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x/fen/tool/body.ts

a simple web framework for deno
fen-land/deno-fen
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/** * tool/body.ts * Body evolved tool are save here * @author DominicMing */
// this is a global encoder, using by allconst encoder = new TextEncoder();
/** * encode body if body type supported * @param body * @return Uint8Array */export function bodyEncoder(body: any) {  let result = encoder.encode("");
  if (body instanceof Uint8Array) {    result = body;  } else if (typeof body === "string") {    result = encoder.encode(body);  } else if (typeof body === "object") {    let jsonStr = "";    try {      jsonStr = JSON.stringify(body);    } catch (e) {      console.warn("unable to encode body, it's not in right form");    }    result = encoder.encode(jsonStr);  }
  return result;}
/** * decode body if the content-type supported * @param body {Uint8Array} * @param header {Headers} * @return {string|Uint8Array|Object} */export function bodyDecoder(body: Uint8Array, header: Headers) {  if (header.has("content-type")) {    let ct = header.get("content-type");
    if (!ct) {      return body;    }
    let charset = ct.match(/charset="([^]*)"/i);    let decoder = new TextDecoder(charset ? charset[1] : "utf-8");
    if (/application\/x-www-form-urlencoded/i.test(ct)) {      let ctt = decoder.decode(body);      let obj = {} as { [key: string]: string };
      ctt.split("&").map((e) => {        let [k, v] = e.trim().split("=");        let key = decodeURIComponent(k);        obj[key] = decodeURIComponent(v || "");      });
      return obj;    }
    if (ct && /application\/json/i.test(ct)) {      let obj = {};      let ctt = decoder.decode(body);
      try {        obj = JSON.parse(ctt);      } catch (e) {        console.error("Error while parse json", e);      }
      return obj;    }
    if (ct && ct.includes("text")) {      return decoder.decode(body);    }  }
  return body;}
/** * generate error body * @param status {number} * @param info {string} * @return string */export function errorBodyGen(status: number, info: string) {  return `<html lang="en">    <head>        <title>Fen - ${status}</title>    </head>    <body>        <h1>Error: ${status}!</h1>        <p>${info}</p>    </body></html>    `;}