MY_FSTREAMS.h

#pragma once
#include <iostream.h>
#include <iomanip.h>
#include <fstream.h>

class END_OF_FILE {};

#define  seekg_(offset, base)  rdbuf()->pubseekpos(offset, base)
//#define  tellg_() rdbuf()->pubseekoff(0, ios::cur, ios::in).offset()
#define  tellg_()   rdbuf()->pubseekoff(0, ios_base::cur, ios_base::in)


//******************************************
class MY_IFSTREAM : public IFSTREAM
{
public:
    MY_IFSTREAM();
    MY_IFSTREAM(const CHAR  * name);
    virtual ~MY_IFSTREAM();
    
    USHORT  cur_line();
    VOID    my_get(CHAR  & ch);
    VOID    my_get_line(
        CHAR *  ch_p,
        USHORT  max_len,
        CHAR    last_ch);   
    
#ifdef   _mac_gui_app //''''''''''''''''''''''''''''''''''''''''''''\\.

    VOID    mac_open(const FSSpec  & fs_spec, openmode mode = in);
#endif //_mac_gui_app \\............................................//

};
//******************************************
class MY_OFSTREAM : public ofstream
{
public:
    MY_OFSTREAM();
    MY_OFSTREAM(const CHAR  * name);
    virtual ~MY_OFSTREAM();

#ifdef   _mac_gui_app //''''''''''''''''''''''''''''''''''''''''''''\\.

    VOID mac_open(const FSSpec  & fs_spec, openmode mode = out|trunc);
#endif //_mac_gui_app \\............................................//

};

/*
The new ANSI C++ standard is very strict with its file opening modes. 
 Only certain combinations are allowed.

In the draft C++ standard for the Library, the following are defined (para
17.4.8.1.4) as valid combinations of ios::openmode for opening a
file---these are defined in terms of the equivalent modestr used in
fopen(s, modestr) (see para 7.9.5.3 of ANSI standard for C):
   ios::in                                       modestr = "r"
   ios::out | ios::trunc                         modestr = "w"
   ios::out | ios::app                           modestr = "a"
   ios::in  | ios::binary                           modestr = "rb"
   ios::out | ios::trunc | ios::binary              modestr = "wb"
   ios::out | ios::app   | ios::binary              modestr = "ab"
   ios::in  | ios::out                           modestr = "r+"
   ios::in  | ios::out   | ios::trunc            modestr = "w+"
   ios::in  | ios::out   | ios::app              modestr = "a+"
   ios::in  | ios::out   | ios::binary              modestr = "r+b"
   ios::in  | ios::out   | ios::trunc | ios::binary   modestr = "w+b"
   ios::in  | ios::out   | ios::app   | ios::binary    modestr = "a+b"
All other combinations are invalid and no file is opened and no error
message is produced.

With the ANSI Draft Version used by Metrowerks, you can use
is_open() to check that the file has been opened properly,  as in

 OutStream(outfile, ios::out | ios::trunc);   
if( !OutStream.is_open() ) { cerr << "file failed to open"; exit(1); }

*/