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97 lines
3.1 KiB
97 lines
3.1 KiB
<?php
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namespace p3k\XRay\Formats;
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trait Mf2Feed {
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private static function parseAsHFeed($mf2, $http, $url) {
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$data = [
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'type' => 'feed',
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'items' => [],
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];
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// Given an mf2 data structure from a web page, assume it is a feed of entries
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// and return the XRay data structure for the feed.
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// Look for the first (BFS) h-feed if present, otherwise use the list of items.
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// Normalize this into a simpler mf2 structure, (h-feed -> h-* children)
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$feed = self::_findFirstOfType($mf2, 'h-feed');
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if(!$feed) {
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// There was no h-feed.
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// Check for a top-level h-card with children
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if(isset($mf2['items'][0]) && in_array('h-card', $mf2['items'][0]['type'])) {
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$feed = $mf2['items'][0];
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// If the h-card has children, use them, otherwise look for siblings
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if(!isset($feed['children'])) {
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$items = self::_findAllObjectsExcept($mf2, ['h-card']);
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$feed['children'] = $items;
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}
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} else {
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$children = self::_findAllObjectsExcept($mf2, ['h-card','h-feed']);
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$feed = [
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'type' => ['h-feed'],
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'properties' => [],
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'children' => $children
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];
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}
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}
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if(!isset($feed['children']))
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$feed['children'] = [];
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// Now that the feed has been normalized so all the items are under "children", we
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// can transform each entry into the XRay format, including finding the author, etc
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foreach($feed['children'] as $item) {
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$parsed = false;
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if(in_array('h-entry', $item['type']) || in_array('h-cite', $item['type'])) {
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$parsed = self::parseAsHEntry($mf2, $item, false, $url);
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}
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elseif(in_array('h-event', $item['type'])) {
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$parsed = self::parseAsHEvent($mf2, $item, false, $url);
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}
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elseif(in_array('h-review', $item['type'])) {
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$parsed = self::parseAsHReview($mf2, $item, false, $url);
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}
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elseif(in_array('h-recipe', $item['type'])) {
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$parsed = self::parseAsHRecipe($mf2, $item, false, $url);
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}
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elseif(in_array('h-product', $item['type'])) {
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$parsed = self::parseAsHProduct($mf2, $item, false, $url);
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}
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elseif(in_array('h-item', $item['type'])) {
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$parsed = self::parseAsHItem($mf2, $item, false, $url);
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}
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elseif(in_array('h-card', $item['type'])) {
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$parsed = self::parseAsHCard($item, false, $url);
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}
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if($parsed) {
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$data['items'][] = $parsed['data'];
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}
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}
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return [
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'data' => $data
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];
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}
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private static function _findFirstOfType($mf2, $type) {
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foreach($mf2['items'] as $item) {
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if(in_array($type, $item['type'])) {
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return $item;
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} else {
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if(isset($item['children'])) {
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$items = $item['children'];
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return self::_findFirstOfType(['items'=>$items], $type);
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}
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}
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}
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}
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private static function _findAllObjectsExcept($mf2, $types) {
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$items = [];
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foreach($mf2['items'] as $item) {
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if(count(array_intersect($item['type'], $types)) == 0) {
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$items[] = $item;
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}
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}
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return $items;
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}
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}
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