wishthis/node_modules/yargs/yargs.js
2022-01-21 09:28:41 +01:00

1126 lines
32 KiB
JavaScript

const argsert = require('./lib/argsert')
const assign = require('./lib/assign')
const Command = require('./lib/command')
const Completion = require('./lib/completion')
const Parser = require('yargs-parser')
const path = require('path')
const Usage = require('./lib/usage')
const Validation = require('./lib/validation')
const Y18n = require('y18n')
const objFilter = require('./lib/obj-filter')
const setBlocking = require('set-blocking')
const applyExtends = require('./lib/apply-extends')
const YError = require('./lib/yerror')
var exports = module.exports = Yargs
function Yargs (processArgs, cwd, parentRequire) {
processArgs = processArgs || [] // handle calling yargs().
const self = {}
var command = null
var completion = null
var groups = {}
var output = ''
var preservedGroups = {}
var usage = null
var validation = null
const y18n = Y18n({
directory: path.resolve(__dirname, './locales'),
updateFiles: false
})
if (!cwd) cwd = process.cwd()
self.$0 = process.argv
.slice(0, 2)
.map(function (x, i) {
// ignore the node bin, specify this in your
// bin file with #!/usr/bin/env node
if (i === 0 && /\b(node|iojs)(\.exe)?$/.test(x)) return
var b = rebase(cwd, x)
return x.match(/^(\/|([a-zA-Z]:)?\\)/) && b.length < x.length ? b : x
})
.join(' ').trim()
if (process.env._ !== undefined && process.argv[1] === process.env._) {
self.$0 = process.env._.replace(
path.dirname(process.execPath) + '/', ''
)
}
// use context object to keep track of resets, subcommand execution, etc
// submodules should modify and check the state of context as necessary
const context = { resets: -1, commands: [], files: [] }
self.getContext = function () {
return context
}
// puts yargs back into an initial state. any keys
// that have been set to "global" will not be reset
// by this action.
var options
self.resetOptions = self.reset = function (aliases) {
context.resets++
aliases = aliases || {}
options = options || {}
// put yargs back into an initial state, this
// logic is used to build a nested command
// hierarchy.
var tmpOptions = {}
tmpOptions.local = options.local ? options.local : []
tmpOptions.configObjects = options.configObjects ? options.configObjects : []
// if a key has been explicitly set as local,
// we should reset it before passing options to command.
var localLookup = {}
tmpOptions.local.forEach(function (l) {
localLookup[l] = true
;(aliases[l] || []).forEach(function (a) {
localLookup[a] = true
})
})
// preserve all groups not set to local.
preservedGroups = Object.keys(groups).reduce(function (acc, groupName) {
var keys = groups[groupName].filter(function (key) {
return !(key in localLookup)
})
if (keys.length > 0) {
acc[groupName] = keys
}
return acc
}, {})
// groups can now be reset
groups = {}
var arrayOptions = [
'array', 'boolean', 'string', 'requiresArg', 'skipValidation',
'count', 'normalize', 'number'
]
var objectOptions = [
'narg', 'key', 'alias', 'default', 'defaultDescription',
'config', 'choices', 'demandedOptions', 'demandedCommands', 'coerce'
]
arrayOptions.forEach(function (k) {
tmpOptions[k] = (options[k] || []).filter(function (k) {
return !localLookup[k]
})
})
objectOptions.forEach(function (k) {
tmpOptions[k] = objFilter(options[k], function (k, v) {
return !localLookup[k]
})
})
tmpOptions.envPrefix = options.envPrefix
options = tmpOptions
// if this is the first time being executed, create
// instances of all our helpers -- otherwise just reset.
