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Diffstat (limited to 'data/iphoneos-sdk/v1/fstream')
-rwxr-xr-x | data/iphoneos-sdk/v1/fstream | 1484 |
1 files changed, 1484 insertions, 0 deletions
diff --git a/data/iphoneos-sdk/v1/fstream b/data/iphoneos-sdk/v1/fstream new file mode 100755 index 000000000..f57908c8d --- /dev/null +++ b/data/iphoneos-sdk/v1/fstream @@ -0,0 +1,1484 @@ +// -*- C++ -*- +//===------------------------- fstream ------------------------------------===// +// +// 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_FSTREAM +#define _LIBCPP_FSTREAM + +/* + fstream synopsis + +template <class charT, class traits = char_traits<charT> > +class basic_filebuf + : public basic_streambuf<charT, traits> +{ +public: + 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; + + // 27.9.1.2 Constructors/destructor: + basic_filebuf(); + basic_filebuf(basic_filebuf&& rhs); + virtual ~basic_filebuf(); + + // 27.9.1.3 Assign/swap: + basic_filebuf& operator=(basic_filebuf&& rhs); + void swap(basic_filebuf& rhs); + + // 27.9.1.4 Members: + bool is_open() const; + basic_filebuf* open(const char* s, ios_base::openmode mode); + basic_filebuf* open(const string& s, ios_base::openmode mode); + basic_filebuf* close(); + +protected: + // 27.9.1.5 Overridden virtual functions: + virtual streamsize showmanyc(); + virtual int_type underflow(); + virtual int_type uflow(); + virtual int_type pbackfail(int_type c = traits_type::eof()); + virtual int_type overflow (int_type c = traits_type::eof()); + virtual basic_streambuf<char_type, traits_type>* 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(); + virtual void imbue(const locale& loc); +}; + +template <class charT, class traits> + void + swap(basic_filebuf<charT, traits>& x, basic_filebuf<charT, traits>& y); + +typedef basic_filebuf<char> filebuf; +typedef basic_filebuf<wchar_t> wfilebuf; + +template <class charT, class traits = char_traits<charT> > +class basic_ifstream + : public basic_istream<charT,traits> +{ +public: + 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; + + basic_ifstream(); + explicit basic_ifstream(const char* s, ios_base::openmode mode = ios_base::in); + explicit basic_ifstream(const string& s, ios_base::openmode mode = ios_base::in); + basic_ifstream(basic_ifstream&& rhs); + + basic_ifstream& operator=(basic_ifstream&& rhs); + void swap(basic_ifstream& rhs); + + basic_filebuf<char_type, traits_type>* rdbuf() const; + bool is_open() const; + void open(const char* s, ios_base::openmode mode = ios_base::in); + void open(const string& s, ios_base::openmode mode = ios_base::in); + void close(); +}; + +template <class charT, class traits> + void + swap(basic_ifstream<charT, traits>& x, basic_ifstream<charT, traits>& y); + +typedef basic_ifstream<char> ifstream; +typedef basic_ifstream<wchar_t> wifstream; + +template <class charT, class traits = char_traits<charT> > +class basic_ofstream + : public basic_ostream<charT,traits> +{ +public: + 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; + + basic_ofstream(); + explicit basic_ofstream(const char* s, ios_base::openmode mode = ios_base::out); + explicit basic_ofstream(const string& s, ios_base::openmode mode = ios_base::out); + basic_ofstream(basic_ofstream&& rhs); + + basic_ofstream& operator=(basic_ofstream&& rhs); + void swap(basic_ofstream& rhs); + + basic_filebuf<char_type, traits_type>* rdbuf() const; + bool is_open() const; + void open(const char* s, ios_base::openmode mode = ios_base::out); + void open(const string& s, ios_base::openmode mode = ios_base::out); + void close(); +}; + +template <class charT, class traits> + void + swap(basic_ofstream<charT, traits>& x, basic_ofstream<charT, traits>& y); + +typedef basic_ofstream<char> ofstream; +typedef basic_ofstream<wchar_t> wofstream; + +template <class charT, class traits=char_traits<charT> > +class basic_fstream + : public basic_iostream<charT,traits> +{ +public: + 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; + + basic_fstream(); + explicit basic_fstream(const char* s, ios_base::openmode mode = ios_base::in|ios_base::out); + explicit basic_fstream(const string& s, ios_base::openmode mode = ios_base::in|ios_base::out); + basic_fstream(basic_fstream&& rhs); + + basic_fstream& operator=(basic_fstream&& rhs); + void swap(basic_fstream& rhs); + + basic_filebuf<char_type, traits_type>* rdbuf() const; + bool is_open() const; + void open(const char* s, ios_base::openmode mode = ios_base::in|ios_base::out); + void open(const string& s, ios_base::openmode mode = ios_base::in|ios_base::out); + void close(); +}; + +template <class charT, class traits> + void swap(basic_fstream<charT, traits>& x, basic_fstream<charT, traits>& y); + +typedef basic_fstream<char> fstream; +typedef basic_fstream<wchar_t> wfstream; + +} // std + +*/ + +#include <__config> +#include <ostream> +#include <istream> +#include <__locale> +#include <cstdio> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +#pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + + +_LIBCPP_BEGIN_NAMESPACE_STD + +template <class _CharT, class _Traits> +class _LIBCPP_TEMPLATE_VIS basic_filebuf + : public basic_streambuf<_CharT, _Traits> +{ +public: + 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; + typedef typename traits_type::state_type state_type; + + // 27.9.1.2 Constructors/destructor: + basic_filebuf(); +#ifndef _LIBCPP_CXX03_LANG + basic_filebuf(basic_filebuf&& __rhs); +#endif + virtual ~basic_filebuf(); + + // 27.9.1.3 Assign/swap: +#ifndef _LIBCPP_CXX03_LANG + _LIBCPP_INLINE_VISIBILITY + basic_filebuf& operator=(basic_filebuf&& __rhs); +#endif + void swap(basic_filebuf& __rhs); + + // 27.9.1.4 Members: + _LIBCPP_INLINE_VISIBILITY + bool is_open() const; +#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE + basic_filebuf* open(const char* __s, ios_base::openmode __mode); + _LIBCPP_INLINE_VISIBILITY + basic_filebuf* open(const string& __s, ios_base::openmode __mode); +#endif + basic_filebuf* close(); + +protected: + // 27.9.1.5 Overridden virtual functions: + virtual int_type underflow(); + virtual int_type pbackfail(int_type __c = traits_type::eof()); + virtual int_type overflow (int_type __c = traits_type::eof()); + virtual basic_streambuf<char_type, traits_type>* setbuf(char_type* __s, streamsize __n); + virtual pos_type seekoff(off_type __off, ios_base::seekdir __way, + ios_base::openmode __wch = ios_base::in | ios_base::out); + virtual pos_type seekpos(pos_type __sp, + ios_base::openmode __wch = ios_base::in | ios_base::out); + virtual int sync(); + virtual void imbue(const locale& __loc); + +private: + char* __extbuf_; + const char* __extbufnext_; + const char* __extbufend_; + char __extbuf_min_[8]; + size_t __ebs_; + char_type* __intbuf_; + size_t __ibs_; + FILE* __file_; + const codecvt<char_type, char, state_type>* __cv_; + state_type __st_; + state_type __st_last_; + ios_base::openmode __om_; + ios_base::openmode __cm_; + bool __owns_eb_; + bool __owns_ib_; + bool __always_noconv_; + + bool __read_mode(); + void __write_mode(); +}; + +template <class _CharT, class _Traits> +basic_filebuf<_CharT, _Traits>::basic_filebuf() + : __extbuf_(0), + __extbufnext_(0), + __extbufend_(0), + __ebs_(0), + __intbuf_(0), + __ibs_(0), + __file_(0), + __cv_(nullptr), + __st_(), + __st_last_(), + __om_(0), + __cm_(0), + __owns_eb_(false), + __owns_ib_(false), + __always_noconv_(false) +{ + if (has_facet<codecvt<char_type, char, state_type> >(this->getloc())) + { + __cv_ = &use_facet<codecvt<char_type, char, state_type> >(this->getloc()); + __always_noconv_ = __cv_->always_noconv(); + } + setbuf(0, 4096); +} + +#ifndef _LIBCPP_CXX03_LANG + +template <class _CharT, class _Traits> +basic_filebuf<_CharT, _Traits>::basic_filebuf(basic_filebuf&& __rhs) + : basic_streambuf<_CharT, _Traits>(__rhs) +{ + if (__rhs.__extbuf_ == __rhs.__extbuf_min_) + { + __extbuf_ = __extbuf_min_; + __extbufnext_ = __extbuf_ + (__rhs.__extbufnext_ - __rhs.__extbuf_); + __extbufend_ = __extbuf_ + (__rhs.__extbufend_ - __rhs.__extbuf_); + } + else + { + __extbuf_ = __rhs.__extbuf_; + __extbufnext_ = __rhs.__extbufnext_; + __extbufend_ = __rhs.__extbufend_; + } + __ebs_ = __rhs.__ebs_; + __intbuf_ = __rhs.__intbuf_; + __ibs_ = __rhs.__ibs_; + __file_ = __rhs.__file_; + __cv_ = __rhs.__cv_; + __st_ = __rhs.__st_; + __st_last_ = __rhs.__st_last_; + __om_ = __rhs.__om_; + __cm_ = __rhs.__cm_; + __owns_eb_ = __rhs.__owns_eb_; + __owns_ib_ = __rhs.__owns_ib_; + __always_noconv_ = __rhs.__always_noconv_; + if (__rhs.pbase()) + { + if (__rhs.pbase() == __rhs.__intbuf_) + this->setp(__intbuf_, __intbuf_ + (__rhs. epptr() - __rhs.pbase())); + else + this->setp((char_type*)__extbuf_, + (char_type*)__extbuf_ + (__rhs. epptr() - __rhs.pbase())); + this->__pbump(__rhs. pptr() - __rhs.pbase()); + } + else if (__rhs.eback()) + { + if (__rhs.eback() == __rhs.__intbuf_) + this->setg(__intbuf_, __intbuf_ + (__rhs.gptr() - __rhs.eback()), + __intbuf_ + (__rhs.egptr() - __rhs.eback())); + else + this->setg((char_type*)__extbuf_, + (char_type*)__extbuf_ + (__rhs.gptr() - __rhs.eback()), + (char_type*)__extbuf_ + (__rhs.egptr() - __rhs.eback())); + } + __rhs.__extbuf_ = 0; + __rhs.__extbufnext_ = 0; + __rhs.__extbufend_ = 0; + __rhs.__ebs_ = 0; + __rhs.__intbuf_ = 0; + __rhs.__ibs_ = 0; + __rhs.__file_ = 0; + __rhs.__st_ = state_type(); + __rhs.__st_last_ = state_type(); + __rhs.__om_ = 0; + __rhs.__cm_ = 0; + __rhs.__owns_eb_ = false; + __rhs.