/*
 * Copyright (c) 1998
 * Silicon Graphics Computer Systems, Inc.
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Silicon Graphics makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 */ 

#ifndef __SGI_STL_IOMANIP
#define __SGI_STL_IOMANIP

#if defined(__sgi) && !defined(__GNUC__) && !defined(_STANDARD_C_PLUS_PLUS)
#error This header file requires the -LANG:std option
#endif

#include <istream>              // Includes <ostream> and <ios>

__STL_BEGIN_NAMESPACE

//----------------------------------------------------------------------
// Machinery for defining manipulators.

// Class that calls one of ios_base's single-argument member functions.
template <class _Arg>
struct _Ios_Manip_1 {
  _Ios_Manip_1(_Arg (ios_base::*__f)(_Arg), const _Arg& __arg)
    : _M_f(__f), _M_arg(__arg)
    {}

  void operator()(ios_base& __ios) const {
    (__ios.*_M_f)(_M_arg);
  }

  _Arg (ios_base::*_M_f)(_Arg);
  _Arg _M_arg;
};

// Class that calls one of ios_base's two-argument member functions.
struct _Ios_Setf_Manip {
  ios_base::fmtflags _M_flag;
  ios_base::fmtflags _M_mask;
  bool _M_two_args;

  _Ios_Setf_Manip(ios_base::fmtflags __f)
    : _M_flag(__f), _M_mask(0), _M_two_args(false)
    {}

  _Ios_Setf_Manip(ios_base::fmtflags __f, ios_base::fmtflags __m)
    : _M_flag(__f), _M_mask(__m), _M_two_args(true)
    {}

  void operator()(ios_base& __ios) const {
    if (_M_two_args)
      __ios.setf(_M_flag, _M_mask);
    else
      __ios.setf(_M_flag);
  }
};


template <class _CharT, class _Traits, class _Arg>
inline basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __in,
           const _Ios_Manip_1<_Arg>& __f)
{
  __f(__in);
  return __in;
}

template <class _CharT, class _Traits, class _Arg>
inline basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os,
           const _Ios_Manip_1<_Arg>& __f)
{
  __f(__os);
  return __os;
}

template <class _CharT, class _Traits>
inline basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __in, const _Ios_Setf_Manip& __f)
{
  __f(__in);
  return __in;
}

template <class _CharT, class _Traits>
inline basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os, const _Ios_Setf_Manip& __f)

{
  __f(__os);
  return __os;
}

//----------------------------------------------------------------------
// The ios_base manipulators.

inline _Ios_Setf_Manip resetiosflags(ios_base::fmtflags __mask) {
  return _Ios_Setf_Manip(0, __mask);
}

inline _Ios_Setf_Manip setiosflags(ios_base::fmtflags __flag) {
  return _Ios_Setf_Manip(__flag);
}

inline _Ios_Setf_Manip setbase(int __n) {
  ios_base::fmtflags __base = __n == 8  ? ios_base::oct :
                              __n == 10 ? ios_base::dec :
                              __n == 16 ? ios_base::hex :
                              ios_base::fmtflags(0);
  return _Ios_Setf_Manip(__base, ios_base::basefield);
}

inline _Ios_Manip_1<streamsize> 
setprecision(int __n) {
  return _Ios_Manip_1<streamsize>(&ios_base::precision, __n);
}

inline _Ios_Manip_1<streamsize> 
setw(int __n) {
  return _Ios_Manip_1<streamsize>(&ios_base::width, __n);
}

//----------------------------------------------------------------------
// setfill, a manipulator that operates on basic_ios<> instead of ios_base.

template <class _CharT>
struct _Setfill_Manip {
  _Setfill_Manip(_CharT __c) : _M_c(__c) {}
  _CharT _M_c;
};

template <class _CharT, class _CharT2, class _Traits>
inline basic_ostream<_CharT, _Traits>& 
operator<<(basic_ostream<_CharT, _Traits>& __os, 
           const _Setfill_Manip<_CharT2>& __m)
{
  __os.fill(__m._M_c);
  return __os;
}

template <class _CharT>
inline _Setfill_Manip<_CharT> 
setfill(_CharT __c) {
  return _Setfill_Manip<_CharT>(__c);
}


__STL_END_NAMESPACE

#endif /* __SGI_STL_IOMANIP */

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