usage = usage ? usage.reset(localLookup) : Usage(self, y18n)
validation = validation ? validation.reset(localLookup) : Validation(self, usage, y18n)
command = command ? command.reset() : Command(self, usage, validation)
if (!completion) completion = Completion(self, usage, command)
if (!strictGlobal) strict = false
completionCommand = null
output = ''
exitError = null
hasOutput = false
self.parsed = false
return self
}
self.resetOptions()
// temporary hack: allow "freezing" of reset-able state for parse(msg, cb)
var frozen
function freeze () {
frozen = {}
frozen.options = options
frozen.configObjects = options.configObjects.slice(0)
frozen.exitProcess = exitProcess
frozen.groups = groups
usage.freeze()
validation.freeze()
command.freeze()
frozen.strict = strict
frozen.completionCommand = completionCommand
frozen.output = output
frozen.exitError = exitError
frozen.hasOutput = hasOutput
frozen.parsed = self.parsed
}
function unfreeze () {
options = frozen.options
options.configObjects = frozen.configObjects
exitProcess = frozen.exitProcess
groups = frozen.groups
output = frozen.output
exitError = frozen.exitError
hasOutput = frozen.hasOutput
self.parsed = frozen.parsed
usage.unfreeze()
validation.unfreeze()
command.unfreeze()
strict = frozen.strict
completionCommand = frozen.completionCommand
parseFn = null
parseContext = null
frozen = undefined
}
self.boolean = function (keys) {
argsert('<array|string>', [keys], arguments.length)
populateParserHintArray('boolean', keys)
return self
}
self.array = function (keys) {
argsert('<array|string>', [keys], arguments.length)
populateParserHintArray('array', keys)
return self
}
self.number = function (keys) {
argsert('<array|string>', [keys], arguments.length)
populateParserHintArray('number', keys)
return self
}
self.normalize = function (keys) {
argsert('<array|string>', [keys], arguments.length)
populateParserHintArray('normalize', keys)
return self
}
self.count = function (keys) {
argsert('<array|string>', [keys], arguments.length)
populateParserHintArray('count', keys)
return self
}
self.string = function (keys) {
argsert('<array|string>', [keys], arguments.length)
populateParserHintArray('string', keys)
return self
}
self.requiresArg = function (keys) {
argsert('<array|string>', [keys], arguments.length)
populateParserHintArray('requiresArg', keys)
return self
}
self.skipValidation = function (keys) {
argsert('<array|string>', [keys], arguments.length)
populateParserHintArray('skipValidation', keys)
return self
}
function populateParserHintArray (type, keys, value) {
keys = [].concat(keys)
keys.forEach(function (key) {
options[type].push(key)
})
}
self.nargs = function (key, value) {
argsert('<string|object|array> [number]', [key, value], arguments.length)
populateParserHintObject(self.nargs, false, 'narg', key, value)
return self
}
self.choices = function (key, value) {
argsert('<object|string|array> [string|array]', [key, value], arguments.length)
populateParserHintObject(self.choices, true, 'choices', key, value)
return self
}
self.alias = function (key, value) {
argsert('<object|string|array> [string|array]', [key, value], arguments.length)
populateParserHintObject(self.alias, true, 'alias', key, value)
return self
}
// TODO: actually deprecate self.defaults.
self.default = self.defaults = function (key, value, defaultDescription) {
argsert('<object|string|array> [*] [string]', [key, value, defaultDescription], arguments.length)
if (defaultDescription) options.defaultDescription[key] = defaultDescription
if (typeof value === 'function') {
if (!options.defaultDescription[key]) options.defaultDescription[key] = usage.functionDescription(value)
value = value.call()
}
populateParserHintObject(self.default, false, 'default', key, value)
return self
}
self.describe = function (key, desc) {
argsert('<object|string|array> [string]', [key, desc], arguments.length)
populateParserHintObject(self.describe, false, 'key', key, true)
usage.describe(key, desc)
return self
}
self.demandOption = function (keys, msg) {
argsert('<object|string|array> [string]', [keys, msg], arguments.length)
populateParserHintObject(self.demandOption, false, 'demandedOptions', keys, msg)
return self
}
self.coerce = function (keys, value) {
argsert('<object|string|array> [function]', [keys, value], arguments.length)
populateParserHintObject(self.coerce, false, 'coerce', keys, value)
return self
}
function populateParserHintObject (builder, isArray, type, key, value) {
if (Array.isArray(key)) {
// an array of keys with one value ['x', 'y', 'z'], function parse () {}
var temp = {}
key.forEach(function (k) {
temp[k] = value
})
builder(temp)
} else if (typeof key === 'object') {
// an object of key value pairs: {'x': parse () {}, 'y': parse() {}}
Object.keys(key).forEach(function (k) {
builder(k, key[k])
})
} else {
// a single key value pair 'x', parse() {}
if (isArray) {
options[type][key] = (options[type][key] || []).concat(value)
} else {
options[type][key] = value
}
}
}
self.config = function (key, msg, parseFn) {
argsert('[object|string] [string|function] [function]', [key, msg, parseFn], arguments.length)
// allow a config object to be provided directly.