__owns_ib_ = false; + __rhs.setg(0, 0, 0); + __rhs.setp(0, 0); +} + +template <class _CharT, class _Traits> +inline +basic_filebuf<_CharT, _Traits>& +basic_filebuf<_CharT, _Traits>::operator=(basic_filebuf&& __rhs) +{ + close(); + swap(__rhs); + return *this; +} + +#endif // _LIBCPP_CXX03_LANG + +template <class _CharT, class _Traits> +basic_filebuf<_CharT, _Traits>::~basic_filebuf() +{ +#ifndef _LIBCPP_NO_EXCEPTIONS + try + { +#endif // _LIBCPP_NO_EXCEPTIONS + close(); +#ifndef _LIBCPP_NO_EXCEPTIONS + } + catch (...) + { + } +#endif // _LIBCPP_NO_EXCEPTIONS + if (__owns_eb_) + delete [] __extbuf_; + if (__owns_ib_) + delete [] __intbuf_; +} + +template <class _CharT, class _Traits> +void +basic_filebuf<_CharT, _Traits>::swap(basic_filebuf& __rhs) +{ + basic_streambuf<char_type, traits_type>::swap(__rhs); + if (__extbuf_ != __extbuf_min_ && __rhs.__extbuf_ != __rhs.__extbuf_min_) + { + _VSTD::swap(__extbuf_, __rhs.__extbuf_); + _VSTD::swap(__extbufnext_, __rhs.__extbufnext_); + _VSTD::swap(__extbufend_, __rhs.__extbufend_); + } + else + { + ptrdiff_t __ln = __extbufnext_ - __extbuf_; + ptrdiff_t __le = __extbufend_ - __extbuf_; + ptrdiff_t __rn = __rhs.__extbufnext_ - __rhs.__extbuf_; + ptrdiff_t __re = __rhs.__extbufend_ - __rhs.__extbuf_; + if (__extbuf_ == __extbuf_min_ && __rhs.__extbuf_ != __rhs.__extbuf_min_) + { + __extbuf_ = __rhs.__extbuf_; + __rhs.__extbuf_ = __rhs.__extbuf_min_; + } + else if (__extbuf_ != __extbuf_min_ && __rhs.__extbuf_ == __rhs.__extbuf_min_) + { + __rhs.__extbuf_ = __extbuf_; + __extbuf_ = __extbuf_min_; + } + __extbufnext_ = __extbuf_ + __rn; + __extbufend_ = __extbuf_ + __re; + __rhs.__extbufnext_ = __rhs.__extbuf_ + __ln; + __rhs.__extbufend_ = __rhs.__extbuf_ + __le; + } + _VSTD::swap(__ebs_, __rhs.__ebs_); + _VSTD::swap(__intbuf_, __rhs.__intbuf_); + _VSTD::swap(__ibs_, __rhs.__ibs_); + _VSTD::swap(__file_, __rhs.__file_); + _VSTD::swap(__cv_, __rhs.__cv_); + _VSTD::swap(__st_, __rhs.__st_); + _VSTD::swap(__st_last_, __rhs.__st_last_); + _VSTD::swap(__om_, __rhs.__om_); + _VSTD::swap(__cm_, __rhs.__cm_); + _VSTD::swap(__owns_eb_, __rhs.__owns_eb_); + _VSTD::swap(__owns_ib_, __rhs.__owns_ib_); + _VSTD::swap(__always_noconv_, __rhs.__always_noconv_); + if (this->eback() == (char_type*)__rhs.__extbuf_min_) + { + ptrdiff_t __n = this->gptr() - this->eback(); + ptrdiff_t __e = this->egptr() - this->eback(); + this->setg((char_type*)__extbuf_min_, + (char_type*)__extbuf_min_ + __n, + (char_type*)__extbuf_min_ + __e); + } + else if (this->pbase() == (char_type*)__rhs.__extbuf_min_) + { + ptrdiff_t __n = this->pptr() - this->pbase(); + ptrdiff_t __e = this->epptr() - this->pbase(); + this->setp((char_type*)__extbuf_min_, + (char_type*)__extbuf_min_ + __e); + this->__pbump(__n); + } + if (__rhs.eback() == (char_type*)__extbuf_min_) + { + ptrdiff_t __n = __rhs.gptr() - __rhs.eback(); + ptrdiff_t __e = __rhs.egptr() - __rhs.eback(); + __rhs.setg((char_type*)__rhs.__extbuf_min_, + (char_type*)__rhs.__extbuf_min_ + __n, + (char_type*)__rhs.__extbuf_min_ + __e); + } + else if (__rhs.pbase() == (char_type*)__extbuf_min_) + { + ptrdiff_t __n = __rhs.pptr() - __rhs.pbase(); + ptrdiff_t __e = __rhs.epptr() - __rhs.pbase(); + __rhs.setp((char_type*)__rhs.__extbuf_min_, + (char_type*)__rhs.__extbuf_min_ + __e); + __rhs.__pbump(__n); + } +} + +template <class _CharT, class _Traits> +inline _LIBCPP_INLINE_VISIBILITY +void +swap(basic_filebuf<_CharT, _Traits>& __x, basic_filebuf<_CharT, _Traits>& __y) +{ + __x.swap(__y); +} + +template <class _CharT, class _Traits> +inline +bool +basic_filebuf<_CharT, _Traits>::is_open() const +{ + return __file_ != 0; +} + +#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE +template <class _CharT, class _Traits> +basic_filebuf<_CharT, _Traits>* +basic_filebuf<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode) +{ + basic_filebuf<_CharT, _Traits>* __rt = 0; + if (__file_ == 0) + { + __rt = this; + const char* __mdstr; + switch (__mode & ~ios_base::ate) + { + case ios_base::out: + case ios_base::out | ios_base::trunc: + __mdstr = "w"; + break; + case ios_base::out | ios_base::app: + case ios_base::app: + __mdstr = "a"; + break; + case ios_base::in: + __mdstr = "r"; + break; + case ios_base::in | ios_base::out: + __mdstr = "r+"; + break; + case ios_base::in | ios_base::out | ios_base::trunc: + __mdstr = "w+"; + break; + case ios_base::in | ios_base::out | ios_base::app: + case ios_base::in | ios_base::app: + __mdstr = "a+"; + break; + case ios_base::out | ios_base::binary: + case ios_base::out | ios_base::trunc | ios_base::binary: + __mdstr = "wb"; + break; + case ios_base::out | ios_base::app | ios_base::binary: + case ios_base::app | ios_base::binary: + __mdstr = "ab"; + break; + case ios_base::in | ios_base::binary: + __mdstr = "rb"; + break; + case ios_base::in | ios_base::out | ios_base::binary: + __mdstr = "r+b"; + break; + case ios_base::in | ios_base::out | ios_base::trunc | ios_base::binary: + __mdstr = "w+b"; + break; + case ios_base::in | ios_base::out | ios_base::app | ios_base::binary: + case ios_base::in | ios_base::app | ios_base::binary: + __mdstr = "a+b"; + break; + default: + __rt = 0; + break; + } + if (__rt) + { + __file_ = fopen(__s, __mdstr); + if (__file_) + { + __om_ = __mode; + if (__mode & ios_base::ate) + { + if (fseek(__file_, 0, SEEK_END)) + { + fclose(__file_); + __file_ = 0; + __rt = 0; + } + } + } + else + __rt = 0; + } + } + return __rt; +} + +template <class _CharT, class _Traits> +inline +basic_filebuf<_CharT, _Traits>* +basic_filebuf<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode) +{ + return open(__s.c_str(), __mode); +} +#endif + +template <class _CharT, class _Traits> +basic_filebuf<_CharT, _Traits>* +basic_filebuf<_CharT, _Traits>::close() +{ + basic_filebuf<_CharT, _Traits>* __rt = 0; + if (__file_) + { + __rt = this; + unique_ptr<FILE, int(*)(FILE*)> __h(__file_, fclose); + if (sync()) + __rt = 0; + if (fclose(__h.release()) == 0) + __file_ = 0; + else + __rt = 0; + } + return __rt; +} + +template <class _CharT, class _Traits> +typename basic_filebuf<_CharT, _Traits>::int_type +basic_filebuf<_CharT, _Traits>::underflow() +{ + if (__file_ == 0) + return traits_type::eof(); + bool __initial = __read_mode(); + char_type __1buf; + if (this->gptr() == 0) + this->setg(&__1buf, &__1buf+1, &__1buf+1); + const size_t __unget_sz = __initial ? 0 : min<size_t>((this->egptr() - this->eback()) / 2, 4); + int_type __c = traits_type::eof(); + if (this->gptr() == this->egptr()) + { + memmove(this->eback(), this->egptr() - __unget_sz, __unget_sz * sizeof(char_type)); + if (__always_noconv_) + { + size_t __nmemb = static_cast<size_t>(this->egptr() - this->eback() - __unget_sz); + __nmemb = fread(this->eback() + __unget_sz, 1, __nmemb, __file_); + if (__nmemb != 0) + { + this->setg(this->eback(), + this->eback() + __unget_sz, + this->eback() + __unget_sz + __nmemb); + __c = traits_type::to_int_type(*this->gptr()); + } + } + else + { + _LIBCPP_ASSERT ( !(__extbufnext_ == NULL && (__extbufend_ != __extbufnext_)), "underflow moving from NULL" ); + if (__extbufend_ != __extbufnext_) + memmove(__extbuf_, __extbufnext_, __extbufend_ - __extbufnext_); + __extbufnext_ = __extbuf_ + (__extbufend_ - __extbufnext_); + __extbufend_ = __extbuf_ + (__extbuf_ == __extbuf_min_ ? sizeof(__extbuf_min_) : __ebs_); + size_t __nmemb = _VSTD::min(static_cast<size_t>(__ibs_ - __unget_sz), + static_cast<size_t>(__extbufend_ - __extbufnext_)); + codecvt_base::result __r; + __st_last_ = __st_; + size_t __nr = fread((void*) const_cast<char *>(__extbufnext_), 1, __nmemb, __file_); + if (__nr != 0) + { + if (!__cv_) + __throw_bad_cast(); + + __extbufend_ = __extbufnext_ + __nr; + char_type* __inext; + __r = __cv_->in(__st_, __extbuf_, __extbufend_, __extbufnext_, + this->eback() + __unget_sz, + this->eback() + __ibs_, __inext); + if (__r == codecvt_base::noconv) + { + this->setg((char_type*)__extbuf_, (char_type*)__extbuf_, + (char_type*)const_cast<char *>(__extbufend_)); + __c = traits_type::to_int_type(*this->gptr()); + } + else if (__inext != this->eback() + __unget_sz) + { + this->setg(this->eback(), this->eback() + __unget_sz, __inext); + __c = traits_type::to_int_type(*this->gptr()); + } + } + } + } + else + __c = traits_type::to_int_type(*this->gptr()); + if (this->eback() == &__1buf) + this->setg(0, 0, 0); + return __c; +} + +template <class _CharT, class _Traits> +typename basic_filebuf<_CharT, _Traits>::int_type +basic_filebuf<_CharT, _Traits>::pbackfail(int_type __c) +{ + if (__file_ && this->eback() < this->gptr()) + { + if (traits_type::eq_int_type(__c, traits_type::eof())) + { + this->gbump(-1); + return traits_type::not_eof(__c); + } + if ((__om_ & ios_base::out) || + traits_type::eq(traits_type::to_char_type(__c), this->gptr()[-1])) + { + this->gbump(-1); + *this->gptr() = traits_type::to_char_type(__c); + return __c; + } + } + return traits_type::eof(); +} + +template <class _CharT, class _Traits> +typename basic_filebuf<_CharT, _Traits>::int_type +basic_filebuf<_CharT, _Traits>::overflow(int_type __c) +{ + if (__file_ == 0) + return traits_type::eof(); + __write_mode(); + char_type __1buf; + char_type* __pb_save = this->pbase(); + char_type* __epb_save = this->epptr(); + if (!traits_type::eq_int_type(__c, traits_type::eof())) + { + if (this->pptr() == 0) + this->setp(&__1buf, &__1buf+1); + *this->pptr() = traits_type::to_char_type(__c); + this->pbump(1); + } + if (this->pptr() != this->pbase()) + { + if (__always_noconv_) + { + size_t __nmemb = static_cast<size_t>(this->pptr() - this->pbase()); + if (fwrite(this->pbase(), sizeof(char_type), __nmemb, __file_) != __nmemb) + return traits_type::eof(); + } + else + { + char* __extbe = __extbuf_; + codecvt_base::result __r; + do + { + if (!