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878 lines
30 KiB
878 lines
30 KiB
<?php
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namespace p3k\XRay\Formats;
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use HTMLPurifier, HTMLPurifier_Config;
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class Mf2 extends Format {
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use Mf2Feed;
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public static function matches_host($url) {
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return true;
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}
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public static function matches($url) {
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return true;
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}
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public static function parse($mf2, $url, $http, $opts=[]) {
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if(!isset($mf2['items']) || count($mf2['items']) == 0)
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return false;
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// If they are expecting a feed, always return a feed or an error
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if(isset($opts['expect']) && $opts['expect'] == 'feed') {
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return self::parseAsHFeed($mf2, $http, $url);
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}
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// If there is only one item on the page, just use that
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if(count($mf2['items']) == 1) {
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$item = $mf2['items'][0];
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if(in_array('h-entry', $item['type']) || in_array('h-cite', $item['type'])) {
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#Parse::debug("mf2:0: Recognized $url as an h-entry it is the only item on the page");
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return self::parseAsHEntry($mf2, $item, $http, $url);
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}
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if(in_array('h-event', $item['type'])) {
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#Parse::debug("mf2:0: Recognized $url as an h-event it is the only item on the page");
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return self::parseAsHEvent($mf2, $item, $http, $url);
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}
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if(in_array('h-review', $item['type'])) {
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#Parse::debug("mf2:0: Recognized $url as an h-review it is the only item on the page");
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return self::parseAsHReview($mf2, $item, $http, $url);
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}
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if(in_array('h-recipe', $item['type'])) {
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#Parse::debug("mf2:0: Recognized $url as an h-recipe it is the only item on the page");
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return self::parseAsHRecipe($mf2, $item, $http, $url);
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}
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if(in_array('h-product', $item['type'])) {
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#Parse::debug("mf2:0: Recognized $url as an h-product it is the only item on the page");
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return self::parseAsHProduct($mf2, $item, $http, $url);
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}
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if(in_array('h-item', $item['type'])) {
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#Parse::debug("mf2:0: Recognized $url as an h-product it is the only item on the page");
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return self::parseAsHItem($mf2, $item, $http, $url);
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}
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if(in_array('h-card', $item['type'])) {
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#Parse::debug("mf2:0: Recognized $url as an h-card it is the only item on the page");
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return self::parseAsHCard($item, $http, $url, $url);
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}
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if(in_array('h-app', $item['type']) || in_array('h-x-app', $item['type'])) {
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#Parse::debug("mf2:0: Recognized $url as an h-feed because it is the only item on the page");
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return self::parseAsHApp($mf2, $item, $http, $url);
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}
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if(in_array('h-feed', $item['type'])) {
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#Parse::debug("mf2:0: Recognized $url as an h-feed because it is the only item on the page");
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return self::parseAsHFeed($mf2, $http, $url);
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}
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}
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// Check the list of items on the page to see if one matches the URL of the page,
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// and treat as a permalink for that object if so.
