od_istream.h

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#pragma once

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        Bert
 Date:          Sep 2013
________________________________________________________________________

-*/

#include "basicmod.h"
#include "od_stream.h"
class SeparString;
class CompoundKey;
class FixedString;
class DBKey;


mExpClass(Basic) od_istream : public od_stream
{
public:

                        od_istream()                    {}
                        od_istream( const char* fnm )
                            : od_stream(fnm,false)      {}
                        od_istream( const File::Path& fp )
                            : od_stream(fp,false)       {}
                        od_istream( std::istream* s )
                            : od_stream(s)              {}
                        od_istream( std::istream& s )
                            : od_stream(s)              {}

                        od_istream(const od_istream&) = delete;
                        od_istream(od_istream&&);
    od_istream&         operator=(const od_istream&) = delete;
    od_istream&         operator=(od_istream&&);

    bool                open(const char*);
    bool                reOpen();

    od_istream&         get(char&);
                        /*<!Use this function to get regular text inputs.
                          If you want to analyze an alien stream char-by-char,
                          use peek()-ignore(1) call pairs.*/

    od_istream&         get(unsigned char&);
    od_istream&         get(od_int16&);
    od_istream&         get(od_uint16&);
    od_istream&         get(od_int32&);
    od_istream&         get(od_uint32&);
    od_istream&         get(od_int64&);
    od_istream&         get(od_uint64&);
#ifdef __lux64__
    od_istream&         get(long long&);
    od_istream&         get(unsigned long long&);
#else
    od_istream&         get(long&);
    od_istream&         get(unsigned long&);
#endif
    od_istream&         get(float&);
    od_istream&         get(double&);

    od_istream&         get( BufferString& bs, bool allowgotonextline=true )
                        { getWord(bs,allowgotonextline); return *this; }

    od_istream&         get(IOPar&);
    od_istream&         get(SeparString&);
    od_istream&         get(CompoundKey&);
    od_istream&         get(DBKey&);

    od_istream&         getC(char*,int maxnrchar);
    od_istream&         get(char*); 
    od_istream&         get(FixedString&); 
    od_istream&         get(void*); 

    bool                getWord(BufferString&,bool allowgotonextline=true);
    bool                getLine(BufferString&,bool* newline_found=0);
    bool                getAll(BufferString&);

    bool                getBin(void*,Count nrbytes);
    template <class T>
    od_istream&         getBin(T&);

    char                peek() const;
    void                ignore(Count);
    bool                skipUntil(char);
    bool                skipWord();
    bool                skipLine();

    Count               lastNrBytesRead() const;
    std::istream&       stdStream();
    bool                atEOF() const;

    static od_istream&  nullStream();

};



template <class T> inline od_istream& operator >>( od_istream& s, T& t )
{ return s.get( t ); }

template <class T>
inline od_istream& od_istream::getBin( T& t )
{
    getBin( &t, sizeof(T) );
    return *this;
}