__cv_) + __throw_bad_cast(); + + const char_type* __e; + __r = __cv_->out(__st_, this->pbase(), this->pptr(), __e, + __extbuf_, __extbuf_ + __ebs_, __extbe); + if (__e == this->pbase()) + return traits_type::eof(); + if (__r == codecvt_base::noconv) + { + size_t __nmemb = static_cast<size_t>(this->pptr() - this->pbase()); + if (fwrite(this->pbase(), 1, __nmemb, __file_) != __nmemb) + return traits_type::eof(); + } + else if (__r == codecvt_base::ok || __r == codecvt_base::partial) + { + size_t __nmemb = static_cast<size_t>(__extbe - __extbuf_); + if (fwrite(__extbuf_, 1, __nmemb, __file_) != __nmemb) + return traits_type::eof(); + if (__r == codecvt_base::partial) + { + this->setp(const_cast<char_type*>(__e), this->pptr()); + this->__pbump(this->epptr() - this->pbase()); + } + } + else + return traits_type::eof(); + } while (__r == codecvt_base::partial); + } + this->setp(__pb_save, __epb_save); + } + return traits_type::not_eof(__c); +} + +template <class _CharT, class _Traits> +basic_streambuf<_CharT, _Traits>* +basic_filebuf<_CharT, _Traits>::setbuf(char_type* __s, streamsize __n) +{ + this->setg(0, 0, 0); + this->setp(0, 0); + if (__owns_eb_) + delete [] __extbuf_; + if (__owns_ib_) + delete [] __intbuf_; + __ebs_ = __n; + if (__ebs_ > sizeof(__extbuf_min_)) + { + if (__always_noconv_ && __s) + { + __extbuf_ = (char*)__s; + __owns_eb_ = false; + } + else + { + __extbuf_ = new char[__ebs_]; + __owns_eb_ = true; + } + } + else + { + __extbuf_ = __extbuf_min_; + __ebs_ = sizeof(__extbuf_min_); + __owns_eb_ = false; + } + if (!__always_noconv_) + { + __ibs_ = max<streamsize>(__n, sizeof(__extbuf_min_)); + if (__s && __ibs_ >= sizeof(__extbuf_min_)) + { + __intbuf_ = __s; + __owns_ib_ = false; + } + else + { + __intbuf_ = new char_type[__ibs_]; + __owns_ib_ = true; + } + } + else + { + __ibs_ = 0; + __intbuf_ = 0; + __owns_ib_ = false; + } + return this; +} + +template <class _CharT, class _Traits> +typename basic_filebuf<_CharT, _Traits>::pos_type +basic_filebuf<_CharT, _Traits>::seekoff(off_type __off, ios_base::seekdir __way, + ios_base::openmode) +{ + if (!__cv_) + __throw_bad_cast(); + + int __width = __cv_->encoding(); + if (__file_ == 0 || (__width <= 0 && __off != 0) || sync()) + return pos_type(off_type(-1)); + // __width > 0 || __off == 0 + int __whence; + switch (__way) + { + case ios_base::beg: + __whence = SEEK_SET; + break; + case ios_base::cur: + __whence = SEEK_CUR; + break; + case ios_base::end: + __whence = SEEK_END; + break; + default: + return pos_type(off_type(-1)); + } +#if defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) + if (fseek(__file_, __width > 0 ? __width * __off : 0, __whence)) + return pos_type(off_type(-1)); + pos_type __r = ftell(__file_); +#else + if (fseeko(__file_, __width > 0 ? __width * __off : 0, __whence)) + return pos_type(off_type(-1)); + pos_type __r = ftello(__file_); +#endif + __r.state(__st_); + return __r; +} + +template <class _CharT, class _Traits> +typename basic_filebuf<_CharT, _Traits>::pos_type +basic_filebuf<_CharT, _Traits>::seekpos(pos_type __sp, ios_base::openmode) +{ + if (__file_ == 0 || sync()) + return pos_type(off_type(-1)); +#if defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) + if (fseek(__file_, __sp, SEEK_SET)) + return pos_type(off_type(-1)); +#else + if (fseeko(__file_, __sp, SEEK_SET)) + return pos_type(off_type(-1)); +#endif + __st_ = __sp.state(); + return __sp; +} + +template <class _CharT, class _Traits> +int +basic_filebuf<_CharT, _Traits>::sync() +{ + if (__file_ == 0) + return 0; + if (!__cv_) + __throw_bad_cast(); + + if (__cm_ & ios_base::out) + { + if (this->pptr() != this->pbase()) + if (overflow() == traits_type::eof()) + return -1; + codecvt_base::result __r; + do + { + char* __extbe; + __r = __cv_->unshift(__st_, __extbuf_, __extbuf_ + __ebs_, __extbe); + size_t __nmemb = static_cast<size_t>(__extbe - __extbuf_); + if (fwrite(__extbuf_, 1, __nmemb, __file_) != __nmemb) + return -1; + } while (__r == codecvt_base::partial); + if (__r == codecvt_base::error) + return -1; + if (fflush(__file_)) + return -1; + } + else if (__cm_ & ios_base::in) + { + off_type __c; + state_type __state = __st_last_; + bool __update_st = false; + if (__always_noconv_) + __c = this->egptr() - this->gptr(); + else + { + int __width = __cv_->encoding(); + __c = __extbufend_ - __extbufnext_; + if (__width > 0) + __c += __width * (this->egptr() - this->gptr()); + else + { + if (this->gptr() != this->egptr()) + { + const int __off = __cv_->length(__state, __extbuf_, + __extbufnext_, + this->gptr() - this->eback()); + __c += __extbufnext_ - __extbuf_ - __off; + __update_st = true; + } + } + } +#if defined(_LIBCPP_HAS_NO_OFF_T_FUNCTIONS) + if (fseek(__file_, -__c, SEEK_CUR)) + return -1; +#else + if (fseeko(__file_, -__c, SEEK_CUR)) + return -1; +#endif + if (__update_st) + __st_ = __state; + __extbufnext_ = __extbufend_ = __extbuf_; + this->setg(0, 0, 0); + __cm_ = 0; + } + return 0; +} + +template <class _CharT, class _Traits> +void +basic_filebuf<_CharT, _Traits>::imbue(const locale& __loc) +{ + sync(); + __cv_ = &use_facet<codecvt<char_type, char, state_type> >(__loc); + bool __old_anc = __always_noconv_; + __always_noconv_ = __cv_->always_noconv(); + if (__old_anc != __always_noconv_) + { + this->setg(0, 0, 0); + this->setp(0, 0); + // invariant, char_type is char, else we couldn't get here + if (__always_noconv_) // need to dump __intbuf_ + { + if (__owns_eb_) + delete [] __extbuf_; + __owns_eb_ = __owns_ib_; + __ebs_ = __ibs_; + __extbuf_ = (char*)__intbuf_; + __ibs_ = 0; + __intbuf_ = 0; + __owns_ib_ = false; + } + else // need to obtain an __intbuf_. + { // If __extbuf_ is user-supplied, use it, else new __intbuf_ + if (!__owns_eb_ && __extbuf_ != __extbuf_min_) + { + __ibs_ = __ebs_; + __intbuf_ = (char_type*)__extbuf_; + __owns_ib_ = false; + __extbuf_ = new char[__ebs_]; + __owns_eb_ = true; + } + else + { + __ibs_ = __ebs_; + __intbuf_ = new char_type[__ibs_]; + __owns_ib_ = true; + } + } + } +} + +template <class _CharT, class _Traits> +bool +basic_filebuf<_CharT, _Traits>::__read_mode() +{ + if (!(__cm_ & ios_base::in)) + { + this->setp(0, 0); + if (__always_noconv_) + this->setg((char_type*)__extbuf_, + (char_type*)__extbuf_ + __ebs_, + (char_type*)__extbuf_ + __ebs_); + else + this->setg(__intbuf_, __intbuf_ + __ibs_, __intbuf_ + __ibs_); + __cm_ = ios_base::in; + return true; + } + return false; +} + +template <class _CharT, class _Traits> +void +basic_filebuf<_CharT, _Traits>::__write_mode() +{ + if (!(__cm_ & ios_base::out)) + { + this->setg(0, 0, 0); + if (__ebs_ > sizeof(__extbuf_min_)) + { + if (__always_noconv_) + this->setp((char_type*)__extbuf_, + (char_type*)__extbuf_ + (__ebs_ - 1)); + else + this->setp(__intbuf_, __intbuf_ + (__ibs_ - 1)); + } + else + this->setp(0, 0); + __cm_ = ios_base::out; + } +} + +// basic_ifstream + +template <class _CharT, class _Traits> +class _LIBCPP_TEMPLATE_VIS basic_ifstream + : public basic_istream<_CharT, _Traits> +{ +public: + 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; + + _LIBCPP_INLINE_VISIBILITY + basic_ifstream(); +#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE + _LIBCPP_INLINE_VISIBILITY + explicit basic_ifstream(const char* __s, ios_base::openmode __mode = ios_base::in); + _LIBCPP_INLINE_VISIBILITY + explicit basic_ifstream(const string& __s, ios_base::openmode __mode = ios_base::in); +#endif +#ifndef _LIBCPP_CXX03_LANG + _LIBCPP_INLINE_VISIBILITY + basic_ifstream(basic_ifstream&& __rhs); + + _LIBCPP_INLINE_VISIBILITY + basic_ifstream& operator=(basic_ifstream&& __rhs); +#endif + _LIBCPP_INLINE_VISIBILITY + void swap(basic_ifstream& __rhs); + + _LIBCPP_INLINE_VISIBILITY + basic_filebuf<char_type, traits_type>* rdbuf() const; + _LIBCPP_INLINE_VISIBILITY + bool is_open() const; +#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE + void open(const char* __s, ios_base::openmode __mode = ios_base::in); + void open(const string& __s, ios_base::openmode __mode = ios_base::in); +#endif + _LIBCPP_INLINE_VISIBILITY + void close(); + +private: + basic_filebuf<char_type, traits_type> __sb_; +}; + +template <class _CharT, class _Traits> +inline +basic_ifstream<_CharT, _Traits>::basic_ifstream() + : basic_istream<char_type, traits_type>(&__sb_) +{ +} + +#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE +template <class _CharT, class _Traits> +inline +basic_ifstream<_CharT, _Traits>::basic_ifstream(const char* __s, ios_base::openmode __mode) + : basic_istream<char_type, traits_type>(&__sb_) +{ + if (__sb_.open(__s, __mode | ios_base::in) == 0) + this->setstate(ios_base::failbit); +} + +template <class _CharT, class _Traits> +inline +basic_ifstream<_CharT, _Traits>::basic_ifstream(const string& __s, ios_base::openmode __mode) + : basic_istream<char_type, traits_type>(&__sb_) +{ + if (__sb_.open(__s, __mode | ios_base::in) == 0) + this->setstate(ios_base::failbit); +} +#endif + +#ifndef _LIBCPP_CXX03_LANG + +template <class _CharT, class _Traits> +inline +basic_ifstream<_CharT, _Traits>::basic_ifstream(basic_ifstream&& __rhs) + : basic_istream<char_type, traits_type>(_VSTD::move(__rhs)), + __sb_(_VSTD::move(__rhs.__sb_)) +{ + this->set_rdbuf(&__sb_); +} + +template <class _CharT, class _Traits> +inline +basic_ifstream<_CharT, _Traits>& +basic_ifstream<_CharT, _Traits>::operator=(basic_ifstream&& __rhs) +{ + basic_istream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); + __sb_ = _VSTD::move(__rhs.