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| 1 | <?php |
| 2 | |
| 3 | namespace Automattic\Jetpack_Boost\Lib\Minify; |
| 4 | |
| 5 | use WP_Styles; |
| 6 | |
| 7 | // Disable complaints about enqueuing stylesheets, as this class alters the way enqueuing them works. |
| 8 | // phpcs:disable WordPress.WP.EnqueuedResources.NonEnqueuedStylesheet |
| 9 | |
| 10 | /** |
| 11 | * Replacement for, and subclass of WP_Styles - used to control the way that styles are enqueued and output. |
| 12 | */ |
| 13 | class Concatenate_CSS extends WP_Styles { |
| 14 | private $dependency_path_mapping; |
| 15 | private $old_styles; |
| 16 | |
| 17 | public $allow_gzip_compression; |
| 18 | |
| 19 | public function __construct( $styles ) { |
| 20 | if ( empty( $styles ) || ! ( $styles instanceof WP_Styles ) ) { |
| 21 | $this->old_styles = new WP_Styles(); |
| 22 | } else { |
| 23 | $this->old_styles = $styles; |
| 24 | } |
| 25 | |
| 26 | // Unset all the object properties except our private copy of the styles object. |
| 27 | // We have to unset everything so that the overload methods talk to $this->old_styles->whatever |
| 28 | // instead of $this->whatever. |
| 29 | foreach ( array_keys( get_object_vars( $this ) ) as $key ) { |
| 30 | if ( 'old_styles' === $key ) { |
| 31 | continue; |
| 32 | } |
| 33 | unset( $this->$key ); |
| 34 | } |
| 35 | |
| 36 | $this->dependency_path_mapping = new Dependency_Path_Mapping( |
| 37 | /** |
| 38 | * Filter the URL of the site the plugin will be concatenating CSS or JS on |
| 39 | * |
| 40 | * @param string $url URL of the page with CSS or JS to concatonate. |
| 41 | * |
| 42 | * @since 1.0.0 |
| 43 | */ |
| 44 | apply_filters( 'page_optimize_site_url', $this->base_url ) |
| 45 | ); |
| 46 | } |
| 47 | |
| 48 | public function do_items( $handles = false, $group = false ) { |
| 49 | $handles = false === $handles ? $this->queue : (array) $handles; |
| 50 | $stylesheets = array(); |
| 51 | /** |
| 52 | * Filter the URL of the site the plugin will be concatenating CSS or JS on |
| 53 | * |
| 54 | * @param string $url URL of the page with CSS or JS to concatonate. |
| 55 | * |
| 56 | * @since 1.0.0 |
| 57 | */ |
| 58 | $siteurl = apply_filters( 'page_optimize_site_url', $this->base_url ); |
| 59 | |
| 60 | $this->all_deps( $handles ); |
| 61 | |
| 62 | $stylesheet_group_index = 0; |
| 63 | // Merge CSS into a single file |
| 64 | $concat_group = 'concat'; |
| 65 | // Concat group on top (first array element gets processed earlier) |
| 66 | $stylesheets[ $concat_group ] = array(); |
| 67 | |
| 68 | foreach ( $this->to_do as $key => $handle ) { |
| 69 | $obj = $this->registered[ $handle ]; |
| 70 | /** |
| 71 | * Filter the style source URL |
| 72 | * |
| 73 | * @param string $url URL of the page with CSS or JS to concatonate. |
| 74 | * @param string $handle handle to CSS file. |
| 75 | * |
| 76 | * @since 1.0.0 |
| 77 | */ |
| 78 | $obj->src = apply_filters( 'style_loader_src', $obj->src, $obj->handle ); |
| 79 | |
| 80 | // Core is kind of broken and returns "true" for src of "colors" handle |
| 81 | // http://core.trac.wordpress.org/attachment/ticket/16827/colors-hacked-fixed.diff |
| 82 | // http://core.trac.wordpress.org/ticket/20729 |
| 83 | $css_url = $obj->src; |
| 84 | if ( 'colors' === $obj->handle && true === $css_url ) { |
| 85 | $css_url = wp_style_loader_src( $css_url, $obj->handle ); |
| 86 | } |
| 87 | |
| 88 | $css_url = jetpack_boost_enqueued_to_absolute_url( $css_url ); |
| 89 | $css_url_parsed = wp_parse_url( $css_url ); |
| 90 | $extra = $obj->extra; |
| 91 | |
| 92 | // Don't concat by default |
| 93 | $do_concat = false; |
| 94 | |
| 95 | // Only try to concat static css files |
