From 6a7c9602d4de61a9fbbb64001e5e4b3bd4609686 Mon Sep 17 00:00:00 2001
From: Asif Bacchus <asif@bacchus.cloud>
Date: Sat, 28 Nov 2020 04:14:22 -0700
Subject: [PATCH] add modifed integer test function

---
 entrypoint.sh | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/entrypoint.sh b/entrypoint.sh
index cd72636..f83c0f5 100755
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -7,6 +7,16 @@ convertCase () {
     printf "%s" "$1" | tr "[:lower:]" "[:upper:]"
 }
 
+isInt () {
+    if ! [ "$1" -eq "$1" ] 2>/dev/null; then
+        # not a valid integer, return -1
+        echo -1
+    else
+        # valid integer, return it
+        echo "$1"
+    fi
+}
+
 # instantiate variables
 sqlCmd='/tmp/cmd.sql'