1029 lines
33 KiB
JavaScript
1029 lines
33 KiB
JavaScript
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const camelCase = require('camelcase')
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const decamelize = require('decamelize')
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const path = require('path')
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const tokenizeArgString = require('./lib/tokenize-arg-string')
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const util = require('util')
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function parse (args, opts) {
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opts = Object.assign(Object.create(null), opts)
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// allow a string argument to be passed in rather
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// than an argv array.
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args = tokenizeArgString(args)
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// aliases might have transitive relationships, normalize this.
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const aliases = combineAliases(Object.assign(Object.create(null), opts.alias))
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const configuration = Object.assign({
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'boolean-negation': true,
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'camel-case-expansion': true,
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'combine-arrays': false,
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'dot-notation': true,
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'duplicate-arguments-array': true,
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'flatten-duplicate-arrays': true,
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'greedy-arrays': true,
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'halt-at-non-option': false,
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'nargs-eats-options': false,
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'negation-prefix': 'no-',
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'parse-numbers': true,
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'populate--': false,
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'set-placeholder-key': false,
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'short-option-groups': true,
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'strip-aliased': false,
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'strip-dashed': false,
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'unknown-options-as-args': false
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}, opts.configuration)
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const defaults = Object.assign(Object.create(null), opts.default)
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const configObjects = opts.configObjects || []
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const envPrefix = opts.envPrefix
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const notFlagsOption = configuration['populate--']
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const notFlagsArgv = notFlagsOption ? '--' : '_'
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const newAliases = Object.create(null)
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const defaulted = Object.create(null)
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// allow a i18n handler to be passed in, default to a fake one (util.format).
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const __ = opts.__ || util.format
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const flags = {
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aliases: Object.create(null),
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arrays: Object.create(null),
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bools: Object.create(null),
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strings: Object.create(null),
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numbers: Object.create(null),
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counts: Object.create(null),
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normalize: Object.create(null),
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configs: Object.create(null),
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nargs: Object.create(null),
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coercions: Object.create(null),
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keys: []
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}
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const negative = /^-([0-9]+(\.[0-9]+)?|\.[0-9]+)$/
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const negatedBoolean = new RegExp('^--' + configuration['negation-prefix'] + '(.+)')
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;[].concat(opts.array).filter(Boolean).forEach(function (opt) {
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const key = opt.key || opt
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// assign to flags[bools|strings|numbers]
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const assignment = Object.keys(opt).map(function (key) {
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return ({
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boolean: 'bools',
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string: 'strings',
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number: 'numbers'
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})[key]
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}).filter(Boolean).pop()
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// assign key to be coerced
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if (assignment) {
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flags[assignment][key] = true
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}
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flags.arrays[key] = true
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flags.keys.push(key)
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})
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;[].concat(opts.boolean).filter(Boolean).forEach(function (key) {
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flags.bools[key] = true
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flags.keys.push(key)
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})
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;[].concat(opts.string).filter(Boolean).forEach(function (key) {
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flags.strings[key] = true
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flags.keys.push(key)
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})
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;[].concat(opts.number).filter(Boolean).forEach(function (key) {
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flags.numbers[key] = true
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flags.keys.push(key)
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})
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;[].concat(opts.count).filter(Boolean).forEach(function (key) {
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flags.counts[key] = true
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flags.keys.push(key)
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})
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;[].concat(opts.normalize).filter(Boolean).forEach(function (key) {
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flags.normalize[key] = true
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flags.keys.push(key)
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})
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Object.keys(opts.narg || {}).forEach(function (k) {
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flags.nargs[k] = opts.narg[k]
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flags.keys.push(k)
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})
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Object.keys(opts.coerce || {}).forEach(function (k) {
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flags.coercions[k] = opts.coerce[k]
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flags.keys.push(k)
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})
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if (Array.isArray(opts.config) || typeof opts.config === 'string') {
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;[].concat(opts.config).filter(Boolean).forEach(function (key) {
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flags.configs[key] = true
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})
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} else {
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Object.keys(opts.config || {}).forEach(function (k) {
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flags.configs[k] = opts.config[k]
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})
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}
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// create a lookup table that takes into account all
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// combinations of aliases: {f: ['foo'], foo: ['f']}
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extendAliases(opts.key, aliases, opts.default, flags.arrays)
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// apply default values to all aliases.
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Object.keys(defaults).forEach(function (key) {
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(flags.aliases[key] || []).forEach(function (alias) {
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defaults[alias] = defaults[key]
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})
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})
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let error = null
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checkConfiguration()
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let notFlags = []
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const argv = Object.assign(Object.create(null), { _: [] })
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// TODO(bcoe): for the first pass at removing object prototype we didn't
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// remove all prototypes from objects returned by this API, we might want
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// to gradually move towards doing so.
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const argvReturn = {}
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for (let i = 0; i < args.length; i++) {
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const arg = args[i]
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let broken
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let key
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let letters
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let m
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let next
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let value
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// any unknown option (except for end-of-options, "--")
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if (arg !== '--' && isUnknownOptionAsArg(arg)) {
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argv._.push(arg)
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// -- separated by =
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} else if (arg.match(/^--.+=/) || (
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!configuration['short-option-groups'] && arg.match(/^-.+=/)
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)) {
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// Using [\s\S] instead of . because js doesn't support the
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// 'dotall' regex modifier. See:
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// http://stackoverflow.com/a/1068308/13216
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m = arg.match(/^--?([^=]+)=([\s\S]*)$/)
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// arrays format = '--f=a b c'
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if (checkAllAliases(m[1], flags.arrays)) {
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i = eatArray(i, m[1], args, m[2])
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} else if (checkAllAliases(m[1], flags.nargs) !== false) {
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// nargs format = '--f=monkey washing cat'
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i = eatNargs(i, m[1], args, m[2])
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} else {
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setArg(m[1], m[2])
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}
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} else if (arg.match(negatedBoolean) && configuration['boolean-negation']) {
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key = arg.match(negatedBoolean)[1]
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setArg(key, checkAllAliases(key, flags.arrays) ? [false] : false)
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// -- separated by space.
