| 1 |
<?php |
| 2 |
/** |
| 3 |
* Class for CSS optimization. |
| 4 |
*/ |
| 5 |
|
| 6 |
if ( ! defined( 'ABSPATH' ) ) { |
| 7 |
exit; |
| 8 |
} |
| 9 |
|
| 10 |
class autoptimizeStyles extends autoptimizeBase |
| 11 |
{ |
| 12 |
const ASSETS_REGEX = '/url\s*\(\s*(?!["\']?data:)(?![\'|\"]?[\#|\%|])([^)]+)\s*\)([^;},\s]*)/i'; |
| 13 |
|
| 14 |
/** |
| 15 |
* Font-face regex-fu from HamZa at: https://stackoverflow.com/a/21395083 |
| 16 |
* ~ |
| 17 |
* @font-face\s* # Match @font-face and some spaces |
| 18 |
* ( # Start group 1 |
| 19 |
* \{ # Match { |
| 20 |
* (?: # A non-capturing group |
| 21 |
* [^{}]+ # Match anything except {} one or more times |
| 22 |
* | # Or |
| 23 |
* (?1) # Recurse/rerun the expression of group 1 |
| 24 |
* )* # Repeat 0 or more times |
| 25 |
* \} # Match } |
| 26 |
* ) # End group 1 |
| 27 |
* ~xs'; |
| 28 |
*/ |
| 29 |
const FONT_FACE_REGEX = '~@font-face\s*(\{(?:[^{}]+|(?1))*\})~xsi'; // added `i` flag for case-insensitivity. |
| 30 |
|
| 31 |
private $css = array(); |
| 32 |
private $csscode = array(); |
| 33 |
private $url = array(); |
| 34 |
private $restofcontent = ''; |
| 35 |
private $datauris = false; |
| 36 |
private $hashmap = array(); |
| 37 |
private $alreadyminified = false; |
| 38 |
private $aggregate = true; |
| 39 |
private $inline = false; |
| 40 |
private $defer = false; |
| 41 |
private $defer_inline = false; |
| 42 |
private $whitelist = ''; |
| 43 |
private $cssinlinesize = ''; |
| 44 |
private $cssremovables = array(); |
| 45 |
private $include_inline = false; |
| 46 |
private $inject_min_late = ''; |
| 47 |
|
| 48 |
// public $cdn_url; // Used all over the place implicitly, so will have to be either public or protected :/ . |
| 49 |
|
| 50 |
// Reads the page and collects style tags. |
| 51 |
public function read( $options ) |
| 52 |
{ |
| 53 |
$noptimizeCSS = apply_filters( 'autoptimize_filter_css_noptimize', false, $this->content ); |
| 54 |
if ( $noptimizeCSS ) { |
| 55 |
return false; |
| 56 |
} |
| 57 |
|
| 58 |
$whitelistCSS = apply_filters( 'autoptimize_filter_css_whitelist', '', $this->content ); |
| 59 |
if ( ! empty( $whitelistCSS ) ) { |
| 60 |
$this->whitelist = array_filter( array_map( 'trim', explode( ',', $whitelistCSS ) ) ); |
| 61 |
} |
| 62 |
|
| 63 |
$removableCSS = apply_filters( 'autoptimize_filter_css_removables', '' ); |
| 64 |
if ( ! empty( $removableCSS ) ) { |
| 65 |
$this->cssremovables = array_filter( array_map( 'trim', explode( ',', $removableCSS ) ) ); |
| 66 |
} |
| 67 |
|
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$this->cssinlinesize = apply_filters( 'autoptimize_filter_css_inlinesize', 256 ); |
| 69 |
|
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// filter to "late inject minified CSS", default to true for now (it is faster). |
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$this->inject_min_late = apply_filters( 'autoptimize_filter_css_inject_min_late', true ); |
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|
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// Remove everything that's not the header. |
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if ( apply_filters( 'autoptimize_filter_css_justhead', $options['justhead'] ) ) { |
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$content = explode( '</head>', $this->content, 2 ); |
| 76 |
$this->content = $content[0] . '</head>'; |
| 77 |
$this->restofcontent = $content[1]; |
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} |
| 79 |
|
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// Determine whether we're doing CSS-files aggregation or not. |
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if ( isset( $options['aggregate'] ) && ! $options['aggregate'] ) { |
| 82 |
$this->aggregate = false; |
| 83 |
} |
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// Returning true for "dontaggregate" turns off aggregation. |
| 85 |
if ( $this->aggregate && apply_filters( 'autoptimize_filter_css_dontaggregate', false ) ) { |
| 86 |
$this->aggregate = false; |
| 87 |
} |
| 88 |
|
| 89 |
// include inline? |
| 90 |
if ( apply_filters( 'autoptimize_css_include_inline', $options['include_inline'] ) ) { |
| 91 |
$this->include_inline = true; |
| 92 |
} |
| 93 |
|
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// List of CSS strings which are excluded from autoptimization. |
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$excludeCSS = apply_filters( 'autoptimize_filter_css_exclude', $options['css_exclude'], $this->content ); |
| 96 |
if ( '' !== $excludeCSS ) { |
| 97 |
$this->dontmove = array_filter( array_map( 'trim', explode( ',', $excludeCSS ) ) ); |
| 98 |
} else { |
| 99 |
$this->dontmove = array(); |
| 100 |
} |
| 101 |
|
| 102 |
// forcefully exclude CSS with data-noptimize attrib. |
| 103 |
$this->dontmove[] = 'data-noptimize'; |
| 104 |
|
| 105 |
// Should we defer css? |
| 106 |
// value: true / false. |
| 107 |
$this->defer = $options['defer']; |
| 108 |
$this->defer = apply_filters( 'autoptimize_filter_css_defer', $this->defer, $this->content ); |
| 109 |
|
| 110 |
// Should we inline while deferring? |
| 111 |
// value: inlined CSS. |
| 112 |
$this->defer_inline = apply_filters( 'autoptimize_filter_css_defer_inline', $options['defer_inline'], $this->content ); |
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|
| 114 |
// Should we inline? |
| 115 |
// value: true / false. |
| 116 |
$this->inline = $options['inline']; |
