Add feature registry.

1 files changed, 84 insertions, 0 deletions

diff --git a/src/feature.cc b/src/feature.cc
new file mode 100644
index 0000000..5beece1
--- /dev/null
+++ b/src/feature.cc
@@ -0,0 +1,84 @@
+#include <stdio.h>
+#include <iostream>
+#include <string>
+#include <map>
+
+#include "feature.h"
+
+/**
+ * Feature registration map for later lookup. This must be initialized
+ * before the static feature instances as those register with this map. 
+ */
+std::map<std::string, Feature *> Feature::feature_map;
+
+/*
+ * List of features, the names given here are used in both command line
+ * argument to enable the option and for saving the option value in GUI
+ * context.
+ */
+const Feature Feature::ExperimentalConcatFunction("concat");
+
+Feature::Feature(std::string name) : enabled_cmdline(false), enabled_options(false), name(name)
+{
+        feature_map[name] = this;
+}
+
+Feature::~Feature()
+{
+}
+
+const std::string& Feature::get_name() const
+{
+        return name;
+}
+    
+void Feature::set_enable_cmdline()
+{
+	enabled_cmdline = true;
+}
+
+void Feature::set_enable_options(bool status)
+{
+	enabled_options = status;
+}
+
+bool Feature::is_enabled() const
+{
+	if (enabled_cmdline) {
+	    return true;
+	}
+	return enabled_options;
+}
+    
+bool operator ==(const Feature& lhs, const Feature& rhs)
+{
+        return lhs.get_name() == rhs.get_name();
+}
+
+bool operator !=(const Feature& lhs, const Feature& rhs)
+{
+        return !(lhs == rhs);
+}
+    
+void Feature::enable_feature(std::string feature_name)
+{
+	map_t::iterator it = feature_map.find(feature_name);
+	if (it != feature_map.end()) {
+		(*it).second->set_enable_cmdline();
+	}
+}
+
+void Feature::enable_feature(std::string feature_name, bool status)
+{
+	map_t::iterator it = feature_map.find(feature_name);
+	if (it != feature_map.end()) {
+		(*it).second->set_enable_options(status);
+	}
+}
+
+void Feature::dump_features()
+{
+	for (map_t::iterator it = feature_map.begin(); it != feature_map.end(); it++) {
+		std::cout << "Feature('" << (*it).first << "') = " << ((*it).second->is_enabled() ? "enabled" : "disabled") << std::endl;
+	}
+}