138 lines
4.1 KiB
JavaScript
138 lines
4.1 KiB
JavaScript
'use strict';
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var Utils = require('./utils');
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var arrayPrefixGenerators = {
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brackets: function brackets(prefix) {
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return prefix + '[]';
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},
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indices: function indices(prefix, key) {
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return prefix + '[' + key + ']';
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},
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repeat: function repeat(prefix) {
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return prefix;
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}
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};
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var defaults = {
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delimiter: '&',
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strictNullHandling: false,
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skipNulls: false,
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encode: true,
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encoder: Utils.encode
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};
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var stringify = function stringify(object, prefix, generateArrayPrefix, strictNullHandling, skipNulls, encoder, filter, sort, allowDots) {
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var obj = object;
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if (typeof filter === 'function') {
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obj = filter(prefix, obj);
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} else if (obj instanceof Date) {
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obj = obj.toISOString();
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} else if (obj === null) {
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if (strictNullHandling) {
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return encoder ? encoder(prefix) : prefix;
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}
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obj = '';
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}
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if (typeof obj === 'string' || typeof obj === 'number' || typeof obj === 'boolean' || Utils.isBuffer(obj)) {
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if (encoder) {
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return [encoder(prefix) + '=' + encoder(obj)];
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}
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return [prefix + '=' + String(obj)];
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}
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var values = [];
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if (typeof obj === 'undefined') {
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return values;
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}
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var objKeys;
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if (Array.isArray(filter)) {
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objKeys = filter;
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} else {
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var keys = Object.keys(obj);
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objKeys = sort ? keys.sort(sort) : keys;
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}
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for (var i = 0; i < objKeys.length; ++i) {
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var key = objKeys[i];
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if (skipNulls && obj[key] === null) {
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continue;
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}
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if (Array.isArray(obj)) {
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values = values.concat(stringify(obj[key], generateArrayPrefix(prefix, key), generateArrayPrefix, strictNullHandling, skipNulls, encoder, filter, sort, allowDots));
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} else {
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values = values.concat(stringify(obj[key], prefix + (allowDots ? '.' + key : '[' + key + ']'), generateArrayPrefix, strictNullHandling, skipNulls, encoder, filter, sort, allowDots));
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}
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}
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return values;
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};
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module.exports = function (object, opts) {
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var obj = object;
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var options = opts || {};
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var delimiter = typeof options.delimiter === 'undefined' ? defaults.delimiter : options.delimiter;
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var strictNullHandling = typeof options.strictNullHandling === 'boolean' ? options.strictNullHandling : defaults.strictNullHandling;
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var skipNulls = typeof options.skipNulls === 'boolean' ? options.skipNulls : defaults.skipNulls;
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var encode = typeof options.encode === 'boolean' ? options.encode : defaults.encode;
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var encoder = encode ? (typeof options.encoder === 'function' ? options.encoder : defaults.encoder) : null;
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var sort = typeof options.sort === 'function' ? options.sort : null;
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var allowDots = typeof options.allowDots === 'undefined' ? false : options.allowDots;
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var objKeys;
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var filter;
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if (options.encoder !== null && options.encoder !== undefined && typeof options.encoder !== 'function') {
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throw new TypeError('Encoder has to be a function.');
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}
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if (typeof options.filter === 'function') {
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filter = options.filter;
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obj = filter('', obj);
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} else if (Array.isArray(options.filter)) {
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objKeys = filter = options.filter;
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}
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var keys = [];
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if (typeof obj !== 'object' || obj === null) {
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return '';
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}
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var arrayFormat;
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if (options.arrayFormat in arrayPrefixGenerators) {
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arrayFormat = options.arrayFormat;
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} else if ('indices' in options) {
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arrayFormat = options.indices ? 'indices' : 'repeat';
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} else {
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arrayFormat = 'indices';
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}
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var generateArrayPrefix = arrayPrefixGenerators[arrayFormat];
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if (!objKeys) {
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objKeys = Object.keys(obj);
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}
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if (sort) {
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objKeys.sort(sort);
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}
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for (var i = 0; i < objKeys.length; ++i) {
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var key = objKeys[i];
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if (skipNulls && obj[key] === null) {
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continue;
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}
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keys = keys.concat(stringify(obj[key], key, generateArrayPrefix, strictNullHandling, skipNulls, encoder, filter, sort, allowDots));
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}
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return keys.join(delimiter);
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};
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