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foreach($mf2['items'] as $item) {
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if(array_key_exists('url', $item['properties'])) {
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$urls = $item['properties']['url'];
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$urls = array_map('\p3k\XRay\normalize_url', $urls);
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if(in_array($url, $urls)) {
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#Parse::debug("mf2:1: Recognized $url as a permalink because an object on the page matched the URL of the request");
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if(in_array('h-card', $item['type'])) {
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return self::parseAsHCard($item, $http, $url, $url);
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} elseif(in_array('h-entry', $item['type']) || in_array('h-cite', $item['type'])) {
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return self::parseAsHEntry($mf2, $item, $http, $url);
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} elseif(in_array('h-event', $item['type'])) {
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return self::parseAsHEvent($mf2, $item, $http, $url);
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} elseif(in_array('h-review', $item['type'])) {
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return self::parseAsHReview($mf2, $item, $http, $url);
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} elseif(in_array('h-recipe', $item['type'])) {
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return self::parseAsHRecipe($mf2, $item, $http, $url);
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} elseif(in_array('h-product', $item['type'])) {
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return self::parseAsHProduct($mf2, $item, $http, $url);
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} elseif(in_array('h-item', $item['type'])) {
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return self::parseAsHItem($mf2, $item, $http, $url);
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} elseif(in_array('h-app', $item['type']) || in_array('h-x-app', $item['type'])) {
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return self::parseAsHApp($mf2, $item, $http, $url);
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} elseif(in_array('h-feed', $item['type'])) {
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return self::parseAsHFeed($mf2, $http, $url);
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} else {
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#Parse::debug('This object was not a recognized type.');
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return false;
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}
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}
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}
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}
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// Check for an h-card matching rel=author or the author URL of any h-* on the page,
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// and return the h-* object if so
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if(isset($mf2['rels']['author'])) {
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foreach($mf2['items'] as $card) {
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if(in_array('h-card', $card['type']) && array_key_exists('url', $card['properties'])) {
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$urls = \p3k\XRay\normalize_urls($card['properties']['url']);
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if(count(array_intersect($urls, \p3k\XRay\normalize_urls($mf2['rels']['author']))) > 0) {
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// There is an author h-card on this page
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// Now look for the first h-* object other than an h-card and use that as the object
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foreach($mf2['items'] as $item) {
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if(!in_array('h-card', $item['type'])) {
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if(in_array('h-entry', $item['type']) || in_array('h-cite', $item['type'])) {
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return self::parseAsHEntry($mf2, $item, $http, $url);
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} elseif(in_array('h-event', $item['type'])) {
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return self::parseAsHEvent($mf2, $item, $http, $url);
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} elseif(in_array('h-review', $item['type'])) {
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return self::parseAsHReview($mf2, $item, $http, $url);
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} elseif(in_array('h-recipe', $item['type'])) {
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return self::parseAsHRecipe($mf2, $item, $http, $url);
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} elseif(in_array('h-product', $item['type'])) {
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return self::parseAsHProduct($mf2, $item, $http, $url);
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} elseif(in_array('h-item', $item['type'])) {
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return self::parseAsHItem($mf2, $item, $http, $url);
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} elseif(in_array('h-app', $item['type']) || in_array('h-x-app', $item['type'])) {
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return self::parseAsHApp($mf2, $item, $http, $url);
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}
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}
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}
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}
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}
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}
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}
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// If there was more than one h-entry on the page, treat the whole page as a feed
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if(count($mf2['items']) > 1) {
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if(count(array_filter($mf2['items'], function($item){
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return in_array('h-entry', $item['type']);
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})) > 1) {
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#Parse::debug("mf2:2: Recognized $url as an h-feed because there are more than one object on the page");
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return self::parseAsHFeed($mf2, $http, $url);
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}
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}
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// If the first item is an h-feed, parse as a feed
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$first = $mf2['items'][0];
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if(in_array('h-feed', $first['type'])) {
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#Parse::debug("mf2:3: Recognized $url as an h-feed because the first item is an h-feed");
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return self::parseAsHFeed($mf2, $http, $url);
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}
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// Fallback case, but hopefully we have found something before this point
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foreach($mf2['items'] as $item) {
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// Otherwise check for a recognized h-* object
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if(in_array('h-entry', $item['type']) || in_array('h-cite', $item['type'])) {
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#Parse::debug("mf2:6: $url is falling back to the first h-entry on the page");
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return self::parseAsHEntry($mf2, $item, $http, $url);
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} elseif(in_array('h-event', $item['type'])) {
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#Parse::debug("mf2:6: $url is falling back to the first h-event on the page");
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return self::parseAsHEvent($mf2, $item, $http, $url);
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} elseif(in_array('h-review', $item['type'])) {
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#Parse::debug("mf2:6: $url is falling back to the first h-review on the page");
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return self::parseAsHReview($mf2, $item, $http, $url);
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} elseif(in_array('h-recipe', $item['type'])) {
