maintenance/minify.php

   1 <?php
   2 /**
   3  * Minify a file or set of files
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Maintenance
  22  */
  23 use Wikimedia\AtEase\AtEase;
  24
  25 require_once __DIR__ . '/Maintenance.php';
  26
  27 /**
  28  * Maintenance script that minifies a file or set of files.
  29  *
  30  * @ingroup Maintenance
  31  */
  32 class MinifyScript extends Maintenance {
  33         public $outDir;
  34
  35         public function __construct() {
  36                 parent::__construct();
  37                 $this->addOption( 'outfile',
  38                         'Write minified output to this file (instead of standard out).',
  39                         false, true, 'o'
  40                 );
  41                 $this->addOption( 'type',
  42                         'Override the input type (one of "js" or "css"). Defaults to file extension. ' .
  43                                 'Required if reading from standard input.',
  44                         false, true, 'o'
  45                 );
  46                 $this->addArg( 'file', 'Input file. Use - to read from standard input.' );
  47                 $this->addDescription(
  48                         "Minify one or more JavaScript or CSS files.\n" .
  49                                 "If multiple input files are given, they will be concatenated."
  50                 );
  51         }
  52
  53         public function execute() {
  54                 $outputFile = $this->getOption( 'outfile', false );
  55                 if ( $outputFile === false ) {
  56                         // Only output the minified result (or errors)
  57                         // Avoid output() because this should not honour --quiet
  58                         foreach ( $this->mArgs as $arg ) {
  59                                 print $this->minify( $arg ) . "\n";
  60                         }
  61                 } else {
  62                         $result = '';
  63                         foreach ( $this->mArgs as $arg ) {
  64                                 $this->output( "Minifying {$arg} ...\n" );
  65                                 $result .= $this->minify( $arg );
  66                         }
  67                         $this->output( "Writing to {$outputFile} ...\n" );
  68                         file_put_contents( $outputFile, $result );
  69                         $this->output( "Done!\n" );
  70                 }
  71         }
  72
  73         public function getExtension( $fileName ) {
  74                 $dotPos = strrpos( $fileName, '.' );
  75                 if ( $dotPos === false ) {
  76                         $this->fatalError( "Unknown file type ($fileName). Use --type." );
  77                 }
  78                 return substr( $fileName, $dotPos + 1 );
  79         }
  80
  81         private function readFile( $fileName ) {
  82                 if ( $fileName === '-' ) {
  83                         $inText = $this->getStdin( self::STDIN_ALL );
  84                 } else {
  85                         AtEase::suppressWarnings();
  86                         $inText = file_get_contents( $fileName );
  87                         AtEase::restoreWarnings();
  88                         if ( $inText === false ) {
  89                                 $this->fatalError( "Unable to open file $fileName for reading." );
  90                         }
  91                 }
  92                 return $inText;
  93         }
  94
  95         public function minify( $inPath ) {
  96                 $extension = $this->getOption( 'type', null ) ?? $this->getExtension( $inPath );
  97                 $inText = $this->readFile( $inPath );
  98
  99                 switch ( $extension ) {
 100                         case 'js':
 101                                 $outText = JavaScriptMinifier::minify( $inText );
 102                                 break;
 103                         case 'css':
 104                                 $outText = CSSMin::minify( $inText );
 105                                 break;
 106                         default:
 107                                 $this->fatalError( "Unsupported file type \"$extension\"." );
 108                 }
 109
 110                 return $outText;
 111         }
 112 }
 113
 114 $maintClass = MinifyScript::class;
 115 require_once RUN_MAINTENANCE_IF_MAIN;