// Write the property elements and clear _dirty.
private void SerializeDirtyProperties()
{
// In streaming mode, nullify dictionary values.
// As no property can be set to null through the API, this makes it possible to keep
// track of all properties that have been set since the CoreProperties object was created.
KeyValuePair <PackageXmlEnum, Object>[] entriesToNullify = null;
int numEntriesToNullify = 0;
if (_package.InStreamingCreation)
{
entriesToNullify = new KeyValuePair <PackageXmlEnum, Object> [_propertyDictionary.Count];
}
// Create a property element for each non-null entry.
foreach (KeyValuePair <PackageXmlEnum, Object> entry in _propertyDictionary)
{
// If we are NOT in streaming mode, the property value should NOT be null
Debug.Assert(entry.Value != null || _package.InStreamingCreation);
if (_package.InStreamingCreation &&
entry.Value == null) // already saved
{
continue;
}
PackageXmlEnum propertyNamespace = PackageXmlStringTable.GetXmlNamespace(entry.Key);
_xmlWriter.WriteStartElement(PackageXmlStringTable.GetXmlString(entry.Key),
PackageXmlStringTable.GetXmlString(propertyNamespace));
if (entry.Value is Nullable <DateTime> )
{
if (propertyNamespace == PackageXmlEnum.DublinCoreTermsNamespace)
{
// xsi:type=
_xmlWriter.WriteStartAttribute(PackageXmlStringTable.GetXmlString(PackageXmlEnum.Type),
PackageXmlStringTable.GetXmlString(PackageXmlEnum.XmlSchemaInstanceNamespace));
// "dcterms:W3CDTF"
_xmlWriter.WriteQualifiedName(_w3cdtf,
PackageXmlStringTable.GetXmlString(PackageXmlEnum.DublinCoreTermsNamespace));
_xmlWriter.WriteEndAttribute();
}
// Use sortable ISO 8601 date/time pattern. Include second fractions down to the 100-nanosecond interval,
// which is the definition of a "tick" for the DateTime type.
_xmlWriter.WriteString(XmlConvert.ToString(((Nullable <DateTime>)entry.Value).Value.ToUniversalTime(), "yyyy-MM-ddTHH:mm:ss.fffffffZ"));
}
else
{
// The following uses the fact that ToString is virtual.
_xmlWriter.WriteString(entry.Value.ToString());
}
_xmlWriter.WriteEndElement();
if (_package.InStreamingCreation)
{
entriesToNullify[numEntriesToNullify++] = entry;
}
}
// Mark properties as saved.
_dirty = false;
// Detailed marking of saved properties for the streaming mode.
if (_package.InStreamingCreation)
{
for (int i = 0; i < numEntriesToNullify; ++i)
{
_propertyDictionary[entriesToNullify[i].Key] = null;
}
}
}
// Deserialize properties part.
private void ParseCorePropertyPart(PackagePart part)
{
Stream stream = part.GetStream(FileMode.Open, FileAccess.Read);
// Create a reader that uses _nameTable so as to use the set of tag literals
// in effect as a set of atomic identifiers.
XmlTextReader reader = new XmlTextReader(stream, _nameTable);
//Prohibit DTD from the markup as per the OPC spec
reader.ProhibitDtd = true;
//This method expects the reader to be in ReadState.Initial.
//It will make the first read call.
PackagingUtilities.PerformInitailReadAndVerifyEncoding(reader);
//Note: After the previous method call the reader should be at the first tag in the markup.
