RSS Reader Plug-in for Internet Explorer

/*
	Project		: RSS Reader plugin for Internet Explorer
	File Name	: RRPRssParser.cpp
	Date		: 
	Purpose		: It is the parser for the rss file. 
	Note		: 
	Send comments 
	or Bugs to	: prafulla_t@users.sourceforge.net
*/
#include "StdAfx.h"
#include "RRPRssParser.h"

#include <iostream>
#include <string>

RRPRssParser::RRPRssParser(const char *nameOfFile) {
	doc = new TiXmlDocument(nameOfFile);
	errorCode = doc->LoadFile();
	//Store it in private variable,for future reference
	fileName = new char[strlen(nameOfFile) + 1];
	strcpy(fileName,nameOfFile);
}

RRPRssParser::~RRPRssParser(void) {
	if(fileName)
		delete fileName;
	if(doc)
		delete doc;
	int n = rssItemVector.size();
	for(int i = 0; i< n;i++)
		delete rssItemVector[i];
}

//Parses the RSS file,and fills up all the required structurs  
//It SHOULD be called before getting the reference of RRPRssItemIterator
void RRPRssParser::parse() {
	TiXmlElement *rootElement = doc->FirstChildElement();
	TiXmlElement *itemElement;
	TiXmlElement *titleElement,*linkElement,*descElement;
	RRPRssItem *rssItem = NULL;

	if(rootElement) {
		rootElement = doc->FirstChildElement();
		if(!rootElement)
			return;
		rootElement = rootElement->FirstChildElement();
		if(!rootElement)
			return;
		//Now getting Item 
		itemElement = rootElement->FirstChildElement("item"); 
		while(itemElement) {
			titleElement = itemElement->FirstChildElement("title");
			linkElement = itemElement->FirstChildElement("link");
			if(!linkElement)
				linkElement = itemElement->FirstChildElement("guid");
			descElement = itemElement->FirstChildElement("description");
/*			pubElement =  itemElement->FirstChildElement("pubDate");
			if(!pubElement)
				return;*/
			rssItem = new RRPRssItem();

			if(titleElement && (titleElement->GetText())) 
					rssItem->setTitle(titleElement->GetText())			;
			else 
				rssItem->setTitle("No Title,Have a look at Description!!");

			if(linkElement && (linkElement->GetText())) 
				rssItem->setLink(linkElement->GetText());
			else
				rssItem->setLink("No Link");
			
			if(descElement && (descElement->GetText()))
				rssItem->setDescription(descElement->GetText());
			else
				rssItem->setDescription("No Description");
			
/*			if(pubElement)
				std::cout << pubElement->ValueTStr().c_str() << " :: " <<  pubElement->GetText() << std::endl;
			else
				std::cout << "No PubDate" << std::endl;*/
			rssItemVector.push_back(rssItem);
			itemElement = itemElement->NextSiblingElement();
		}

		}

}

//Returns true if there is no error
BOOL RRPRssParser::isError() {
	return !errorCode;
}

//Returns Error String if there is Error and "No Error" string otherwise
const char* RRPRssParser::getErrorString() {
	if(errorCode)
		return "No Error";
	return doc->ErrorDesc();
}

BOOL RRPRssParser::hasNext() {
	return (index+1) < (rssItemVector.size());
	
}

//Returns Current RssItem
RRPRssItem* RRPRssParser::getItem() {
	return rssItemVector[++index];
}