__sb_); + return *this; +} + +#endif // _LIBCPP_CXX03_LANG + +template <class _CharT, class _Traits> +inline +void +basic_ifstream<_CharT, _Traits>::swap(basic_ifstream& __rhs) +{ + basic_istream<char_type, traits_type>::swap(__rhs); + __sb_.swap(__rhs.__sb_); +} + +template <class _CharT, class _Traits> +inline _LIBCPP_INLINE_VISIBILITY +void +swap(basic_ifstream<_CharT, _Traits>& __x, basic_ifstream<_CharT, _Traits>& __y) +{ + __x.swap(__y); +} + +template <class _CharT, class _Traits> +inline +basic_filebuf<_CharT, _Traits>* +basic_ifstream<_CharT, _Traits>::rdbuf() const +{ + return const_cast<basic_filebuf<char_type, traits_type>*>(&__sb_); +} + +template <class _CharT, class _Traits> +inline +bool +basic_ifstream<_CharT, _Traits>::is_open() const +{ + return __sb_.is_open(); +} + +#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE +template <class _CharT, class _Traits> +void +basic_ifstream<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode) +{ + if (__sb_.open(__s, __mode | ios_base::in)) + this->clear(); + else + this->setstate(ios_base::failbit); +} + +template <class _CharT, class _Traits> +void +basic_ifstream<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode) +{ + if (__sb_.open(__s, __mode | ios_base::in)) + this->clear(); + else + this->setstate(ios_base::failbit); +} +#endif + +template <class _CharT, class _Traits> +inline +void +basic_ifstream<_CharT, _Traits>::close() +{ + if (__sb_.close() == 0) + this->setstate(ios_base::failbit); +} + +// basic_ofstream + +template <class _CharT, class _Traits> +class _LIBCPP_TEMPLATE_VIS basic_ofstream + : public basic_ostream<_CharT, _Traits> +{ +public: + 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; + + _LIBCPP_INLINE_VISIBILITY + basic_ofstream(); + _LIBCPP_INLINE_VISIBILITY + explicit basic_ofstream(const char* __s, ios_base::openmode __mode = ios_base::out); + _LIBCPP_INLINE_VISIBILITY + explicit basic_ofstream(const string& __s, ios_base::openmode __mode = ios_base::out); +#ifndef _LIBCPP_CXX03_LANG + _LIBCPP_INLINE_VISIBILITY + basic_ofstream(basic_ofstream&& __rhs); + + _LIBCPP_INLINE_VISIBILITY + basic_ofstream& operator=(basic_ofstream&& __rhs); +#endif + _LIBCPP_INLINE_VISIBILITY + void swap(basic_ofstream& __rhs); + + _LIBCPP_INLINE_VISIBILITY + basic_filebuf<char_type, traits_type>* rdbuf() const; + _LIBCPP_INLINE_VISIBILITY + bool is_open() const; +#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE + void open(const char* __s, ios_base::openmode __mode = ios_base::out); + void open(const string& __s, ios_base::openmode __mode = ios_base::out); +#endif + _LIBCPP_INLINE_VISIBILITY + void close(); + +private: + basic_filebuf<char_type, traits_type> __sb_; +}; + +template <class _CharT, class _Traits> +inline +basic_ofstream<_CharT, _Traits>::basic_ofstream() + : basic_ostream<char_type, traits_type>(&__sb_) +{ +} + +#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE +template <class _CharT, class _Traits> +inline +basic_ofstream<_CharT, _Traits>::basic_ofstream(const char* __s, ios_base::openmode __mode) + : basic_ostream<char_type, traits_type>(&__sb_) +{ + if (__sb_.open(__s, __mode | ios_base::out) == 0) + this->setstate(ios_base::failbit); +} + +template <class _CharT, class _Traits> +inline +basic_ofstream<_CharT, _Traits>::basic_ofstream(const string& __s, ios_base::openmode __mode) + : basic_ostream<char_type, traits_type>(&__sb_) +{ + if (__sb_.open(__s, __mode | ios_base::out) == 0) + this->setstate(ios_base::failbit); +} +#endif + +#ifndef _LIBCPP_CXX03_LANG + +template <class _CharT, class _Traits> +inline +basic_ofstream<_CharT, _Traits>::basic_ofstream(basic_ofstream&& __rhs) + : basic_ostream<char_type, traits_type>(_VSTD::move(__rhs)), + __sb_(_VSTD::move(__rhs.__sb_)) +{ + this->set_rdbuf(&__sb_); +} + +template <class _CharT, class _Traits> +inline +basic_ofstream<_CharT, _Traits>& +basic_ofstream<_CharT, _Traits>::operator=(basic_ofstream&& __rhs) +{ + basic_ostream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); + __sb_ = _VSTD::move(__rhs.__sb_); + return *this; +} + +#endif // _LIBCPP_CXX03_LANG + +template <class _CharT, class _Traits> +inline +void +basic_ofstream<_CharT, _Traits>::swap(basic_ofstream& __rhs) +{ + basic_ostream<char_type, traits_type>::swap(__rhs); + __sb_.swap(__rhs.