From 9ea2787ba266216068c4526bd252f1274c796564 Mon Sep 17 00:00:00 2001
From: Eric Rumsey <ehrumsey@gmail.com>
Date: Mon, 19 May 2025 15:31:32 -0500
Subject: [PATCH] Add dynamic ANSI buffer codes

---
 src/lib/util/ansi.ts | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/src/lib/util/ansi.ts b/src/lib/util/ansi.ts
index df0bd52..475223f 100644
--- a/src/lib/util/ansi.ts
+++ b/src/lib/util/ansi.ts
@@ -88,6 +88,8 @@ export const ANSI_BUFFERS = {
   GET_CURSOR_POSITION: encoder.encode(ANSI.GET_CURSOR_POSITION),
   SAVE_CURSOR: encoder.encode(ANSI.SAVE_CURSOR),
   RESTORE_CURSOR: encoder.encode(ANSI.RESTORE_CURSOR),
+
+  // Screen Control
   CLEAR_SCREEN: encoder.encode(ANSI.CLEAR_SCREEN),
   CLEAR_LINE: encoder.encode(ANSI.CLEAR_LINE),
   CLEAR_TO_END: encoder.encode(ANSI.CLEAR_TO_END),
@@ -95,10 +97,19 @@ export const ANSI_BUFFERS = {
   CLEAR_BELOW: encoder.encode(ANSI.CLEAR_BELOW),
 };
 
+export const ANSI_DYNAMIC = {
+  // Cursor Control
+  CURSOR_TO: (x: number, y: number) => encoder.encode(ANSI.CURSOR_TO(x, y)),
+  CURSOR_UP: (x = 1) => encoder.encode(ANSI.CURSOR_UP(x)),
+  CURSOR_DOWN: (x = 1) => encoder.encode(ANSI.CURSOR_DOWN(x)),
+  CURSOR_FORWARD: (x = 1) => encoder.encode(ANSI.CURSOR_FORWARD(x)),
+  CURSOR_BACK: (x = 1) => encoder.encode(ANSI.CURSOR_BACK(x)),
+};
+
 type AnsiBufferKey = keyof typeof ANSI_BUFFERS;
 
 export async function writeAnsi(
-  codes: AnsiBufferKey[],
+  codes: (AnsiBufferKey | Uint8Array)[],
   text?: string,
   autoReset: boolean = true
 ): Promise<Result<number, Error>> {
@@ -106,7 +117,11 @@ export async function writeAnsi(
 
   // Add requested ANSI codes
   for (const code of codes) {
-    buffers.push(ANSI_BUFFERS[code]);
+    if (code instanceof Uint8Array) {
+      buffers.push(code);
+    } else {
+      buffers.push(ANSI_BUFFERS[code]);
+    }
   }
 
   // Add optional text