From 6a848b14f8937a2d552f03c5ce363229fcfdae10 Mon Sep 17 00:00:00 2001
From: Mikaela Szekely <qyriad@gmail.com>
Date: Sat, 19 Jan 2019 18:21:19 -0700
Subject: [PATCH] Allow passing length in hex with 0x notation

---
 Cargo.lock  |  2 ++
 src/main.rs | 10 +++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/Cargo.lock b/Cargo.lock
index e2bb7fe..45123a3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,3 +1,5 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
 [[package]]
 name = "ansi_term"
 version = "0.11.0"
diff --git a/src/main.rs b/src/main.rs
index 07b65a2..4a12d86 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -274,7 +274,15 @@ fn run() -> Result<(), Box<::std::error::Error>> {
 
     let length_arg = matches.value_of("length").or(matches.value_of("bytes"));
 
-    if let Some(length) = length_arg.and_then(|n| n.parse::<u64>().ok()) {
+    if let Some(length) = length_arg.and_then(|n| {
+        if n.starts_with("0x") {
+            u64::from_str_radix(n.trim_start_matches("0x"), 16).ok()
+        }
+        else {
+            n.parse::<u64>().ok()
+        }
+    })
+    {
         reader = Box::new(reader.take(length));
     }