| 1 |
<?php |
| 2 |
/** |
| 3 |
* Class for JS optimization. |
| 4 |
*/ |
| 5 |
|
| 6 |
if ( ! defined( 'ABSPATH' ) ) { |
| 7 |
exit; |
| 8 |
} |
| 9 |
|
| 10 |
class autoptimizeScripts extends autoptimizeBase |
| 11 |
{ |
| 12 |
|
| 13 |
/** |
| 14 |
* Stores founds scripts. |
| 15 |
* |
| 16 |
* @var array |
| 17 |
*/ |
| 18 |
private $scripts = array(); |
| 19 |
|
| 20 |
/** |
| 21 |
* Stores to be moved JS. |
| 22 |
* |
| 23 |
* @var array |
| 24 |
*/ |
| 25 |
private $move = array( |
| 26 |
'first' => array(), |
| 27 |
'last' => array(), |
| 28 |
); |
| 29 |
|
| 30 |
/** |
| 31 |
* List of not to be moved JS. |
| 32 |
* |
| 33 |
* @var array |
| 34 |
*/ |
| 35 |
private $dontmove = array( |
| 36 |
'document.write', |
| 37 |
'html5.js', |
| 38 |
'show_ads.js', |
| 39 |
'google_ad', |
| 40 |
'histats.com/js', |
| 41 |
'statcounter.com/counter/counter.js', |
| 42 |
'ws.amazon.com/widgets', |
| 43 |
'media.fastclick.net', |
| 44 |
'/ads/', |
| 45 |
'comment-form-quicktags/quicktags.php', |
| 46 |
'edToolbar', |
| 47 |
'intensedebate.com', |
| 48 |
'scripts.chitika.net/', |
| 49 |
'_gaq.push', |
| 50 |
'jotform.com/', |
| 51 |
'admin-bar.min.js', |
| 52 |
'GoogleAnalyticsObject', |
| 53 |
'plupload.full.min.js', |
| 54 |
'syntaxhighlighter', |
| 55 |
'adsbygoogle', |
| 56 |
'gist.github.com', |
| 57 |
'_stq', |
| 58 |
'nonce', |
| 59 |
'post_id', |
| 60 |
'data-noptimize', |
| 61 |
'data-cfasync', |
| 62 |
'data-pagespeed-no-defer', |
| 63 |
'logHuman', |
| 64 |
'amp-mobile-version-switcher', |
| 65 |
'data-rocketlazyloadscript', |
| 66 |
'rocket-browser-checker-js-after', |
| 67 |
); |
| 68 |
|
| 69 |
/** |
| 70 |
* List of to be moved JS. |
| 71 |
* |
| 72 |
* @var array |
| 73 |
*/ |
| 74 |
private $domove = array( |
| 75 |
'gaJsHost', |
| 76 |
'load_cmc', |
| 77 |
'jd.gallery.transitions.js', |
| 78 |
'swfobject.embedSWF(', |
| 79 |
'tiny_mce.js', |
| 80 |
'tinyMCEPreInit.go', |
| 81 |
); |
| 82 |
|
| 83 |
/** |
| 84 |
* List of JS that can be moved last (not used any more). |
| 85 |
* |
| 86 |
* @var array |
| 87 |
*/ |
| 88 |
private $domovelast = array( |
| 89 |
'addthis.com', |
| 90 |
'/afsonline/show_afs_search.js', |
| 91 |
'disqus.js', |
| 92 |
'networkedblogs.com/getnetworkwidget', |
| 93 |
'infolinks.com/js/', |
| 94 |
'jd.gallery.js.php', |
| 95 |
'jd.gallery.transitions.js', |
| 96 |
'swfobject.embedSWF(', |
| 97 |
'linkwithin.com/widget.js', |
| 98 |
'tiny_mce.js', |
| 99 |
'tinyMCEPreInit.go', |
| 100 |
); |
| 101 |
|
| 102 |
/** |
| 103 |
* Setting CDN base URL. |
| 104 |
* |
| 105 |
* @var string |
| 106 |
*/ |
| 107 |
public $cdn_url = ''; |
| 108 |
|
| 109 |
/** |
| 110 |
* Setting; aggregate or not. |
| 111 |
* |
| 112 |
* @var bool |
| 113 |
*/ |
| 114 |
private $aggregate = true; |
| 115 |
|
| 116 |
/** |
| 117 |
* Setting; if not aggregated, should we defer? |
| 118 |
* |
| 119 |
* @var bool |
| 120 |
*/ |
| 121 |
private $defer_not_aggregate = false; |
| 122 |
|
| 123 |
/** |
| 124 |
* Setting; defer inline JS? |
| 125 |
* |
| 126 |
* @var bool |
| 127 |
*/ |
| 128 |
private $defer_inline = false; |
| 129 |
|
| 130 |
/** |
| 131 |
* Setting; try/catch wrapping or not. |
| 132 |
* |
| 133 |
* @var bool |
| 134 |
*/ |
| 135 |
private $trycatch = false; |
| 136 |
|
| 137 |
/** |
| 138 |
* State; is JS already minified. |
| 139 |
* |
| 140 |
* @var bool |
| 141 |
*/ |
| 142 |
private $alreadyminified = false; |
| 143 |
|
| 144 |
/** |
| 145 |
* Setting; force JS in head or not. |
| 146 |
* |
| 147 |
* @var bool |
| 148 |
*/ |
| 149 |
private $forcehead = true; |
| 150 |
|
| 151 |
/** |
| 152 |
* Setting; aggregate inline JS or not. |
| 153 |
* |
| 154 |
* @var bool |
| 155 |
*/ |
| 156 |
private $include_inline = false; |
| 157 |
|
| 158 |
/** |
| 159 |
* State; holds JS code. |
| 160 |
* |
| 161 |
* @var string |
| 162 |
*/ |
| 163 |
private $jscode = ''; |
| 164 |
|
| 165 |
/** |
| 166 |
* State; holds URL of JS-file. |
| 167 |
* |
| 168 |
* @var string |
| 169 |
*/ |
| 170 |
