| 1 |
<?php |
| 2 |
/** |
| 3 |
* File optimizer (minify, contact) related functionalities |
| 4 |
* |
| 5 |
* @package PoweredCache |
| 6 |
*/ |
| 7 |
|
| 8 |
namespace PoweredCache; |
| 9 |
|
| 10 |
use const PoweredCache\Constants\POST_META_DISABLE_CSS_OPTIMIZATION; |
| 11 |
use const PoweredCache\Constants\POST_META_DISABLE_JS_OPTIMIZATION; |
| 12 |
use PoweredCache\Optimizer\CSS; |
| 13 |
use PoweredCache\Optimizer\Helper; |
| 14 |
use PoweredCache\Optimizer\JS; |
| 15 |
use function PoweredCache\Utils\get_cache_dir; |
| 16 |
use function PoweredCache\Utils\remove_dir; |
| 17 |
|
| 18 |
|
| 19 |
/** |
| 20 |
* Class FileOptimizer |
| 21 |
*/ |
| 22 |
class FileOptimizer { |
| 23 |
/** |
| 24 |
* Plugin settings |
| 25 |
* |
| 26 |
* @var array |
| 27 |
*/ |
| 28 |
public $settings = []; |
| 29 |
|
| 30 |
/** |
| 31 |
* Do optimizations for wp-admin? |
| 32 |
* |
| 33 |
* @var bool |
| 34 |
*/ |
| 35 |
public $optimize_dashboard; |
| 36 |
|
| 37 |
|
| 38 |
/** |
| 39 |
* Return an instance of the current class |
| 40 |
* |
| 41 |
* @return FileOptimizer |
| 42 |
* @since 1.0 |
| 43 |
*/ |
| 44 |
public static function factory() { |
| 45 |
static $instance = false; |
| 46 |
|
| 47 |
if ( ! $instance ) { |
| 48 |
$instance = new self(); |
| 49 |
$instance->setup(); |
| 50 |
} |
| 51 |
|
| 52 |
return $instance; |
| 53 |
} |
| 54 |
|
| 55 |
/** |
| 56 |
* Setup routine |
| 57 |
*/ |
| 58 |
public function setup() { |
| 59 |
$this->settings = \PoweredCache\Utils\get_settings(); |
| 60 |
/** |
| 61 |
* Filters whether apply or not apply file optimizations on wp-admin. |
| 62 |
* |
| 63 |
* @hook powered_cache_fo_dashboard |
| 64 |
* |
| 65 |
* @param {boolean} true to enable optimizations for dashboard. |
| 66 |
* |
| 67 |
* @return {boolean} New value. |
| 68 |
* @since 2.0 |
| 69 |
*/ |
| 70 |
$this->optimize_dashboard = apply_filters( 'powered_cache_fo_dashboard', false ); |
| 71 |
|
| 72 |
add_action( 'powered_cache_purge_all_cache', [ $this, 'maybe_purge_fo_cache' ] ); |
| 73 |
|
| 74 |
/** |
| 75 |
* Don't optimize wp-admin by default |
| 76 |
* This might worth to add as option? |
| 77 |
*/ |
| 78 |
|
| 79 |
if ( is_admin() && ! $this->optimize_dashboard ) { |
| 80 |
return; |
| 81 |
} |
| 82 |
|
| 83 |
add_action( 'init', [ $this, 'setup_css_combine' ] ); |
| 84 |
add_action( 'init', [ $this, 'setup_js_combine' ] ); |
| 85 |
add_filter( 'script_loader_tag', [ $this, 'js_minify' ], 10, 3 ); |
| 86 |
add_filter( 'style_loader_tag', [ $this, 'css_minify' ], 10, 4 ); |
| 87 |
|
| 88 |
if ( ! $this->settings['combine_js'] ) { |
| 89 |
add_filter( 'powered_cache_fo_js_do_concat', '__return_false' ); |
| 90 |
} |
| 91 |
|
| 92 |
if ( ! $this->settings['combine_css'] ) { |
| 93 |
add_filter( 'powered_cache_fo_css_do_concat', '__return_false' ); |
| 94 |
} |
| 95 |
|
| 96 |
add_filter( 'powered_cache_fo_script_loader_tag', [ $this, 'change_js_execute_method' ] ); |
| 97 |
|
| 98 |
if ( ! $this->settings['js_execution_optimized_only'] ) { |
