315 lines
10 KiB
PHP
315 lines
10 KiB
PHP
<?php
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/**
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* Parses post markup in order to use specified spee.ch url for assets
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*
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* @package LBRYPress
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*/
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class LBRY_Speech_Parser
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{
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/**
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* [speech_image_srcset description]
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* @param [type] $sources [description]
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* @param [type] $size_array [description]
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* @param [type] $image_src [description]
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* @param [type] $image_meta [description]
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* @param [type] $attachment_id [description]
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*/
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public function replace_image_srcset($sources, $size_array, $image_src, $image_meta, $attachment_id)
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{
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$time_start = microtime(true);
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$new_sources = $sources;
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$sizes = $image_meta['sizes'];
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foreach ($sources as $width => $source) {
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$speech_url = $this->find_speech_url_by_width($sizes, $width);
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if ($speech_url) {
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$new_sources[$width]['url'] = $speech_url;
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}
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}
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$time_end = microtime(true);
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$time = ($time_end - $time_start) * 1000;
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// error_log("srcset in $time milliseconds");
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return $new_sources;
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}
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/**
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* [replace_urls_with_speech description]
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* @param [type] $content [description]
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* @return [type] [description]
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*/
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public function replace_urls_with_speech($content)
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{
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$new_content = $content;
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$assets = array();
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// Get Images
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$images = $this->scrape_images($content);
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error_log(print_r($images, true));
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foreach ($images as $image) {
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if ($src = $this->get_src_from_image_tag($image)) {
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$assets[] = $src;
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}
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}
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// Get Videos
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$videos = $this->scrape_videos($content);
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error_log(print_r($videos, true));
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foreach ($videos as $video) {
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if ($src = $this->get_src_from_video_tag($video)) {
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$assets[] = $src;
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}
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}
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// Replace with Speech Urls
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error_log(print_r($assets, true));
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foreach ($assets as $asset) {
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$id = $this->rigid_attachment_url_to_postid($asset);
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$meta = wp_get_attachment_metadata($id);
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if ($meta && LBRY()->speech->is_published($meta) && $speech_url = $this->find_speech_url_by_file_url($meta, $asset)) {
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$new_content = str_replace($asset, $speech_url, $new_content);
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}
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}
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return $new_content;
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}
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/**
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* [replace_attachment_image_src description]
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* @param [type] $image [description]
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* @param [type] $attachment_id [description]
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* @param [type] $size [description]
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* @return [type] [description]
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*/
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public function replace_attachment_image_src($image, $attachment_id, $size)
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{
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if (!$image) {
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return $image;
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}
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// Die if we don't have a speech_asset_url
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$image_meta = wp_get_attachment_metadata($attachment_id);
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if (!LBRY()->speech->is_published($image_meta)) {
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return $image;
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}
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$new_image = $image;
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$sizes = $image_meta['sizes'];
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// If we have a given size, then use that immediately
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if (is_string($size)) {
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switch ($size) {
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case 'full':
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$new_image[0] = $image_meta['speech_asset_url'];
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break;
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case 'post-thumbnail':
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if (LBRY()->speech->is_published($sizes['thumbnail'])) {
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$new_image[0] = $sizes['thumbnail']['speech_asset_url'];
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}
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break;
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default:
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if (key_exists($size, $sizes) && LBRY()->speech->is_published($sizes[$size])) {
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$new_image[0] = $sizes[$size]['speech_asset_url'];
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}
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break;
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}
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return $new_image;
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}
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// Otherwise, we can find it by the url provided
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$speech_url = $this->find_speech_url_by_file_url($image_meta, $image[0]);
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if ($speech_url) {
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$new_image[0] = $speech_url;
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}
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return $new_image;
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}
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/**
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* Scrapes all image tags from content
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* @param string $content The content to scrape
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* @return array Array of image tags, empty if none found
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*/
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public function scrape_images($content)
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{
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// Find all images
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preg_match_all('/<img [^>]+>/', $content, $images);
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// Check to make sure we have results
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$images = empty($images[0]) ? array() : $images[0];
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return array_unique($images);
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}
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/**
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* Scrapes all video shortcodes from content
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* @param string $content The content to scrape
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* @return array Array of video tags, empty if none found
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*/
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public function scrape_videos($content)
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{
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// Only MP4 videos for now
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preg_match_all('/\[video.*mp4=".*".*\]/', $content, $videos);
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$videos = empty($videos[0]) ? array() : $videos[0];
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return array_unique($videos);
