<?php
/*
rss.inc.php
Copyright (C)2006  Angel Alberto Briceño Obregón ( angel (at) peruviansoft (dot) com )

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/


class image {
	var $title;
	var $url;
	var $link;
}

class channel {
	var $title;
	var $link;
	var $description;
	var $language;
	var $copyright;
	var $managingEditor;
	var $webMaster;
	function channel() {
		$this->image = new image;
		$this->items = new items;
	}
	
}
class item {
	var $title;
	var $link;
	var $description;
	var $author;
	var $category;
	var $comments;
	var $enclosure;
	var $guid;
	var $source;
	function set_object ($attrib, $value) {
		$this->$attrib = $value;
	}
}

class items {
	var $litems;
	var $num_items;
	function items() {
		$this->num_items = 0;
	}
	function add_item() {
		$this->litems[$this->num_items+1] = new item;
		$this->num_items += 1;
	}
}

class rss {
var $version;
var $url = '';
var $ubicacion = '';
var $in_item;
var $in_channel;
var $in_image;
	function rss ($url) {
		$this->url = $url;
		
		$this->channel = new channel;
		$this->parse();
	}
	function parse() {
		$this->fpurl = fopen($this->url,'r');
		
		while(!feof($this->fpurl)) {
			$again_end=false;
			$line = trim(fgets($this->fpurl,100000));
			$label = "";
			$type_label = "";
			$is_label = false;
			$content = "";
			$within_channel=false;
			$len_line = strlen($line)-1;
			for ($i = 0; $i <= $len_line; $i++) {
				$character = substr($line,$i,1);
				switch ($character) {
					case "<": // Empieza una etiqueta
						$again_end=false;
						$is_label = true;
						$label .= $character;
						break;

					case ">": // Termina una etiqueta
						if ($again_end) {
							$content.=">";
							$again_end=true;
						} else {
							$again_end=true;
							$label .= $character;
							$is_label = true;
						}
						break;

					default:

						if ($is_label) {
							if ($again_end) {
								$content.=$character;
								$again_end=true;
							} else {
								$type_label .= $character;
								$label.=$character;
								$again_end=false;
							}						
						} else {
							$content .= $character;
							$again_end=false;
						}
				}
			 	
			}
			$content=str_replace('&lt;','<',$content);
			switch ($type_label) {
				case "channel":
					$this->in_channel=true;
					break;
				case "image":
					$this->in_image=true;
					break;
				case "item":
					$this->in_item=true;
					$this->channel->items->add_item();
					break;
				case "/item":
					$this->in_item=false;
					break;
				case "/image":
					$this->in_image=false;
					break;
				case "/channel";
					$this->in_channel=false;
					break;
				case "title/title":
					if ($this->in_channel) {
						if ($this->in_item) {
							$l_i = $this->channel->items->num_items;
							$this->channel->items->litems[$l_i]->title=$content;
						} else {
							if ($this->in_image) {
								$this->channel->image->title=$content;
							} else {
								$this->channel->title=$content;
							}
						}
					}
					break;
				case "link/link":
					if ($this->in_channel) {
						if ($this->in_item) {
							$l_i = $this->channel->items->num_items;
							$this->channel->items->litems[$l_i]->link=$content;
						} else {
							if ($this->in_image) {
								$this->channel->image->link=$content;
							} else {
								$this->channel->link=$content;
							}
						}
					}
					break;
				case "description/description":
					if ($this->in_channel) {
						if ($this->in_item) {
							$l_i = $this->channel->items->num_items;
							$this->channel->items->litems[$l_i]->description=$content;
						} else {
							$this->channel->description=$content;
						}
					}
					break;
				case "language/language":
					if ($this->in_channel) {
						if ($this->in_item) {
						
						} else {
							$this->channel->language=$content;
						}
					}
					break;
				case "copyright/copyright":
					if ($this->in_channel) {
						if ($this->in_item) {
						
						} else {
							$this->channel->copyright=$content;
						}
					}
					break;
				case "managingEditor/managingEditor":
					if ($this->in_channel) {
						if ($this->in_item) {
						
						} else {
							$this->channel->managingEditor=$content;
						}
					}
					break;
				case "webMaster/webMaster":
					if ($this->in_channel) {
						if ($this->in_item) {
						
						} else {
							$this->channel->webMaster=$content;
						}
					}
					break;	
				case "guid isPermaLink=\"true\"/guid":
					if ($this->in_channel) {
						if ($this->in_item) {
							$l_i = $this->channel->items->num_items;
							$this->channel->items->litems[$l_i]->guid=$content;
						} else {
							
						}
					}
					break;	
				case "guid/guid":
					if ($this->in_channel) {
						if ($this->in_item) {
							$l_i = $this->channel->items->num_items;
							$this->channel->items->litems[$l_i]->guid=$content;
						} else {
							
						}
					}
					break;	
				case "category/category":
					if ($this->in_channel) {
						if ($this->in_item) {
							$l_i = $this->channel->items->num_items;
							$this->channel->items->litems[$l_i]->category=$content;
						} else {
						
						}
					}
					break;
				case "url/url":
					if ($this->in_channel) {
						if ($this->in_item) {
						
						} else {
							if ($this->in_image) {
								$this->channel->image->url=$content;
							} else {
								
							}
						}
					}
					break;
			}
		}
	}
	function display() {
		include("template.html.php");
	}
}
//$oRss = new rss("http://www.securiteam.com/securiteam.rss");
?>