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} else if (arg.match(/^--.+/) || (
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!configuration['short-option-groups'] && arg.match(/^-[^-]+/)
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)) {
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key = arg.match(/^--?(.+)/)[1]
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if (checkAllAliases(key, flags.arrays)) {
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// array format = '--foo a b c'
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i = eatArray(i, key, args)
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} else if (checkAllAliases(key, flags.nargs) !== false) {
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// nargs format = '--foo a b c'
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// should be truthy even if: flags.nargs[key] === 0
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i = eatNargs(i, key, args)
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} else {
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next = args[i + 1]
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if (next !== undefined && (!next.match(/^-/) ||
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next.match(negative)) &&
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!checkAllAliases(key, flags.bools) &&
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!checkAllAliases(key, flags.counts)) {
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setArg(key, next)
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i++
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} else if (/^(true|false)$/.test(next)) {
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setArg(key, next)
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i++
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} else {
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setArg(key, defaultValue(key))
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}
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}
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// dot-notation flag separated by '='.
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} else if (arg.match(/^-.\..+=/)) {
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m = arg.match(/^-([^=]+)=([\s\S]*)$/)
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setArg(m[1], m[2])
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// dot-notation flag separated by space.
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} else if (arg.match(/^-.\..+/) && !arg.match(negative)) {
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next = args[i + 1]
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key = arg.match(/^-(.\..+)/)[1]
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if (next !== undefined && !next.match(/^-/) &&
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!checkAllAliases(key, flags.bools) &&
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!checkAllAliases(key, flags.counts)) {
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setArg(key, next)
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i++
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} else {
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setArg(key, defaultValue(key))
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}
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} else if (arg.match(/^-[^-]+/) && !arg.match(negative)) {
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letters = arg.slice(1, -1).split('')
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broken = false
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for (let j = 0; j < letters.length; j++) {
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next = arg.slice(j + 2)
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if (letters[j + 1] && letters[j + 1] === '=') {
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value = arg.slice(j + 3)
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key = letters[j]
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if (checkAllAliases(key, flags.arrays)) {
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// array format = '-f=a b c'
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i = eatArray(i, key, args, value)
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} else if (checkAllAliases(key, flags.nargs) !== false) {
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// nargs format = '-f=monkey washing cat'
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i = eatNargs(i, key, args, value)
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} else {
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setArg(key, value)
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}
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broken = true
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break
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}
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if (next === '-') {
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setArg(letters[j], next)
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continue
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}
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// current letter is an alphabetic character and next value is a number
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if (/[A-Za-z]/.test(letters[j]) &&
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/^-?\d+(\.\d*)?(e-?\d+)?$/.test(next)) {
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setArg(letters[j], next)
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broken = true
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break
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}
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if (letters[j + 1] && letters[j + 1].match(/\W/)) {
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setArg(letters[j], next)
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broken = true
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break
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} else {
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setArg(letters[j], defaultValue(letters[j]))
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}
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}
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key = arg.slice(-1)[0]
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if (!broken && key !== '-') {
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if (checkAllAliases(key, flags.arrays)) {
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// array format = '-f a b c'
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i = eatArray(i, key, args)
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} else if (checkAllAliases(key, flags.nargs) !== false) {
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// nargs format = '-f a b c'
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// should be truthy even if: flags.nargs[key] === 0
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i = eatNargs(i, key, args)
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} else {
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next = args[i + 1]
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if (next !== undefined && (!/^(-|--)[^-]/.test(next) ||
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next.match(negative)) &&
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!checkAllAliases(key, flags.bools) &&
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!checkAllAliases(key, flags.counts)) {
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setArg(key, next)
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i++
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} else if (/^(true|false)$/.test(next)) {
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setArg(key, next)
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i++
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} else {
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setArg(key, defaultValue(key))
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}
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}
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}
|
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} else if (arg.match(/^-[0-9]$/) &&
|
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arg.match(negative) &&
|
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checkAllAliases(arg.slice(1), flags.bools)) {
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// single-digit boolean alias, e.g: xargs -0
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key = arg.slice(1)
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setArg(key, defaultValue(key))
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} else if (arg === '--') {
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notFlags = args.slice(i + 1)
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break
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} else if (configuration['halt-at-non-option']) {
|
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notFlags = args.slice(i)
|
||
|
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break
|
||
|
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} else {
|
||
|
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argv._.push(maybeCoerceNumber('_', arg))
|
||
|
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}
|
||
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}
|
||
|
|
|
||
|
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// order of precedence:
|
||
|
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// 1. command line arg
|
||
|
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// 2. value from env var
|
||
|
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// 3. value from config file
|
||
|
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// 4. value from config objects
|
||
|
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// 5. configured default value
|
||
|
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applyEnvVars(argv, true) // special case: check env vars that point to config file
|
||
|
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applyEnvVars(argv, false)
|
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|
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setConfig(argv)
|
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|
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setConfigObjects()
|
||
|
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applyDefaultsAndAliases(argv, flags.aliases, defaults, true)
|
||
|
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applyCoercions(argv)
|
||
|
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if (configuration['set-placeholder-key']) setPlaceholderKeys(argv)
|
||
|
|
|
||
|
|
// for any counts either not in args or without an explicit default, set to 0
|
||
|
|
Object.keys(flags.counts).forEach(function (key) {
|
||
|
|
if (!hasKey(argv, key.split('.'))) setArg(key, 0)
|
||
|
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})
|
||
|
|
|
||
|
|
// '--' defaults to undefined.