private $url = ''; |
| 171 |
|
| 172 |
/** |
| 173 |
* State; stores rest of HTML if (old) option "only in head" is on. |
| 174 |
* |
| 175 |
* @var string |
| 176 |
*/ |
| 177 |
private $restofcontent = ''; |
| 178 |
|
| 179 |
/** |
| 180 |
* State; holds md5-hash. |
| 181 |
* |
| 182 |
* @var string |
| 183 |
*/ |
| 184 |
private $md5hash = ''; |
| 185 |
|
| 186 |
/** |
| 187 |
* Setting (filter); allowlist of to be aggregated JS. |
| 188 |
* |
| 189 |
* @var string |
| 190 |
*/ |
| 191 |
private $allowlist = ''; |
| 192 |
|
| 193 |
/** |
| 194 |
* Setting (filter); holds JS that should be removed. |
| 195 |
* |
| 196 |
* @var array |
| 197 |
*/ |
| 198 |
private $jsremovables = array(); |
| 199 |
|
| 200 |
/** |
| 201 |
* Setting (filter); can we inject already minified files after the |
| 202 |
* unminified aggregate JS has been minified. |
| 203 |
* |
| 204 |
* @var bool |
| 205 |
*/ |
| 206 |
private $inject_min_late = true; |
| 207 |
|
| 208 |
/** |
| 209 |
* Setting; should excluded JS be minified (if not already). |
| 210 |
* |
| 211 |
* @var bool |
| 212 |
*/ |
| 213 |
private $minify_excluded = true; |
| 214 |
|
| 215 |
/** |
| 216 |
* Reads the page and collects script tags. |
| 217 |
* |
| 218 |
* @param array $options all options. |
| 219 |
*/ |
| 220 |
public function read( $options ) |
| 221 |
{ |
| 222 |
$noptimize_js = false; |
| 223 |
|
| 224 |
// If page/ post check post_meta to see if optimize is off. |
| 225 |
if ( false === autoptimizeConfig::get_post_meta_ao_settings( 'ao_post_js_optimize' ) ) { |
| 226 |
$noptimize_js = true; |
| 227 |
} |
| 228 |
|
| 229 |
// And a filter to enforce JS noptimize. |
| 230 |
$noptimize_js = apply_filters( 'autoptimize_filter_js_noptimize', $noptimize_js, $this->content ); |
| 231 |
|
| 232 |
// And finally bail if noptimize_js is true. |
| 233 |
if ( $noptimize_js ) { |
| 234 |
return false; |
| 235 |
} |
| 236 |
|
| 237 |
// only optimize known good JS? |
| 238 |
$allowlist_js = apply_filters( 'autoptimize_filter_js_allowlist', '', $this->content ); |
| 239 |
if ( ! empty( $allowlist_js ) ) { |
| 240 |
$this->allowlist = array_filter( array_map( 'trim', explode( ',', $allowlist_js ) ) ); |
| 241 |
} |
| 242 |
|
| 243 |
// is there JS we should simply remove? |
| 244 |
$removable_js = apply_filters( 'autoptimize_filter_js_removables', '', $this->content ); |
| 245 |
if ( ! empty( $removable_js ) ) { |
| 246 |
$this->jsremovables = array_filter( array_map( 'trim', explode( ',', $removable_js ) ) ); |
| 247 |
} |
| 248 |
|
| 249 |
// only header? |
| 250 |
if ( apply_filters( 'autoptimize_filter_js_justhead', $options['justhead'] ) ) { |
| 251 |
$content = explode( '</head>', $this->content, 2 ); |
| 252 |
$this->content = $content[0] . '</head>'; |
| 253 |
$this->restofcontent = $content[1]; |
| 254 |
} |
| 255 |
|
| 256 |
// Determine whether we're doing JS-files aggregation or not. |
| 257 |
if ( ! $options['aggregate'] ) { |
| 258 |
$this->aggregate = false; |
| 259 |
} |
| 260 |
// Returning true for "dontaggregate" turns off aggregation. |
| 261 |
if ( $this->aggregate && apply_filters( 'autoptimize_filter_js_dontaggregate', false ) ) { |
| 262 |
$this->aggregate = false; |
| 263 |
} |
| 264 |
// and the filter that should have been there to begin with. |
| 265 |
$this->aggregate = apply_filters( 'autoptimize_filter_js_aggregate', $this->aggregate ); |
| 266 |
|
| 267 |
// Defer when not aggregating. |
| 268 |
if ( false === $this->aggregate && apply_filters( 'autoptimize_filter_js_defer_not_aggregate', $options['defer_not_aggregate'] ) ) { |
| 269 |
$this->defer_not_aggregate = true; |
| 270 |
} |
| 271 |
|
| 272 |
// Defer inline JS? |
| 273 |
if ( ( true === $this->defer_not_aggregate && apply_filters( 'autoptimize_js_filter_defer_inline', $options['defer_inline'] ) ) || apply_filters( 'autoptimize_js_filter_force_defer_inline', false ) ) { |
| 274 |
$this->defer_inline = true; |
| 275 |
} |
| 276 |
|
| 277 |
// include inline? |
| 278 |