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#Parse::debug("mf2:6: $url is falling back to the first h-recipe on the page");
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return self::parseAsHRecipe($mf2, $item, $http, $url);
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} elseif(in_array('h-product', $item['type'])) {
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#Parse::debug("mf2:6: $url is falling back to the first h-product on the page");
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return self::parseAsHProduct($mf2, $item, $http, $url);
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} elseif(in_array('h-item', $item['type'])) {
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#Parse::debug("mf2:6: $url is falling back to the first h-item on the page");
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return self::parseAsHItem($mf2, $item, $http, $url);
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} elseif(in_array('h-app', $item['type']) || in_array('h-x-app', $item['type'])) {
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#Parse::debug("mf2:6: $url is falling back to the first h-item on the page");
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return self::parseAsHApp($mf2, $item, $http, $url);
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}
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}
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#Parse::debug("mf2:E: No object at $url was recognized");
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return false;
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}
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private static function collectSingleValues($properties, $urlProperties, $item, $url, &$data) {
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foreach($properties as $p) {
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if(($v = self::getPlaintext($item, $p)) !== null) {
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$data[$p] = $v;
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}
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}
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foreach($urlProperties as $p) {
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if($p == 'url') {
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// Special handling for the 'url' property to prioritize finding the URL on the same domain
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if($values = self::getPlaintextValues($item, 'url')) {
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if(count($values) == 1) {
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if(self::isURL($values[0]))
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$data['url'] = $values[0];
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}
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else {
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$set = false;
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foreach($values as $v) {
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if(self::isURL($v) && parse_url($v, PHP_URL_HOST) == parse_url($url, PHP_URL_HOST)) {
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$set = true;
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$data['url'] = $v;
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}
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}
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if(!$set) {
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// Fall back to the first URL if there isn't one on the domain
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if(self::isURL($values[0]))
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$data['url'] = $values[0];
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}
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}
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}
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} else {
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if(($v = self::getPlaintext($item, $p)) !== null) {
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if(self::isURL($v))
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$data[$p] = $v;
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}
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}
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}
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}
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private static function parseHTMLValue($property, $item) {
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if(!array_key_exists($property, $item['properties']))
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return null;
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$textContent = false;
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$htmlContent = false;
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$content = $item['properties'][$property][0];
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if(is_string($content)) {
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$textContent = $content;
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} elseif(!is_string($content) && is_array($content) && array_key_exists('html', $content)) {
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if(array_key_exists('html', $content)) {
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// Only allow images in the content if there is no photo property set
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if(isset($item['properties']['photo']))
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$allowImg = false;
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else
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$allowImg = true;
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$htmlContent = trim(self::sanitizeHTML($content['html'], $allowImg));
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#$textContent = trim(str_replace("
","\r",$content['value']));
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$textContent = trim(self::stripHTML($htmlContent));
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} else {
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if(isset($content['value']))
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$textContent = trim($content['value']);
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}
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}
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if($textContent || $htmlContent) {
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$data = [
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'text' => $textContent
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];
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// Only add HTML content if there is actual content.
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// If the text content ends up empty, then the HTML should be too
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// e.g. <div class="e-content"><a href=""><img src="" class="u-photo"></a></div>
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// should not return content of <a href=""></a>
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// TODO: still need to remove empty <a> tags when there is other text in the content
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if($htmlContent && $textContent && $textContent != $htmlContent) {
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$data['html'] = $htmlContent;
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}
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if(!$data['text'])
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return null;
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return $data;
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} else {
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return null;
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}
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}
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// Always return arrays, and may contain plaintext content
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// Nested objects are added to refs and the URL is used as the value if present
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private static function collectArrayValues($properties, $item, &$data, &$refs, &$http) {
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foreach($properties as $p) {
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if(array_key_exists($p, $item['properties'])) {
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foreach($item['properties'][$p] as $v) {
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if(is_string($v)) {
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if(!array_key_exists($p, $data)) $data[$p] = [];
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if(!in_array($v, $data[$p]))