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}
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/**
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* Retrives an attachment ID via an html tag
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* @param string $type Can be 'image' or 'mp4'
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* @param string $tag The Tag / shortcode to scrub for an ID
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* @return int|bool An ID if one is found, false otherwise
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*/
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public function get_attachment_id_from_tag($type, $tag)
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{
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$attachment_id = false;
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switch ($type) {
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case 'image':
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// Looks for wp image class first, if not, pull id from source
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if (preg_match('/wp-image-([0-9]+)/i', $tag, $class_id)) {
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$attachment_id = absint($class_id[1]);
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} elseif ($src = $this->get_src_from_image_tag($tag)) {
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$attachment_id = $this->rigid_attachment_url_to_postid($src);
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}
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break;
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case 'mp4':
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if ($src = $this->get_src_from_video_tag($tag)) {
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$attachment_id = $this->rigid_attachment_url_to_postid($src);
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}
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break;
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}
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return $attachment_id;
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}
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/**
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* Pulls src from image tag
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* @param string $image HTML Image tag
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* @return string The source if found and is a local source, otherwise false
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*/
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private function get_src_from_image_tag($image)
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{
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if (preg_match('/src="((?:https?:)?\/\/[^"]+)"/', $image, $src) && $src[1]) {
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if ($this->is_local($src[1])) {
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return $src[1];
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}
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}
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return false;
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}
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/**
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* Pulls src from video tag
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* @param string $video The video shortcode
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* @return string The source if found and is a local source, otherwise false
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*/
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private function get_src_from_video_tag($video)
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{
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if (preg_match('/mp4="((?:https?:)?\/\/[^"]+)"/', $video, $src) && $src[1]) {
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if ($this->is_local($src[1])) {
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return $src[1];
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}
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}
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return false;
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}
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/**
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* Retrieves a speech_asset_url based sizes meta provided
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* @param array $sizes Image sizes meta array
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* @param string $width The width to look for
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* @return string An asset url if found, false if not
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*/
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private function find_speech_url_by_width($sizes, $width)
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{
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foreach ($sizes as $key => $size) {
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if ($size['width'] == $width && key_exists('speech_asset_url', $size)) {
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return $size['speech_asset_url'];
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}
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}
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return false;
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}
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/**
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* Retrieves a speech_asset_url based on a passed url
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* @param array $meta The attachment meta data for the asset
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* @param string $url The URL of the asset being exchanged
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* @return string The URL of the Speech Asset
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*/
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private function find_speech_url_by_file_url($meta, $url)
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{
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// See if this looks like video meta
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if (!key_exists('file', $meta) && key_exists('mime_type', $meta) && $meta['mime_type'] == 'video/mp4') {
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return $meta['speech_asset_url'];
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}
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$pathinfo = pathinfo($url);
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$basename = $pathinfo['basename'];
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// Check main file or if $meta is just a url (video) first
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if (key_exists('file', $meta) && $basename == wp_basename($meta['file'])) {
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return $meta['speech_asset_url'];
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}
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// Check to see if we have a meta option here
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if (key_exists('sizes', $meta)) {
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// Then check sizes
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foreach ($meta['sizes'] as $size => $meta) {
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if ($basename == $meta['file'] && key_exists('speech_asset_url', $meta)) {
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return $meta['speech_asset_url'];
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}
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}
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}
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// Couldn't make a match
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return false;
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}
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/**
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* Checks to see if a url is local to this installation
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* @param string $url
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* @return boolean
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*/
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private function is_local($url)
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{
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if (strpos($url, home_url()) !== false) {
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return true;
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}
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}
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/**
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* Checks for image crop sizes and filters out query params
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* Courtesy of this post: http://bordoni.me/get-attachment-id-by-image-url/
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* @param string $url The url of the attachment you want an ID for
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* @return int The found post_id
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*/
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private function rigid_attachment_url_to_postid($url)
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{
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$scrubbed_url = strtok($url, '?'); // Clean up query params first
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$post_id = attachment_url_to_postid($scrubbed_url);
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if (! $post_id) {
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$dir = wp_upload_dir();
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$path = $scrubbed_url;
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if (0 === strpos($path, $dir['baseurl'] . '/')) {
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$path = substr($path, strlen($dir['baseurl'] . '/'));
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}
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if (preg_match('/^(.*)(\-\d*x\d*)(\.\w{1,})/i', $path, $matches)) {
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$url = $dir['baseurl'] . '/' . $matches[1] . $matches[3];
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$post_id = attachment_url_to_postid($url);
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}
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}
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return (int) $post_id;
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}
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}
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