streambuf.tcc File Reference

Macros
#define	_STREAMBUF_TCC   1

Functions
namespace std	_GLIBCXX_VISIBILITY (default)

Detailed Description

This is an internal header file, included by other library headers. Do not attempt to use it directly. {streambuf}

Macro Definition Documentation

#define _STREAMBUF_TCC   1

Function Documentation

namespace std _GLIBCXX_VISIBILITY

(

default

)

{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

  template<typename _CharT, typename _Traits>
    streamsize
    basic_streambuf<_CharT, _Traits>::
    xsgetn(char_type* __s, streamsize __n)
    {
      streamsize __ret = 0;
      while (__ret < __n)
    {
      const streamsize __buf_len = this->egptr() - this->gptr();
      if (__buf_len)
        {
          const streamsize __remaining = __n - __ret;
          const streamsize __len = std::min(__buf_len, __remaining);
          traits_type::copy(__s, this->gptr(), __len);
          __ret += __len;
          __s += __len;
          this->__safe_gbump(__len);
        }

      if (__ret < __n)
        {
          const int_type __c = this->uflow();
          if (!traits_type::eq_int_type(__c, traits_type::eof()))
        {
          traits_type::assign(*__s++, traits_type::to_char_type(__c));
          ++__ret;
        }
          else
        break;
        }
    }
      return __ret;
    }

  template<typename _CharT, typename _Traits>
    streamsize
    basic_streambuf<_CharT, _Traits>::
    xsputn(const char_type* __s, streamsize __n)
    {
      streamsize __ret = 0;
      while (__ret < __n)
    {
      const streamsize __buf_len = this->epptr() - this->pptr();
      if (__buf_len)
        {
          const streamsize __remaining = __n - __ret;
          const streamsize __len = std::min(__buf_len, __remaining);
          traits_type::copy(this->pptr(), __s, __len);
          __ret += __len;
          __s += __len;
          this->__safe_pbump(__len);
        }

      if (__ret < __n)
        {
          int_type __c = this->overflow(traits_type::to_int_type(*__s));
          if (!traits_type::eq_int_type(__c, traits_type::eof()))
        {
          ++__ret;
          ++__s;
        }
          else
        break;
        }
    }
      return __ret;
    }

  // Conceivably, this could be used to implement buffer-to-buffer
  // copies, if this was ever desired in an un-ambiguous way by the
  // standard.
  template<typename _CharT, typename _Traits>
    streamsize
    __copy_streambufs_eof(basic_streambuf<_CharT, _Traits>* __sbin,
              basic_streambuf<_CharT, _Traits>* __sbout,
              bool& __ineof)
    {
      streamsize __ret = 0;
      __ineof = true;
      typename _Traits::int_type __c = __sbin->sgetc();
      while (!_Traits::eq_int_type(__c, _Traits::eof()))
    {
      __c = __sbout->sputc(_Traits::to_char_type(__c));
      if (_Traits::eq_int_type(__c, _Traits::eof()))
        {
          __ineof = false;
          break;
        }
      ++__ret;
      __c = __sbin->snextc();
    }
      return __ret;
    }

  template<typename _CharT, typename _Traits>
    inline streamsize
    __copy_streambufs(basic_streambuf<_CharT, _Traits>* __sbin,
              basic_streambuf<_CharT, _Traits>* __sbout)
    {
      bool __ineof;
      return __copy_streambufs_eof(__sbin, __sbout, __ineof);
    }

  // Inhibit implicit instantiations for required instantiations,
  // which are defined via explicit instantiations elsewhere.
#if _GLIBCXX_EXTERN_TEMPLATE
  extern template class basic_streambuf<char>;
  extern template
    streamsize
    __copy_streambufs(basic_streambuf<char>*,
              basic_streambuf<char>*);
  extern template
    streamsize
    __copy_streambufs_eof(basic_streambuf<char>*,
              basic_streambuf<char>*, bool&);

#ifdef _GLIBCXX_USE_WCHAR_T
  extern template class basic_streambuf<wchar_t>;
  extern template
    streamsize
    __copy_streambufs(basic_streambuf<wchar_t>*,
              basic_streambuf<wchar_t>*);
  extern template
    streamsize
    __copy_streambufs_eof(basic_streambuf<wchar_t>*,
              basic_streambuf<wchar_t>*, bool&);
#endif
#endif

_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std