if ( apply_filters( 'autoptimize_js_include_inline', $options['include_inline'] ) ) { |
| 279 |
$this->include_inline = true; |
| 280 |
} |
| 281 |
|
| 282 |
// filter to "late inject minified JS", default to true for now (it is faster). |
| 283 |
$this->inject_min_late = apply_filters( 'autoptimize_filter_js_inject_min_late', true ); |
| 284 |
|
| 285 |
// filters to override hardcoded do(nt)move(last) array contents (array in, array out!). |
| 286 |
$this->dontmove = apply_filters( 'autoptimize_filter_js_dontmove', $this->dontmove ); |
| 287 |
$this->domovelast = apply_filters( 'autoptimize_filter_js_movelast', $this->domovelast ); |
| 288 |
$this->domove = apply_filters( 'autoptimize_filter_js_domove', $this->domove ); |
| 289 |
|
| 290 |
// Determine whether excluded files should be minified if not yet so. |
| 291 |
if ( ! $options['minify_excluded'] && $options['aggregate'] ) { |
| 292 |
$this->minify_excluded = false; |
| 293 |
} |
| 294 |
$this->minify_excluded = apply_filters( 'autoptimize_filter_js_minify_excluded', $this->minify_excluded, '' ); |
| 295 |
|
| 296 |
// get extra exclusions settings or filter. |
| 297 |
$exclude_js = $options['js_exclude']; |
| 298 |
$exclude_js = apply_filters( 'autoptimize_filter_js_exclude', $exclude_js, $this->content ); |
| 299 |
|
| 300 |
if ( '' !== $exclude_js ) { |
| 301 |
if ( is_array( $exclude_js ) ) { |
| 302 |
$remove_keys = array_keys( $exclude_js, 'remove' ); |
| 303 |
if ( false !== $remove_keys ) { |
| 304 |
foreach ( $remove_keys as $remove_key ) { |
| 305 |
unset( $exclude_js[ $remove_key ] ); |
| 306 |
$this->jsremovables[] = $remove_key; |
| 307 |
} |
| 308 |
} |
| 309 |
$excl_js_arr = array_keys( $exclude_js ); |
| 310 |
} else { |
| 311 |
$excl_js_arr = array_filter( array_map( 'trim', explode( ',', $exclude_js ) ) ); |
| 312 |
} |
| 313 |
$this->dontmove = array_merge( $excl_js_arr, $this->dontmove ); |
| 314 |
} |
| 315 |
|
| 316 |
// Should we add try-catch? |
| 317 |
if ( $options['trycatch'] ) { |
| 318 |
$this->trycatch = true; |
| 319 |
} |
| 320 |
|
| 321 |
// force js in head? |
| 322 |
if ( $options['forcehead'] ) { |
| 323 |
$this->forcehead = true; |
| 324 |
} else { |
| 325 |
$this->forcehead = false; |
| 326 |
} |
| 327 |
|
| 328 |
$this->forcehead = apply_filters( 'autoptimize_filter_js_forcehead', $this->forcehead ); |
| 329 |
|
| 330 |
// get cdn url. |
| 331 |
$this->cdn_url = $options['cdn_url']; |
| 332 |
|
| 333 |
// noptimize me. |
| 334 |
$this->content = $this->hide_noptimize( $this->content ); |
| 335 |
|
| 336 |
// Save IE hacks. |
| 337 |
$this->content = $this->hide_iehacks( $this->content ); |
| 338 |
|
| 339 |
// comments. |
| 340 |
$this->content = $this->hide_comments( $this->content ); |
| 341 |
|
| 342 |
// Get script files. |
| 343 |
if ( preg_match_all( '#<script.*</script>#Usmi', $this->content, $matches ) ) { |
| 344 |
foreach ( $matches[0] as $tag ) { |
| 345 |
// only consider script aggregation for types allowlisted in should_aggregate-function. |
| 346 |
$should_aggregate = $this->should_aggregate( $tag ); |
| 347 |
if ( ! $should_aggregate ) { |
| 348 |
$tag = ''; |
| 349 |
continue; |
| 350 |
} |
| 351 |
|
| 352 |
if ( preg_match( '#<script[^>]*src=("|\')([^>]*)("|\')#Usmi', $tag, $source ) ) { |
| 353 |
// non-inline script. |
| 354 |
if ( $this->isremovable( $tag, $this->jsremovables ) ) { |
| 355 |
$this->content = str_replace( $tag, '', $this->content ); |
| 356 |
continue; |
| 357 |
} |
| 358 |
|
| 359 |
$orig_tag = null; |
| 360 |
$url = current( explode( '?', $source[2], 2 ) ); |
| 361 |
$path = $this->getpath( $url ); |
| 362 |
if ( false !== $path && preg_match( '#\.js$#', $path ) && $this->ismergeable( $tag ) ) { |
| 363 |
// ok to optimize, add to array. |
| 364 |
$this->scripts[] = $path; |
| 365 |
} else { |
| 366 |
$orig_tag = $tag; |
| 367 |
$new_tag = $tag; |
| 368 |
|
| 369 |
// non-mergeable script (excluded or dynamic or external). |
| 370 |
if ( is_array( $exclude_js ) ) { |
| 371 |
// should we add flags? |
