add JSONFormatter

Foundation/include/Poco/JSONString.h

@@ -0,0 +1,48 @@
+//
+// JSONString.h
+//
+// $Id: //poco/1.4/Foundation/include/Poco/JSONString.h#1 $
+//
+// Library: Foundation
+// Package: Core
+// Module:  String
+//
+// JSONString utility functions.
+//
+// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#ifndef Foundation_JSONString_INCLUDED
+#define Foundation_JSONString_INCLUDED
+
+
+#include "Poco/Foundation.h"
+
+
+namespace Poco {
+
+
+std::string Foundation_API toJSON(char c);
+	/// Utility function for escaping JSON characters.
+
+
+void Foundation_API toJSON(const std::string& value, std::ostream& out, bool wrap = true);
+	/// Formats string value into the suplied output stream by 
+	/// escaping control characters.
+	/// If wrap is true, the resulting string is enclosed in double quotes
+
+
+std::string Foundation_API toJSON(const std::string& value, bool wrap = true);
+	/// Formats string value by escaping control characters.
+	/// If wrap is true, the resulting string is enclosed in double quotes
+	/// Returns formatted string.
+
+
+} // namespace Poco
+
+
+#endif // Foundation_JSONString_INCLUDED