elysia/dist/deuri.mjs

Ergonomic Framework for Human

const hex = [];
for (let i = 48; i < 58; i++) hex[i] = i - 48;
for (let i = 0; i < 6; i++)
  hex[i + 65] = hex[i + 97] = i + 10;
const calcHex = (a, b) => {
  if (a in hex && b in hex) return hex[a] << 4 | hex[b];
  return 255;
};
const type = [
  ...new Array(128).fill(0),
  ...new Array(16).fill(1),
  ...new Array(16).fill(2),
  ...new Array(32).fill(3),
  4,
  4,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  5,
  6,
  7,
  7,
  7,
  7,
  7,
  7,
  7,
  7,
  7,
  7,
  7,
  7,
  8,
  7,
  7,
  10,
  9,
  9,
  9,
  11,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4,
  4
];
const next = [
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  12,
  0,
  0,
  0,
  0,
  24,
  36,
  48,
  60,
  72,
  84,
  96,
  0,
  12,
  12,
  12,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  24,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  24,
  24,
  24,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  24,
  24,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  48,
  48,
  48,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  48,
  48,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  48,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0,
  0
];
const mask = type.map(
  (val) => [
    127,
    63,
    63,
    63,
    0,
    31,
    15,
    15,
    15,
    7,
    7,
    7
  ][val]
);
const decode = (url) => {
  let percentPosition = url.indexOf("%");
  if (percentPosition === -1) return url;
  let end = url.length - 3;
  if (percentPosition > end) return null;
  let decoded = "", start = 0, codepoint = 0, startOfOctets = percentPosition, state = 12, byte;
  for (; ; ) {
    byte = calcHex(
      url.charCodeAt(percentPosition + 1),
      url.charCodeAt(percentPosition + 2)
    );
    state = next[state + type[byte]];
    if (state === 0) return null;
    if (state === 12) {
      decoded += url.substring(start, startOfOctets);
      codepoint = codepoint << 6 | byte & mask[byte];
      if (codepoint > 65535)
        decoded += String.fromCharCode(
          55232 + (codepoint >> 10),
          56320 + (codepoint & 1023)
        );
      else decoded += String.fromCharCode(codepoint);
      start = percentPosition + 3;
      percentPosition = url.indexOf("%", start);
      if (percentPosition === -1) return decoded + url.substring(start);
      if (percentPosition > end) return null;
      startOfOctets = percentPosition;
      codepoint = 0;
    } else {
      percentPosition += 3;
      if (percentPosition > end || url.charCodeAt(percentPosition) !== 37)
        return null;
      codepoint = codepoint << 6 | byte & mask[byte];
    }
  }
};
const encode = (str) => str.isWellFormed() ? encodeURIComponent(str) : null;
const decodeSegment = (url, start, end) => {
  let percentPosition = url.indexOf("%");
  if (percentPosition === -1) return url;
  end -= 3;
  if (percentPosition > end) return null;
  let decoded = "", codepoint = 0, startOfOctets = percentPosition, state = 12, byte;
  for (; ; ) {
    byte = calcHex(
      url.charCodeAt(percentPosition + 1),
      url.charCodeAt(percentPosition + 2)
    );
    state = next[state + type[byte]];
    if (state === 0) return null;
    if (state === 12) {
      decoded += url.substring(start, startOfOctets);
      codepoint = codepoint << 6 | byte & mask[byte];
      if (codepoint > 65535)
        decoded += String.fromCharCode(
          55232 + (codepoint >> 10),
          56320 + (codepoint & 1023)
        );
      else decoded += String.fromCharCode(codepoint);
      start = percentPosition + 3;
      percentPosition = url.indexOf("%", start);
      if (percentPosition === -1) return decoded + url.substring(start);
      if (percentPosition > end) return null;
      startOfOctets = percentPosition;
      codepoint = 0;
    } else {
      percentPosition += 3;
      if (percentPosition > end || url.charCodeAt(percentPosition) !== 37)
        return null;
      codepoint = codepoint << 6 | byte & mask[byte];
    }
  }
};
export {
  decode,
  decodeSegment,
  encode
};