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<?php |
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|
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class RabbitLoader_21_CDN |
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{ |
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|
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public $cdn_prefix = ''; |
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public $site_host = ''; |
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private $replaced_scripts = []; |
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private $excluded_handlers = ['amelia']; |
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private static $excluded_srs = [RabbitLoader_21_Public::skip_reason_ep, RabbitLoader_21_Public::skip_reason_us]; |
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|
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public static function init() |
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{ |
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if (!function_exists('is_admin') || is_admin() || RL21UtilWP::is_login_page()) { |
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return; |
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} |
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$sr = RabbitLoader_21_Public::getSkipReason(); |
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if (in_array($sr, self::$excluded_srs)) { |
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//excluded pages or RL origin pages |
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return; |
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} |
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|
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$cdn_prefix = get_option('rabbitloader_cdn_prefix'); |
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if (empty($cdn_prefix)) { |
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return; |
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} |
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|
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$cdn = new RabbitLoader_21_CDN(); |
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$cdn->cdn_prefix = $cdn_prefix; |
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$cdn->site_host = parse_url(get_site_url())['host']; |
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|
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add_filter('script_loader_tag', [$cdn, 'rollback'], 99, 3); |
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add_filter('script_loader_src', [$cdn, 'replaceAssetHost'], 10, 2); |
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add_filter('style_loader_src', [$cdn, 'replaceAssetHost'], 10, 2); |
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add_filter('wp_get_attachment_url', [$cdn, 'replaceAssetHost'], 10, 2); |
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add_filter('wp_calculate_image_srcset', function ($sources) use ($cdn) { |
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foreach ($sources as &$source) { |
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if (!empty($source['url'])) { |
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$source['url'] = $cdn->replaceAssetHost($source['url'], ''); |
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} |
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} |
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return $sources; |
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}, 10, 1); |
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} |
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|
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public function replaceAssetHost($original_src, $handle_or_attachment_id) |
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{ |
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if (empty($this->cdn_prefix) || stripos($original_src, ';')) { |
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return $original_src; |
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} |
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foreach ($this->excluded_handlers as $h) { |
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if (stripos($handle_or_attachment_id, $h) !== false) { |
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return $original_src; |
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} |
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} |
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$parsed_url = parse_url($original_src); |
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$sameHost = !empty($parsed_url['host']) && (strcasecmp($parsed_url['host'], $this->site_host) == 0); |
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$noHost = empty($parsed_url['host']); |
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if ($noHost || $sameHost) { |
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$parsed_url['host'] = $this->cdn_prefix; |
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$parsed_url['scheme'] = "https"; |
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$new_src = sprintf( |
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'%s://%s%s%s%s', |
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$parsed_url['scheme'], |
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$parsed_url['host'], |
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$parsed_url['path'], |
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!empty($parsed_url['query']) ? '?' . $parsed_url['query'] : '', |
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!empty($parsed_url['fragment']) ? '#' . $parsed_url['fragment'] : '' |
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); |
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$this->replaced_scripts[$new_src] = $original_src; |
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return $new_src; |
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} |
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return $original_src; |
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} |
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|
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public function rollback($tag, $handle, $new_src) |
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{ |
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if (!empty($new_src) && stripos($tag, "module") !== false && !empty($this->replaced_scripts[$new_src])) { |
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//rollback |
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$count = 0; |
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return str_replace($new_src, $this->replaced_scripts[$new_src], $tag, $count); |
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} |
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return $tag; |
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} |
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} |
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|