| 117 |
$this->inline = apply_filters( 'autoptimize_filter_css_inline', $this->inline, $this->content ); |
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|
| 119 |
// Store cdn url. |
| 120 |
$this->cdn_url = $options['cdn_url']; |
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|
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// Store data: URIs setting for later use. |
| 123 |
$this->datauris = $options['datauris']; |
| 124 |
|
| 125 |
// noptimize me. |
| 126 |
$this->content = $this->hide_noptimize( $this->content ); |
| 127 |
|
| 128 |
// Exclude (no)script, as those may contain CSS which should be left as is. |
| 129 |
$this->content = $this->replace_contents_with_marker_if_exists( |
| 130 |
'SCRIPT', |
| 131 |
'<script', |
| 132 |
'#<(?:no)?script.*?<\/(?:no)?script>#is', |
| 133 |
$this->content |
| 134 |
); |
| 135 |
|
| 136 |
// Save IE hacks. |
| 137 |
$this->content = $this->hide_iehacks( $this->content ); |
| 138 |
|
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// Hide HTML comments. |
| 140 |
$this->content = $this->hide_comments( $this->content ); |
| 141 |
|
| 142 |
// Get <style> and <link>. |
| 143 |
if ( preg_match_all( '#(<style[^>]*>.*</style>)|(<link[^>]*stylesheet[^>]*>)#Usmi', $this->content, $matches ) ) { |
| 144 |
|
| 145 |
foreach ( $matches[0] as $tag ) { |
| 146 |
if ( $this->isremovable( $tag, $this->cssremovables ) ) { |
| 147 |
$this->content = str_replace( $tag, '', $this->content ); |
| 148 |
} elseif ( $this->ismovable( $tag ) ) { |
| 149 |
// Get the media. |
| 150 |
if ( false !== strpos( $tag, 'media=' ) ) { |
| 151 |
preg_match( '#media=(?:"|\')([^>]*)(?:"|\')#Ui', $tag, $medias ); |
| 152 |
$medias = explode( ',', $medias[1] ); |
| 153 |
$media = array(); |
| 154 |
foreach ( $medias as $elem ) { |
| 155 |
/* $media[] = current(explode(' ',trim($elem),2)); */ |
| 156 |
if ( empty( $elem ) ) { |
| 157 |
$elem = 'all'; |
| 158 |
} |
| 159 |
|
| 160 |
$media[] = $elem; |
| 161 |
} |
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} else { |
| 163 |
// No media specified - applies to all. |
| 164 |
$media = array( 'all' ); |
| 165 |
} |
| 166 |
|
| 167 |
$media = apply_filters( 'autoptimize_filter_css_tagmedia', $media, $tag ); |
| 168 |
|
| 169 |
if ( preg_match( '#<link.*href=("|\')(.*)("|\')#Usmi', $tag, $source ) ) { |
| 170 |
// <link>. |
| 171 |
$url = current( explode( '?', $source[2], 2 ) ); |
| 172 |
$path = $this->getpath( $url ); |
| 173 |
|
| 174 |
if ( false !== $path && preg_match( '#\.css$#', $path ) ) { |
| 175 |
// Good link. |
| 176 |
$this->css[] = array( $media, $path ); |
| 177 |
} else { |
| 178 |
// Link is dynamic (.php etc). |
| 179 |
$tag = ''; |
| 180 |
} |
| 181 |
} else { |
| 182 |
// Inline css in style tags can be wrapped in comment tags, so restore comments. |
| 183 |
$tag = $this->restore_comments( $tag ); |
| 184 |
preg_match( '#<style.*>(.*)</style>#Usmi', $tag, $code ); |
| 185 |
|
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// And re-hide them to be able to to the removal based on tag. |
| 187 |
$tag = $this->hide_comments( $tag ); |
| 188 |
|
| 189 |
if ( $this->include_inline ) { |
| 190 |
$code = preg_replace( '#^.*<!\[CDATA\[(?:\s*\*/)?(.*)(?://|/\*)\s*?\]\]>.*$#sm', '$1', $code[1] ); |
| 191 |
$this->css[] = array( $media, 'INLINE;' . $code ); |
| 192 |
} else { |
| 193 |
$tag = ''; |
| 194 |
} |
| 195 |
} |
| 196 |
|
| 197 |
// Remove the original style tag. |
| 198 |
$this->content = str_replace( $tag, '', $this->content ); |
| 199 |
} else { |
| 200 |
// Excluded CSS, minify if getpath and filter says so... |
| 201 |
if ( preg_match( '#<link.*href=("|\')(.*)("|\')#Usmi', $tag, $source ) ) { |
| 202 |
$exploded_url = explode( '?', $source[2], 2 ); |
| 203 |
$url = $exploded_url[0]; |
| 204 |
$path = $this->getpath( $url ); |
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|
| 206 |
if ( $path && apply_filters( 'autoptimize_filter_css_minify_excluded', true, $url ) ) { |
| 207 |
$minified_url = $this->minify_single( $path ); |
| 208 |
if ( ! empty( $minified_url ) ) { |
| 209 |
// Replace orig URL with cached minified URL. |
| 210 |
$new_tag = str_replace( $url, $minified_url, $tag ); |
| 211 |
} else { |
| 212 |
$new_tag = $tag; |
| 213 |
} |
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|
| 215 |
// Removes querystring from URL. |
| 216 |
if ( ! empty( $exploded_url[1] ) ) { |
| 217 |
$new_tag = str_replace( '?' . $exploded_url[1], '', $new_tag ); |
| 218 |
} |
| 219 |
|
| 220 |
// Defer single CSS if "inline & defer" is ON and there is inline CSS. |
| 221 |
if ( $this->defer && ! empty( $this->defer_inline ) ) { |
| 222 |
// Get/ set (via filter) the JS to be triggers onload of the preloaded CSS. |
| 223 |
$_preload_onload = apply_filters( |
| 224 |
'autoptimize_filter_css_preload_onload', |
| 225 |
"this.onload=null;this.rel='stylesheet'", |
| 226 |
$url |
| 227 |
); |
| 228 |
// Adapt original <link> element for CSS to be preloaded and add <noscript>-version for fallback. |
| 229 |
$new_tag = '<noscript>' . $new_tag . '</noscript>' . str_replace( |
| 230 |
array( |
| 231 |
"rel='stylesheet'", |
| 232 |
'rel="stylesheet"', |
| 233 |
), |
| 234 |
"rel='preload' as='style' onload=\"" . $_preload_onload . "\"", |
| 235 |
$new_tag |
| 236 |
); |
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} |
| 238 |
|
| 239 |
// And replace! |
| 240 |
$this->content = str_replace( $tag, $new_tag, $this->content ); |
