Ubuntu
move( $this->get_converter( $source, $target ), $content, $source ), $source, $target );
}
/**
* Get an instance of the Converter class
*
* @param string $source Source filepath.
* @param string $target Destination filepath.
* @return Converter
*/
protected function get_converter( $source, $target ) {
return new Converter( $source, $target );
}
/**
* Moving a css file should update all relative urls.
* Relative references (e.g. ../images/image.gif) in a certain css file,
* will have to be updated when a file is being saved at another location
* (e.g. ../../images/image.gif, if the new CSS file is 1 folder deeper).
*
* Method copied from WP_Rocket\Dependencies\Minify\CSS;
*
* @param ConverterInterface $converter Relative path converter.
* @param string $content The CSS content to update relative urls for.
* @param string $source The source path or URL for the CSS file.
*
* @return string
*/
protected function move( ConverterInterface $converter, $content, $source ) {
/*
* Relative path references will usually be enclosed by url(). @import
* is an exception, where url() is not necessary around the path (but is
* allowed).
* This *could* be 1 regular expression, where both regular expressions
* in this array are on different sides of a |. But we're using named
* patterns in both regexes, the same name on both regexes. This is only
* possible with a (?J) modifier, but that only works after a fairly
* recent PCRE version. That's why I'm doing 2 separate regular
* expressions & combining the matches after executing of both.
*/
$relative_regexes = [
// url(xxx).
'/
# open url()
url\(
\s*
# open path enclosure
(?P["\'])?
# fetch path
(?P.+?)
# close path enclosure
(?(quotes)(?P=quotes))
\s*
# close url()
\)
/ix',
// @import "xxx"
'/
# import statement
@import
# whitespace
\s+
# we don\'t have to check for @import url(), because the
# condition above will already catch these
# open path enclosure
(?P["\'])
# fetch path
(?P.+?)
# close path enclosure
(?P=quotes)
/ix',
];
// find all relative urls in css.
$matches = [];
foreach ( $relative_regexes as $relative_regex ) {
if ( preg_match_all( $relative_regex, $content, $regex_matches, PREG_SET_ORDER ) ) {
$matches = array_merge( $matches, $regex_matches );
}
}
$search = [];
$replace = [];
// loop all urls.
foreach ( $matches as $match ) {
// determine if it's a url() or an @import match.
$type = ( strpos( $match[0], '@import' ) === 0 ? 'import' : 'url' );
$url = $match['path'];
if ( ! preg_match( '/^(data:|https?:|\\/)/', $url ) ) {
// attempting to interpret GET-params makes no sense, so let's discard them for awhile.
$params = strrchr( $url, '?' );
$url = $params ? substr( $url, 0, -strlen( $params ) ) : $url;
// fix relative url.
$url = filter_var( $source, FILTER_VALIDATE_URL ) ? dirname( $source ) . '/' . ltrim( $url, '/' ) : $converter->convert( $url );
// now that the path has been converted, re-apply GET-params.
$url .= $params;
}
/*
* Urls with control characters above 0x7e should be quoted.
* According to Mozilla's parser, whitespace is only allowed at the
* end of unquoted urls.
* Urls with `)` (as could happen with data: uris) should also be
* quoted to avoid being confused for the url() closing parentheses.
* And urls with a # have also been reported to cause issues.
* Urls with quotes inside should also remain escaped.
*
* @see https://developer.mozilla.org/nl/docs/Web/CSS/url#The_url()_functional_notation
* @see https://hg.mozilla.org/mozilla-central/rev/14abca4e7378
* @see https://github.com/matthiasmullie/minify/issues/193
*/
$url = trim( $url );
if ( preg_match( '/[\s\)\'"#\x{7f}-\x{9f}]/u', $url ) ) {
$url = $match['quotes'] . $url . $match['quotes'];
}
// build replacement.
$search[] = $match[0];
if ( 'url' === $type ) {
$replace[] = 'url(' . $url . ')';
} elseif ( 'import' === $type ) {
$replace[] = '@import "' . $url . '"';
}
}
// replace urls.
return str_replace( $search, $replace, $content );
}
/**
* Applies font-display:swap to all font-family rules without a previously set font-display property.
*
* @since 3.7
*
* @param string $css_file_content CSS file content to modify.
*
* @return string Modified CSS content.
*/
private function apply_font_display_swap( $css_file_content ) {
$css_file_content = (string) $css_file_content;
return preg_replace_callback(
'/(?:@font-face)\s*{(?[^}]+)}/i',
function ( $matches ) {
if ( preg_match( '/font-display:\s*(?\w*);?/i', $matches['value'], $attribute ) ) {
return 'swap' === strtolower( $attribute['swap_value'] )
? $matches[0]
: str_replace( $attribute['swap_value'], 'swap', $matches[0] );
} else {
$swap = "font-display:swap;{$matches['value']}";
}
return str_replace( $matches['value'], $swap, $matches[0] );
},
$css_file_content
);
}
}