fix #https://github.com/microsoft/vscode/issues/123000

2021-05-05 08:21:26 -07:00
parent e5c9b0e27f
commit be32590ef0
3 changed files with 52 additions and 2 deletions
@@ -0,0 +1,16 @@
+/**
+ * Copyright (c) 2021 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { IBufferRange } from 'xterm';
+
+export function getRangeLength(range: IBufferRange, cols: number): number {
+  if (range.start.y === range.end.y) {
+    return range.end.x - range.start.x;
+  }
+  if (range.start.y > range.end.y) {
+    throw new Error(`Buffer range end (${range.end.x}, ${range.end.y}) cannot be before start (${range.start.x}, ${range.start.y})`);
+  }
+  return cols * (range.end.y - range.start.y - 1) + cols - range.start.x + range.end.x;
+}