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$data[$p][] = $v;
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} elseif(self::isMicroformat($v)) {
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if(($u=self::getPlaintext($v, 'url')) && self::isURL($u)) {
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if(!array_key_exists($p, $data)) $data[$p] = [];
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if(!in_array($u, $data[$p]))
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$data[$p][] = $u;
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$ref = self::parse(['items'=>[$v]], $u, $http);
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if($ref) {
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$refs[$u] = $ref['data'];
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}
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} else {
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if(!array_key_exists($p, $data)) $data[$p] = [];
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if(!in_array($v['value'], $data[$p]))
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$data[$p][] = $v['value'];
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}
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}
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}
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}
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}
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}
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private static function parseEmbeddedHCard($property, $item, &$http) {
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if(array_key_exists($property, $item['properties'])) {
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$mf2 = $item['properties'][$property][0];
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if(is_string($mf2) && self::isURL($mf2)) {
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$hcard = [
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'type' => 'card',
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'url' => $mf2
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];
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return $hcard;
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} if(self::isMicroformat($mf2) && in_array('h-card', $mf2['type'])) {
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$hcard = [
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'type' => 'card',
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];
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$properties = ['name','latitude','longitude','locality','region','country','url'];
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foreach($properties as $p) {
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if($v=self::getPlaintext($mf2, $p)) {
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$hcard[$p] = $v;
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}
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}
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return $hcard;
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}
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}
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return false;
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}
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private static function collectArrayURLValues($properties, $item, &$data, &$refs, &$http) {
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$keys = [];
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foreach($properties as $p) {
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if(array_key_exists($p, $item['properties'])) {
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foreach($item['properties'][$p] as $v) {
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if(is_string($v) && self::isURL($v)) {
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if(!array_key_exists($p, $data)) $data[$p] = [];
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$data[$p][] = $v;
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$keys[] = $p;
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}
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elseif(self::isMicroformat($v) && ($u=self::getPlaintext($v, 'url')) && self::isURL($u)) {
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if(!array_key_exists($p, $data)) $data[$p] = [];
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$data[$p][] = $u;
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$keys[] = $p;
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// parse the object and put the result in the "refs" object
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$ref = self::parse(['items'=>[$v]], $u, $http);
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if($ref) {
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$refs[$u] = $ref['data'];
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}
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}
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}
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}
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}
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// Remove duplicate values
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foreach(array_unique($keys) as $key) {
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$data[$key] = array_unique($data[$key]);
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}
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}
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private static function determineNameAndContent($item, &$data) {
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// Determine if the name is distinct from the content
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$name = self::getPlaintext($item, 'name');
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$textContent = null;
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$htmlContent = null;
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$content = self::getHTMLValue($item, 'content');
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if(is_string($content)) {
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$textContent = $content;
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} elseif($content) {
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$htmlContent = array_key_exists('html', $content) ? $content['html'] : null;
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$textContent = array_key_exists('value', $content) ? $content['value'] : null;
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}
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$checkedname = $name;
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if($content) {
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// Trim ellipses from the name
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$name = preg_replace('/ ?(\.\.\.|…)$/', '', $name);
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// Remove all whitespace when checking equality
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$nameCompare = preg_replace('/\s/','',trim($name));
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$contentCompare = preg_replace('/\s/','',trim($textContent));
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// Check if the name is a prefix of the content
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if($contentCompare && $nameCompare && strpos($contentCompare, $nameCompare) === 0) {
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$checkedname = null;
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}
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}
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if($checkedname) {
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$data['name'] = $checkedname;
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}
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// If there is content, always return the plaintext content, and return HTML content if it's different
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if($content) {
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$content = self::parseHTMLValue('content', $item);
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if($content['text']) {
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$data['content']['text'] = $content['text'];
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if(isset($content['html']))
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$data['content']['html'] = $content['html'];
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} else {
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// If the content text was blank because the img was removed and that was the only content,
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// then put the name back as the name if it was previously set.
