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tools.js
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tools.js
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"use strict";
const fs = require("fs");
class CustomError extends Error {
constructor(ErrorName, ...params) {
super(...params);
Error.captureStackTrace(this, CustomError);
this.name = ErrorName;
}
}
function dotObject(obj, is, value) {
if (typeof is === "string") {
return dotObject(obj, is.split("."), value);
} else if (is.length === 1 && value !== undefined) {
obj[is[0]] = value;
return obj;
} else if (is.length === 0) {
return obj;
} else if (is[0] in obj) {
return dotObject(obj[is[0]], is.slice(1), value);
} else {
return obj;
}
}
function parseDotNotation(str, val, obj) {
const keys = str.split(".");
let currentObj = obj;
for (let i = 0; i < keys.length - 1; i++) {
const key = keys[i];
currentObj[key] = currentObj[key] || {};
currentObj = currentObj[key];
}
currentObj[keys[keys.length - 1]] = val;
delete obj[str];
}
function ObjExpand(obj) {
for (const key in obj) {
if (key.includes(".")) {
parseDotNotation(key, obj[key], obj);
}
}
return obj;
}
async function ReadConfig(file) {
if (!fs.existsSync(file)) {
throw new CustomError("ERROR_FILE", "File not exists");
}
try {
const strConf = fs.readFileSync(file, "utf8");
const config = JSON.parse(strConf);
if ("env" in config && Array.isArray(config.env)) {
for (const str of config.env) {
const val_env = dotObject(config, str);
const value = process.env[val_env];
if (value) {
dotObject(config, str, value);
}
}
}
return config;
} catch (e) {
throw new CustomError("ERROR_READ", e.message);
}
}
module.exports = {
ObjExpand,
dotObject,
CustomError,
ReadConfig,
};