1 files changed, 137 insertions, 0 deletions
diff --git a/ext/node/polyfills/internal/readline/callbacks.mjs b/ext/node/polyfills/internal/readline/callbacks.mjs
new file mode 100644
index 000000000..3be88c899
--- /dev/null
+++ b/ext/node/polyfills/internal/readline/callbacks.mjs
@@ -0,0 +1,137 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+"use strict";
+
+import { ERR_INVALID_ARG_VALUE, ERR_INVALID_CURSOR_POS } from "internal:deno_node/polyfills/internal/errors.ts";
+
+import { validateFunction } from "internal:deno_node/polyfills/internal/validators.mjs";
+
+import { CSI } from "internal:deno_node/polyfills/internal/readline/utils.mjs";
+
+const {
+  kClearLine,
+  kClearScreenDown,
+  kClearToLineBeginning,
+  kClearToLineEnd,
+} = CSI;
+
+/**
+ * moves the cursor to the x and y coordinate on the given stream
+ */
+
+export function cursorTo(stream, x, y, callback) {
+  if (callback !== undefined) {
+    validateFunction(callback, "callback");
+  }
+
+  if (typeof y === "function") {
+    callback = y;
+    y = undefined;
+  }
+
+  if (Number.isNaN(x)) throw new ERR_INVALID_ARG_VALUE("x", x);
+  if (Number.isNaN(y)) throw new ERR_INVALID_ARG_VALUE("y", y);
+
+  if (stream == null || (typeof x !== "number" && typeof y !== "number")) {
+    if (typeof callback === "function") process.nextTick(callback, null);
+    return true;
+  }
+
+  if (typeof x !== "number") throw new ERR_INVALID_CURSOR_POS();
+
+  const data = typeof y !== "number" ? CSI`${x + 1}G` : CSI`${y + 1};${x + 1}H`;
+  return stream.write(data, callback);
+}
+
+/**
+ * moves the cursor relative to its current location
+ */
+
+export function moveCursor(stream, dx, dy, callback) {
+  if (callback !== undefined) {
+    validateFunction(callback, "callback");
+  }
+
+  if (stream == null || !(dx || dy)) {
+    if (typeof callback === "function") process.nextTick(callback, null);
+    return true;
+  }
+
+  let data = "";
+
+  if (dx < 0) {
+    data += CSI`${-dx}D`;
+  } else if (dx > 0) {
+    data += CSI`${dx}C`;
+  }
+
+  if (dy < 0) {
+    data += CSI`${-dy}A`;
+  } else if (dy > 0) {
+    data += CSI`${dy}B`;
+  }
+
+  return stream.write(data, callback);
+}
+
+/**
+ * clears the current line the cursor is on:
+ *   -1 for left of the cursor
+ *   +1 for right of the cursor
+ *    0 for the entire line
+ */
+
+export function clearLine(stream, dir, callback) {
+  if (callback !== undefined) {
+    validateFunction(callback, "callback");
+  }
+
+  if (stream === null || stream === undefined) {
+    if (typeof callback === "function") process.nextTick(callback, null);
+    return true;
+  }
+
+  const type = dir < 0
+    ? kClearToLineBeginning
+    : dir > 0
+    ? kClearToLineEnd
+    : kClearLine;
+  return stream.write(type, callback);
+}
+
+/**
+ * clears the screen from the current position of the cursor down
+ */
+
+export function clearScreenDown(stream, callback) {
+  if (callback !== undefined) {
+    validateFunction(callback, "callback");
+  }
+
+  if (stream === null || stream === undefined) {
+    if (typeof callback === "function") process.nextTick(callback, null);
+    return true;
+  }
+
+  return stream.write(kClearScreenDown, callback);
+}