initial commit

scripts/orderfile/cli-fixture.js

@@ -0,0 +1,30 @@
+// The interactive workload for scripts/orderfile/generate.ts. Reads stdin,
+// writes stdout, drives readline. Traced twice: once on a pipe, once on a
+// terminal (ptyrun.c), which is the only way to reach isatty, the window size,
+// raw mode, and readline's line editor with its cursor escapes.
+//
+// Fed "world\none\ntwo\nquit\n". `quit` is what makes it exit, so it never has
+// to wait for an end-of-input that a terminal may not deliver.
+const { createInterface } = require("node:readline");
+
+const terminal = Boolean(process.stdin.isTTY && process.stdout.isTTY);
+process.stdout.write(`tty=${terminal} ${process.stdout.columns ?? 0}x${process.stdout.rows ?? 0}\n`);
+process.stdout.write(Buffer.alloc(8192, 0x2e)); // more than one write's worth
+if (terminal) {
+  process.stdout.write(`\ncolors=${process.stdout.hasColors?.(256)}\n`);
+  process.stdin.setRawMode(true);
+  process.stdin.setRawMode(false);
+}
+
+const rl = createInterface({ input: process.stdin, output: process.stdout, terminal, prompt: "> " });
+let lines = 0;
+rl.question("\nname? ", name => {
+  process.stdout.write(`hi ${name.trim()}\n`);
+  rl.on("line", line => {
+    process.stdout.write(`${++lines}: ${line.trim()}\n`);
+    if (line.trim() === "quit") return rl.close();
+    rl.prompt();
+  });
+  rl.prompt();
+});
+rl.on("close", () => process.stdout.write(`read ${lines} lines\n`));