FindCfgFile.h

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// Copyright 2014 GSI, Inc. All rights reserved.
//
// The FindCfgFile.h header holds the CFindCfgFile class.
//
#ifndef FINDCFGFILE_H_
#define FINDCFGFILE_H_

// STD
#include <iterator>
// MiscCommon
#include "SysHelper.h"

namespace MiscCommon
{
    template <class _T>
    struct SFileExists
    {
        bool operator()(const _T& _Path) const
        {
            _T path(_Path);
            MiscCommon::smart_path(&path);
            return (file_exists(path));
        }
    };
    template <class _T>
    class CFindCfgFile
    {
      public:
        typedef _T container_value;
        typedef std::vector<_T> container_type;

      public:
        CFindCfgFile& SetOrder(const container_value& _Path)
        {
            m_Paths.push_back(_Path);
            return *this;
        }

        CFindCfgFile& operator()(const container_value& _Path)
        {
            m_Paths.push_back(_Path);
            return *this;
        }

        void GetCfg(_T* _RetVal)
        {
            if (!_RetVal)
                return;
            typename container_type::const_iterator iter(
                find_if(m_Paths.begin(), m_Paths.end(), SFileExists<container_value>()));

            if (m_Paths.end() == iter)
                return;

            *_RetVal = *iter;
        }

        void DumpOrder(std::ostream* _stream, const container_value& _Seporator)
        {
            if (!_stream)
                return;

            std::copy(
                m_Paths.begin(), m_Paths.end(), std::ostream_iterator<container_value>(*_stream, _Seporator.c_str()));
        }

      private:
        container_type m_Paths;
    };
}; // namespace MiscCommon

#endif /*FINDCFGFILE_H_*/