|
||
|
|
if (notFlagsOption && notFlags.length) argv[notFlagsArgv] = []
|
||
|
|
notFlags.forEach(function (key) {
|
||
|
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argv[notFlagsArgv].push(key)
|
||
|
|
})
|
||
|
|
|
||
|
|
if (configuration['camel-case-expansion'] && configuration['strip-dashed']) {
|
||
|
|
Object.keys(argv).filter(key => key !== '--' && key.includes('-')).forEach(key => {
|
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|
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delete argv[key]
|
||
|
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})
|
||
|
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}
|
||
|
|
|
||
|
|
if (configuration['strip-aliased']) {
|
||
|
|
;[].concat(...Object.keys(aliases).map(k => aliases[k])).forEach(alias => {
|
||
|
|
if (configuration['camel-case-expansion']) {
|
||
|
|
delete argv[alias.split('.').map(prop => camelCase(prop)).join('.')]
|
||
|
|
}
|
||
|
|
|
||
|
|
delete argv[alias]
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
// how many arguments should we consume, based
|
||
|
|
// on the nargs option?
|
||
|
|
function eatNargs (i, key, args, argAfterEqualSign) {
|
||
|
|
let ii
|
||
|
|
let toEat = checkAllAliases(key, flags.nargs)
|
||
|
|
// NaN has a special meaning for the array type, indicating that one or
|
||
|
|
// more values are expected.
|
||
|
|
toEat = isNaN(toEat) ? 1 : toEat
|
||
|
|
|
||
|
|
if (toEat === 0) {
|
||
|
|
if (!isUndefined(argAfterEqualSign)) {
|
||
|
|
error = Error(__('Argument unexpected for: %s', key))
|
||
|
|
}
|
||
|
|
setArg(key, defaultValue(key))
|
||
|
|
return i
|
||
|
|
}
|
||
|
|
|
||
|
|
let available = isUndefined(argAfterEqualSign) ? 0 : 1
|
||
|
|
if (configuration['nargs-eats-options']) {
|
||
|
|
// classic behavior, yargs eats positional and dash arguments.
|
||
|
|
if (args.length - (i + 1) + available < toEat) {
|
||
|
|
error = Error(__('Not enough arguments following: %s', key))
|
||
|
|
}
|
||
|
|
available = toEat
|
||
|
|
} else {
|
||
|
|
// nargs will not consume flag arguments, e.g., -abc, --foo,
|
||
|
|
// and terminates when one is observed.
|
||
|
|
for (ii = i + 1; ii < args.length; ii++) {
|
||
|
|
if (!args[ii].match(/^-[^0-9]/) || args[ii].match(negative) || isUnknownOptionAsArg(args[ii])) available++
|
||
|
|
else break
|
||
|
|
}
|
||
|
|
if (available < toEat) error = Error(__('Not enough arguments following: %s', key))
|
||
|
|
}
|
||
|
|
|
||
|
|
let consumed = Math.min(available, toEat)
|
||
|
|
if (!isUndefined(argAfterEqualSign) && consumed > 0) {
|
||
|
|
setArg(key, argAfterEqualSign)
|
||
|
|
consumed--
|
||
|
|
}
|
||
|
|
for (ii = i + 1; ii < (consumed + i + 1); ii++) {
|
||
|
|
setArg(key, args[ii])
|
||
|
|
}
|
||
|
|
|
||
|
|
return (i + consumed)
|
||
|
|
}
|
||
|
|
|
||
|
|
// if an option is an array, eat all non-hyphenated arguments
|
||
|
|
// following it... YUM!
|
||
|
|
// e.g., --foo apple banana cat becomes ["apple", "banana", "cat"]
|
||
|
|
function eatArray (i, key, args, argAfterEqualSign) {
|
||
|
|
let argsToSet = []
|
||
|
|
let next = argAfterEqualSign || args[i + 1]
|
||
|
|
// If both array and nargs are configured, enforce the nargs count:
|
||
|
|
const nargsCount = checkAllAliases(key, flags.nargs)
|
||
|
|
|
||
|
|
if (checkAllAliases(key, flags.bools) && !(/^(true|false)$/.test(next))) {
|
||
|
|
argsToSet.push(true)
|
||
|
|
} else if (isUndefined(next) ||
|
||
|
|
(isUndefined(argAfterEqualSign) && /^-/.test(next) && !negative.test(next) && !isUnknownOptionAsArg(next))) {
|
||
|
|
// for keys without value ==> argsToSet remains an empty []
|
||
|
|
// set user default value, if available
|
||
|
|
if (defaults[key] !== undefined) {
|
||
|
|
const defVal = defaults[key]
|
||
|
|
argsToSet = Array.isArray(defVal) ? defVal : [defVal]
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
// value in --option=value is eaten as is
|
||
|
|
if (!isUndefined(argAfterEqualSign)) {
|
||
|
|
argsToSet.push(processValue(key, argAfterEqualSign))
|
||
|
|
}
|
||
|
|
for (let ii = i + 1; ii < args.length; ii++) {
|
||
|
|
if ((!configuration['greedy-arrays'] && argsToSet.length > 0) ||
|
||
|
|
(nargsCount && argsToSet.length >= nargsCount)) break
|
||
|
|
next = args[ii]
|
||
|
|
if (/^-/.test(next) && !negative.test(next) && !isUnknownOptionAsArg(next)) break
|
||
|
|
i = ii
|
||
|
|
argsToSet.push(processValue(key, next))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// If both array and nargs are configured, create an error if less than
|
||
|
|
// nargs positionals were found. NaN has special meaning, indicating
|
||
|
|
// that at least one value is required (more are okay).
