUMMARY_INFORMATION_ID);
try
{
return new SummaryInformation(ps);
}
catch (UnexpectedPropertySetTypeException ex)
{
/* This should never happen. */
throw new HPSFRuntimeException(ex);
}
}
///
/// Creates a new document summary information.
///
/// the new document summary information.
public static DocumentSummaryInformation CreateDocumentSummaryInformation()
{
MutablePropertySet ps = new MutablePropertySet();
MutableSection s = (MutableSection)ps.FirstSection;
s.SetFormatID(SectionIDMap.DOCUMENT_SUMMARY_INFORMATION_ID1);
try
{
return new DocumentSummaryInformation(ps);
}
catch (UnexpectedPropertySetTypeException ex)
{
/* This should never happen. */
throw new HPSFRuntimeException(ex);
}
}
}
}