+# by ddzeko, Mon, 21 Mar 2005 13:35:42 +0100
+cp_yes_no () {
+ [ "$CP_SCRIPT_DEBUG" ] && set -vx
+ local prompt answer
+ prompt="$1"
+ [ "$prompt" ] || prompt="Are you sure?"
+ RET=""
+
+ # check to prevent user from using this when debconf is active
+ # (it would break communication with its backend - uses stdin/out)
+ if [ "$DEBCONF_REDIR" ]; then
+ echo "cp_yes_no: debconf redirection detected" >&2
+ return 1
+ fi
+
+ echo -n "$prompt (y)es/(n)o: "
+ read answer
+ case "$answer" in
+ y*)
+ echo
+ RET=y
+ ;;
+ n*)
+ echo
+ RET=n
+ ;;
+ *)
+ echo
+ echo "Please read the message and choose y or n"
+ cp_yes_no
+ ;;
+ esac
+}
+
+# by ddzeko, Tue, 29 Mar 2005 17:37:52 +0200
+#
+# db_get seems to return error messages if the requested variable
+# is not found - we do not find that desirable, and checking $? with
+# set -e turned on seems to be a bit of a problem
+# --> that's why we wrap the db_get call to return unset RET variable
+# instead of some gibberish error message that our script does
+# not expect
+cp_db_get() {
+ local var
+ var="$1"
+
+ # check to prevent user from using this before activating debconf
+ # confmodule needs to be loaded before accessing db_* functions
+ if [ -z "$DEBCONF_REDIR" ]; then
+ echo "cp_db_get: debconf not activated!" >&2
+ return 1
+ fi
+
+ if ! db_get "$var"; then
+ case "$RET" in
+ *doesn\'t\ exist)
+ RET=""
+ ;;
+ [0-9][0-9]\ ?*) # other errors
+ RET=""
+ ;;
+ esac
+ fi
+}
+