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122 lines
3.0 KiB
JavaScript
122 lines
3.0 KiB
JavaScript
// Load modules
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var Utils = require('./utils');
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// Declare internals
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var internals = {
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delimiter: '&',
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arrayPrefixGenerators: {
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brackets: function (prefix, key) {
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return prefix + '[]';
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},
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indices: function (prefix, key) {
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return prefix + '[' + key + ']';
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},
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repeat: function (prefix, key) {
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return prefix;
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}
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},
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strictNullHandling: false
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};
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internals.stringify = function (obj, prefix, generateArrayPrefix, strictNullHandling, filter) {
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if (typeof filter === 'function') {
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obj = filter(prefix, obj);
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}
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else if (Utils.isBuffer(obj)) {
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obj = obj.toString();
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}
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else if (obj instanceof Date) {
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obj = obj.toISOString();
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}
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else if (obj === null) {
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if (strictNullHandling) {
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return Utils.encode(prefix);
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}
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obj = '';
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}
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if (typeof obj === 'string' ||
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typeof obj === 'number' ||
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typeof obj === 'boolean') {
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return [Utils.encode(prefix) + '=' + Utils.encode(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 = Array.isArray(filter) ? filter : Object.keys(obj);
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for (var i = 0, il = objKeys.length; i < il; ++i) {
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var key = objKeys[i];
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if (Array.isArray(obj)) {
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values = values.concat(internals.stringify(obj[key], generateArrayPrefix(prefix, key), generateArrayPrefix, strictNullHandling, filter));
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}
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else {
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values = values.concat(internals.stringify(obj[key], prefix + '[' + key + ']', generateArrayPrefix, strictNullHandling, filter));
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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 (obj, options) {
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options = options || {};
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var delimiter = typeof options.delimiter === 'undefined' ? internals.delimiter : options.delimiter;
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var strictNullHandling = typeof options.strictNullHandling === 'boolean' ? options.strictNullHandling : internals.strictNullHandling;
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var objKeys;
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var filter;
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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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}
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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' ||
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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 internals.arrayPrefixGenerators) {
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arrayFormat = options.arrayFormat;
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}
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else if ('indices' in options) {
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arrayFormat = options.indices ? 'indices' : 'repeat';
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}
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else {
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arrayFormat = 'indices';
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}
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var generateArrayPrefix = internals.arrayPrefixGenerators[arrayFormat];
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if (!objKeys) {
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objKeys = Object.keys(obj);
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}
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for (var i = 0, il = objKeys.length; i < il; ++i) {
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var key = objKeys[i];
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keys = keys.concat(internals.stringify(obj[key], key, generateArrayPrefix, strictNullHandling, filter));
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}
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return keys.join(delimiter);
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};
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