/
buildRegex.js
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/
buildRegex.js
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"use strict";
const fs = require("fs");
const path = require("path");
const txtPath = path.resolve(__dirname, "./tld.txt");
const regexPath = path.resolve(__dirname, "../tld.js");
console.log("Reading " + txtPath + " ...");
const txtContent = fs.readFileSync(txtPath, "utf8");
const icannContent = txtContent.slice(
txtContent.indexOf("// ===BEGIN ICANN DOMAINS==="),
txtContent.indexOf("// ===END ICANN DOMAINS===")
);
const privateContent = txtContent.slice(
txtContent.indexOf("// ===BEGIN PRIVATE DOMAINS==="),
txtContent.indexOf("// ===END PRIVATE DOMAINS===")
);
const icannTld = icannContent.replace(/(\/\/.+)\r?\n/gi, "")
.replace(/[\r?\n]+/g, "|")
.replace(/\./g, "\\.")
.replace(/\*/g, "[^.]+")
.slice(1, -1);
const privateTld = privateContent.replace(/(\/\/.+)\r?\n/gi, "")
.replace(/[\r?\n]+/g, "|")
.replace(/\./g, "\\.")
.replace(/\*/g, "[^.]+")
.slice(1, -1);
const src = [
'"use strict";',
"",
"exports = module.exports = /\\.(" + icannTld + "|$" + privateTld + ")$/;",
"exports.icann = /\\.(" + icannTld + ")$/;",
"exports.private = /\\.(" + privateTld + ")$/;",
].join("\n");
console.log("Writing module at " + regexPath + " ...");
fs.writeFileSync(regexPath, src, "utf8");
console.log("Checking if it's valid JavaScript ...");
const regex = require(regexPath); // eslint-disable-line import/no-dynamic-require
if (regex instanceof RegExp === false) {
throw new Error("Generated regex is not instanceof RegExp. Instead saw " + regex);
}
console.log("Regex is ok, exiting now");