| 241 |
} |
| 242 |
} |
| 243 |
} |
| 244 |
} |
| 245 |
return true; |
| 246 |
} |
| 247 |
|
| 248 |
// Really, no styles? |
| 249 |
return false; |
| 250 |
} |
| 251 |
|
| 252 |
/** |
| 253 |
* Checks if the local file referenced by $path is a valid |
| 254 |
* candidate for being inlined into a data: URI |
| 255 |
* |
| 256 |
* @param string $path |
| 257 |
* @return boolean |
| 258 |
*/ |
| 259 |
private function is_datauri_candidate( $path ) |
| 260 |
{ |
| 261 |
// Call only once since it's called from a loop. |
| 262 |
static $max_size = null; |
| 263 |
if ( null === $max_size ) { |
| 264 |
$max_size = $this->get_datauri_maxsize(); |
| 265 |
} |
| 266 |
|
| 267 |
if ( $path && preg_match( '#\.(jpe?g|png|gif|webp|bmp)$#i', $path ) && |
| 268 |
file_exists( $path ) && is_readable( $path ) && filesize( $path ) <= $max_size ) { |
| 269 |
|
| 270 |
// Seems we have a candidate. |
| 271 |
$is_candidate = true; |
| 272 |
} else { |
| 273 |
// Filter allows overriding default decision (which checks for local file existence). |
| 274 |
$is_candidate = apply_filters( 'autoptimize_filter_css_is_datauri_candidate', false, $path ); |
| 275 |
} |
| 276 |
|
| 277 |
return $is_candidate; |
| 278 |
} |
| 279 |
|
| 280 |
/** |
| 281 |
* Returns the amount of bytes that shouldn't be exceeded if a file is to |
| 282 |
* be inlined into a data: URI. Defaults to 4096, passed through |
| 283 |
* `autoptimize_filter_css_datauri_maxsize` filter. |
| 284 |
* |
| 285 |
* @return mixed |
| 286 |
*/ |
| 287 |
private function get_datauri_maxsize() |
| 288 |
{ |
| 289 |
static $max_size = null; |
| 290 |
|
| 291 |
/** |
| 292 |
* No need to apply the filter multiple times in case the |
| 293 |
* method itself is invoked multiple times during a single request. |
| 294 |
* This prevents some wild stuff like having different maxsizes |
| 295 |
* for different files/site-sections etc. But if you're into that sort |
| 296 |
* of thing you're probably better of building assets completely |
| 297 |
* outside of WordPress anyway. |
| 298 |
*/ |
| 299 |
if ( null === $max_size ) { |
| 300 |
$max_size = (int) apply_filters( 'autoptimize_filter_css_datauri_maxsize', 4096 ); |
| 301 |
} |
| 302 |
|
| 303 |
return $max_size; |
| 304 |
} |
| 305 |
|
| 306 |
private function check_datauri_exclude_list( $url ) |
| 307 |
{ |
| 308 |
static $exclude_list = null; |
| 309 |
$no_datauris = array(); |
| 310 |
|
| 311 |
// Again, skip doing certain stuff repeatedly when loop-called. |
| 312 |
if ( null === $exclude_list ) { |
| 313 |
$exclude_list = apply_filters( 'autoptimize_filter_css_datauri_exclude', '' ); |
| 314 |
$no_datauris = array_filter( array_map( 'trim', explode( ',', $exclude_list ) ) ); |
| 315 |
} |
| 316 |
|
| 317 |
$matched = false; |
| 318 |
|
| 319 |
if ( ! empty( $exclude_list ) ) { |
| 320 |
foreach ( $no_datauris as $no_datauri ) { |
| 321 |
if ( false !== strpos( $url, $no_datauri ) ) { |
| 322 |
$matched = true; |
| 323 |
break; |
| 324 |
} |
| 325 |
} |
| 326 |
} |
| 327 |
|
| 328 |
return $matched; |
| 329 |
} |
| 330 |
|
| 331 |
private function build_or_get_datauri_image( $path ) |
| 332 |
{ |
| 333 |
/** |
| 334 |
* TODO/FIXME: document the required return array format, or better yet, |
| 335 |
* use a string, since we don't really need an array for this. That would, however, |
| 336 |
* require changing even more code, which is not happening right now... |
| 337 |
*/ |
| 338 |
|
| 339 |
// Allows short-circuiting datauri generation for an image. |
| 340 |
$result = apply_filters( 'autoptimize_filter_css_datauri_image', array(), $path ); |
| 341 |
if ( ! empty( $result ) ) { |
| 342 |
if ( is_array( $result ) && isset( $result['full'] ) && isset( $result['base64data'] ) ) { |
| 343 |
return $result; |
| 344 |
} |
| 345 |
} |
| 346 |
|
| 347 |
$hash = md5( $path ); |
| 348 |
$check = new autoptimizeCache( $hash, 'img' ); |
| 349 |
if ( $check->check() ) { |
| 350 |
// we have the base64 image in cache. |
| 351 |
$headAndData = $check->retrieve(); |
| 352 |
$_base64data = explode( ';base64,', $headAndData ); |
| 353 |
$base64data = $_base64data[1]; |
| 354 |
unset( $_base64data ); |
| 355 |
} else { |
| 356 |
// It's an image and we don't have it in cache, get the type by extension. |
| 357 |
$exploded_path = explode( '.', $path ); |
| 358 |
$type = end( $exploded_path ); |
| 359 |
|
| 360 |
switch ( $type ) { |
| 361 |
case 'jpg': |
| 362 |
case 'jpeg': |
| 363 |
$dataurihead = 'data:image/jpeg;base64,'; |
| 364 |
break; |
| 365 |
case 'gif': |
| 366 |
$dataurihead = 'data:image/gif;base64,'; |
| 367 |
break; |
| 368 |
case 'png': |
| 369 |
$dataurihead = 'data:image/png;base64,'; |
| 370 |
break; |
| 371 |
case 'bmp': |
| 372 |
$dataurihead = 'data:image/bmp;base64,'; |
| 373 |
break; |
| 374 |
case 'webp': |
| 375 |
$dataurihead = 'data:image/webp;base64,'; |
| 376 |
break; |
| 377 |
default: |
| 378 |
$dataurihead = 'data:application/octet-stream;base64,'; |
| 379 |
} |
| 380 |
|
| 381 |
// Encode the data. |
| 382 |
$base64data = base64_encode( file_get_contents( $path ) ); |
| 383 |
$headAndData = $dataurihead . $base64data; |
| 384 |
|
| 385 |
// Save in cache. |
| 386 |
$check->cache( $headAndData, 'text/plain' ); |
| 387 |
} |
| 388 |
unset( $check ); |
| 389 |
|
| 390 |
return array( 'full' => $headAndData, 'base64data' => $base64data ); |
| 391 |
} |
| 392 |
|
| 393 |
/** |
| 394 |
* Given an array of key/value pairs to replace in $string, |
