From 6cd5e4d847899b324f09d3b8fcff80ea48afb5f5 Mon Sep 17 00:00:00 2001
From: Jaco Greeff <jacogr@gmail.com>
Date: Wed, 12 Aug 2020 14:00:21 +0200
Subject: [PATCH] Strip newlines from hex input (#3403)

* Strip newlines from hex input

* Update packages/react-components/src/InputFile.tsx
---
 packages/page-sudo/src/Sudo.tsx             | 3 +--
 packages/react-components/src/InputFile.tsx | 7 ++++++-
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/packages/page-sudo/src/Sudo.tsx b/packages/page-sudo/src/Sudo.tsx
index 68a6e6e36f..e4ceef67e7 100644
--- a/packages/page-sudo/src/Sudo.tsx
+++ b/packages/page-sudo/src/Sudo.tsx
@@ -27,8 +27,7 @@ function Sudo ({ className, isMine, sudoKey }: Props): React.ReactElement<Props>
   const [weight, setWeight] = useState<BN>(BN_ZERO);
 
   const _onChangeExtrinsic = useCallback(
-    (method: SubmittableExtrinsic<'promise'> | null = null) =>
-      setMethod(() => method),
+    (method: SubmittableExtrinsic<'promise'> | null = null) => setMethod(() => method),
     []
   );
 
diff --git a/packages/react-components/src/InputFile.tsx b/packages/react-components/src/InputFile.tsx
index e7272fc62a..8aa477ff72 100644
--- a/packages/react-components/src/InputFile.tsx
+++ b/packages/react-components/src/InputFile.tsx
@@ -34,6 +34,7 @@ interface FileState {
 
 const BYTE_STR_0 = '0'.charCodeAt(0);
 const BYTE_STR_X = 'x'.charCodeAt(0);
+const STR_NL = '\n';
 const NOOP = (): void => undefined;
 
 function convertResult (result: ArrayBuffer): Uint8Array {
@@ -41,7 +42,11 @@ function convertResult (result: ArrayBuffer): Uint8Array {
 
   // this converts the input (if detected as hex), via the hex conversion route
   if (data[0] === BYTE_STR_0 && data[1] === BYTE_STR_X) {
-    const hex = u8aToString(data);
+    let hex = u8aToString(data);
+
+    while (hex[hex.length - 1] === STR_NL) {
+      hex = hex.substr(0, hex.length - 1);
+    }
 
     if (isHex(hex)) {
       return hexToU8a(hex);