if (typeof key === 'object') {
key = applyExtends(key, cwd)
options.configObjects = (options.configObjects || []).concat(key)
return self
}
// allow for a custom parsing function.
if (typeof msg === 'function') {
parseFn = msg
msg = null
}
key = key || 'config'
self.describe(key, msg || usage.deferY18nLookup('Path to JSON config file'))
;(Array.isArray(key) ? key : [key]).forEach(function (k) {
options.config[k] = parseFn || true
})
return self
}
self.example = function (cmd, description) {
argsert('<string> [string]', [cmd, description], arguments.length)
usage.example(cmd, description)
return self
}
self.command = function (cmd, description, builder, handler) {
argsert('<string|array|object> [string|boolean] [function|object] [function]', [cmd, description, builder, handler], arguments.length)
command.addHandler(cmd, description, builder, handler)
return self
}
self.commandDir = function (dir, opts) {
argsert('<string> [object]', [dir, opts], arguments.length)
const req = parentRequire || require
command.addDirectory(dir, self.getContext(), req, require('get-caller-file')(), opts)
return self
}
// TODO: deprecate self.demand in favor of
// .demandCommand() .demandOption().
self.demand = self.required = self.require = function (keys, max, msg) {
// you can optionally provide a 'max' key,
// which will raise an exception if too many '_'
// options are provided.
if (Array.isArray(max)) {
max.forEach(function (key) {
self.demandOption(key, msg)
})
max = Infinity
} else if (typeof max !== 'number') {
msg = max
max = Infinity
}
if (typeof keys === 'number') {
self.demandCommand(keys, max, msg, msg)
} else if (Array.isArray(keys)) {
keys.forEach(function (key) {
self.demandOption(key, msg)
})
} else {
if (typeof msg === 'string') {
self.demandOption(keys, msg)
} else if (msg === true || typeof msg === 'undefined') {
self.demandOption(keys)
}
}
return self
}
self.demandCommand = function (min, max, minMsg, maxMsg) {
argsert('[number] [number|string] [string|null] [string|null]', [min, max, minMsg, maxMsg], arguments.length)
if (typeof min === 'undefined') min = 1
if (typeof max !== 'number') {
minMsg = max
max = Infinity
}
self.global('_', false)
options.demandedCommands._ = {
min: min,
max: max,
minMsg: minMsg,
maxMsg: maxMsg
}
return self
}
self.getDemandedOptions = function () {
argsert([], 0)
return options.demandedOptions
}
self.getDemandedCommands = function () {
argsert([], 0)
return options.demandedCommands
}
self.implies = function (key, value) {
argsert('<string|object> [string]', [key, value], arguments.length)
validation.implies(key, value)
return self
}
self.conflicts = function (key1, key2) {
argsert('<string|object> [string]', [key1, key2], arguments.length)
validation.conflicts(key1, key2)
return self
}
self.usage = function (msg, opts) {
argsert('<string|null|object> [object]', [msg, opts], arguments.length)
if (!opts && typeof msg === 'object') {
opts = msg
msg = null
}
usage.usage(msg)
if (opts) self.options(opts)
return self
}
self.epilogue = self.epilog = function (msg) {
argsert('<string>', [msg], arguments.length)
usage.epilog(msg)
return self
}
self.fail = function (f) {
argsert('<function>', [f], arguments.length)
usage.failFn(f)
return self
}
self.check = function (f, _global) {
argsert('<function> [boolean]', [f, _global], arguments.length)
validation.check(f, _global !== false)
return self
}
self.global = function (globals, global) {
argsert('<string|array> [boolean]', [globals, global], arguments.length)
globals = [].concat(globals)
if (global !== false) {
options.local = options.local.filter(function (l) {
return globals.indexOf(l) === -1
})
} else {
globals.forEach(function (g) {
if (options.local.indexOf(g) === -1) options.local.push(g)
})
}
return self
}
self.pkgConf = function (key, path) {
argsert('<string> [string]', [key, path], arguments.length)
var conf = null
// prefer cwd to require-main-filename in this method
// since we're looking for e.g. "nyc" config in nyc consumer
