<?php // -*-php-*-
if (!defined("SLASHHEAD")) {
define("SLASHHEAD",1);
/**
* Classes SlashStory and SlashHeadlines
*
* Copyright (c) 2001 Sandip Bhattacharya http://www.sandipb.net
*
* $Id: SlashHeadlines.php,v 1.2 2001/03/09 23:13:48 sandipb Exp $
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the credit for the
* specific area of functionality facilitated by this code is not claimed
* by the user.
*
* I am really interested in feedbacks. Please send
* comments/patches/criticism/flames to <sandipb@bigfoot.com>.
* You will get due credits. ;)
*
*/
////////////////////////////////
// A Slashdot Story
//////////////////////////////
class SlashStory{
var $title;
var $url;
var $time;
var $author;
var $department;
var $topic;
var $comments;
var $section;
var $image;
var $storyptr;
var $lastchars;
function suck($o){
$this->title = $o->title;
$this->url = $o->url;
$this->time = $o->time;
$this->author = $o->author;
$this->department = $o->department;
$this->topic = $o->topic;
$this->comments = $o->comments;
$this->section = $o->section;
$this->image = $o->image;
}//function suck
} //class SlashStory
////////////////////////////////
/// A bunch of Slashdot stories
////////////////////////////////
class SlashHeadlines {
var $last_update; //time() of last update
var $stories = Array();
var $file_name = "slashdot.dat";
var $url = "http://www.slashdot.org/slashdot.xml";
var $do_cache = 1;
var $slash_image_prefix = "http://images.slashdot.org/topics/";
var $interval = 1800; //half an hour
function SlashHeadlines(){
} //function SlashHeadlines
function set_local_file($f){
$this->file_name = $f;
}//function set_local_file
function set_cache($docache){
$this->do_cache = $docache;
} // function set_cache
function set_update_interval($intervalsecs){
$this->interval = $intervalsecs;
} // function set_update_interval
function set_url($u){
$this->url = $u;
} //function set_url
function set_image_prefix($prefix){
$this->slash_image_prefix = $prefix;
} //function get_image_url
function remote_update(){
$this->storyptr=0;
$stuff = @file($this->url);
if(!$stuff)
return 0;
$xmldata="";
while (list($i,$s) = each($stuff))
$xmldata.=$s;
$this->strip_news($xmldata);
if ($this->do_cache){
if (!$this->write_file())
return 0;
}
return 1;
} //function remote_update
function update(){
if ($this->do_cache){
//if no cache file try once
if(!file_exists($this->file_name)) {
if(!$this->remote_update()) {
return 0; //bummer!!
}
}
//try to read the cache file
if (!$this->read_file()) {
return 0;
}
//check cached time
if ((time() - $this->last_update) < ($this->interval)) {
return 1; //cache is sufficient
}
}
if (!$this->remote_update()) {
return 0;
}
return 1;
} //function update
function get_date($t){
return date("l j F Y, g:i a T", $t);
} //function get_date
function get_last_update(){
return $this->get_date($this->last_update);
} //function get_last_update
function read_file(){
if(!($f = @fopen($this->file_name,"r")))
return 0;
$stuff = fread($f,filesize($this->file_name));
fclose($f);
$fakeHeadlines = unserialize($stuff);
$this->suck($fakeHeadlines);
return 1;
} //function read_file
function write_file(){
if(!($f = @fopen($this->file_name,"w")))
return 0;
$this->last_update = time();
$fakeHeadlines = serialize($this);
fwrite($f,$fakeHeadlines);
return 1;
}//function write_file
function suck($o){
$this->last_update = $o->last_update;
for ($x = 0; $x < count($o->stories);$x++){
$this->stories[$x] = new SlashStory();
$this->stories[$x]->suck($o->stories[$x]);
}
}//function suck
function strip_news($content){
$parser = xml_parser_create();
xml_set_object($parser,&$this);
xml_set_element_handler($parser,"begin_element","end_element");
xml_set_character_data_handler($parser,"characters");
if (!xml_parse($parser,$content))
die("XML parse error: ".
xml_error_string(xml_get_error_code($parser))." at line ".
xml_get_current_line_number($parser));
} //function strip_news
function begin_element($parser,$tagname){
switch($tagname){
case "STORY":
$this->stories[$this->storyptr] = new SlashStory();
break;
}
} //function begin_element
function end_element($parser,$tagname){
switch($tagname){
case "STORY":
// print "Added story ".$this->storyptr.") ".$this->stories[$this->storyptr]->title."<br />";
$this->storyptr++;
break;
case "TITLE":
$this->stories[$this->storyptr]->title = $this->lastchars;
break;
case "URL":
$this->stories[$this->storyptr]->url = $this->lastchars;
break;
case "TIME":
$this->stories[$this->storyptr]->time = $this->lastchars;
break;
case "AUTHOR":
$this->stories[$this->storyptr]->author = $this->lastchars;
break;
case "DEPARTMENT":
$this->stories[$this->storyptr]->department = $this->lastchars;
break;
case "TOPIC":
$this->stories[$this->storyptr]->topic = $this->lastchars;
break;
case "COMMENTS":
$this->stories[$this->storyptr]->comments = $this->lastchars;
break;
case "SECTION":
$this->stories[$this->storyptr]->section = $this->lastchars;
break;
case "IMAGE":
$this->stories[$this->storyptr]->image =
$this->slash_image_prefix.$this->lastchars;
break;
}
}//function end_elements
function characters($parser,$data){
if (strlen(trim($data)))
$this->lastchars = $data;
}//function characters
function get_num_stories(){
return count($this->stories);
}//function get_num_stories
}//class SlashHeadlines
} // if !defined
?>
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