ostream.tcc

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// ostream classes -*- C++ -*-

// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
// 2006, 2007, 2008, 2009, 2010, 2011
// Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.

// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
// <http://www.gnu.org/licenses/>.

/** @file bits/ostream.tcc
 *  This is an internal header file, included by other library headers.
 *  Do not attempt to use it directly. @headername{ostream}
 */

//
// ISO C++ 14882: 27.6.2  Output streams
//

#ifndef _OSTREAM_TCC
#define _OSTREAM_TCC 1

#pragma GCC system_header

#include <bits/cxxabi_forced.h>

namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>::sentry::
    sentry(basic_ostream<_CharT, _Traits>& __os)
    : _M_ok(false), _M_os(__os)
    {
      // XXX MT
      if (__os.tie() && __os.good())
    __os.tie()->flush();

      if (__os.good())
    _M_ok = true;
      else
    __os.setstate(ios_base::failbit);
    }

  template<typename _CharT, typename _Traits>
    template<typename _ValueT>
      basic_ostream<_CharT, _Traits>&
      basic_ostream<_CharT, _Traits>::
      _M_insert(_ValueT __v)
      {
    sentry __cerb(*this);
    if (__cerb)
      {
        ios_base::iostate __err = ios_base::goodbit;
        __try
          {
        const __num_put_type& __np = __check_facet(this->_M_num_put);
        if (__np.put(*this, *this, this->fill(), __v).failed())
          __err |= ios_base::badbit;
          }
        __catch(__cxxabiv1::__forced_unwind&)
          {
        this->_M_setstate(ios_base::badbit);        
        __throw_exception_again;
          }
        __catch(...)
          { this->_M_setstate(ios_base::badbit); }
        if (__err)
          this->setstate(__err);
      }
    return *this;
      }

  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>&
    basic_ostream<_CharT, _Traits>::
    operator<<(short __n)
    {
      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 117. basic_ostream uses nonexistent num_put member functions.
      const ios_base::fmtflags __fmt = this->flags() & ios_base::basefield;
      if (__fmt == ios_base::oct || __fmt == ios_base::hex)
    return _M_insert(static_cast<long>(static_cast<unsigned short>(__n)));
      else
    return _M_insert(static_cast<long>(__n));
    }

  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>&
    basic_ostream<_CharT, _Traits>::
    operator<<(int __n)
    {
      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 117. basic_ostream uses nonexistent num_put member functions.
      const ios_base::fmtflags __fmt = this->flags() & ios_base::basefield;
      if (__fmt == ios_base::oct || __fmt == ios_base::hex)
    return _M_insert(static_cast<long>(static_cast<unsigned int>(__n)));
      else
    return _M_insert(static_cast<long>(__n));
    }
  
  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>&
    basic_ostream<_CharT, _Traits>::
    operator<<(__streambuf_type* __sbin)
    {
      ios_base::iostate __err = ios_base::goodbit;
      sentry __cerb(*this);
      if (__cerb && __sbin)
    {
      __try
        {
          if (!__copy_streambufs(__sbin, this->rdbuf()))
        __err |= ios_base::failbit;
        }
      __catch(__cxxabiv1::__forced_unwind&)
        {
          this->_M_setstate(ios_base::badbit);      
          __throw_exception_again;
        }
      __catch(...)
        { this->_M_setstate(ios_base::failbit); }
    }
      else if (!__sbin)
    __err |= ios_base::badbit;
      if (__err)
    this->setstate(__err);
      return *this;
    }

