Split gulpfile.js into separate task files.

gulp/utils/options.js

@@ -0,0 +1,34 @@
+/*
+ * Paper.js - The Swiss Army Knife of Vector Graphics Scripting.
+ * http://paperjs.org/
+ *
+ * Copyright (c) 2011 - 2016, Juerg Lehni & Jonathan Puckey
+ * http://scratchdisk.com/ & http://jonathanpuckey.com/
+ *
+ * Distributed under the MIT license. See LICENSE file for details.
+ *
+ * All rights reserved.
+ */
+
+var gitty = require('gitty');
+
+// Require the __options object, so we have access to the version number and
+// make amendments, e.g. the release date.
+var options = require('../../src/options.js'),
+    repo = gitty('.');
+
+function git(param) {
+    var args = arguments.length === 1 ? param.split(' ')
+            : [].slice.apply(arguments),
+        operation = args.shift();
+    return new gitty.Command(repo, operation, args).execSync().trim();
+}
+
+// Get the date of the last commit from this branch for release date:
+options.date = git('log -1 --pretty=format:%ad');
+// If we're not on the master branch, append the branch name to the version:
+var branch = git('rev-parse --abbrev-ref HEAD');
+if (branch !== 'master')
+    options.version += '-' + branch;
+
+module.exports = options;