it_bus/string_io.h

#ifndef _IT_BUS_USTRING_IO_H_
#define _IT_BUS_USTRING_IO_H_

//
//      Copyright (c) 2004 IONA Technologies PLC. All Rights Reserved.
//

// Provides IO (stream-input functions) for IT_Bus::String

#include <it_bus/string.h>
#include <it_cal/iostream.h>

// Helper template classes
// We use templates (instead of inline or static functions) to avoid 
// duplicate copies in multiple translation units of the same 
// library.
// With some compilers it is possible to mix std and classic iostreams
// in the same library: this is why we use different template names.

#if IT_STD

template<class T> 
class IT_StdUStringIO
{
  public:

    static IT_istream& 
    read_string(
        IT_istream&   is,
        T& s
    );
    
    static IT_istream& 
    getline(
        IT_istream&          is,
        T&                   s,
        char                 c
    );
};

#else

template<class T> 
class IT_CiosUStringIO
{
  public:

    static IT_istream& 
    read_string(
        IT_istream&   is,
        T& s
    );
    
    static IT_istream& 
    getline(
        IT_istream&          is,
        T&                   s,
        char                 c
    );
};
#endif                                           

inline IT_istream& 
operator>>(
    IT_istream&   is,
    IT_Bus::String& s
)
{
#if IT_STD
    return IT_StdUStringIO<IT_Bus::String>::read_string(is, s);
#else
    return IT_CiosUStringIO<IT_Bus::String>::read_string(is, s);
#endif

}
inline IT_istream& 
getline(
    IT_istream&          is,
    IT_Bus::String&           s,
    char                 c  = '\n'
)
{
#if IT_STD
    return IT_StdUStringIO<IT_Bus::String>::getline(is, s, c);
#else
    return IT_CiosUStringIO<IT_Bus::String>::getline(is, s, c);
#endif
}

#if IT_SUPPORTS_COMPILE_TIME_INSTANTIATION
#include <it_bus/string_io.cxx>
#endif

#endif  

---