| // -*- C++ -*- |
| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #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* open(const filesystem::path& p, ios_base::openmode mode); // C++17 |
| 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); |
| explicit basic_ifstream(const filesystem::path& p, |
| ios_base::openmode mode = ios_base::in); // C++17 |
| 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 open(const filesystem::path& s, ios_base::openmode mode = ios_base::in); // C++17 |
| |
| 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); |
| explicit basic_ofstream(const filesystem::path& p, |
| ios_base::openmode mode = ios_base::out); // C++17 |
| 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 open(const filesystem::path& p, |
| ios_base::openmode mode = ios_base::out); // C++17 |
| |
| 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); |
| explicit basic_fstream(const filesystem::path& p, |
| ios_base::openmode mode = ios_base::in|ios_base::out); C++17 |
| 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 open(const filesystem::path& s, |
| ios_base::openmode mode = ios_base::in|ios_base::out); // C++17 |
| |
| 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 <__algorithm/max.h> |
| #include <__assert> // all public C++ headers provide the assertion handler |
| #include <__availability> |
| #include <__config> |
| #include <__locale> |
| #include <__utility/move.h> |
| #include <__utility/swap.h> |
| #include <__utility/unreachable.h> |
| #include <cstdio> |
| #include <cstdlib> |
| #include <cstring> |
| #include <istream> |
| #include <ostream> |
| #include <typeinfo> |
| #include <version> |
| |
| #if !defined(_LIBCPP_HAS_NO_FILESYSTEM_LIBRARY) |
| # include <filesystem> |
| #endif |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| _LIBCPP_PUSH_MACROS |
| #include <__undef_macros> |
| |
| #if defined(_LIBCPP_MSVCRT) || defined(_NEWLIB_VERSION) |
| # define _LIBCPP_HAS_NO_OFF_T_FUNCTIONS |
| #endif |
| |
| #if !defined(_LIBCPP_HAS_NO_FSTREAM) |
| |
| _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(); |
| basic_filebuf(basic_filebuf&& __rhs); |
| ~basic_filebuf() override; |
| |
| // 27.9.1.3 Assign/swap: |
| _LIBCPP_INLINE_VISIBILITY |
| basic_filebuf& operator=(basic_filebuf&& __rhs); |
| void swap(basic_filebuf& __rhs); |
| |
| // 27.9.1.4 Members: |
| _LIBCPP_INLINE_VISIBILITY |
| bool is_open() const; |
| basic_filebuf* open(const char* __s, ios_base::openmode __mode); |
| #ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR |
| basic_filebuf* open(const wchar_t* __s, ios_base::openmode __mode); |
| #endif |
| _LIBCPP_INLINE_VISIBILITY |
| basic_filebuf* open(const string& __s, ios_base::openmode __mode); |
| |
| #if _LIBCPP_STD_VER >= 17 && !defined(_LIBCPP_HAS_NO_FILESYSTEM_LIBRARY) |
| _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_INLINE_VISIBILITY |
| basic_filebuf* open(const _VSTD_FS::path& __p, ios_base::openmode __mode) { |
| return open(__p.c_str(), __mode); |
| } |
| #endif |
| _LIBCPP_INLINE_VISIBILITY |
| basic_filebuf* __open(int __fd, ios_base::openmode __mode); |
| basic_filebuf* close(); |
| |
| _LIBCPP_INLINE_VISIBILITY |
| inline static const char* |
| __make_mdstring(ios_base::openmode __mode) _NOEXCEPT; |
| |
| protected: |
| // 27.9.1.5 Overridden virtual functions: |
| int_type underflow() override; |
| int_type pbackfail(int_type __c = traits_type::eof()) override; |
| int_type overflow (int_type __c = traits_type::eof()) override; |
| basic_streambuf<char_type, traits_type>* setbuf(char_type* __s, streamsize __n) override; |
| pos_type seekoff(off_type __off, ios_base::seekdir __way, |
| ios_base::openmode __wch = ios_base::in | ios_base::out) override; |
| pos_type seekpos(pos_type __sp, |
| ios_base::openmode __wch = ios_base::in | ios_base::out) override; |
| int sync() override; |
| void imbue(const locale& __loc) override; |
