refactor cli and add new s3 (#5211)

lib/cli/scripts/exec.ts

@@ -0,0 +1,42 @@
+#!/usr/bin/env node
+
+/*!
+ * @license
+ * Copyright 2019 Alfresco Software, Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { spawnSync } from 'child_process';
+import { logger } from './logger';
+
+export function exec(command: string, args?: string[], opts?: { cwd?: string }) {
+    if (process.platform.startsWith('win')) {
+        args.unshift('/c', command);
+        command = 'cmd.exe';
+    }
+
+    const { status, error, stderr, stdout } = spawnSync(command, args, { ...opts });
+
+    if (status !== 0) {
+        logger.error(`Command failed: ${command} ${args.map((x) => JSON.stringify(x)).join(', ')}`);
+        if (error) {
+            logger.error('Error: ' + (error ? error.message : 'undefined'));
+        } else {
+            logger.error(`STDERR:\n${stderr}`);
+        }
+        throw error;
+    } else {
+        return stdout.toString();
+    }
+}