malformedUrl

This tag emulates a defective encoder found on a web site.

Created by: hackvertor

Installed 1 times

Category: Convert

Created on: Thursday, January 30, 2025 at 9:46:05 AM

Updated on: Tuesday, March 11, 2025 at 11:51:53 AM

This is a built in tag

Tag arguments
[]

Code

class malformedUrl {
  encode(input) {
    const nibbleCharMap = [
      "0",
      "!",
      '"',
      "^",
      "$",
      "5",
      "&",
      "'",
      "(",
      ")",
      "*",
      "+",
      ",",
      "-",
      ".",
      "/",
    ];

    return Array.from(input)
      .map((ch) => {
        const code = ch.codePointAt(0);
        const adjusted = code - 16;
        const high = adjusted >> 4;
        const low = adjusted & 15;
        return `%${nibbleCharMap[high]}${nibbleCharMap[low]}`;
      })
      .join("");
  }

  decode(input) {
    return input.replace(/%(..)/gi, function ($0, c) {
      return String.fromCodePoint(
        parseInt(
          (c.charAt(0).codePointAt(0) % 0x10).toString(16) +
            (c.charAt(1).codePointAt(0) % 0x10).toString(16),
          16,
        ),
      );
    });
  }
}