| 96 | if ( str_contains( $css_url_parsed['path'], '.css' ) ) { |
| 97 | $do_concat = true; |
| 98 | } elseif ( defined( 'WP_DEBUG' ) && WP_DEBUG ) { |
| 99 | printf( "\n<!-- No Concat CSS %s => Maybe Not Static File %s -->\n", esc_html( $handle ), esc_html( $obj->src ) ); |
| 100 | } |
| 101 | |
| 102 | // Don't try to concat styles which are loaded conditionally (like IE stuff) |
| 103 | if ( isset( $extra['conditional'] ) ) { |
| 104 | if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) { |
| 105 | printf( "\n<!-- No Concat CSS %s => Has Conditional -->\n", esc_html( $handle ) ); |
| 106 | } |
| 107 | $do_concat = false; |
| 108 | } |
| 109 | |
| 110 | // Don't concat rtl stuff for now until concat supports it correctly |
| 111 | if ( $do_concat && 'rtl' === $this->text_direction && ! empty( $extra['rtl'] ) ) { |
| 112 | if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) { |
| 113 | printf( "\n<!-- No Concat CSS %s => Is RTL -->\n", esc_html( $handle ) ); |
| 114 | } |
| 115 | $do_concat = false; |
| 116 | } |
| 117 | |
| 118 | // Don't try to concat externally hosted scripts |
| 119 | $is_internal_uri = $this->dependency_path_mapping->is_internal_uri( $css_url ); |
| 120 | if ( $do_concat && ! $is_internal_uri ) { |
| 121 | if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) { |
| 122 | printf( "\n<!-- No Concat CSS %s => External URL: %s -->\n", esc_html( $handle ), esc_url( $css_url ) ); |
| 123 | } |
| 124 | $do_concat = false; |
| 125 | } |
| 126 | |
| 127 | if ( $do_concat ) { |
| 128 | // Resolve paths and concat styles that exist in the filesystem |
| 129 | $css_realpath = $this->dependency_path_mapping->dependency_src_to_fs_path( $css_url ); |
| 130 | if ( false === $css_realpath ) { |
| 131 | if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) { |
| 132 | printf( "\n<!-- No Concat CSS %s => Invalid Path %s -->\n", esc_html( $handle ), esc_html( $css_realpath ) ); |
| 133 | } |
| 134 | $do_concat = false; |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | // Skip concating CSS from exclusion list |
| 139 | $exclude_list = jetpack_boost_page_optimize_css_exclude_list(); |
| 140 | foreach ( $exclude_list as $exclude ) { |
| 141 | if ( $do_concat && $handle === $exclude ) { |
| 142 | $do_concat = false; |
| 143 | if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) { |
| 144 | printf( "\n<!-- No Concat CSS %s => Excluded option -->\n", esc_html( $handle ) ); |
| 145 | } |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * Filter that allows plugins to disable concatenation of certain stylesheets. |
| 151 | * |
| 152 | * @param bool $do_concat if true, then perform concatenation |
| 153 | * @param string $handle handle to CSS file |
| 154 | * |
| 155 | * @since 1.0.0 |
| 156 | */ |
| 157 | if ( $do_concat && ! apply_filters( 'css_do_concat', $do_concat, $handle ) ) { |
| 158 | if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) { |
| 159 | printf( "\n<!-- No Concat CSS %s => Filtered `false` -->\n", esc_html( $handle ) ); |
| 160 | } |
| 161 | } |
| 162 | /** |
| 163 | * Filter that allows plugins to disable concatenation of certain stylesheets. |
| 164 | * |
| 165 | * @param bool $do_concat if true, then perform concatenation |
| 166 | * @param string $handle handle to CSS file |
| 167 | * |
| 168 | * @since 1.0.0 |
| 169 | */ |
| 170 | $do_concat = apply_filters( 'css_do_concat', $do_concat, $handle ); |
| 171 | |
| 172 | if ( true === $do_concat ) { |
| 173 | $media = $obj->args; |
| 174 | if ( empty( $media ) ) { |
| 175 | $media = 'all'; |
| 176 | } |
| 177 | |
| 178 | $stylesheets[ $concat_group ][ $media ][ $handle ] = $css_url_parsed['path']; |
| 179 | $this->done[] = $handle; |
| 180 | } else { |
