Merge lp:~mgunes/whatchanged/package-name-validation into lp:whatchanged

[Murat Gunes]

Merge after some testing - looks good

[Murat Gunes (mgunes)]

review: Approve

=== modified file 'whatchanged'
--- whatchanged	2010-10-30 01:34:56 +0000
+++ whatchanged	2010-10-30 03:02:39 +0000
@@ -37,7 +37,7 @@
 	SOURCE_PACKAGE_NAME=$(apt-cache madison ${PACKAGE_NAME} | grep Sources | tail -n 1 | awk '{print $1}')
 	INSTALLED_VERSION=$(apt-cache policy $PACKAGE_NAME | grep Installed: | cut -c 14-)
 	CANDIDATE_VERSION=$(apt-cache policy $PACKAGE_NAME | grep Candidate: | cut -c 14-)
-
+	VALIDATION_BOOL=$(dpkg -l $PACKAGE_NAME &> /dev/null)$?
 
 #	----------------------------------------------------------------
 #	----------------------------------------------------------------
@@ -166,6 +166,13 @@
 #	----------------------------------------------------------------
 #	----------------------------------------------------------------
 
+function validate_name
+#	Check whether this is a valid package name
+{
+	if [ "$VALIDATION_BOOL" = "1" ]; then
+		error_exit "${PACKAGE_NAME} is not a valid Ubuntu package. Exiting."
+	fi
+}
 
 function check_candidate
 {
@@ -214,6 +221,8 @@
 
 check_root
 
+validate_name
+
 # Trap TERM, HUP, and INT signals and properly exit
 
 trap "signal_exit TERM" TERM HUP
@@ -256,6 +265,7 @@
 # echo $PACKAGE_NAME
 # sleep 2000
 
+
 #	Exit
 
 proper_exit