// rather than "yargs" config in nyc (where nyc is the main filename)
var obj = pkgUp(path || cwd)
// If an object exists in the key, add it to options.configObjects
if (obj[key] && typeof obj[key] === 'object') {
conf = applyExtends(obj[key], path || cwd, key)
options.configObjects = (options.configObjects || []).concat(conf)
}
return self
}
var pkgs = {}
function pkgUp (path) {
var npath = path || '*'
if (pkgs[npath]) return pkgs[npath]
const readPkgUp = require('read-pkg-up')
var obj = {}
try {
obj = readPkgUp.sync({
cwd: path || require('require-main-filename')(parentRequire || require),
normalize: false
})
} catch (noop) {}
pkgs[npath] = obj.pkg || {}
return pkgs[npath]
}
var parseFn = null
var parseContext = null
self.parse = function (args, shortCircuit, _parseFn) {
argsert('<string|array> [function|boolean|object] [function]', [args, shortCircuit, _parseFn], arguments.length)
// a context object can optionally be provided, this allows
// additional information to be passed to a command handler.
if (typeof shortCircuit === 'object') {
parseContext = shortCircuit
shortCircuit = _parseFn
}
// by providing a function as a second argument to
// parse you can capture output that would otherwise
// default to printing to stdout/stderr.
if (typeof shortCircuit === 'function') {
parseFn = shortCircuit
shortCircuit = null
}
// completion short-circuits the parsing process,
// skipping validation, etc.
if (!shortCircuit) processArgs = args
freeze()
if (parseFn) exitProcess = false
var parsed = self._parseArgs(args, shortCircuit)
if (parseFn) parseFn(exitError, parsed, output)
unfreeze()
return parsed
}
self._getParseContext = function () {
return parseContext || {}
}
self._hasParseCallback = function () {
return !!parseFn
}
self.option = self.options = function (key, opt) {
argsert('<string|object> [object]', [key, opt], arguments.length)
if (typeof key === 'object') {
Object.keys(key).forEach(function (k) {
self.options(k, key[k])
})
} else {
if (typeof opt !== 'object') {
opt = {}
}
options.key[key] = true // track manually set keys.
if (opt.alias) self.alias(key, opt.alias)
var demand = opt.demand || opt.required || opt.require
// deprecated, use 'demandOption' instead
if (demand) {
self.demand(key, demand)
}
if (opt.demandOption) {
self.demandOption(key, typeof opt.demandOption === 'string' ? opt.demandOption : undefined)
}
if ('config' in opt) {
self.config(key, opt.configParser)
}
if ('conflicts' in opt) {
self.conflicts(key, opt.conflicts)
}
if ('default' in opt) {
self.default(key, opt.default)
}
if ('implies' in opt) {
self.implies(key, opt.implies)
}
if ('nargs' in opt) {
self.nargs(key, opt.nargs)
}
if ('normalize' in opt) {
self.normalize(key)
}
if ('choices' in opt) {
self.choices(key, opt.choices)
}
if ('coerce' in opt) {
self.coerce(key, opt.coerce)
}
if ('group' in opt) {
self.group(key, opt.group)
}
if (opt.boolean || opt.type === 'boolean') {
self.boolean(key)
if (opt.alias) self.boolean(opt.alias)
}
if (opt.array || opt.type === 'array') {
self.array(key)
if (opt.alias) self.array(opt.alias)
}
if (opt.number || opt.type === 'number') {
self.number(key)
if (opt.alias) self.number(opt.alias)
}
if (opt.string || opt.type === 'string') {
self.string(key)
if (opt.alias) self.string(opt.alias)
}
if (opt.count || opt.type === 'count') {
self.count(key)
}
if (typeof opt.global === 'boolean') {
self.global(key, opt.global)
}
if (opt.defaultDescription) {
options.defaultDescription[key] = opt.defaultDescription
}
if (opt.skipValidation) {
self.skipValidation(key)
}
var desc = opt.describe || opt.description || opt.desc
if (desc) {
self.describe(key, desc)
}
if (opt.requiresArg) {
self.requiresArg(key)
}
}
return self
}
self.getOptions = function () {
return options
}
self.group = function (opts, groupName) {
argsert('<string|array> <string>', [opts, groupName], arguments.length)
var existing = preservedGroups[groupName] || groups[groupName]
if (preservedGroups[groupName]) {
// we now only need to track this group name in groups.
