From: Matthias Kruk <m@m10k.eu>
Date: Wed, 24 Mar 2021 22:24:30 +0000 (+0900)
Subject: include/array: Add function for checking if an element is in an array
X-Git-Url: https://git.corax.cc/?a=commitdiff_plain;h=1b9ef1089ad599a98791baefa825c6f2b6925724;p=toolbox

include/array: Add function for checking if an element is in an array

Bash doesn't provide a simple way to check if an element is in an array.
This commit adds the array_contains convenience function to solve that
problem.
---

diff --git a/include/array.sh b/include/array.sh
new file mode 100644
index 0000000..2ff4b28
--- /dev/null
+++ b/include/array.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+
+__init() {
+	return 0
+}
+
+array_contains() {
+	local needle
+	local haystack
+
+	local cur
+
+	needle="$1"
+	haystack=("${@:2}")
+
+	for cur in "${haystack[@]}"; do
+		if [[ "$needle" == "$cur" ]]; then
+			return 0
+		fi
+	done
+
+	return 1
+}