2013-02-18 03:48:21 +01:00
|
|
|
<?php
|
|
|
|
|
|
|
|
namespace PicoFeed;
|
|
|
|
|
2013-04-07 03:14:52 +02:00
|
|
|
require_once __DIR__.'/Parser.php';
|
|
|
|
require_once __DIR__.'/RemoteResource.php';
|
|
|
|
|
2013-02-18 03:48:21 +01:00
|
|
|
class Reader
|
|
|
|
{
|
|
|
|
private $url = '';
|
|
|
|
private $content = '';
|
|
|
|
|
|
|
|
|
|
|
|
public function __construct($content = '')
|
|
|
|
{
|
|
|
|
$this->content = $content;
|
|
|
|
|
|
|
|
return $this;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2013-04-07 03:14:52 +02:00
|
|
|
public function download($url, $last_modified = '', $etag = '', $timeout = 5, $user_agent = 'PicoFeed (https://github.com/fguillot/picoFeed)')
|
2013-02-18 03:48:21 +01:00
|
|
|
{
|
|
|
|
if (strpos($url, 'http') !== 0) {
|
|
|
|
|
|
|
|
$url = 'http://'.$url;
|
|
|
|
}
|
|
|
|
|
2013-04-07 03:14:52 +02:00
|
|
|
$resource = new RemoteResource($url, $timeout, $user_agent);
|
|
|
|
$resource->setLastModified($last_modified);
|
|
|
|
$resource->setEtag($etag);
|
|
|
|
$resource->execute();
|
2013-04-06 15:19:29 +02:00
|
|
|
|
2013-04-07 03:14:52 +02:00
|
|
|
$this->content = $resource->getContent();
|
|
|
|
$this->url = $resource->getUrl();
|
2013-04-06 15:19:29 +02:00
|
|
|
|
2013-04-07 03:14:52 +02:00
|
|
|
return $resource;
|
2013-04-06 15:19:29 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2013-02-18 03:48:21 +01:00
|
|
|
public function getContent()
|
|
|
|
{
|
|
|
|
return $this->content;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
public function getUrl()
|
|
|
|
{
|
|
|
|
return $this->url;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2013-02-24 20:03:14 +01:00
|
|
|
public function getFirstTag($data)
|
2013-02-18 03:48:21 +01:00
|
|
|
{
|
2013-03-22 00:58:52 +01:00
|
|
|
// Strip HTML comments
|
|
|
|
$data = preg_replace('/<!--(.*)-->/Uis', '', $data);
|
|
|
|
|
|
|
|
// Find <?xml version....
|
2013-02-24 20:03:14 +01:00
|
|
|
if (strpos($data, '<?xml') !== false) {
|
2013-02-18 03:48:21 +01:00
|
|
|
|
2013-02-24 20:03:14 +01:00
|
|
|
$data = substr($data, strrpos($data, '?>') + 2);
|
2013-02-18 03:48:21 +01:00
|
|
|
|
2013-03-22 00:58:52 +01:00
|
|
|
// Find the first tag
|
2013-02-24 20:03:14 +01:00
|
|
|
$open_tag = strpos($data, '<');
|
|
|
|
$close_tag = strpos($data, '>');
|
2013-02-18 03:48:21 +01:00
|
|
|
|
2013-02-24 20:03:14 +01:00
|
|
|
return substr($data, $open_tag, $close_tag);
|
2013-02-18 03:48:21 +01:00
|
|
|
}
|
|
|
|
|
2013-02-24 20:03:14 +01:00
|
|
|
return $data;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
public function getParser($discover = false)
|
|
|
|
{
|
|
|
|
$first_tag = $this->getFirstTag($this->content);
|
|
|
|
|
2013-04-07 03:14:52 +02:00
|
|
|
if (strpos($first_tag, '<feed') !== false) {
|
2013-02-18 03:48:21 +01:00
|
|
|
|
2013-04-05 05:34:07 +02:00
|
|
|
require_once __DIR__.'/Parsers/Atom.php';
|
2013-02-18 03:48:21 +01:00
|
|
|
return new Atom($this->content);
|
|
|
|
}
|
2013-04-07 03:14:52 +02:00