delete preservedGroups[groupName]
}
var seen = {}
groups[groupName] = (existing || []).concat(opts).filter(function (key) {
if (seen[key]) return false
return (seen[key] = true)
})
return self
}
self.getGroups = function () {
// combine explicit and preserved groups. explicit groups should be first
return assign(groups, preservedGroups)
}
// as long as options.envPrefix is not undefined,
// parser will apply env vars matching prefix to argv
self.env = function (prefix) {
argsert('[string|boolean]', [prefix], arguments.length)
if (prefix === false) options.envPrefix = undefined
else options.envPrefix = prefix || ''
return self
}
self.wrap = function (cols) {
argsert('<number|null>', [cols], arguments.length)
usage.wrap(cols)
return self
}
var strict = false
var strictGlobal = false
self.strict = function (global) {
argsert('[boolean]', [global], arguments.length)
strict = true
strictGlobal = global !== false
return self
}
self.getStrict = function () {
return strict
}
self.showHelp = function (level) {
argsert('[string|function]', [level], arguments.length)
if (!self.parsed) self._parseArgs(processArgs) // run parser, if it has not already been executed.
usage.showHelp(level)
return self
}
var versionOpt = null
self.version = function (opt, msg, ver) {
argsert('[string|function] [string|function] [string]', [opt, msg, ver], arguments.length)
if (arguments.length === 0) {
ver = guessVersion()
opt = 'version'
} else if (arguments.length === 1) {
ver = opt
opt = 'version'
} else if (arguments.length === 2) {
ver = msg
msg = null
}
versionOpt = opt
msg = msg || usage.deferY18nLookup('Show version number')
usage.version(ver || undefined)
self.boolean(versionOpt)
self.describe(versionOpt, msg)
return self
}
function guessVersion () {
var obj = pkgUp()
return obj.version || 'unknown'
}
var helpOpt = null
var useHelpOptAsCommand = false // a call to .help() will enable this
self.addHelpOpt = self.help = function (opt, msg, addImplicitCmd) {
argsert('[string|boolean] [string|boolean] [boolean]', [opt, msg, addImplicitCmd], arguments.length)
// argument shuffle
if (arguments.length === 0) {
useHelpOptAsCommand = true
} else if (arguments.length === 1) {
if (typeof opt === 'boolean') {
useHelpOptAsCommand = opt
opt = null
} else {
useHelpOptAsCommand = true
}
} else if (arguments.length === 2) {
if (typeof msg === 'boolean') {
useHelpOptAsCommand = msg
msg = null
} else {
useHelpOptAsCommand = true
}
} else {
useHelpOptAsCommand = Boolean(addImplicitCmd)
}
// use arguments, fallback to defaults for opt and msg
helpOpt = opt || 'help'
self.boolean(helpOpt)
self.describe(helpOpt, msg || usage.deferY18nLookup('Show help'))
return self
}
self.showHelpOnFail = function (enabled, message) {
argsert('[boolean|string] [string]', [enabled, message], arguments.length)
usage.showHelpOnFail(enabled, message)
return self
}
var exitProcess = true
self.exitProcess = function (enabled) {
argsert('[boolean]', [enabled], arguments.length)
if (typeof enabled !== 'boolean') {
enabled = true
}
exitProcess = enabled
return self
}
self.getExitProcess = function () {
return exitProcess
}
var completionCommand = null
self.completion = function (cmd, desc, fn) {
argsert('[string] [string|boolean|function] [function]', [cmd, desc, fn], arguments.length)
// a function to execute when generating
// completions can be provided as the second
// or third argument to completion.
if (typeof desc === 'function') {
fn = desc
desc = null
}
// register the completion command.