|
||
|
|
if ((nargsCount && argsToSet.length < nargsCount) ||
|
||
|
|
(isNaN(nargsCount) && argsToSet.length === 0)) {
|
||
|
|
error = Error(__('Not enough arguments following: %s', key))
|
||
|
|
}
|
||
|
|
|
||
|
|
setArg(key, argsToSet)
|
||
|
|
return i
|
||
|
|
}
|
||
|
|
|
||
|
|
function setArg (key, val) {
|
||
|
|
if (/-/.test(key) && configuration['camel-case-expansion']) {
|
||
|
|
const alias = key.split('.').map(function (prop) {
|
||
|
|
return camelCase(prop)
|
||
|
|
}).join('.')
|
||
|
|
addNewAlias(key, alias)
|
||
|
|
}
|
||
|
|
|
||
|
|
const value = processValue(key, val)
|
||
|
|
const splitKey = key.split('.')
|
||
|
|
setKey(argv, splitKey, value)
|
||
|
|
|
||
|
|
// handle populating aliases of the full key
|
||
|
|
if (flags.aliases[key]) {
|
||
|
|
flags.aliases[key].forEach(function (x) {
|
||
|
|
x = x.split('.')
|
||
|
|
setKey(argv, x, value)
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
// handle populating aliases of the first element of the dot-notation key
|
||
|
|
if (splitKey.length > 1 && configuration['dot-notation']) {
|
||
|
|
;(flags.aliases[splitKey[0]] || []).forEach(function (x) {
|
||
|
|
x = x.split('.')
|
||
|
|
|
||
|
|
// expand alias with nested objects in key
|
||
|
|
const a = [].concat(splitKey)
|
||
|
|
a.shift() // nuke the old key.
|
||
|
|
x = x.concat(a)
|
||
|
|
|
||
|
|
setKey(argv, x, value)
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
// Set normalize getter and setter when key is in 'normalize' but isn't an array
|
||
|
|
if (checkAllAliases(key, flags.normalize) && !checkAllAliases(key, flags.arrays)) {
|
||
|
|
const keys = [key].concat(flags.aliases[key] || [])
|
||
|
|
keys.forEach(function (key) {
|
||
|
|
Object.defineProperty(argvReturn, key, {
|
||
|
|
enumerable: true,
|
||
|
|
get () {
|
||
|
|
return val
|
||
|
|
},
|
||
|
|
set (value) {
|
||
|
|
val = typeof value === 'string' ? path.normalize(value) : value
|
||
|
|
}
|
||
|
|
})
|
||
|
|
})
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function addNewAlias (key, alias) {
|
||
|
|
if (!(flags.aliases[key] && flags.aliases[key].length)) {
|
||
|
|
flags.aliases[key] = [alias]
|
||
|
|
newAliases[alias] = true
|
||
|
|
}
|
||
|
|
if (!(flags.aliases[alias] && flags.aliases[alias].length)) {
|
||
|
|
addNewAlias(alias, key)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function processValue (key, val) {
|
||
|
|
// strings may be quoted, clean this up as we assign values.
|
||
|
|
if (typeof val === 'string' &&
|
||
|
|
(val[0] === "'" || val[0] === '"') &&
|
||
|
|
val[val.length - 1] === val[0]
|
||
|
|
) {
|
||
|
|
val = val.substring(1, val.length - 1)
|
||
|
|
}
|
||
|
|
|
||
|
|
// handle parsing boolean arguments --foo=true --bar false.
|
||
|
|
if (checkAllAliases(key, flags.bools) || checkAllAliases(key, flags.counts)) {
|
||
|
|
if (typeof val === 'string') val = val === 'true'
|
||
|
|
}
|
||
|
|
|
||
|
|
let value = Array.isArray(val)
|
||
|
|
? val.map(function (v) { return maybeCoerceNumber(key, v) })
|
||
|
|
: maybeCoerceNumber(key, val)
|
||
|
|
|
||
|
|
// increment a count given as arg (either no value or value parsed as boolean)
|
||
|
|
if (checkAllAliases(key, flags.counts) && (isUndefined(value) || typeof value === 'boolean')) {
|
||
|
|
value = increment
|
||
|
|
}
|
||
|
|
|
||
|
|
// Set normalized value when key is in 'normalize' and in 'arrays'
|
||
|
|
if (checkAllAliases(key, flags.normalize) && checkAllAliases(key, flags.arrays)) {
|
||
|
|
if (Array.isArray(val)) value = val.map(path.normalize)
|
||
|
|
else value = path.normalize(val)
|
||
|
|
}
|
||
|
|
return value
|
||
|
|
}
|
||
|
|
|
||
|
|
function maybeCoerceNumber (key, value) {
|
||
|
|
if (!checkAllAliases(key, flags.strings) && !checkAllAliases(key, flags.bools) && !Array.isArray(value)) {
|
||
|
|
const shouldCoerceNumber = isNumber(value) && configuration['parse-numbers'] && (
|
||
|
|
Number.isSafeInteger(Math.floor(value))
|
||
|
|
)
|
||
|
|
if (shouldCoerceNumber || (!isUndefined(value) && checkAllAliases(key, flags.numbers))) value = Number(value)
|
||
|
|
}
|
||
|
|
return value
|
||
|
|
}
|
||
|
|
|
||
|
|
// set args from config.json file, this should be
|
||
|
|
// applied last so that defaults can be applied.
