From 9acaa0edd53c3b6b7f47584b68ee8f79d313d13f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Timo=20R=C3=B6hling?= <timo.roehling@fkie.fraunhofer.de>
Date: Mon, 2 Jan 2023 16:06:08 +0100
Subject: [PATCH] Check if rosdep view is empty before using it

See #109 for the corresponding discussion
---
 src/catkin_lint/environment.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/catkin_lint/environment.py b/src/catkin_lint/environment.py
index b233d77..fbd95ff 100644
--- a/src/catkin_lint/environment.py
+++ b/src/catkin_lint/environment.py
@@ -136,6 +136,8 @@ def __init__(self, os_env=None, use_rosdep=True, use_rosdistro=True, use_cache=T
             try:
                 gc.disable()
                 self.rosdep = get_rosdep(quiet=self.quiet)
+                if len(self.rosdep.view.keys()) == 0:
+                    raise Exception("empty view, please call 'rosdep update' first")
             except Exception as err:
                 if not self.quiet:
                     sys.stderr.write("catkin_lint: cannot load rosdep database: %s\n" % str(err))