completionCommand = cmd || 'completion'
if (!desc && desc !== false) {
desc = 'generate bash completion script'
}
self.command(completionCommand, desc)
// a function can be provided
if (fn) completion.registerFunction(fn)
return self
}
self.showCompletionScript = function ($0) {
argsert('[string]', [$0], arguments.length)
$0 = $0 || self.$0
_logger.log(completion.generateCompletionScript($0))
return self
}
self.getCompletion = function (args, done) {
argsert('<array> <function>', [args, done], arguments.length)
completion.getCompletion(args, done)
}
self.locale = function (locale) {
argsert('[string]', [locale], arguments.length)
if (arguments.length === 0) {
guessLocale()
return y18n.getLocale()
}
detectLocale = false
y18n.setLocale(locale)
return self
}
self.updateStrings = self.updateLocale = function (obj) {
argsert('<object>', [obj], arguments.length)
detectLocale = false
y18n.updateLocale(obj)
return self
}
var detectLocale = true
self.detectLocale = function (detect) {
argsert('<boolean>', [detect], arguments.length)
detectLocale = detect
return self
}
self.getDetectLocale = function () {
return detectLocale
}
var hasOutput = false
var exitError = null
// maybe exit, always capture
// context about why we wanted to exit.
self.exit = function (code, err) {
hasOutput = true
exitError = err
if (exitProcess) process.exit(code)
}
// we use a custom logger that buffers output,
// so that we can print to non-CLIs, e.g., chat-bots.
var _logger = {
log: function () {
const args = []
for (var i = 0; i < arguments.length; i++) args.push(arguments[i])
if (!self._hasParseCallback()) console.log.apply(console, args)
hasOutput = true
if (output.length) output += '\n'
output += args.join(' ')
},
error: function () {
const args = []
for (var i = 0; i < arguments.length; i++) args.push(arguments[i])
if (!self._hasParseCallback()) console.error.apply(console, args)
hasOutput = true
if (output.length) output += '\n'
output += args.join(' ')
}
}
self._getLoggerInstance = function () {
return _logger
}
// has yargs output an error our help
// message in the current execution context.
self._hasOutput = function () {
return hasOutput
}
self._setHasOutput = function () {
hasOutput = true
}
var recommendCommands
self.recommendCommands = function (recommend) {
argsert('[boolean]', [recommend], arguments.length)
recommendCommands = typeof recommend === 'boolean' ? recommend : true
return self
}
self.getUsageInstance = function () {
return usage
}
self.getValidationInstance = function () {
return validation
}
self.getCommandInstance = function () {
return command
}
self.terminalWidth = function () {
argsert([], 0)
return typeof process.stdout.columns !== 'undefined' ? process.stdout.columns : null
}
Object.defineProperty(self, 'argv', {
get: function () {
return self._parseArgs(processArgs)
},
enumerable: true
})
self._parseArgs = function (args, shortCircuit, _skipValidation) {
var skipValidation = !!_skipValidation
args = args || processArgs
options.__ = y18n.__
options.configuration = pkgUp()['yargs'] || {}
const parsed = Parser.detailed(args, options)
var argv = parsed.argv
if (parseContext) argv = assign(argv, parseContext)
var aliases = parsed.aliases
argv.$0 = self.$0
self.parsed = parsed
try {
guessLocale() // guess locale lazily, so that it can be turned off in chain.
// while building up the argv object, there
// are two passes through the parser. If completion
// is being performed short-circuit on the first pass.
if (shortCircuit) {
return argv
}
if (argv._.length) {
// check for helpOpt in argv._ before running commands
// assumes helpOpt must be valid if useHelpOptAsCommand is true
if (useHelpOptAsCommand) {
// consider any multi-char helpOpt alias as a valid help command
// unless all helpOpt aliases are single-char
// note that parsed.aliases is a normalized bidirectional map :)
var helpCmds = [helpOpt].concat(aliases[helpOpt] || [])
var multiCharHelpCmds = helpCmds.filter(function (k) {
return k.length > 1
})
if (multiCharHelpCmds.length) helpCmds = multiCharHelpCmds
// look for and strip any helpCmds from argv._
argv._ = argv._.filter(function (cmd) {
if (~helpCmds.indexOf(cmd)) {
argv[helpOpt] = true
return false
}
return true
})
}
// if there's a handler associated with a
// command defer processing to it.
