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/**
* @author Toru Nagashima
* @copyright 2016 Toru Nagashima. All rights reserved.
* See LICENSE file in root directory for full license.
*/
"use strict"
/*eslint-disable no-process-env */
//------------------------------------------------------------------------------
// Helpers
//------------------------------------------------------------------------------
const OVERWRITE_OPTION = /^--([^:]+?):([^=]+?)(?:=(.+))?$/
const CONFIG_OPTION = /^--([^=]+?)(?:=(.+))$/
const PACKAGE_CONFIG_PATTERN = /^npm_package_config_(.+)$/
const CONCAT_OPTIONS = /^-[clnprs]+$/
/**
* Overwrites a specified package config.
*
* @param {object} config - A config object to be overwritten.
* @param {string} packageName - A package name to overwrite.
* @param {string} variable - A variable name to overwrite.
* @param {string} value - A new value to overwrite.
* @returns {void}
*/
function overwriteConfig(config, packageName, variable, value) {
const scope = config[packageName] || (config[packageName] = {})
scope[variable] = value
}
/**
* Creates a package config object.
* This checks `process.env` and creates the default value.
*
* @returns {object} Created config object.
*/
function createPackageConfig() {
const retv = {}
const packageName = process.env.npm_package_name
if (!packageName) {
return retv
}
for (const key of Object.keys(process.env)) {
const m = PACKAGE_CONFIG_PATTERN.exec(key)
if (m != null) {
overwriteConfig(retv, packageName, m[1], process.env[key])
}
}
return retv
}
/**
* Adds a new group into a given list.
*
* @param {object[]} groups - A group list to add.
* @param {object} initialValues - A key-value map for the default of new value.
* @returns {void}
*/
function addGroup(groups, initialValues) {
groups.push(Object.assign(
{ parallel: false, patterns: [] },
initialValues || {}
))
}
/**
* ArgumentSet is values of parsed CLI arguments.
* This class provides the getter to get the last group.
*/
class ArgumentSet {
/**
* @param {object} initialValues - A key-value map for the default of new value.
* @param {object} options - A key-value map for the options.
*/
constructor(initialValues, options) {
this.config = {}
this.continueOnError = false
this.groups = []
this.maxParallel = 0
this.npmPath = null
this.packageConfig = createPackageConfig()
this.printLabel = false
this.printName = false
this.race = false
this.rest = []
this.silent = process.env.npm_config_loglevel === "silent"
this.singleMode = Boolean(options && options.singleMode)
addGroup(this.groups, initialValues)
}
/**
* Gets the last group.
*/
get lastGroup() {
return this.groups[this.groups.length - 1]
}
/**
* Gets "parallel" flag.
*/
get parallel() {
return this.groups.some(g => g.parallel)
}
}
/**
* Parses CLI arguments.
*
* @param {ArgumentSet} set - The parsed CLI arguments.
* @param {string[]} args - CLI arguments.
* @returns {ArgumentSet} set itself.
*/
function parseCLIArgsCore(set, args) { // eslint-disable-line complexity
LOOP:
for (let i = 0; i < args.length; ++i) {
const arg = args[i]
switch (arg) {
case "--":
set.rest = args.slice(1 + i)
break LOOP
case "--color":
case "--no-color":
// do nothing.
break
case "-c":
case "--continue-on-error":
set.continueOnError = true
break
case "-l":
case "--print-label":
set.printLabel = true
break
case "-n":
case "--print-name":
set.printName = true
break
case "-r":
case "--race":
set.race = true
break
case "--silent":
set.silent = true
break
case "--max-parallel":
set.maxParallel = parseInt(args[++i], 10)
if (!Number.isFinite(set.maxParallel) || set.maxParallel <= 0) {
throw new Error(`Invalid Option: --max-parallel ${args[i]}`)
}
break
case "-s":
case "--sequential":
case "--serial":
if (set.singleMode && arg === "-s") {
set.silent = true
break
}
if (set.singleMode) {
throw new Error(`Invalid Option: ${arg}`)
}
addGroup(set.groups)
break
case "--aggregate-output":
set.aggregateOutput = true
break
case "-p":
case "--parallel":
if (set.singleMode) {
throw new Error(`Invalid Option: ${arg}`)
}
addGroup(set.groups, { parallel: true })
break
case "--npm-path":
set.npmPath = args[++i] || null
break
default: {
let matched = null
if ((matched = OVERWRITE_OPTION.exec(arg))) {
overwriteConfig(
set.packageConfig,
matched[1],
matched[2],
matched[3] || args[++i]
)
}
else if ((matched = CONFIG_OPTION.exec(arg))) {
set.config[matched[1]] = matched[2]
}
else if (CONCAT_OPTIONS.test(arg)) {
parseCLIArgsCore(
set,
arg.slice(1).split("").map(c => `-${c}`)
)
}
else if (arg[0] === "-") {
throw new Error(`Invalid Option: ${arg}`)
}
else {
set.lastGroup.patterns.push(arg)
}
break
}
}
}
if (!set.parallel && set.aggregateOutput) {
throw new Error("Invalid Option: --aggregate-output (without parallel)")
}
if (!set.parallel && set.race) {
const race = args.indexOf("--race") !== -1 ? "--race" : "-r"
throw new Error(`Invalid Option: ${race} (without parallel)`)
}
if (!set.parallel && set.maxParallel !== 0) {
throw new Error("Invalid Option: --max-parallel (without parallel)")
}
return set
}
/**
* Parses CLI arguments.
*
* @param {string[]} args - CLI arguments.
* @param {object} initialValues - A key-value map for the default of new value.
* @param {object} options - A key-value map for the options.
* @param {boolean} options.singleMode - The flag to be single group mode.
* @returns {ArgumentSet} The parsed CLI arguments.
*/
module.exports = function parseCLIArgs(args, initialValues, options) {
return parseCLIArgsCore(new ArgumentSet(initialValues, options), args)
}
/*eslint-enable */
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