private XMLElement processBlock(Match tag, ref int index)
{
XMLElement result = new XMLElement("");
string tagStr = tag.Value;
if (!RE_XML_TAG_CLOSE.Match(tagStr).Success)
{
var tagMatch = RE_XML_TAG_PARTS.Match(tagStr);
string name = tagMatch.Groups[1].Value;
bool selfClose = RE_XML_TAG_SELFCLOSE.Match(tagStr).Success;
string attrs = tagMatch.Groups[2].Value;
var attributes = parseAttributes(attrs);
result.Name = name;
result.setAttributes(attributes);
index += tagMatch.Index + tagMatch.Length;
if (!selfClose)
{
string textPart = "";
bool closed = false;
while ((!closed) && ((tag = nextTagMatch(index)).Success))
{
textPart = m_ProcString.Substring(index, tag.Index - index);
result.appendText(textPart.Trim());
if ((tagMatch = RE_XML_TAG_CLOSE.Match(tag.Value)).Success) // if closing tag
{
if (tagMatch.Groups[1].Value == name) // for this entity
{
closed = true; // exit
index = tag.Index + tag.Length; // pass last position to caller
}
else // not this entity
{
throw new Exception("XMLParser error: Intersection of closing tags at symbol "
+ tag.Index.ToString() + ".");
}
}
else // opening tag
{
index = tag.Index;
result.addChild(processBlock(tag, ref index));
}
}
}
}
else
{
throw new Exception("XMLParser error: Closing tag before opening at symbol "
+ tag.Index.ToString() + ".");
}
return(result);
}
public XMLElement parse(string inputString)
{
this.m_ProcString = clearInput(inputString);
XMLElement doc = processDocument();
return(doc);
}
public bool addChild(XMLElement newChild)
{
bool result = false;
m_Children.Add(newChild);
result = true;
return(result);
}
private XMLElement processDocument()
{
XMLElement doc = new XMLElement("xml");
var match = RE_XML_ROOT.Match(m_ProcString); // check prologue
if ((!match.Success) || (match.Index > 0))
{
throw new Exception("Not a valid XML prologue.");
}
int startIndex = match.Index + match.Length;
Match rootTag = nextTagMatch(startIndex);
startIndex = rootTag.Index;
XMLElement root = processBlock(rootTag, ref startIndex);
doc.addChild(root);
return(doc);
}
