From c878512a070de690ae92dcbf50b990cfc05651bf Mon Sep 17 00:00:00 2001
From: claustromaniac <20734810+claustromaniac@users.noreply.github.com>
Date: Sun, 18 Nov 2018 17:54:05 -0300
Subject: [PATCH] abort if neither curl nor wget are available

Additionally, hide the output of those checks.

fixes #537
---
 updater.sh | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/updater.sh b/updater.sh
index 6e69bbd..c66ff5e 100755
--- a/updater.sh
+++ b/updater.sh
@@ -16,9 +16,14 @@ DOWNLOAD_TO_STDOUT="curl -s"
 DOWNLOAD_TO_FILE="curl -O"
 
 # Use wget if curl is not available.
-if [[ -z $(command -v "curl") ]]; then
-  DOWNLOAD_TO_STDOUT="wget --quiet --output-document=-"
-  DOWNLOAD_TO_FILE="wget"
+if [[ -z $(command -v "curl") ]] > /dev/null 2>&1; then
+  if [[ $(command -v "wget") ]] > /dev/null 2>&1; then
+    DOWNLOAD_TO_STDOUT="wget --quiet --output-document=-"
+    DOWNLOAD_TO_FILE="wget"
+  else
+    echo -e "This script requires either curl or wget to be installed.\nProcess aborted"
+    exit 0
+  fi
 fi
 
 ## get the full path of this script (readlink for Linux, greadlink for Mac with coreutils installed)
@@ -112,11 +117,11 @@ else
   if [ $update_available = "no" ]; then
     main
   else
-    ## there is an update available 
+    ## there is an update available
     if [ $update_pref = "-update" ]; then
       ## update without asking
       update_script
-    else 
+    else
       read -p "There is a newer version of updater.sh available.  Download and execute?  Y/N? " -n 1 -r
       echo -e "\n\n"
       if [[ $REPLY =~ ^[Yy]$ ]]; then