| QxOrm 1.5.0 C++ Object Relational Mapping library

- Main Page
- Modules
- Namespaces
- Classes
- Files
- Directories

- File List
- File Members

archive_wide_traits.h
Go to the documentation of this file.

    00001 /****************************************************************************
    00002 **
    00003 ** https://www.qxorm.com/
    00004 ** Copyright (C) 2013 Lionel Marty (contact@qxorm.com)
    00005 **
    00006 ** This file is part of the QxOrm library
    00007 **
    00008 ** This software is provided 'as-is', without any express or implied
    00009 ** warranty. In no event will the authors be held liable for any
    00010 ** damages arising from the use of this software
    00011 **
    00012 ** Commercial Usage
    00013 ** Licensees holding valid commercial QxOrm licenses may use this file in
    00014 ** accordance with the commercial license agreement provided with the
    00015 ** Software or, alternatively, in accordance with the terms contained in
    00016 ** a written agreement between you and Lionel Marty
    00017 **
    00018 ** GNU General Public License Usage
    00019 ** Alternatively, this file may be used under the terms of the GNU
    00020 ** General Public License version 3.0 as published by the Free Software
    00021 ** Foundation and appearing in the file 'license.gpl3.txt' included in the
    00022 ** packaging of this file. Please review the following information to
    00023 ** ensure the GNU General Public License version 3.0 requirements will be
    00024 ** met : http://www.gnu.org/copyleft/gpl.html
    00025 **
    00026 ** If you are unsure which license is appropriate for your use, or
    00027 ** if you have questions regarding the use of this file, please contact :
    00028 ** contact@qxorm.com
    00029 **
    00030 ****************************************************************************/
    00031
    00032 #ifndef _QX_ARCHIVE_WIDE_TRAITS_H_
    00033 #define _QX_ARCHIVE_WIDE_TRAITS_H_
    00034
    00035 #ifdef _MSC_VER
    00036 #pragma once
    00037 #endif
    00038
    00046 #include <string>
    00047 #include <iostream>
    00048 #include <sstream>
    00049 #include <fstream>
    00050
    00051 #include <QtCore/qstring.h>
    00052
    00053 #include <QxSerialize/boost/QxSerializeInclude.h>
    00054
    00055 namespace qx {
    00056 namespace trait {
    00057
    00062 template <typename T> struct is_archive_wide { enum { value = false }; };
    00063
    00064 #if _QX_SERIALIZE_WIDE_BINARY
    00065 template <> struct is_archive_wide<boost::archive::binary_wiarchive> { enum { value = true }; };
    00066 template <> struct is_archive_wide<boost::archive::binary_woarchive> { enum { value = true }; };
    00067 #endif // _QX_SERIALIZE_WIDE_BINARY
    00068
    00069 #if _QX_SERIALIZE_WIDE_TEXT
    00070 template <> struct is_archive_wide<boost::archive::text_wiarchive>   { enum { value = true }; };
    00071 template <> struct is_archive_wide<boost::archive::text_woarchive>   { enum { value = true }; };
    00072 #endif // _QX_SERIALIZE_WIDE_TEXT
    00073
    00074 #if _QX_SERIALIZE_WIDE_XML
    00075 template <> struct is_archive_wide<boost::archive::xml_wiarchive>    { enum { value = true }; };
    00076 template <> struct is_archive_wide<boost::archive::xml_woarchive>    { enum { value = true }; };
    00077 #endif // _QX_SERIALIZE_WIDE_XML
    00078
    00079 template <typename T>
    00080 class archive_wide_traits
    00081 {
    00082
    00083 public:
    00084
    00085    enum { is_wide = qx::trait::is_archive_wide<T>::value };
    00086
    00087    typedef typename std::conditional<is_wide, wchar_t, char>::type type_char;
    00088    typedef typename std::conditional<is_wide, std::wstring, std::string>::type type_string;
    00089
    00090    typedef typename std::conditional<is_wide, std::wistream, std::istream>::type type_istream;
    00091    typedef typename std::conditional<is_wide, std::wostream, std::ostream>::type type_ostream;
    00092
    00093    typedef typename std::conditional<is_wide, std::wstringstream, std::stringstream>::type type_stringstream;
    00094    typedef typename std::conditional<is_wide, std::wistringstream, std::istringstream>::type type_istringstream;
    00095    typedef typename std::conditional<is_wide, std::wostringstream, std::ostringstream>::type type_ostringstream;
    00096
    00097    typedef typename std::conditional<is_wide, std::wfstream, std::fstream>::type type_fstream;
