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