// **************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: http://www.gnu.org/licenses/gpl.html       *
// * Copyright (C) 2008-2011 ZenJu (zhnmju123 AT gmx.de)                    *
// **************************************************************************

#ifndef FILEERROR_H_INCLUDED
#define FILEERROR_H_INCLUDED

#include "zstring.h"
#include "string_utf8.h"
#include <string>


namespace zen
{
class FileError //Exception base class used to notify file/directory copy/delete errors
{
public:
    FileError(const std::wstring& message) : errorMessage(message) {}
    virtual ~FileError() {}

    const std::wstring& msg() const { return errorMessage; }

private:
    std::wstring errorMessage;
};

#define DEFINE_NEW_FILE_ERROR(X) struct X : public FileError { X(const std::wstring& message) : FileError(message) {} };

DEFINE_NEW_FILE_ERROR(ErrorNotExisting);
DEFINE_NEW_FILE_ERROR(ErrorTargetExisting);
DEFINE_NEW_FILE_ERROR(ErrorTargetPathMissing);
DEFINE_NEW_FILE_ERROR(ErrorFileLocked);



//----------- facilitate usage of std::wstring for error messages --------------------

//allow implicit UTF8 conversion: since std::wstring models a GUI string, convenience is more important than performance
inline std::wstring operator+(const std::wstring& lhs, const Zstring&      rhs) { return std::wstring(lhs) += zen::utf8CvrtTo<std::wstring>(rhs); }

//we musn't put our overloads in namespace std, but namespace zen (+ using directive) is sufficient
inline std::wstring operator+(const std::wstring& lhs, const char*         rhs) { return std::wstring(lhs) += utf8CvrtTo<std::wstring>(rhs); }
inline std::wstring operator+(const std::wstring& lhs, const std::string&  rhs) { return std::wstring(lhs) += utf8CvrtTo<std::wstring>(rhs); }
}

#endif // FILEERROR_H_INCLUDED