From e49d1e16ca2fca45e959c1add9b5a1d6866dbb90 Mon Sep 17 00:00:00 2001
From: "Kevin (Kun) \"Kassimo\" Qian" <kevinkassimo@gmail.com>
Date: Tue, 23 Jul 2019 08:16:39 -0700
Subject: feat: expose writeAll() and writeAllSync() (#2298)

Symmetric with `readAll()` and `readAllSync()`. Also used in `xeval`.
Also correct usage in `writeFile()`/`writeFileSync()`.
---
 js/buffer.ts | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'js/buffer.ts')

diff --git a/js/buffer.ts b/js/buffer.ts
index 1f597282d..9525e6954 100644
--- a/js/buffer.ts
+++ b/js/buffer.ts
@@ -274,3 +274,21 @@ export function readAllSync(r: SyncReader): Uint8Array {
   buf.readFromSync(r);
   return buf.bytes();
 }
+
+/** Write all the content of `arr` to `w`.
+ */
+export async function writeAll(w: Writer, arr: Uint8Array): Promise<void> {
+  let nwritten = 0;
+  while (nwritten < arr.length) {
+    nwritten += await w.write(arr.subarray(nwritten));
+  }
+}
+
+/** Write synchronously all the content of `arr` to `w`.
+ */
+export function writeAllSync(w: SyncWriter, arr: Uint8Array): void {
+  let nwritten = 0;
+  while (nwritten < arr.length) {
+    nwritten += w.writeSync(arr.subarray(nwritten));
+  }
+}
-- 
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