/// <summary>
/// Init
/// </summary>
/// <param name="cAttributes">length of aAttributes</param>
/// <param name="aAttributes">array of FULLPROPSPEC structs</param>
/// <returns>managed array</returns>
internal static ManagedFullPropSpec[] MarshalFullPropSpecArray(
uint cAttributes, // length of aAttributes
FULLPROPSPEC[] aAttributes)
{
// If there are attributes, these override the flags
if (cAttributes > 0)
{
// Attributes count and array should match.
// This has already been checked for by XpsFilter.
Invariant.Assert(aAttributes != null);
ManagedFullPropSpec[] initAttributes = new ManagedFullPropSpec[checked((int)cAttributes)];
// convert to managed equivalents to isolate the marshaling effort
for (int i = 0; i < cAttributes; i++)
{
// convert and add to local list
initAttributes[i] = new ManagedFullPropSpec(aAttributes[i]);
}
return initAttributes;
}
else
return null;
}
/// <summary>
/// Init
/// </summary>
/// <param name="cAttributes">length of aAttributes</param>
/// <param name="aAttributes">array of FULLPROPSPEC structs</param>
/// <returns>managed array</returns>
internal static ManagedFullPropSpec[] MarshalFullPropSpecArray(
uint cAttributes, // length of aAttributes
FULLPROPSPEC[] aAttributes)
{
// If there are attributes, these override the flags
if (cAttributes > 0)
{
// Attributes count and array should match.
// This has already been checked for by XpsFilter.
Invariant.Assert(aAttributes != null);
ManagedFullPropSpec[] initAttributes = new ManagedFullPropSpec[checked ((int)cAttributes)];
// convert to managed equivalents to isolate the marshaling effort
for (int i = 0; i < cAttributes; i++)
{
// convert and add to local list
initAttributes[i] = new ManagedFullPropSpec(aAttributes[i]);
}
return(initAttributes);
}
else
{
return(null);
}
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="coreProperties">CoreProperties to enumerate</param>
/// <param name="grfFlags">
/// if IFILTER_INIT_APPLY_INDEX_ATTRIBUTES is specified,
/// this indicates all core properties to be returned unless
/// the parameter aAttributes is non-empty.
/// </param>
/// <param name="attributes">
/// attributes specified corresponding to the properties to filter.
/// </param>
internal CorePropertyEnumerator(PackageProperties coreProperties,
IFILTER_INIT grfFlags,
ManagedFullPropSpec[] attributes)
{
if (attributes != null && attributes.Length > 0)
{
//
// If attruibutes list specified,
// return core properties for only those attributes.
//
_attributes = attributes;
}
else if ((grfFlags & IFILTER_INIT.IFILTER_INIT_APPLY_INDEX_ATTRIBUTES)
== IFILTER_INIT.IFILTER_INIT_APPLY_INDEX_ATTRIBUTES)
{
//
// If no attributes list specified,
// but IFILTER_INIT_APPLY_INDEX_ATTRIBUTES is present in grfFlags,
// return all core properties.
//
_attributes = new ManagedFullPropSpec[]
{
//
// SummaryInformation
//
new ManagedFullPropSpec(FormatId.SummaryInformation, PropertyId.Title),
new ManagedFullPropSpec(FormatId.SummaryInformation, PropertyId.Subject),
new ManagedFullPropSpec(FormatId.SummaryInformation, PropertyId.Creator),
new ManagedFullPropSpec(FormatId.SummaryInformation, PropertyId.Keywords),
new ManagedFullPropSpec(FormatId.SummaryInformation, PropertyId.Description),
new ManagedFullPropSpec(FormatId.SummaryInformation, PropertyId.LastModifiedBy),
new ManagedFullPropSpec(FormatId.SummaryInformation, PropertyId.Revision),
new ManagedFullPropSpec(FormatId.SummaryInformation, PropertyId.LastPrinted),
new ManagedFullPropSpec(FormatId.SummaryInformation, PropertyId.DateCreated),
new ManagedFullPropSpec(FormatId.SummaryInformation, PropertyId.DateModified),
//
// DocumentSummaryInformation
//
new ManagedFullPropSpec(FormatId.DocumentSummaryInformation, PropertyId.Category),
new ManagedFullPropSpec(FormatId.DocumentSummaryInformation, PropertyId.Identifier),
new ManagedFullPropSpec(FormatId.DocumentSummaryInformation, PropertyId.ContentType),
new ManagedFullPropSpec(FormatId.DocumentSummaryInformation, PropertyId.Language),
new ManagedFullPropSpec(FormatId.DocumentSummaryInformation, PropertyId.Version),
new ManagedFullPropSpec(FormatId.DocumentSummaryInformation, PropertyId.ContentStatus)
};
}
else
{
// No core properties to be returned.
