| #!/usr/bin/env php | |
| <?php | |
| // helps for large CSS files | |
| ini_set('pcre.backtrack_limit', '10000000'); | |
| // from https://github.com/aaronjensen/sass-media_query_combiner | |
| $pattern = '/ | |
| \\n? # Optional newline | |
| (?<query> # The media query parameters, this will be $1 | |
| @media # Start with @media | |
| (?!\ -sass-debug-info) # Ignore sass-debug-info | |
| [^{]+ # One to many characters that are not {, we are guaranteed to have a space | |
| ) | |
| { | |
| (?<body> # The actual body, this will be $2 | |
| (?<braces> # Recursive capture group | |
| (?: | |
| [^{}]* # Anything that is not a brace | |
| | # OR | |
| {\g<braces>} # Recursively capture things within braces, this allows for balanced braces | |
| )* # As many of these as we have | |
| ) | |
| ) | |
| } | |
| \\n? # Optional newline | |
| /mx'; | |
| $css = file_get_contents('php://stdin'); | |
| $stdout = fopen('php://stdout', 'w'); | |
| $stderr = fopen('php://stderr', 'w'); | |
| // combined media queries | |
| $combinedQueries = array(); | |
| // function ($match) use ($combined) { ... } doesn't seem to work | |
| $otherCSS = preg_replace_callback($pattern, function ($match) { | |
| global $combinedQueries; | |
| $query = $match[1]; | |
| $body = $match[2]; | |
| if (!isset($combinedQueries[$query])) { | |
| $combinedQueries[$query] = array(); | |
| } | |
| $combinedQueries[$query][] = $body; | |
| // replace media query in CSS with nothing; it's in $combined for now instead | |
| return ''; | |
| }, $css); | |
| $lastError = preg_last_error(); | |
| if ($lastError === PREG_NO_ERROR) { | |
| fwrite($stdout, $otherCSS . "\n"); | |
| foreach ($combinedQueries as $query => $bodies) { | |
| $combinedQuery = $query . '{' . join($bodies, "\n") . '}'; | |
| fwrite($stdout, $combinedQuery . "\n"); | |
| } | |
| } else { | |
| // http://www.php.net/manual/en/pcre.constants.php | |
| $lastErrorName = array_flip(get_defined_constants(true)['pcre'])[$lastError]; | |
| fwrite($stderr, $lastErrorName . "\n"); | |
| } | |
| exit($lastError); |