/// <summary>
/// Move iterator to the next part that has an associated filter and (re)initialize the
/// relevant filter.
/// </summary>
/// <remarks>
/// This function results in _progress and _currentFilter being updated.
/// </remarks>
private void MoveToNextFilter()
{
// Reset _isInternalFilter.
_isInternalFilter = false;
switch (_progress)
{
case Progress.FilteringNotStarted:
#region Progress.FilteringNotStarted
// Filtering not started yet. Start with core properties filter.
IndexingFilterMarshaler corePropertiesFilterMarshaler
= new IndexingFilterMarshaler(
new CorePropertiesFilter(_package.PackageProperties));
// Avoid exception on end of chunks from part filter.
corePropertiesFilterMarshaler.ThrowOnEndOfChunks = false;
_currentFilter = corePropertiesFilterMarshaler;
_currentFilter.Init(_grfFlags, _cAttributes, _aAttributes);
_isInternalFilter = true;
// Update progress to indicate filtering core properties.
_progress = Progress.FilteringCoreProperties;
break;
#endregion Progress.FilteringNotStarted
case Progress.FilteringCoreProperties:
#region Progress.FilteringCoreProperties
// Core properties were being filtered. Next move to content filtering.
#endregion Progress.FilteringCoreProperties
case Progress.FilteringContent:
#region Progress.FilteringContent
//
// Content being filtered. Move to next content part filter if it exists.
// Update progress to indicate filtering content if there is a next content
// filter, else to indicate filtering is completed.
//
if (_currentStream != null)
{
// Close the stream for the previous PackagePart.
_currentStream.Close();
_currentStream = null;
}
for (_currentFilter = null; _partIterator.MoveNext(); _currentFilter = null)
{
PackagePart currentPart = (PackagePart)_partIterator.Current;
ContentType contentType = currentPart.ValidatedContentType;
// Find the filter's CLSID based on the MIME content type.
string filterClsid = GetFilterClsid(contentType, currentPart.Uri);
if (filterClsid != null)
{
_currentFilter = GetFilterFromClsid(new Guid(filterClsid));
if (_currentFilter != null)
{
_currentStream = currentPart.GetStream();
ManagedIStream stream = new ManagedIStream(_currentStream);
try
{
IPersistStreamWithArrays filterLoader = (IPersistStreamWithArrays)_currentFilter;
filterLoader.Load(stream);
_currentFilter.Init(_grfFlags, _cAttributes, _aAttributes);
// Filter found and properly initialized. Search is over.
break;
}
catch (InvalidCastException)
{
// If a filter does not implement IPersistStream, then, by design, it should
// be ignored.
}
catch (COMException)
{
// Any initialization bug giving rise to an exception in the initialization
// code should be ignored, since this will be due to faulty external code.
}
catch (IOException)
{
// Initialization problem can be reported as IOException. See preceding comment.
}
}
}
//
// No valid externally registered filters found for this content part.
// If this is xaml part, use the internal XamlFilter.
//
if (BindUriHelper.IsXamlMimeType(contentType))
{
if (_currentStream == null)
{
_currentStream = currentPart.GetStream();
}
IndexingFilterMarshaler xamlFilterMarshaler
= new IndexingFilterMarshaler(new XamlFilter(_currentStream));
// Avoid exception on end of chunks from part filter.
xamlFilterMarshaler.ThrowOnEndOfChunks = false;
_currentFilter = xamlFilterMarshaler;
_currentFilter.Init(_grfFlags, _cAttributes, _aAttributes);
_isInternalFilter = true;
// Filter found and properly initialized. Search is over.
break;
}
if (_currentStream != null)
{
_currentStream.Close();
_currentStream = null;
}
}
if (_currentFilter == null)
{
// Update progress to indicate filtering is completed.
_progress = Progress.FilteringCompleted;
}
else
{
// Tell GetChunk that we are getting input from a new filter.
_firstChunkFromFilter = true;
// Update progress to indicate content being filtered.
_progress = Progress.FilteringContent;
}
break;
#endregion Progress.FilteringContent
case Progress.FilteringCompleted:
#region Progress.FilteringCompleted
Debug.Assert(false);
break;
#endregion Progress.FilteringCompleted
default:
#region Default
Debug.Assert(false);
break;
#endregion Default
}
}
/// <summary>
/// Move iterator to the next part that has an associated filter and (re)initialize the
/// relevant filter.
/// </summary>
/// <remarks>
/// This function results in _progress and _currentFilter being updated.
/// </remarks>
private void MoveToNextFilter()
{
// Reset _isInternalFilter.
_isInternalFilter = false;
switch (_progress)
{
case Progress.FilteringNotStarted:
#region Progress.FilteringNotStarted
// Filtering not started yet. Start with core properties filter.
IndexingFilterMarshaler corePropertiesFilterMarshaler
= new IndexingFilterMarshaler(
new CorePropertiesFilter(_package.PackageProperties));
// Avoid exception on end of chunks from part filter.
corePropertiesFilterMarshaler.ThrowOnEndOfChunks = false;
_currentFilter = corePropertiesFilterMarshaler;
_currentFilter.Init(_grfFlags, _cAttributes, _aAttributes);
_isInternalFilter = true;
// Update progress to indicate filtering core properties.
_progress = Progress.FilteringCoreProperties;
break;
#endregion Progress.FilteringNotStarted
case Progress.FilteringCoreProperties:
#region Progress.FilteringCoreProperties
// Core properties were being filtered. Next move to content filtering.
#endregion Progress.FilteringCoreProperties
case Progress.FilteringContent:
#region Progress.FilteringContent
//
// Content being filtered. Move to next content part filter if it exists.