var handlerKeys = command.getCommands()
if (handlerKeys.length) {
var firstUnknownCommand
for (var i = 0, cmd; argv._[i] !== undefined; i++) {
cmd = String(argv._[i])
if (~handlerKeys.indexOf(cmd) && cmd !== completionCommand) {
setPlaceholderKeys(argv)
return command.runCommand(cmd, self, parsed)
} else if (!firstUnknownCommand && cmd !== completionCommand) {
firstUnknownCommand = cmd
}
}
// run the default command, if defined
if (command.hasDefaultCommand() && !argv[helpOpt]) {
setPlaceholderKeys(argv)
return command.runCommand(null, self, parsed)
}
// recommend a command if recommendCommands() has
// been enabled, and no commands were found to execute
if (recommendCommands && firstUnknownCommand) {
validation.recommendCommands(firstUnknownCommand, handlerKeys)
}
}
// generate a completion script for adding to ~/.bashrc.
if (completionCommand && ~argv._.indexOf(completionCommand) && !argv[completion.completionKey]) {
if (exitProcess) setBlocking(true)
self.showCompletionScript()
self.exit(0)
}
} else if (command.hasDefaultCommand() && !argv[helpOpt]) {
setPlaceholderKeys(argv)
return command.runCommand(null, self, parsed)
}
// we must run completions first, a user might
// want to complete the --help or --version option.
if (completion.completionKey in argv) {
if (exitProcess) setBlocking(true)
// we allow for asynchronous completions,
// e.g., loading in a list of commands from an API.
var completionArgs = args.slice(args.indexOf('--' + completion.completionKey) + 1)
completion.getCompletion(completionArgs, function (completions) {
;(completions || []).forEach(function (completion) {
_logger.log(completion)
})
self.exit(0)
})
return setPlaceholderKeys(argv)
}
// Handle 'help' and 'version' options
// if we haven't already output help!
if (!hasOutput) {
Object.keys(argv).forEach(function (key) {
if (key === helpOpt && argv[key]) {
if (exitProcess) setBlocking(true)
skipValidation = true
self.showHelp('log')
self.exit(0)
} else if (key === versionOpt && argv[key]) {
if (exitProcess) setBlocking(true)
skipValidation = true
usage.showVersion()
self.exit(0)
}
})
}
// Check if any of the options to skip validation were provided
if (!skipValidation && options.skipValidation.length > 0) {
skipValidation = Object.keys(argv).some(function (key) {
return options.skipValidation.indexOf(key) >= 0 && argv[key] === true
})
}
// If the help or version options where used and exitProcess is false,
// or if explicitly skipped, we won't run validations.
if (!skipValidation) {
if (parsed.error) throw new YError(parsed.error.message)
// if we're executed via bash completion, don't
// bother with validation.
if (!argv[completion.completionKey]) {
self._runValidation(argv, aliases, {}, parsed.error)
}
}
} catch (err) {
if (err instanceof YError) usage.fail(err.message, err)
else throw err
}
return setPlaceholderKeys(argv)
}
self._runValidation = function (argv, aliases, positionalMap, parseErrors) {
if (parseErrors) throw new YError(parseErrors.message)
validation.nonOptionCount(argv)
validation.missingArgumentValue(argv)
validation.requiredArguments(argv)
if (strict) validation.unknownArguments(argv, aliases, positionalMap)
validation.customChecks(argv, aliases)
validation.limitedChoices(argv)
validation.implications(argv)
validation.conflicting(argv)
}
function guessLocale () {
if (!detectLocale) return
try {
const osLocale = require('os-locale')
self.locale(osLocale.sync({ spawn: false }))
} catch (err) {
// if we explode looking up locale just noop
// we'll keep using the default language 'en'.
}
}
function setPlaceholderKeys (argv) {
Object.keys(options.key).forEach(function (key) {
// don't set placeholder keys for dot
// notation options 'foo.bar'.
if (~key.indexOf('.')) return
if (typeof argv[key] === 'undefined') argv[key] = undefined
})
return argv
}
return self
}
// rebase an absolute path to a relative one with respect to a base directory
// exported for tests
exports.rebase = rebase
function rebase (base, dir) {
return path.relative(base, dir)
}