date and boolean data types added

settings.cpp

@@ -0,0 +1,30 @@
+
+#include "settings.h"
+
+#include "ml_date.h"
+
+namespace usql {
+
+std::vector<std::pair<std::string, std::string>> Settings::m_settings =
+	    { std::make_pair("DATE_FORMAT", "%Y-%m-%d"),
+	      std::make_pair("BOOL_TRUE_LITERAL", "Y"),
+	      std::make_pair("BOOL_FALSE_LITERAL", "N") };
+
+
+long Settings::string_to_date(const std::string &datestr) {
+	return ::string_to_date(datestr, get_setting("DATE_FORMAT"));
+}
+
+
+std::string Settings::date_to_string(long date) {
+	return ::date_to_string(date, get_setting("DATE_FORMAT"));
+}
+
+std::basic_string<char> Settings::get_setting(const std::string &name) {
+	for(const auto& pair : m_settings) {
+		if (pair.first == name) return pair.second;
+	}
+	// TODO exception
+}
+
+}	//  namespace