55 lines
1.3 KiB
JavaScript
55 lines
1.3 KiB
JavaScript
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"use strict";
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const JSON5 = require("json5");
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const specialValues = {
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"null": null,
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"true": true,
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"false": false
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};
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function parseQuery(query) {
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if(query.substr(0, 1) !== "?") {
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throw new Error("A valid query string passed to parseQuery should begin with '?'");
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}
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query = query.substr(1);
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if(!query) {
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return {};
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}
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if(query.substr(0, 1) === "{" && query.substr(-1) === "}") {
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return JSON5.parse(query);
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}
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const queryArgs = query.split(/[,&]/g);
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const result = {};
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queryArgs.forEach(arg => {
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const idx = arg.indexOf("=");
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if(idx >= 0) {
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let name = arg.substr(0, idx);
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let value = decodeURIComponent(arg.substr(idx + 1));
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if(specialValues.hasOwnProperty(value)) {
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value = specialValues[value];
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}
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if(name.substr(-2) === "[]") {
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name = decodeURIComponent(name.substr(0, name.length - 2));
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if(!Array.isArray(result[name]))
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result[name] = [];
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result[name].push(value);
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} else {
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name = decodeURIComponent(name);
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result[name] = value;
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}
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} else {
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if(arg.substr(0, 1) === "-") {
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result[decodeURIComponent(arg.substr(1))] = false;
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} else if(arg.substr(0, 1) === "+") {
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result[decodeURIComponent(arg.substr(1))] = true;
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} else {
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result[decodeURIComponent(arg)] = true;
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}
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}
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});
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return result;
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}
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module.exports = parseQuery;
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