public XMLNode Parse(string content)
{
XMLNode rootNode = new XMLNode();
rootNode["_text"] = "";
string nodeContents = "";
bool inElement = false;
bool collectNodeName = false;
bool collectAttributeName = false;
bool collectAttributeValue = false;
bool quoted = false;
string attName = "";
string attValue = "";
string nodeName = "";
string textValue = "";
bool inMetaTag = false;
bool inComment = false;
bool inCDATA = false;
XMLNodeList parents = new XMLNodeList();
XMLNode currentNode = rootNode;
for (int i = 0; i < content.Length; i++)
{
char c = content[i];
char cn = '~'; // unused char
char cnn = '~'; // unused char
char cp = '~'; // unused char
if ((i + 1) < content.Length) cn = content[i + 1];
if ((i + 2) < content.Length) cnn = content[i + 2];
if (i > 0) cp = content[i - 1];
if (inMetaTag)
{
if (c == QMARK && cn == GT)
{
inMetaTag = false;
i++;
}
continue;
}
else
{
if (!quoted && c == LT && cn == QMARK)
{
inMetaTag = true;
continue;
}
}
if (inComment)
{
if (cp == DASH && c == DASH && cn == GT)
{
inComment = false;
i++;
}
continue;
}
else
{
if (!quoted && c == LT && cn == EXCLAMATION)
{
if (content.Length > i + 9 && content.Substring(i, 9) == "<![CDATA[")
{
inCDATA = true;
i += 8;
}
else
{
inComment = true;
}
continue;
}
}
if (inCDATA)
{
if (c == SQR && cn == SQR && cnn == GT)
{
inCDATA = false;
i += 2;
continue;
}
textValue += c;
continue;
}
if (inElement)
{
if (collectNodeName)
{
if (c == SPACE)
{
collectNodeName = false;
}
else if (c == GT)
{
collectNodeName = false;
inElement = false;
}
if (!collectNodeName && nodeName.Length > 0)
{
if (nodeName[0] == SLASH)
{
// close tag
if (textValue.Length > 0)
{
currentNode["_text"] += textValue;
}
textValue = "";
nodeName = "";
currentNode = parents.Pop();
}
else
{
if (textValue.Length > 0)
{
currentNode["_text"] += textValue;
}
textValue = "";
XMLNode newNode = new XMLNode();
newNode["_text"] = "";
newNode["_name"] = nodeName;
if (currentNode[nodeName] == null)
{
currentNode[nodeName] = new XMLNodeList();
}
XMLNodeList a = (XMLNodeList)currentNode[nodeName];
a.Push(newNode);
parents.Push(currentNode);
currentNode = newNode;
nodeName = "";
}
}
else
{
nodeName += c;
}
}
else
{
if (!quoted && c == SLASH && cn == GT)
{
inElement = false;
collectAttributeName = false;
collectAttributeValue = false;
if (attName.Length > 0)
{
if (attValue.Length > 0)
{
currentNode["@" + attName] = attValue;
}
else
{
currentNode["@" + attName] = true;
}
}
i++;
currentNode = parents.Pop();
attName = "";
attValue = "";
}
else if (!quoted && c == GT)
{
inElement = false;
collectAttributeName = false;
collectAttributeValue = false;
if (attName.Length > 0)
{
currentNode["@" + attName] = attValue;
}
attName = "";
attValue = "";
}
else
{
if (collectAttributeName)
{
if (c == SPACE || c == EQUALS)
{
collectAttributeName = false;
collectAttributeValue = true;
}
else
{
attName += c;
}
}
else if (collectAttributeValue)
{
if (c == QUOTE || c == QUOTE2)
{
if (quoted)
{
collectAttributeValue = false;
currentNode["@" + attName] = attValue;
attValue = "";
attName = "";
quoted = false;
}
else
{
quoted = true;
}
}
else
{
if (quoted)
{
attValue += c;
}
else
{
if (c == SPACE)
{
collectAttributeValue = false;
currentNode["@" + attName] = attValue;
attValue = "";
attName = "";
}
}
}
}
else if (c == SPACE)
{
}
else
{
collectAttributeName = true;
attName = "" + c;
attValue = "";
quoted = false;
}
}
}
}
else
{
if (c == LT)
{
inElement = true;
collectNodeName = true;
}
else
{
textValue += c;
}
}
}
return rootNode;
}
public int Push(XMLNode item)
{
Add(item);
return this.Count;
}