| |
| 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_(nullptr), |
| __extbufnext_(nullptr), |
| __extbufend_(nullptr), |
| __ebs_(0), |
| __intbuf_(nullptr), |
| __ibs_(0), |
| __file_(nullptr), |
| __cv_(nullptr), |
| __st_(), |
| __st_last_(), |
| __om_(0), |
| __cm_(0), |
| __owns_eb_(false), |
| __owns_ib_(false), |
| __always_noconv_(false) |
| { |
| if (std::has_facet<codecvt<char_type, char, state_type> >(this->getloc())) |
| { |
| __cv_ = &std::use_facet<codecvt<char_type, char, state_type> >(this->getloc()); |
| __always_noconv_ = __cv_->always_noconv(); |
| } |
| setbuf(nullptr, 4096); |
| } |
| |
| 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_ = nullptr; |
| __rhs.__extbufnext_ = nullptr; |
| __rhs.__extbufend_ = nullptr; |
| __rhs.__ebs_ = 0; |
| __rhs.__intbuf_ = 0; |
| __rhs.__ibs_ = 0; |
| __rhs.__file_ = nullptr; |
| __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; |
| } |
| |
| 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_) |
| { |
| // Neither *this nor __rhs uses the small buffer, so we can simply swap the pointers. |
| std::swap(__extbuf_, __rhs.__extbuf_); |
| std::swap(__extbufnext_, __rhs.__extbufnext_); |
| std::swap(__extbufend_, __rhs.__extbufend_); |
| } |
| else |
| { |
| ptrdiff_t __ln = __extbufnext_ ? __extbufnext_ - __extbuf_ : 0; |
| ptrdiff_t __le = __extbufend_ ? __extbufend_ - __extbuf_ : 0; |
| ptrdiff_t __rn = __rhs.__extbufnext_ ? __rhs.__extbufnext_ - __rhs.__extbuf_ : 0; |
| ptrdiff_t __re = __rhs.__extbufend_ ? __rhs.__extbufend_ - __rhs.__extbuf_ : 0; |
| if (__extbuf_ == __extbuf_min_ && __rhs.__extbuf_ != __rhs.__extbuf_min_) |
| { |
| // *this uses the small buffer, but __rhs doesn't. |
| __extbuf_ = __rhs.__extbuf_; |
| __rhs.__extbuf_ = __rhs.__extbuf_min_; |
| std::memmove(__rhs.__extbuf_min_, __extbuf_min_, sizeof(__extbuf_min_)); |
| } |
| else if (__extbuf_ != __extbuf_min_ && __rhs.__extbuf_ == __rhs.__extbuf_min_) |
| { |
| // *this doesn't use the small buffer, but __rhs does. |
| __rhs.__extbuf_ = __extbuf_; |
| __extbuf_ = __extbuf_min_; |
| std::memmove(__extbuf_min_, __rhs.__extbuf_min_, sizeof(__extbuf_min_)); |
| } |
| else |
| { |
| // Both *this and __rhs use the small buffer. |
| char __tmp[sizeof(__extbuf_min_)]; |
| std::memmove(__tmp, __extbuf_min_, sizeof(__extbuf_min_)); |
| std::memmove(__extbuf_min_, __rhs.__extbuf_min_, sizeof(__extbuf_min_)); |
| std::memmove(__rhs.__extbuf_min_, __tmp, sizeof(__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_ != nullptr; |
| } |
| |
| template <class _CharT, class _Traits> |
| const char* basic_filebuf<_CharT, _Traits>::__make_mdstring( |
| ios_base::openmode __mode) _NOEXCEPT { |
| switch (__mode & ~ios_base::ate) { |
| case ios_base::out: |
| case ios_base::out | ios_base::trunc: |
| return "w" _LIBCPP_FOPEN_CLOEXEC_MODE; |
| case ios_base::out | ios_base::app: |
| case ios_base::app: |
| return "a" _LIBCPP_FOPEN_CLOEXEC_MODE; |
| case ios_base::in: |
| return "r" _LIBCPP_FOPEN_CLOEXEC_MODE; |
| case ios_base::in | ios_base::out: |
| return "r+" _LIBCPP_FOPEN_CLOEXEC_MODE; |
| case ios_base::in | ios_base::out | ios_base::trunc: |
| return "w+" _LIBCPP_FOPEN_CLOEXEC_MODE; |
| case ios_base::in | ios_base::out | ios_base::app: |
| case ios_base::in | ios_base::app: |
| return "a+" _LIBCPP_FOPEN_CLOEXEC_MODE; |
| case ios_base::out | ios_base::binary: |
| case ios_base::out | ios_base::trunc | ios_base::binary: |
| return "wb" _LIBCPP_FOPEN_CLOEXEC_MODE; |
| case ios_base::out | ios_base::app | ios_base::binary: |
| case ios_base::app | ios_base::binary: |
| return "ab" _LIBCPP_FOPEN_CLOEXEC_MODE; |
| case ios_base::in | ios_base::binary: |
| return "rb" _LIBCPP_FOPEN_CLOEXEC_MODE; |
| case ios_base::in | ios_base::out | ios_base::binary: |
| return "r+b" _LIBCPP_FOPEN_CLOEXEC_MODE; |
| case ios_base::in | ios_base::out | ios_base::trunc | ios_base::binary: |
