run(); } public function run() { $opts = getopt( 'hi:o:', array( 'help', 'input:', 'output:', 'dry-run', 'keep-sourcemap', 'keep-sourcemap-comment', 'linebreak-position:', 'memory-limit:', 'pcre-backtrack-limit:', 'pcre-recursion-limit:', 'remove-important-comments' ) ); $help = $this->getOpt(array('h', 'help'), $opts); $input = $this->getOpt(array('i', 'input'), $opts); $output = $this->getOpt(array('o', 'output'), $opts); $dryrun = $this->getOpt('dry-run', $opts); $keepSourceMapComment = $this->getOpt(array('keep-sourcemap', 'keep-sourcemap-comment'), $opts); $linebreakPosition = $this->getOpt('linebreak-position', $opts); $memoryLimit = $this->getOpt('memory-limit', $opts); $backtrackLimit = $this->getOpt('pcre-backtrack-limit', $opts); $recursionLimit = $this->getOpt('pcre-recursion-limit', $opts); $removeImportantComments = $this->getOpt('remove-important-comments', $opts); if (!is_null($help)) { $this->showHelp(); die( esc_html( self::SUCCESS_EXIT ) ); } if (is_null($input)) { fwrite(STDERR, '-i argument is missing' . PHP_EOL); $this->showHelp(); die( esc_html( self::FAILURE_EXIT ) ); } if (!is_readable($input)) { fwrite(STDERR, 'Input file is not readable' . PHP_EOL); die( esc_html( self::FAILURE_EXIT ) ); } $css = file_get_contents($input); if ($css === false) { fwrite(STDERR, 'Input CSS code could not be retrieved from input file' . PHP_EOL); die( esc_html( self::FAILURE_EXIT ) ); } $this->setStat('original-size', strlen($css)); $cssmin = new Minifier; if (!is_null($keepSourceMapComment)) { $cssmin->keepSourceMapComment(); } if (!is_null($removeImportantComments)) { $cssmin->removeImportantComments(); } if (!is_null($linebreakPosition)) { $cssmin->setLineBreakPosition($linebreakPosition); } if (!is_null($memoryLimit)) { $cssmin->setMemoryLimit($memoryLimit); } if (!is_null($backtrackLimit)) { $cssmin->setPcreBacktrackLimit($backtrackLimit); } if (!is_null($recursionLimit)) { $cssmin->setPcreRecursionLimit($recursionLimit); } $this->setStat('compression-time-start', microtime(true)); $css = $cssmin->run($css); $this->setStat('compression-time-end', microtime(true)); $this->setStat('peak-memory-usage', memory_get_peak_usage(true)); $this->setStat('compressed-size', strlen($css)); if (!is_null($dryrun)) { $this->showStats(); die( esc_html( self::SUCCESS_EXIT ) ); } if (is_null($output)) { fwrite(STDOUT, $css . PHP_EOL); $this->showStats(); die( esc_html( self::SUCCESS_EXIT ) ); } if (!is_writable(dirname($output))) { fwrite(STDERR, 'Output file is not writable' . PHP_EOL); die( esc_html( self::FAILURE_EXIT ) ); } if (file_put_contents($output, $css) === false) { fwrite(STDERR, 'Compressed CSS code could not be saved to output file' . PHP_EOL); die( esc_html( self::FAILURE_EXIT ) ); } $this->showStats(); die( esc_html( self::SUCCESS_EXIT ) ); } protected function getOpt($opts, $options) { $value = null; if (is_string($opts)) { $opts = array($opts); } foreach ($opts as $opt) { if (array_key_exists($opt, $options)) { $value = $options[$opt]; break; } } return $value; } protected function setStat($statName, $statValue) { $this->stats[$statName] = $statValue; } protected function formatBytes($size, $precision = 2) { $base = log($size, 1024); $suffixes = array('B', 'K', 'M', 'G', 'T'); return round(pow(1024, $base - floor($base)), $precision) .' '. $suffixes[floor($base)]; } protected function formatMicroSeconds($microSecs, $precision = 2) { // ms $time = round($microSecs * 1000, $precision); if ($time >= 60 * 1000) { $time = round($time / 60 * 1000, $precision) .' m'; // m } elseif ($time >= 1000) { $time = round($time / 1000, $precision) .' s'; // s } else { $time .= ' ms'; } return $time; } protected function showStats() { $spaceSavings = round((1 - ($this->stats['compressed-size'] / $this->stats['original-size'])) * 100, 2); $compressionRatio = round($this->stats['original-size'] / $this->stats['compressed-size'], 2); $compressionTime = $this->formatMicroSeconds( $this->stats['compression-time-end'] - $this->stats['compression-time-start'] ); $peakMemoryUsage = $this->formatBytes($this->stats['peak-memory-usage']); print esc_html( << [-o ] -i|--input File containing uncompressed CSS code. -o|--output File to use to save compressed CSS code. Options: -h|--help Prints this usage information. --dry-run Performs a dry run displaying statistics. --keep-sourcemap[-comment] Keeps the sourcemap special comment in the output. --linebreak-position Splits long lines after a specific column in the output. --memory-limit Sets the memory limit for this script. --pcre-backtrack-limit Sets the PCRE backtrack limit for this script. --pcre-recursion-limit Sets the PCRE recursion limit for this script. --remove-important-comments Removes !important comments from output. EOT; } }