From: Harald Hoyer <harald@redhat.com>
Date: Fri, 10 Jun 2016 12:31:52 +0000 (+0200)
Subject: base/dracut-lib.sh: add trim()
X-Git-Tag: 045~42
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2949dcba295336ff67be90f556d076d18ae6eae1;p=thirdparty%2Fdracut.git

base/dracut-lib.sh: add trim()

trim() to remove leading and trailing whitespace

(cherry picked from commit ac422d577c1de1e94620787380932b9ccbd7b10a)
---

diff --git a/modules.d/99base/dracut-lib.sh b/modules.d/99base/dracut-lib.sh
index f3929e2cf..05cbe91d9 100755
--- a/modules.d/99base/dracut-lib.sh
+++ b/modules.d/99base/dracut-lib.sh
@@ -51,6 +51,13 @@ str_ends() {
     [ "${1%*"$2"}" != "$1" ]
 }
 
+trim() {
+    local var="$*"
+    var="${var#"${var%%[![:space:]]*}"}"   # remove leading whitespace characters
+    var="${var%"${var##*[![:space:]]}"}"   # remove trailing whitespace characters
+    echo -n "$var"
+}
+
 if [ -z "$DRACUT_SYSTEMD" ]; then
 
     warn() {