/* ====================================================================
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Licensed To the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for Additional information regarding copyright ownership.
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The ASF licenses this file To You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed To in writing, software
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distributed under the License is distributed on an "AS Is" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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/* ================================================================
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* About NPOI
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* Author: Tony Qu
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* Author's email: tonyqus (at) gmail.com
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* Author's Blog: tonyqus.wordpress.com.cn (wp.tonyqus.cn)
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* HomePage: http://www.codeplex.com/npoi
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* Contributors:
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*
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* ==============================================================*/
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namespace HH.WMS.Utils.NPOI.HPSF
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{
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using System;
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using System.IO;
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using System.Collections;
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using HH.WMS.Utils.NPOI.HPSF.Wellknown;
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/// <summary>
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/// Factory class To Create instances of {@link SummaryInformation},
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/// {@link DocumentSummaryInformation} and {@link PropertySet}.
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/// @author Rainer Klute
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/// <a href="mailto:klute@rainer-klute.de"><klute@rainer-klute.de></a>
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/// @since 2002-02-09
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/// </summary>
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public class PropertySetFactory
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{
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/// <summary>
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/// Creates the most specific {@link PropertySet} from an {@link
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/// InputStream}. This is preferrably a {@link
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/// DocumentSummaryInformation} or a {@link SummaryInformation}. If
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/// the specified {@link InputStream} does not contain a property
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/// Set stream, an exception is thrown and the {@link InputStream}
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/// is repositioned at its beginning.
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/// </summary>
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/// <param name="stream">Contains the property set stream's data.</param>
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/// <returns>The Created {@link PropertySet}.</returns>
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public static PropertySet Create(Stream stream)
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{
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PropertySet ps = new PropertySet(stream);
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try
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{
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if (ps.IsSummaryInformation)
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return new SummaryInformation(ps);
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else if (ps.IsDocumentSummaryInformation)
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return new DocumentSummaryInformation(ps);
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else
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return ps;
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}
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catch (UnexpectedPropertySetTypeException)
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{
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/* This exception will never be throws because we alReady checked
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* explicitly for this case above. */
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throw;
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}
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}
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/// <summary>
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/// Creates a new summary information
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/// </summary>
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/// <returns>the new summary information.</returns>
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public static SummaryInformation CreateSummaryInformation()
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{
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MutablePropertySet ps = new MutablePropertySet();
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MutableSection s = (MutableSection)ps.FirstSection;
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s.SetFormatID(SectionIDMap.SUMMARY_INFORMATION_ID);
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try
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{
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return new SummaryInformation(ps);
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}
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catch (UnexpectedPropertySetTypeException ex)
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{
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/* This should never happen. */
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throw new HPSFRuntimeException(ex);
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}
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}
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/// <summary>
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/// Creates a new document summary information.
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/// </summary>
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/// <returns>the new document summary information.</returns>
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public static DocumentSummaryInformation CreateDocumentSummaryInformation()
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{
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MutablePropertySet ps = new MutablePropertySet();
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MutableSection s = (MutableSection)ps.FirstSection;
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s.SetFormatID(SectionIDMap.DOCUMENT_SUMMARY_INFORMATION_ID1);
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try
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{
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return new DocumentSummaryInformation(ps);
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}
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catch (UnexpectedPropertySetTypeException ex)
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{
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/* This should never happen. */
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throw new HPSFRuntimeException(ex);
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}
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}
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}
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}
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