| 395 |
* it does so by replacing the longest-matching strings first. |
| 396 |
* |
| 397 |
* @param string $string |
| 398 |
* @param array $replacements |
| 399 |
* |
| 400 |
* @return string |
| 401 |
*/ |
| 402 |
protected static function replace_longest_matches_first( $string, $replacements = array() ) |
| 403 |
{ |
| 404 |
if ( ! empty( $replacements ) ) { |
| 405 |
// Sort the replacements array by key length in desc order (so that the longest strings are replaced first). |
| 406 |
$keys = array_map( 'strlen', array_keys( $replacements ) ); |
| 407 |
array_multisort( $keys, SORT_DESC, $replacements ); |
| 408 |
$string = str_replace( array_keys( $replacements ), array_values( $replacements ), $string ); |
| 409 |
} |
| 410 |
|
| 411 |
return $string; |
| 412 |
} |
| 413 |
|
| 414 |
/** |
| 415 |
* Rewrites/Replaces any ASSETS_REGEX-matching urls in a string. |
| 416 |
* Removes quotes/cruft around each one and passes it through to |
| 417 |
* `autoptimizeBase::url_replace_cdn()`. |
| 418 |
* Replacements are performed in a `longest-match-replaced-first` way. |
| 419 |
* |
| 420 |
* @param string $code CSS code. |
| 421 |
* |
| 422 |
* @return string |
| 423 |
*/ |
| 424 |
public function replace_urls( $code = '' ) |
| 425 |
{ |
| 426 |
$replacements = array(); |
| 427 |
|
| 428 |
preg_match_all( self::ASSETS_REGEX, $code, $url_src_matches ); |
| 429 |
if ( is_array( $url_src_matches ) && ! empty( $url_src_matches ) ) { |
| 430 |
foreach ( $url_src_matches[1] as $count => $original_url ) { |
| 431 |
// Removes quotes and other cruft. |
| 432 |
$url = trim( $original_url, " \t\n\r\0\x0B\"'" ); |
| 433 |
|
| 434 |
/** |
| 435 |
* TODO/FIXME: Add a way for other code / callable to be called here |
| 436 |
* and provide it's own results for the $replacements array |
| 437 |
* for the "current" key. |
| 438 |
* If such a result is returned/provided, we sholud then avoid |
| 439 |
* calling url_replace_cdn() here for the current iteration. |
| 440 |
* |
| 441 |
* This would maybe allow the inlining logic currently present |
| 442 |
* in `autoptimizeStyles::rewrite_assets()` to be "pulled out" |
| 443 |
* and given as a callable to this method or something... and |
| 444 |
* then we could "just" call `replace_urls()` from within |
| 445 |
* `autoptimizeStyles::rewrite_assets()` and avoid some |
| 446 |
* (currently present) code/logic duplication. |
| 447 |
*/ |
| 448 |
|
| 449 |
// Do CDN replacement if needed. |
| 450 |
if ( ! empty( $this->cdn_url ) ) { |
| 451 |
$replacement_url = $this->url_replace_cdn( $url ); |
| 452 |
// Prepare replacements array. |
| 453 |
$replacements[ $url_src_matches[1][ $count ] ] = str_replace( |
| 454 |
$original_url, $replacement_url, $url_src_matches[1][$count] |
| 455 |
); |
| 456 |
} |
| 457 |
} |
| 458 |
} |
| 459 |
|
| 460 |
$code = self::replace_longest_matches_first( $code, $replacements ); |
| 461 |
|
| 462 |
return $code; |
| 463 |
} |
| 464 |
|
| 465 |
/** |
| 466 |
* "Hides" @font-face declarations by replacing them with `%%FONTFACE%%` markers. |
| 467 |
* Also does CDN replacement of any font-urls within those declarations if the `autoptimize_filter_css_fonts_cdn` |
| 468 |
* filter is used. |
| 469 |
* |
| 470 |
* @param string $code |
| 471 |
* @return string |
| 472 |
*/ |
| 473 |
public function hide_fontface_and_maybe_cdn( $code ) |
| 474 |
{ |
| 475 |
// Proceed only if @font-face declarations exist within $code. |
| 476 |
preg_match_all( self::FONT_FACE_REGEX, $code, $fontfaces ); |
| 477 |
if ( isset( $fontfaces[0] ) ) { |
| 478 |
// Check if we need to cdn fonts or not. |
| 479 |
$do_font_cdn = apply_filters( 'autoptimize_filter_css_fonts_cdn', false ); |
| 480 |
|
| 481 |
foreach ( $fontfaces[0] as $full_match ) { |
| 482 |
// Keep original match so we can search/replace it. |
| 483 |
$match_search = $full_match; |
| 484 |
|
| 485 |
// Do font cdn if needed. |
| 486 |
if ( $do_font_cdn ) { |
| 487 |
$full_match = $this->replace_urls( $full_match ); |
| 488 |
} |
| 489 |
|
| 490 |
// Replace declaration with its base64 encoded string. |
| 491 |
$replacement = self::build_marker( 'FONTFACE', $full_match ); |
| 492 |
$code = str_replace( $match_search, $replacement, $code ); |
| 493 |
} |
| 494 |
} |
| 495 |
|
| 496 |
return $code; |
| 497 |
} |
| 498 |
|
| 499 |
/** |
| 500 |
* Restores original @font-face declarations that have been "hidden" |
| 501 |
* using `hide_fontface_and_maybe_cdn()`. |
| 502 |
* |
| 503 |
* @param string $code |
| 504 |
* @return string |
| 505 |
*/ |
| 506 |
public function restore_fontface( $code ) |
| 507 |
{ |
| 508 |
return $this->restore_marked_content( 'FONTFACE', $code ); |
| 509 |
} |
| 510 |
|
| 511 |
// Re-write (and/or inline) referenced assets. |
| 512 |
public function rewrite_assets( $code ) |
| 513 |
{ |
| 514 |
// Handle @font-face rules by hiding and processing them separately. |
| 515 |
$code = $this->hide_fontface_and_maybe_cdn( $code ); |
| 516 |
|
| 517 |
/** |
| 518 |
* TODO/FIXME: |
| 519 |
* Certain code parts below are kind-of repeated now in `replace_urls()`, which is not ideal. |
| 520 |
* There is maybe a way to separate/refactor things and then be able to keep |
| 521 |
* the ASSETS_REGEX rewriting/handling logic in a single place (along with removing quotes/cruft from matched urls). |
| 522 |
* See comments in `replace_urls()` regarding this. The idea is to extract the inlining |
| 523 |