// Update progress to indicate filtering content if there is a next content
// filter, else to indicate filtering is completed.
//
if (_currentStream != null)
{
// Close the stream for the previous PackagePart.
_currentStream.Close();
_currentStream = null;
}
for (_currentFilter = null; _partIterator.MoveNext(); _currentFilter = null)
{
PackagePart currentPart = (PackagePart)_partIterator.Current;
ContentType contentType = currentPart.ValidatedContentType();
// Find the filter's CLSID based on the MIME content type.
string filterClsid = GetFilterClsid(contentType, currentPart.Uri);
if (filterClsid != null)
{
_currentFilter = GetFilterFromClsid(new Guid(filterClsid));
if (_currentFilter != null)
{
_currentStream = currentPart.GetSeekableStream();
ManagedIStream stream = new ManagedIStream(_currentStream);
try
{
IPersistStreamWithArrays filterLoader = (IPersistStreamWithArrays)_currentFilter;
filterLoader.Load(stream);
_currentFilter.Init(_grfFlags, _cAttributes, _aAttributes);
// Filter found and properly initialized. Search is over.
break;
}
catch (InvalidCastException)
{
// If a filter does not implement IPersistStream, then, by design, it should
// be ignored.
}
catch (COMException)
{
// Any initialization bug giving rise to an exception in the initialization
// code should be ignored, since this will be due to faulty external code.
}
catch (IOException)
{
// Initialization problem can be reported as IOException. See preceding comment.
}
}
}
//
// No valid externally registered filters found for this content part.
// If this is xaml part, use the internal XamlFilter.
//
if (BindUriHelper.IsXamlMimeType(contentType))
{
if (_currentStream == null)
{
_currentStream = currentPart.GetSeekableStream();
}
IndexingFilterMarshaler xamlFilterMarshaler
= new IndexingFilterMarshaler(new XamlFilter(_currentStream));
// Avoid exception on end of chunks from part filter.
xamlFilterMarshaler.ThrowOnEndOfChunks = false;
_currentFilter = xamlFilterMarshaler;
_currentFilter.Init(_grfFlags, _cAttributes, _aAttributes);
_isInternalFilter = true;
// Filter found and properly initialized. Search is over.
break;
}
if (_currentStream != null)
{
_currentStream.Close();
_currentStream = null;
}
}
if (_currentFilter == null)
{
// Update progress to indicate filtering is completed.
_progress = Progress.FilteringCompleted;
}
else
{
// Tell GetChunk that we are getting input from a new filter.
_firstChunkFromFilter = true;
// Update progress to indicate content being filtered.
_progress = Progress.FilteringContent;
}
break;
#endregion Progress.FilteringContent
case Progress.FilteringCompleted:
#region Progress.FilteringCompleted
Debug.Assert(false);
break;
#endregion Progress.FilteringCompleted
default:
#region Default
Debug.Assert(false);
break;
#endregion Default
}
}
// Token: 0x06006CBB RID: 27835 RVA: 0x001F47E0 File Offset: 0x001F29E0
private void MoveToNextFilter()
{
this._isInternalFilter = false;
switch (this._progress)
{
case PackageFilter.Progress.FilteringNotStarted:
this._currentFilter = new IndexingFilterMarshaler(new CorePropertiesFilter(this._package.PackageProperties))
{
ThrowOnEndOfChunks = false
};
this._currentFilter.Init(this._grfFlags, this._cAttributes, this._aAttributes);
this._isInternalFilter = true;
this._progress = PackageFilter.Progress.FilteringCoreProperties;
return;
case PackageFilter.Progress.FilteringCoreProperties:
case PackageFilter.Progress.FilteringContent:
if (this._currentStream != null)
{
this._currentStream.Close();
this._currentStream = null;
}
this._currentFilter = null;
while (this._partIterator.MoveNext())
{
PackagePart packagePart = (PackagePart)this._partIterator.Current;
ContentType validatedContentType = packagePart.ValidatedContentType;
string filterClsid = this.GetFilterClsid(validatedContentType, packagePart.Uri);
if (filterClsid != null)
{
this._currentFilter = this.GetFilterFromClsid(new Guid(filterClsid));
if (this._currentFilter != null)
{
this._currentStream = packagePart.GetStream();
ManagedIStream pstm = new ManagedIStream(this._currentStream);
try
{
IPersistStreamWithArrays persistStreamWithArrays = (IPersistStreamWithArrays)this._currentFilter;
persistStreamWithArrays.Load(pstm);
this._currentFilter.Init(this._grfFlags, this._cAttributes, this._aAttributes);
break;
}
catch (InvalidCastException)
{
}
catch (COMException)
{
}
catch (IOException)
{
}
}
}
if (BindUriHelper.IsXamlMimeType(validatedContentType))
{
if (this._currentStream == null)
{
this._currentStream = packagePart.GetStream();
}
this._currentFilter = new IndexingFilterMarshaler(new XamlFilter(this._currentStream))
{
ThrowOnEndOfChunks = false
};
this._currentFilter.Init(this._grfFlags, this._cAttributes, this._aAttributes);
this._isInternalFilter = true;
break;
}
if (this._currentStream != null)
{
this._currentStream.Close();
this._currentStream = null;
}
this._currentFilter = null;
}
if (this._currentFilter == null)
{
this._progress = PackageFilter.Progress.FilteringCompleted;
return;
}
this._firstChunkFromFilter = true;
this._progress = PackageFilter.Progress.FilteringContent;
break;
case PackageFilter.Progress.FilteringCompleted:
break;
default:
return;
}
}