| 99 |
add_filter( 'script_loader_tag', [ $this, 'change_js_execute_method' ], 99 ); |
| 100 |
} |
| 101 |
|
| 102 |
add_action( 'after_setup_theme', [ $this, 'html_minify' ] ); |
| 103 |
|
| 104 |
if ( $this->settings['combine_google_fonts'] ) { |
| 105 |
add_action( 'wp_enqueue_scripts', [ $this, 'combine_google_fonts' ], 99 ); |
| 106 |
} |
| 107 |
|
| 108 |
add_action( 'template_redirect', [ $this, 'maybe_suppress_optimizations' ] ); |
| 109 |
} |
| 110 |
|
| 111 |
|
| 112 |
/** |
| 113 |
* Maybe suppress optimizations based on the post meta options |
| 114 |
* |
| 115 |
* @since 2.1 |
| 116 |
*/ |
| 117 |
public function maybe_suppress_optimizations() { |
| 118 |
if ( is_singular() ) { |
| 119 |
$disable_css_optimization = (bool) get_post_meta( get_the_ID(), POST_META_DISABLE_CSS_OPTIMIZATION, true ); |
| 120 |
$disable_js_optimization = (bool) get_post_meta( get_the_ID(), POST_META_DISABLE_JS_OPTIMIZATION, true ); |
| 121 |
|
| 122 |
if ( $disable_css_optimization ) { |
| 123 |
add_filter( 'powered_cache_fo_css_do_concat', '__return_false' ); |
| 124 |
add_filter( 'powered_cache_fo_disable_css_minify', '__return_true' ); |
| 125 |
} |
| 126 |
|
| 127 |
if ( $disable_js_optimization ) { |
| 128 |
add_filter( 'powered_cache_fo_js_do_concat', '__return_false' ); |
| 129 |
add_filter( 'powered_cache_fo_disable_js_minify', '__return_true' ); |
| 130 |
} |
| 131 |
} |
| 132 |
} |
| 133 |
|
| 134 |
/** |
| 135 |
* Purge FO cache |
| 136 |
* |
| 137 |
* @since 2.0 |
| 138 |
*/ |
| 139 |
public function maybe_purge_fo_cache() { |
| 140 |
if ( file_exists( POWERED_CACHE_FO_CACHE_DIR ) ) { |
| 141 |
remove_dir( POWERED_CACHE_FO_CACHE_DIR ); |
| 142 |
} |
| 143 |
} |
| 144 |
|
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/** |
| 146 |
* Minify HTML output |
| 147 |
*/ |
| 148 |
public function html_minify() { |
| 149 |
if ( ! $this->settings['minify_html'] ) { |
| 150 |
return; |
| 151 |
} |
| 152 |
|
| 153 |
/** |
| 154 |
* Filters whether disable or not disable HTML minification. |
| 155 |
* |
| 156 |
* @hook powered_cache_fo_disable_html_minify |
| 157 |
* |
| 158 |
* @param {boolean} true to disable html minify |
| 159 |
* |
| 160 |
* @return {boolean} New value. |
| 161 |
* @since 2.0 |
| 162 |
*/ |
| 163 |
if ( apply_filters( 'powered_cache_fo_disable_html_minify', false ) ) { |
| 164 |
return; |
| 165 |
} |
| 166 |
|
| 167 |
ob_start( [ $this, 'run_html_minify' ] ); |
| 168 |
} |
| 169 |
|
| 170 |
/** |
| 171 |
* Minify given HTML output |
| 172 |
* |
| 173 |
* @param string $buffer HTML |
| 174 |
* |
| 175 |
* @return string|string[]|null |
| 176 |
*/ |
| 177 |
public function run_html_minify( $buffer ) { |
| 178 |
$search = array( |
| 179 |
'/\>[^\S ]+/s', // strip whitespaces after tags, except space |
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'/[^\S ]+\</s', // strip whitespaces before tags, except space |
| 181 |
'/(\s)+/s', // shorten multiple whitespace sequences |