|
||
|
|
function setConfig (argv) {
|
||
|
|
const configLookup = Object.create(null)
|
||
|
|
|
||
|
|
// expand defaults/aliases, in-case any happen to reference
|
||
|
|
// the config.json file.
|
||
|
|
applyDefaultsAndAliases(configLookup, flags.aliases, defaults)
|
||
|
|
|
||
|
|
Object.keys(flags.configs).forEach(function (configKey) {
|
||
|
|
const configPath = argv[configKey] || configLookup[configKey]
|
||
|
|
if (configPath) {
|
||
|
|
try {
|
||
|
|
let config = null
|
||
|
|
const resolvedConfigPath = path.resolve(process.cwd(), configPath)
|
||
|
|
|
||
|
|
if (typeof flags.configs[configKey] === 'function') {
|
||
|
|
try {
|
||
|
|
config = flags.configs[configKey](resolvedConfigPath)
|
||
|
|
} catch (e) {
|
||
|
|
config = e
|
||
|
|
}
|
||
|
|
if (config instanceof Error) {
|
||
|
|
error = config
|
||
|
|
return
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
config = require(resolvedConfigPath)
|
||
|
|
}
|
||
|
|
|
||
|
|
setConfigObject(config)
|
||
|
|
} catch (ex) {
|
||
|
|
if (argv[configKey]) error = Error(__('Invalid JSON config file: %s', configPath))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
// set args from config object.
|
||
|
|
// it recursively checks nested objects.
|
||
|
|
function setConfigObject (config, prev) {
|
||
|
|
Object.keys(config).forEach(function (key) {
|
||
|
|
const value = config[key]
|
||
|
|
const fullKey = prev ? prev + '.' + key : key
|
||
|
|
|
||
|
|
// if the value is an inner object and we have dot-notation
|
||
|
|
// enabled, treat inner objects in config the same as
|
||
|
|
// heavily nested dot notations (foo.bar.apple).
|
||
|
|
if (typeof value === 'object' && value !== null && !Array.isArray(value) && configuration['dot-notation']) {
|
||
|
|
// if the value is an object but not an array, check nested object
|
||
|
|
setConfigObject(value, fullKey)
|
||
|
|
} else {
|
||
|
|
// setting arguments via CLI takes precedence over
|
||
|
|
// values within the config file.
|
||
|
|
if (!hasKey(argv, fullKey.split('.')) || (checkAllAliases(fullKey, flags.arrays) && configuration['combine-arrays'])) {
|
||
|
|
setArg(fullKey, value)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
// set all config objects passed in opts
|
||
|
|
function setConfigObjects () {
|
||
|
|
if (typeof configObjects === 'undefined') return
|
||
|
|
configObjects.forEach(function (configObject) {
|
||
|
|
setConfigObject(configObject)
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
function applyEnvVars (argv, configOnly) {
|
||
|
|
if (typeof envPrefix === 'undefined') return
|
||
|
|
|
||
|
|
const prefix = typeof envPrefix === 'string' ? envPrefix : ''
|
||
|
|
Object.keys(process.env).forEach(function (envVar) {
|
||
|
|
if (prefix === '' || envVar.lastIndexOf(prefix, 0) === 0) {
|
||
|
|
// get array of nested keys and convert them to camel case
|
||
|
|
const keys = envVar.split('__').map(function (key, i) {
|
||
|
|
if (i === 0) {
|
||
|
|
key = key.substring(prefix.length)
|
||
|
|
}
|
||
|
|
return camelCase(key)
|
||
|
|
})
|
||
|
|
|
||
|
|
if (((configOnly && flags.configs[keys.join('.')]) || !configOnly) && !hasKey(argv, keys)) {
|
||
|
|
setArg(keys.join('.'), process.env[envVar])
|
||
|
|
}
|
||
|
|
}
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
function applyCoercions (argv) {
|
||
|
|
let coerce
|
||
|
|
const applied = new Set()
|
||
|
|
Object.keys(argv).forEach(function (key) {
|
||
|
|
if (!applied.has(key)) { // If we haven't already coerced this option via one of its aliases
|
||
|
|
coerce = checkAllAliases(key, flags.coercions)
|
||
|
|
if (typeof coerce === 'function') {
|
||
|
|
try {
|
||
|
|
const value = maybeCoerceNumber(key, coerce(argv[key]))
|
||
|
|
;([].concat(flags.aliases[key] || [], key)).forEach(ali => {
|
||
|
|
applied.add(ali)
|
||
|
|
argv[ali] = value
|
||
|
|
})
|
||
|
|
} catch (err) {
|
||
|
|
error = err
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
function setPlaceholderKeys (argv) {
|
||
|
|
flags.keys.forEach((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
|
||
|
|
}
|
||
|
|
|
||
|
|
function applyDefaultsAndAliases (obj, aliases, defaults, canLog = false) {
|
||
|
|
Object.keys(defaults).forEach(function (key) {
|
||
|
|
if (!hasKey(obj, key.split('.'))) {
|
||
|
|
setKey(obj, key.split('.'), defaults[key])
|
||
|
|
if (canLog) defaulted[key] = true
|
||
|
|
|
||
|
|
;(aliases[key] || []).forEach(function (x) {
|
||
|
|
if (hasKey(obj, x.split('.'))) return
|
||
|
|
setKey(obj, x.split('.'), defaults[key])
|
||
|
|
})
|
||
|
|
}
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
function hasKey (obj, keys) {
|
||
|
|
let o = obj
|
||
|
|
|
||
|
|
if (!configuration['dot-notation']) keys = [keys.join('.')]
