build/tasks/dist.js

   1 "use strict";
   2
   3 module.exports = function( grunt ) {
   4         const fs = require( "fs" );
   5         const filename = grunt.option( "filename" );
   6         const distFolder = grunt.option( "dist-folder" );
   7         const distPaths = [
   8                 `${ distFolder }/${ filename }`,
   9                 `${ distFolder }/${ filename.replace( ".js", ".min.js" ) }`,
  10                 `${ distFolder }/${ filename.replace( ".js", ".min.map" ) }`
  11         ];
  12
  13         // Process files for distribution
  14         grunt.registerTask( "dist", function() {
  15                 let stored, flags, paths, nonascii;
  16
  17                 // Check for stored destination paths
  18                 // ( set in dist/.destination.json )
  19                 stored = Object.keys( grunt.config( "dst" ) );
  20
  21                 // Allow command line input as well
  22                 flags = Object.keys( this.flags );
  23
  24                 // Combine all output target paths
  25                 paths = [].concat( stored, flags ).filter( function( path ) {
  26                         return path !== "*";
  27                 } );
  28
  29                 // Ensure the dist files are pure ASCII
  30                 nonascii = false;
  31
  32                 distPaths.forEach( function( filename ) {
  33                         let i, c;
  34                         const text = fs.readFileSync( filename, "utf8" );
  35
  36                         // Ensure files use only \n for line endings, not \r\n
  37                         if ( /\x0d\x0a/.test( text ) ) {
  38                                 grunt.log.writeln( filename + ": Incorrect line endings (\\r\\n)" );
  39                                 nonascii = true;
  40                         }
  41
  42                         // Ensure only ASCII chars so script tags don't need a charset attribute
  43                         if ( text.length !== Buffer.byteLength( text, "utf8" ) ) {
  44                                 grunt.log.writeln( filename + ": Non-ASCII characters detected:" );
  45                                 for ( i = 0; i < text.length; i++ ) {
  46                                         c = text.charCodeAt( i );
  47                                         if ( c > 127 ) {
  48                                                 grunt.log.writeln( "- position " + i + ": " + c );
  49                                                 grunt.log.writeln( "-- " + text.substring( i - 20, i + 20 ) );
  50                                                 break;
  51                                         }
  52                                 }
  53                                 nonascii = true;
  54                         }
  55
  56                         // Optionally copy dist files to other locations
  57                         paths.forEach( function( path ) {
  58                                 let created;
  59
  60                                 if ( !/\/$/.test( path ) ) {
  61                                         path += "/";
  62                                 }
  63
  64                                 created = path + filename.replace( "dist/", "" );
  65                                 grunt.file.write( created, text );
  66                                 grunt.log.writeln( "File '" + created + "' created." );
  67                         } );
  68                 } );
  69
  70                 return !nonascii;
  71         } );
  72 };