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RSSParser.cpp
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RSSParser.cpp
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#include <iostream>
#include "tinyxml2.h"
using namespace tinyxml2;
using namespace std;
/** An RSS Feed has the following structure:
<rss>
<channel>
...
<item> ... </item>
<item> ... </item>
...
</feed>
</rss>
*/
/** Representation of a channel item.
*/
class RSSFeedItem
{
private:
const char *title;
const char *link;
const char *description;
const char *pubDate;
const char *guid;
const char *date;
public:
RSSFeedItem(
const char *title,
const char *link,
const char *description,
const char *pubDate,
const char *guid,
const char *date
):
title( title ),
link( link ),
description( description ),
pubDate( pubDate ),
guid( guid ),
date( date )
{}
void
print()
{
cout << title << endl;
}
};
/** Get the text of the tag name for an item.
*/
const char *
val( XMLElement *item, const char *tag )
{
XMLElement *child = item->FirstChildElement( tag );
return( child->GetText() );
}
/** Returns a new RSSFeedItem object for the XML
representation of the item.
*/
RSSFeedItem *
parseItem( XMLElement *item )
{
RSSFeedItem *fItem = new RSSFeedItem(
val( item, "title" ),
val( item, "link" ),
val( item, "description" ),
val( item, "pubDate" ),
val( item, "guid" ),
NULL
);
return( fItem );
}
/** A Sample program to parse the items.
*/
int
main()
{
XMLDocument doc;
doc.LoadFile( "test.xml" );
XMLElement *root = doc.FirstChildElement( "rss" );
XMLElement *channel = root->FirstChildElement( "channel" );
XMLElement *item = channel->FirstChildElement( "item" );
while( item )
{
RSSFeedItem *fItem = parseItem( item );
fItem->print();
item = item->NextSiblingElement();
}
}