| 182 |
'/^\\s+|\\s+$/', // shorten multiple whitespace sequences |
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); |
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|
| 185 |
$replace = array( '>', '<', '\\1', ' ' ); |
| 186 |
$buffer = preg_replace( $search, $replace, $buffer ); |
| 187 |
|
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return $buffer; |
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} |
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|
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|
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/** |
| 193 |
* Add JS execution method to script tag |
| 194 |
* |
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* @param string $tag <script... tag |
| 196 |
* |
| 197 |
* @return mixed |
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*/ |
| 199 |
public function change_js_execute_method( $tag ) { |
| 200 |
$js_execution = $this->settings['js_execution_method']; |
| 201 |
if ( ! $js_execution ) { |
| 202 |
return $tag; |
| 203 |
} |
| 204 |
|
| 205 |
if ( 'blocking' === $js_execution ) { |
| 206 |
return $tag; |
| 207 |
} |
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|
| 209 |
if ( 'async' === $js_execution ) { |
| 210 |
$js_attr = 'async="async"'; |
| 211 |
} elseif ( 'defer' === $js_execution ) { |
| 212 |
$js_attr = 'defer="defer"'; |
| 213 |
} |
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|
| 215 |
if ( false === stripos( $tag, $js_attr ) ) { |
| 216 |
$search = '<script '; |
| 217 |
$replace = sprintf( '<script %s ', $js_attr ); |
| 218 |
$tag = str_replace( $search, $replace, $tag ); |
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} |
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|
| 221 |
return $tag; |
| 222 |
} |
| 223 |
|
| 224 |
/** |
| 225 |
* Minify CSS item |
| 226 |
* |
| 227 |
* @param string $tag style tag <link... |
| 228 |
* @param string $handle style handle name |
| 229 |
* @param string $href Resource URL |
| 230 |
* @param string $media CSS media |
| 231 |
* |
| 232 |
* @return mixed |
| 233 |
*/ |
| 234 |
public function css_minify( $tag, $handle, $href, $media ) { |
| 235 |
if ( ! $this->settings['minify_css'] ) { |
| 236 |
return $tag; |
| 237 |
} |
| 238 |
|
| 239 |
/** |
| 240 |
* Filters whether disable or not disable CSS minification. |
| 241 |
* |
| 242 |
* @hook powered_cache_fo_disable_css_minify |
| 243 |
* |
| 244 |
* @param {boolean} true to disable CSS minify |
| 245 |
* |
| 246 |
* @return {boolean} New value. |
| 247 |
* @since 2.0 |
| 248 |
*/ |
| 249 |
if ( apply_filters( 'powered_cache_fo_disable_css_minify', false ) ) { |
| 250 |
return $tag; |
| 251 |
} |
| 252 |
|
| 253 |
// only minify static .css |
| 254 |
if ( false === strpos( $href, '.css' ) ) { |
| 255 |
return $tag; |
| 256 |
} |
| 257 |
|
| 258 |
// already minified |
| 259 |
if ( false !== strpos( $href, '.min' ) ) { |
| 260 |
return $tag; |
| 261 |
} |
| 262 |
