@substrate-system/bencode/dist/encoding-length.js

Bencode de/encoder

var __defProp = Object.defineProperty;
var __name = (target, value) => __defProp(target, "name", { value, configurable: true });
import { text2arr } from "@substrate-system/uint8-util";
import { digitCount, getType } from "./util.js";
function listLength(list) {
  let length = 1 + 1;
  for (const value of list) {
    length += encodingLength(value);
  }
  return length;
}
__name(listLength, "listLength");
function mapLength(map) {
  let length = 1 + 1;
  for (const [key, value] of map) {
    const keyLength = text2arr(key).byteLength;
    length += digitCount(keyLength) + 1 + keyLength;
    length += encodingLength(value);
  }
  return length;
}
__name(mapLength, "mapLength");
function objectLength(value) {
  let length = 1 + 1;
  const keys = Object.keys(value);
  for (let i = 0; i < keys.length; i++) {
    const keyLength = text2arr(keys[i]).byteLength;
    length += digitCount(keyLength) + 1 + keyLength;
    length += encodingLength(value[keys[i]]);
  }
  return length;
}
__name(objectLength, "objectLength");
function stringLength(value) {
  const length = text2arr(value).byteLength;
  return digitCount(length) + 1 + length;
}
__name(stringLength, "stringLength");
function arrayBufferLength(value) {
  const length = value.byteLength - value.byteOffset;
  return digitCount(length) + 1 + length;
}
__name(arrayBufferLength, "arrayBufferLength");
function encodingLength(value) {
  const length = 0;
  if (value == null) return length;
  const type = getType(value);
  switch (type) {
    case "arraybufferview":
      return arrayBufferLength(value);
    case "string":
      return stringLength(value);
    case "array":
    case "set":
      return listLength(value);
    case "number":
      return 1 + digitCount(Math.floor(value)) + 1;
    case "bigint":
      return 1 + value.toString().length + 1;
    case "object":
      return objectLength(value);
    case "map":
      return mapLength(value);
    default:
      throw new TypeError(`Unsupported value of type "${type}"`);
  }
}
__name(encodingLength, "encodingLength");
var encoding_length_default = encodingLength;
export {
  encoding_length_default as default,
  encodingLength
};
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