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include/QxTraits/archive_wide_traits.h
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249
include/QxTraits/archive_wide_traits.h
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/****************************************************************************
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**
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** https://www.qxorm.com/
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** Copyright (C) 2013 XDL Team (ic-east.com)
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**
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** This file is part of the QxOrm library
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**
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** This software is provided 'as-is', without any express or implied
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** warranty. In no event will the authors be held liable for any
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** damages arising from the use of this software
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**
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** Commercial Usage
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** Licensees holding valid commercial QxOrm licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and XDL Team
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file 'license.gpl3.txt' included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met : http://www.gnu.org/copyleft/gpl.html
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**
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** If you are unsure which license is appropriate for your use, or
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** if you have questions regarding the use of this file, please contact :
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** ic-east.com
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**
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****************************************************************************/
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#ifndef _QX_ARCHIVE_WIDE_TRAITS_H_
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#define _QX_ARCHIVE_WIDE_TRAITS_H_
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#ifdef _MSC_VER
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#pragma once
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#endif
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/*!
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* \file archive_wide_traits.h
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* \author XDL Team
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* \ingroup QxTraits
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* \brief qx::trait::is_archive_wide<T>::value : define if a boost::archive type uses wide string character and stream (for example std::wstring) or not (for example std::string)
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*/
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#include <string>
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#include <iostream>
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#include <sstream>
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#include <fstream>
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#include <QtCore/qstring.h>
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#include <QxSerialize/boost/QxSerializeInclude.h>
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namespace qx
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{
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namespace trait
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{
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/*!
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* \ingroup QxTraits
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* \brief qx::trait::is_archive_wide<T>::value : define if a boost::archive type uses wide string character and stream (for example std::wstring) or not (for example std::string)
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*/
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template <typename T>
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struct is_archive_wide
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{
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enum
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{
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value = false
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};
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};
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#if _QX_SERIALIZE_WIDE_BINARY
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template <>
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struct is_archive_wide<boost::archive::binary_wiarchive>
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{
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enum
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{
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value = true
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};
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};
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template <>
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struct is_archive_wide<boost::archive::binary_woarchive>
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{
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enum
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{
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value = true
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};
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};
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#endif // _QX_SERIALIZE_WIDE_BINARY
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#if _QX_SERIALIZE_WIDE_TEXT
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template <>
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struct is_archive_wide<boost::archive::text_wiarchive>
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{
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enum
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{
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value = true
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};
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};
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template <>
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struct is_archive_wide<boost::archive::text_woarchive>
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{
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enum
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{
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value = true
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};
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};
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#endif // _QX_SERIALIZE_WIDE_TEXT
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#if _QX_SERIALIZE_WIDE_XML
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template <>
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struct is_archive_wide<boost::archive::xml_wiarchive>
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{
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enum
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{
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value = true
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};
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};
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template <>
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struct is_archive_wide<boost::archive::xml_woarchive>
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{
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enum
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{
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value = true
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};
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};
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#endif // _QX_SERIALIZE_WIDE_XML
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template <typename T>
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class archive_wide_traits
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{
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public:
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enum
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{
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is_wide = qx::trait::is_archive_wide<T>::value
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};
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typedef typename std::conditional<is_wide, wchar_t, char>::type type_char;
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typedef typename std::conditional<is_wide, std::wstring, std::string>::type type_string;
