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/*! * Port of body-parser (https://github.com/expressjs/body-parser) for Deno. * * Licensed as follows: * * (The MIT License) *  * Copyright (c) 2014 Jonathan Ong <me@jongleberry.com> * Copyright (c) 2014-2015 Douglas Christopher Wilson <doug@somethingdoug.com> *  * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * 'Software'), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: *  * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. *  * THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *  */
import { createError } from "../../../deps.ts";import { read } from "./read.ts";import { getCharset } from "./getCharset.ts";import { Request, Response, NextFunction } from "../../types.ts";import { hasBody } from "../../../deps.ts";import { typeChecker } from "./typeChecker.ts";
/** * Create a middleware to parse urlencoded bodies. * * @param {object} [options] * @return {function} * @public */export function urlencoded(options: any = {}) {  const inflate = options.inflate !== false;  const type = options.type || "application/x-www-form-urlencoded";  const verify = options.verify || false;
  if (verify !== false && typeof verify !== "function") {    throw new TypeError("option verify must be function");  }
  // create the appropriate type checking function  const shouldParse = typeof type !== "function" ? typeChecker(type) : type;
  function parse(buf: string) {    return buf.length      ? Object.fromEntries(        new URLSearchParams(decodeURIComponent(buf.replace(/\+/g, " ")))          .entries(),      )      : {};  }
  return function urlencodedParser(    req: Request,    res: Response,    next: NextFunction,  ) {    if ((req as any)._isParsed) {      return next();    }
    // skip requests without bodies    if (      !hasBody(req.headers) ||      parseInt(req.headers.get("content-length") || "") === 0    ) {      (req as any).parsedBody = Object.fromEntries(        new URLSearchParams().entries(),      );      return next();    }
    // determine if request should be parsed    if (!shouldParse(req)) {      return next();    }
    // assert charset    const charset = getCharset(req) || "utf-8";    if (charset !== "utf-8") {      return next(        createError(          415,          'unsupported charset "' + charset.toUpperCase() + '"',        ),      );    }
    // read    read(req, res, next, parse, {      encoding: charset,      inflate: inflate,      verify: verify,    });  };}