args/lib/parse.js

Minimal toolkit for building CLIs

'use strict'

const path = require('path')
const parser = require('mri')

module.exports = function(argv, options) {
  // Override default option values
  Object.assign(this.config, options)

  if (Array.isArray(this.config.mainColor)) {
    for (const item in this.config.mainColor) {
      if (!{}.hasOwnProperty.call(this.config.mainColor, item)) {
        continue
      }

      // Chain all colors to our print method
      this.printMainColor = this.printMainColor[this.config.mainColor[item]]
    }
  } else {
    this.printMainColor = this.printMainColor[this.config.mainColor]
  }

  if (Array.isArray(this.config.subColor)) {
    for (const item in this.config.subColor) {
      if (!{}.hasOwnProperty.call(this.config.subColor, item)) {
        continue
      }

      // Chain all colors to our print method
      this.printSubColor = this.printSubColor[this.config.subColor[item]]
    }
  } else {
    this.printSubColor = this.printSubColor[this.config.subColor]
  }

  // Parse arguments using mri
  this.raw = parser(argv.slice(1), this.config.mri || this.config.minimist)
  this.binary = path.basename(this.raw._[0])

  // If default version is allowed, check for it
  if (this.config.version) {
    this.checkVersion()
  }

  // If default help is allowed, check for it
  if (this.config.help) {
    this.checkHelp()
  }

  const subCommand = this.raw._[1]
  const args = {}
  const defined = this.isDefined(subCommand, 'commands')
  const optionList = this.getOptions(defined)

  Object.assign(args, this.raw)
  args._.shift()

  // Export sub arguments of command
  this.sub = args._

  // If sub command is defined, run it
  if (defined) {
    this.runCommand(defined, optionList)
    return {}
  }

  // Hand back list of options
  return optionList
}