line input sample

1 files changed, 41 insertions, 0 deletions

diff --git a/samples/input.golem b/samples/input.golem
new file mode 100644
index 0000000..6cdbb1d
--- /dev/null
+++ b/samples/input.golem
@@ -0,0 +1,41 @@
+main() => input(">>> ") |> print();
+
+define INPUT_BUF_SIZE = 256;
+global input_buf[INPUT_BUF_SIZE] = 0;
+input(prompt) {
+	local i = 0;
+	local c;
+	print(prompt);
+	loop {
+		if (i >= INPUT_BUF_SIZE)
+			return input_buf;
+		red &c;
+		if (c == 0x7f) {
+			// backspace
+			if (i > 0) {
+				i = i - 1;
+				[input_buf + i] = 0;
+				wrt '\r';
+				print(prompt);
+				print(input_buf);
+				wrt ' ';
+			}
+		} else
+			[input_buf + i++] = c;
+		wrt '\r';
+		print(prompt);
+		print(input_buf);
+		if (c == '\n')
+			return input_buf;
+	}
+	return input_buf;
+}
+
+print(s) {
+	loop {
+		if ([s] == 0)
+			return;
+		wrt [s];
+		s = s + 1;
+	}
+}