Toolkit for CreateJSで出力された HTMLを監視し、manifestだけ別のJSファイルに書き出すよ！

Gruntfile.js

/*
 * Toolkit for CreateJSで出力された HTMLを監視し、
 * manifestだけ別のJSファイルに書き出すよ！
 * 多分、movieNameも initConfig に入れた方が良い気がするけど、とりあえず動いた！
 */

'use strict';

var movieName = 'fever2';

module.exports = function(grunt) {
	grunt.initConfig({
		watch: {
			files: ['../' + movieName + '/html/' + movieName + '.html'],
			tasks: 'extractManifest'
		}
	});
	grunt.task.registerTask('extractManifest', 'Toolkit for CreateJS Flashがはき出したHTMLからmanifestを抽出する', function() {
		var fs = require('fs');

		var filename = '../' + movieName + '/html/' + movieName + '.html';
		var fd = fs.openSync(filename, 'r');
		var stat = fs.statSync(filename);
		var bytes = fs.readSync(fd, stat.size, 0, 'ascii');
		var fileContent = bytes[0];
		fs.closeSync(fd);

		var lines = fileContent.split("\n");
		var startIndex = 0;
		var endIndex = 0;
		var searchIndex = 0;

		for (var i=0; i<lines.length; i++) {
			if (startIndex === 0) {
				var startFindIndex = lines[i].indexOf('var manifest = [');
				if (-1 != startFindIndex) {
					startIndex = searchIndex + startFindIndex;
				}
			} else if (endIndex === 0) {
				var endFindIndex = lines[i].indexOf('];');
				if (-1 != endFindIndex) {
					endIndex = searchIndex + endFindIndex;
					break;
				}
			}
			searchIndex += lines[i].length + 1;
		}

		var str = fileContent.substr(startIndex, endIndex - startIndex + 2);
		str = str.replace(/\t/g, '');

		var fd = fs.openSync('../' + movieName + '/html/' + movieName + '_manifest.js', 'w');
		fs.writeSync(fd, str, 0, 'ascii');
		fs.closeSync(fd);
	});
	grunt.loadNpmTasks('grunt-contrib-imagemin');
	grunt.loadNpmTasks('grunt-contrib-watch');
	grunt.registerTask('default', ['watch']);
};