Break gulpfile into multiple subfiles

scripts/gulpfiles/git_tasks.js

@@ -0,0 +1,101 @@
+/**
+ * @license
+ * Copyright 2018 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * @fileoverview Git-related gulp tasks for Blockly.
+ */
+
+var gulp = require('gulp');
+var execSync = require('child_process').execSync;
+
+var typings = require('./typings');
+var buildTasks = require('./build_tasks');
+
+const upstream_url = "https://github.com/google/blockly.git";
+
+// Stash current state, check out the named branch, and sync with
+// google/blockly.
+function syncBranch(branchName) {
+  return function(done) {
+    execSync('git stash save -m "Stash for sync"', { stdio: 'inherit' });
+    execSync('git checkout ' + branchName, { stdio: 'inherit' });
+    execSync('git pull ' + upstream_url + ' ' + branchName,
+        { stdio: 'inherit' });
+    execSync('git push origin ' + branchName, { stdio: 'inherit' });
+    done();
+  }
+}
+
+// Stash current state, check out develop, and sync with google/blockly.
+function syncDevelop() {
+  return syncBranch('develop');
+};
+
+// Stash current state, check out master, and sync with google/blockly.
+function syncMaster() {
+  return syncBranch('master');
+};
+
+// Helper function: get a name for a rebuild branch. Format: rebuild_mm_dd_yyyy.
+function getRebuildBranchName() {
+  var date = new Date();
+  var mm = date.getMonth() + 1; // Month, 0-11
+  var dd = date.getDate(); // Day of the month, 1-31
+  var yyyy = date.getFullYear();
+  return 'rebuild_' + mm + '_' + dd + '_' + yyyy;
+};
+
+// Helper function: get a name for a rebuild branch. Format: rebuild_yyyy_mm.
+function getRCBranchName() {
+  var date = new Date();
+  var mm = date.getMonth() + 1; // Month, 0-11
+  var yyyy = date.getFullYear();
+  return 'rc_' + yyyy + '_' + mm;
+};
+
+// Recompile and push to origin.
+const recompile = gulp.series(
+  syncDevelop,
+  function(done) {
+    var branchName = getRebuildBranchName();
+    console.log('make-rebuild-branch: creating branch ' + branchName);
+    execSync('git checkout -b ' + branchName, { stdio: 'inherit' });
+    done();
+  },
+  buildTasks.build,
+  typings.typings,
+  function(done) {
+    console.log('push-rebuild-branch: committing rebuild');
+    execSync('git commit -am "Rebuild"', { stdio: 'inherit' });
+    var branchName = getRebuildBranchName();
+    execSync('git push origin ' + branchName, { stdio: 'inherit' });
+    console.log('Branch ' + branchName + ' pushed to GitHub.');
+    console.log('Next step: create a pull request against develop.');
+    done();
+    }
+);
+
+// Create and push an RC branch.
+// Note that this pushes to google/blockly.
+const createRC = gulp.series(
+  syncDevelop,
+  function(done) {
+    var branchName = getRCBranchName();
+    execSync('git checkout -b ' + branchName, { stdio: 'inherit' });
+    execSync('git push ' + upstream_url + ' ' + branchName,
+        { stdio: 'inherit' });
+    execSync('git checkout -b gh-pages');
+    execSync('git push ' + upstream_url + ' gh-pages');
+    done();
+  },
+);
+
+module.exports = {
+  syncDevelop: syncDevelop,
+  syncMaster: syncMaster,
+  createRC: createRC,
+  recompile: recompile
+}