|
||
|
|
|
||
|
|
keys.slice(0, -1).forEach(function (key) {
|
||
|
|
o = (o[key] || {})
|
||
|
|
})
|
||
|
|
|
||
|
|
const key = keys[keys.length - 1]
|
||
|
|
|
||
|
|
if (typeof o !== 'object') return false
|
||
|
|
else return key in o
|
||
|
|
}
|
||
|
|
|
||
|
|
function setKey (obj, keys, value) {
|
||
|
|
let o = obj
|
||
|
|
|
||
|
|
if (!configuration['dot-notation']) keys = [keys.join('.')]
|
||
|
|
|
||
|
|
keys.slice(0, -1).forEach(function (key, index) {
|
||
|
|
// TODO(bcoe): in the next major version of yargs, switch to
|
||
|
|
// Object.create(null) for dot notation:
|
||
|
|
key = sanitizeKey(key)
|
||
|
|
|
||
|
|
if (typeof o === 'object' && o[key] === undefined) {
|
||
|
|
o[key] = {}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (typeof o[key] !== 'object' || Array.isArray(o[key])) {
|
||
|
|
// ensure that o[key] is an array, and that the last item is an empty object.
|
||
|
|
if (Array.isArray(o[key])) {
|
||
|
|
o[key].push({})
|
||
|
|
} else {
|
||
|
|
o[key] = [o[key], {}]
|
||
|
|
}
|
||
|
|
|
||
|
|
// we want to update the empty object at the end of the o[key] array, so set o to that object
|
||
|
|
o = o[key][o[key].length - 1]
|
||
|
|
} else {
|
||
|
|
o = o[key]
|
||
|
|
}
|
||
|
|
})
|
||
|
|
|
||
|
|
// TODO(bcoe): in the next major version of yargs, switch to
|
||
|
|
// Object.create(null) for dot notation:
|
||
|
|
const key = sanitizeKey(keys[keys.length - 1])
|
||
|
|
|
||
|
|
const isTypeArray = checkAllAliases(keys.join('.'), flags.arrays)
|
||
|
|
const isValueArray = Array.isArray(value)
|
||
|
|
let duplicate = configuration['duplicate-arguments-array']
|
||
|
|
|
||
|
|
// nargs has higher priority than duplicate
|
||
|
|
if (!duplicate && checkAllAliases(key, flags.nargs)) {
|
||
|
|
duplicate = true
|
||
|
|
if ((!isUndefined(o[key]) && flags.nargs[key] === 1) || (Array.isArray(o[key]) && o[key].length === flags.nargs[key])) {
|
||
|
|
o[key] = undefined
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (value === increment) {
|
||
|
|
o[key] = increment(o[key])
|
||
|
|
} else if (Array.isArray(o[key])) {
|
||
|
|
if (duplicate && isTypeArray && isValueArray) {
|
||
|
|
o[key] = configuration['flatten-duplicate-arrays'] ? o[key].concat(value) : (Array.isArray(o[key][0]) ? o[key] : [o[key]]).concat([value])
|
||
|
|
} else if (!duplicate && Boolean(isTypeArray) === Boolean(isValueArray)) {
|
||
|
|
o[key] = value
|
||
|
|
} else {
|
||
|
|
o[key] = o[key].concat([value])
|
||
|
|
}
|
||
|
|
} else if (o[key] === undefined && isTypeArray) {
|
||
|
|
o[key] = isValueArray ? value : [value]
|
||
|
|
} else if (duplicate && !(
|
||
|
|
o[key] === undefined ||
|
||
|
|
checkAllAliases(key, flags.counts) ||
|
||
|
|
checkAllAliases(key, flags.bools)
|
||
|
|
)) {
|
||
|
|
o[key] = [o[key], value]
|
||
|
|
} else {
|
||
|
|
o[key] = value
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// extend the aliases list with inferred aliases.
|
||
|
|
function extendAliases (...args) {
|
||
|
|
args.forEach(function (obj) {
|
||
|
|
Object.keys(obj || {}).forEach(function (key) {
|
||
|
|
// short-circuit if we've already added a key
|
||
|
|
// to the aliases array, for example it might
|
||
|
|
// exist in both 'opts.default' and 'opts.key'.