| 372 |
foreach ( $exclude_js as $excl_tag => $excl_flags ) { |
| 373 |
if ( false !== strpos( $orig_tag, $excl_tag ) && in_array( $excl_flags, array( 'async', 'defer' ) ) ) { |
| 374 |
$new_tag = str_replace( '<script ', '<script ' . $excl_flags . ' ', $new_tag ); |
| 375 |
} |
| 376 |
} |
| 377 |
} |
| 378 |
|
| 379 |
// not aggregating but deferring? |
| 380 |
if ( $this->defer_not_aggregate && false === $this->aggregate && ( str_replace( $this->dontmove, '', $path ) === $path || ( apply_filters( 'autoptimize_filter_js_defer_external', true ) && str_replace( $this->dontmove, '', $orig_tag ) === $orig_tag ) ) && strpos( $new_tag, ' defer' ) === false ) { |
| 381 |
if ( false !== strpos( $new_tag, ' async' ) && true === apply_filters( 'autoptimize_filter_js_defer_trumps_async', true ) ) { |
| 382 |
// remove async flag to ensure JS is properly deferred, otherwise the asynced JS might fire |
| 383 |
// before deferred inlined JS is executed, off course except filter is set to false which |
| 384 |
// re-institutes previous behavior. |
| 385 |
$new_tag = str_replace( array( " async='async'", ' async="async"', ' async=async', ' async' ), '', $new_tag ); |
| 386 |
} |
| 387 |
|
| 388 |
if ( false === strpos( $new_tag, ' async' ) ) { |
| 389 |
// either async wasn't there to begin with or it was removed. |
| 390 |
// if async is there, the autoptimize_filter_js_defer_trumps_async |
| 391 |
// filter was set to false and in that case defer should not be added. |
| 392 |
$new_tag = str_replace( '<script ', '<script defer ', $new_tag ); |
| 393 |
} |
| 394 |
} |
| 395 |
|
| 396 |
// Should we minify the non-aggregated script? |
| 397 |
// -> if aggregate is on and exclude minify is on |
| 398 |
// -> if aggregate is off and the file is not in dontmove. |
| 399 |
if ( $path && $this->minify_excluded ) { |
| 400 |
$consider_minified_array = apply_filters( 'autoptimize_filter_js_consider_minified', false ); |
| 401 |
if ( ( false === $this->aggregate && str_replace( $this->dontmove, '', $path ) === $path ) || ( true === $this->aggregate && ( false === $consider_minified_array || str_replace( $consider_minified_array, '', $path ) === $path ) ) ) { |
| 402 |
$minified_url = $this->minify_single( $path ); |
| 403 |
if ( ! empty( $minified_url ) ) { |
| 404 |
// Replace original URL with minified URL from cache. |
| 405 |
$new_tag = str_replace( $url, $minified_url, $new_tag ); |
| 406 |
} elseif ( apply_filters( 'autoptimize_filter_ccsjs_remove_empty_minified_url', false ) ) { |
| 407 |
// Remove the original script tag, because cache content is empty but only if filter |
| 408 |
// is trued because $minified_url is also false if original JS is minified already. |
| 409 |
$new_tag = ''; |
| 410 |
} |
| 411 |
} |
| 412 |
} |
| 413 |
|
| 414 |
// Check if we still need to CDN (esp. for already minified resources). |
| 415 |
if ( ! empty( $this->cdn_url ) || has_filter( 'autoptimize_filter_base_replace_cdn' ) ) { |
| 416 |
$new_tag = str_replace( $url, $this->url_replace_cdn( $url ), $new_tag ); |
| 417 |
} |
| 418 |
|
| 419 |
if ( $this->ismovable( $new_tag ) ) { |
| 420 |
// can be moved, flags and all. |
| 421 |
if ( $this->movetolast( $new_tag ) ) { |
| 422 |
$this->move['last'][] = $new_tag; |
| 423 |
} else { |
| 424 |
$this->move['first'][] = $new_tag; |
| 425 |
} |
| 426 |
} else { |
| 427 |
// cannot be moved, so if flag was added re-inject altered tag immediately. |
| 428 |
if ( ( '' !== $new_tag && $orig_tag !== $new_tag ) || ( '' === $new_tag && apply_filters( 'autoptimize_filter_js_remove_empty_files', false ) ) ) { |
| 429 |
$this->content = str_replace( $orig_tag, $new_tag, $this->content ); |
| 430 |
$orig_tag = ''; |
| 431 |
} |
| 432 |
// and forget about the $tag (not to be touched any more). |
| 433 |
$tag = ''; |
| 434 |
} |
| 435 |
} |
| 436 |
} else { |
| 437 |
// Inline script. |
| 438 |
if ( $this->isremovable( $tag, $this->jsremovables ) ) { |
| 439 |
$this->content = str_replace( $tag, '', $this->content ); |
