103 lines
3.2 KiB
JavaScript
103 lines
3.2 KiB
JavaScript
/**
|
|
* Created by alexey2baranov on 28.01.17.
|
|
*/
|
|
/*
|
|
An extraction of the deparam method from Ben Alman's jQuery BBQ
|
|
http://benalman.com/projects/jquery-bbq-plugin/
|
|
*/
|
|
|
|
const coerce_types = {'true': !0, 'false': !1, 'null': null};
|
|
|
|
function deparam (params, coerce) {
|
|
// console.log(params)
|
|
const obj = {};
|
|
|
|
// Iterate over all name=value pairs.
|
|
params.replace(/\+/g, ' ').split('&').forEach(function (v) {
|
|
const param = v.split('=');
|
|
|
|
let
|
|
key = decodeURIComponent(param[0]),
|
|
// If key is more complex than 'foo', like 'a[]' or 'a[b][c]', split it
|
|
// into its component parts.
|
|
keys = key.split(']['),
|
|
keys_last = keys.length - 1;
|
|
|
|
// If the first keys part contains [ and the last ends with ], then []
|
|
// are correctly balanced.
|
|
if (/\[/.test(keys[0]) && /\]$/.test(keys[keys_last])) {
|
|
// Remove the trailing ] from the last keys part.
|
|
keys[keys_last] = keys[keys_last].replace(/\]$/, '');
|
|
|
|
// Split first keys part into two parts on the [ and add them back onto
|
|
// the beginning of the keys array.
|
|
keys = keys.shift().split('[').concat(keys);
|
|
|
|
keys_last = keys.length - 1;
|
|
} else {
|
|
// Basic 'foo' style key.
|
|
keys_last = 0;
|
|
}
|
|
|
|
// Are we dealing with a name=value pair, or just a name?
|
|
if (param.length >= 2) {
|
|
let val = decodeURIComponent(param.slice(1).join('='));
|
|
|
|
// Coerce values.
|
|
if (coerce) {
|
|
val = val && !isNaN(val) ? +val // number
|
|
: val === 'undefined' ? undefined // undefined
|
|
: coerce_types[val] !== undefined ? coerce_types[val] // true, false, null
|
|
: val; // string
|
|
}
|
|
|
|
if (keys_last) {
|
|
let cur = obj;
|
|
// Complex key, build deep object structure based on a few rules:
|
|
// * The 'cur' pointer starts at the object top-level.
|
|
// * [] = array push (n is set to array length), [n] = array if n is
|
|
// numeric, otherwise object.
|
|
// * If at the last keys part, set the value.
|
|
// * For each keys part, if the current level is undefined create an
|
|
// object or array based on the type of the next keys part.
|
|
// * Move the 'cur' pointer to the next level.
|
|
// * Rinse & repeat.
|
|
for (let i = 0; i <= keys_last; i++) {
|
|
key = keys[i] === '' ? cur.length : keys[i];
|
|
cur = cur[key] = i < keys_last
|
|
? cur[key] || (keys[i + 1] && isNaN(keys[i + 1]) ? {} : [])
|
|
: val;
|
|
}
|
|
|
|
} else {
|
|
// Simple key, even simpler rules, since only scalars and shallow
|
|
// arrays are allowed.
|
|
|
|
if (Array.isArray(obj[key])) {
|
|
// val is already an array, so push on the next value.
|
|
obj[key].push(val);
|
|
|
|
} else if (obj[key] !== undefined) {
|
|
// val isn't an array, but since a second value has been specified,
|
|
// convert val into an array.
|
|
obj[key] = [obj[key], val];
|
|
|
|
} else {
|
|
// val is a scalar.
|
|
obj[key] = val;
|
|
}
|
|
}
|
|
|
|
} else if (key) {
|
|
// No value was defined, so set something meaningful.
|
|
obj[key] = coerce
|
|
? undefined
|
|
: '';
|
|
}
|
|
});
|
|
|
|
return obj;
|
|
}
|
|
|
|
export default deparam;
|