From ee31a9f8e2c5c42460f8cdcf32db57906a8bf02a Mon Sep 17 00:00:00 2001
From: Jason Streifling <jason@streifling.com>
Date: Fri, 23 Aug 2024 20:36:01 +0200
Subject: [PATCH] create check_dependency function

---
 update.sh | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/update.sh b/update.sh
index e973328..2436823 100755
--- a/update.sh
+++ b/update.sh
@@ -7,13 +7,20 @@ TAILWINDCSS_REPO_URL=https://api.github.com/repos/tailwindlabs/tailwindcss/relea
 TMP_DIR=/tmp
 BIN_DIR=/usr/local/bin
 
+check_dependency() {
+    if ! which $1 >/dev/null 2>&1; then
+        echo "$1 needs to be installed" >&2
+        exit 1
+    fi
+}
+
 ! groups | grep -E 'root|wheel|sudo' >/dev/null && echo "You need administrative privileges for this script" && exit 1
 
-! which curl >/dev/null 2>&1 && echo "curl needs to be installed" >&2 && exit 1
-! which go >/dev/null 2>&1 && echo "go needs to be installed" >&2 && exit 1
-! which jq >/dev/null 2>&1 && echo "jq needs to be installed" >&2 && exit 1
-! which tar >/dev/null 2>&1 && echo "tar needs to be installed" >&2 && exit 1
-! which xargs >/dev/null 2>&1 && echo "xargs needs to be installed" >&2 && exit 1
+check_dependency curl
+check_dependency go
+check_dependency jq
+check_dependency tar
+check_dependency xargs
 
 echo -e '\nDownloading cpolis...'
 rm -fr $CPOLIS_DIR/*