tools: nfdc face list command with filters
refs #3864
Change-Id: Ie22e506bb2aeae8abf7c94b394e7aa56c840266f
diff --git a/tools/nfdc/command-arguments.hpp b/tools/nfdc/command-arguments.hpp
index b3175d5..1bec816 100644
--- a/tools/nfdc/command-arguments.hpp
+++ b/tools/nfdc/command-arguments.hpp
@@ -53,6 +53,19 @@
auto i = find(key);
return i == end() ? defaultValue : boost::any_cast<T>(i->second);
}
+
+ /** \return the argument value, or nullopt if the argument is omitted on command line
+ */
+ template<typename T>
+ ndn::optional<T>
+ getOptional(const std::string& key) const
+ {
+ auto i = find(key);
+ if (i == end()) {
+ return ndn::nullopt;
+ }
+ return boost::any_cast<T>(i->second);
+ }
};
} // namespace nfdc