|
||
|
|
if (flags.aliases[key]) return
|
||
|
|
|
||
|
|
flags.aliases[key] = [].concat(aliases[key] || [])
|
||
|
|
// For "--option-name", also set argv.optionName
|
||
|
|
flags.aliases[key].concat(key).forEach(function (x) {
|
||
|
|
if (/-/.test(x) && configuration['camel-case-expansion']) {
|
||
|
|
const c = camelCase(x)
|
||
|
|
if (c !== key && flags.aliases[key].indexOf(c) === -1) {
|
||
|
|
flags.aliases[key].push(c)
|
||
|
|
newAliases[c] = true
|
||
|
|
}
|
||
|
|
}
|
||
|
|
})
|
||
|
|
// For "--optionName", also set argv['option-name']
|
||
|
|
flags.aliases[key].concat(key).forEach(function (x) {
|
||
|
|
if (x.length > 1 && /[A-Z]/.test(x) && configuration['camel-case-expansion']) {
|
||
|
|
const c = decamelize(x, '-')
|
||
|
|
if (c !== key && flags.aliases[key].indexOf(c) === -1) {
|
||
|
|
flags.aliases[key].push(c)
|
||
|
|
newAliases[c] = true
|
||
|
|
}
|
||
|
|
}
|
||
|
|
})
|
||
|
|
flags.aliases[key].forEach(function (x) {
|
||
|
|
flags.aliases[x] = [key].concat(flags.aliases[key].filter(function (y) {
|
||
|
|
return x !== y
|
||
|
|
}))
|
||
|
|
})
|
||
|
|
})
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
// return the 1st set flag for any of a key's aliases (or false if no flag set)
|
||
|
|
function checkAllAliases (key, flag) {
|
||
|
|
const toCheck = [].concat(flags.aliases[key] || [], key)
|
||
|
|
const keys = Object.keys(flag)
|
||
|
|
const setAlias = toCheck.find(key => keys.includes(key))
|
||
|
|
return setAlias ? flag[setAlias] : false
|
||
|
|
}
|
||
|
|
|
||
|
|
function hasAnyFlag (key) {
|
||
|
|
const toCheck = [].concat(Object.keys(flags).map(k => flags[k]))
|
||
|
|
return toCheck.some(function (flag) {
|
||
|
|
return Array.isArray(flag) ? flag.includes(key) : flag[key]
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
function hasFlagsMatching (arg, ...patterns) {
|
||
|
|
const toCheck = [].concat(...patterns)
|
||
|
|
return toCheck.some(function (pattern) {
|
||
|
|
const match = arg.match(pattern)
|
||
|
|
return match && hasAnyFlag(match[1])
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
// based on a simplified version of the short flag group parsing logic
|
||
|
|
function hasAllShortFlags (arg) {
|
||
|
|
// if this is a negative number, or doesn't start with a single hyphen, it's not a short flag group
|
||
|
|
if (arg.match(negative) || !arg.match(/^-[^-]+/)) { return false }
|
||
|
|
let hasAllFlags = true
|
||
|
|
let next
|
||
|
|
const letters = arg.slice(1).split('')
|
||
|
|
for (let j = 0; j < letters.length; j++) {
|
||
|
|
next = arg.slice(j + 2)
|
||
|
|
|
||
|
|
if (!hasAnyFlag(letters[j])) {
|
||
|
|
hasAllFlags = false
|
||
|
|
break
|
||
|
|
}
|
||
|
|
|
||
|
|
if ((letters[j + 1] && letters[j + 1] === '=') ||
|
||
|
|
next === '-' ||
|
||
|
|
(/[A-Za-z]/.test(letters[j]) && /^-?\d+(\.\d*)?(e-?\d+)?$/.test(next)) ||
|
||
|
|
(letters[j + 1] && letters[j + 1].match(/\W/))) {
|
||
|
|
break
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return hasAllFlags
|
||
|
|
}
|
||
|
|
|
||
|
|
function isUnknownOptionAsArg (arg) {
|
||
|
|
return configuration['unknown-options-as-args'] && isUnknownOption(arg)
|
||
|
|
}
|
||
|
|
|
||
|
|
function isUnknownOption (arg) {
|
||
|
|
// ignore negative numbers
|
||
|
|
if (arg.match(negative)) { return false }
|
||
|
|
// if this is a short option group and all of them are configured, it isn't unknown
|
||
|
|
if (hasAllShortFlags(arg)) { return false }
|
||
|
|
// e.g. '--count=2'
|
||
|
|
const flagWithEquals = /^-+([^=]+?)=[\s\S]*$/
|
||
|
|
// e.g. '-a' or '--arg'
|
||
|
|
const normalFlag = /^-+([^=]+?)$/
|
||
|
|
// e.g. '-a-'
|
||
|
|
const flagEndingInHyphen = /^-+([^=]+?)-$/
|
||
|
|
// e.g. '-abc123'
|
||
|
|
const flagEndingInDigits = /^-+([^=]+?\d+)$/
|
||
|
|
// e.g. '-a/usr/local'
|
||
|
|
const flagEndingInNonWordCharacters = /^-+([^=]+?)\W+.*$/
|
||
|
|
// check the different types of flag styles, including negatedBoolean, a pattern defined near the start of the parse method
|
||
|
|
return !hasFlagsMatching(arg, flagWithEquals, negatedBoolean, normalFlag, flagEndingInHyphen, flagEndingInDigits, flagEndingInNonWordCharacters)
|
||
|
|
}
|
||
|
|
|
||
|
|
// make a best effor to pick a default value
|
||
|
|
// for an option based on name and type.
|
||
|
|
function defaultValue (key) {
|
||
|
|
if (!checkAllAliases(key, flags.bools) &&
|
||
|
|
!checkAllAliases(key, flags.counts) &&
|
||
|
|
`${key}` in defaults) {
|
||
|
|
return defaults[key]
|
||
|
|
} else {
|
||
|
|
return defaultForType(guessType(key))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// return a default value, given the type of a flag.,
|
||
|
|
// e.g., key of type 'string' will default to '', rather than 'true'.
|
||
|
|
function defaultForType (type) {
|
||
|
|
const def = {
|
||
|
|
boolean: true,
|
||
|
|
string: '',
|
||
|
|
number: undefined,
|
||
|
|
array: []
|
||
|
|
}
|
||
|
|
|
||
|
|
return def[type]
|
||
|
|
}
|
||
|
|
|
||
|
|
// given a flag, enforce a default type.
