scroll/src/deno/mod.ts

/**
 * The main entrypoint when using Deno as the runtime
 */
import { getTermios } from '../common/termios.ts';
import { ctrl_key, is_control } from '../common/strings.ts';

export async function main(): Promise<number> {
	const t = await getTermios();
	t.enableRawMode();

	const decoder = new TextDecoder();
	for await (const chunk of Deno.stdin.readable) {
		const char = String(decoder.decode(chunk));

		if (char === ctrl_key('q')) {
			t.disableRawMode();
			return 0;
		}

		if (is_control(char)) {
			console.log(char.codePointAt(0) + '\r');
		} else {
			console.log(`${char} ('${char.codePointAt(0)}')\r`);
		}
	}

	return -1;
}