private void Enforce(XDoc doc, bool removeIllegalElements, bool isRoot)
{
if (doc.IsEmpty)
{
return;
}
// process child elements
List <XDoc> list = doc.Elements.ToList();
foreach (XDoc child in list)
{
Enforce(child, removeIllegalElements, false);
}
// skip processing of root element
if (!isRoot)
{
// process element
Element elementRule;
if (!Elements.TryGetValue(doc.Name, out elementRule))
{
// element is not valid; determine what to do with it
if (removeIllegalElements)
{
// replace it with its contents
doc.ReplaceWithNodes(doc);
}
else
{
StringBuilder attributes = new StringBuilder();
foreach (XmlAttribute attribute in doc.AsXmlNode.Attributes)
{
attributes.Append(" ");
attributes.Append(attribute.OuterXml);
}
// replace it with text version of itself
if (doc.AsXmlNode.ChildNodes.Count == 0)
{
doc.AddBefore("<" + doc.Name + attributes.ToString() + "/>");
doc.Remove();
}
else
{
doc.AddBefore("<" + doc.Name + attributes.ToString() + ">");
doc.AddAfter("</" + doc.Name + ">");
doc.ReplaceWithNodes(doc);
}
}
return;
}
else if (doc.Name != elementRule.Name)
{
// element has an obsolete name, substitute it
doc.Rename(elementRule.Name);
}
// process attributes
List <XmlAttribute> attributeList = new List <XmlAttribute>();
foreach (XmlAttribute attribute in doc.AsXmlNode.Attributes)
{
attributeList.Add(attribute);
}
// remove unsupported attributes
if (!elementRule.Attributes.ContainsKey("*"))
{
foreach (XmlAttribute attribute in attributeList)
{
Attribute attributeRule;
elementRule.Attributes.TryGetValue(attribute.Name, out attributeRule);
if ((attributeRule == null) && (_wildcardElement != null))
{
_wildcardElement.Attributes.TryGetValue(attribute.Name, out attributeRule);
}
if ((attributeRule == null) || ((attributeRule.LegalValues.Length > 0) && (Array.BinarySearch <string>(attributeRule.LegalValues, attribute.Value) < 0)))
{
doc.RemoveAttr(attribute.Name);
}
}
}
// add default attributes
foreach (Attribute attributeRule in elementRule.Attributes.Values)
{
if ((attributeRule.DefaultValue != null) && (doc.AsXmlNode.Attributes[attributeRule.Name] == null))
{
doc.Attr(attributeRule.Name, attributeRule.DefaultValue);
}
}
// process empty element
if (list.Count == 0)
{
// check if the contents are empty
string contents = doc.Contents;
if ((contents.Trim().Length == 0) && (contents.IndexOf('\u00A0') < 0))
{
switch (elementRule.Mode)
{
case ProcessingMode.PadEmpty:
// add ' '
doc.ReplaceValue("\u00A0");
break;
case ProcessingMode.RemoveEmpty:
doc.Remove();
break;
}
}
}
}
}
private void Enforce(XDoc doc, bool removeIllegalElements, bool isRoot)
{
if(doc.IsEmpty) {
return;
}
// process child elements
List<XDoc> list = doc.Elements.ToList();
foreach(XDoc child in list) {
Enforce(child, removeIllegalElements, false);
}
// skip processing of root element
if(!isRoot) {
// process element
Element elementRule;
if(!Elements.TryGetValue(doc.Name, out elementRule)) {
// element is not valid; determine what to do with it
if(removeIllegalElements) {
// replace it with its contents
doc.ReplaceWithNodes(doc);
} else {
StringBuilder attributes = new StringBuilder();
foreach(XmlAttribute attribute in doc.AsXmlNode.Attributes) {
attributes.Append(" ");
attributes.Append(attribute.OuterXml);
}
// replace it with text version of itself
if(doc.AsXmlNode.ChildNodes.Count == 0) {
doc.AddBefore("<" + doc.Name + attributes.ToString() + "/>");
doc.Remove();
} else {
doc.AddBefore("<" + doc.Name + attributes.ToString() + ">");
doc.AddAfter("</" + doc.Name + ">");
doc.ReplaceWithNodes(doc);
}
}
return;
} else if(doc.Name != elementRule.Name) {
// element has an obsolete name, substitute it
doc.Rename(elementRule.Name);
}
// process attributes
List<XmlAttribute> attributeList = new List<XmlAttribute>();
foreach(XmlAttribute attribute in doc.AsXmlNode.Attributes) {
attributeList.Add(attribute);
}
// remove unsupported attributes
if(!elementRule.Attributes.ContainsKey("*")) {
foreach(XmlAttribute attribute in attributeList) {
Attribute attributeRule;
elementRule.Attributes.TryGetValue(attribute.Name, out attributeRule);
if((attributeRule == null) && (_wildcardElement != null)) {
_wildcardElement.Attributes.TryGetValue(attribute.Name, out attributeRule);
}
if((attributeRule == null) || ((attributeRule.LegalValues.Length > 0) && (Array.BinarySearch<string>(attributeRule.LegalValues, attribute.Value) < 0))) {
doc.RemoveAttr(attribute.Name);
}
}
}
// add default attributes
foreach(Attribute attributeRule in elementRule.Attributes.Values) {
if((attributeRule.DefaultValue != null) && (doc.AsXmlNode.Attributes[attributeRule.Name] == null)) {
doc.Attr(attributeRule.Name, attributeRule.DefaultValue);
}
}
// process empty element
if(list.Count == 0) {
// check if the contents are empty
string contents = doc.Contents;
if((contents.Trim().Length == 0) && (contents.IndexOf('\u00A0') < 0)) {
switch(elementRule.Mode) {
case ProcessingMode.PadEmpty:
// add ' '
doc.ReplaceValue("\u00A0");
break;
case ProcessingMode.RemoveEmpty:
doc.Remove();
break;
}
}
}
}
}