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// See https://github.com/aaronpk/XRay/issues/57
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if($name) {
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$data['name'] = $name;
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}
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}
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}
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}
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private static function parseAsHEntry($mf2, $item, $http, $url) {
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$data = [
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'type' => 'entry'
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];
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$refs = [];
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// Single plaintext and URL values
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self::collectSingleValues(['published','summary','rsvp','swarm-coins'], ['url','featured'], $item, $url, $data);
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if(isset($data['rsvp']))
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$data['rsvp'] = strtolower($data['rsvp']);
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// These properties are always returned as arrays and may contain plaintext content
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// First strip leading hashtags from category values if present
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if(array_key_exists('category', $item['properties'])) {
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foreach($item['properties']['category'] as $i=>$c) {
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if(is_string($c))
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$item['properties']['category'][$i] = ltrim($c, '#');
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}
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}
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self::collectArrayValues(['category','invitee'], $item, $data, $refs, $http);
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// These properties are always returned as arrays and always URLs
|
|
// If the value is an h-* object with a URL, the URL is used and a "ref" is added as well
|
|
self::collectArrayURLValues(['photo','video','audio','syndication','in-reply-to','like-of','repost-of','bookmark-of','quotation-of'], $item, $data, $refs, $http);
|
|
|
|
// Hack to make quotation-of a single value
|
|
if(isset($data['quotation-of']))
|
|
$data['quotation-of'] = $data['quotation-of'][0];
|
|
|
|
self::determineNameAndContent($item, $data);
|
|
|
|
if($author = self::findAuthor($mf2, $item, $http, $url))
|
|
$data['author'] = $author;
|
|
|
|
if($checkin = self::parseEmbeddedHCard('checkin', $item, $http))
|
|
$data['checkin'] = $checkin;
|
|
|
|
$data['post-type'] = \p3k\XRay\PostType::discover($data);
|
|
|
|
$response = [
|
|
'data' => $data,
|
|
];
|
|
|
|
if(count($refs)) {
|
|
$response['data']['refs'] = $refs;
|
|
}
|
|
|
|
return $response;
|
|
}
|
|
|
|
private static function parseAsHReview($mf2, $item, $http, $url) {
|
|
$data = [
|
|
'type' => 'review'
|
|
];
|
|
$refs = [];
|
|
|
|
self::collectSingleValues(['summary','published','rating','best','worst'], ['url'], $item, $url, $data);
|
|
|
|
// Fallback for Mf1 "description" as content. The PHP parser does not properly map this to "content"
|
|
$description = self::parseHTMLValue('description', $item);
|
|
if($description) {
|
|
$data['content'] = $description;
|
|
}
|
|
|
|
self::collectArrayValues(['category'], $item, $data, $refs, $http);
|
|
|
|
self::collectArrayURLValues(['item'], $item, $data, $refs, $http);
|
|
|
|
self::determineNameAndContent($item, $data);
|
|
|
|
if($author = self::findAuthor($mf2, $item, $http, $url))
|
|
$data['author'] = $author;
|
|
|
|
$data['post-type'] = \p3k\XRay\PostType::discover($data);
|
|
|
|
$response = [
|
|
'data' => $data
|
|
];
|
|
|
|
if(count($refs)) {
|
|
$response['data']['refs'] = $refs;
