private void WriteDocument(Variant document)
{
if ((m_mode & XmlMode.NoHeader) == 0)
{
WriteHeader();
}
if ((m_mode & XmlMode.Preserve) != 0)
{
string rootName = "";
if (document.Is(VariantBase.EnumType.Mapping))
{
foreach (VariantItem item in document)
{
if (item.Key == XmlConst.Text)
{
throw new VariantException("Encountered text in document node");
}
else if (item.Key == XmlConst.Attributes)
{
throw new VariantException("Encountered attributes in document node");
}
else if (item.Key == XmlConst.Instruction)
{
WriteInstruction(item.Value);
}
else if (item.Key == XmlConst.Comment)
{
WriteComment(item.Value);
}
else
{
if (rootName.Length == 0)
{
rootName = item.Key;
}
else
{
throw new VariantException(string.Format("Illegal element {0} encountered in document, expecting single element {1} at root", item.Key, rootName));
}
Push(rootName);
WriteElement(item.Value);
Pop();
}
}
}
else
{
throw new VariantException("Invalid document structure, root node must be a Dictionary or Bag");
}
}
else
{
Push();
WriteVariant(document);
Pop();
}
}
private static void SelectImpl(Variant input, string path, Variant result)
{
string head = "", tail = "";
Match myMatch = Regex.Match(path, @"[^/]+");
if (myMatch.Success)
{
head = myMatch.Value;
tail = path.Substring(myMatch.Index + myMatch.Length);
}
else
{
result.Add(input);
return;
}
string node = "", pred_key = "", pred_val = "";
myMatch = Regex.Match(head, @"^(\*|\w+)(\[@?(\w+)=""?(\w+)""?\])?");
if (myMatch.Success)
{
node = myMatch.Groups[1].Value;
pred_key = myMatch.Groups[3].Value;
pred_val = myMatch.Groups[4].Value;
}
else
{
throw new VariantException("Select path has invalid syntax: " + head);
}
Variant nodes = new Variant(EnumType.List);
if (node.Length == 0 || node == "*")
{
foreach (VariantItem item in input)
{
nodes.Add(item.Value);
}
}
else if (input.Is(EnumType.Mapping))
{
foreach (VariantItem item in input.Range(node))
{
nodes.Add(item.Value);
}
}
foreach (VariantItem item in nodes)
{
if (pred_key.Length == 0 || (item.Value.Is(EnumType.Mapping) && item.Value.ContainsKey(pred_key) && item.Value[pred_key].AnyCast().As <string>() == pred_val))
{
SelectImpl(item.Value, tail, result);
}
}
}
private void WriteInstruction(Variant instruction)
{
if (instruction.Is(VariantBase.EnumType.Mapping) && instruction.ContainsKey(XmlConst.Target) && instruction.ContainsKey(XmlConst.Data))
{
m_writer.WriteProcessingInstruction(instruction[XmlConst.Target].As <string>(), instruction[XmlConst.Data].As <string>());
}
else
{
throw new VariantException(string.Format("Expecting dictionary containing '{0}' and '{1}' for processing instruction", XmlConst.Target, XmlConst.Data));
}
}