* logic out (which is the only real difference between replace_urls() and the code below), but still |
| 524 |
* achieve identical results as before. |
| 525 |
*/ |
| 526 |
|
| 527 |
// Re-write (and/or inline) URLs to point them to the CDN host. |
| 528 |
$url_src_matches = array(); |
| 529 |
$imgreplace = array(); |
| 530 |
// Matches and captures anything specified within the literal `url()` and excludes those containing data: URIs. |
| 531 |
preg_match_all( self::ASSETS_REGEX, $code, $url_src_matches ); |
| 532 |
if ( is_array( $url_src_matches ) && ! empty( $url_src_matches ) ) { |
| 533 |
foreach ( $url_src_matches[1] as $count => $original_url ) { |
| 534 |
// Removes quotes and other cruft. |
| 535 |
$url = trim( $original_url, " \t\n\r\0\x0B\"'" ); |
| 536 |
|
| 537 |
// If datauri inlining is turned on, do it. |
| 538 |
$inlined = false; |
| 539 |
if ( $this->datauris ) { |
| 540 |
$iurl = $url; |
| 541 |
if ( false !== strpos( $iurl, '?' ) ) { |
| 542 |
$iurl = strtok( $iurl, '?' ); |
| 543 |
} |
| 544 |
|
| 545 |
$ipath = $this->getpath( $iurl ); |
| 546 |
|
| 547 |
$excluded = $this->check_datauri_exclude_list( $ipath ); |
| 548 |
if ( ! $excluded ) { |
| 549 |
$is_datauri_candidate = $this->is_datauri_candidate( $ipath ); |
| 550 |
if ( $is_datauri_candidate ) { |
| 551 |
$datauri = $this->build_or_get_datauri_image( $ipath ); |
| 552 |
$base64data = $datauri['base64data']; |
| 553 |
// Add it to the list for replacement. |
| 554 |
$imgreplace[ $url_src_matches[1][ $count ] ] = str_replace( |
| 555 |
$original_url, |
| 556 |
$datauri['full'], |
| 557 |
$url_src_matches[1][$count] |
| 558 |
); |
| 559 |
$inlined = true; |
| 560 |
} |
| 561 |
} |
| 562 |
} |
| 563 |
|
| 564 |
/** |
| 565 |
* Doing CDN URL replacement for every found match (if CDN is |
| 566 |
* specified). This way we make sure to do it even if |
| 567 |
* inlining isn't turned on, or if a resource is skipped from |
| 568 |
* being inlined for whatever reason above. |
| 569 |
*/ |
| 570 |
if ( ! $inlined && ( ! empty( $this->cdn_url ) || has_filter( 'autoptimize_filter_base_replace_cdn' ) ) ) { |
| 571 |
// Just do the "simple" CDN replacement. |
| 572 |
$replacement_url = $this->url_replace_cdn( $url ); |
| 573 |
$imgreplace[ $url_src_matches[1][ $count ] ] = str_replace( |
| 574 |
$original_url, $replacement_url, $url_src_matches[1][$count] |
| 575 |
); |
| 576 |
} |
| 577 |
} |
| 578 |
} |
| 579 |
|
| 580 |
$code = self::replace_longest_matches_first( $code, $imgreplace ); |
| 581 |
|
| 582 |
// Replace back font-face markers with actual font-face declarations. |
| 583 |
$code = $this->restore_fontface( $code ); |
| 584 |
|
| 585 |
return $code; |
| 586 |
} |
| 587 |
|
| 588 |
// Joins and optimizes CSS. |
| 589 |
public function minify() |
| 590 |
{ |
| 591 |
foreach ( $this->css as $group ) { |
| 592 |
list( $media, $css ) = $group; |
| 593 |
if ( preg_match( '#^INLINE;#', $css ) ) { |
| 594 |
// <style>. |
| 595 |
$css = preg_replace( '#^INLINE;#', '', $css ); |
| 596 |
$css = self::fixurls( ABSPATH . 'index.php', $css ); // ABSPATH already contains a trailing slash. |
| 597 |
$tmpstyle = apply_filters( 'autoptimize_css_individual_style', $css, '' ); |
| 598 |
if ( has_filter( 'autoptimize_css_individual_style' ) && ! empty( $tmpstyle ) ) { |
| 599 |
$css = $tmpstyle; |
| 600 |
$this->alreadyminified = true; |
| 601 |
} |
| 602 |
} else { |
| 603 |
// <link> |
| 604 |
if ( false !== $css && file_exists( $css ) && is_readable( $css ) ) { |
| 605 |
$cssPath = $css; |
| 606 |
$css = self::fixurls( $cssPath, file_get_contents( $cssPath ) ); |
| 607 |
$css = preg_replace( '/\x{EF}\x{BB}\x{BF}/', '', $css ); |
| 608 |
$tmpstyle = apply_filters( 'autoptimize_css_individual_style', $css, $cssPath ); |
| 609 |
if ( has_filter( 'autoptimize_css_individual_style' ) && ! empty( $tmpstyle ) ) { |
| 610 |
$css = $tmpstyle; |
| 611 |
$this->alreadyminified = true; |
| 612 |
} elseif ( $this->can_inject_late( $cssPath, $css ) ) { |
| 613 |
$css = self::build_injectlater_marker( $cssPath, md5( $css ) ); |
| 614 |
} |
| 615 |
} else { |
| 616 |
// Couldn't read CSS. Maybe getpath isn't working? |
| 617 |
$css = ''; |
| 618 |
} |
| 619 |
} |
| 620 |
|
| 621 |
foreach ( $media as $elem ) { |
| 622 |
if ( ! empty( $css ) ) { |
| 623 |
if ( ! isset( $this->csscode[$elem] ) ) { |
| 624 |
$this->csscode[$elem] = ''; |
| 625 |
} |
| 626 |
$this->csscode[$elem] .= "\n/*FILESTART*/" . $css; |
| 627 |
} |
| 628 |
} |
| 629 |
} |
| 630 |
|
| 631 |
// Check for duplicate code. |
| 632 |
$md5list = array(); |
| 633 |
$tmpcss = $this->csscode; |
| 634 |
foreach ( $tmpcss as $media => $code ) { |
| 635 |
$md5sum = md5( $code ); |
| 636 |
$medianame = $media; |
| 637 |
foreach ( $md5list as $med => $sum ) { |
| 638 |
// If same code. |
| 639 |
if ( $sum === $md5sum ) { |
| 640 |
// Add the merged code. |
| 641 |
$medianame = $med . ', ' . $media; |
| 642 |
$this->csscode[$medianame] = $code; |
| 643 |
$md5list[$medianame] = $md5list[$med]; |
| 644 |
unset( $this->csscode[$med], $this->csscode[$media], $med5list[$med] ); |
| 645 |
} |
| 646 |
} |
| 647 |
$md5list[$medianame] = $md5sum; |
| 648 |
} |
| 649 |
unset( $tmpcss ); |
| 650 |
|
| 651 |
// Manage @imports, while is for recursive import management. |
| 652 |
foreach ( $this->csscode as &$thiscss ) { |
| 653 |
// Flag to trigger import reconstitution and var to hold external imports. |
| 654 |
$fiximports = false; |
| 655 |
$external_imports = ''; |
| 656 |
|
| 657 |
