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shortlinks.php
189 lines
| 1 | <?php |
| 2 | /** |
| 3 | * Module Name: WP.me Shortlinks |
| 4 | * Module Description: Generates shorter links using the wp.me domain. |
| 5 | * Sort Order: 8 |
| 6 | * First Introduced: 1.1 |
| 7 | * Requires Connection: Yes |
| 8 | * Auto Activate: No |
| 9 | * Module Tags: Social |
| 10 | * Feature: Writing |
| 11 | * Additional Search Queries: shortlinks, wp.me |
| 12 | * |
| 13 | * @package automattic/jetpack |
| 14 | */ |
| 15 | |
| 16 | add_filter( 'pre_get_shortlink', 'wpme_get_shortlink_handler', 1, 4 ); |
| 17 | |
| 18 | if ( ! function_exists( 'wpme_dec2sixtwo' ) ) { |
| 19 | /** |
| 20 | * Converts number to base 62. |
| 21 | * |
| 22 | * @param int $num Number. |
| 23 | * |
| 24 | * @return string Value in base 62. |
| 25 | */ |
| 26 | function wpme_dec2sixtwo( $num ) { |
| 27 | $index = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'; |
| 28 | $out = ''; |
| 29 | |
| 30 | if ( $num < 0 ) { |
| 31 | $out = '-'; |
| 32 | $num = abs( $num ); |
| 33 | } |
| 34 | |
| 35 | for ( $t = floor( log10( $num ) / log10( 62 ) ); $t >= 0; $t-- ) { |
| 36 | $a = floor( $num / pow( 62, $t ) ); |
| 37 | $out = $out . substr( $index, $a, 1 ); |
| 38 | $num = $num - ( $a * pow( 62, $t ) ); |
| 39 | } |
| 40 | |
| 41 | return $out; |
| 42 | } |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * Returns the WP.me shortlink. |
| 47 | * |
| 48 | * @param int $id Post ID, or 0 for the current post. |
| 49 | * @param string $context The context for the link. One of 'post' or 'query'. |
| 50 | * @param bool $allow_slugs Whether to allow post slugs in the shortlink. |
| 51 | * |
| 52 | * @return string |
| 53 | */ |
| 54 | function wpme_get_shortlink( $id = 0, $context = 'post', $allow_slugs = true ) { |
| 55 | global $wp_query; |
| 56 | |
| 57 | $blog_id = Jetpack_Options::get_option( 'id' ); |
| 58 | |
| 59 | if ( 'query' === $context ) { |
| 60 | if ( is_singular() ) { |
| 61 | $id = $wp_query->get_queried_object_id(); |
| 62 | $context = 'post'; |
| 63 | } elseif ( is_front_page() ) { |
| 64 | $context = 'blog'; |
| 65 | } else { |
| 66 | return ''; |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | if ( 'blog' === $context ) { |
| 71 | if ( empty( $id ) ) { |
| 72 | $id = $blog_id; |
| 73 | } |
| 74 | |
| 75 | return 'https://wp.me/' . wpme_dec2sixtwo( $id ); |
| 76 | } |
| 77 | |
| 78 | $post = get_post( $id ); |
| 79 | |
| 80 | if ( empty( $post ) ) { |
| 81 | return ''; |
| 82 | } |
| 83 | |
| 84 | $post_id = $post->ID; |
| 85 | $type = ''; |
| 86 | |
| 87 | if ( $allow_slugs && 'publish' === $post->post_status && 'post' === $post->post_type && strlen( $post->post_name ) <= 8 && ! str_contains( $post->post_name, '%' ) |
| 88 | && ! str_contains( $post->post_name, '-' ) ) { |
| 89 | $id = $post->post_name; |
| 90 | $type = 's'; |
| 91 | } else { |
| 92 | $id = wpme_dec2sixtwo( $post_id ); |
| 93 | if ( 'page' === $post->post_type ) { |
| 94 | $type = 'P'; |
| 95 | } elseif ( 'post' === $post->post_type || post_type_supports( $post->post_type, 'shortlinks' ) ) { |