| return "w+b" _LIBCPP_FOPEN_CLOEXEC_MODE; |
| case ios_base::in | ios_base::out | ios_base::app | ios_base::binary: |
| case ios_base::in | ios_base::app | ios_base::binary: |
| return "a+b" _LIBCPP_FOPEN_CLOEXEC_MODE; |
| default: |
| return nullptr; |
| } |
| __libcpp_unreachable(); |
| } |
| |
| 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 = nullptr; |
| if (__file_ == nullptr) |
| { |
| if (const char* __mdstr = __make_mdstring(__mode)) { |
| __rt = this; |
| __file_ = fopen(__s, __mdstr); |
| if (__file_) { |
| __om_ = __mode; |
| if (__mode & ios_base::ate) { |
| if (fseek(__file_, 0, SEEK_END)) { |
| fclose(__file_); |
| __file_ = nullptr; |
| __rt = nullptr; |
| } |
| } |
| } else |
| __rt = nullptr; |
| } |
| } |
| return __rt; |
| } |
| |
| template <class _CharT, class _Traits> |
| inline |
| basic_filebuf<_CharT, _Traits>* |
| basic_filebuf<_CharT, _Traits>::__open(int __fd, ios_base::openmode __mode) { |
| basic_filebuf<_CharT, _Traits>* __rt = nullptr; |
| if (__file_ == nullptr) { |
| if (const char* __mdstr = __make_mdstring(__mode)) { |
| __rt = this; |
| __file_ = fdopen(__fd, __mdstr); |
| if (__file_) { |
| __om_ = __mode; |
| if (__mode & ios_base::ate) { |
| if (fseek(__file_, 0, SEEK_END)) { |
| fclose(__file_); |
| __file_ = nullptr; |
| __rt = nullptr; |
| } |
| } |
| } else |
| __rt = nullptr; |
| } |
| } |
| return __rt; |
| } |
| |
| #ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR |
| // This is basically the same as the char* overload except that it uses _wfopen |
| // and long mode strings. |
| template <class _CharT, class _Traits> |
| basic_filebuf<_CharT, _Traits>* |
| basic_filebuf<_CharT, _Traits>::open(const wchar_t* __s, ios_base::openmode __mode) |
| { |
| basic_filebuf<_CharT, _Traits>* __rt = nullptr; |
| if (__file_ == nullptr) |
| { |
| __rt = this; |
| const wchar_t* __mdstr; |
| switch (__mode & ~ios_base::ate) |
| { |
| case ios_base::out: |
| case ios_base::out | ios_base::trunc: |
| __mdstr = L"w"; |
| break; |
| case ios_base::out | ios_base::app: |
| case ios_base::app: |
| __mdstr = L"a"; |
| break; |
| case ios_base::in: |
| __mdstr = L"r"; |
| break; |
| case ios_base::in | ios_base::out: |
| __mdstr = L"r+"; |
| break; |
| case ios_base::in | ios_base::out | ios_base::trunc: |
| __mdstr = L"w+"; |
| break; |
| case ios_base::in | ios_base::out | ios_base::app: |
| case ios_base::in | ios_base::app: |
| __mdstr = L"a+"; |
| break; |
| case ios_base::out | ios_base::binary: |
| case ios_base::out | ios_base::trunc | ios_base::binary: |
| __mdstr = L"wb"; |
| break; |
| case ios_base::out | ios_base::app | ios_base::binary: |
| case ios_base::app | ios_base::binary: |
| __mdstr = L"ab"; |
| break; |
| case ios_base::in | ios_base::binary: |
| __mdstr = L"rb"; |
| break; |
| case ios_base::in | ios_base::out | ios_base::binary: |
| __mdstr = L"r+b"; |
| break; |
| case ios_base::in | ios_base::out | ios_base::trunc | ios_base::binary: |
| __mdstr = L"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 = L"a+b"; |
| break; |
| default: |
| __rt = nullptr; |
| break; |
| } |
| if (__rt) |
| { |
| __file_ = _wfopen(__s, __mdstr); |
| if (__file_) |
| { |
| __om_ = __mode; |
| if (__mode & ios_base::ate) |
| { |
| if (fseek(__file_, 0, SEEK_END)) |
| { |
| fclose(__file_); |
| __file_ = nullptr; |
| __rt = nullptr; |
| } |
| } |
| } |
| else |
| __rt = nullptr; |
| } |
| } |
| return __rt; |
| } |
| #endif |
| |
| 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); |
| } |
| |
| template <class _CharT, class _Traits> |
| basic_filebuf<_CharT, _Traits>* |
| basic_filebuf<_CharT, _Traits>::close() |
| { |
| basic_filebuf<_CharT, _Traits>* __rt = nullptr; |
| if (__file_) |
| { |
| __rt = this; |
| unique_ptr<FILE, int(*)(FILE*)> __h(__file_, fclose); |
| if (sync()) |
| __rt = nullptr; |
| if (fclose(__h.release())) |
| __rt = nullptr; |
