// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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'use strict';
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// If obj.hasOwnProperty has been overridden, then calling
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// obj.hasOwnProperty(prop) will break.
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// See: https://github.com/joyent/node/issues/1707
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function hasOwnProperty(obj, prop) {
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return Object.prototype.hasOwnProperty.call(obj, prop);
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}
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module.exports = function(qs, sep, eq, options) {
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sep = sep || '&';
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eq = eq || '=';
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var obj = {};
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if (typeof qs !== 'string' || qs.length === 0) {
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return obj;
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}
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var regexp = /\+/g;
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qs = qs.split(sep);
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var maxKeys = 1000;
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if (options && typeof options.maxKeys === 'number') {
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maxKeys = options.maxKeys;
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}
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var len = qs.length;
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// maxKeys <= 0 means that we should not limit keys count
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if (maxKeys > 0 && len > maxKeys) {
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len = maxKeys;
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}
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for (var i = 0; i < len; ++i) {
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var x = qs[i].replace(regexp, '%20'),
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idx = x.indexOf(eq),
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kstr, vstr, k, v;
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if (idx >= 0) {
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kstr = x.substr(0, idx);
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vstr = x.substr(idx + 1);
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} else {
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kstr = x;
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vstr = '';
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}
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k = decodeURIComponent(kstr);
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v = decodeURIComponent(vstr);
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if (!hasOwnProperty(obj, k)) {
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obj[k] = v;
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} else if (Array.isArray(obj[k])) {
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obj[k].push(v);
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} else {
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obj[k] = [obj[k], v];
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}
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}
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return obj;
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};
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