__sb_); +} + +template <class _CharT, class _Traits> +inline _LIBCPP_INLINE_VISIBILITY +void +swap(basic_ofstream<_CharT, _Traits>& __x, basic_ofstream<_CharT, _Traits>& __y) +{ + __x.swap(__y); +} + +template <class _CharT, class _Traits> +inline +basic_filebuf<_CharT, _Traits>* +basic_ofstream<_CharT, _Traits>::rdbuf() const +{ + return const_cast<basic_filebuf<char_type, traits_type>*>(&__sb_); +} + +template <class _CharT, class _Traits> +inline +bool +basic_ofstream<_CharT, _Traits>::is_open() const +{ + return __sb_.is_open(); +} + +#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE +template <class _CharT, class _Traits> +void +basic_ofstream<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode) +{ + if (__sb_.open(__s, __mode | ios_base::out)) + this->clear(); + else + this->setstate(ios_base::failbit); +} + +template <class _CharT, class _Traits> +void +basic_ofstream<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode) +{ + if (__sb_.open(__s, __mode | ios_base::out)) + this->clear(); + else + this->setstate(ios_base::failbit); +} +#endif + +template <class _CharT, class _Traits> +inline +void +basic_ofstream<_CharT, _Traits>::close() +{ + if (__sb_.close() == 0) + this->setstate(ios_base::failbit); +} + +// basic_fstream + +template <class _CharT, class _Traits> +class _LIBCPP_TEMPLATE_VIS basic_fstream + : public basic_iostream<_CharT, _Traits> +{ +public: + 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; + + _LIBCPP_INLINE_VISIBILITY + basic_fstream(); +#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE + _LIBCPP_INLINE_VISIBILITY + explicit basic_fstream(const char* __s, ios_base::openmode __mode = ios_base::in | ios_base::out); + _LIBCPP_INLINE_VISIBILITY + explicit basic_fstream(const string& __s, ios_base::openmode __mode = ios_base::in | ios_base::out); +#endif +#ifndef _LIBCPP_CXX03_LANG + _LIBCPP_INLINE_VISIBILITY + basic_fstream(basic_fstream&& __rhs); + + _LIBCPP_INLINE_VISIBILITY + basic_fstream& operator=(basic_fstream&& __rhs); +#endif + _LIBCPP_INLINE_VISIBILITY + void swap(basic_fstream& __rhs); + + _LIBCPP_INLINE_VISIBILITY + basic_filebuf<char_type, traits_type>* rdbuf() const; + _LIBCPP_INLINE_VISIBILITY + bool is_open() const; +#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE + void open(const char* __s, ios_base::openmode __mode = ios_base::in | ios_base::out); + void open(const string& __s, ios_base::openmode __mode = ios_base::in | ios_base::out); +#endif + _LIBCPP_INLINE_VISIBILITY + void close(); + +private: + basic_filebuf<char_type, traits_type> __sb_; +}; + +template <class _CharT, class _Traits> +inline +basic_fstream<_CharT, _Traits>::basic_fstream() + : basic_iostream<char_type, traits_type>(&__sb_) +{ +} + +#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE +template <class _CharT, class _Traits> +inline +basic_fstream<_CharT, _Traits>::basic_fstream(const char* __s, ios_base::openmode __mode) + : basic_iostream<char_type, traits_type>(&__sb_) +{ + if (__sb_.open(__s, __mode) == 0) + this->setstate(ios_base::failbit); +} + +template <class _CharT, class _Traits> +inline +basic_fstream<_CharT, _Traits>::basic_fstream(const string& __s, ios_base::openmode __mode) + : basic_iostream<char_type, traits_type>(&__sb_) +{ + if (__sb_.open(__s, __mode) == 0) + this->setstate(ios_base::failbit); +} +#endif + +#ifndef _LIBCPP_CXX03_LANG + +template <class _CharT, class _Traits> +inline +basic_fstream<_CharT, _Traits>::basic_fstream(basic_fstream&& __rhs) + : basic_iostream<char_type, traits_type>(_VSTD::move(__rhs)), + __sb_(_VSTD::move(__rhs.__sb_)) +{ + this->set_rdbuf(&__sb_); +} + +template <class _CharT, class _Traits> +inline +basic_fstream<_CharT, _Traits>& +basic_fstream<_CharT, _Traits>::operator=(basic_fstream&& __rhs) +{ + basic_iostream<char_type, traits_type>::operator=(_VSTD::move(__rhs)); + __sb_ = _VSTD::move(__rhs.__sb_); + return *this; +} + +#endif // _LIBCPP_CXX03_LANG + +template <class _CharT, class _Traits> +inline +void +basic_fstream<_CharT, _Traits>::swap(basic_fstream& __rhs) +{ + basic_iostream<char_type, traits_type>::swap(__rhs); + __sb_.swap(__rhs.__sb_); +} + +template <class _CharT, class _Traits> +inline _LIBCPP_INLINE_VISIBILITY +void +swap(basic_fstream<_CharT, _Traits>& __x, basic_fstream<_CharT, _Traits>& __y) +{ + __x.swap(__y); +} + +template <class _CharT, class _Traits> +inline +basic_filebuf<_CharT, _Traits>* +basic_fstream<_CharT, _Traits>::rdbuf() const +{ + return const_cast<basic_filebuf<char_type, traits_type>*>(&__sb_); +} + +template <class _CharT, class _Traits> +inline +bool +basic_fstream<_CharT, _Traits>::is_open() const +{ + return __sb_.is_open(); +} + +#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE +template <class _CharT, class _Traits> +void +basic_fstream<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode) +{ + if (__sb_.open(__s, __mode)) + this->clear(); + else + this->setstate(ios_base::failbit); +} + +template <class _CharT, class _Traits> +void +basic_fstream<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode) +{ + if (__sb_.open(__s, __mode)) + this->clear(); + else + this->setstate(ios_base::failbit); +} +#endif + +template <class _CharT, class _Traits> +inline +void +basic_fstream<_CharT, _Traits>::close() +{ + if (__sb_.close() == 0) + this->setstate(ios_base::failbit); +} + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP_FSTREAM |