Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like Jetpack_Media_Summary often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Jetpack_Media_Summary, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 7 | class Jetpack_Media_Summary { |
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| 8 | |||
| 9 | static function get( $post_id, $blog_id = 0, $args = array() ) { |
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| 10 | $defaults = array( |
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| 11 | 'max_words' => 16, |
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| 12 | 'max_chars' => 256, |
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| 13 | ); |
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| 14 | $args = wp_parse_args( $args, $defaults ); |
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| 15 | |||
| 16 | $switched = false; |
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| 17 | if ( !empty( $blog_id ) && $blog_id != get_current_blog_id() && function_exists( 'switch_to_blog' ) ) { |
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| 18 | switch_to_blog( $blog_id ); |
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| 19 | $switched = true; |
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| 20 | } else { |
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| 21 | $blog_id = get_current_blog_id(); |
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| 22 | } |
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| 23 | |||
| 24 | $post = get_post( $post_id ); |
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| 25 | $permalink = get_permalink( $post_id ); |
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| 26 | |||
| 27 | $return = array( |
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| 28 | 'type' => 'standard', |
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| 29 | 'permalink' => $permalink, |
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| 30 | 'image' => '', |
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| 31 | 'excerpt' => '', |
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| 32 | 'word_count' => 0, |
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| 33 | 'secure' => array( |
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| 34 | 'image' => '', |
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| 35 | ), |
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| 36 | 'count' => array( |
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| 37 | 'image' => 0, |
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| 38 | 'video' => 0, |
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| 39 | 'word' => 0, |
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| 40 | 'link' => 0, |
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| 41 | ), |
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| 42 | ); |
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| 43 | |||
| 44 | if ( empty( $post->post_password ) ) { |
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| 45 | $return['excerpt'] = self::get_excerpt( $post->post_content, $post->post_excerpt, $args['max_words'], $args['max_chars'] ); |
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| 46 | $return['count']['word'] = self::get_word_count( $post->post_content ); |
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| 47 | $return['count']['word_remaining'] = self::get_word_remaining_count( $post->post_content, $return['excerpt'] ); |
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| 48 | $return['count']['link'] = self::get_link_count( $post->post_content ); |
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| 49 | } |
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| 50 | |||
| 51 | $extract = Jetpack_Media_Meta_Extractor::extract( $blog_id, $post_id, Jetpack_Media_Meta_Extractor::ALL ); |
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| 52 | |||
| 53 | if ( empty( $extract['has'] ) ) |
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| 54 | return $return; |
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| 55 | |||
| 56 | // Prioritize [some] video embeds |
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| 57 | if ( !empty( $extract['has']['shortcode'] ) ) { |
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| 58 | foreach ( $extract['shortcode'] as $type => $data ) { |
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| 59 | switch ( $type ) { |
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| 60 | case 'wpvideo': |
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| 61 | if ( 0 == $return['count']['video'] ) { |
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| 62 | $return['type'] = 'video'; |
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| 63 | $return['video'] = esc_url_raw( 'http://s0.videopress.com/player.swf?guid=' . $extract['shortcode']['wpvideo']['id'][0] . '&isDynamicSeeking=true' ); |
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| 64 | $return['image'] = self::get_video_poster( 'videopress', $extract['shortcode']['wpvideo']['id'][0] ); |
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| 65 | $return['secure']['video'] = preg_replace( '@http://[^\.]+.videopress.com/@', 'https://v0.wordpress.com/', $return['video'] ); |
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| 66 | $return['secure']['image'] = str_replace( 'http://videos.videopress.com', 'https://videos.files.wordpress.com', $return['image'] ); |
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| 67 | } |
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| 68 | $return['count']['video']++; |
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| 69 | break; |
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| 70 | case 'youtube': |
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| 71 | if ( 0 == $return['count']['video'] ) { |
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| 72 | $return['type'] = 'video'; |
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| 73 | $return['video'] = esc_url_raw( 'http://www.youtube.com/watch?feature=player_embedded&v=' . $extract['shortcode']['youtube']['id'][0] ); |
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| 74 | $return['image'] = self::get_video_poster( 'youtube', $extract['shortcode']['youtube']['id'][0] ); |
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| 75 | $return['secure']['video'] = self::https( $return['video'] ); |
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| 76 | $return['secure']['image'] = self::https( $return['image'] ); |
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| 77 | } |
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| 78 | $return['count']['video']++; |
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| 79 | break; |
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| 80 | case 'vimeo': |
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| 81 | if ( 0 == $return['count']['video'] ) { |
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| 82 | $return['type'] = 'video'; |
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| 83 | $return['video'] = esc_url_raw( 'http://vimeo.com/' . $extract['shortcode']['vimeo']['id'][0] ); |
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| 84 | $return['secure']['video'] = self::https( $return['video'] ); |
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| 85 | |||
| 86 | $poster_image = get_post_meta( $post_id, 'vimeo_poster_image', true ); |
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| 87 | View Code Duplication | if ( !empty( $poster_image ) ) { |
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| 88 | $return['image'] = $poster_image; |
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| 89 | $poster_url_parts = parse_url( $poster_image ); |
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| 90 | $return['secure']['image'] = 'https://secure-a.vimeocdn.com' . $poster_url_parts['path']; |
