Bool translator definition

libtoki/util/confignode.cpp

@@ -20,7 +20,6 @@ or FITNESS FOR A PARTICULAR PURPOSE.
 
 #include <libtoki/util/confignode.h>
 #include <libtoki/exception.h>
-#include <boost/foreach.hpp>
 #include <libtoki/parser/loose_ini_paser.h>
 
 #include <boost/algorithm/string.hpp>
@@ -29,6 +28,7 @@ or FITNESS FOR A PARTICULAR PURPOSE.
 #include <boost/property_tree/ini_parser.hpp>
 #include <boost/property_tree/xml_parser.hpp>
 #include <boost/property_tree/json_parser.hpp>
+#include <boost/optional.hpp>
 
 #include <iostream>
 
@@ -108,33 +108,32 @@ void write(const Node &c, const std::string &filename)
 	}
 }
 
-/** Boolean values translator **/
-class BoolTranslator {
-public:
-	typedef std::string	internal_type;
-	typedef bool		external_type;
-
-	boost::optional<external_type> get_value(internal_type const &v);
-	boost::optional<internal_type> put_value(external_type const &v);
-}
-
 boost::optional<BoolTranslator::external_type>
 BoolTranslator::get_value(BoolTranslator::internal_type const &v)
-{}
+{
+	std::string v_lower = boost::algorithm::to_lower_copy(v);
+	if( v_lower.compare("true") == 0 ||
+		v_lower.compare("yes") == 0 ||
+		v_lower.compare("on") == 0 ||
+		v_lower.compare("1") == 0 )
+			return true;
+	else if(v_lower.compare("false") == 0 ||
+			v_lower.compare("off") == 0 ||
+			v_lower.compare("no") == 0 ||
+			v_lower.compare("0") == 0 )
+			return false;
+	else
+			return boost::none;
+}
 
 boost::optional<BoolTranslator::internal_type>
-BoolTranslator::get_value(BoolTranslator::external_type const &v)
-{}
+BoolTranslator::put_value(BoolTranslator::external_type const &v)
+{
+	if(v)
+		return boost::optional<BoolTranslator::internal_type>("true");
+	else
+		return boost::optional<BoolTranslator::internal_type>("false");
+}
 
 } /* end ns Config */
 } /* end namespace Toki */
-
-// This will make boost use our translator
-// when retrieving boolean value all the time
-namespace boost { namespace property_tree {
-	template<>
-	struct translator_between<std::string, bool>
-	{
-		typedef BoolTranslator type;
-	};
-}}

libtoki/util/confignode.h

@@ -58,6 +58,33 @@ Node& merge_into(Node& accu, const Node& other);
  */
 void write(const Node& c, const std::string& filename);
 
+/**
+ * @brief Custom boolean values translator
+ *
+ * This translator convertes strings stored in boost::property_tree
+ * (default data struct for configuration) into boolean values when
+ * needed. It extends accepted strings to be one of @c true/false,
+ * @c yes/no, @c on/off, and @c 1/0 (like in default translator).
+ */
+class BoolTranslator {
+public:
+	typedef std::string	internal_type;
+	typedef bool		external_type;
+
+	boost::optional<external_type> get_value(internal_type const &v);
+	boost::optional<internal_type> put_value(external_type const &v);
+};
+
 } /* end ns Config */ } /* end ns Toki */
 
+// This will make boost use our translator
+// when retrieving boolean value all the time
+namespace boost { namespace property_tree {
+	template<>
+	struct translator_between<std::string, bool>
+	{
+		typedef Toki::Config::BoolTranslator type;
+	};
+}}
+
 #endif // LIBTOKI_CONFIGNODE_H