| 440 |
continue; |
| 441 |
} |
| 442 |
|
| 443 |
// unhide comments, as javascript may be wrapped in comment-tags for old times' sake. |
| 444 |
$tag = $this->restore_comments( $tag ); |
| 445 |
if ( $this->ismergeable( $tag ) && $this->include_inline ) { |
| 446 |
preg_match( '#<script.*>(.*)</script>#Usmi', $tag, $code ); |
| 447 |
$code = preg_replace( '#.*<!\[CDATA\[(?:\s*\*/)?(.*)(?://|/\*)\s*?\]\]>.*#sm', '$1', $code[1] ); |
| 448 |
$code = preg_replace( '/(?:^\\s*<!--\\s*|\\s*(?:\\/\\/)?\\s*-->\\s*$)/', '', $code ); |
| 449 |
$this->scripts[] = 'INLINE;' . $code; |
| 450 |
} else { |
| 451 |
$_inline_deferable = apply_filters( 'autoptimize_filters_js_inline_deferable', array( 'nonce', 'post_id', 'syntaxhighlighter' ) ); |
| 452 |
$_inline_dontmove = array_values( array_diff( $this->dontmove, $_inline_deferable ) ); |
| 453 |
if ( false === $this->defer_inline ) { |
| 454 |
// Can we move this? |
| 455 |
$autoptimize_js_moveable = apply_filters( 'autoptimize_js_moveable', '', $tag ); |
| 456 |
if ( $this->ismovable( $tag ) || '' !== $autoptimize_js_moveable ) { |
| 457 |
if ( $this->movetolast( $tag ) || 'last' === $autoptimize_js_moveable ) { |
| 458 |
$this->move['last'][] = $tag; |
| 459 |
} else { |
| 460 |
$this->move['first'][] = $tag; |
| 461 |
} |
| 462 |
} else { |
| 463 |
$tag = ''; |
| 464 |
} |
| 465 |
} else if ( str_replace( $_inline_dontmove, '', $tag ) === $tag && strlen( $tag ) < apply_filters( 'autoptimize_filter_script_defer_inline_maxsize', 200000 ) ) { |
| 466 |
// defer inline JS by base64 encoding it but only if string is not ridiculously huge (to avoid issues with below regex mainly). |
| 467 |
preg_match( '#<script(?:[^>](?!id=))*\s*(?:id=(["\'])([^"\']+)\1)*+[^>]*+>(.*?)<\/script>#is', $tag, $match ); |
| 468 |
if ( $match[2] ) { |
| 469 |
$_id = 'id="' . $match[2] . '" '; |
| 470 |
} else { |
| 471 |
$_id = ''; |
| 472 |
} |
| 473 |
|
| 474 |
// if "minify inline" is on and if more then 9 spaces or 4 line breaks are found |
| 475 |
// in the inline JS then it is likely not minified, so minify before base64-encoding. |
| 476 |
$_script_contents = $match[3]; |
| 477 |
if ( 'on' === autoptimizeOptionWrapper::get_option( 'autoptimize_html_minify_inline', 'off' ) && substr_count( $_script_contents, ' ' ) > 9 && substr_count( $_script_contents, "\n" ) > 4 && true === apply_filters( 'autoptimize_filter_script_defer_inline_minify', true ) ) { |
| 478 |
$_tmp_script_contents = trim( JSMin::minify( $_script_contents ) ); |
| 479 |
if ( ! empty( $_tmp_script_contents ) ) { |
| 480 |
$_script_contents = $_tmp_script_contents; |
| 481 |
} |
| 482 |
} |
| 483 |
|
| 484 |
// base64 and defer the lot already. |
| 485 |
$new_tag = '<script defer ' . $_id . 'src="data:text/javascript;base64,' . base64_encode( $_script_contents ) . '"></script>'; |
| 486 |
$this->content = str_replace( $this->hide_comments( $tag ), $new_tag, $this->content ); |
| 487 |
$tag = ''; |
| 488 |
} else { |
| 489 |
$tag = ''; |
| 490 |
} |
| 491 |
} |
| 492 |
// Re-hide comments to be able to do the removal based on tag from $this->content. |
| 493 |
$tag = $this->hide_comments( $tag ); |
| 494 |
} |
| 495 |
|
| 496 |
// Remove the original script tag. |
| 497 |
$this->content = str_replace( $tag, '', $this->content ); |
| 498 |
} |
| 499 |
|
| 500 |
return true; |
| 501 |
} |
| 502 |
|
| 503 |
// No script files, great ;-) . |
| 504 |
return false; |
| 505 |
} |
| 506 |
|
| 507 |
/** |
| 508 |
* Determines wheter a certain `<script>` $tag should be aggregated or not. |
| 509 |
* |
| 510 |
* We consider these as "aggregation-safe" currently: |
| 511 |
* - script tags without a `type` attribute |
| 512 |
* - script tags with these `type` attribute values: `text/javascript`, `text/ecmascript`, `application/javascript`, |
| 513 |
* and `application/ecmascript` |
| 514 |
* |
| 515 |
* Everything else should return false. |
| 516 |
* |
| 517 |
* @link https://developer.mozilla.org/en/docs/Web/HTML/Element/script#attr-type |