// remove comments to avoid importing commented-out imports. |
| 658 |
$thiscss_nocomments = preg_replace( '#/\*.*\*/#Us', '', $thiscss ); |
| 659 |
while ( preg_match_all( '#@import +(?:url)?(?:(?:\((["\']?)(?:[^"\')]+)\1\)|(["\'])(?:[^"\']+)\2)(?:[^,;"\']+(?:,[^,;"\']+)*)?)(?:;)#mi', $thiscss_nocomments, $matches ) ) { |
| 660 |
foreach ( $matches[0] as $import ) { |
| 661 |
if ( $this->isremovable( $import, $this->cssremovables ) ) { |
| 662 |
$thiscss = str_replace( $import, '', $thiscss ); |
| 663 |
$import_ok = true; |
| 664 |
} else { |
| 665 |
$url = trim( preg_replace( '#^.*((?:https?:|ftp:)?//.*\.css).*$#', '$1', trim( $import ) ), " \t\n\r\0\x0B\"'" ); |
| 666 |
$path = $this->getpath( $url ); |
| 667 |
$import_ok = false; |
| 668 |
if ( file_exists( $path ) && is_readable( $path ) ) { |
| 669 |
$code = addcslashes( self::fixurls( $path, file_get_contents( $path ) ), "\\" ); |
| 670 |
$code = preg_replace( '/\x{EF}\x{BB}\x{BF}/', '', $code ); |
| 671 |
$tmpstyle = apply_filters( 'autoptimize_css_individual_style', $code, '' ); |
| 672 |
if ( has_filter( 'autoptimize_css_individual_style' ) && ! empty( $tmpstyle ) ) { |
| 673 |
$code = $tmpstyle; |
| 674 |
$this->alreadyminified = true; |
| 675 |
} elseif ( $this->can_inject_late( $path, $code ) ) { |
| 676 |
$code = self::build_injectlater_marker( $path, md5( $code ) ); |
| 677 |
} |
| 678 |
|
| 679 |
if ( ! empty( $code ) ) { |
| 680 |
$tmp_thiscss = preg_replace( '#(/\*FILESTART\*/.*)' . preg_quote( $import, '#' ) . '#Us', '/*FILESTART2*/' . $code . '$1', $thiscss ); |
| 681 |
if ( ! empty( $tmp_thiscss ) ) { |
| 682 |
$thiscss = $tmp_thiscss; |
| 683 |
$import_ok = true; |
| 684 |
unset( $tmp_thiscss ); |
| 685 |
} |
| 686 |
} |
| 687 |
unset( $code ); |
| 688 |
} |
| 689 |
} |
| 690 |
if ( ! $import_ok ) { |
| 691 |
// External imports and general fall-back. |
| 692 |
$external_imports .= $import; |
| 693 |
|
| 694 |
$thiscss = str_replace( $import, '', $thiscss ); |
| 695 |
$fiximports = true; |
| 696 |
} |
| 697 |
} |
| 698 |
$thiscss = preg_replace( '#/\*FILESTART\*/#', '', $thiscss ); |
| 699 |
$thiscss = preg_replace( '#/\*FILESTART2\*/#', '/*FILESTART*/', $thiscss ); |
| 700 |
|
| 701 |
// and update $thiscss_nocomments before going into next iteration in while loop. |
| 702 |
$thiscss_nocomments = preg_replace( '#/\*.*\*/#Us', '', $thiscss ); |
| 703 |
} |
| 704 |
unset( $thiscss_nocomments ); |
| 705 |
|
| 706 |
// Add external imports to top of aggregated CSS. |
| 707 |
if ( $fiximports ) { |
| 708 |
$thiscss = $external_imports . $thiscss; |
| 709 |
} |
| 710 |
} |
| 711 |
unset( $thiscss ); |
| 712 |
|
| 713 |
// $this->csscode has all the uncompressed code now. |
| 714 |
foreach ( $this->csscode as &$code ) { |
| 715 |
// Check for already-minified code. |
| 716 |
$hash = md5( $code ); |
| 717 |
do_action( 'autoptimize_action_css_hash', $hash ); |
| 718 |
$ccheck = new autoptimizeCache( $hash, 'css' ); |
| 719 |
if ( $ccheck->check() ) { |
| 720 |
$code = $ccheck->retrieve(); |
| 721 |
$this->hashmap[md5( $code )] = $hash; |
| 722 |
continue; |
| 723 |
} |
| 724 |
unset( $ccheck ); |
| 725 |
|
| 726 |
// Rewrite and/or inline referenced assets. |
| 727 |
$code = $this->rewrite_assets( $code ); |
| 728 |
|
| 729 |
// Minify. |
| 730 |
$code = $this->run_minifier_on( $code ); |
| 731 |
|
| 732 |
// Bring back INJECTLATER stuff. |
| 733 |
$code = $this->inject_minified( $code ); |
| 734 |
|
| 735 |
// Filter results. |
| 736 |
$tmp_code = apply_filters( 'autoptimize_css_after_minify', $code ); |
| 737 |
if ( ! empty( $tmp_code ) ) { |
| 738 |
$code = $tmp_code; |
| 739 |
unset( $tmp_code ); |
| 740 |
} |
| 741 |
|
| 742 |
$this->hashmap[md5( $code )] = $hash; |
| 743 |
} |
| 744 |
|
| 745 |
unset( $code ); |
| 746 |
return true; |
| 747 |
} |
| 748 |
|
| 749 |
public function run_minifier_on( $code ) |
| 750 |
{ |
| 751 |
if ( ! $this->alreadyminified ) { |
| 752 |
$do_minify = apply_filters( 'autoptimize_css_do_minify', true ); |
| 753 |
|
| 754 |
if ( $do_minify ) { |
| 755 |
$cssmin = new autoptimizeCSSmin(); |
| 756 |
$tmp_code = trim( $cssmin->run( $code ) ); |
| 757 |
|
| 758 |
if ( ! empty( $tmp_code ) ) { |
| 759 |
$code = $tmp_code; |
| 760 |
unset( $tmp_code ); |
| 761 |
} |
| 762 |
} |
| 763 |
} |
| 764 |
|
| 765 |
return $code; |
| 766 |
} |
| 767 |
|
| 768 |
// Caches the CSS in uncompressed, deflated and gzipped form. |
| 769 |
public function cache() |
| 770 |
{ |
| 771 |
// CSS cache. |
| 772 |
foreach ( $this->csscode as $media => $code ) { |
| 773 |
$md5 = $this->hashmap[md5( $code )]; |
| 774 |
$cache = new autoptimizeCache( $md5, 'css' ); |
| 775 |
if ( ! $cache->check() ) { |
| 776 |
// Cache our code. |
| 777 |
$cache->cache( $code, 'text/css' ); |
| 778 |
} |
| 779 |
$this->url[$media] = AUTOPTIMIZE_CACHE_URL . $cache->getname(); |
| 780 |
} |
| 781 |
} |
| 782 |
|
| 783 |
// Returns the content. |
| 784 |
public function getcontent() |
| 785 |
{ |
| 786 |
// restore comments. |
| 787 |
$this->content = $this->restore_comments( $this->content ); |
| 788 |
|
| 789 |
// restore IE hacks. |
| 790 |
$this->content = $this->restore_iehacks( $this->content ); |
| 791 |
|
| 792 |
// restore (no)script. |
| 793 |
$this->content = $this->restore_marked_content( 'SCRIPT', $this->content ); |
| 794 |
|
| 795 |
// Restore noptimize. |
| 796 |
$this->content = $this->restore_noptimize( $this->content ); |
| 797 |
|
| 798 |
// Restore the full content. |
