thelounge/src/command-line/utils.js

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"use strict";
const _ = require("lodash");
const colors = require("colors/safe");
const fs = require("fs");
const Helper = require("../helper");
const path = require("path");
let home;
class Utils {
static extraHelp() {
[
"",
"",
" Environment variable:",
"",
` THELOUNGE_HOME Path for all configuration files and folders. Defaults to ${colors.green(Helper.expandHome(Utils.defaultHome()))}.`,
"",
].forEach((e) => log.raw(e));
}
static defaultHome() {
if (home) {
return home;
}
const distConfig = path.resolve(path.join(
__dirname,
"..",
"..",
".thelounge_home"
));
home = fs.readFileSync(distConfig, "utf-8").trim();
return home;
}
// Parses CLI options such as `-c public=true`, `-c debug.raw=true`, etc.
static parseConfigOptions(val, memo) {
// Invalid option that is not of format `key=value`, do nothing
if (!val.includes("=")) {
return memo;
}
const parseValue = (value) => {
if (value === "true") {
return true;
} else if (value === "false") {
return false;
} else if (value === "undefined") {
return undefined;
} else if (value === "null") {
return null;
} else if (/^\[.*\]$/.test(value)) { // Arrays
// Supporting arrays `[a,b]` and `[a, b]`
const array = value.slice(1, -1).split(/,\s*/);
// If [] is given, it will be parsed as `[ "" ]`, so treat this as empty
if (array.length === 1 && array[0] === "") {
return [];
}
return array.map(parseValue); // Re-parses all values of the array
}
return value;
};
// First time the option is parsed, memo is not set
if (memo === undefined) {
memo = {};
}
// Note: If passed `-c foo="bar=42"` (with single or double quotes), `val`
// will always be passed as `foo=bar=42`, never with quotes.
const position = val.indexOf("="); // Only split on the first = found
const key = val.slice(0, position);
const value = val.slice(position + 1);
const parsedValue = parseValue(value);
if (_.has(memo, key)) {
log.warn(`Configuration key ${colors.bold(key)} was already specified, ignoring...`);
} else {
memo = _.set(memo, key, parsedValue);
}
return memo;
}
}
module.exports = Utils;