/// <summary>
/// This function is responsible for parsing the XML
/// Actually this function will call the exact parse function
/// depending upon the type of XML Recieved
/// </summary>
/// <param name="XMLFilename"> </param>
/// <param name="outStruct"> </param>
/// <param name="TagName"> </param>
public int ParseXML(string XMLFilename, out XMLSTRUCT outStruct, string TagName)
{
// Declare and initializes the iElements to 0
int iElements = 0;
// Initializes the outStruct variable of this function
// this structure is used to store the values of parsed XML
outStruct = new XMLSTRUCT();
// The following 12 lines of code checks the Type of XML recieved
// and calls are made to there corresponding parser function
// which actually are reponsible for parsing the XML
// all the parse functions are user defined functions
// the Number of Parsed records are stores in the iElements
// variable which is returned by the function
if (0 == TagName.CompareTo("AUTH"))
{
iElements = ParseAUTHXML(XMLFilename, out outStruct);
}
else if (0 == TagName.CompareTo("USERLIST"))
{
iElements = ParseUSERLISTXML(XMLFilename, out outStruct);
}
else if (0 == TagName.CompareTo("SHOWFILES"))
{
iElements = ParseSHOWFILESXML(XMLFilename, out outStruct);
}
else if (0 == TagName.CompareTo("SEARCH"))
{
iElements = ParseSHOWFILESXML(XMLFilename, out outStruct);
}
else if (0 == TagName.CompareTo("ERROR"))
{
iElements = ParseERRORXML(XMLFilename, out outStruct);
}
else if (0 == TagName.CompareTo("SERVERSEARCH"))
{
iElements = ParseSERVERSEARCHXML(XMLFilename, out outStruct);
}
else if (0 == TagName.CompareTo("CHAT"))
{
iElements = ParseCHATXML(XMLFilename, out outStruct);
}
// Returns the iElements variable to the calling function
return(iElements);
}
/// <summary>
/// Actual Parsing of ERROR XML
/// </summary>
/// <param name="Filename"> </param>
/// <param name="outStruct"> </param>
protected int ParseERRORXML(string Filename, out XMLSTRUCT outStruct)
{
// initializes all the required variables
InitVariables();
// Initialize outStruct variable of this function
outStruct = new XMLSTRUCT();
// Process the XML document syncronously
document.async = false;
// load the xml document in memory for parsing
if (document.load(Filename))
{
// get the first element of the XML
element = document.documentElement;
// get the first child of the element
node = element.firstChild;
// extracts the node list present under the node
nodeList = node.childNodes;
// iTags will assigns to the number of nodes present
// in node list
iTags = nodeList.length;
// Initialize the ERROR sructure of the outStruct
// variable
outStruct.ERROR = new XMLSTRUCT.__ERROR();
// move the node to the next node of the nodelist
node = nodeList.nextNode();
// Extract each value from its specific node
for (iCounter = 0; iCounter < iTags; iCounter++)
{
// gets the attribute map that is how many attributes
// are present in the node
nodeMap = node.attributes;
// extract the next node from the node map
ChildNode = nodeMap.nextNode();
// The following 9 lines of code will extract the
// various attribute values from the XML node
// and fills it to the outStruct's corresponding
// structure
do
{
if (0 == ChildNode.nodeName.CompareTo("errorcode"))
{
outStruct.ERROR.iErrCode = Convert.ToInt32(ChildNode.nodeValue);
}
else if (0 == ChildNode.nodeName.CompareTo("severity"))
{
outStruct.ERROR.sSeverity = ChildNode.nodeValue.ToString();
}
else if (0 == ChildNode.nodeName.CompareTo("description"))
{
outStruct.ERROR.sDescription = ChildNode.nodeValue.ToString();
}
} while(null != (ChildNode = nodeMap.nextNode()));
// now move to next node
node = nodeList.nextNode();
}
}
// Return the number of nodes parsed for the values
return(iCounter == iTags?iCounter:0);
}
