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//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2009 Laurent Gomila (laurent.gom@gmail.com)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
// you must not claim that you wrote the original software.
// If you use this software in a product, an acknowledgment
// in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
// and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
////////////////////////////////////////////////////////////
#ifndef SFML_UNICODE_HPP
#define SFML_UNICODE_HPP
////////////////////////////////////////////////////////////
// Headers
////////////////////////////////////////////////////////////
#include <SFML/Config.hpp>
#include <iterator>
#include <locale>
#include <string>
#include <stdlib.h>
namespace sf
{
////////////////////////////////////////////////////////////
/// Provides utility functions to convert from and to
/// any unicode and ASCII encoding
////////////////////////////////////////////////////////////
class SFML_API Unicode
{
public :
////////////////////////////////////////////////////////////
/// Define a string type for each encoding
/// Warning : in UTF8 and UTF16 strings, one element doesn't
/// necessarily maps to one character ; only an UTF32 element
/// is wide enough to hold all possible unicode values
////////////////////////////////////////////////////////////
typedef std::basic_string<Uint8> UTF8String;
typedef std::basic_string<Uint16> UTF16String;
typedef std::basic_string<Uint32> UTF32String;
////////////////////////////////////////////////////////////
/// This class is an abstract definition of a unicode text,
/// it can be converted from and to any kind of string
/// and encoding
////////////////////////////////////////////////////////////
class SFML_API Text
{
public :
////////////////////////////////////////////////////////////
/// Default constructor (empty text)
///
////////////////////////////////////////////////////////////
Text();
////////////////////////////////////////////////////////////
/// Construct the unicode text from any type of string
///
/// \param Str : String to convert
///
////////////////////////////////////////////////////////////
Text(const char* Str);
Text(const wchar_t* Str);
Text(const Uint8* Str);
Text(const Uint16* Str);
Text(const Uint32* Str);
Text(const std::string& Str);
Text(const std::wstring& Str);
Text(const Unicode::UTF8String& Str);
Text(const Unicode::UTF16String& Str);
Text(const Unicode::UTF32String& Str);
////////////////////////////////////////////////////////////
/// Operator to cast the text to any type of string
///
/// \return Converted string
///
////////////////////////////////////////////////////////////
operator std::string () const;
operator std::wstring () const;
operator Unicode::UTF8String () const;
operator Unicode::UTF16String () const;
operator const Unicode::UTF32String&() const;
private :
////////////////////////////////////////////////////////////
// Data member
////////////////////////////////////////////////////////////
sf::Unicode::UTF32String myUTF32String; ///< UTF-32 unicode text
};
////////////////////////////////////////////////////////////
/// Generic function to convert an UTF-32 characters range
/// to an ANSI characters range, using the given locale
///
/// \param Begin : Iterator pointing to the beginning of the input sequence
/// \param End : Iterator pointing to the end of the input sequence
/// \param Output : Iterator pointing to the beginning of the output sequence
/// \param Replacement : Replacement character for characters not convertible to output encoding ('?' by default -- use 0 to use no replacement character)
/// \param Locale : Locale to use for conversion (uses the current one by default)
///
/// \return Iterator to the end of the output sequence which has been written
///
////////////////////////////////////////////////////////////
template <typename In, typename Out>
static Out UTF32ToANSI(In Begin, In End, Out Output, char Replacement = '?', const std::locale& Locale = GetDefaultLocale());
////////////////////////////////////////////////////////////
/// Generic function to convert an ANSI characters range
/// to an UTF-32 characters range, using the given locale
///
/// \param Begin : Iterator pointing to the beginning of the input sequence
/// \param End : Iterator pointing to the end of the input sequence
/// \param Output : Iterator pointing to the beginning of the output sequence
/// \param Locale : Locale to use for conversion (uses the current one by default)
///
/// \return Iterator to the end of the output sequence which has been written
///
////////////////////////////////////////////////////////////
template <typename In, typename Out>
static Out ANSIToUTF32(In Begin, In End, Out Output, const std::locale& Locale = GetDefaultLocale());
////////////////////////////////////////////////////////////
/// Generic function to convert an UTF-8 characters range
/// to an UTF-16 characters range, using the given locale
///
/// \param Begin : Iterator pointing to the beginning of the input sequence
/// \param End : Iterator pointing to the end of the input sequence
/// \param Output : Iterator pointing to the beginning of the output sequence
/// \param Replacement : Replacement character for characters not convertible to output encoding ('?' by default -- use 0 to use no replacement character)
///
/// \return Iterator to the end of the output sequence which has been written
///
////////////////////////////////////////////////////////////
template <typename In, typename Out>
static Out UTF8ToUTF16(In Begin, In End, Out Output, Uint16 Replacement = '?');
////////////////////////////////////////////////////////////
/// Generic function to convert an UTF-8 characters range
/// to an UTF-32 characters range, using the given locale
///
/// \param Begin : Iterator pointing to the beginning of the input sequence
/// \param End : Iterator pointing to the end of the input sequence
