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<?php
namespace RebelCode\Wpra\Core\Twig\Extensions;
use ArrayAccess;
use RebelCode\Wpra\Core\Data\DataSetInterface;
use Twig\Extension\AbstractExtension;
use Twig\TwigFilter;
use Twig\TwigFunction;
use WPRSS_Help;
/**
* Twig extension for custom WP RSS Aggregator filters.
*
* @since 4.13
*/
class WpraExtension extends AbstractExtension
{
/**
* {@inheritdoc}
*
* @since 4.13
*/
public function getFilters()
{
return [
$this->getBase64EncodeFilter(),
$this->getWpraLinkFilter(),
$this->getWordsLimitFilter(),
$this->getCloseTagsFilter(),
];
}
/**
* @inheritdoc
*
* @since 4.14
*/
public function getFunctions()
{
return [
$this->getWpraFunction(),
$this->getWpFilterFunction(),
$this->getWpraLinkAttrsFunction(),
$this->getWpNonceFieldFunction(),
$this->getWpraTooltipFunction(),
$this->getHtmlEntitiesDecodeFunction(),
$this->getWpraItemUrlFunction(),
$this->getWpraIsAudioFunction(),
];
}
/**
* Retrieves the wpra twig function.
*
* @since 4.14
*
* @return TwigFunction
*/
protected function getWpraFunction()
{
return new TwigFunction('wpra', 'wpra_container');
}
/**
* Retrieves the wp_filter twig function.
*
* @since 4.18.2
*
* @return TwigFunction
*/
protected function getWpFilterFunction()
{
return new TwigFunction(
'wp_filter',
function ($name) {
return apply_filters('wpra/' . $name, '');
},
[
'is_safe' => ['html'],
]
);
}
/**
* Retrieves the wp_nonce_field twig function.
*
* @since 4.14
*
* @return TwigFunction
*/
protected function getWpNonceFieldFunction()
{
return new TwigFunction('wp_nonce_field', 'wp_nonce_field', [
'is_safe' => ['html'],
]);
}
/**
* Retrieves the WPRA tooltip twig function.
*
* @since 4.14
*
* @return TwigFunction
*/
protected function getWpraTooltipFunction()
{
$options = [
'is_safe' => ['html'],
];
return new TwigFunction('wpra_tooltip', function ($id, $text = '') {
$help = WPRSS_Help::get_instance();
if ($help->has_tooltip($id)) {
return $help->do_tooltip($id);
}
return $help->tooltip($id, $text);
}, $options);
}
/**
* Retrieves the "wpra_item_url" Twig function.
*
* @since 4.14
*
* @return TwigFunction
*/
protected function getWpraItemUrlFunction()
{
$name = 'wpra_item_url';
$callback = function ($item, $options) {
if (!is_array($item) && !$item instanceof DataSetInterface && !$item instanceof ArrayAccess) {
return '';
}
if ($options['link_to_embed'] && !empty($item['embed_url'])) {
return $item['embed_url'];
}
return $item['url'];
};
$options = [];
return new TwigFunction($name, $callback, $options);
}
/**
* Retrieves the "wpralink" filter.
*
* @since 4.13
*
* @return TwigFilter The function instance.
*/
protected function getWpraLinkFilter()
{
$name = 'wpralink';
$callback = function ($text, $url, $flag, $options) {
if (!$flag) {
return $text;
}
return sprintf('<a %s>%s</a>', $this->prepareLinkAttrs($url, $options), $text);
};
$options = [
'is_safe' => ['html'],
];
return new TwigFilter($name, $callback, $options);
}
/**
* Retrieves the "wpra_link_attrs" Twig function.
*
* @since 4.14
*
* @return TwigFunction The function instance.
*/
protected function getWpraLinkAttrsFunction()
{
$name = 'wpra_link_attrs';
$options = [
'is_safe' => ['html'],
];
return new TwigFunction($name, function ($url, $options, $className = '') {
return ' ' . $this->prepareLinkAttrs($url, $options, $className);
}, $options);
}
/**
* Retrieves the "wpra_is_audio_url" Twig function.
*
* @since 4.18
*
* @return TwigFunction The function instance.
*/
protected function getWpraIsAudioFunction()
{
return new TwigFunction('wpra_is_audio_url', 'wpra_is_audio_file');
}
/**
* Retrieves the "wpra_word_limit" Twig filter.
*
* @since 4.14
*
* @return TwigFilter The function instance.
*/
protected function getWordsLimitFilter()
{
$name = 'wpra_word_limit';
$callback = function ($text, $wordsCount) {
return wprss_trim_words($text, $wordsCount);
};
$options = [
'is_safe' => ['html'],
];
return new TwigFilter($name, $callback, $options);
}
/**
* Retrieves the "html_decode" Twig function.
*
* @since 4.14
*
* @return TwigFunction The function instance.
*/
protected function getHtmlEntitiesDecodeFunction()
{
$name = 'html_decode';
return new TwigFunction($name, function ($text) {
return strip_tags(html_entity_decode($text));
});
}
/**
* Retrieves the "base64_encode" filter.
*
* @since 4.14
*
* @return TwigFilter The filter instance.
*/
public function getBase64EncodeFilter()
{
$name = 'base64_encode';
$callback = function ($input) {
return base64_encode($input);
};
return new TwigFilter($name, $callback);
}
/**
* Prepares an HTML link element's attributes, based on the WPRA template options for links.
*
* @since 4.14
*
* @param string $url The link URL.
* @param array $options The template options.
* @param string $className The HTML class(es) to add.
*
* @return string The attributes as a string.
*/
public function prepareLinkAttrs($url, $options, $className = '')
{
$openBehavior = isset($options['links_open_behavior'])
? $options['links_open_behavior']
: '';
$relNoFollow = isset($options['links_rel_nofollow'])
? $options['links_rel_nofollow']
: '';
$hrefAttr = sprintf('href="%s"', esc_attr($url));
$relAttr = ($relNoFollow == 'no_follow')
? 'rel="nofollow"'
: '';
$targetAttr = ($openBehavior === 'blank')
? 'target="_blank"'
: '';
if ($openBehavior === 'lightbox') {
$className = trim($className . ' colorbox');
}
return sprintf('%s %s %s class="%s"', $hrefAttr, $targetAttr, $relAttr, $className);
}
/**
* Retrieves the "close_tags" Twig filter.
*
* @since 4.14
*
* @return TwigFilter
*/
public function getCloseTagsFilter()
{
$name = 'close_tags';
$callback = function ($input) {
return preg_replace_callback('#<\s*(img|br|hr)\s*([^>]+\s*)>#', function ($matches) {
return sprintf('<%s %s/>', $matches[1], $matches[2]);
}, $input);
};
return new TwigFilter($name, $callback, [
'is_safe' => ['html'],
]);
}
}