| 518 |
* |
| 519 |
* @param string $tag Script node & child(ren). |
| 520 |
* @return bool |
| 521 |
*/ |
| 522 |
public static function should_aggregate( $tag ) |
| 523 |
{ |
| 524 |
if ( empty( $tag ) ) { |
| 525 |
return false; |
| 526 |
} |
| 527 |
|
| 528 |
// We're only interested in the type attribute of the <script> tag itself, not any possible |
| 529 |
// inline code that might just contain the 'type=' string... |
| 530 |
$tag_parts = array(); |
| 531 |
preg_match( '#<(script[^>]*)>#i', $tag, $tag_parts ); |
| 532 |
$tag_without_contents = null; |
| 533 |
if ( ! empty( $tag_parts[1] ) ) { |
| 534 |
$tag_without_contents = $tag_parts[1]; |
| 535 |
} |
| 536 |
|
| 537 |
$has_type = ( strpos( $tag_without_contents, 'type' ) !== false ); |
| 538 |
|
| 539 |
$type_valid = false; |
| 540 |
if ( $has_type ) { |
| 541 |
$type_valid = (bool) preg_match( '/type\s*=\s*[\'"]?(?:text|application)\/(?:javascript|ecmascript)[\'"]?/i', $tag_without_contents ); |
| 542 |
} |
| 543 |
|
| 544 |
$should_aggregate = false; |
| 545 |
if ( ! $has_type || $type_valid ) { |
| 546 |
$should_aggregate = true; |
| 547 |
} |
| 548 |
|
| 549 |
return $should_aggregate; |
| 550 |
} |
| 551 |
|
| 552 |
/** |
| 553 |
* Joins and optimizes JS. |
| 554 |
*/ |
| 555 |
public function minify() |
| 556 |
{ |
| 557 |
foreach ( $this->scripts as $script ) { |
| 558 |
if ( empty( $script ) ) { |
| 559 |
continue; |
| 560 |
} |
| 561 |
|
| 562 |
// TODO/FIXME: some duplicate code here, can be reduced/simplified. |
| 563 |
if ( preg_match( '#^INLINE;#', $script ) ) { |
| 564 |
// Inline script. |
| 565 |
$script = preg_replace( '#^INLINE;#', '', $script ); |
| 566 |
$script = rtrim( $script, ";\n\t\r" ) . ';'; |
| 567 |
// Add try-catch? |
| 568 |
if ( $this->trycatch ) { |
| 569 |
$script = 'try{' . $script . '}catch(e){}'; |
| 570 |
} |
| 571 |
$tmpscript = apply_filters( 'autoptimize_js_individual_script', $script, '' ); |
| 572 |
if ( has_filter( 'autoptimize_js_individual_script' ) && ! empty( $tmpscript ) ) { |
| 573 |
$script = $tmpscript; |
| 574 |
$this->alreadyminified = true; |
| 575 |
} |
| 576 |
$this->jscode .= "\n" . $script; |
| 577 |
} else { |
| 578 |
// External script. |
| 579 |
if ( false !== $script && file_exists( $script ) && is_readable( $script ) ) { |
| 580 |
$scriptsrc = file_get_contents( $script ); |
| 581 |
$scriptsrc = preg_replace( '/\x{EF}\x{BB}\x{BF}/', '', $scriptsrc ); |
| 582 |
$scriptsrc = rtrim( $scriptsrc, ";\n\t\r" ) . ';'; |
| 583 |
// Add try-catch? |
| 584 |
if ( $this->trycatch ) { |
| 585 |
$scriptsrc = 'try{' . $scriptsrc . '}catch(e){}'; |
| 586 |
} |
| 587 |
$tmpscriptsrc = apply_filters( 'autoptimize_js_individual_script', $scriptsrc, $script ); |
| 588 |
if ( has_filter( 'autoptimize_js_individual_script' ) && ! empty( $tmpscriptsrc ) ) { |
| 589 |
$scriptsrc = $tmpscriptsrc; |
| 590 |
$this->alreadyminified = true; |
| 591 |
} elseif ( $this->can_inject_late( $script ) ) { |
| 592 |
$scriptsrc = self::build_injectlater_marker( $script, md5( $scriptsrc ) ); |
| 593 |
} |
| 594 |
$this->jscode .= "\n" . $scriptsrc; |
| 595 |
} |
| 596 |
} |
| 597 |
} |
| 598 |
|
| 599 |
// Check for already-minified code. |
| 600 |
$this->md5hash = md5( $this->jscode ); |
| 601 |
$ccheck = new autoptimizeCache( $this->md5hash, 'js' ); |
| 602 |
if ( $ccheck->check() ) { |
| 603 |
$this->jscode = $ccheck->retrieve(); |
| 604 |
return true; |
| 605 |
} |
| 606 |
unset( $ccheck ); |
| 607 |
|
| 608 |
// $this->jscode has all the uncompressed code now. |
| 609 |
if ( true !== $this->alreadyminified ) { |
| 610 |
if ( apply_filters( 'autoptimize_js_do_minify', true ) ) { |
| 611 |
$tmp_jscode = trim( JSMin::minify( $this->jscode ) ); |
| 612 |
if ( ! empty( $tmp_jscode ) ) { |
| 613 |
$this->jscode = $tmp_jscode; |
| 614 |
unset( $tmp_jscode ); |
| 615 |
} |
| 616 |
$this->jscode = $this->inject_minified( $this->jscode ); |
| 617 |
$this->jscode = apply_filters( 'autoptimize_js_after_minify', $this->jscode ); |
