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+//
+// PropertyFileConfiguration.h
+//
+// Library: Util
+// Package: Configuration
+// Module:  PropertyFileConfiguration
+//
+// Definition of the PropertyFileConfiguration class.
+//
+// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#ifndef Util_PropertyFileConfiguration_INCLUDED
+#define Util_PropertyFileConfiguration_INCLUDED
+
+
+#include "Poco/Util/Util.h"
+#include "Poco/Util/MapConfiguration.h"
+#include <istream>
+#include <ostream>
+
+
+namespace Poco {
+namespace Util {
+
+
+class Util_API PropertyFileConfiguration: public MapConfiguration
+	/// This implementation of a Configuration reads properties
+	/// from a Java-style properties file.
+	///
+	/// The file syntax is implemented as follows.
+	///   - a line starting with a hash '#' or exclamation mark '!' is treated as a comment and ignored
+	///   - every other line denotes a property assignment in the form
+	///     <key> = <value> or
+	///     <key> : <value>
+	///
+	/// Keys and values may contain special characters represented by the following escape sequences:
+	///   - \t: tab (0x09)
+	///   - \n: line feed (0x0a)
+	///   - \r: carriage return (0x0d)
+	///   - \f: form feed (0x0c)
+	///
+	/// For every other sequence that starts with a backslash, the backslash is removed.
+	/// Therefore, the sequence \a would just yield an 'a'.
+	///
+	/// A value can spread across multiple lines if the last character in a line (the character
+	/// immediately before the carriage return or line feed character) is a single backslash.
+	///
+	/// Property names are case sensitive. Leading and trailing whitespace is
+	/// removed from both keys and values. A property name can neither contain
+	/// a colon ':' nor an equal sign '=' character.
+{
+public:
+	PropertyFileConfiguration();
+		/// Creates an empty PropertyFileConfiguration.
+
+	PropertyFileConfiguration(std::istream& istr);
+		/// Creates an PropertyFileConfiguration and loads the configuration data
+		/// from the given stream, which must be in properties file format.
+		
+	PropertyFileConfiguration(const std::string& path);
+		/// Creates an PropertyFileConfiguration and loads the configuration data
+		/// from the given file, which must be in properties file format.
+		
+	void load(std::istream& istr);
+		/// Loads the configuration data from the given stream, which 
+		/// must be in properties file format.
+		
+	void load(const std::string& path);
+		/// Loads the configuration data from the given file, which 
+		/// must be in properties file format.
+		
+	void save(std::ostream& ostr) const;
+		/// Writes the configuration data to the given stream.
+		///
+		/// The data is written as a sequence of statements in the form
+		/// <key>: <value>
+		/// separated by a newline character.
+
+	void save(const std::string& path) const;
+		/// Writes the configuration data to the given file.
+
+protected:
+	~PropertyFileConfiguration();
+	
+private:
+	void parseLine(std::istream& istr);
+	static int readChar(std::istream& istr);
+};
+
+
+} } // namespace Poco::Util
+
+
+#endif // Util_PropertyFileConfiguration_INCLUDED