|
|
|
else if (strpos($first_tag, '<rss') !== false &&
|
2013-04-02 03:31:54 +02:00
|
|
|
(strpos($first_tag, 'version="2.0"') !== false || strpos($first_tag, 'version=\'2.0\'') !== false)) {
|
2013-02-18 03:48:21 +01:00
|
|
|
|
2013-04-05 05:34:07 +02:00
|
|
|
require_once __DIR__.'/Parsers/Rss20.php';
|
2013-02-18 03:48:21 +01:00
|
|
|
return new Rss20($this->content);
|
2013-02-24 20:03:14 +01:00
|
|
|
}
|
2013-04-07 03:14:52 +02:00
|
|
|
else if (strpos($first_tag, '<rss') !== false &&
|
2013-04-02 03:31:54 +02:00
|
|
|
(strpos($first_tag, 'version="0.92"') !== false || strpos($first_tag, 'version=\'0.92\'') !== false)) {
|
2013-03-26 02:29:55 +01:00
|
|
|
|
2013-04-05 05:34:07 +02:00
|
|
|
require_once __DIR__.'/Parsers/Rss92.php';
|
2013-03-26 02:29:55 +01:00
|
|
|
return new Rss92($this->content);
|
|
|
|
}
|
2013-04-07 03:14:52 +02:00
|
|
|
else if (strpos($first_tag, '<rss') !== false &&
|
2013-04-02 03:31:54 +02:00
|
|
|
(strpos($first_tag, 'version="0.91"') !== false || strpos($first_tag, 'version=\'0.91\'') !== false)) {
|
2013-03-26 02:29:55 +01:00
|
|
|
|
2013-04-05 05:34:07 +02:00
|
|
|
require_once __DIR__.'/Parsers/Rss91.php';
|
2013-03-26 02:29:55 +01:00
|
|
|
return new Rss91($this->content);
|
|
|
|
}
|
2013-03-20 05:19:12 +01:00
|
|
|
else if (strpos($first_tag, '<rdf:') !== false && strpos($first_tag, 'xmlns="http://purl.org/rss/1.0/"') !== false) {
|
|
|
|
|
2013-04-05 05:34:07 +02:00
|
|
|
require_once __DIR__.'/Parsers/Rss10.php';
|
2013-03-20 05:19:12 +01:00
|
|
|
return new Rss10($this->content);
|
|
|
|
}
|
2013-02-24 20:03:14 +01:00
|
|
|
else if ($discover === true) {
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
else if ($this->discover()) {
|
2013-02-18 03:48:21 +01:00
|
|
|
|
2013-02-24 20:03:14 +01:00
|
|
|
return $this->getParser(true);
|
|
|
|
}
|
2013-02-18 03:48:21 +01:00
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
public function discover()
|
|
|
|
{
|
2013-02-24 20:03:14 +01:00
|
|
|
if (! $this->content) {
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2013-02-18 03:48:21 +01:00
|
|
|
\libxml_use_internal_errors(true);
|
|
|
|
|
|
|
|
$dom = new \DOMDocument;
|
|
|
|
$dom->loadHTML($this->content);
|
|
|
|
|
|
|
|
$xpath = new \DOMXPath($dom);
|
|
|
|
|
|
|
|
$queries = array(
|
|
|
|
"//link[@type='application/atom+xml']",
|
|
|
|
"//link[@type='application/rss+xml']"
|
|
|
|
);
|
|
|
|
|
|
|
|
foreach ($queries as $query) {
|
|
|
|
|
|
|
|
$nodes = $xpath->query($query);
|
|
|
|
|
|
|
|
if ($nodes->length !== 0) {
|
|
|
|
|
|
|
|
$link = $nodes->item(0)->getAttribute('href');
|
|
|
|
|
|
|
|
// Relative links
|
|
|
|
if (strpos($link, 'http') !== 0) {
|
|
|
|
|
|
|
|
if ($link{0} === '/') $link = substr($link, 1);
|
|
|
|
if ($this->url{strlen($this->url) - 1} !== '/') $this->url .= '/';
|
|
|
|
|
|
|
|
$link = $this->url.$link;
|
|
|
|
}
|
|
|
|
|
|
|
|
$this->download($link);
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
}
|