1 files changed, 73 insertions, 0 deletions
diff --git a/src/ui.c b/src/ui.c
new file mode 100644
index 0000000..68f32a0
--- /dev/null
+++ b/src/ui.c
@@ -0,0 +1,73 @@
+#include <atari.h>
+#include <stdio.h>
+#include "irc.h"
+#include <conio.h>
+#include "conio.h"
+
+#define MAX_INPUT_LEN 119
+
+static char input_buffer[MAX_INPUT_LEN + 1];
+static short inbuf_len = 0;
+
+void ui_init(void) {
+	OS.escflg = 0;
+	inbuf_len = input_buffer[0] = 0;
+}
+
+void ui_start_msg() {
+	/* TODO: use msg_src and msg_dest to decide which window to
+	   print to (when we have multi-window support) */
+	OS.crsinh = 1;
+	putchar(CH_DELLINE);
+}
+
+void ui_end_msg(void) {
+	OS.crsinh = 0;
+	// putchar(CH_EOL); // NO!
+	if(inbuf_len) print(input_buffer);
+}
+
+void ui_print(const char *str) {
+	OS.escflg = 0x80;
+	print(str);
+	OS.escflg = 0;
+}
+
+void ui_putchar(char c) {
+	putchar(c);
+}
+
+void ui_keystroke(void) {
+	char c;
+
+	OS.escflg = 0x80;
+
+	/* pressing ctrl-3 (aka EOF) crashes cc65-compiled binaries *hard*,
+	   so don't allow it. */
+	if(OS.ch == (KEY_3 | KEY_CTRL)) {
+		OS.ch = KEY_NONE;
+		return;
+	}
+
+	c = cgetc();
+
+	if(c == CH_EOL && !inbuf_len)
+		return; /* ignore empty message */
+
+	if(c == CH_DEL && inbuf_len) {
+		OS.escflg = 0;
+		putchar(c);
+		OS.escflg = 0x80;
+		input_buffer[inbuf_len--] = 0;
+	} else if(inbuf_len == MAX_INPUT_LEN) {
+		return; /* ignore */
+	} else {
+		putchar(c);
+		input_buffer[inbuf_len++] = c;
+		input_buffer[inbuf_len] = 0;
+		if(c == CH_EOL) {
+			cmd_command(input_buffer);
+			ui_init();
+		}
+	}
+}