|
| 263 |
// only minify local hosted |
| 264 |
if ( ! Helper::is_internal_url( $href, home_url() ) ) { |
| 265 |
return $tag; |
| 266 |
} |
| 267 |
|
| 268 |
// excluded explicitly |
| 269 |
if ( Helper::is_excluded_css( $href ) ) { |
| 270 |
return $tag; |
| 271 |
} |
| 272 |
|
| 273 |
$realpath = Helper::realpath( $href, home_url() ); |
| 274 |
$path = substr( $realpath, strlen( ABSPATH ) - 1 ); |
| 275 |
$optimized_url = Helper::get_optimized_url( $path, true ); |
| 276 |
$new_tag = str_replace( $href, $optimized_url, $tag ); |
| 277 |
|
| 278 |
return $new_tag; |
| 279 |
} |
| 280 |
|
| 281 |
/** |
| 282 |
* Minify JS file |
| 283 |
* |
| 284 |
* @param string $tag script tag <script... |
| 285 |
* @param string $handle JS handle |
| 286 |
* @param string $src Resource URL |
| 287 |
* |
| 288 |
* @return mixed |
| 289 |
*/ |
| 290 |
public function js_minify( $tag, $handle, $src ) { |
| 291 |
if ( ! $this->settings['minify_js'] ) { |
| 292 |
return $tag; |
| 293 |
} |
| 294 |
|
| 295 |
/** |
| 296 |
* Filters whether disable or not disable JS minification. |
| 297 |
* |
| 298 |
* @hook powered_cache_fo_disable_js_minify |
| 299 |
* |
| 300 |
* @param {boolean} true to disable JS minify |
| 301 |
* |
| 302 |
* @return {boolean} New value. |
| 303 |
* @since 2.0 |
| 304 |
*/ |
| 305 |
if ( apply_filters( 'powered_cache_fo_disable_js_minify', false ) ) { |
| 306 |
return $tag; |
| 307 |
} |
| 308 |
|
| 309 |
// only minify static .css |
| 310 |
if ( false === strpos( $src, '.js' ) ) { |
| 311 |
return $tag; |
| 312 |
} |
| 313 |
|
| 314 |
// already minified |
| 315 |
if ( false !== strpos( $src, '.min' ) ) { |
| 316 |
return $tag; |
| 317 |
} |
| 318 |
|
| 319 |
// only minify local hosted |
| 320 |
if ( ! Helper::is_internal_url( $src, home_url() ) ) { |
| 321 |
return $tag; |
| 322 |
} |
| 323 |
|
| 324 |
// excluded explicitly |
| 325 |
if ( Helper::is_excluded_js( $src ) ) { |
| 326 |
return $tag; |
| 327 |
} |
| 328 |
|
| 329 |
$realpath = Helper::realpath( $src, home_url() ); |
| 330 |
$path = substr( $realpath, strlen( ABSPATH ) - 1 ); |
| 331 |
$optimized_url = Helper::get_optimized_url( $path, true ); |
| 332 |
$new_tag = str_replace( $src, $optimized_url, $tag ); |
| 333 |
|
| 334 |
return $new_tag; |
| 335 |
} |
| 336 |
|
| 337 |
|
| 338 |
/** |
| 339 |
* Setup JS concat |
| 340 |
*/ |
| 341 |
public function setup_js_combine() { |
| 342 |
if ( ! $this->settings['combine_js'] ) { |
| 343 |
return; |
| 344 |
} |
| 345 |
|
| 346 |
/** |
| 347 |
* Filters whether disable or not disable JS combine |
| 348 |
* |
| 349 |
* @hook powered_cache_fo_disable_js_combine |
| 350 |
* |
| 351 |
* @param {boolean} true to disable JS combine |
| 352 |
* |
| 353 |
* @return {boolean} New value. |
| 354 |
* @since 2.0 |
| 355 |
*/ |
| 356 |
if ( apply_filters( 'powered_cache_fo_disable_js_combine', false ) ) { |
| 357 |
return; |
| 358 |
} |
| 359 |
|
| 360 |
global $wp_scripts; |
| 361 |
|
| 362 |
