Function dataURLProcessor

deps/undici/undici.js:4364–4400

(dataURL)

    var HTTP_WHITESPACE_REGEX = /[\u000A\u000D\u0009\u0020]/u;
    var HTTP_QUOTED_STRING_TOKENS = /^[\u0009\u0020-\u007E\u0080-\u00FF]+$/u;
    function dataURLProcessor(dataURL) {
      assert(dataURL.protocol === "data:");
      let input = URLSerializer(dataURL, true);
      input = input.slice(5);
      const position = { position: 0 };
      let mimeType = collectASequenceOfCodePointsFast(
        ",",
        input,
        position
      );
      const mimeTypeLength = mimeType.length;
      mimeType = removeASCIIWhitespace(mimeType, true, true);
      if (position.position >= input.length) {
        return "failure";
      }
      position.position++;
      const encodedBody = input.slice(mimeTypeLength + 1);
      let body = stringPercentDecode(encodedBody);
      if (/;(?:\u0020*)base64$/ui.test(mimeType)) {
        const stringBody = isomorphicDecode(body);
        body = forgivingBase64(stringBody);
        if (body === "failure") {
          return "failure";
        }
        mimeType = mimeType.slice(0, -6);
        mimeType = mimeType.replace(/(\u0020+)$/u, "");
        mimeType = mimeType.slice(0, -1);
      }
      if (mimeType.startsWith(";")) {
        mimeType = "text/plain" + mimeType;
      }
      let mimeTypeRecord = parseMIMEType(mimeType);
      if (mimeTypeRecord === "failure") {
        mimeTypeRecord = parseMIMEType("text/plain;charset=US-ASCII");
      }
      return { mimeType: mimeTypeRecord, body };
    }
    __name(dataURLProcessor, "dataURLProcessor");
    function URLSerializer(url, excludeFragment = false) {
      if (!excludeFragment) {