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Merge 4269f3438a into a19b63e840
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BoySka
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commit
d374ca6f8a
280
bridges/FilterMoreBridge.php
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280
bridges/FilterMoreBridge.php
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<?php
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class FilterMoreBridge extends FeedExpander
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{
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const MAINTAINER = 'boyska';
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const NAME = 'FilterMore';
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const CACHE_TIMEOUT = 2;
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const DESCRIPTION = 'Filters a feed of your choice';
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const URI = 'https://git.lattuta.net/boyska/rss-bridge';
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const PARAMETERS = [
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[
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'url' => [
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'name' => 'Feed URL',
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'required' => true,
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'exampleValue' => 'https://example.com/feed/',
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],
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'conj_type' => [
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'name' => 'Conjunction type type',
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'type' => 'list',
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'required' => false,
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'values' => [
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'All conditions must be met' => 'and',
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'Any condition must be met' => 'or',
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],
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'defaultValue' => 'permit',
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],
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'title_re' => [
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'name' => 'Filter item title (regular expression, see php.net/pcre_match for details)',
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'required' => false,
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'exampleValue' => '/breaking\ news/i',
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],
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'body_re' => [
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'name' => 'Filter body (regular expression)',
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'required' => false,
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'exampleValue' => '/(technology|politics)/i',
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],
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'author_re' => [
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'name' => 'Filter author (regular expression)',
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'required' => false,
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'exampleValue' => '/(technology|politics)/i',
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],
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'newer_than' => [
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'name' => 'Filter date: ok if newer than the value (see php.net/strtotime for details)',
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'required' => false,
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'exampleValue' => '-14 days',
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],
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'older_than' => [
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'name' => 'Filter date: ok if older than the value (see php.net/strtotime for details)',
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'required' => false,
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'exampleValue' => '-1 hour',
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],
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'has_media' => [
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'name' => 'Has at least 1 media inside',
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'type' => 'checkbox',
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'required' => false,
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'defaultValue' => false,
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],
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'invert_filter' => [
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'name' => 'Invert filter result',
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'type' => 'checkbox',
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'required' => false,
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'defaultValue' => false,
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],
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'sort_by' => [
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'name' => 'Sort by',
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'type' => 'list',
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'required' => true,
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'values' => [
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"Don't sort" => 'none',
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'Date' => 'timestamp',
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'Title' => 'title',
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'Random' => 'random',
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],
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'defaultValue' => 'timestamp',
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],
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'sort_dir' => [
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'name' => 'Sort direction',
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'type' => 'list',
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'required' => true,
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'values' => [
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'Ascending' => 'asc',
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'Descending' => 'desc',
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],
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'defaultValue' => 'asc',
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],
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'limit' => self::LIMIT,
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]];
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public function collectData()
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{
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if ($this->getInput('url') && substr($this->getInput('url'), 0, strlen('http')) !== 'http') {
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// just in case someone find a way to access local files by playing with the url
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returnClientError('The url parameter must either refer to http or https protocol.');
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}
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try {
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$this->collectExpandableDatas($this->getURI());
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} catch (HttpException $e) {
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$this->collectExpandableDatas($this->getURI());
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}
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}
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protected function parseItem($item)
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{
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$item['enclosures'] = [];
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if (isset($newItem->enclosure)) {
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foreach ($newItem->enclosure as $encl) {
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$serialized = [];
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foreach ($encl->attributes() as $key => $value) {
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$serialized[$key] = (string)$value;
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}
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$serialized['length'] = intval($serialized['length']);
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$item['enclosures'][] = $serialized;
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}
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}
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if (isset($newItem->link)) {
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foreach ($newItem->link as $el) {
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if (((string)$el['rel']) !== 'enclosure') {
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continue;
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}
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$serialized = [];
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$serialized['url'] = (string)$el['href'];
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$item['enclosures'][] = $serialized;
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}
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}
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$filters = ['filterByTitle', 'filterByBody', 'filterByAuthor', 'filterByDateNewer', 'filterByDateOlder', 'filterByMedia'];
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$results = [];
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foreach ($filters as $filter) {
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$filter_res = $this->$filter($item);
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if ($filter_res === null) {
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continue;
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}
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$results[] = $filter_res;
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}
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$old_enclosures = $item['enclosures'];
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$item['enclosures'] = [];
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foreach ($old_enclosures as $e) {
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$item['enclosures'][] = $e['url'];
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}
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if (count($results) === 0) {
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return $item;
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}
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if ($this->getConjType() === 'and') {
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$result = !in_array(false, $results);
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} else { // or
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$result = in_array(true, $results);
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}
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if ($this->getInvertResult()) {
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$result = !$result;
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}
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if ($result) {
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return $item;
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} else {
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return null;
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}
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}
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public function collectExpandableDatas($url, $maxItems = -1)
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{
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parent::collectExpandableDatas($url, $maxItems);
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$limit = (int)($this->getInput('limit') ?: 10);
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if ($this->getInput('sort_by') === 'random') {
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shuffle($this->items);
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} elseif ($this->getInput('sort_by') !== 'none') {
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usort($this->items, function ($itemA, $itemB) {
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$valA = $this->sortItemKey($itemA);
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$valB = $this->sortItemKey($itemB);
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$cmp = strcmp($valA, $valB);
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return $cmp;
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});
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}
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if ($this->getInput('sort_dir') === 'desc') {
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$this->items = array_reverse($this->items);
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}
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if ($limit > 0) {
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$this->items = array_slice($this->items, 0, $limit);
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}
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}
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protected function sortItemKey($item)
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{
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$sort_by = $this->getInput('sort_by');
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$key = $item[$sort_by];
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return $key;
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}
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private function cmp($a, $b)
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{
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if ($a > $b) {
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return 1;
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} elseif ($a < $b) {
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return -1;
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}
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return 0;
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}
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private function filterByFieldRegexp($field, $re)
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{
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if ($re === '' || $re === null) {
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return null;
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} elseif (preg_match($re, $field)) {
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return true;
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}
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return false;
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}
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protected function filterByTitle($item)
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{
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$re = $this->getInput('title_re');
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return $this->filterByFieldRegexp($item['title'], $re);
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}
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protected function filterByBody($item)
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{
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$re = $this->getInput('body_re');
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return $this->filterByFieldRegexp($item['content'], $re);
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}
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protected function filterByAuthor($item)
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{
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$re = $this->getInput('author_re');
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return $this->filterByFieldRegexp($item['author'], $re);
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}
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private function filterByDate($item, $input, $expected)
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{
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$val = $this->getInput($input);
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if ($val === '' || $val === null) {
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return null;
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}
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$ts = strtotime($val);
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if ($ts === false) {
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throw new Exception('Invalid time specification: ' . $val);
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}
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$cmp = $this->cmp($item['timestamp'], $ts); // 1 if newer, -1 if older
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return $cmp === $expected;
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}
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protected function filterByDateNewer($item)
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{
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return $this->filterByDate($item, 'newer_than', 1);
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}
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protected function filterByDateOlder($item)
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{
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return $this->filterByDate($item, 'older_than', -1);
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}
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protected function filterByMedia($item)
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{
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if (!$this->getInput('has_media')) {
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return null;
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} elseif (count($item['enclosures']) > 0) {
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return true;
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}
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return false;
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}
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protected function getConjType()
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{
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return $this->getInput('conj_type');
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}
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protected function getInvertResult()
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{
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return $this->getInput('invert_filter');
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}
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public function getURI()
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{
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$url = $this->getInput('url');
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if (empty($url)) {
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$url = parent::getURI();
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}
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return $url;
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}
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}
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