$wp_scripts = new JS( $wp_scripts ); |
| 363 |
/** |
| 364 |
* Filters whether allow or not allow gzip compression for combined file names. |
| 365 |
* |
| 366 |
* @hook powered_cache_fo_allow_gzip_compression |
| 367 |
* |
| 368 |
* @param {boolean} true to enable gzip compression on filenames |
| 369 |
* |
| 370 |
* @return {boolean} New value. |
| 371 |
* @since 2.0 |
| 372 |
*/ |
| 373 |
$wp_scripts->allow_gzip_compression = apply_filters( 'powered_cache_fo_allow_gzip_compression', true ); |
| 374 |
$wp_scripts->do_minify = $this->settings['minify_js']; |
| 375 |
|
| 376 |
} |
| 377 |
|
| 378 |
/** |
| 379 |
* Setup CSS concat |
| 380 |
*/ |
| 381 |
public function setup_css_combine() { |
| 382 |
if ( ! $this->settings['combine_css'] ) { |
| 383 |
return; |
| 384 |
} |
| 385 |
|
| 386 |
/** |
| 387 |
* Filters whether disable or not disable CSS combine |
| 388 |
* |
| 389 |
* @hook powered_cache_fo_disable_css_combine |
| 390 |
* |
| 391 |
* @param {boolean} true to disable CSS combine |
| 392 |
* |
| 393 |
* @return {boolean} New value. |
| 394 |
* @since 2.0 |
| 395 |
*/ |
| 396 |
if ( apply_filters( 'powered_cache_fo_disable_css_combine', false ) ) { |
| 397 |
return; |
| 398 |
} |
| 399 |
|
| 400 |
global $wp_styles; |
| 401 |
|
| 402 |
$wp_styles = new CSS( $wp_styles ); |
| 403 |
$wp_styles->allow_gzip_compression = apply_filters( 'powered_cache_fo_allow_gzip_compression', true ); |
| 404 |
$wp_styles->do_minify = $this->settings['minify_css']; |
| 405 |
$wp_styles->enable_cdn = $this->settings['enable_cdn']; |
| 406 |
|
| 407 |
} |
| 408 |
|
| 409 |
/** |
| 410 |
* Combine google fonts |
| 411 |
* Derived from https://gist.github.com/eugenealegiojo/dbdd620a998458aa2eb1f124b2f0b18e |
| 412 |
*/ |
| 413 |
public function combine_google_fonts() { |
| 414 |
global $wp_styles; |
| 415 |
|
| 416 |
// Check for any enqueued `fonts.googleapis.com` from themes or plugins |
| 417 |
if ( isset( $wp_styles->queue ) ) { |
| 418 |
$google_fonts_domain = '//fonts.googleapis.com/css'; |
| 419 |
$enqueued_google_fonts = array(); |
| 420 |
$families = array(); |
| 421 |
$subsets = array(); |
| 422 |
$font_args = array(); |
| 423 |
$font_display = ''; |
| 424 |
|
| 425 |
// Collect all enqueued google fonts |
| 426 |
foreach ( $wp_styles->queue as $key => $handle ) { |
| 427 |
if ( ! isset( $wp_styles->registered[ $handle ] ) ) { |
| 428 |
continue; |
| 429 |
} |
| 430 |
|
| 431 |
$style_src = $wp_styles->registered[ $handle ]->src; |
| 432 |
|
| 433 |
if ( false !== strpos( $style_src, 'fonts.googleapis.com/css' ) ) { |
| 434 |
$url = wp_parse_url( $style_src ); |
| 435 |
|
| 436 |
if ( is_string( $url['query'] ) ) { |
| 437 |
parse_str( $url['query'], $parsed_url ); |
| 438 |
|
| 439 |
if ( isset( $parsed_url['family'] ) ) { |
| 440 |
// Collect all subsets |
| 441 |
if ( isset( $parsed_url['subset'] ) ) { |
| 442 |
$subsets[] = rawurlencode( trim( $parsed_url['subset'] ) ); |
| 443 |
} |
| 444 |
|
| 445 |
