From 7041157a0cf4a61e9b9f7e4b36dbfa5fc4633b5d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Ko=C4=87?= <daniel@xn--ko-wla.pl>
Date: Wed, 21 Sep 2016 19:41:08 +0200
Subject: [PATCH] Check the apps used in get-shapefiles.sh

---
 get-shapefiles.sh | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/get-shapefiles.sh b/get-shapefiles.sh
index da232de4d1..b6fe4cb206 100755
--- a/get-shapefiles.sh
+++ b/get-shapefiles.sh
@@ -3,6 +3,21 @@ set -e -u
 
 UNZIP_OPTS=-qqun
 
+# check essential applications
+exists()
+{
+  command -v "$1" >/dev/null 2>&1
+}
+
+for application in curl tar unzip; do
+  if exists $application; then
+    echo $application 'detected...'
+  else
+    echo 'ERROR:' $application 'not detected, you need to install it first!'
+    exit 1
+  fi
+done
+
 # create and populate data dir
 mkdir -p data/
 mkdir -p data/world_boundaries