initial

1 files changed, 39 insertions, 0 deletions

diff --git a/ui.ha b/ui.ha
new file mode 100644
index 0000000..31a1865
--- /dev/null
+++ b/ui.ha
@@ -0,0 +1,39 @@
+use fmt;
+use io;
+use os;
+use unix::tty;
+
+fn clear() void = {
+	fmt::fprint(os::stdout_file, "\x1b[H\x1b[2J\x1b[3J")!;
+};
+
+fn put_at(x: int, y: int, s: str) void = {
+	// 0 indexed!
+	fmt::fprintf(os::stdout_file, "\x1b[{};{}H{}", y+1,x+1, s)!;
+};
+
+fn get_key() u8 = {
+	// bad
+	let b = [0u8];
+	io::read(os::stdin_file, b)!;
+	return b[0];
+};
+
+fn setup_term() tty::termios = {
+	const term = tty::termios_query(os::stdin_file)!;
+	tty::makeraw(&term)!;
+
+	// alternate screen, hide cursor
+	fmt::fprint(os::stdout_file, "\x1b[?1049h\x1b[?25l")!;
+
+	clear();
+
+	return term;
+};
+
+fn finish_term(term: *tty::termios) void = {
+	// normal screen, show cursor
+	fmt::fprint(os::stdout_file, "\x1b[?1049l\x1b[?25h")!;
+
+	tty::termios_restore(term);
+};