Add back some basic help output

3 files changed, 18 insertions, 1 deletions

diff --git a/project2/common/options.cpp b/project2/common/options.cpp
index b2777fa..37b3f06 100644
--- a/project2/common/options.cpp
+++ b/project2/common/options.cpp
@@ -115,6 +115,12 @@ Options::consume(const Glib::ustring & n, const Glib::ustring & p, const Variabl
 	}
 }
 
+const Options::OptionList &
+Options::allOptions() const
+{
+	return options;
+}
+
 const Options::Option *
 Options::find(const Glib::ustring & n) const {
 	BOOST_FOREACH(const OptionPtr & o, options) {
diff --git a/project2/common/options.h b/project2/common/options.h
index b336854..8a2584c 100644
--- a/project2/common/options.h
+++ b/project2/common/options.h
@@ -48,6 +48,7 @@ class Options {
 				virtual void consume(const Glib::ustring & name, const Glib::ustring & platform, const VariableType & value) const = 0;
 		};
 		typedef boost::intrusive_ptr<Option> OptionPtr;
+		typedef std::list<OptionPtr> OptionList;
 
 		Options(const Glib::ustring & name);
 
@@ -89,9 +90,9 @@ class Options {
 		const Option * find(const Glib::ustring & name) const;
 
 		const Glib::ustring name;
+		const OptionList & allOptions() const;
 
 	private:
-		typedef std::list<OptionPtr> OptionList;
 		OptionList options;
 };
 
diff --git a/project2/console/consoleEnvironment.cpp b/project2/console/consoleEnvironment.cpp
index 28da574..6bbeeed 100644
--- a/project2/console/consoleEnvironment.cpp
+++ b/project2/console/consoleEnvironment.cpp
@@ -25,8 +25,18 @@ class ShowHelpTrigger : public Options::Target {
 		}
 		void consume(const Glib::ustring &, const VariableType &) const {
 			fprintf(stdout, "Help\n");
+			LoaderBase::onAllComponents(boost::bind(&ShowHelpTrigger::outputOptions, this, _1));
 			exit(1);
 		}
+	private:
+		void outputOptions(ComponentLoader * cl) const {
+			const Options * options = cl->options();
+			if (!options) return;
+			fprintf(stdout, "  * %s\n", options->name.c_str());
+			BOOST_FOREACH(const auto & option, options->allOptions()) {
+				fprintf(stdout, "    * %s - %s\n", option->name().c_str(), option->description().c_str());
+			}
+		}
 };
 
 ConsoleEnvironment::ConsoleEnvironment(int c, char ** v) :