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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
- */
- // Not supported in SGX.
- #include <__config>
- #if !defined(_LIBCPP_SGX_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;
- while(__i < __n)
- {
- if (__ninp_ < __einp_)
- {
- const streamsize __len = _VSTD::min(__einp_ - __ninp_, __n - __i);
- traits_type::copy(__s, __ninp_, __len);
- __s += __len;
- __i += __len;
- this->gbump(__len);
- }
- else if ((__c = uflow()) != __eof)
- {
- *__s = traits_type::to_char_type(__c);
- ++__s;
- ++__i;
- }
- 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();
- while( __i < __n)
- {
- if (__nout_ >= __eout_)
- {
- if (overflow(traits_type::to_int_type(*__s)) == __eof)
- break;
- ++__s;
- ++__i;
- }
- else
- {
- streamsize __chunk_size = _VSTD::min(__eout_ - __nout_, __n - __i);
- traits_type::copy(__nout_, __s, __chunk_size);
- __nout_ += __chunk_size;
- __s += __chunk_size;
- __i += __chunk_size;
- }
- }
- 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 // !defined(_LIBCPP_SGX_CONFIG)
- #endif // _LIBCPP_STEAMBUF
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