|
|
}
|
|
|
|
return $response;
|
|
}
|
|
|
|
private static function parseAsHRecipe($mf2, $item, $http, $url) {
|
|
$data = [
|
|
'type' => 'recipe',
|
|
];
|
|
$refs = [];
|
|
|
|
self::collectSingleValues(['name','summary','published','duration','yield','nutrition'], ['url'], $item, $url, $data);
|
|
|
|
$instructions = self::parseHTMLValue('instructions', $item);
|
|
if($instructions) {
|
|
$data['instructions'] = $instructions;
|
|
}
|
|
|
|
self::collectArrayValues(['category','ingredient'], $item, $data, $refs, $http);
|
|
|
|
self::collectArrayURLValues(['photo'], $item, $data, $refs, $http);
|
|
|
|
if($author = self::findAuthor($mf2, $item, $http, $url))
|
|
$data['author'] = $author;
|
|
|
|
$data['post-type'] = \p3k\XRay\PostType::discover($data);
|
|
|
|
$response = [
|
|
'data' => $data
|
|
];
|
|
|
|
if(count($refs)) {
|
|
$response['data']['refs'] = $refs;
|
|
}
|
|
|
|
return $response;
|
|
}
|
|
|
|
private static function parseAsHProduct($mf2, $item, $http, $url) {
|
|
$data = [
|
|
'type' => 'product'
|
|
];
|
|
$refs = [];
|
|
|
|
self::collectSingleValues(['name','identifier','price'], ['url'], $item, $url, $data);
|
|
|
|
$description = self::parseHTMLValue('description', $item);
|
|
if($description) {
|
|
$data['description'] = $description;
|
|
}
|
|
|
|
self::collectArrayValues(['category','brand'], $item, $data, $refs, $http);
|
|
|
|
self::collectArrayURLValues(['photo','video','audio'], $item, $data, $refs, $http);
|
|
|
|
$response = [
|
|
'data' => $data
|
|
];
|
|
|
|
if(count($refs)) {
|
|
$response['data']['refs'] = $refs;
|
|
}
|
|
|
|
return $response;
|
|
}
|
|
|
|
private static function parseAsHItem($mf2, $item, $http, $url) {
|
|
$data = [
|
|
'type' => 'item'
|
|
];
|
|
$refs = [];
|
|
|
|
self::collectSingleValues(['name'], ['url'], $item, $url, $data);
|
|
|
|
self::collectArrayURLValues(['photo','video','audio'], $item, $data, $refs, $http);
|
|
|
|
$response = [
|
|
'data' => $data
|
|
];
|
|
|
|
if(count($refs)) {
|
|
$response['data']['refs'] = $refs;
|
|
}
|
|
|
|
return $response;
|
|
}
|
|
|
|
private static function parseAsHApp($mf2, $item, $http, $url) {
|
|
$data = [
|
|
'type' => 'app'
|
|
];
|
|
|
|
self::collectSingleValues(['name'], ['url','logo'], $item, $url, $data);
|
|
self::collectArrayURLValues(['redirect-uri'], $item, $data, $refs, $http);
|
|
|
|
if(!isset($data['url']))
|
|
$data['url'] = $url;
|
|
|
|
if(isset($mf2['rels']['redirect_uri'])) {
|
|
if(!isset($data['redirect-uri'])) $data['redirect-uri'] = [];
|
|
$data['redirect-uri'] = array_merge($data['redirect-uri'], $mf2['rels']['redirect_uri']);
|
|
}
|
|
|
|
if(isset($data['redirect-uri'])) {
|
|
$data['redirect-uri'] = array_values(array_unique($data['redirect-uri']));
|
|
}
|
|
|
|
$response = [
|
|
'data' => $data
|
|
];
|
|
|
|
return $response;
|
|
}
|
|
|
|
private static function parseAsHEvent($mf2, $item, $http, $url) {
|
|
$data = [
|
|
'type' => 'event'
|
|
];
|
|
$refs = [];
|
|
|
|
// Single plaintext and URL values
|
|
self::collectSingleValues(['name','summary','published','start','end','duration'], ['url'], $item, $url, $data);
|
|
|
|
// These properties are always returned as arrays and may contain plaintext content
|
|
self::collectArrayValues(['category','location','attendee'], $item, $data, $refs, $http);
|
|
|
|
// These properties are always returned as arrays and always URLs
|
|
// If the value is an h-* object with a URL, the URL is used and a "ref" is added as well
|
|
self::collectArrayURLValues(['photo','video','audio','syndication'], $item, $data, $refs, $http);
|
|
|
|
// If there is a description, always return the plaintext description, and return HTML description if it's different
|
|
$description = self::parseHTMLValue('description', $item);
|
|
if($description) {
|
|
$data['description'] = $description;
|
|
}
|
|
|
|
$data['post-type'] = \p3k\XRay\PostType::discover($data);
|
|
|
|
$response = [
|
|
'data' => $data
|
|
];
|
|
|
|
if(count($refs)) {
|
|
$response['data']['refs'] = $refs;
|
|
}
|
|
|
|
return $response;
|
|
}
|
|
|
|
private static function parseAsHCard($item, $http, $url, $authorURL=false) {
