From b9cf4251f8dcd843bba3a984ac87950fc78eb7f3 Mon Sep 17 00:00:00 2001
From: Julian Hurst <ark@mansus.space>
Date: Fri, 16 Dec 2022 11:12:47 +0100
Subject: Add support for nul terminated output

---
 handlers.ha | 22 ++++++++++++++++------
 main.ha     | 17 +++++++++++++++++
 2 files changed, 33 insertions(+), 6 deletions(-)

diff --git a/handlers.ha b/handlers.ha
index dda5c51..c4f28db 100644
--- a/handlers.ha
+++ b/handlers.ha
@@ -47,14 +47,19 @@ fn runehandler(l: *widget::widget, r: libtui::key) bool = {
 		// to print properly suspend the ui, print, then resume
 		libtui::suspend(&l.widget.ui);
 		//fmt::println(l.items[l.cursor])!;
+		const termchar = if (nulterm) {
+			yield "\0";
+		} else {
+			yield "\n";
+		};
 		match (list::selected(*l)) {
 		case let s: str =>
-			fmt::println(s)!;
+			fmt::printf("{}{}", s, termchar)!;
 		case let s: []str =>
 			defer free(s);
-			const out = strings::join("\n", s...);
+			const out = strings::join(termchar, s...);
 			defer free(out);
-			fmt::println(out)!;
+			fmt::printf("{}{}", out, termchar)!;
 		};
 		libtui::resume(&l.widget.ui);
 		return true;
@@ -222,14 +227,19 @@ fn runehandler(l: *widget::widget, r: libtui::key) bool = {
 			// to print properly suspend the ui, print, then resume
 			libtui::suspend(&l.widget.ui);
 			//fmt::println(l.items[l.cursor])!;
+			const termchar = if (nulterm) {
+				yield "\0";
+			} else {
+				yield "\n";
+			};
 			match (list::selected(*l)) {
 			case let s: str =>
-				fmt::println(s)!;
+				fmt::printf("{}{}", s, termchar)!;
 			case let s: []str =>
 				defer free(s);
-				const out = strings::join("\n", s...);
+				const out = strings::join(termchar, s...);
 				defer free(out);
-				fmt::println(out)!;
+				fmt::printf("{}{}", out, termchar)!;
 			};
 			libtui::resume(&l.widget.ui);
 			return true;
diff --git a/main.ha b/main.ha
index 40718e6..467f773 100644
--- a/main.ha
+++ b/main.ha
@@ -11,12 +11,15 @@ use unix::tty;
 use unix::signal;
 use unix::poll;
 use errors;
+use getopt;
 
 let u: mainUI = mainUI {...};
 
 let searchterm: str = "";
 let searchforward: bool = true;
 
+let nulterm: bool = false;
+
 type mainUI = struct {
 	list: *list::listwidget,
 };
@@ -72,6 +75,20 @@ fn resize(list: *list::listwidget) void = {
 };
 
 export fn main() void = {
+	const cmd = getopt::parse(os::args,
+		"interactive list",
+		('0', "NUL terminated output")
+	);
+	defer getopt::finish(&cmd);
+
+	for (let i = 0z; i < len(cmd.opts); i += 1) {
+		const opt = cmd.opts[i];
+		switch (opt.0) {
+		case '0' =>
+			nulterm = true;
+		};
+	};
+
 	let in = match (io::drain(os::stdin)) {
 	case let in: []u8 =>
 		yield in;
-- 
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