}
_coreProperties = coreProperties;
_currentIndex = -1;
}
///<summary>Build a contents chunk, passing the contents string and specifying whether it comes from a Glyphs element.</summary>
///<param name="contents">The value of the chunk's contents property.</param>
///<param name="chunkID">An arbitrary Uint32 to identify each chunk returned by IFilter.GetChunk.</param>
///<param name="breakType">The opening break for the chunk.</param>
///<param name="attribute">A description of the property represented by the chunk.</param>
///<param name="lcid">The locale ID for the chunk.</param>
internal IndexingContentUnit(
string contents,
uint chunkID,
CHUNK_BREAKTYPE breakType,
ManagedFullPropSpec attribute,
uint lcid)
: base(chunkID, breakType, attribute, lcid, CHUNKSTATE.CHUNK_TEXT)
{
_contents = contents;
}
///<summary>Build a contents chunk, passing the contents string and specifying whether it comes from a Glyphs element.</summary>
///<param name="contents">The value of the chunk's contents property.</param>
///<param name="chunkID">An arbitrary Uint32 to identify each chunk returned by IFilter.GetChunk.</param>
///<param name="breakType">The opening break for the chunk.</param>
///<param name="attribute">A description of the property represented by the chunk.</param>
///<param name="lcid">The locale ID for the chunk.</param>
internal IndexingContentUnit(
string contents,
uint chunkID,
CHUNK_BREAKTYPE breakType,
ManagedFullPropSpec attribute,
uint lcid)
: base(chunkID, breakType, attribute, lcid, CHUNKSTATE.CHUNK_TEXT)
{
_contents = contents;
}
// Token: 0x06006C67 RID: 27751 RVA: 0x001F38FC File Offset: 0x001F1AFC
internal ManagedChunk(uint index, CHUNK_BREAKTYPE breakType, ManagedFullPropSpec attribute, uint lcid, CHUNKSTATE flags)
{
Invariant.Assert(breakType >= CHUNK_BREAKTYPE.CHUNK_NO_BREAK && breakType <= CHUNK_BREAKTYPE.CHUNK_EOC);
Invariant.Assert(attribute != null);
this._index = index;
this._breakType = breakType;
this._lcid = lcid;
this._attribute = attribute;
this._flags = flags;
this._idChunkSource = this._index;
}
/// <summary>
/// A utility to be used when one wants to reuse
/// one object to hold different values in succession.
/// </summary>
internal void InitIndexingContentUnit(
string contents,
uint chunkID,
CHUNK_BREAKTYPE breakType,
ManagedFullPropSpec attribute,
uint lcid)
{
_contents = contents;
ID = chunkID;
BreakType = breakType;
Attribute = attribute;
Locale = lcid;
}
/// <summary>
/// A utility to be used when one wants to reuse
/// one object to hold different values in succession.
/// </summary>
internal void InitIndexingContentUnit(
string contents,
uint chunkID,
CHUNK_BREAKTYPE breakType,
ManagedFullPropSpec attribute,
uint lcid)
{
_contents = contents;
ID = chunkID;
BreakType = breakType;
Attribute = attribute;
Locale = lcid;
}
/// <summary>
/// Initialzes the session for this filter.
/// </summary>
/// <param name="grfFlags">usage flags</param>
/// <param name="aAttributes">array of Managed FULLPROPSPEC structs to restrict responses</param>
/// <returns>IFILTER_FLAGS_NONE. Return value is effectively ignored by the caller.</returns>
public IFILTER_FLAGS Init(IFILTER_INIT grfFlags, ManagedFullPropSpec[] aAttributes)
{
// NOTE: Methods parameters have already been validated by XpsFilter.
_grfFlags = grfFlags;
_aAttributes = aAttributes;
// Each call to Init() creates a new enumerator
// with parameters corresponding to current Init() call.