$font_families = explode( '|', $parsed_url['family'] ); |
| 446 |
foreach ( $font_families as $parsed_font ) { |
| 447 |
$get_font = explode( ':', $parsed_font ); |
| 448 |
|
| 449 |
// Extract the font data |
| 450 |
if ( isset( $get_font[0] ) && ! empty( $get_font[0] ) ) { |
| 451 |
$family = $get_font[0]; |
| 452 |
$weights = isset( $get_font[1] ) && ! empty( $get_font[1] ) ? explode( ',', $get_font[1] ) : array(); |
| 453 |
|
| 454 |
// Combine weights if family has been enqueued |
| 455 |
if ( isset( $enqueued_google_fonts[ $family ] ) && $weights !== $enqueued_google_fonts[ $family ]['weights'] ) { |
| 456 |
$combined_weights = array_merge( $weights, $enqueued_google_fonts[ $family ]['weights'] ); |
| 457 |
$enqueued_google_fonts[ $family ]['weights'] = array_unique( $combined_weights ); |
| 458 |
} else { |
| 459 |
$enqueued_google_fonts[ $family ] = array( |
| 460 |
'handle' => $handle, |
| 461 |
'family' => $family, |
| 462 |
'weights' => $weights, |
| 463 |
); |
| 464 |
|
| 465 |
if ( isset( $parsed_url['display'] ) ) { |
| 466 |
$font_display = $parsed_url['display']; |
| 467 |
} |
| 468 |
|
| 469 |
// Remove enqueued google font style, so we would only have one HTTP request. |
| 470 |
wp_dequeue_style( $handle ); |
| 471 |
} |
| 472 |
} |
| 473 |
} |
| 474 |
} |
| 475 |
} |
| 476 |
} |
| 477 |
} |
| 478 |
|
| 479 |
// Combine all queued fonts |
| 480 |
if ( count( $enqueued_google_fonts ) > 0 ) { |
| 481 |
foreach ( $enqueued_google_fonts as $family => $data ) { |
| 482 |
// Collect all family and weights |
| 483 |
if ( ! empty( $data['weights'] ) ) { |
| 484 |
$families[] = $family . ':' . implode( ',', $data['weights'] ); |
| 485 |
} else { |
| 486 |
$families[] = $family; |
| 487 |
} |
| 488 |
} |
| 489 |
|
| 490 |
if ( ! empty( $families ) ) { |
| 491 |
$font_args['family'] = implode( '|', $families ); |
| 492 |
|
| 493 |
if ( ! empty( $subsets ) ) { |
| 494 |
$font_args['subset'] = implode( ',', $subsets ); |
| 495 |
} |
| 496 |
|
| 497 |
/** |
| 498 |
* Filters font display attribute of the google fonts. |
| 499 |
* |
| 500 |
* @hook powered_cache_fo_google_font_display |
| 501 |
* |
| 502 |
* @param {string} $font_display font display attribute. |
| 503 |
* |
| 504 |
* @return {boolean} New value. |
| 505 |
* @since 2.0 |
| 506 |
*/ |
| 507 |
$font_display = apply_filters( 'powered_cache_fo_google_font_display', $font_display ); |
| 508 |
|
| 509 |
if ( ! empty( $font_display ) ) { |
| 510 |
$font_args['display'] = $font_display; |
| 511 |
} |
| 512 |
|
| 513 |
$src = esc_url_raw( add_query_arg( $font_args, $google_fonts_domain ) ); |
| 514 |
|
| 515 |
// Enqueue google fonts into one URL request |
| 516 |
wp_enqueue_style( // phpcs:ignore WordPress.WP.EnqueuedResourceParameters.MissingVersion |
| 517 |
'pc-google-fonts-' . md5( $src ), |
| 518 |
$src, |
| 519 |
array() |
| 520 |
); |
| 521 |
|
| 522 |
unset( $enqueued_google_fonts ); |
| 523 |
} |
| 524 |
} |
| 525 |
} |
| 526 |
} |
| 527 |
|
| 528 |
} |
| 529 |
|
