From: Jonatan Schlag <jonatan.schlag@ipfire.org>
Date: Fri, 18 Aug 2017 11:45:18 +0000 (+0200)
Subject: util: add normalize function
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a8d8d2c515148e1ccc411ac4f3b3f039d748af6e;p=people%2Fstevee%2Fnetwork.git

util: add normalize function

This function remove all non alpha numerical characters from a string
and substitute this characters with one -

So HELLO%%/$&/)%$%(&&HH becomes hello-hh

Signed-off-by: Jonatan Schlag <jonatan.schlag@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/functions/functions.util b/src/functions/functions.util
index f096fbb7..dff0b907 100644
--- a/src/functions/functions.util
+++ b/src/functions/functions.util
@@ -850,3 +850,9 @@ copy() {
 		return ${EXIT_ERROR}
 	fi
 }
+
+normalize() {
+	local string="$@"
+
+	tr -sc [:alnum:] "-" < <(printf "%s" "${string,,}")
+}