Function parseEncoding

http/_negotiation/encoding.ts:40–63

(
  str: string,
  i: number,
)

const simpleEncodingRegExp = /^\s*([^\s;]+)\s*(?:;(.*))?$/;

function parseEncoding(
  str: string,
  i: number,
): EncodingSpecificity | undefined {
  const match = simpleEncodingRegExp.exec(str);
  if (!match) {
    return undefined;
  }

  const encoding = match[1]!;
  let q = 1;
  if (match[2]) {
    const params = match[2].split(";");
    for (const param of params) {
      const p = param.trim().split("=");
      if (p[0] === "q" && p[1]) {
        q = parseFloat(p[1]);
        break;
      }
    }
  }

  return { encoding, o: undefined, q, i, s: undefined };
}

function specify(
  encoding: string,