public static Relationships Load(Package package, string source, Stream xml)
{
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(xml);
XmlElement typesRoot = null;
// get Types root element
foreach (var node in xmlDoc.ChildNodes)
{
// ignore if not an element
var elt = node as XmlElement;
if (elt == null)
{
continue;
}
if (string.Equals(elt.NamespaceURI, Namespaces.Relationships, StringComparison.Ordinal) &&
string.Equals(elt.LocalName, "Relationships"))
{
typesRoot = elt;
break;
}
}
if (typesRoot == null)
{
throw new Exception("Invalid [Content_Types].xml. Missing Types root element.");
}
var rels = new Relationships(package, source);
// now parse content types
foreach (XmlNode node in typesRoot.ChildNodes)
{
var elt = node as XmlElement;
// ignore if not an element
if (elt == null)
{
continue;
}
// ignore if not the right namespace
if (!string.Equals(elt.NamespaceURI, Namespaces.Relationships, StringComparison.Ordinal) ||
!string.Equals(elt.LocalName, "Relationship", StringComparison.Ordinal))
{
continue;
}
// read target mode; default to internal
bool external = string.Equals(elt.GetAttribute("TargetMode"), "External", StringComparison.Ordinal);
// create the rel
var rel = new Relationship(
package,
source,
elt.GetAttribute("Id"),
elt.GetAttribute("Type"),
elt.GetAttribute("Target"),
external);
rels.Add(rel.Id, rel);
}
return(rels);
}