70 lines
1.7 KiB
JavaScript
70 lines
1.7 KiB
JavaScript
import util from 'util'
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import Memory from './memory.mjs'
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import * as common from '../common.mjs'
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//
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// ### function Argv (options)
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// #### @options {Object} Options for this instance.
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// Constructor function for the Argv nconf store, a simple abstraction
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// around the Memory store that can read basic arguments.
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//
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const Argv = function(orgOpts) {
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let options = orgOpts || {}
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Memory.call(this, options)
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this.readOnly = true
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this.separator = options.separator || ''
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this.lowerCase = options.lowerCase || false
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this.parseValues = options.parseValues || false
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this.transform = options.transform || false
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this.prefix = options.prefix || '--'
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this.useEqualsign = options.useEqualsign || false
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if (!this.prefix) {
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throw new Error('')
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}
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}
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// Inherit from the Memory store
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util.inherits(Argv, Memory)
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//
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// ### function load ()
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// Loads the data passed in from `process.env` into this instance.
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//
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Argv.prototype.load = function () {
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this.store = {}
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let args = process.argv.slice(2)
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this.readOnly = false
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for (let i = 0; i < args.length; i++) {
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if (args[i].startsWith(this.prefix)) {
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let key = args[i].slice(this.prefix.length)
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if (this.lowerCase) {
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key = key.toLowerCase()
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}
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if (this.separator) {
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key = common.key(...key.split(this.separator))
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}
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if (this.useEqualsign) {
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let equalSignIndex = key.indexOf('=')
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if (equalSignIndex > 0) {
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this.set(key.slice(0, equalSignIndex), key.slice(equalSignIndex + 1))
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}
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} else if (args[i + 1] && !args[i + 1].startsWith(this.prefix)) {
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this.set(key, args[i + 1])
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i++
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} else {
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this.set(key, true)
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}
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}
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}
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this.readOnly = true
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return this.store
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}
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export default Argv
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