|
||
|
|
function guessType (key) {
|
||
|
|
let type = 'boolean'
|
||
|
|
if (checkAllAliases(key, flags.strings)) type = 'string'
|
||
|
|
else if (checkAllAliases(key, flags.numbers)) type = 'number'
|
||
|
|
else if (checkAllAliases(key, flags.bools)) type = 'boolean'
|
||
|
|
else if (checkAllAliases(key, flags.arrays)) type = 'array'
|
||
|
|
return type
|
||
|
|
}
|
||
|
|
|
||
|
|
function isNumber (x) {
|
||
|
|
if (x === null || x === undefined) return false
|
||
|
|
// if loaded from config, may already be a number.
|
||
|
|
if (typeof x === 'number') return true
|
||
|
|
// hexadecimal.
|
||
|
|
if (/^0x[0-9a-f]+$/i.test(x)) return true
|
||
|
|
// don't treat 0123 as a number; as it drops the leading '0'.
|
||
|
|
if (x.length > 1 && x[0] === '0') return false
|
||
|
|
return /^[-]?(?:\d+(?:\.\d*)?|\.\d+)(e[-+]?\d+)?$/.test(x)
|
||
|
|
}
|
||
|
|
|
||
|
|
function isUndefined (num) {
|
||
|
|
return num === undefined
|
||
|
|
}
|
||
|
|
|
||
|
|
// check user configuration settings for inconsistencies
|
||
|
|
function checkConfiguration () {
|
||
|
|
// count keys should not be set as array/narg
|
||
|
|
Object.keys(flags.counts).find(key => {
|
||
|
|
if (checkAllAliases(key, flags.arrays)) {
|
||
|
|
error = Error(__('Invalid configuration: %s, opts.count excludes opts.array.', key))
|
||
|
|
return true
|
||
|
|
} else if (checkAllAliases(key, flags.nargs)) {
|
||
|
|
error = Error(__('Invalid configuration: %s, opts.count excludes opts.narg.', key))
|
||
|
|
return true
|
||
|
|
}
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
return {
|
||
|
|
argv: Object.assign(argvReturn, argv),
|
||
|
|
error: error,
|
||
|
|
aliases: Object.assign({}, flags.aliases),
|
||
|
|
newAliases: Object.assign({}, newAliases),
|
||
|
|
defaulted: Object.assign({}, defaulted),
|
||
|
|
configuration: configuration
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// if any aliases reference each other, we should
|
||
|
|
// merge them together.
|
||
|
|
function combineAliases (aliases) {
|
||
|
|
const aliasArrays = []
|
||
|
|
const combined = Object.create(null)
|
||
|
|
let change = true
|
||
|
|
|
||
|
|
// turn alias lookup hash {key: ['alias1', 'alias2']} into
|
||
|
|
// a simple array ['key', 'alias1', 'alias2']
|
||
|
|
Object.keys(aliases).forEach(function (key) {
|
||
|
|
aliasArrays.push(
|
||
|
|
[].concat(aliases[key], key)
|
||
|
|
)
|
||
|
|
})
|
||
|
|
|
||
|
|
// combine arrays until zero changes are
|
||
|
|
// made in an iteration.
|
||
|
|
while (change) {
|
||
|
|
change = false
|
||
|
|
for (let i = 0; i < aliasArrays.length; i++) {
|
||
|
|
for (let ii = i + 1; ii < aliasArrays.length; ii++) {
|
||
|
|
const intersect = aliasArrays[i].filter(function (v) {
|
||
|
|
return aliasArrays[ii].indexOf(v) !== -1
|
||
|
|
})
|
||
|
|
|
||
|
|
if (intersect.length) {
|
||
|
|
aliasArrays[i] = aliasArrays[i].concat(aliasArrays[ii])
|
||
|
|
aliasArrays.splice(ii, 1)
|
||
|
|
change = true
|
||
|
|
break
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// map arrays back to the hash-lookup (de-dupe while
|
||
|
|
// we're at it).
|
||
|
|
aliasArrays.forEach(function (aliasArray) {
|
||
|
|
aliasArray = aliasArray.filter(function (v, i, self) {
|
||
|
|
return self.indexOf(v) === i
|
||
|
|
})
|
||
|
|
combined[aliasArray.pop()] = aliasArray
|
||
|
|
})
|
||
|
|
|
||
|
|
return combined
|
||
|
|
}
|
||
|
|
|
||
|
|
// this function should only be called when a count is given as an arg
|
||
|
|
// it is NOT called to set a default value
|
||
|
|
// thus we can start the count at 1 instead of 0
|
||
|
|
function increment (orig) {
|
||
|
|
return orig !== undefined ? orig + 1 : 1
|
||
|
|
}
|
||
|
|
|
||
|
|
function Parser (args, opts) {
|
||
|
|
const result = parse(args.slice(), opts)
|
||
|
|
return result.argv
|
||
|
|
}
|
||
|
|
|
||
|
|
// parse arguments and return detailed
|
||
|
|
// meta information, aliases, etc.
|
||
|
|
Parser.detailed = function (args, opts) {
|
||
|
|
return parse(args.slice(), opts)
|
||
|
|
}
|
||
|
|
|
||
|
|
// TODO(bcoe): in the next major version of yargs, switch to
|
||
|
|
// Object.create(null) for dot notation:
|
||
|
|
function sanitizeKey (key) {
|
||
|
|
if (key === '__proto__') return '___proto___'
|
||
|
|
return key
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = Parser
|