//MoveToContent - Skips over the following - ProcessingInstruction, DocumentType, Comment, Whitespace, or SignificantWhitespace
//If the reader is currently at a content node then this function call is a no-op
if (reader.MoveToContent() != XmlNodeType.Element ||
(object)reader.NamespaceURI != PackageXmlStringTable.GetXmlStringAsObject(PackageXmlEnum.PackageCorePropertiesNamespace) ||
(object)reader.LocalName != PackageXmlStringTable.GetXmlStringAsObject(PackageXmlEnum.CoreProperties))
{
throw new XmlException(SR.Get(SRID.CorePropertiesElementExpected),
null, reader.LineNumber, reader.LinePosition);
}
// The schema is closed and defines no attributes on the root element.
if (PackagingUtilities.GetNonXmlnsAttributeCount(reader) != 0)
{
throw new XmlException(SR.Get(SRID.PropertyWrongNumbOfAttribsDefinedOn, reader.Name),
null, reader.LineNumber, reader.LinePosition);
}
// Iterate through property elements until EOF. Note the proper closing of all
// open tags is checked by the reader itself.
// This loop deals only with depth-1 start tags. Handling of element content
// is delegated to dedicated functions.
int attributesCount;
while (reader.Read() && reader.MoveToContent() != XmlNodeType.None)
{
// Ignore end-tags. We check element errors on opening tags.
if (reader.NodeType == XmlNodeType.EndElement)
{
continue;
}
// Any content markup that is not an element here is unexpected.
if (reader.NodeType != XmlNodeType.Element)
{
throw new XmlException(SR.Get(SRID.PropertyStartTagExpected),
null, reader.LineNumber, reader.LinePosition);
}
// Any element below the root should open at level 1 exclusively.
if (reader.Depth != 1)
{
throw new XmlException(SR.Get(SRID.NoStructuredContentInsideProperties),
null, reader.LineNumber, reader.LinePosition);
}
attributesCount = PackagingUtilities.GetNonXmlnsAttributeCount(reader);
// Property elements can occur in any order (xsd:all).
object localName = reader.LocalName;
PackageXmlEnum xmlStringIndex = PackageXmlStringTable.GetEnumOf(localName);
String valueType = PackageXmlStringTable.GetValueType(xmlStringIndex);
if (Array.IndexOf(_validProperties, xmlStringIndex) == -1) // An unexpected element is an error.
{
throw new XmlException(
SR.Get(SRID.InvalidPropertyNameInCorePropertiesPart, reader.LocalName),
null, reader.LineNumber, reader.LinePosition);
}
// Any element not in the valid core properties namespace is unexpected.
// The following is an object comparison, not a string comparison.
if ((object)reader.NamespaceURI != PackageXmlStringTable.GetXmlStringAsObject(PackageXmlStringTable.GetXmlNamespace(xmlStringIndex)))
{
throw new XmlException(SR.Get(SRID.UnknownNamespaceInCorePropertiesPart),
null, reader.LineNumber, reader.LinePosition);
}
if (String.CompareOrdinal(valueType, "String") == 0)
{
// The schema is closed and defines no attributes on this type of element.
if (attributesCount != 0)
{
throw new XmlException(SR.Get(SRID.PropertyWrongNumbOfAttribsDefinedOn, reader.Name),
null, reader.LineNumber, reader.LinePosition);
}
RecordNewBinding(xmlStringIndex, GetStringData(reader), true /*initializing*/, reader);
}
else if (String.CompareOrdinal(valueType, "DateTime") == 0)
{
int allowedAttributeCount = (object)reader.NamespaceURI ==
PackageXmlStringTable.GetXmlStringAsObject(PackageXmlEnum.DublinCoreTermsNamespace)
? 1 : 0;
// The schema is closed and defines no attributes on this type of element.
if (attributesCount != allowedAttributeCount)
{
throw new XmlException(SR.Get(SRID.PropertyWrongNumbOfAttribsDefinedOn, reader.Name),
null, reader.LineNumber, reader.LinePosition);
}
if (allowedAttributeCount != 0)
{
ValidateXsiType(reader,
PackageXmlStringTable.GetXmlStringAsObject(PackageXmlEnum.DublinCoreTermsNamespace),
_w3cdtf);
}
RecordNewBinding(xmlStringIndex, GetDateData(reader), true /*initializing*/, reader);
}
else // An unexpected element is an error.
{
Invariant.Assert(false, "Unknown value type for properties");
}
}
}