| 618 |
return true; |
| 619 |
} else { |
| 620 |
$this->jscode = $this->inject_minified( $this->jscode ); |
| 621 |
return false; |
| 622 |
} |
| 623 |
} |
| 624 |
|
| 625 |
$this->jscode = apply_filters( 'autoptimize_js_after_minify', $this->jscode ); |
| 626 |
return true; |
| 627 |
} |
| 628 |
|
| 629 |
/** |
| 630 |
* Caches the JS in uncompressed, deflated and gzipped form. |
| 631 |
*/ |
| 632 |
public function cache() |
| 633 |
{ |
| 634 |
$cache = new autoptimizeCache( $this->md5hash, 'js' ); |
| 635 |
if ( ! $cache->check() ) { |
| 636 |
// Cache our code. |
| 637 |
$cache->cache( $this->jscode, 'text/javascript' ); |
| 638 |
} |
| 639 |
$this->url = AUTOPTIMIZE_CACHE_URL . $cache->getname(); |
| 640 |
$this->url = $this->url_replace_cdn( $this->url ); |
| 641 |
} |
| 642 |
|
| 643 |
/** |
| 644 |
* Returns the content. |
| 645 |
*/ |
| 646 |
public function getcontent() |
| 647 |
{ |
| 648 |
// Restore the full content. |
| 649 |
if ( ! empty( $this->restofcontent ) ) { |
| 650 |
$this->content .= $this->restofcontent; |
| 651 |
$this->restofcontent = ''; |
| 652 |
} |
| 653 |
|
| 654 |
// Add the scripts taking forcehead/ deferred (default) into account. |
| 655 |
if ( $this->forcehead ) { |
| 656 |
$replace_tag = array( '</head>', 'before' ); |
| 657 |
$defer = ''; |
| 658 |
} else { |
| 659 |
$replace_tag = array( '</body>', 'before' ); |
| 660 |
$defer = 'defer '; |
| 661 |
} |
| 662 |
|
| 663 |
$defer = apply_filters( 'autoptimize_filter_js_defer', $defer ); |
| 664 |
$type_js = ''; |
| 665 |
if ( apply_filters( 'autoptimize_filter_cssjs_addtype', false ) ) { |
| 666 |
$type_js = 'type="text/javascript" '; |
| 667 |
} |
| 668 |
|
| 669 |
$bodyreplacementpayload = '<script ' . $type_js . $defer . 'src="' . $this->url . '"></script>'; |
| 670 |
$bodyreplacementpayload = apply_filters( 'autoptimize_filter_js_bodyreplacementpayload', $bodyreplacementpayload ); |
| 671 |
|
| 672 |
$bodyreplacement = implode( '', $this->move['first'] ); |
| 673 |
$bodyreplacement .= $bodyreplacementpayload; |
| 674 |
$bodyreplacement .= implode( '', $this->move['last'] ); |
| 675 |
|
| 676 |
$replace_tag = apply_filters( 'autoptimize_filter_js_replacetag', $replace_tag ); |
| 677 |
|
| 678 |
if ( strlen( $this->jscode ) > 0 ) { |
| 679 |
$this->inject_in_html( $bodyreplacement, $replace_tag ); |
| 680 |
} |
| 681 |
|
| 682 |
// Restore comments. |
| 683 |
$this->content = $this->restore_comments( $this->content ); |
| 684 |
|
| 685 |
// Restore IE hacks. |
| 686 |
$this->content = $this->restore_iehacks( $this->content ); |
| 687 |
|
| 688 |
// Restore noptimize. |
| 689 |
$this->content = $this->restore_noptimize( $this->content ); |
| 690 |
|
| 691 |
// Return the modified HTML. |
| 692 |
return $this->content; |
| 693 |
} |
| 694 |
|
| 695 |
/** |
| 696 |
* Checks against the allow- and blocklists. |
| 697 |
* |
| 698 |
* @param string $tag JS tag. |
| 699 |
*/ |
| 700 |
private function ismergeable( $tag ) |
| 701 |
{ |
| 702 |
if ( empty( $tag ) || ! $this->aggregate ) { |
| 703 |
return false; |
| 704 |
} |
| 705 |
|
| 706 |
if ( ! empty( $this->allowlist ) ) { |
| 707 |
foreach ( $this->allowlist as $match ) { |
| 708 |
if ( false !== strpos( $tag, $match ) ) { |
| 709 |
return true; |
| 710 |
} |
| 711 |
} |
| 712 |
// No match with allowlist. |
| 713 |
return false; |
| 714 |
} else { |
| 715 |
foreach ( $this->domove as $match ) { |
| 716 |
if ( false !== strpos( $tag, $match ) ) { |
| 717 |
// Matched something. |
| 718 |
return false; |
| 719 |
} |
| 720 |
} |
| 721 |
|
| 722 |
if ( $this->movetolast( $tag ) ) { |
| 723 |
return false; |
| 724 |
} |
| 725 |
|
| 726 |
foreach ( $this->dontmove as $match ) { |
| 727 |
if ( false !== strpos( $tag, $match ) ) { |
| 728 |
// Matched something. |
| 729 |
return false; |
| 730 |
} |
| 731 |
} |
| 732 |
|
| 733 |
// If we're here it's safe to merge. |
| 734 |
return true; |
| 735 |
} |
| 736 |
} |
| 737 |
|
| 738 |
/** |
| 739 |
* Checks agains the blocklist. |
