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QxOrm 1.1.6
C++ Object Relational Mapping library
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00001 /**************************************************************************** 00002 ** 00003 ** http://www.qxorm.com/ 00004 ** http://sourceforge.net/projects/qxorm/ 00005 ** Original file by Lionel Marty 00006 ** 00007 ** This file is part of the QxOrm library 00008 ** 00009 ** This software is provided 'as-is', without any express or implied 00010 ** warranty. In no event will the authors be held liable for any 00011 ** damages arising from the use of this software. 00012 ** 00013 ** GNU Lesser General Public License Usage 00014 ** This file must be used under the terms of the GNU Lesser 00015 ** General Public License version 2.1 as published by the Free Software 00016 ** Foundation and appearing in the file 'license.lgpl.txt' included in the 00017 ** packaging of this file. Please review the following information to 00018 ** ensure the GNU Lesser General Public License version 2.1 requirements 00019 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. 00020 ** 00021 ** If you have questions regarding the use of this file, please contact : 00022 ** contact@qxorm.com 00023 ** 00024 ****************************************************************************/ 00025 00026 #ifndef _QX_ARCHIVE_WIDE_TRAITS_H_ 00027 #define _QX_ARCHIVE_WIDE_TRAITS_H_ 00028 00029 #ifdef _MSC_VER 00030 #pragma once 00031 #endif 00032 00040 #include <string> 00041 #include <iostream> 00042 #include <sstream> 00043 #include <fstream> 00044 00045 #include <boost/mpl/if.hpp> 00046 #include <boost/mpl/logical.hpp> 00047 00048 #include <QtCore/qstring.h> 00049 00050 #include <QxSerialize/boost/QxSerializeInclude.h> 00051 00052 namespace qx { 00053 namespace trait { 00054 00059 template <typename T> struct is_archive_wide { enum { value = false }; }; 00060 00061 #if _QX_SERIALIZE_WIDE_BINARY 00062 template <> struct is_archive_wide<boost::archive::binary_wiarchive> { enum { value = true }; }; 00063 template <> struct is_archive_wide<boost::archive::binary_woarchive> { enum { value = true }; }; 00064 #endif // _QX_SERIALIZE_WIDE_BINARY 00065 00066 #if _QX_SERIALIZE_WIDE_TEXT 00067 template <> struct is_archive_wide<boost::archive::text_wiarchive> { enum { value = true }; }; 00068 template <> struct is_archive_wide<boost::archive::text_woarchive> { enum { value = true }; }; 00069 #endif // _QX_SERIALIZE_WIDE_TEXT 00070 00071 #if _QX_SERIALIZE_WIDE_XML 00072 template <> struct is_archive_wide<boost::archive::xml_wiarchive> { enum { value = true }; }; 00073 template <> struct is_archive_wide<boost::archive::xml_woarchive> { enum { value = true }; }; 00074 #endif // _QX_SERIALIZE_WIDE_XML 00075 00076 template <typename T> 00077 class archive_wide_traits 00078 { 00079 00080 public: 00081 00082 enum { is_wide = qx::trait::is_archive_wide<T>::value }; 00083 00084 typedef typename boost::mpl::if_c<is_wide, wchar_t, char>::type type_char; 00085 typedef typename boost::mpl::if_c<is_wide, std::wstring, std::string>::type type_string; 00086 00087 typedef typename boost::mpl::if_c<is_wide, std::wistream, std::istream>::type type_istream; 00088 typedef typename boost::mpl::if_c<is_wide, std::wostream, std::ostream>::type type_ostream; 00089 00090 typedef typename boost::mpl::if_c<is_wide, std::wstringstream, std::stringstream>::type type_stringstream; 00091 typedef typename boost::mpl::if_c<is_wide, std::wistringstream, std::istringstream>::type type_istringstream; 00092 typedef typename boost::mpl::if_c<is_wide, std::wostringstream, std::ostringstream>::type type_ostringstream; 00093 00094 typedef typename boost::mpl::if_c<is_wide, std::wfstream, std::fstream>::type type_fstream; 00095 typedef typename boost::mpl::if_c<is_wide, std::wifstream, std::ifstream>::type type_ifstream; 00096 typedef typename boost::mpl::if_c<is_wide, std::wofstream, std::ofstream>::type type_ofstream; 00097 00098 static inline QString toQString(const type_string & str) { return cvtQString<is_wide, 0>::toQString(str); } 00099 static inline void fromQString(const QString & str, type_string & result) { cvtQString<is_wide, 0>::fromQString(str, result); } 00100 00101 static inline QByteArray toQByteArray(const type_string & str, type_string * owner) { return cvtQByteArray<is_wide, 0>::toQByteArray(str, owner); } 00102 static inline void fromQByteArray(const QByteArray & data, type_string & result) { cvtQByteArray<is_wide, 0>::fromQByteArray(data, result); } 00103 00104 private: 00105 00106 template <bool isWide /* = false */, int dummy> 00107 struct cvtQString 00108 { 00109 static inline QString toQString(const std::string & str) { return QString::fromStdString(str); } 00110 static inline void fromQString(const QString & str, std::string & result) { result = str.toStdString(); } 00111 }; 00112 00113 template <int dummy> 00114 struct cvtQString<true, dummy> 00115 { 00116 static inline QString toQString(const std::wstring & str) { return QString::fromStdWString(str); } 00117 static inline void fromQString(const QString & str, std::wstring & result) { result = str.toStdWString(); } 00118 }; 00119 00120 template <bool isWide /* = false */, int dummy> 00121 struct cvtQByteArray 00122 { 00123 static inline QByteArray toQByteArray(const std::string & str, std::string * owner) 00124 { if (owner) { (* owner) = str; }; return (owner ? QByteArray::fromRawData(owner->data(), owner->size()) : QByteArray(str.data(), str.size())); } 00125 static inline void fromQByteArray(const QByteArray & data, std::string & result) 00126 { result.clear(); result.append(data.constData(), data.size()); } 00127 }; 00128 00129 template <int dummy> 00130 struct cvtQByteArray<true, dummy> 00131 { 00132 static inline QByteArray toQByteArray(const std::wstring & str, std::wstring * owner) 00133 { Q_UNUSED(owner); return QString::fromStdWString(str).toUtf8(); } 00134 static inline void fromQByteArray(const QByteArray & data, std::wstring & result) 00135 { result = QString::fromUtf8(data.constData(), data.size()).toStdWString(); } 00136 }; 00137 00138 }; 00139 00140 } // namespace trait 00141 } // namespace qx 00142 00143 #endif // _QX_ARCHIVE_WIDE_TRAITS_H_