53 lines
1.3 KiB
JavaScript
53 lines
1.3 KiB
JavaScript
|
/**
|
||
|
|
* Copyright 2004-present Facebook. All Rights Reserved.
|
||
|
|
*
|
||
|
|
* Wrapper on-top of `optimist` in order to properly support boolean flags
|
||
|
|
* and have a slightly less akward API.
|
||
|
|
*
|
||
|
|
* Usage example:
|
||
|
|
* var argv = parseCommandLine([{
|
||
|
|
* command: 'web',
|
||
|
|
* description: 'Run in a web browser instead of iOS',
|
||
|
|
* default: true
|
||
|
|
* }])
|
||
|
|
*/
|
||
|
|
'use strict';
|
||
|
|
|
||
|
|
var optimist = require('optimist');
|
||
|
|
|
||
|
|
function parseCommandLine(config) {
|
||
|
|
// optimist default API requires you to write the command name three time
|
||
|
|
// This is a small wrapper to accept an object instead
|
||
|
|
for (var i = 0; i < config.length; ++i) {
|
||
|
|
optimist
|
||
|
|
.boolean(config[i].command)
|
||
|
|
.default(config[i].command, config[i].default)
|
||
|
|
.describe(config[i].command, config[i].description);
|
||
|
|
}
|
||
|
|
var argv = optimist.argv;
|
||
|
|
|
||
|
|
// optimist doesn't have support for --dev=false, instead it returns 'false'
|
||
|
|
for (var i = 0; i < config.length; ++i) {
|
||
|
|
var command = config[i].command;
|
||
|
|
if (argv[command] === undefined) {
|
||
|
|
argv[command] = config[i].default;
|
||
|
|
}
|
||
|
|
if (argv[command] === 'true') {
|
||
|
|
argv[command] = true;
|
||
|
|
}
|
||
|
|
if (argv[command] === 'false') {
|
||
|
|
argv[command] = false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Show --help
|
||
|
|
if (argv.help || argv.h) {
|
||
|
|
optimist.showHelp();
|
||
|
|
process.exit();
|
||
|
|
}
|
||
|
|
|
||
|
|
return argv;
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = parseCommandLine;
|