xei-editor 3.0.1

xei (晴) — a modern terminal text editor in Rust with Vim-modal editing, syntax highlighting, file explorer, built-in terminal, and theming
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#!/usr/bin/env node

const { existsSync, mkdirSync, chmodSync, createWriteStream } = require("fs");
const { join } = require("path");
const { platform, arch } = require("os");
const { get } = require("https");
const { createGunzip } = require("zlib");
const { pipeline } = require("stream");

const VERSION = "v3.0.1";
const EXE = platform === "win32" ? ".exe" : "";
const BIN_DIR = join(__dirname, "bin");
const BIN_PATH = join(BIN_DIR, `xei${EXE}`);

try { require("fs").unlinkSync(BIN_PATH); } catch (_) {}

const targets = {
  "darwin-x64": "x86_64-apple-darwin",
  "darwin-arm64": "aarch64-apple-darwin",
  "linux-x64": "x86_64-unknown-linux-gnu",
  "linux-arm64": "aarch64-unknown-linux-gnu",
  "win32-x64": "x86_64-pc-windows-gnu",
};

const key = `${platform}-${arch}`;
const target = targets[key];

if (!target) {
  console.error(`xei: unsupported platform ${platform}-${arch}`);
  process.exit(1);
}

const url = `https://github.com/stremtec/xei/releases/download/${VERSION}/xei-${target}${EXE}.gz`;

mkdirSync(BIN_DIR, { recursive: true });

get(url, (res) => {
  if (res.statusCode === 302 || res.statusCode === 301) {
    get(res.headers.location, onResponse).on("error", onError);
    return;
  }
  onResponse(res);
}).on("error", onError);

function onResponse(res) {
  if (res.statusCode !== 200) {
    console.error(`xei: HTTP ${res.statusCode} — binary not found for ${target}`);
    console.error("xei: install via cargo instead:  cargo install xei-editor");
    process.exit(1);
  }
  const file = createWriteStream(BIN_PATH);
  pipeline(res, createGunzip(), file, (err) => {
    if (err) { onError(err); return; }
    try { chmodSync(BIN_PATH, 0o755); } catch (_) {}
  });
}

function onError(err) {
  console.error(`xei: download failed: ${err.message}`);
  process.exit(1);
}