77 lines
2.1 KiB
PHP
77 lines
2.1 KiB
PHP
<?php
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/**
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* Expands an existing feed
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*/
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abstract class FeedExpander extends BridgeAbstract
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{
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private array $feed;
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public function collectExpandableDatas(string $url, $maxItems = -1)
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{
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if (!$url) {
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throw new \Exception('There is no $url for this RSS expander');
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}
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$maxItems = (int) $maxItems;
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if ($maxItems === -1) {
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$maxItems = 999;
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}
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$accept = [MrssFormat::MIME_TYPE, AtomFormat::MIME_TYPE, '*/*'];
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$httpHeaders = ['Accept: ' . implode(', ', $accept)];
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$xmlString = getContents($url, $httpHeaders);
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if ($xmlString === '') {
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throw new \Exception(sprintf('Unable to parse xml from `%s` because we got the empty string', $url), 10);
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}
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// prepare/massage the xml to make it more acceptable
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$problematicStrings = [
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' ',
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'»',
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'’',
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];
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$xmlString = str_replace($problematicStrings, '', $xmlString);
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$feedParser = new FeedParser();
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try {
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$this->feed = $feedParser->parseFeed($xmlString);
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} catch (\Exception $e) {
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// FeedMergeBridge relies on this string
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throw new \Exception(sprintf('Failed to parse xml from %s: %s', $url, create_sane_exception_message($e)));
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}
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$items = array_slice($this->feed['items'], 0, $maxItems);
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// todo: extract parse logic out from FeedParser
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foreach ($items as $item) {
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// Give bridges a chance to modify the item
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$item = $this->parseItem($item);
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if ($item) {
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$this->items[] = $item;
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}
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}
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}
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/**
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* This method is overridden by bridges
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*
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* @return array
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*/
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protected function parseItem(array $item)
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{
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return $item;
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}
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public function getURI()
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{
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return $this->feed['uri'] ?? parent::getURI();
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}
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public function getName()
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{
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return $this->feed['title'] ?? parent::getName();
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}
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public function getIcon()
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{
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return $this->feed['icon'] ?? parent::getIcon();
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}
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}
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