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// 
// TextConverter.h 
// 
// Library: Foundation 
// Package: Text 
// Module:  TextConverter 
// 
// Definition of the TextConverter class. 
// 
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH. 
// and Contributors. 
// 
// SPDX-License-Identifier:	BSL-1.0 
// 
 
 
#ifndef Foundation_TextConverter_INCLUDED 
#define Foundation_TextConverter_INCLUDED 
 
 
#include "Poco/Foundation.h" 
 
 
namespace Poco { 
 
 
class TextEncoding; 
 
 
class Foundation_API TextConverter 
	/// A TextConverter converts strings from one encoding 
	/// into another. 
{ 
public: 
	typedef int (*Transform)(int); 
		/// Transform function for convert. 
		 
	TextConverter(const TextEncoding& inEncoding, const TextEncoding& outEncoding, int defaultChar = '?'); 
		/// Creates the TextConverter. The encoding objects must not be deleted while the 
		/// TextConverter is in use. 
 
	~TextConverter(); 
		/// Destroys the TextConverter. 
		 
	int convert(const std::string& source, std::string& destination, Transform trans); 
		/// Converts the source string from inEncoding to outEncoding 
		/// and appends the result to destination. Every character is 
		/// passed to the transform function. 
		/// If a character cannot be represented in outEncoding, defaultChar 
		/// is used instead. 
		/// Returns the number of encoding errors (invalid byte sequences 
		/// in source). 
 
	int convert(const void* source, int length, std::string& destination, Transform trans); 
		/// Converts the source buffer from inEncoding to outEncoding 
		/// and appends the result to destination. Every character is 
		/// passed to the transform function. 
		/// If a character cannot be represented in outEncoding, defaultChar 
		/// is used instead. 
		/// Returns the number of encoding errors (invalid byte sequences 
		/// in source). 
 
	int convert(const std::string& source, std::string& destination); 
		/// Converts the source string from inEncoding to outEncoding 
		/// and appends the result to destination. 
		/// If a character cannot be represented in outEncoding, defaultChar 
		/// is used instead. 
		/// Returns the number of encoding errors (invalid byte sequences 
		/// in source). 
 
	int convert(const void* source, int length, std::string& destination); 
		/// Converts the source buffer from inEncoding to outEncoding 
		/// and appends the result to destination. 
		/// If a character cannot be represented in outEncoding, defaultChar 
		/// is used instead. 
		/// Returns the number of encoding errors (invalid byte sequences 
		/// in source). 
 
private: 
	TextConverter(); 
	TextConverter(const TextConverter&); 
	TextConverter& operator = (const TextConverter&); 
 
	const TextEncoding& _inEncoding; 
	const TextEncoding& _outEncoding; 
	int                 _defaultChar; 
}; 
 
 
} // namespace Poco 
 
 
#endif // Foundation_TextConverter_INCLUDED