Merge pull request #183 from al-haras/master

add ability to use data to read from file with instance:export

cli.js

@@ -938,7 +938,7 @@ program
     .option('-i, --instance <instance>','Instance to run the export on. Can be an instance alias. ' +
         'If not specified the currently configured instance will be used.')
     .option('-j, --json', 'Formats the output in json')
-    .option('-d, --data <data>', 'Set of data in JSON format to export')
+    .option('-d, --data <data>', 'Set of data as parameter or file specified in JSON format for what to export')
     .option('-f, --file <file>', 'File to store exported data to, relative to impex/src/instance')
     .option('-j, --json', 'Formats the output in json')
     .option('-s, --sync', 'Operates in synchronous mode and waits until the operation has been finished.')
@@ -947,7 +947,7 @@ program
     .description('Run an instance export')
     .action(function(options) {
         var instance = require('./lib/instance').getInstance(options.instance);
-        var data = ( options.data ? JSON.parse(options.data) : null );
+        var data = require('./lib/export').readExportJson(options.data);
         if (!data) {
             this.missingArgument('data');
             return;

lib/export.js

@@ -0,0 +1,13 @@
+/*
+ * Copyright (c) 2020, salesforce.com, inc.
+ * All rights reserved.
+ * SPDX-License-Identifier: BSD-3-Clause
+ * For full license text, see the LICENSE file in the repo root or https://opensource.org/licenses/BSD-3-Clause
+ */
+var fs = require('fs');
+
+module.exports.readExportJson = function readExportJson(exportJson = '') {
+    if (!exportJson) return;
+    var rawdata = fs.existsSync(exportJson) ? fs.readFileSync(exportJson) : exportJson;
+    return JSON.parse(rawdata)
+}