MRFile.h

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#pragma once
 
#include "MRMeshFwd.h"
#include <filesystem>
#include <cstdio>
 
namespace MR
{
 
MRMESH_API FILE * fopen( const std::filesystem::path & filename, const char * mode );
 
class File
{
public:
    File() = default;
    File( const File & ) = delete;
    File( File && r ) : handle_( r.handle_ ) { r.detach(); }
    File( const std::filesystem::path & filename, const char * mode ) { open( filename, mode ); }
    ~File() { close(); }
 
    File& operator =( const File & ) = delete;
    File& operator =( File && r ) { close(); handle_ = r.handle_; r.detach(); return * this; }
 
    operator FILE *() const { return handle_; }
 
    MRMESH_API FILE * open( const std::filesystem::path & filename, const char * mode );
    MRMESH_API void close();
 
    void detach() { handle_ = nullptr; }
    void attach( FILE * h ) { if ( handle_ != h ) { close(); handle_ = h; } }
 
private:
    FILE * handle_ = nullptr;
};
 
} // namespace MR