init repo

ActiveX/Common/ASCDocxFormat/Source/Utility/codecvt.h

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+/*
+ * (c) Copyright Ascensio System SIA 2010-2014
+ *
+ * This program is a free software product. You can redistribute it and/or 
+ * modify it under the terms of the GNU Affero General Public License (AGPL) 
+ * version 3 as published by the Free Software Foundation. In accordance with 
+ * Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect 
+ * that Ascensio System SIA expressly excludes the warranty of non-infringement
+ * of any third-party rights.
+ *
+ * This program is distributed WITHOUT ANY WARRANTY; without even the implied 
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR  PURPOSE. For 
+ * details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
+ *
+ * You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia,
+ * EU, LV-1021.
+ *
+ * The  interactive user interfaces in modified source and object code versions
+ * of the Program must display Appropriate Legal Notices, as required under 
+ * Section 5 of the GNU AGPL version 3.
+ *
+ * Pursuant to Section 7(b) of the License you must retain the original Product
+ * logo when distributing the program. Pursuant to Section 7(e) we decline to
+ * grant you any rights under trademark law for use of our trademarks.
+ *
+ * All the Product's GUI elements, including illustrations and icon sets, as
+ * well as technical writing content are licensed under the terms of the
+ * Creative Commons Attribution-ShareAlike 4.0 International. See the License
+ * terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
+ *
+ */
+ #pragma once
+#ifndef UTILITY_CODECVT_INCLUDE_H_
+#define UTILITY_CODECVT_INCLUDE_H_
+
+
+#include <locale>
+
+
+
+class ucs2_conversion : public std::codecvt<wchar_t, char, std::mbstate_t>
+{
+protected:
+	result do_in(std::mbstate_t& state,
+				 const char* from, const char* from_end, const char*& from_next,
+				 wchar_t* to, wchar_t* to_limit, wchar_t*& to_next) const;
+
+	result do_out(std::mbstate_t& state,
+				  const wchar_t* from, const wchar_t* from_end, const wchar_t*& from_next,
+				  char* to, char* to_limit, char*& to_next) const;
+
+	bool do_always_noconv() const throw() { return false; }
+	int  do_encoding() const throw() { return 2; }
+};
+
+
+class ube_conversion : public std::codecvt<wchar_t, char, std::mbstate_t>
+{
+protected:
+	result do_in(std::mbstate_t& state,
+				 const char* from, const char* from_end, const char*& from_next,
+				 wchar_t* to, wchar_t* to_limit, wchar_t*& to_next) const;
+
+	result do_out(std::mbstate_t& state,
+				  const wchar_t* from, const wchar_t* from_end, const wchar_t*& from_next,
+				  char* to, char* to_limit, char*& to_next) const;
+
+	bool do_always_noconv() const throw() { return false; }
+	int  do_encoding() const throw() { return 2; }
+};
+
+
+
+class utf8_conversion : public std::codecvt<wchar_t, char, std::mbstate_t>
+{
+protected:
+	result do_in(std::mbstate_t& state,
+				 const char* from, const char* from_end, const char*& from_next,
+				 wchar_t* to, wchar_t* to_limit, wchar_t*& to_next) const;
+
+	result in(std::mbstate_t& state,
+				 const char* from, const char* from_end, const char*& from_next,
+				 wchar_t* to, wchar_t* to_limit, wchar_t*& to_next) const;
+
+	result do_out(std::mbstate_t& state,
+				  const wchar_t* from, const wchar_t* from_end, const wchar_t*& from_next,
+				  char* to, char* to_limit, char*& to_next) const;
+
+	result out(std::mbstate_t& state,
+				  const wchar_t* from, const wchar_t* from_end, const wchar_t*& from_next,
+				  char* to, char* to_limit, char*& to_next) const;
+
+	bool do_always_noconv() const throw() { return false; }
+	int  do_encoding() const throw() { return 2; }
+
+private:
+	const unsigned char take_6_bits(const unsigned int value, const size_t right_position) const;
+	const size_t most_signifant_bit_position(const unsigned int value) const;
+};
+
+#endif // UTILITY_CODECVT_INCLUDE_H_