Spaces:
Runtime error
Runtime error
function toArr(any) { | |
return any == null ? [] : Array.isArray(any) ? any : [any]; | |
} | |
function toVal(out, key, val, opts) { | |
var x, old=out[key], nxt=( | |
!!~opts.string.indexOf(key) ? (val == null || val === true ? '' : String(val)) | |
: typeof val === 'boolean' ? val | |
: !!~opts.boolean.indexOf(key) ? (val === 'false' ? false : val === 'true' || (out._.push((x = +val,x * 0 === 0) ? x : val),!!val)) | |
: (x = +val,x * 0 === 0) ? x : val | |
); | |
out[key] = old == null ? nxt : (Array.isArray(old) ? old.concat(nxt) : [old, nxt]); | |
} | |
export default function (args, opts) { | |
args = args || []; | |
opts = opts || {}; | |
var k, arr, arg, name, val, out={ _:[] }; | |
var i=0, j=0, idx=0, len=args.length; | |
const alibi = opts.alias !== void 0; | |
const strict = opts.unknown !== void 0; | |
const defaults = opts.default !== void 0; | |
opts.alias = opts.alias || {}; | |
opts.string = toArr(opts.string); | |
opts.boolean = toArr(opts.boolean); | |
if (alibi) { | |
for (k in opts.alias) { | |
arr = opts.alias[k] = toArr(opts.alias[k]); | |
for (i=0; i < arr.length; i++) { | |
(opts.alias[arr[i]] = arr.concat(k)).splice(i, 1); | |
} | |
} | |
} | |
for (i=opts.boolean.length; i-- > 0;) { | |
arr = opts.alias[opts.boolean[i]] || []; | |
for (j=arr.length; j-- > 0;) opts.boolean.push(arr[j]); | |
} | |
for (i=opts.string.length; i-- > 0;) { | |
arr = opts.alias[opts.string[i]] || []; | |
for (j=arr.length; j-- > 0;) opts.string.push(arr[j]); | |
} | |
if (defaults) { | |
for (k in opts.default) { | |
name = typeof opts.default[k]; | |
arr = opts.alias[k] = opts.alias[k] || []; | |
if (opts[name] !== void 0) { | |
opts[name].push(k); | |
for (i=0; i < arr.length; i++) { | |
opts[name].push(arr[i]); | |
} | |
} | |
} | |
} | |
const keys = strict ? Object.keys(opts.alias) : []; | |
for (i=0; i < len; i++) { | |
arg = args[i]; | |
if (arg === '--') { | |
out._ = out._.concat(args.slice(++i)); | |
break; | |
} | |
for (j=0; j < arg.length; j++) { | |
if (arg.charCodeAt(j) !== 45) break; // "-" | |
} | |
if (j === 0) { | |
out._.push(arg); | |
} else if (arg.substring(j, j + 3) === 'no-') { | |
name = arg.substring(j + 3); | |
if (strict && !~keys.indexOf(name)) { | |
return opts.unknown(arg); | |
} | |
out[name] = false; | |
} else { | |
for (idx=j+1; idx < arg.length; idx++) { | |
if (arg.charCodeAt(idx) === 61) break; // "=" | |
} | |
name = arg.substring(j, idx); | |
val = arg.substring(++idx) || (i+1 === len || (''+args[i+1]).charCodeAt(0) === 45 || args[++i]); | |
arr = (j === 2 ? [name] : name); | |
for (idx=0; idx < arr.length; idx++) { | |
name = arr[idx]; | |
if (strict && !~keys.indexOf(name)) return opts.unknown('-'.repeat(j) + name); | |
toVal(out, name, (idx + 1 < arr.length) || val, opts); | |
} | |
} | |
} | |
if (defaults) { | |
for (k in opts.default) { | |
if (out[k] === void 0) { | |
out[k] = opts.default[k]; | |
} | |
} | |
} | |
if (alibi) { | |
for (k in out) { | |
arr = opts.alias[k] || []; | |
while (arr.length > 0) { | |
out[arr.shift()] = out[k]; | |
} | |
} | |
} | |
return out; | |
} | |