_corePropertyEnumerator = new CorePropertyEnumerator(
_coreProperties, _grfFlags, _aAttributes);
return IFILTER_FLAGS.IFILTER_FLAGS_NONE;
}
// Token: 0x06006C2E RID: 27694 RVA: 0x001F1CEC File Offset: 0x001EFEEC
internal static ManagedFullPropSpec[] MarshalFullPropSpecArray(uint cAttributes, FULLPROPSPEC[] aAttributes)
{
if (cAttributes > 0U)
{
Invariant.Assert(aAttributes != null);
ManagedFullPropSpec[] array = new ManagedFullPropSpec[checked ((int)cAttributes)];
int num = 0;
while ((long)num < (long)((ulong)cAttributes))
{
array[num] = new ManagedFullPropSpec(aAttributes[num]);
num++;
}
return(array);
}
return(null);
}
///<summary>Build a contents chunk, passing the contents string.</summary>
/// <param name="index">id</param>
/// <param name="breakType">The opening break for the chunk.</param>
/// <param name="attribute">attribute</param>
/// <param name="lcid">The locale ID for the chunk.</param>
/// <param name="flags">Indicates if it is text or value chunk.</param>
/// <remarks>
/// All the chunks returned by the XAML filter and the container filter are text chunks.
/// Should a future filter implementation be capable of returning value chunks, a new constructor
/// and a Flags property will have to be defined.
/// </remarks>
internal ManagedChunk(uint index, CHUNK_BREAKTYPE breakType, ManagedFullPropSpec attribute, uint lcid, CHUNKSTATE flags)
{
// Argument errors can only be due to internal inconsistencies, since no input data makes its way here.
Invariant.Assert(breakType >= CHUNK_BREAKTYPE.CHUNK_NO_BREAK && breakType <= CHUNK_BREAKTYPE.CHUNK_EOC);
Invariant.Assert(attribute != null);
// Note that lcid values potentially cover the full range of uint values
// (see http://msdn.microsoft.com/library/default.asp?url=/library/en-us/intl/nls_8sj7.asp)
// and so no useful validation can be made for lcid.
_index = index;
_breakType = breakType;
_lcid = lcid;
_attribute = attribute;
_flags = flags;
// Since pseudo-properties (a.k.a. internal values) are not supported by the XPS filters,
// all chunks we return are expected to have idChunkSource equal to idChunk.
// (See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/indexsrv/html/ixufilt_8ib8.asp)
_idChunkSource = _index;
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="coreProperties">CoreProperties to enumerate</param>
/// <param name="grfFlags">
/// if IFILTER_INIT_APPLY_INDEX_ATTRIBUTES is specified,
/// this indicates all core properties to be returned unless
/// the parameter aAttributes is non-empty.
/// </param>
/// <param name="attributes">
/// attributes specified corresponding to the properties to filter.
/// </param>
internal CorePropertyEnumerator(PackageProperties coreProperties,
IFILTER_INIT grfFlags,
ManagedFullPropSpec[] attributes)
{
if (attributes != null && attributes.Length > 0)
{
//
// If attruibutes list specified,
// return core properties for only those attributes.
//
_attributes = attributes;
}
else if ((grfFlags & IFILTER_INIT.IFILTER_INIT_APPLY_INDEX_ATTRIBUTES)
== IFILTER_INIT.IFILTER_INIT_APPLY_INDEX_ATTRIBUTES)
{
//
// If no attributes list specified,
// but IFILTER_INIT_APPLY_INDEX_ATTRIBUTES is present in grfFlags,
// return all core properties.
//
_attributes = new ManagedFullPropSpec[]
{
//
// SummaryInformation
//
new ManagedFullPropSpec(FormatId.SummaryInformation, PropertyId.Title),
new ManagedFullPropSpec(FormatId.SummaryInformation, PropertyId.Subject),
new ManagedFullPropSpec(FormatId.SummaryInformation, PropertyId.Creator),
new ManagedFullPropSpec(FormatId.SummaryInformation, PropertyId.Keywords),
new ManagedFullPropSpec(FormatId.SummaryInformation, PropertyId.Description),
new ManagedFullPropSpec(FormatId.SummaryInformation, PropertyId.LastModifiedBy),
new ManagedFullPropSpec(FormatId.SummaryInformation, PropertyId.Revision),
new ManagedFullPropSpec(FormatId.SummaryInformation, PropertyId.LastPrinted),
new ManagedFullPropSpec(FormatId.SummaryInformation, PropertyId.DateCreated),
new ManagedFullPropSpec(FormatId.SummaryInformation, PropertyId.DateModified),
//
// DocumentSummaryInformation
//
new ManagedFullPropSpec(FormatId.DocumentSummaryInformation, PropertyId.Category),
new ManagedFullPropSpec(FormatId.DocumentSummaryInformation, PropertyId.Identifier),
new ManagedFullPropSpec(FormatId.DocumentSummaryInformation, PropertyId.ContentType),
new ManagedFullPropSpec(FormatId.DocumentSummaryInformation, PropertyId.Language),
new ManagedFullPropSpec(FormatId.DocumentSummaryInformation, PropertyId.Version),
new ManagedFullPropSpec(FormatId.DocumentSummaryInformation, PropertyId.ContentStatus)
};
}
else
{
// No core properties to be returned.
