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minix/external/bsd/libc++/dist/libcxx/include/streambuf
Lionel Sambuc 4684ddb6aa LLVM Minix changes 
- import libcxx
 - reduce targets to the one when compiled as a tools

Change-Id: Iabb8427f80ff8e89463559a28bcb8b4f2bdbc496
2014-07-28 17:05:59 +02:00

564 lines
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C++
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// -*- C++ -*-
//===------------------------- streambuf ----------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_STEAMBUF
#define _LIBCPP_STEAMBUF
/*
streambuf synopsis
namespace std
{
template <class charT, class traits = char_traits<charT> >
class basic_streambuf
{
public:
// types:
typedef charT char_type;
typedef traits traits_type;
typedef typename traits_type::int_type int_type;
typedef typename traits_type::pos_type pos_type;
typedef typename traits_type::off_type off_type;
virtual ~basic_streambuf();
// 27.6.2.2.1 locales:
locale pubimbue(const locale& loc);
locale getloc() const;
// 27.6.2.2.2 buffer and positioning:
basic_streambuf* pubsetbuf(char_type* s, streamsize n);
pos_type pubseekoff(off_type off, ios_base::seekdir way,
ios_base::openmode which = ios_base::in | ios_base::out);
pos_type pubseekpos(pos_type sp,
ios_base::openmode which = ios_base::in | ios_base::out);
int pubsync();
// Get and put areas:
// 27.6.2.2.3 Get area:
streamsize in_avail();
int_type snextc();
int_type sbumpc();
int_type sgetc();
streamsize sgetn(char_type* s, streamsize n);
// 27.6.2.2.4 Putback:
int_type sputbackc(char_type c);
int_type sungetc();
// 27.6.2.2.5 Put area:
int_type sputc(char_type c);
streamsize sputn(const char_type* s, streamsize n);
protected:
basic_streambuf();
basic_streambuf(const basic_streambuf& rhs);
basic_streambuf& operator=(const basic_streambuf& rhs);
void swap(basic_streambuf& rhs);
// 27.6.2.3.2 Get area:
char_type* eback() const;
char_type* gptr() const;
char_type* egptr() const;
void gbump(int n);
void setg(char_type* gbeg, char_type* gnext, char_type* gend);
// 27.6.2.3.3 Put area:
char_type* pbase() const;
char_type* pptr() const;
char_type* epptr() const;
void pbump(int n);
void setp(char_type* pbeg, char_type* pend);
// 27.6.2.4 virtual functions:
// 27.6.2.4.1 Locales:
virtual void imbue(const locale& loc);
// 27.6.2.4.2 Buffer management and positioning:
virtual basic_streambuf* setbuf(char_type* s, streamsize n);
virtual pos_type seekoff(off_type off, ios_base::seekdir way,
ios_base::openmode which = ios_base::in | ios_base::out);
virtual pos_type seekpos(pos_type sp,
ios_base::openmode which = ios_base::in | ios_base::out);
virtual int sync();
// 27.6.2.4.3 Get area:
virtual streamsize showmanyc();
virtual streamsize xsgetn(char_type* s, streamsize n);
virtual int_type underflow();
virtual int_type uflow();
// 27.6.2.4.4 Putback:
virtual int_type pbackfail(int_type c = traits_type::eof());
// 27.6.2.4.5 Put area:
virtual streamsize xsputn(const char_type* s, streamsize n);
virtual int_type overflow (int_type c = traits_type::eof());
};
} // std
*/
#include <__config>
#include <iosfwd>
#include <ios>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _CharT, class _Traits>
class _LIBCPP_TYPE_VIS_ONLY basic_streambuf
{
public:
// types:
typedef _CharT char_type;
typedef _Traits traits_type;
typedef typename traits_type::int_type int_type;
typedef typename traits_type::pos_type pos_type;
typedef typename traits_type::off_type off_type;
virtual ~basic_streambuf();
// 27.6.2.2.1 locales:
locale pubimbue(const locale& __loc);
locale getloc() const;
// 27.6.2.2.2 buffer and positioning:
basic_streambuf* pubsetbuf(char_type* __s, streamsize __n);
pos_type pubseekoff(off_type __off, ios_base::seekdir __way,
ios_base::openmode __which = ios_base::in | ios_base::out);
pos_type pubseekpos(pos_type __sp,
ios_base::openmode __which = ios_base::in | ios_base::out);
int pubsync();
// Get and put areas:
// 27.6.2.2.3 Get area:
streamsize in_avail();
int_type snextc();
int_type sbumpc();
int_type sgetc();
streamsize sgetn(char_type* __s, streamsize __n);
// 27.6.2.2.4 Putback:
int_type sputbackc(char_type __c);
int_type sungetc();
// 27.6.2.2.5 Put area:
int_type sputc(char_type __c);
streamsize sputn(const char_type* __s, streamsize __n);
protected:
basic_streambuf();
basic_streambuf(const basic_streambuf& __rhs);
basic_streambuf& operator=(const basic_streambuf& __rhs);
void swap(basic_streambuf& __rhs);
// 27.6.2.3.2 Get area:
_LIBCPP_ALWAYS_INLINE char_type* eback() const {return __binp_;}
_LIBCPP_ALWAYS_INLINE char_type* gptr() const {return __ninp_;}
_LIBCPP_ALWAYS_INLINE char_type* egptr() const {return __einp_;}
void gbump(int __n);
void setg(char_type* __gbeg, char_type* __gnext, char_type* __gend);
// 27.6.2.3.3 Put area:
_LIBCPP_ALWAYS_INLINE char_type* pbase() const {return __bout_;}
_LIBCPP_ALWAYS_INLINE char_type* pptr() const {return __nout_;}
_LIBCPP_ALWAYS_INLINE char_type* epptr() const {return __eout_;}
void pbump(int __n);
void setp(char_type* __pbeg, char_type* __pend);
// 27.6.2.4 virtual functions:
// 27.6.2.4.1 Locales:
virtual void imbue(const locale& __loc);
// 27.6.2.4.2 Buffer management and positioning:
virtual basic_streambuf* setbuf(char_type* __s, streamsize __n);
virtual pos_type seekoff(off_type __off, ios_base::seekdir __way,
ios_base::openmode __which = ios_base::in | ios_base::out);
virtual pos_type seekpos(pos_type __sp,
ios_base::openmode __which = ios_base::in | ios_base::out);
virtual int sync();
// 27.6.2.4.3 Get area:
virtual streamsize showmanyc();
virtual streamsize xsgetn(char_type* __s, streamsize __n);
virtual int_type underflow();
virtual int_type uflow();
// 27.6.2.4.4 Putback:
virtual int_type pbackfail(int_type __c = traits_type::eof());
// 27.6.2.4.5 Put area:
virtual streamsize xsputn(const char_type* __s, streamsize __n);
virtual int_type overflow(int_type __c = traits_type::eof());
private:
locale __loc_;
char_type* __binp_;
char_type* __ninp_;
char_type* __einp_;
char_type* __bout_;
char_type* __nout_;
char_type* __eout_;
};
template <class _CharT, class _Traits>
basic_streambuf<_CharT, _Traits>::~basic_streambuf()
{
}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
locale
basic_streambuf<_CharT, _Traits>::pubimbue(const locale& __loc)
{
imbue(__loc);
locale __r = __loc_;
__loc_ = __loc;
return __r;
}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
locale
basic_streambuf<_CharT, _Traits>::getloc() const
{
return __loc_;
}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
basic_streambuf<_CharT, _Traits>*
basic_streambuf<_CharT, _Traits>::pubsetbuf(char_type* __s, streamsize __n)
{
return setbuf(__s, __n);
}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
typename basic_streambuf<_CharT, _Traits>::pos_type
basic_streambuf<_CharT, _Traits>::pubseekoff(off_type __off,
ios_base::seekdir __way,
ios_base::openmode __which)
{
return seekoff(__off, __way, __which);
}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
typename basic_streambuf<_CharT, _Traits>::pos_type
