From cdf1da28724d711393a886597174956b7b86d03c Mon Sep 17 00:00:00 2001
From: Wolfgang Bumiller <w.bumiller@proxmox.com>
Date: Wed, 15 Jul 2020 11:53:19 +0200
Subject: [PATCH] tools: add strip_ascii_whitespace for byte slices

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
---
 src/tools.rs | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/tools.rs b/src/tools.rs
index 4bfc35c8..44db796d 100644
--- a/src/tools.rs
+++ b/src/tools.rs
@@ -647,3 +647,14 @@ pub fn setup_safe_path_env() {
         std::env::remove_var(name);
     }
 }
+
+pub fn strip_ascii_whitespace(line: &[u8]) -> &[u8] {
+    let line = match line.iter().position(|&b| !b.is_ascii_whitespace()) {
+        Some(n) => &line[n..],
+        None => return &[],
+    };
+    match line.iter().rev().position(|&b| !b.is_ascii_whitespace()) {
+        Some(n) => &line[..(line.len() - n)],
+        None => &[],
+    }
+}