| 96 | $type = 'p'; |
| 97 | } elseif ( 'attachment' === $post->post_type ) { |
| 98 | $type = 'a'; |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | if ( empty( $type ) ) { |
| 103 | return ''; |
| 104 | } |
| 105 | |
| 106 | return 'https://wp.me/' . $type . wpme_dec2sixtwo( $blog_id ) . '-' . $id; |
| 107 | } |
| 108 | |
| 109 | /** |
| 110 | * Get the shortlink handler. |
| 111 | * |
| 112 | * Used with the Core pre_get_shortlink hook. |
| 113 | * |
| 114 | * @param string $shortlink Shortlink value from the action. Ignored. |
| 115 | * @param int $id Post ID (0 for the current post). |
| 116 | * @param string $context The context for the link. One of 'post' or 'query'. |
| 117 | * @param bool $allow_slugs Whether to allow post slugs in the shortlink. |
| 118 | * |
| 119 | * @return string |
| 120 | */ |
| 121 | function wpme_get_shortlink_handler( $shortlink, $id, $context, $allow_slugs ) { |
| 122 | return wpme_get_shortlink( $id, $context, $allow_slugs ); |
| 123 | } |
| 124 | |
| 125 | /** |
| 126 | * Add Shortlinks to the REST API responses. |
| 127 | * |
| 128 | * @since 6.9.0 |
| 129 | * |
| 130 | * @action rest_api_init |
| 131 | * @uses register_rest_field, wpme_rest_get_shortlink |
| 132 | */ |
| 133 | function wpme_rest_register_shortlinks() { |
| 134 | // Post types that support shortlinks by default. |
| 135 | $supported_post_types = array( |
| 136 | 'attachment', |
| 137 | 'page', |
| 138 | 'post', |
| 139 | ); |
| 140 | |
| 141 | // Add any CPT that may have declared support for shortlinks. |
| 142 | foreach ( get_post_types() as $post_type ) { |
| 143 | if ( |
| 144 | post_type_supports( $post_type, 'shortlinks' ) |
| 145 | && post_type_supports( $post_type, 'editor' ) |
| 146 | ) { |
| 147 | $supported_post_types[] = $post_type; |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | register_rest_field( |
| 152 | $supported_post_types, |
| 153 | 'jetpack_shortlink', |
| 154 | array( |
| 155 | 'get_callback' => 'wpme_rest_get_shortlink', |
| 156 | 'update_callback' => null, |
| 157 | 'schema' => null, |
| 158 | ) |
| 159 | ); |
| 160 | } |
| 161 | |
| 162 | /** |
| 163 | * Get the shortlink of a post. |
| 164 | * |
| 165 | * @since 6.9.0 |
| 166 | * |
| 167 | * @param array $object Details of current post. |
| 168 | * |
| 169 | * @uses wpme_get_shortlink |
| 170 | * |
| 171 | * @return string |
| 172 | */ |
| 173 | function wpme_rest_get_shortlink( $object ) { |
| 174 | $object_id = $object['id'] ?? 0; |
| 175 | return wpme_get_shortlink( $object_id, array() ); |
| 176 | } |
| 177 | |
| 178 | // Add shortlinks to the REST API Post response. |
| 179 | add_action( 'rest_api_init', 'wpme_rest_register_shortlinks' ); |
| 180 | |
| 181 | /** |
| 182 | * Set the Shortlink Gutenberg extension as available. |
| 183 | */ |
| 184 | function wpme_set_extension_available() { |
| 185 | Jetpack_Gutenberg::set_extension_available( 'shortlinks' ); |
| 186 | } |
| 187 | |
| 188 | add_action( 'init', 'wpme_set_extension_available' ); |
| 189 |