basic_streambuf<_CharT, _Traits>::pubseekpos(pos_type __sp,
ios_base::openmode __which)
{
return seekpos(__sp, __which);
}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
int
basic_streambuf<_CharT, _Traits>::pubsync()
{
return sync();
}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
streamsize
basic_streambuf<_CharT, _Traits>::in_avail()
{
if (__ninp_ < __einp_)
return static_cast<streamsize>(__einp_ - __ninp_);
return showmanyc();
}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
typename basic_streambuf<_CharT, _Traits>::int_type
basic_streambuf<_CharT, _Traits>::snextc()
{
if (sbumpc() == traits_type::eof())
return traits_type::eof();
return sgetc();
}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
typename basic_streambuf<_CharT, _Traits>::int_type
basic_streambuf<_CharT, _Traits>::sbumpc()
{
if (__ninp_ == __einp_)
return uflow();
return traits_type::to_int_type(*__ninp_++);
}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
typename basic_streambuf<_CharT, _Traits>::int_type
basic_streambuf<_CharT, _Traits>::sgetc()
{
if (__ninp_ == __einp_)
return underflow();
return traits_type::to_int_type(*__ninp_);
}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
streamsize
basic_streambuf<_CharT, _Traits>::sgetn(char_type* __s, streamsize __n)
{
return xsgetn(__s, __n);
}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
typename basic_streambuf<_CharT, _Traits>::int_type
basic_streambuf<_CharT, _Traits>::sputbackc(char_type __c)
{
if (__binp_ == __ninp_ || !traits_type::eq(__c, __ninp_[-1]))
return pbackfail(traits_type::to_int_type(__c));
return traits_type::to_int_type(*--__ninp_);
}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
typename basic_streambuf<_CharT, _Traits>::int_type
basic_streambuf<_CharT, _Traits>::sungetc()
{
if (__binp_ == __ninp_)
return pbackfail();
return traits_type::to_int_type(*--__ninp_);
}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
typename basic_streambuf<_CharT, _Traits>::int_type
basic_streambuf<_CharT, _Traits>::sputc(char_type __c)
{
if (__nout_ == __eout_)
return overflow(traits_type::to_int_type(__c));
*__nout_++ = __c;
return traits_type::to_int_type(__c);
}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
streamsize
basic_streambuf<_CharT, _Traits>::sputn(const char_type* __s, streamsize __n)
{
return xsputn(__s, __n);
}
template <class _CharT, class _Traits>
basic_streambuf<_CharT, _Traits>::basic_streambuf()
: __binp_(0),
__ninp_(0),
__einp_(0),
__bout_(0),
__nout_(0),
__eout_(0)
{
}
template <class _CharT, class _Traits>
basic_streambuf<_CharT, _Traits>::basic_streambuf(const basic_streambuf& __sb)
: __loc_(__sb.__loc_),
__binp_(__sb.__binp_),
__ninp_(__sb.__ninp_),
__einp_(__sb.__einp_),
__bout_(__sb.__bout_),
__nout_(__sb.__nout_),
__eout_(__sb.__eout_)
{
}
template <class _CharT, class _Traits>
basic_streambuf<_CharT, _Traits>&
basic_streambuf<_CharT, _Traits>::operator=(const basic_streambuf& __sb)
{
__loc_ = __sb.__loc_;
__binp_ = __sb.__binp_;
__ninp_ = __sb.__ninp_;
__einp_ = __sb.__einp_;
__bout_ = __sb.__bout_;
__nout_ = __sb.__nout_;
__eout_ = __sb.__eout_;
return *this;
}
template <class _CharT, class _Traits>
void
basic_streambuf<_CharT, _Traits>::swap(basic_streambuf& __sb)
{
_VSTD::swap(__loc_, __sb.__loc_);
_VSTD::swap(__binp_, __sb.__binp_);
_VSTD::swap(__ninp_, __sb.__ninp_);
_VSTD::swap(__einp_, __sb.__einp_);
_VSTD::swap(__bout_, __sb.__bout_);
_VSTD::swap(__nout_, __sb.__nout_);
_VSTD::swap(__eout_, __sb.__eout_);
