118 lines
2.3 KiB
PHP
118 lines
2.3 KiB
PHP
<?php
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namespace PicoFeed;
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class Reader
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{
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private $url = '';
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private $content = '';
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public function __construct($content = '')
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{
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$this->content = $content;
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return $this;
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}
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public function download($url)
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{
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if (strpos($url, 'http') !== 0) {
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$url = 'http://'.$url;
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}
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$this->url = $url;
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$this->content = @file_get_contents($this->url);
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return $this;
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}
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public function getContent()
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{
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return $this->content;
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}
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public function getUrl()
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{
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return $this->url;
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}
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public function getParser()
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{
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$first_lines = substr($this->content, 0, 1024);
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if (stripos($first_lines, 'html') !== false) {
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if ($this->discover()) {
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$first_lines = substr($this->content, 0, 1024);
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}
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else {
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return false;
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}
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}
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if (strpos($first_lines, '<feed ') !== false) {
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return new Atom($this->content);
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}
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else if (strpos($first_lines, '<rss ') !== false && strpos($first_lines, 'version="2.0"') !== false) {
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return new Rss20($this->content);
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}/*
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else if (strpos($first_lines, '<rdf') !== false && strpos($first_lines, 'xmlns="http://purl.org/rss/1.0/"') !== false) {
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return new Rss10($this->content);
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}*/
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return false;
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}
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public function discover()
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{
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\libxml_use_internal_errors(true);
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$dom = new \DOMDocument;
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$dom->loadHTML($this->content);
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$xpath = new \DOMXPath($dom);
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$queries = array(
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"//link[@type='application/atom+xml']",
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"//link[@type='application/rss+xml']"
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);
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foreach ($queries as $query) {
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$nodes = $xpath->query($query);
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if ($nodes->length !== 0) {
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$link = $nodes->item(0)->getAttribute('href');
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// Relative links
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if (strpos($link, 'http') !== 0) {
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if ($link{0} === '/') $link = substr($link, 1);
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if ($this->url{strlen($this->url) - 1} !== '/') $this->url .= '/';
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$link = $this->url.$link;
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}
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$this->download($link);
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return true;
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}
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}
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return false;
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}
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}
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