Doodle3D-Slicer/three.js-master/utils/build/build.js
2017-06-22 13:21:07 +02:00

141 lines
3.3 KiB
JavaScript
Executable File

var fs = require("fs");
var path = require("path");
var argparse = require( "argparse" );
var uglify = require("uglify-js");
var spawn = require('child_process').spawn;
function main() {
"use strict";
var parser = new argparse.ArgumentParser();
parser.addArgument( ['--include'], { action: 'append', required: true } );
parser.addArgument( ['--externs'], { action: 'append', defaultValue: ['./externs/common.js'] } );
parser.addArgument( ['--amd'], { action: 'storeTrue', defaultValue: false } );
parser.addArgument( ['--minify'], { action: 'storeTrue', defaultValue: false } );
parser.addArgument( ['--output'], { defaultValue: '../../build/three.js' } );
parser.addArgument( ['--sourcemaps'], { action: 'storeTrue', defaultValue: true } );
var args = parser.parseArgs();
var output = args.output;
console.log(' * Building ' + output);
var sourcemap = '';
var sourcemapping = '';
if ( args.sourcemaps ){
sourcemap = output + '.map';
sourcemapping = '\n//# sourceMappingURL=three.min.js.map';
}
var buffer = [];
var sources = []; // used for source maps with minification
if ( args.amd ){
buffer.push('function ( root, factory ) {\n\n\tif ( typeof define === \'function\' && define.amd ) {\n\n\t\tdefine( [ \'exports\' ], factory );\n\n\t} else if ( typeof exports === \'object\' ) {\n\n\t\tfactory( exports );\n\n\t} else {\n\n\t\tfactory( root );\n\n\t}\n\n}( this, function ( exports ) {\n\n');
};
for ( var i = 0; i < args.include.length; i ++ ){
var contents = fs.readFileSync( './includes/' + args.include[i] + '.json', 'utf8' );
var files = JSON.parse( contents );
for ( var j = 0; j < files.length; j ++ ){
var file = '../../' + files[ j ];
buffer.push('// File:' + files[ j ]);
buffer.push('\n\n');
contents = fs.readFileSync( file, 'utf8' );
if( file.indexOf( '.glsl') >= 0 ) {
contents = 'THREE.ShaderChunk[ \'' +
path.basename( file, '.glsl' ) + '\' ] =' +
JSON.stringify( contents ) + ';\n';
}
sources.push( { file: file, contents: contents } );
buffer.push( contents );
buffer.push( '\n' );
}
}
if ( args.amd ){
buffer.push('exports.THREE = THREE;\n\n} ) );');
};
var temp = buffer.join( '' );
if ( !args.minify ){
fs.writeFileSync( output, temp, 'utf8' );
} else {
var LICENSE = "threejs.org/license";
// Parsing
var toplevel = null;
toplevel = uglify.parse( '// ' + LICENSE + '\n' );
sources.forEach( function( source ) {
toplevel = uglify.parse( source.contents, {
filename: source.file,
toplevel: toplevel
} );
} );
// Compression
toplevel.figure_out_scope();
var compressor = uglify.Compressor( {} );
var compressed_ast = toplevel.transform( compressor );
// Mangling
compressed_ast.figure_out_scope();
compressed_ast.compute_char_frequency();
compressed_ast.mangle_names();
// Output
var source_map_options = {
file: 'three.min.js',
root: 'src'
};
var source_map = uglify.SourceMap( source_map_options )
var stream = uglify.OutputStream( {
source_map: source_map,
comments: new RegExp( LICENSE )
} );
compressed_ast.print( stream );
var code = stream.toString();
fs.writeFileSync( output, code + sourcemapping, 'utf8' );
if ( args.sourcemaps ) {
fs.writeFileSync( sourcemap, source_map.toString(), 'utf8' );
}
}
}
main();