}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
void
basic_streambuf<_CharT, _Traits>::gbump(int __n)
{
__ninp_ += __n;
}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
void
basic_streambuf<_CharT, _Traits>::setg(char_type* __gbeg, char_type* __gnext,
char_type* __gend)
{
__binp_ = __gbeg;
__ninp_ = __gnext;
__einp_ = __gend;
}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
void
basic_streambuf<_CharT, _Traits>::pbump(int __n)
{
__nout_ += __n;
}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
void
basic_streambuf<_CharT, _Traits>::setp(char_type* __pbeg, char_type* __pend)
{
__bout_ = __nout_ = __pbeg;
__eout_ = __pend;
}
template <class _CharT, class _Traits>
void
basic_streambuf<_CharT, _Traits>::imbue(const locale&)
{
}
template <class _CharT, class _Traits>
basic_streambuf<_CharT, _Traits>*
basic_streambuf<_CharT, _Traits>::setbuf(char_type*, streamsize)
{
return this;
}
template <class _CharT, class _Traits>
typename basic_streambuf<_CharT, _Traits>::pos_type
basic_streambuf<_CharT, _Traits>::seekoff(off_type, ios_base::seekdir,
ios_base::openmode)
{
return pos_type(off_type(-1));
}
template <class _CharT, class _Traits>
typename basic_streambuf<_CharT, _Traits>::pos_type
basic_streambuf<_CharT, _Traits>::seekpos(pos_type, ios_base::openmode)
{
return pos_type(off_type(-1));
}
template <class _CharT, class _Traits>
int
basic_streambuf<_CharT, _Traits>::sync()
{
return 0;
}
template <class _CharT, class _Traits>
streamsize
basic_streambuf<_CharT, _Traits>::showmanyc()
{
return 0;
}
template <class _CharT, class _Traits>
streamsize
basic_streambuf<_CharT, _Traits>::xsgetn(char_type* __s, streamsize __n)
{
const int_type __eof = traits_type::eof();
int_type __c;
streamsize __i = 0;
for (;__i < __n; ++__i, ++__s)
{
if (__ninp_ < __einp_)
*__s = *__ninp_++;
else if ((__c = uflow()) != __eof)
*__s = traits_type::to_char_type(__c);
else
break;
}
return __i;
}
template <class _CharT, class _Traits>
typename basic_streambuf<_CharT, _Traits>::int_type
basic_streambuf<_CharT, _Traits>::underflow()
{
return traits_type::eof();
}
template <class _CharT, class _Traits>
typename basic_streambuf<_CharT, _Traits>::int_type
basic_streambuf<_CharT, _Traits>::uflow()
{
if (underflow() == traits_type::eof())
return traits_type::eof();
return traits_type::to_int_type(*__ninp_++);
}
template <class _CharT, class _Traits>
typename basic_streambuf<_CharT, _Traits>::int_type
basic_streambuf<_CharT, _Traits>::pbackfail(int_type)
{
return traits_type::eof();
}
template <class _CharT, class _Traits>
streamsize
basic_streambuf<_CharT, _Traits>::xsputn(const char_type* __s, streamsize __n)
{
streamsize __i = 0;
int_type __eof = traits_type::eof();
for (; __i < __n; ++__s, ++__i)
{
if (__nout_ < __eout_)
*__nout_++ = *__s;
else if (overflow(traits_type::to_int_type(*__s)) == __eof)
break;
}
return __i;
}
template <class _CharT, class _Traits>
typename basic_streambuf<_CharT, _Traits>::int_type
basic_streambuf<_CharT, _Traits>::overflow(int_type)
{
return traits_type::eof();
}
_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_TYPE_VIS basic_streambuf<char>)
_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_TYPE_VIS basic_streambuf<wchar_t>)
_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_TYPE_VIS basic_ios<char>)
_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_TYPE_VIS basic_ios<wchar_t>)
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_STEAMBUF
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