private void WriteXmlStartTagsForPackageProperties()
{
_xmlWriter.WriteStartDocument();
// <coreProperties
_xmlWriter.WriteStartElement(PackageXmlStringTable.GetXmlString(PackageXmlEnum.CoreProperties), // local name
PackageXmlStringTable.GetXmlString(PackageXmlEnum.PackageCorePropertiesNamespace)); // namespace
// xmlns:dc
_xmlWriter.WriteAttributeString(PackageXmlStringTable.GetXmlString(PackageXmlEnum.XmlNamespacePrefix),
PackageXmlStringTable.GetXmlString(PackageXmlEnum.DublinCorePropertiesNamespacePrefix),
null,
PackageXmlStringTable.GetXmlString(PackageXmlEnum.DublinCorePropertiesNamespace));
// xmlns:dcterms
_xmlWriter.WriteAttributeString(PackageXmlStringTable.GetXmlString(PackageXmlEnum.XmlNamespacePrefix),
PackageXmlStringTable.GetXmlString(PackageXmlEnum.DublincCoreTermsNamespacePrefix),
null,
PackageXmlStringTable.GetXmlString(PackageXmlEnum.DublinCoreTermsNamespace));
// xmlns:xsi
_xmlWriter.WriteAttributeString(PackageXmlStringTable.GetXmlString(PackageXmlEnum.XmlNamespacePrefix),
PackageXmlStringTable.GetXmlString(PackageXmlEnum.XmlSchemaInstanceNamespacePrefix),
null,
PackageXmlStringTable.GetXmlString(PackageXmlEnum.XmlSchemaInstanceNamespace));
}
// This method validates xsi:type="dcterms:W3CDTF"
// The value of xsi:type is a qualified name. It should have a prefix that matches
// the xml namespace (ns) within the scope and the name that matches name
// The comparisons should be case-sensitive comparisons
internal static void ValidateXsiType(XmlReader reader, object ns, string name)
{
// Get the value of xsi;type
string typeValue = reader.GetAttribute(PackageXmlStringTable.GetXmlString(PackageXmlEnum.Type),
PackageXmlStringTable.GetXmlString(PackageXmlEnum.XmlSchemaInstanceNamespace));
// Missing xsi:type
if (typeValue == null)
{
throw new XmlException(SR.Format(SR.UnknownDCDateTimeXsiType, reader.Name),
null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)reader).LinePosition);
}
int index = typeValue.IndexOf(':');
// The value of xsi:type is not a qualified name
if (index == -1)
{
throw new XmlException(SR.Format(SR.UnknownDCDateTimeXsiType, reader.Name),
null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)reader).LinePosition);
}
// Check the following conditions
// The namespace of the prefix (string before ":") matches "ns"
// The name (string after ":") matches "name"
if (!object.ReferenceEquals(ns, reader.LookupNamespace(typeValue.Substring(0, index))) ||
string.CompareOrdinal(name, typeValue.Substring(index + 1, typeValue.Length - index - 1)) != 0)
{
throw new XmlException(SR.Format(SR.UnknownDCDateTimeXsiType, reader.Name),
null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)reader).LinePosition);
}
}
// Write the property elements and clear _dirty.
private void SerializeDirtyProperties()
{
Debug.Assert(_xmlWriter != null);
// Create a property element for each non-null entry.
foreach (KeyValuePair <PackageXmlEnum, object> entry in _propertyDictionary)
{
Debug.Assert(entry.Value != null);
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();
}
// Mark properties as saved.
_dirty = false;
}
// Deserialize properties part.
private void ParseCorePropertyPart(PackagePart part)
{
XmlReaderSettings xrs = new XmlReaderSettings();
xrs.NameTable = _nameTable;
using (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.
using (XmlReader reader = XmlReader.Create(stream, xrs))
{
//This method expects the reader to be in ReadState.Initial.
//It will make the first read call.
PackagingUtilities.PerformInitialReadAndVerifyEncoding(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.CorePropertiesElementExpected,
null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)reader).LinePosition);
}
// The schema is closed and defines no attributes on the root element.
if (PackagingUtilities.GetNonXmlnsAttributeCount(reader) != 0)
{
throw new XmlException(SR.Format(SR.PropertyWrongNumbOfAttribsDefinedOn, reader.Name),
null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)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.PropertyStartTagExpected,
null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)reader).LinePosition);
}
// Any element below the root should open at level 1 exclusively.
if (reader.Depth != 1)
{
throw new XmlException(SR.NoStructuredContentInsideProperties,
null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)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(s_validProperties, xmlStringIndex) == -1) // An unexpected element is an error.
{
throw new XmlException(
SR.Format(SR.InvalidPropertyNameInCorePropertiesPart, reader.LocalName),
null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)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.UnknownNamespaceInCorePropertiesPart,
null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)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.Format(SR.PropertyWrongNumbOfAttribsDefinedOn, reader.Name),
null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)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.Format(SR.PropertyWrongNumbOfAttribsDefinedOn, reader.Name),
null, ((IXmlLineInfo)reader).LineNumber, ((IXmlLineInfo)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.
{
Debug.Fail("Unknown value type for properties");
}
}
}
}