added method & tests to the class NumberFormatter for bool values

Foundation/src/NumberFormatter.cpp

@@ -16,14 +16,14 @@
 // execute, and transmit the Software, and to prepare derivative works of the
 // Software, and to permit third-parties to whom the Software is furnished to
 // do so, all subject to the following:
-// 
+//
 // The copyright notices in the Software and this entire statement, including
 // the above license grant, this restriction and the following disclaimer,
 // must be included in all copies of the Software, in whole or in part, and
 // all derivative works of the Software, unless such copies or derivative
 // works are solely in the form of machine-executable object code generated by
 // a source language processor.
-// 
+//
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 // FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
@@ -41,7 +41,7 @@
 
 #if defined(_MSC_VER)
 	#define I64_FMT "I64"
-#elif defined(__APPLE__) 
+#elif defined(__APPLE__)
 	#define I64_FMT "q"
 #else
 	#define I64_FMT "ll"
@@ -51,6 +51,27 @@
 namespace Poco {
 
 
+std::string NumberFormatter::format(bool value, BoolFormat format)
+{
+	switch(format)
+	{
+		default:
+		case FMT_TRUE_FALSE:
+			if (value == true)
+				return "true";
+			return "false";
+		case FMT_YES_NO:
+			if (value == true)
+				return "yes";
+			return "no";
+		case FMT_ON_OFF:
+			if (value == true)
+				return "on";
+			return "off";
+	}
+}
+
+
 void NumberFormatter::append(std::string& str, int value)
 {
 	char buffer[64];