Sindbad~EG File Manager

"use strict";
const _ = require("lodash");
function stringifyRangeBound(bound) {
  if (bound === null) {
    return "";
  }
  if (bound === Infinity || bound === -Infinity) {
    return bound.toString().toLowerCase();
  }
  return JSON.stringify(bound);
}
function parseRangeBound(bound, parseType) {
  if (!bound) {
    return null;
  }
  if (bound === "infinity") {
    return Infinity;
  }
  if (bound === "-infinity") {
    return -Infinity;
  }
  return parseType(bound);
}
function stringify(data) {
  if (data === null)
    return null;
  if (!Array.isArray(data))
    throw new Error("range must be an array");
  if (!data.length)
    return "empty";
  if (data.length !== 2)
    throw new Error("range array length must be 0 (empty) or 2 (lower and upper bounds)");
  if (Object.prototype.hasOwnProperty.call(data, "inclusive")) {
    if (data.inclusive === false)
      data.inclusive = [false, false];
    else if (!data.inclusive)
      data.inclusive = [true, false];
    else if (data.inclusive === true)
      data.inclusive = [true, true];
  } else {
    data.inclusive = [true, false];
  }
  _.each(data, (value, index) => {
    if (_.isObject(value)) {
      if (Object.prototype.hasOwnProperty.call(value, "inclusive"))
        data.inclusive[index] = !!value.inclusive;
      if (Object.prototype.hasOwnProperty.call(value, "value"))
        data[index] = value.value;
    }
  });
  const lowerBound = stringifyRangeBound(data[0]);
  const upperBound = stringifyRangeBound(data[1]);
  return `${(data.inclusive[0] ? "[" : "(") + lowerBound},${upperBound}${data.inclusive[1] ? "]" : ")"}`;
}
exports.stringify = stringify;
function parse(value, parser) {
  if (value === null)
    return null;
  if (value === "empty") {
    return [];
  }
  let result = value.substring(1, value.length - 1).split(",", 2);
  if (result.length !== 2)
    return value;
  result = result.map((item, index) => {
    return {
      value: parseRangeBound(item, parser),
      inclusive: index === 0 ? value[0] === "[" : value[value.length - 1] === "]"
    };
  });
  return result;
}
exports.parse = parse;
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