/// \param Output : Iterator pointing to the beginning of the output sequence
/// \param Replacement : Replacement character for characters not convertible to output encoding ('?' by default -- use 0 to use no replacement character)
///
/// \return Iterator to the end of the output sequence which has been written
///
////////////////////////////////////////////////////////////
template <typename In, typename Out>
static Out UTF8ToUTF32(In Begin, In End, Out Output, Uint32 Replacement = '?');
////////////////////////////////////////////////////////////
/// Generic function to convert an UTF-16 characters range
/// to an UTF-8 characters range, using the given locale
///
/// \param Begin : Iterator pointing to the beginning of the input sequence
/// \param End : Iterator pointing to the end of the input sequence
/// \param Output : Iterator pointing to the beginning of the output sequence
/// \param Replacement : Replacement character for characters not convertible to output encoding ('?' by default -- use 0 to use no replacement character)
///
/// \return Iterator to the end of the output sequence which has been written
///
////////////////////////////////////////////////////////////
template <typename In, typename Out>
static Out UTF16ToUTF8(In Begin, In End, Out Output, Uint8 Replacement = '?');
////////////////////////////////////////////////////////////
/// Generic function to convert an UTF-16 characters range
/// to an UTF-32 characters range, using the given locale
///
/// \param Begin : Iterator pointing to the beginning of the input sequence
/// \param End : Iterator pointing to the end of the input sequence
/// \param Output : Iterator pointing to the beginning of the output sequence
/// \param Replacement : Replacement character for characters not convertible to output encoding ('?' by default -- use 0 to use no replacement character)
///
/// \return Iterator to the end of the output sequence which has been written
///
////////////////////////////////////////////////////////////
template <typename In, typename Out>
static Out UTF16ToUTF32(In Begin, In End, Out Output, Uint32 Replacement = '?');
////////////////////////////////////////////////////////////
/// Generic function to convert an UTF-32 characters range
/// to an UTF-8 characters range, using the given locale
///
/// \param Begin : Iterator pointing to the beginning of the input sequence
/// \param End : Iterator pointing to the end of the input sequence
/// \param Output : Iterator pointing to the beginning of the output sequence
/// \param Replacement : Replacement character for characters not convertible to output encoding ('?' by default -- use 0 to use no replacement character)
///
/// \return Iterator to the end of the output sequence which has been written
///
////////////////////////////////////////////////////////////
template <typename In, typename Out>
static Out UTF32ToUTF8(In Begin, In End, Out Output, Uint8 Replacement = '?');
////////////////////////////////////////////////////////////
/// Generic function to convert an UTF-32 characters range
/// to an UTF-16 characters range, using the given locale
///
/// \param Begin : Iterator pointing to the beginning of the input sequence
/// \param End : Iterator pointing to the end of the input sequence
/// \param Output : Iterator pointing to the beginning of the output sequence
/// \param Replacement : Replacement character for characters not convertible to output encoding ('?' by default -- use 0 to use no replacement character)
///
/// \return Iterator to the end of the output sequence which has been written
///
////////////////////////////////////////////////////////////
template <typename In, typename Out>
static Out UTF32ToUTF16(In Begin, In End, Out Output, Uint16 Replacement = '?');
////////////////////////////////////////////////////////////
/// Get the number of characters composing an UTF-8 string
///
/// \param Begin : Iterator pointing to the beginning of the input sequence
/// \param End : Iterator pointing to the end of the input sequence
///
/// \return Count of the characters in the string
///
////////////////////////////////////////////////////////////
template <typename In>
static std::size_t GetUTF8Length(In Begin, In End);
////////////////////////////////////////////////////////////
/// Get the number of characters composing an UTF-16 string
///
/// \param Begin : Iterator pointing to the beginning of the input sequence
/// \param End : Iterator pointing to the end of the input sequence
///
/// \return Count of the characters in the string
///
////////////////////////////////////////////////////////////
template <typename In>
static std::size_t GetUTF16Length(In Begin, In End);
////////////////////////////////////////////////////////////
/// Get the number of characters composing an UTF-32 string
///
/// \param Begin : Iterator pointing to the beginning of the input sequence
/// \param End : Iterator pointing to the end of the input sequence
///
/// \return Count of the characters in the string
///
////////////////////////////////////////////////////////////
template <typename In>
static std::size_t GetUTF32Length(In Begin, In End);
private :
////////////////////////////////////////////////////////////
/// Get the default system locale
///
/// \return Reference to the default system locale
///
////////////////////////////////////////////////////////////
static const std::locale& GetDefaultLocale();
////////////////////////////////////////////////////////////
// Static member data
////////////////////////////////////////////////////////////
static const int UTF8TrailingBytes[256]; ///< Lookup table to find the length of an UTF-8 sequence
static const Uint32 UTF8Offsets[6]; ///< Magic values to subtract during UTF-8 conversions
static const Uint8 UTF8FirstBytes[7]; ///< First bytes for UTF-8 sequences
};
#include <SFML/System/Unicode.inl>
} // namespace sf
#endif // SFML_UNICODE_HPP
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