dynamic compilation config for jade and sass

Gruntfile.js

module.exports = function(grunt) {

		var glob = require('glob');

		// load plugins in 'devDependencies'
		require('load-grunt-tasks')(grunt, {
			scope: 'devDependencies'
		});

		// load a configuration file that specifies 'jade' amd 'sass' compilation settings.
		var pages = grunt.file.readJSON('compilation_config.json');

		/**
		 *
		 * @param taskName:String
		 * @param updateFilepath:String
		 * @param pageConfig: Object
		 * @param options: Object
		 */
		var createCompilationTask = function(taskName, updateFilepath, pageConfig, options) {
				var needCompile,
					taskConfig = {
						files: {}
					};

				if (options !== undefined) {
					taskConfig.options = options;
				}

				for (var pageDest in pageConfig) {
					var page = pageConfig[pageDest],
						srcList = page.src;

					for (var i = 0, len = srcList.length; i < len; i++) {
						var src = srcList[i],
							files = glob.sync(src);

						for (var j = 0, fileLen = files.length; j < fileLen; j++) {
							if (updateFilepath === files[j]) {
								needCompile = true;
								taskConfig.files[pageDest] = page.compileFile;
								break;
							}
						}
					}
				}
				
				if (needCompile) {
					grunt.config(taskName.split(':'), taskConfig);
					return [taskName];
				}
		};


		/**
		 *
		 */
		grunt.initConfig({

				project: {
						src: 'src',
						release: 'release'
				},

				connect: {
						dev: {
							options: {
								port: 8000,
								livereload: true,
								open: true,
								base: '<%= project.src %>'
							}
						}
				},

				esteWatch: {
					options: {
						livereload: {
								enabled: true,
								port: 35729,
								extensions: ['js', 'html', 'css']
						},
						dirs: [
								'<%= project.src %>/userweb/',
								'<%= project.src %>/userweb/js/**/',
								'<%= project.src %>/userweb/scss/**/'
						]
					},
					js: function(filepath) {
						var taskConfig = {
							src: filepath
						};
						grunt.config(['jshint', 'dev'], taskConfig);
						return ['jshint:dev'];
					},
					scss: function(filepath) {
						return createCompilationTask('sass:dev', filepath, pages.sass);
					},
					/*css: function(filepath) {
						var taskConfig = {
							src: filepath,
							dest: filepath.replace('.tmp/', "")
						};
						grunt.config(['autoprefixer', 'dev'], taskConfig);
						return ['autoprefixer:dev'];
					},*/
					"*": function(filepath) {
						//
					}
				},

				sass: {
					options: {
						compass: true,
						style: 'compact',
						sourcemap: 'none'
					},
					all: {
						files: [{
							expand: true,
							cwd: '<%= project.src %>/userweb/scss/',
							src: ['**/*.scss'],
							dest: '<%= project.src %>/userweb/css/',
							ext: '.css'
						}]
					}
				},

				autoprefixer: {
					options: {
						browsers: ['last 10 versions', 'ie >= 7']
					},
					all: {
						files: [{
							expand: true,
							src: '<%= project.src %>/userweb/css/*.css',
							dest: '<%= project.src %>/userweb/css/'
						}]
					}
				},

				jshint: {
					all: {
						src: [
							'<%= project.src %>/userweb/**/*.js',
							'!<%= project.src %>/userweb/**/*min.js'
						]
					}
				},

				clean: {
					release: ['<%= project.release %>/']
				},

				copy: {
					release: {
						files: [{
							expand: true,
							cwd: '<%= project.src %>/',
							dest: '<%= project.release %>/',
							src: [
									'**',
									'!**/scss/**'
							],
							dot: false
						}]
					}
				}

		});


		grunt.registerTask('default', ['connect', 'esteWatch']);
		grunt.registerTask('release', ['clean:release', 'copy:release'])

};