balena-cli/lib/actions/help_ts.ts
Paulo Castro b69ba0b617 Improve command usage format consistency in 'balena help' output
Change-type: patch
Signed-off-by: Paulo Castro <paulo@balena.io>
2019-11-10 00:54:22 +00:00

54 lines
1.9 KiB
TypeScript

/**
* @license
* Copyright 2019 Balena 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 { Command } from '@oclif/command';
import * as Bluebird from 'bluebird';
import * as _ from 'lodash';
import * as path from 'path';
import { capitanoizeOclifUsage } from '../utils/oclif-utils';
export async function getOclifHelpLinePairs(): Promise<
Array<[string, string]>
> {
const { convertedCommands } = await import('../preparser');
const cmdClasses: Array<Promise<typeof Command>> = [];
for (const convertedCmd of convertedCommands) {
const [topic, cmd] = convertedCmd.split(':');
const pathComponents = ['..', 'actions-oclif', topic];
if (cmd) {
pathComponents.push(cmd);
}
// note that `import(path)` returns a promise
cmdClasses.push(import(path.join(...pathComponents)));
}
return Bluebird.map(cmdClasses, getCmdUsageDescriptionLinePair);
}
function getCmdUsageDescriptionLinePair(cmdModule: any): [string, string] {
const cmd: typeof Command = cmdModule.default;
const usage = capitanoizeOclifUsage(cmd.usage);
let description = '';
// note: [^] matches any characters (including line breaks), achieving the
// same effect as the 's' regex flag which is only supported by Node 9+
const matches = /\s*([^]+?)\n[^]*/.exec(cmd.description || '');
if (matches && matches.length > 1) {
description = _.lowerFirst(_.trimEnd(matches[1], '.'));
}
return [usage, description];
}