| 740 |
* |
| 741 |
* @param string $tag tag to check for blocklist (exclusions). |
| 742 |
*/ |
| 743 |
private function ismovable( $tag ) |
| 744 |
{ |
| 745 |
if ( empty( $tag ) || true !== $this->include_inline || apply_filters( 'autoptimize_filter_js_unmovable', true ) ) { |
| 746 |
return false; |
| 747 |
} |
| 748 |
|
| 749 |
foreach ( $this->domove as $match ) { |
| 750 |
if ( false !== strpos( $tag, $match ) ) { |
| 751 |
// Matched something. |
| 752 |
return true; |
| 753 |
} |
| 754 |
} |
| 755 |
|
| 756 |
if ( $this->movetolast( $tag ) ) { |
| 757 |
return true; |
| 758 |
} |
| 759 |
|
| 760 |
foreach ( $this->dontmove as $match ) { |
| 761 |
if ( false !== strpos( $tag, $match ) ) { |
| 762 |
// Matched something. |
| 763 |
return false; |
| 764 |
} |
| 765 |
} |
| 766 |
|
| 767 |
// If we're here it's safe to move. |
| 768 |
return true; |
| 769 |
} |
| 770 |
|
| 771 |
private function movetolast( $tag ) |
| 772 |
{ |
| 773 |
if ( empty( $tag ) ) { |
| 774 |
return false; |
| 775 |
} |
| 776 |
|
| 777 |
foreach ( $this->domovelast as $match ) { |
| 778 |
if ( false !== strpos( $tag, $match ) ) { |
| 779 |
// Matched, return true. |
| 780 |
return true; |
| 781 |
} |
| 782 |
} |
| 783 |
|
| 784 |
// Should be in 'first'. |
| 785 |
return false; |
| 786 |
} |
| 787 |
|
| 788 |
/** |
| 789 |
* Determines wheter a <script> $tag can be excluded from minification (as already minified) based on: |
| 790 |
* - inject_min_late being active |
| 791 |
* - filename ending in `min.js` |
| 792 |
* - filename matching one passed in the consider minified filter |
| 793 |
* |
| 794 |
* @param string $js_path Path to JS file. |
| 795 |
* @return bool |
| 796 |
*/ |
| 797 |
private function can_inject_late( $js_path ) { |
| 798 |
$consider_minified_array = apply_filters( 'autoptimize_filter_js_consider_minified', false ); |
| 799 |
if ( true !== $this->inject_min_late ) { |
| 800 |
// late-inject turned off. |
| 801 |
return false; |
| 802 |
} elseif ( ( false === strpos( $js_path, 'min.js' ) ) && ( str_replace( $consider_minified_array, '', $js_path ) === $js_path ) ) { |
| 803 |
// file not minified based on filename & filter. |
| 804 |
return false; |
| 805 |
} else { |
| 806 |
// phew, all is safe, we can late-inject. |
| 807 |
return true; |
| 808 |
} |
| 809 |
} |
| 810 |
|
| 811 |
/** |
| 812 |
* Returns whether we're doing aggregation or not. |
| 813 |
* |
| 814 |
* @return bool |
| 815 |
*/ |
| 816 |
public function aggregating() |
| 817 |
{ |
| 818 |
return $this->aggregate; |
| 819 |
} |
| 820 |
|
| 821 |
/** |
| 822 |
* Minifies a single local js file and returns its (cached) url. |
| 823 |
* |
| 824 |
* @param string $filepath Filepath. |
| 825 |
* @param bool $cache_miss Optional. Force a cache miss. Default false. |
| 826 |
* |
| 827 |
* @return bool|string Url pointing to the minified js file or false. |
| 828 |
*/ |
| 829 |
public function minify_single( $filepath, $cache_miss = false ) |
| 830 |
{ |
| 831 |
$contents = $this->prepare_minify_single( $filepath ); |
| 832 |
|
| 833 |
if ( empty( $contents ) ) { |
| 834 |
return false; |
| 835 |
} |
| 836 |
|
| 837 |
// Check cache. |
| 838 |
$hash = 'single_' . md5( $contents ); |
| 839 |
$cache = new autoptimizeCache( $hash, 'js' ); |
| 840 |
|
| 841 |
// If not in cache already, minify... |
| 842 |
if ( ! $cache->check() || $cache_miss ) { |
| 843 |
$contents = trim( JSMin::minify( $contents ) ); |
| 844 |
|
| 845 |
// Check if minified cache content is empty. |
| 846 |
if ( empty( $contents ) ) { |
| 847 |
return false; |
| 848 |
} |
| 849 |
|
| 850 |
// Filter contents of excluded minified CSS. |
| 851 |
$contents = apply_filters( 'autoptimize_filter_js_single_after_minify', $contents ); |
| 852 |
|
| 853 |
// Store in cache. |
| 854 |
$cache->cache( $contents, 'text/javascript' ); |
| 855 |
} |
| 856 |
|
| 857 |
$url = $this->build_minify_single_url( $cache ); |
| 858 |
|
| 859 |
return $url; |
| 860 |
} |
| 861 |
} |
| 862 |
|