  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>&
    basic_ostream<_CharT, _Traits>::
    put(char_type __c)
    {
      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // DR 60. What is a formatted input function?
      // basic_ostream::put(char_type) is an unformatted output function.
      // DR 63. Exception-handling policy for unformatted output.
      // Unformatted output functions should catch exceptions thrown
      // from streambuf members.
      sentry __cerb(*this);
      if (__cerb)
    {
      ios_base::iostate __err = ios_base::goodbit;
      __try
        {
          const int_type __put = this->rdbuf()->sputc(__c);
          if (traits_type::eq_int_type(__put, traits_type::eof()))
        __err |= ios_base::badbit;
        }
      __catch(__cxxabiv1::__forced_unwind&)
        {
          this->_M_setstate(ios_base::badbit);      
          __throw_exception_again;
        }
      __catch(...)
        { this->_M_setstate(ios_base::badbit); }
      if (__err)
        this->setstate(__err);
    }
      return *this;
    }

  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>&
    basic_ostream<_CharT, _Traits>::
    write(const _CharT* __s, streamsize __n)
    {
      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // DR 60. What is a formatted input function?
      // basic_ostream::write(const char_type*, streamsize) is an
      // unformatted output function.
      // DR 63. Exception-handling policy for unformatted output.
      // Unformatted output functions should catch exceptions thrown
      // from streambuf members.
      sentry __cerb(*this);
      if (__cerb)
    {
      __try
        { _M_write(__s, __n); }
      __catch(__cxxabiv1::__forced_unwind&)
        {
          this->_M_setstate(ios_base::badbit);      
          __throw_exception_again;
        }
      __catch(...)
        { this->_M_setstate(ios_base::badbit); }
    }
      return *this;
    }

  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>&
    basic_ostream<_CharT, _Traits>::
    flush()
    {
      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // DR 60. What is a formatted input function?
      // basic_ostream::flush() is *not* an unformatted output function.
      ios_base::iostate __err = ios_base::goodbit;
      __try
    {
      if (this->rdbuf() && this->rdbuf()->pubsync() == -1)
        __err |= ios_base::badbit;
    }
      __catch(__cxxabiv1::__forced_unwind&)
    {
      this->_M_setstate(ios_base::badbit);      
      __throw_exception_again;
    }
      __catch(...)
    { this->_M_setstate(ios_base::badbit); }
      if (__err)
    this->setstate(__err);
      return *this;
    }

  template<typename _CharT, typename _Traits>
    typename basic_ostream<_CharT, _Traits>::pos_type
    basic_ostream<_CharT, _Traits>::
    tellp()
    {
      pos_type __ret = pos_type(-1);
      __try
    {
      if (!this->fail())
        __ret = this->rdbuf()->pubseekoff(0, ios_base::cur, ios_base::out);
    }
      __catch(__cxxabiv1::__forced_unwind&)
    {
      this->_M_setstate(ios_base::badbit);      
      __throw_exception_again;
    }
      __catch(...)
    { this->_M_setstate(ios_base::badbit); }
      return __ret;
    }

  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>&
    basic_ostream<_CharT, _Traits>::
    seekp(pos_type __pos)
    {
      ios_base::iostate __err = ios_base::goodbit;
      __try
    {
      if (!this->fail())
        {
          // _GLIBCXX_RESOLVE_LIB_DEFECTS
          // 136.  seekp, seekg setting wrong streams?
          const pos_type __p = this->rdbuf()->pubseekpos(__pos,
                                 ios_base::out);

          // 129. Need error indication from seekp() and seekg()
          if (__p == pos_type(off_type(-1)))
        __err |= ios_base::failbit;
        }
    }
      __catch(__cxxabiv1::__forced_unwind&)
    {
      this->_M_setstate(ios_base::badbit);      
      __throw_exception_again;
    }
      __catch(...)
    { this->_M_setstate(ios_base::badbit); }
      if (__err)
    this->setstate(__err);
      return *this;
    }

  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>&
    basic_ostream<_CharT, _Traits>::
    seekp(off_type __off, ios_base::seekdir __dir)
    {
      ios_base::iostate __err = ios_base::goodbit;
      __try
    {
      if (!this->fail())
        {
          // _GLIBCXX_RESOLVE_LIB_DEFECTS
          // 136.  seekp, seekg setting wrong streams?
          const pos_type __p = this->rdbuf()->pubseekoff(__off, __dir,
                                 ios_base::out);