| 799 |
if ( ! empty( $this->restofcontent ) ) { |
| 800 |
$this->content .= $this->restofcontent; |
| 801 |
$this->restofcontent = ''; |
| 802 |
} |
| 803 |
|
| 804 |
// Inject the new stylesheets. |
| 805 |
$replaceTag = array( '<title', 'before' ); |
| 806 |
$replaceTag = apply_filters( 'autoptimize_filter_css_replacetag', $replaceTag, $this->content ); |
| 807 |
|
| 808 |
if ( $this->inline ) { |
| 809 |
foreach ( $this->csscode as $media => $code ) { |
| 810 |
$this->inject_in_html( '<style type="text/css" media="' . $media . '">' . $code . '</style>', $replaceTag ); |
| 811 |
} |
| 812 |
} else { |
| 813 |
if ( $this->defer ) { |
| 814 |
$preloadCssBlock = ''; |
| 815 |
$noScriptCssBlock = "<noscript id=\"aonoscrcss\">"; |
| 816 |
|
| 817 |
$defer_inline_code = $this->defer_inline; |
| 818 |
if ( ! empty( $defer_inline_code ) ) { |
| 819 |
if ( apply_filters( 'autoptimize_filter_css_critcss_minify', true ) ) { |
| 820 |
$iCssHash = md5( $defer_inline_code ); |
| 821 |
$iCssCache = new autoptimizeCache( $iCssHash, 'css' ); |
| 822 |
if ( $iCssCache->check() ) { |
| 823 |
// we have the optimized inline CSS in cache. |
| 824 |
$defer_inline_code = $iCssCache->retrieve(); |
| 825 |
} else { |
| 826 |
$cssmin = new autoptimizeCSSmin(); |
| 827 |
$tmp_code = trim( $cssmin->run( $defer_inline_code ) ); |
| 828 |
|
| 829 |
if ( ! empty( $tmp_code ) ) { |
| 830 |
$defer_inline_code = $tmp_code; |
| 831 |
$iCssCache->cache( $defer_inline_code, 'text/css' ); |
| 832 |
unset( $tmp_code ); |
| 833 |
} |
| 834 |
} |
| 835 |
} |
| 836 |
$code_out = '<style type="text/css" id="aoatfcss" media="all">' . $defer_inline_code . '</style>'; |
| 837 |
$this->inject_in_html( $code_out, $replaceTag ); |
| 838 |
} |
| 839 |
} |
| 840 |
|
| 841 |
foreach ( $this->url as $media => $url ) { |
| 842 |
$url = $this->url_replace_cdn( $url ); |
| 843 |
|
| 844 |
// Add the stylesheet either deferred (import at bottom) or normal links in head. |
| 845 |
if ( $this->defer ) { |
| 846 |
$preloadOnLoad = autoptimizeConfig::get_ao_css_preload_onload(); |
| 847 |
|
| 848 |
$preloadCssBlock .= '<link rel="preload" as="style" media="' . $media . '" href="' . $url . '" onload="' . $preloadOnLoad . '" />'; |
| 849 |
$noScriptCssBlock .= '<link type="text/css" media="' . $media . '" href="' . $url . '" rel="stylesheet" />'; |
| 850 |
} else { |
| 851 |
// $this->inject_in_html('<link type="text/css" media="' . $media . '" href="' . $url . '" rel="stylesheet" />', $replaceTag); |
| 852 |
if ( strlen( $this->csscode[$media] ) > $this->cssinlinesize ) { |
| 853 |
$this->inject_in_html( '<link type="text/css" media="' . $media . '" href="' . $url . '" rel="stylesheet" />', $replaceTag ); |
| 854 |
} elseif ( strlen( $this->csscode[$media] ) > 0 ) { |
| 855 |
$this->inject_in_html( '<style type="text/css" media="' . $media . '">' . $this->csscode[$media] . '</style>', $replaceTag ); |
| 856 |
} |
| 857 |
} |
| 858 |
} |
| 859 |
|
| 860 |
if ( $this->defer ) { |
| 861 |
$preload_polyfill = autoptimizeConfig::get_ao_css_preload_polyfill(); |
| 862 |
$noScriptCssBlock .= '</noscript>'; |
| 863 |
$this->inject_in_html( $preloadCssBlock . $noScriptCssBlock, $replaceTag ); |
| 864 |
|
| 865 |
// Adds preload polyfill at end of body tag. |
| 866 |
$this->inject_in_html( |
| 867 |
apply_filters( 'autoptimize_css_preload_polyfill', $preload_polyfill ), |
| 868 |
array( '</body>', 'before' ) |
| 869 |
); |
| 870 |
} |
| 871 |
} |
| 872 |
|
| 873 |
// Return the modified stylesheet. |
| 874 |
return $this->content; |
| 875 |
} |
| 876 |
|
| 877 |
static function fixurls( $file, $code ) |
| 878 |
{ |
| 879 |
// Switch all imports to the url() syntax. |
| 880 |
$code = preg_replace( '#@import ("|\')(.+?)\.css.*?("|\')#', '@import url("${2}.css")', $code ); |
| 881 |
|
| 882 |
if ( preg_match_all( self::ASSETS_REGEX, $code, $matches ) ) { |
| 883 |
$file = str_replace( WP_ROOT_DIR, '/', $file ); |
| 884 |
/** |
| 885 |
* rollback as per https://github.com/futtta/autoptimize/issues/94 |
| 886 |
* $file = str_replace( AUTOPTIMIZE_WP_CONTENT_NAME, '', $file ); |
| 887 |
*/ |
| 888 |
$dir = dirname( $file ); // Like /themes/expound/css. |
| 889 |
|
| 890 |
/** |
| 891 |
* $dir should not contain backslashes, since it's used to replace |
| 892 |
* urls, but it can contain them when running on Windows because |
| 893 |
* fixurls() is sometimes called with `ABSPATH . 'index.php'` |
| 894 |
*/ |
| 895 |
$dir = str_replace( '\\', '/', $dir ); |
| 896 |
unset( $file ); // not used below at all. |
| 897 |
|
| 898 |
$replace = array(); |
| 899 |
foreach ( $matches[1] as $k => $url ) { |
| 900 |
// Remove quotes. |
| 901 |
$url = trim( $url, " \t\n\r\0\x0B\"'" ); |
| 902 |
$noQurl = trim( $url, "\"'" ); |
| 903 |
if ( $url !== $noQurl ) { |
| 904 |
$removedQuotes = true; |
| 905 |
} else { |
| 906 |
$removedQuotes = false; |
| 907 |
} |
| 908 |
|
| 909 |
if ( '' === $noQurl ) { |
| 910 |
continue; |
| 911 |
} |
| 912 |
|
| 913 |
$url = $noQurl; |
| 914 |
if ( '/' === $url{0} || preg_match( '#^(https?://|ftp://|data:)#i', $url ) ) { |
| 915 |
// URL is protocol-relative, host-relative or something we don't touch. |
| 916 |
continue; |
| 917 |
} else { |
| 918 |
// Relative URL. |
| 919 |
/** |
| 920 |
* rollback as per https://github.com/futtta/autoptimize/issues/94 |
| 921 |
* $newurl = preg_replace( '/https?:/', '', str_replace( ' ', '%20', AUTOPTIMIZE_WP_CONTENT_URL . str_replace( '//', '/', $dir . '/' . $url ) ) ); |