    00098    typedef typename std::conditional<is_wide, std::wifstream, std::ifstream>::type type_ifstream;
    00099    typedef typename std::conditional<is_wide, std::wofstream, std::ofstream>::type type_ofstream;
    00100
    00101    static inline QString toQString(const type_string & str)                   { return cvtQString<is_wide, 0>::toQString(str); }
    00102    static inline void fromQString(const QString & str, type_string & result)  { cvtQString<is_wide, 0>::fromQString(str, result); }
    00103
    00104    static inline QByteArray toQByteArray(const type_string & str, type_string * owner) { return cvtQByteArray<is_wide, 0>::toQByteArray(str, owner); }
    00105    static inline void fromQByteArray(const QByteArray & data, type_string & result)    { cvtQByteArray<is_wide, 0>::fromQByteArray(data, result); }
    00106
    00107 private:
    00108
    00109    template <bool isWide /* = false */, int dummy>
    00110    struct cvtQString
    00111    {
    00112 #ifndef QT_NO_STL
    00113       static inline QString toQString(const std::string & str)                   { return QString::fromStdString(str); }
    00114       static inline void fromQString(const QString & str, std::string & result)  { result = str.toStdString(); }
    00115 #else // QT_NO_STL
    00116       static inline QString toQString(const std::string & str)                   { return QString::fromLatin1(str.data(), int(str.size())); }
    00117       static inline void fromQString(const QString & str, std::string & result)  { result = str.toLatin1().constData(); }
    00118 #endif // QT_NO_STL
    00119    };
    00120
    00121    template <int dummy>
    00122    struct cvtQString<true, dummy>
    00123    {
    00124 #if ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR)))
    00125       static inline QString toQString(const std::wstring & str)                     { return QString::fromStdWString(str); }
    00126       static inline void fromQString(const QString & str, std::wstring & result)    { result = str.toStdWString(); }
    00127 #else // ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR)))
    00128       static inline QString toQString(const std::wstring & str)                     { Q_UNUSED(str); qAssert(false); /* Need STL compatibility ! */ return QString(); }
    00129       static inline void fromQString(const QString & str, std::wstring & result)    { Q_UNUSED(str); Q_UNUSED(result); qAssert(false); /* Need STL compatibility ! */ }
    00130 #endif // ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR)))
    00131    };
    00132
    00133    template <bool isWide /* = false */, int dummy>
    00134    struct cvtQByteArray
    00135    {
    00136       static inline QByteArray toQByteArray(const std::string & str, std::string * owner)
    00137       { if (owner) { (* owner) = str; }; return (owner ? QByteArray::fromRawData(owner->data(), owner->size()) : QByteArray(str.data(), str.size())); }
    00138       static inline void fromQByteArray(const QByteArray & data, std::string & result)
    00139       { result.clear(); result.append(data.constData(), data.size()); }
    00140    };
    00141
    00142    template <int dummy>
    00143    struct cvtQByteArray<true, dummy>
    00144    {
    00145       static inline QByteArray toQByteArray(const std::wstring & str, std::wstring * owner)
    00146 #if ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR)))
    00147       { Q_UNUSED(owner); return QString::fromStdWString(str).toUtf8(); }
    00148 #else // ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR)))
    00149       { Q_UNUSED(owner); Q_UNUSED(str); qAssert(false); /* Need STL compatibility ! */ return QByteArray(); }
    00150 #endif // ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR)))
    00151
    00152       static inline void fromQByteArray(const QByteArray & data, std::wstring & result)
    00153 #if ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR)))
    00154       { result = QString::fromUtf8(data.constData(), data.size()).toStdWString(); }
    00155 #else // ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR)))
    00156       { Q_UNUSED(data); Q_UNUSED(result); qAssert(false); /* Need STL compatibility ! */ }
    00157 #endif // ((! defined(QT_NO_STL)) && (! defined(QT_NO_STL_WCHAR)))
    00158    };
    00159
    00160 };
    00161
    00162 } // namespace trait
    00163 } // namespace qx
    00164
    00165 #endif // _QX_ARCHIVE_WIDE_TRAITS_H_