| 181 | ++$stylesheet_group_index; |
| 182 | $stylesheets[ $stylesheet_group_index ]['noconcat'][] = $handle; |
| 183 | ++$stylesheet_group_index; |
| 184 | } |
| 185 | unset( $this->to_do[ $key ] ); |
| 186 | } |
| 187 | |
| 188 | foreach ( $stylesheets as $_idx => $stylesheets_group ) { |
| 189 | foreach ( $stylesheets_group as $media => $css ) { |
| 190 | $href = ''; |
| 191 | if ( 'noconcat' === $media ) { |
| 192 | foreach ( $css as $handle ) { |
| 193 | if ( $this->do_item( $handle, $group ) ) { |
| 194 | $this->done[] = $handle; |
| 195 | } |
| 196 | } |
| 197 | continue; |
| 198 | } elseif ( count( $css ) > 0 ) { |
| 199 | // Split the CSS into groups of max files, we are also chunking the handles to match the CSS groups and depending on order to be maintained. |
| 200 | $css_groups = array_chunk( $css, jetpack_boost_minify_concat_max_files(), true ); |
| 201 | |
| 202 | foreach ( $css_groups as $css_group ) { |
| 203 | $file_name = jetpack_boost_page_optimize_generate_concat_path( $css_group, $this->dependency_path_mapping ); |
| 204 | |
| 205 | if ( get_site_option( 'jetpack_boost_static_minification' ) ) { |
| 206 | $href = jetpack_boost_get_minify_url( $file_name . '.min.css' ); |
| 207 | } else { |
| 208 | $href = $siteurl . jetpack_boost_get_static_prefix() . '??' . $file_name; |
| 209 | } |
| 210 | |
| 211 | $this->print_style_tag( $href, array_keys( $css_group ), $media ); |
| 212 | } |
| 213 | } |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | return $this->done; |
| 218 | } |
| 219 | |
| 220 | private function print_style_tag( $href, $handles, $media ) { |
| 221 | $css_id = sanitize_title_with_dashes( $media ) . '-css-' . md5( $href ); |
| 222 | if ( defined( 'WP_DEBUG' ) && WP_DEBUG ) { |
| 223 | $style_tag = "<link data-handles='" . esc_attr( implode( ',', $handles ) ) . "' rel='stylesheet' id='$css_id' href='$href' type='text/css' media='$media' />"; |
| 224 | } else { |
| 225 | $style_tag = "<link rel='stylesheet' id='$css_id' href='$href' type='text/css' media='$media' />"; |
| 226 | } |
| 227 | |
| 228 | /** |
| 229 | * Filter the style loader HTML tag for page optimize. |
| 230 | * |
| 231 | * @param string $style_tag style loader tag |
| 232 | * @param array $handles handles of CSS files |
| 233 | * @param string $href link to CSS file |
| 234 | * @param string $media media attribute of the link. |
| 235 | * |
| 236 | * @since 1.0.0 |
| 237 | */ |
| 238 | $style_tag = apply_filters( 'page_optimize_style_loader_tag', $style_tag, $handles, $href, $media ); |
| 239 | |
| 240 | /** |
| 241 | * Filter the stylesheet tag. For example: making it deferred when using Critical CSS. |
| 242 | * |
| 243 | * @param string $style_tag stylesheet tag |
| 244 | * @param array $handles handles of CSS files |
| 245 | * @param string $href link to CSS file |
| 246 | * @param string $media media attribute of the link. |
| 247 | * |
| 248 | * @since 1.0.0 |
| 249 | */ |
| 250 | $style_tag = apply_filters( 'style_loader_tag', $style_tag, implode( ',', $handles ), $href, $media ); |
| 251 | |
| 252 | // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped |
| 253 | echo $style_tag . "\n"; |
| 254 | |
| 255 | array_map( array( $this, 'print_inline_style' ), $handles ); |
| 256 | } |
| 257 | |
| 258 | public function __isset( $key ) { |
| 259 | return isset( $this->old_styles->$key ); |
| 260 | } |
| 261 | |
| 262 | public function __unset( $key ) { |
| 263 | unset( $this->old_styles->$key ); |
| 264 | } |
| 265 | |
| 266 | public function &__get( $key ) { |
| 267 | return $this->old_styles->$key; |
| 268 | } |
| 269 | |
| 270 | public function __set( $key, $value ) { |
| 271 | $this->old_styles->$key = $value; |
| 272 | } |
| 273 | } |