Tools for building the sdcard image

scripts/create-sdcard-image.js

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+#!/usr/bin/env node
+
+const inquirer = require("inquirer");
+const { statSync } = require("fs");
+const { runCommand, initSignalHandlers, assertEffectiveRoot } = require("./util");
+
+const IMAGE_FILENAME = "onefinity-controller.img";
+
+initSignalHandlers();
+main();
+
+async function main() {
+    assertEffectiveRoot();
+
+    const { uid } = statSync(".");
+
+    const devices = runCommand("df -T msdos")
+        .split("\n")
+        .map(line => {
+            const [ disk ] = line.split(/\s+/);
+            return {
+                name: line,
+                value: {
+                    disk: disk,
+                    device: disk.replace(/s\d$/, "")
+                }
+            };
+        });
+
+    const { disk: { disk, device } } = await inquirer.prompt({
+        type: "list",
+        name: "disk",
+        choices: devices,
+        message: `Which device is the sdcard?`
+    });
+
+    runCommand(`diskutil unmount ${disk}`);
+    runCommand(`dd if=${device} of=${IMAGE_FILENAME} status=progress`, {
+        stdio: "inherit"
+    });
+    runCommand(`chown ${uid} 1f.img`);
+}