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| 91 | } |
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| 92 | } |
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| 93 | $return['count']['video']++; |
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| 94 | break; |
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| 95 | } |
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| 96 | } |
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| 97 | |||
| 98 | } |
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| 99 | |||
| 100 | if ( !empty( $extract['has']['embed'] ) ) { |
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| 101 | foreach( $extract['embed']['url'] as $embed ) { |
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| 102 | if ( preg_match( '/((youtube|vimeo|dailymotion)\.com|youtu.be)/', $embed ) ) { |
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| 103 | if ( 0 == $return['count']['video'] ) { |
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| 104 | $return['type'] = 'video'; |
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| 105 | $return['video'] = 'http://' . $embed; |
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| 106 | $return['secure']['video'] = self::https( $return['video'] ); |
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| 107 | if ( false !== strpos( $embed, 'youtube' ) ) { |
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| 108 | $return['image'] = self::get_video_poster( 'youtube', jetpack_get_youtube_id( $return['video'] ) ); |
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| 109 | $return['secure']['image'] = self::https( $return['image'] ); |
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| 110 | } else if ( false !== strpos( $embed, 'youtu.be' ) ) { |
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| 111 | $youtube_id = jetpack_get_youtube_id( $return['video'] ); |
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| 112 | $return['video'] = 'http://youtube.com/watch?v=' . $youtube_id . '&feature=youtu.be'; |
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| 113 | $return['secure']['video'] = self::https( $return['video'] ); |
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| 114 | $return['image'] = self::get_video_poster( 'youtube', jetpack_get_youtube_id( $return['video'] ) ); |
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| 115 | $return['secure']['image'] = self::https( $return['image'] ); |
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| 116 | } else if ( false !== strpos( $embed, 'vimeo' ) ) { |
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| 117 | $poster_image = get_post_meta( $post_id, 'vimeo_poster_image', true ); |
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| 118 | View Code Duplication | if ( !empty( $poster_image ) ) { |
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| 119 | $return['image'] = $poster_image; |
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| 120 | $poster_url_parts = parse_url( $poster_image ); |
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| 121 | $return['secure']['image'] = 'https://secure-a.vimeocdn.com' . $poster_url_parts['path']; |
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| 122 | } |
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| 123 | } else if ( false !== strpos( $embed, 'dailymotion' ) ) { |
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| 124 | $return['image'] = str_replace( 'dailymotion.com/video/','dailymotion.com/thumbnail/video/', $embed ); |
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| 125 | $return['image'] = parse_url( $return['image'], PHP_URL_SCHEME ) === null ? 'http://' . $return['image'] : $return['image']; |
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| 126 | $return['secure']['image'] = self::https( $return['image'] ); |
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| 127 | } |
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| 128 | |||
| 129 | } |
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| 130 | $return['count']['video']++; |
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| 131 | } |
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| 132 | } |
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| 133 | } |
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| 134 | |||
| 135 | // Do we really want to make the video the primary focus of the post? |
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| 136 | if ( 'video' == $return['type'] ) { |
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| 137 | $content = wpautop( strip_tags( $post->post_content ) ); |
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| 138 | $paragraphs = explode( '</p>', $content ); |
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| 139 | $number_of_paragraphs = 0; |
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| 140 | |||
| 141 | foreach ( $paragraphs as $i => $paragraph ) { |
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| 142 | // Don't include blank lines as a paragraph |
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| 143 | if ( '' == trim( $paragraph ) ) { |
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| 144 | unset( $paragraphs[$i] ); |
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| 145 | continue; |
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| 146 | } |
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| 147 | $number_of_paragraphs++; |
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| 148 | } |
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| 149 | |||
| 150 | $number_of_paragraphs = $number_of_paragraphs - $return['count']['video']; // subtract amount for videos.. |
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| 151 | |||
| 152 | // More than 2 paragraph? The video is not the primary focus so we can do some more analysis |
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| 153 | if ( $number_of_paragraphs > 2 ) |
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| 154 | $return['type'] = 'standard'; |
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| 155 | } |
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| 156 | |||
| 157 | // If we don't have any prioritized embed... |
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| 158 | if ( 'standard' == $return['type'] ) { |
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| 159 | if ( ( ! empty( $extract['has']['gallery'] ) || ! empty( $extract['shortcode']['gallery']['count'] ) ) && ! empty( $extract['image'] ) ) { |
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| 160 | //... Then we prioritize galleries first (multiple images returned) |
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| 161 | $return['type'] = 'gallery'; |
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| 162 | $return['images'] = $extract['image']; |
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| 163 | foreach ( $return['images'] as $image ) { |
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| 164 | $return['secure']['images'][] = array( 'url' => self::ssl_img( $image['url'] ) ); |
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| 165 | $return['count']['image']++; |
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| 166 | } |
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| 167 | } else if ( ! empty( $extract['has']['image'] ) ) { |
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| 168 | // ... Or we try and select a single image that would make sense |
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| 169 | $content = wpautop( strip_tags( $post->post_content ) ); |
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| 170 | $paragraphs = explode( '</p>', $content ); |
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| 171 | $number_of_paragraphs = 0; |
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| 172 | |||