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typedef typename std::conditional<is_wide, std::wistream, std::istream>::type type_istream;
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typedef typename std::conditional<is_wide, std::wostream, std::ostream>::type type_ostream;
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typedef typename std::conditional<is_wide, std::wstringstream, std::stringstream>::type type_stringstream;
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typedef typename std::conditional<is_wide, std::wistringstream, std::istringstream>::type type_istringstream;
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typedef typename std::conditional<is_wide, std::wostringstream, std::ostringstream>::type type_ostringstream;
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typedef typename std::conditional<is_wide, std::wfstream, std::fstream>::type type_fstream;
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typedef typename std::conditional<is_wide, std::wifstream, std::ifstream>::type type_ifstream;
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typedef typename std::conditional<is_wide, std::wofstream, std::ofstream>::type type_ofstream;
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static inline QString toQString(const type_string &str) { return cvtQString<is_wide, 0>::toQString(str); }
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static inline void fromQString(const QString &str, type_string &result) { cvtQString<is_wide, 0>::fromQString(str, result); }
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static inline QByteArray toQByteArray(const type_string &str, type_string *owner) { return cvtQByteArray<is_wide, 0>::toQByteArray(str, owner); }
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static inline void fromQByteArray(const QByteArray &data, type_string &result) { cvtQByteArray<is_wide, 0>::fromQByteArray(data, result); }
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private:
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template <bool isWide /* = false */, int dummy>
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struct cvtQString
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{
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#ifndef QT_NO_STL
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static inline QString toQString(const std::string &str) { return QString::fromStdString(str); }
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static inline void fromQString(const QString &str, std::string &result) { result = str.toStdString(); }
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#else // QT_NO_STL
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static inline QString toQString(const std::string &str) { return QString::fromLatin1(str.data(), int(str.size())); }
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static inline void fromQString(const QString &str, std::string &result) { result = str.toLatin1().constData(); }
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#endif // QT_NO_STL
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};
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template <int dummy>
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struct cvtQString<true, dummy>
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{
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#if ((!defined(QT_NO_STL)) && (!defined(QT_NO_STL_WCHAR)))
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static inline QString toQString(const std::wstring &str) { return QString::fromStdWString(str); }
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static inline void fromQString(const QString &str, std::wstring &result) { result = str.toStdWString(); }
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#else // ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR)))
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static inline QString toQString(const std::wstring &str)
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{
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Q_UNUSED(str);
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qAssert(false); /* Need STL compatibility ! */
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return QString();
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}
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static inline void fromQString(const QString &str, std::wstring &result)
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{
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Q_UNUSED(str);
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Q_UNUSED(result);
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qAssert(false); /* Need STL compatibility ! */
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}
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#endif // ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR)))
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};
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template <bool isWide /* = false */, int dummy>
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struct cvtQByteArray
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{
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static inline QByteArray toQByteArray(const std::string &str, std::string *owner)
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{
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if (owner)
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{
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(*owner) = str;
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};
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return (owner ? QByteArray::fromRawData(owner->data(), owner->size()) : QByteArray(str.data(), str.size()));
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}
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static inline void fromQByteArray(const QByteArray &data, std::string &result)
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{
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result.clear();
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result.append(data.constData(), data.size());
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}
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};
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template <int dummy>
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struct cvtQByteArray<true, dummy>
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{
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static inline QByteArray toQByteArray(const std::wstring &str, std::wstring *owner)
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#if ((!defined(QT_NO_STL)) && (!defined(QT_NO_STL_WCHAR)))
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{
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Q_UNUSED(owner);
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return QString::fromStdWString(str).toUtf8();
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}
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#else // ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR)))
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{
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Q_UNUSED(owner);
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Q_UNUSED(str);
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qAssert(false); /* Need STL compatibility ! */
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return QByteArray();
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}
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#endif // ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR)))
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static inline void fromQByteArray(const QByteArray &data, std::wstring &result)
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#if ((!defined(QT_NO_STL)) && (!defined(QT_NO_STL_WCHAR)))
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{
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result = QString::fromUtf8(data.constData(), data.size()).toStdWString();
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}
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#else // ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR)))
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{
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Q_UNUSED(data);
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Q_UNUSED(result);
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qAssert(false); /* Need STL compatibility ! */
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}
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#endif // ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR)))
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};
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};
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} // namespace trait
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} // namespace qx
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#endif // _QX_ARCHIVE_WIDE_TRAITS_H_
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