}
_coreProperties = coreProperties;
_currentIndex = -1;
}
internal static void MarshalFullPropSpec(ManagedFullPropSpec fullPropSpec, ref FULLPROPSPEC native)
{
native.guid = fullPropSpec.Guid;
MarshalPropSpec(fullPropSpec.Property, ref native.property);
}
/// <summary>
/// Marshal Managed to Native FULLPROPSPEC
/// </summary>
/// <param name="fullPropSpec"></param>
/// <param name="native"></param>
internal static void MarshalFullPropSpec(ManagedFullPropSpec fullPropSpec, ref FULLPROPSPEC native)
{
native.guid = fullPropSpec.Guid;
MarshalPropSpec(fullPropSpec.Property, ref native.property);
}
///<summary>Build a contents chunk, passing the contents string.</summary>
/// <param name="index">id</param>
/// <param name="breakType">The opening break for the chunk.</param>
/// <param name="attribute">attribute</param>
/// <param name="lcid">The locale ID for the chunk.</param>
/// <param name="flags">Indicates if it is text or value chunk.</param>
/// <remarks>
/// All the chunks returned by the XAML filter and the container filter are text chunks.
/// Should a future filter implementation be capable of returning value chunks, a new constructor
/// and a Flags property will have to be defined.
/// </remarks>
internal ManagedChunk(uint index, CHUNK_BREAKTYPE breakType, ManagedFullPropSpec attribute, uint lcid, CHUNKSTATE flags)
{
// Argument errors can only be due to internal inconsistencies, since no input data makes its way here.
Invariant.Assert(breakType >= CHUNK_BREAKTYPE.CHUNK_NO_BREAK && breakType <= CHUNK_BREAKTYPE.CHUNK_EOC);
Invariant.Assert(attribute != null);
// Note that lcid values potentially cover the full range of uint values
// (see http://msdn.microsoft.com/library/default.asp?url=/library/en-us/intl/nls_8sj7.asp)
// and so no useful validation can be made for lcid.
_index = index;
_breakType = breakType;
_lcid = lcid;
_attribute = attribute;
_flags = flags;
// Since pseudo-properties (a.k.a. internal values) are not supported by the XPS filters,
// all chunks we return are expected to have idChunkSource equal to idChunk.
// (See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/indexsrv/html/ixufilt_8ib8.asp)
_idChunkSource = _index;
}
/// <summary>
/// Managed counterpart of IFilter.Init.
/// </summary>
/// <param name="grfFlags">Usage flags. Only IFILTER_INIT_CANON_PARAGRAPHS can be meaningfully
/// honored by the XAML filter.</param>
/// <param name="aAttributes">array of Managed FULLPROPSPEC structs to restrict responses</param>
/// <returns>IFILTER_FLAGS_NONE, meaning the caller should not try to retrieve OLE property using
/// IPropertyStorage on the Xaml part.</returns>
/// <remarks>Input parameters are ignored because this filter never returns any property value.</remarks>
public IFILTER_FLAGS Init(
IFILTER_INIT grfFlags, // IFILTER_INIT value
ManagedFullPropSpec[] aAttributes) // restrict responses to the specified attributes
{
//
// Content is filtered either if no attributes are specified,
// or if there are attributes specified, the attribute with PSGUID_STORAGE
// property set and PID_STG_CONTENTS property id is present.
//
_filterContents = true;
if (aAttributes != null && aAttributes.Length > 0)
{
_filterContents = false;
for (int i = 0; i < aAttributes.Length; i++)
{
if (aAttributes[i].Guid == IndexingFilterMarshaler.PSGUID_STORAGE
&& aAttributes[i].Property.PropType == PropSpecType.Id
&& aAttributes[i].Property.PropId == (uint)MS.Internal.Interop.PID_STG.CONTENTS)
{
_filterContents = true;
break;
}
}
}
// The only flag in grfFlags that makes sense to honor is IFILTER_INIT_CANON_PARAGRAPHS
_returnCanonicalParagraphBreaks =
((grfFlags & IFILTER_INIT.IFILTER_INIT_CANON_PARAGRAPHS) != 0);
// Return zero value to indicate that the client code should not take any special steps
// to retrieve OLE properties. This might have to change if filtering loose Xaml is supported.
return IFILTER_FLAGS.IFILTER_FLAGS_NONE;
}
