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86 lines
2.1 KiB
86 lines
2.1 KiB
<?php
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namespace feeds;
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use BarnabyWalters\Mf2;
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function parse_mf2(&$html, $base) {
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$parser = new \mf2\Parser($html, $base);
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return $parser->parse();
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}
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function get_rels(&$data) {
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if($data && array_key_exists('rels', $data)) {
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return $data['rels'];
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} else {
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return [];
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}
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}
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function get_alternates(&$data) {
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if($data && array_key_exists('alternates', $data)) {
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return $data['alternates'];
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} else {
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return [];
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}
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}
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// Compares name, summary and content values to determine if they are equal
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function content_is_equal($a, $b) {
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// remove html tags
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$a = strip_tags($a);
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$b = strip_tags($b);
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// remove encoded entities
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$a = preg_replace('/&#?[a-z0-9]{2,8};/i', '', $a);
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$b = preg_replace('/&#?[a-z0-9]{2,8};/i', '', $b);
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// remove all non-alphanumeric chars
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$a = preg_replace('/[^a-zA-Z0-9]/', '', strtolower($a));
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$b = preg_replace('/[^a-zA-Z0-9]/', '', strtolower($b));
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return $a == $b;
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}
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// Given a parsed microformat data structure, find the feed on the page.
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// This is meant to follow
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// * http://indiewebcamp.com/feed#How_To_Consume
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// * http://microformats.org/wiki/h-feed#Parsing
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// Returns an array:
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// [
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// 'properties' => [ list of mf2 properties of the h-feed ],
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// 'entries' => [ list of h-entry items of the feed ]
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// ]
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function find_feed_info(&$data) {
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// tantek.com : h-card => h-feed => h-entry
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// snarfed.org : h-feed => h-entry
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// aaronparecki.com : h-entry
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$properties = [];
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$entries = [];
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// Find the first h-feed
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$feeds = Mf2\findMicroformatsByType($data, 'h-feed');
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if(count($feeds)) {
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$feed = $feeds[0];
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$properties = $feed['properties'];
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$entries = Mf2\findMicroformatsByType($feed['children'], 'h-entry', false);
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return [
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'properties' => $properties,
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'entries' => $entries
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];
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} else {
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// This is an implied feed if there are h-entry posts found at the top level
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$entries = Mf2\findMicroformatsByType($data['items'], 'h-entry', false);
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if(count($entries)) {
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return [
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'properties' => [],
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'entries' => $entries
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];
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}
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}
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return false;
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}
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