          // 129. Need error indication from seekp() and seekg()
          if (__p == pos_type(off_type(-1)))
        __err |= ios_base::failbit;
        }
    }
      __catch(__cxxabiv1::__forced_unwind&)
    {
      this->_M_setstate(ios_base::badbit);      
      __throw_exception_again;
    }
      __catch(...)
    { this->_M_setstate(ios_base::badbit); }
      if (__err)
    this->setstate(__err);
      return *this;
    }

  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>&
    operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s)
    {
      if (!__s)
    __out.setstate(ios_base::badbit);
      else
    {
      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 167.  Improper use of traits_type::length()
      const size_t __clen = char_traits<char>::length(__s);
      __try
        {
          struct __ptr_guard
          {
        _CharT *__p;
        __ptr_guard (_CharT *__ip): __p(__ip) { }
        ~__ptr_guard() { delete[] __p; }
        _CharT* __get() { return __p; }
          } __pg (new _CharT[__clen]);

          _CharT *__ws = __pg.__get();
          for (size_t  __i = 0; __i < __clen; ++__i)
        __ws[__i] = __out.widen(__s[__i]);
          __ostream_insert(__out, __ws, __clen);
        }
      __catch(__cxxabiv1::__forced_unwind&)
        {
          __out._M_setstate(ios_base::badbit);
          __throw_exception_again;
        }
      __catch(...)
        { __out._M_setstate(ios_base::badbit); }
    }
      return __out;
    }

  // Inhibit implicit instantiations for required instantiations,
  // which are defined via explicit instantiations elsewhere.
#if _GLIBCXX_EXTERN_TEMPLATE
  extern template class basic_ostream<char>;
  extern template ostream& endl(ostream&);
  extern template ostream& ends(ostream&);
  extern template ostream& flush(ostream&);
  extern template ostream& operator<<(ostream&, char);
  extern template ostream& operator<<(ostream&, unsigned char);
  extern template ostream& operator<<(ostream&, signed char);
  extern template ostream& operator<<(ostream&, const char*);
  extern template ostream& operator<<(ostream&, const unsigned char*);
  extern template ostream& operator<<(ostream&, const signed char*);

  extern template ostream& ostream::_M_insert(long);
  extern template ostream& ostream::_M_insert(unsigned long);
  extern template ostream& ostream::_M_insert(bool);
#ifdef _GLIBCXX_USE_LONG_LONG
  extern template ostream& ostream::_M_insert(long long);
  extern template ostream& ostream::_M_insert(unsigned long long);
#endif
  extern template ostream& ostream::_M_insert(double);
  extern template ostream& ostream::_M_insert(long double);
  extern template ostream& ostream::_M_insert(const void*);

#ifdef _GLIBCXX_USE_WCHAR_T
  extern template class basic_ostream<wchar_t>;
  extern template wostream& endl(wostream&);
  extern template wostream& ends(wostream&);
  extern template wostream& flush(wostream&);
  extern template wostream& operator<<(wostream&, wchar_t);
  extern template wostream& operator<<(wostream&, char);
  extern template wostream& operator<<(wostream&, const wchar_t*);
  extern template wostream& operator<<(wostream&, const char*);

  extern template wostream& wostream::_M_insert(long);
  extern template wostream& wostream::_M_insert(unsigned long);
  extern template wostream& wostream::_M_insert(bool);
#ifdef _GLIBCXX_USE_LONG_LONG
  extern template wostream& wostream::_M_insert(long long);
  extern template wostream& wostream::_M_insert(unsigned long long);
#endif
  extern template wostream& wostream::_M_insert(double);
  extern template wostream& wostream::_M_insert(long double);
  extern template wostream& wostream::_M_insert(const void*);
#endif
#endif

_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std

#endif