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]);
|
}
|
|
module.exports = 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);
|
}
|
}
|
}
|
|
opts.boolean.forEach(key => {
|
opts.boolean = opts.boolean.concat(opts.alias[key] = opts.alias[key] || []);
|
});
|
|
opts.string.forEach(key => {
|
opts.string = opts.string.concat(opts.alias[key] = opts.alias[key] || []);
|
});
|
|
if (defaults) {
|
for (k in opts.default) {
|
opts.alias[k] = opts.alias[k] || [];
|
(opts[typeof opts.default[k]] || []).push(k);
|
}
|
}
|
|
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;
|
}
|