| 173 | foreach ( $paragraphs as $i => $paragraph ) { |
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| 174 | // Don't include 'actual' captions as a paragraph |
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| 175 | if ( false !== strpos( $paragraph, '[caption' ) ) { |
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| 176 | unset( $paragraphs[$i] ); |
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| 177 | continue; |
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| 178 | } |
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| 179 | // Don't include blank lines as a paragraph |
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| 180 | if ( '' == trim( $paragraph ) ) { |
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| 181 | unset( $paragraphs[$i] ); |
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| 182 | continue; |
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| 183 | } |
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| 184 | $number_of_paragraphs++; |
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| 185 | } |
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| 186 | |||
| 187 | $return['image'] = $extract['image'][0]['url']; |
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| 188 | $return['secure']['image'] = self::ssl_img( $return['image'] ); |
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| 189 | $return['count']['image']++; |
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| 190 | |||
| 191 | if ( $number_of_paragraphs <= 2 && 1 == count( $extract['image'] ) ) { |
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| 192 | // If we have lots of text or images, let's not treat it as an image post, but return its first image |
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| 193 | $return['type'] = 'image'; |
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| 194 | } |
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| 195 | } |
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| 196 | } |
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| 197 | |||
| 198 | if ( $switched ) { |
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| 199 | restore_current_blog(); |
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| 200 | } |
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| 201 | |||
| 202 | return $return; |
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| 203 | } |
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| 204 | |||
| 205 | static function https( $str ) { |
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| 208 | |||
| 209 | static function ssl_img( $url ) { |
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| 210 | if ( false !== strpos( $url, 'files.wordpress.com' ) ) { |
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| 211 | return self::https( $url ); |
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| 212 | } else { |
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| 213 | return self::https( jetpack_photon_url( $url ) ); |
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| 214 | } |
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| 215 | } |
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| 216 | |||
| 217 | static function get_video_poster( $type, $id ) { |
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| 218 | if ( 'videopress' == $type ) { |
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| 219 | if ( function_exists( 'video_get_highest_resolution_image_url' ) ) { |
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| 220 | return video_get_highest_resolution_image_url( $id ); |
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| 221 | } else if ( class_exists( 'VideoPress_Video' ) ) { |
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| 222 | $video = new VideoPress_Video( $id ); |
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| 223 | return $video->poster_frame_uri; |
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| 224 | } |
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| 225 | } else if ( 'youtube' == $type ) { |
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| 226 | return 'http://img.youtube.com/vi/'.$id.'/0.jpg'; |
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| 227 | } |
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| 228 | } |
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| 229 | |||
| 230 | static function clean_text( $text ) { |
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| 231 | return trim( |
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| 232 | preg_replace( |
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| 233 | '/[\s]+/', |
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| 234 | ' ', |
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| 235 | preg_replace( |
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| 236 | '@https?://[\S]+@', |
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| 237 | '', |
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| 238 | strip_shortcodes( |
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| 239 | strip_tags( |
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| 240 | $text |
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| 241 | ) |
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| 242 | ) |
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| 243 | ) |
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| 244 | ) |
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| 245 | ); |
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| 246 | } |
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| 247 | |||
| 248 | static function get_excerpt( $post_content, $post_excerpt, $max_words = 16, $max_chars = 256 ) { |
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| 249 | if ( function_exists( 'wpcom_enhanced_excerpt_extract_excerpt' ) ) { |
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| 250 | return self::clean_text( wpcom_enhanced_excerpt_extract_excerpt( array( |
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| 251 | 'text' => $post_content, |
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| 252 | 'excerpt_only' => true, |
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| 253 | 'show_read_more' => false, |
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| 254 | 'max_words' => $max_words, |
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| 255 | 'max_chars' => $max_chars, |
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| 256 | 'read_more_threshold' => 25, |
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| 257 | ) ) ); |
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| 258 | } else { |
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| 259 | |||
| 260 | /** This filter is documented in core/src/wp-includes/post-template.php */ |
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| 261 | $post_excerpt = apply_filters( 'get_the_excerpt', $post_excerpt ); |
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| 262 | return self::clean_text( $post_excerpt ); |
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| 263 | } |
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| 264 | } |
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| 265 | |||
| 266 | static function get_word_count( $post_content ) { |
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| 269 | |||
| 270 | static function get_word_remaining_count( $post_content, $excerpt_content ) { |
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| 273 | |||
| 274 | static function get_link_count( $post_content ) { |
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| 277 | } |
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| 278 |
This check looks for improperly formatted assignments.
Every assignment must have exactly one space before and one space after the equals operator.
To illustrate:
will have no issues, while
will report issues in lines 1 and 2.