AlkantarClanX12
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// info about each config option.
var debug = process.env.DEBUG_NOPT || process.env.NOPT_DEBUG
? function () { console.error.apply(console, arguments) }
: function () {}
var url = require("url")
, path = require("path")
, Stream = require("stream").Stream
, abbrev = require("abbrev")
, osenv = require("osenv")
module.exports = exports = nopt
exports.clean = clean
exports.typeDefs =
{ String : { type: String, validate: validateString }
, Boolean : { type: Boolean, validate: validateBoolean }
, url : { type: url, validate: validateUrl }
, Number : { type: Number, validate: validateNumber }
, path : { type: path, validate: validatePath }
, Stream : { type: Stream, validate: validateStream }
, Date : { type: Date, validate: validateDate }
}
function nopt (types, shorthands, args, slice) {
args = args || process.argv
types = types || {}
shorthands = shorthands || {}
if (typeof slice !== "number") slice = 2
debug(types, shorthands, args, slice)
args = args.slice(slice)
var data = {}
, key
, argv = {
remain: [],
cooked: args,
original: args.slice(0)
}
parse(args, data, argv.remain, types, shorthands)
// now data is full
clean(data, types, exports.typeDefs)
data.argv = argv
Object.defineProperty(data.argv, 'toString', { value: function () {
return this.original.map(JSON.stringify).join(" ")
}, enumerable: false })
return data
}
function clean (data, types, typeDefs) {
typeDefs = typeDefs || exports.typeDefs
var remove = {}
, typeDefault = [false, true, null, String, Array]
Object.keys(data).forEach(function (k) {
if (k === "argv") return
var val = data[k]
, isArray = Array.isArray(val)
, type = types[k]
if (!isArray) val = [val]
if (!type) type = typeDefault
if (type === Array) type = typeDefault.concat(Array)
if (!Array.isArray(type)) type = [type]
debug("val=%j", val)
debug("types=", type)
val = val.map(function (val) {
// if it's an unknown value, then parse false/true/null/numbers/dates
if (typeof val === "string") {
debug("string %j", val)
val = val.trim()
if ((val === "null" && ~type.indexOf(null))
|| (val === "true" &&
(~type.indexOf(true) || ~type.indexOf(Boolean)))
|| (val === "false" &&
(~type.indexOf(false) || ~type.indexOf(Boolean)))) {
val = JSON.parse(val)
debug("jsonable %j", val)
} else if (~type.indexOf(Number) && !isNaN(val)) {
debug("convert to number", val)
val = +val
} else if (~type.indexOf(Date) && !isNaN(Date.parse(val))) {
debug("convert to date", val)
val = new Date(val)
}
}
if (!types.hasOwnProperty(k)) {
return val
}
// allow `--no-blah` to set 'blah' to null if null is allowed
if (val === false && ~type.indexOf(null) &&
!(~type.indexOf(false) || ~type.indexOf(Boolean))) {
val = null
}
var d = {}
d[k] = val
debug("prevalidated val", d, val, types[k])
if (!validate(d, k, val, types[k], typeDefs)) {
if (exports.invalidHandler) {
exports.invalidHandler(k, val, types[k], data)
} else if (exports.invalidHandler !== false) {
debug("invalid: "+k+"="+val, types[k])
}
return remove
}
debug("validated val", d, val, types[k])
return d[k]
}).filter(function (val) { return val !== remove })
if (!val.length) delete data[k]
else if (isArray) {
debug(isArray, data[k], val)
data[k] = val
} else data[k] = val[0]
debug("k=%s val=%j", k, val, data[k])
})
}
function validateString (data, k, val) {
data[k] = String(val)
}
function validatePath (data, k, val) {
if (val === true) return false
if (val === null) return true
val = String(val)
var isWin = process.platform === 'win32'
, homePattern = isWin ? /^~(\/|\\)/ : /^~\//
, home = osenv.home()
if (home && val.match(homePattern)) {
data[k] = path.resolve(home, val.substr(2))
} else {
data[k] = path.resolve(val)
}
return true
}
function validateNumber (data, k, val) {
debug("validate Number %j %j %j", k, val, isNaN(val))
if (isNaN(val)) return false
data[k] = +val
}
function validateDate (data, k, val) {
var s = Date.parse(val)
debug("validate Date %j %j %j", k, val, s)
if (isNaN(s)) return false
data[k] = new Date(val)
}
function validateBoolean (data, k, val) {
if (val instanceof Boolean) val = val.valueOf()
else if (typeof val === "string") {
if (!isNaN(val)) val = !!(+val)
else if (val === "null" || val === "false") val = false
else val = true
} else val = !!val
data[k] = val
}
function validateUrl (data, k, val) {
val = url.parse(String(val))
if (!val.host) return false
data[k] = val.href
}
function validateStream (data, k, val) {
if (!(val instanceof Stream)) return false
data[k] = val
}
function validate (data, k, val, type, typeDefs) {
// arrays are lists of types.
if (Array.isArray(type)) {
for (var i = 0, l = type.length; i < l; i ++) {
if (type[i] === Array) continue
if (validate(data, k, val, type[i], typeDefs)) return true
}
delete data[k]
return false
}
// an array of anything?
if (type === Array) return true
// NaN is poisonous. Means that something is not allowed.
if (type !== type) {
debug("Poison NaN", k, val, type)
delete data[k]
return false
}
// explicit list of values
if (val === type) {
debug("Explicitly allowed %j", val)
// if (isArray) (data[k] = data[k] || []).push(val)
// else data[k] = val
data[k] = val
return true
}
// now go through the list of typeDefs, validate against each one.