| 922 |
*/ |
| 923 |
$newurl = preg_replace( '/https?:/', '', str_replace( ' ', '%20', AUTOPTIMIZE_WP_ROOT_URL . str_replace( '//', '/', $dir . '/' . $url ) ) ); |
| 924 |
$newurl = apply_filters( 'autoptimize_filter_css_fixurl_newurl', $newurl ); |
| 925 |
|
| 926 |
/** |
| 927 |
* Hash the url + whatever was behind potentially for replacement |
| 928 |
* We must do this, or different css classes referencing the same bg image (but |
| 929 |
* different parts of it, say, in sprites and such) loose their stuff... |
| 930 |
*/ |
| 931 |
$hash = md5( $url . $matches[2][$k] ); |
| 932 |
$code = str_replace( $matches[0][$k], $hash, $code ); |
| 933 |
|
| 934 |
if ( $removedQuotes ) { |
| 935 |
$replace[$hash] = "url('" . $newurl . "')" . $matches[2][$k]; |
| 936 |
} else { |
| 937 |
$replace[$hash] = 'url(' . $newurl . ')' . $matches[2][$k]; |
| 938 |
} |
| 939 |
} |
| 940 |
} |
| 941 |
|
| 942 |
$code = self::replace_longest_matches_first( $code, $replace ); |
| 943 |
} |
| 944 |
|
| 945 |
return $code; |
| 946 |
} |
| 947 |
|
| 948 |
private function ismovable( $tag ) |
| 949 |
{ |
| 950 |
if ( ! $this->aggregate ) { |
| 951 |
return false; |
| 952 |
} |
| 953 |
|
| 954 |
if ( ! empty( $this->whitelist ) ) { |
| 955 |
foreach ( $this->whitelist as $match ) { |
| 956 |
if ( false !== strpos( $tag, $match ) ) { |
| 957 |
return true; |
| 958 |
} |
| 959 |
} |
| 960 |
// no match with whitelist. |
| 961 |
return false; |
| 962 |
} else { |
| 963 |
if ( is_array( $this->dontmove ) && ! empty( $this->dontmove ) ) { |
| 964 |
foreach ( $this->dontmove as $match ) { |
| 965 |
if ( false !== strpos( $tag, $match ) ) { |
| 966 |
// Matched something. |
| 967 |
return false; |
| 968 |
} |
| 969 |
} |
| 970 |
} |
| 971 |
|
| 972 |
// If we're here it's safe to move. |
| 973 |
return true; |
| 974 |
} |
| 975 |
} |
| 976 |
|
| 977 |
private function can_inject_late( $cssPath, $css ) |
| 978 |
{ |
| 979 |
$consider_minified_array = apply_filters( 'autoptimize_filter_css_consider_minified', false, $cssPath ); |
| 980 |
if ( true !== $this->inject_min_late ) { |
| 981 |
// late-inject turned off. |
| 982 |
return false; |
| 983 |
} elseif ( ( false === strpos( $cssPath, 'min.css' ) ) && ( str_replace( $consider_minified_array, '', $cssPath ) === $cssPath ) ) { |
| 984 |
// file not minified based on filename & filter. |
| 985 |
return false; |
| 986 |
} elseif ( false !== strpos( $css, '@import' ) ) { |
| 987 |
// can't late-inject files with imports as those need to be aggregated. |
| 988 |
return false; |
| 989 |
} elseif ( ( false !== strpos( $css, '@font-face' ) ) && ( apply_filters( 'autoptimize_filter_css_fonts_cdn', false ) === true ) && ( ! empty( $this->cdn_url ) ) ) { |
| 990 |
// don't late-inject CSS with font-src's if fonts are set to be CDN'ed. |
| 991 |
return false; |
| 992 |
} elseif ( ( ( $this->datauris == true ) || ( ! empty( $this->cdn_url ) ) ) && preg_match( '#background[^;}]*url\(#Ui', $css ) ) { |
| 993 |
// don't late-inject CSS with images if CDN is set OR if image inlining is on. |
| 994 |
return false; |
| 995 |
} else { |
| 996 |
// phew, all is safe, we can late-inject. |
| 997 |
return true; |
| 998 |
} |
| 999 |
} |
| 1000 |
|
| 1001 |
/** |
| 1002 |
* Minifies (and cdn-replaces) a single local css file |
| 1003 |
* and returns its (cached) url. |
| 1004 |
* |
| 1005 |
* @param string $filepath Filepath. |
| 1006 |
* @param bool $cache_miss Optional. Force a cache miss. Default false. |
| 1007 |
* |
| 1008 |
* @return bool|string Url pointing to the minified css file or false. |
| 1009 |
*/ |
| 1010 |
public function minify_single( $filepath, $cache_miss = false ) |
| 1011 |
{ |
| 1012 |
$contents = $this->prepare_minify_single( $filepath ); |
| 1013 |
|
| 1014 |
if ( empty( $contents ) ) { |
| 1015 |
return false; |
| 1016 |
} |
| 1017 |
|
| 1018 |
// Check cache. |
| 1019 |
$hash = 'single_' . md5( $contents ); |
| 1020 |
$cache = new autoptimizeCache( $hash, 'css' ); |
| 1021 |
|
| 1022 |
// If not in cache already, minify... |
| 1023 |
if ( ! $cache->check() || $cache_miss ) { |
| 1024 |
// Fixurls... |
| 1025 |
$contents = self::fixurls( $filepath, $contents ); |
| 1026 |
// CDN-replace any referenced assets if needed... |
| 1027 |
$contents = $this->replace_urls( $contents ); |
| 1028 |
// Now minify... |
| 1029 |
$cssmin = new autoptimizeCSSmin(); |
| 1030 |
$contents = trim( $cssmin->run( $contents ) ); |
| 1031 |
// Store in cache. |
| 1032 |
$cache->cache( $contents, 'text/css' ); |
| 1033 |
} |
| 1034 |
|
| 1035 |
$url = $this->build_minify_single_url( $cache ); |
| 1036 |
|
| 1037 |
return $url; |
| 1038 |
} |
| 1039 |
|
| 1040 |
/** |
| 1041 |
* Returns whether we're doing aggregation or not. |
| 1042 |
* |
| 1043 |
* @return bool |
| 1044 |
*/ |
| 1045 |
public function aggregating() |
| 1046 |
{ |
| 1047 |
return $this->aggregate; |
| 1048 |
} |
| 1049 |
|
| 1050 |
public function getOptions() |
| 1051 |
{ |
| 1052 |
return $this->options; |
| 1053 |
} |
| 1054 |
|
| 1055 |
public function replaceOptions( $options ) |
| 1056 |
{ |
| 1057 |
$this->options = $options; |
| 1058 |
} |
| 1059 |
|
| 1060 |
public function setOption( $name, $value ) |
| 1061 |
{ |
| 1062 |
$this->options[$name] = $value; |
| 1063 |
$this->$name = $value; |
| 1064 |
} |
| 1065 |
|
| 1066 |
public function getOption( $name ) |
| 1067 |
{ |
| 1068 |
return $this->options[$name]; |
| 1069 |
} |
| 1070 |
} |
| 1071 |
|
