From 079c006f1f8c76572b2c972ada9f45d465f642fc Mon Sep 17 00:00:00 2001
From: "Andrew C. Martin" <andrewcmartin@msn.com>
Date: Thu, 7 Mar 2013 20:23:14 -0700
Subject: [PATCH] error check argument passed into epgdump

---
 support/epgdump | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/support/epgdump b/support/epgdump
index 1c440db5..d0db4a30 100755
--- a/support/epgdump
+++ b/support/epgdump
@@ -15,7 +15,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 """
-Dump EPG in human readable format for analysis
+Dump Electronic Program Guide (EPG) in human readable format for analysis
 """
 
 # System libs
@@ -26,6 +26,12 @@ import pprint
 sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'lib', 'py'))
 import tvh.htsmsg as htsmsg
 
+if len(sys.argv) < 2:
+  sys.exit('Usage: %s epg-path' % sys.argv[0])
+
+if not os.path.exists(sys.argv[1]):
+  sys.exit('ERROR: epg "%s" was not found!' % sys.argv[1])
+
 # Open file
 fp = open(sys.argv[1], 'rb')
 for msg in htsmsg.deserialize(fp, True):