move terminal.ts and keys.ts into the emulator folder

src/rt/emulator/keys.ts

@@ -0,0 +1,34 @@
+import run from "../shell/command/command"
+import history from "../shell/history"
+
+type InputClosure = (key_event: KeyboardEvent) => void
+interface EnterArgs {
+	readonly term_win_safe: HTMLElement,
+	readonly ps1input: HTMLInputElement,
+	readonly closure: InputClosure
+}
+interface Keys {
+	enter: (input: EnterArgs) => void,
+	up_arrow: (ps1input: HTMLInputElement) => void,
+	down_arrow: (ps1input: HTMLInputElement) => void,
+}
+
+const keys = {} as Keys
+
+keys.enter = function(input: EnterArgs) {
+	const unknown_command_msg = run(input.term_win_safe, input.ps1input.value)
+	if (unknown_command_msg) {
+		input.term_win_safe.appendChild(unknown_command_msg)
+	}
+	input.ps1input.removeEventListener("keydown", input.closure)
+}
+
+keys.up_arrow = function(ps1input: HTMLInputElement) {
+	history.index_up(ps1input)
+}
+
+keys.down_arrow = function(ps1input: HTMLInputElement) {
+	history.index_down(ps1input)
+}
+
+export default keys