var ok = false
, types = Object.keys(typeDefs)
for (var i = 0, l = types.length; i < l; i ++) {
debug("test type %j %j %j", k, val, types[i])
var t = typeDefs[types[i]]
if (t &&
((type && type.name && t.type && t.type.name) ? (type.name === t.type.name) : (type === t.type))) {
var d = {}
ok = false !== t.validate(d, k, val)
val = d[k]
if (ok) {
// if (isArray) (data[k] = data[k] || []).push(val)
// else data[k] = val
data[k] = val
break
}
}
}
debug("OK? %j (%j %j %j)", ok, k, val, types[i])
if (!ok) delete data[k]
return ok
}
function parse (args, data, remain, types, shorthands) {
debug("parse", args, data, remain)
var key = null
, abbrevs = abbrev(Object.keys(types))
, shortAbbr = abbrev(Object.keys(shorthands))
for (var i = 0; i < args.length; i ++) {
var arg = args[i]
debug("arg", arg)
if (arg.match(/^-{2,}$/)) {
// done with keys.
// the rest are args.
remain.push.apply(remain, args.slice(i + 1))
args[i] = "--"
break
}
var hadEq = false
if (arg.charAt(0) === "-" && arg.length > 1) {
var at = arg.indexOf('=')
if (at > -1) {
hadEq = true
var v = arg.substr(at + 1)
arg = arg.substr(0, at)
args.splice(i, 1, arg, v)
}
// see if it's a shorthand
// if so, splice and back up to re-parse it.
var shRes = resolveShort(arg, shorthands, shortAbbr, abbrevs)
debug("arg=%j shRes=%j", arg, shRes)
if (shRes) {
debug(arg, shRes)
args.splice.apply(args, [i, 1].concat(shRes))
if (arg !== shRes[0]) {
i --
continue
}
}
arg = arg.replace(/^-+/, "")
var no = null
while (arg.toLowerCase().indexOf("no-") === 0) {
no = !no
arg = arg.substr(3)
}
if (abbrevs[arg]) arg = abbrevs[arg]
var argType = types[arg]
var isTypeArray = Array.isArray(argType)
if (isTypeArray && argType.length === 1) {
isTypeArray = false
argType = argType[0]
}
var isArray = argType === Array ||
isTypeArray && argType.indexOf(Array) !== -1
// allow unknown things to be arrays if specified multiple times.
if (!types.hasOwnProperty(arg) && data.hasOwnProperty(arg)) {
if (!Array.isArray(data[arg]))
data[arg] = [data[arg]]
isArray = true
}
var val
, la = args[i + 1]
var isBool = typeof no === 'boolean' ||
argType === Boolean ||
isTypeArray && argType.indexOf(Boolean) !== -1 ||
(typeof argType === 'undefined' && !hadEq) ||
(la === "false" &&
(argType === null ||
isTypeArray && ~argType.indexOf(null)))
if (isBool) {
// just set and move along
val = !no
// however, also support --bool true or --bool false
if (la === "true" || la === "false") {
val = JSON.parse(la)
la = null
if (no) val = !val
i ++
}
// also support "foo":[Boolean, "bar"] and "--foo bar"
if (isTypeArray && la) {
if (~argType.indexOf(la)) {
// an explicit type
val = la
i ++
} else if ( la === "null" && ~argType.indexOf(null) ) {
// null allowed
val = null
i ++
} else if ( !la.match(/^-{2,}[^-]/) &&
!isNaN(la) &&
~argType.indexOf(Number) ) {
// number
val = +la
i ++
} else if ( !la.match(/^-[^-]/) && ~argType.indexOf(String) ) {
// string
val = la
i ++
}
}
if (isArray) (data[arg] = data[arg] || []).push(val)
else data[arg] = val
continue
}
if (argType === String) {
if (la === undefined) {
la = ""
} else if (la.match(/^-{1,2}[^-]+/)) {
la = ""
i --
}
}
if (la && la.match(/^-{2,}$/)) {
la = undefined
i --
}
val = la === undefined ? true : la
if (isArray) (data[arg] = data[arg] || []).push(val)
else data[arg] = val
i ++
continue
}
remain.push(arg)
}
}
function resolveShort (arg, shorthands, shortAbbr, abbrevs) {
// handle single-char shorthands glommed together, like
// npm ls -glp, but only if there is one dash, and only if
// all of the chars are single-char shorthands, and it's
// not a match to some other abbrev.
arg = arg.replace(/^-+/, '')
// if it's an exact known option, then don't go any further
if (abbrevs[arg] === arg)
return null
// if it's an exact known shortopt, same deal
if (shorthands[arg]) {
// make it an array, if it's a list of words
if (shorthands[arg] && !Array.isArray(shorthands[arg]))
shorthands[arg] = shorthands[arg].split(/\s+/)
return shorthands[arg]
}
// first check to see if this arg is a set of single-char shorthands
var singles = shorthands.___singles
if (!singles) {
singles = Object.keys(shorthands).filter(function (s) {
return s.length === 1
}).reduce(function (l,r) {
l[r] = true
return l
}, {})
shorthands.___singles = singles
debug('shorthand singles', singles)
}
var chrs = arg.split("").filter(function (c) {
return singles[c]
})
if (chrs.join("") === arg) return chrs.map(function (c) {
return shorthands[c]
}).reduce(function (l, r) {
return l.concat(r)
}, [])
// if it's an arg abbrev, and not a literal shorthand, then prefer the arg
if (abbrevs[arg] && !shorthands[arg])
return null
// if it's an abbr for a shorthand, then use that
if (shortAbbr[arg])
arg = shortAbbr[arg]
// make it an array, if it's a list of words
if (shorthands[arg] && !Array.isArray(shorthands[arg]))
shorthands[arg] = shorthands[arg].split(/\s+/)
return shorthands[arg]
}