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   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  
  24  require_once  __DIR__ . '/Maintenance.php';
  25  
  26  /**
  27   * Maintenance script that minifies a file or set of files.
  28   *
  29   * @ingroup Maintenance
  30   */
  31  class MinifyScript extends Maintenance {
  32      public $outDir;
  33  
  34  	public function __construct() {
  35          parent::__construct();
  36          $this->addOption( 'outfile',
  37              'File for output. Only a single file may be specified for input.',
  38              false, true );
  39          $this->addOption( 'outdir',
  40              "Directory for output. If this is not specified, and neither is --outfile, then the\n" .
  41              "output files will be sent to the same directories as the input files.",
  42              false, true );
  43          $this->addOption( 'js-statements-on-own-line',
  44              "Boolean value for putting statements on their own line when minifying JavaScript.",
  45              false, true );
  46          $this->addOption( 'js-max-line-length',
  47              "Maximum line length for JavaScript minification.",
  48              false, true );
  49          $this->mDescription = "Minify a file or set of files.\n\n" .
  50              "If --outfile is not specified, then the output file names will have a .min extension\n" .
  51              "added, e.g. jquery.js -> jquery.min.js.";
  52      }
  53  
  54  	public function execute() {
  55          if ( !count( $this->mArgs ) ) {
  56              $this->error( "minify.php: At least one input file must be specified." );
  57              exit( 1 );
  58          }
  59  
  60          if ( $this->hasOption( 'outfile' ) ) {
  61              if ( count( $this->mArgs ) > 1 ) {
  62                  $this->error( '--outfile may only be used with a single input file.' );
  63                  exit( 1 );
  64              }
  65  
  66              // Minify one file
  67              $this->minify( $this->getArg( 0 ), $this->getOption( 'outfile' ) );
  68  
  69              return;
  70          }
  71  
  72          $outDir = $this->getOption( 'outdir', false );
  73  
  74          foreach ( $this->mArgs as $arg ) {
  75              $inPath = realpath( $arg );
  76              $inName = basename( $inPath );
  77              $inDir = dirname( $inPath );
  78  
  79              if ( strpos( $inName, '.min.' ) !== false ) {
  80                  $this->error( "Skipping $inName\n" );
  81                  continue;
  82              }
  83  
  84              if ( !file_exists( $inPath ) ) {
  85                  $this->error( "File does not exist: $arg", true );
  86              }
  87  
  88              $extension = $this->getExtension( $inName );
  89              $outName = substr( $inName, 0, -strlen( $extension ) ) . 'min.' . $extension;
  90              if ( $outDir === false ) {
  91                  $outPath = $inDir . '/' . $outName;
  92              } else {
  93                  $outPath = $outDir . '/' . $outName;
  94              }
  95  
  96              $this->minify( $inPath, $outPath );
  97          }
  98      }
  99  
 100  	public function getExtension( $fileName ) {
 101          $dotPos = strrpos( $fileName, '.' );
 102          if ( $dotPos === false ) {
 103              $this->error( "No file extension, cannot determine type: $fileName" );
 104              exit( 1 );
 105          }
 106  
 107          return substr( $fileName, $dotPos + 1 );
 108      }
 109  
 110  	public function minify( $inPath, $outPath ) {
 111          global $wgResourceLoaderMinifierStatementsOnOwnLine, $wgResourceLoaderMinifierMaxLineLength;
 112  
 113          $extension = $this->getExtension( $inPath );
 114          $this->output( basename( $inPath ) . ' -> ' . basename( $outPath ) . '...' );
 115  
 116          $inText = file_get_contents( $inPath );
 117          if ( $inText === false ) {
 118              $this->error( "Unable to open file $inPath for reading." );
 119              exit( 1 );
 120          }
 121          $outFile = fopen( $outPath, 'w' );
 122          if ( !$outFile ) {
 123              $this->error( "Unable to open file $outPath for writing." );
 124              exit( 1 );
 125          }
 126  
 127          switch ( $extension ) {
 128              case 'js':
 129                  $outText = JavaScriptMinifier::minify( $inText,
 130                      $this->getOption( 'js-statements-on-own-line', $wgResourceLoaderMinifierStatementsOnOwnLine ),
 131                      $this->getOption( 'js-max-line-length', $wgResourceLoaderMinifierMaxLineLength )
 132                  );
 133                  break;
 134              case 'css':
 135                  $outText = CSSMin::minify( $inText );
 136                  break;
 137              default:
 138                  $this->error( "No minifier defined for extension \"$extension\"" );
 139          }
 140  
 141          fwrite( $outFile, $outText );
 142          fclose( $outFile );
 143          $this->output( " ok\n" );
 144      }
 145  }
 146  
 147  $maintClass = 'MinifyScript';
 148  require_once RUN_MAINTENANCE_IF_MAIN;