|
|
$data = [
|
|
'type' => 'card',
|
|
'name' => null,
|
|
'url' => null,
|
|
'photo' => null
|
|
];
|
|
|
|
$properties = ['url','name','photo'];
|
|
foreach($properties as $p) {
|
|
if($p == 'url' && $authorURL) {
|
|
// If there is a matching author URL, use that one
|
|
$found = false;
|
|
foreach($item['properties']['url'] as $url) {
|
|
if(self::isURL($url)) {
|
|
$url = \p3k\XRay\normalize_url($url);
|
|
if($url == \p3k\XRay\normalize_url($authorURL)) {
|
|
$data['url'] = $url;
|
|
$found = true;
|
|
}
|
|
}
|
|
}
|
|
if(!$found && self::isURL($item['properties']['url'][0])) {
|
|
$data['url'] = $item['properties']['url'][0];
|
|
}
|
|
} else if(($v = self::getPlaintext($item, $p)) !== null) {
|
|
// Make sure the URL property is actually a URL
|
|
if($p == 'url' || $p == 'photo') {
|
|
if(self::isURL($v))
|
|
$data[$p] = $v;
|
|
} else {
|
|
$data[$p] = $v;
|
|
}
|
|
}
|
|
}
|
|
|
|
// If no URL property was found, use the $authorURL provided
|
|
if(!$data['url'])
|
|
$data['url'] = $authorURL;
|
|
|
|
$response = [
|
|
'data' => $data
|
|
];
|
|
|
|
return $response;
|
|
}
|
|
|
|
private static function findAuthor($mf2, $item, $http, $url) {
|
|
$author = [
|
|
'type' => 'card',
|
|
'name' => null,
|
|
'url' => null,
|
|
'photo' => null
|
|
];
|
|
|
|
// Author Discovery
|
|
// http://indiewebcamp.com/authorship
|
|
|
|
$authorPage = false;
|
|
if(array_key_exists('author', $item['properties'])) {
|
|
|
|
// Check if any of the values of the author property are an h-card
|
|
foreach($item['properties']['author'] as $a) {
|
|
if(self::isHCard($a)) {
|
|
// 5.1 "if it has an h-card, use it, exit."
|
|
return self::parseAsHCard($a, $http, $url)['data'];
|
|
} elseif(is_string($a)) {
|
|
if(self::isURL($a)) {
|
|
// 5.2 "otherwise if author property is an http(s) URL, let the author-page have that URL"
|
|
$authorPage = $a;
|
|
} else {
|
|
// 5.3 "otherwise use the author property as the author name, exit"
|
|
// We can only set the name, no h-card or URL was found
|
|
$author['name'] = self::getPlaintext($item, 'author');
|
|
return $author;
|
|
}
|
|
} else {
|
|
// This case is only hit when the author property is an mf2 object that is not an h-card
|
|
$author['name'] = self::getPlaintext($item, 'author');
|
|
return $author;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
// 6. "if no author page was found" ... check for rel-author link
|
|
if(!$authorPage) {
|
|
if(isset($mf2['rels']) && isset($mf2['rels']['author']))
|
|
$authorPage = $mf2['rels']['author'][0];
|
|
}
|
|
|
|
// 7. "if there is an author-page URL" ...
|
|
if($authorPage) {
|
|
|
|
// 7.1 "get the author-page from that URL and parse it for microformats2"
|
|
$authorPageContents = self::getURL($authorPage, $http);
|
|
|
|
if($authorPageContents) {
|
|
foreach($authorPageContents['items'] as $i) {
|
|
if(self::isHCard($i)) {
|
|
|
|
// 7.2 "if author-page has 1+ h-card with url == uid == author-page's URL, then use first such h-card, exit."
|
|
if(array_key_exists('url', $i['properties'])
|
|
and in_array(\p3k\XRay\normalize_url($authorPage), \p3k\XRay\normalize_urls($i['properties']['url']))
|
|
and array_key_exists('uid', $i['properties'])
|
|
and in_array(\p3k\XRay\normalize_url($authorPage), \p3k\XRay\normalize_urls($i['properties']['uid']))
|
|
) {
|
|
return self::parseAsHCard($i, $http, $url, $authorPage)['data'];
|
|
}
|
|
|
|
// 7.3 "else if author-page has 1+ h-card with url property which matches the href of a rel-me link on the author-page"
|
|
$relMeLinks = (isset($authorPageContents['rels']) && isset($authorPageContents['rels']['me'])) ? $authorPageContents['rels']['me'] : [];
|
|
if(count($relMeLinks) > 0
|
|
and array_key_exists('url', $i['properties'])
|
|
and count(array_intersect(\p3k\XRay\normalize_urls($i['properties']['url']), \p3k\XRay\normalize_urls($relMeLinks))) > 0
|
|
) {
|
|
return self::parseAsHCard($i, $http, $url, $authorPage)['data'];
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
// 7.4 "if the h-entry's page has 1+ h-card with url == author-page URL, use first such h-card, exit."
