From 238ceb2df1b16cc1c34237b64b9223bae99933a9 Mon Sep 17 00:00:00 2001
From: Radek Szymczyszyn <radoslaw.szymczyszyn@erlang-solutions.com>
Date: Sat, 14 Oct 2017 22:37:19 -0400
Subject: Check OTP / docsh version compatibility

---
 kerl | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/kerl b/kerl
index 7964756..07452ef 100755
--- a/kerl
+++ b/kerl
@@ -1105,8 +1105,6 @@ ACTIVATE_CSH
 }
 
 install_docsh() {
-    # TODO: SHOULD check version compatibility
-
     REPO_URL=$DOCSH_GITHUB_URL
     GIT=$(echo -n $REPO_URL | $MD5SUM | cut -d ' ' -f $MD5SUM_FIELD)
     BUILDNAME=$1
@@ -1114,6 +1112,15 @@ install_docsh() {
     DOCSH_REF=kerl-install-docsh
     ACTIVE_PATH=$2
 
+    OTP_VERSION=$(get_otp_version $1)
+    # This has to be updated with docsh updates
+    DOCSH_SUPPORTED="^1[89]$"
+    echo $OTP_VERSION | grep "$DOCSH_SUPPORTED" > /dev/null 2>&1
+    if [ $? -ne 0 ]; then
+        echo "Erlang/OTP version $OTP_VERSION not supported by docsh (does not match regex $DOCSH_SUPPORTED)"
+        exit 1
+    fi
+
     mkdir -p "$KERL_GIT_DIR" || exit 1
     cd "$KERL_GIT_DIR" || exit 1
     echo "Checking out docsh git repository from ${REPO_URL}..."
-- 
cgit v1.2.3