166 lines
4.3 KiB
JavaScript
166 lines
4.3 KiB
JavaScript
// Load modules
|
|
|
|
var Utils = require('./utils');
|
|
|
|
|
|
// Declare internals
|
|
|
|
var internals = {
|
|
delimiter: '&',
|
|
depth: 5,
|
|
arrayLimit: 20,
|
|
parameterLimit: 1000,
|
|
strictNullHandling: false
|
|
};
|
|
|
|
|
|
internals.parseValues = function (str, options) {
|
|
|
|
var obj = {};
|
|
var parts = str.split(options.delimiter, options.parameterLimit === Infinity ? undefined : options.parameterLimit);
|
|
|
|
for (var i = 0, il = parts.length; i < il; ++i) {
|
|
var part = parts[i];
|
|
var pos = part.indexOf(']=') === -1 ? part.indexOf('=') : part.indexOf(']=') + 1;
|
|
|
|
if (pos === -1) {
|
|
obj[Utils.decode(part)] = '';
|
|
|
|
if (options.strictNullHandling) {
|
|
obj[Utils.decode(part)] = null;
|
|
}
|
|
}
|
|
else {
|
|
var key = Utils.decode(part.slice(0, pos));
|
|
var val = Utils.decode(part.slice(pos + 1));
|
|
|
|
if (!Object.prototype.hasOwnProperty.call(obj, key)) {
|
|
obj[key] = val;
|
|
}
|
|
else {
|
|
obj[key] = [].concat(obj[key]).concat(val);
|
|
}
|
|
}
|
|
}
|
|
|
|
return obj;
|
|
};
|
|
|
|
|
|
internals.parseObject = function (chain, val, options) {
|
|
|
|
if (!chain.length) {
|
|
return val;
|
|
}
|
|
|
|
var root = chain.shift();
|
|
|
|
var obj;
|
|
if (root === '[]') {
|
|
obj = [];
|
|
obj = obj.concat(internals.parseObject(chain, val, options));
|
|
}
|
|
else {
|
|
obj = Object.create(null);
|
|
var cleanRoot = root[0] === '[' && root[root.length - 1] === ']' ? root.slice(1, root.length - 1) : root;
|
|
var index = parseInt(cleanRoot, 10);
|
|
var indexString = '' + index;
|
|
if (!isNaN(index) &&
|
|
root !== cleanRoot &&
|
|
indexString === cleanRoot &&
|
|
index >= 0 &&
|
|
(options.parseArrays &&
|
|
index <= options.arrayLimit)) {
|
|
|
|
obj = [];
|
|
obj[index] = internals.parseObject(chain, val, options);
|
|
}
|
|
else {
|
|
obj[cleanRoot] = internals.parseObject(chain, val, options);
|
|
}
|
|
}
|
|
|
|
return obj;
|
|
};
|
|
|
|
|
|
internals.parseKeys = function (key, val, options) {
|
|
|
|
if (!key) {
|
|
return;
|
|
}
|
|
|
|
// Transform dot notation to bracket notation
|
|
|
|
if (options.allowDots) {
|
|
key = key.replace(/\.([^\.\[]+)/g, '[$1]');
|
|
}
|
|
|
|
// The regex chunks
|
|
|
|
var parent = /^([^\[\]]*)/;
|
|
var child = /(\[[^\[\]]*\])/g;
|
|
|
|
// Get the parent
|
|
|
|
var segment = parent.exec(key);
|
|
|
|
// Stash the parent if it exists
|
|
|
|
var keys = [];
|
|
if (segment[1]) {
|
|
keys.push(segment[1]);
|
|
}
|
|
|
|
// Loop through children appending to the array until we hit depth
|
|
|
|
var i = 0;
|
|
while ((segment = child.exec(key)) !== null && i < options.depth) {
|
|
|
|
++i;
|
|
keys.push(segment[1]);
|
|
}
|
|
|
|
// If there's a remainder, just add whatever is left
|
|
|
|
if (segment) {
|
|
keys.push('[' + key.slice(segment.index) + ']');
|
|
}
|
|
|
|
return internals.parseObject(keys, val, options);
|
|
};
|
|
|
|
|
|
module.exports = function (str, options) {
|
|
|
|
if (str === '' ||
|
|
str === null ||
|
|
typeof str === 'undefined') {
|
|
|
|
return Object.create(null);
|
|
}
|
|
|
|
options = options || {};
|
|
options.delimiter = typeof options.delimiter === 'string' || Utils.isRegExp(options.delimiter) ? options.delimiter : internals.delimiter;
|
|
options.depth = typeof options.depth === 'number' ? options.depth : internals.depth;
|
|
options.arrayLimit = typeof options.arrayLimit === 'number' ? options.arrayLimit : internals.arrayLimit;
|
|
options.parseArrays = options.parseArrays !== false;
|
|
options.allowDots = options.allowDots !== false;
|
|
options.parameterLimit = typeof options.parameterLimit === 'number' ? options.parameterLimit : internals.parameterLimit;
|
|
options.strictNullHandling = typeof options.strictNullHandling === 'boolean' ? options.strictNullHandling : internals.strictNullHandling;
|
|
|
|
|
|
var tempObj = typeof str === 'string' ? internals.parseValues(str, options) : str;
|
|
var obj = Object.create(null);
|
|
|
|
// Iterate over the keys and setup the new object
|
|
|
|
var keys = Object.keys(tempObj);
|
|
for (var i = 0, il = keys.length; i < il; ++i) {
|
|
var key = keys[i];
|
|
var newObj = internals.parseKeys(key, tempObj[key], options);
|
|
obj = Utils.merge(obj, newObj);
|
|
}
|
|
|
|
return Utils.compact(obj);
|
|
};
|