|
|
foreach($mf2['items'] as $i) {
|
|
if(self::isHCard($i)) {
|
|
|
|
if(array_key_exists('url', $i['properties'])
|
|
and in_array(\p3k\XRay\normalize_url($authorPage), \p3k\XRay\normalize_urls($i['properties']['url']))
|
|
) {
|
|
return self::parseAsHCard($i, $http, $url)['data'];
|
|
}
|
|
|
|
}
|
|
// Also check the "author" property
|
|
// (for finding the author of an h-feed's children when the author is the p-author property of the h-feed)
|
|
if(isset($i['properties']['author'])) {
|
|
foreach($i['properties']['author'] as $ic) {
|
|
if(self::isHCard($ic)) {
|
|
|
|
if(array_key_exists('url', $ic['properties'])
|
|
and in_array(\p3k\XRay\normalize_url($authorPage), \p3k\XRay\normalize_urls($ic['properties']['url']))
|
|
) {
|
|
return self::parseAsHCard($ic, $http, $url)['data'];
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
if(!$author['name'] && !$author['photo'] && !$author['url'])
|
|
return null;
|
|
|
|
return $author;
|
|
}
|
|
|
|
private static function hasNumericKeys(array $arr) {
|
|
foreach($arr as $key=>$val)
|
|
if (is_numeric($key))
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
private static function isMicroformat($mf) {
|
|
return is_array($mf)
|
|
and !self::hasNumericKeys($mf)
|
|
and !empty($mf['type'])
|
|
and isset($mf['properties']);
|
|
}
|
|
|
|
private static function isHCard($mf) {
|
|
return is_array($mf)
|
|
and !empty($mf['type'])
|
|
and is_array($mf['type'])
|
|
and in_array('h-card', $mf['type']);
|
|
}
|
|
|
|
private static function isURL($string) {
|
|
return preg_match('/^https?:\/\/.+\..+$/', $string);
|
|
}
|
|
|
|
// Given an array of microformats properties and a key name, return the plaintext value
|
|
// at that property
|
|
// e.g.
|
|
// {"properties":{"published":["foo"]}} results in "foo"
|
|
private static function getPlaintext($mf2, $k, $fallback=null) {
|
|
if(!empty($mf2['properties'][$k]) and is_array($mf2['properties'][$k])) {
|
|
// $mf2['properties'][$v] will always be an array since the input was from the mf2 parser
|
|
$value = $mf2['properties'][$k][0];
|
|
if(is_string($value)) {
|
|
return $value;
|
|
} elseif(self::isMicroformat($value) && array_key_exists('value', $value)) {
|
|
return $value['value'];
|
|
}
|
|
}
|
|
return $fallback;
|
|
}
|
|
|
|
private static function getHTMLValue($mf2, $k, $fallback=null) {
|
|
// Return an array with html and value if the value is html, otherwise return a string
|
|
if(!empty($mf2['properties'][$k]) and is_array($mf2['properties'][$k])) {
|
|
// $mf2['properties'][$v] will always be an array since the input was from the mf2 parser
|
|
$value = $mf2['properties'][$k][0];
|
|
if(is_string($value)) {
|
|
return $value;
|
|
} elseif(isset($value['html'])) {
|
|
return $value;
|
|
}
|
|
}
|
|
return $fallback;
|
|
}
|
|
|
|
private static function getPlaintextValues($mf2, $k, $values=[]) {
|
|
if(!empty($mf2['properties'][$k]) and is_array($mf2['properties'][$k])) {
|
|
foreach($mf2['properties'][$k] as $value) {
|
|
if(is_string($value)) {
|
|
$values[] = $value;
|
|
} elseif(self::isMicroformat($value) && array_key_exists('value', $value)) {
|
|
$values[] = $value['value'];
|
|
}
|
|
}
|
|
}
|
|
return $values;
|
|
}
|
|
|
|
private static function getURL($url, $http) {
|
|
if(!$url || !$http) return null;
|
|
// TODO: consider adding caching here
|
|
$result = $http->get($url);
|
|
if($result['error'] || !$result['body']) {
|
|
return null;
|
|
}
|
|
return \mf2\Parse($result['body'], $url);
|
|
}
|
|
}
|