| __file_ = nullptr; |
| setbuf(0, 0); |
| } |
| return __rt; |
| } |
| |
| template <class _CharT, class _Traits> |
| typename basic_filebuf<_CharT, _Traits>::int_type |
| basic_filebuf<_CharT, _Traits>::underflow() |
| { |
| if (__file_ == nullptr) |
| return traits_type::eof(); |
| bool __initial = __read_mode(); |
| char_type __1buf; |
| if (this->gptr() == nullptr) |
| this->setg(&__1buf, &__1buf+1, &__1buf+1); |
| const size_t __unget_sz = __initial ? 0 : std::min<size_t>((this->egptr() - this->eback()) / 2, 4); |
| int_type __c = traits_type::eof(); |
| if (this->gptr() == this->egptr()) |
| { |
| _VSTD::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 |
| { |
| if (__extbufend_ != __extbufnext_) { |
| _LIBCPP_ASSERT(__extbufnext_ != nullptr, "underflow moving from nullptr"); |
| _LIBCPP_ASSERT(__extbuf_ != nullptr, "underflow moving into nullptr"); |
| _VSTD::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(nullptr, nullptr, nullptr); |
| 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_ == nullptr) |
| 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() == nullptr) |
| 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 (std::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 (std::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(nullptr, nullptr, nullptr); |
| this->setp(nullptr, nullptr); |
| 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_ = nullptr; |
| __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_ == nullptr || (__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_ == nullptr || 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_ == nullptr) |
| 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(nullptr, nullptr, nullptr); |
| __cm_ = 0; |
| } |
| return 0; |
| } |
| |
| template <class _CharT, class _Traits> |
| void |
| basic_filebuf<_CharT, _Traits>::imbue(const locale& __loc) |
| { |
| sync(); |
| __cv_ = &std::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(nullptr, nullptr, nullptr); |
| this->setp(nullptr, nullptr); |
| // 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_ = nullptr; |
| __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(nullptr, nullptr); |
| 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(nullptr, nullptr, nullptr); |
| 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(nullptr, nullptr); |
| __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(); |
| _LIBCPP_INLINE_VISIBILITY |
| explicit basic_ifstream(const char* __s, ios_base::openmode __mode = ios_base::in); |
| #ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR |
| _LIBCPP_INLINE_VISIBILITY |
| explicit basic_ifstream(const wchar_t* __s, ios_base::openmode __mode = ios_base::in); |
| #endif |
| _LIBCPP_INLINE_VISIBILITY |
| explicit basic_ifstream(const string& __s, ios_base::openmode __mode = ios_base::in); |
| #if _LIBCPP_STD_VER >= 17 && !defined(_LIBCPP_HAS_NO_FILESYSTEM_LIBRARY) |
| _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_INLINE_VISIBILITY |
| explicit basic_ifstream(const filesystem::path& __p, ios_base::openmode __mode = ios_base::in) |
| : basic_ifstream(__p.c_str(), __mode) {} |
| #endif // _LIBCPP_STD_VER >= 17 |
| _LIBCPP_INLINE_VISIBILITY |
| basic_ifstream(basic_ifstream&& __rhs); |
| _LIBCPP_INLINE_VISIBILITY |
| basic_ifstream& operator=(basic_ifstream&& __rhs); |
| _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; |
| void open(const char* __s, ios_base::openmode __mode = ios_base::in); |
| #ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR |
| void open(const wchar_t* __s, ios_base::openmode __mode = ios_base::in); |
| #endif |
| void open(const string& __s, ios_base::openmode __mode = ios_base::in); |
| #if _LIBCPP_STD_VER >= 17 && !defined(_LIBCPP_HAS_NO_FILESYSTEM_LIBRARY) |
| _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_INLINE_VISIBILITY |
| void open(const filesystem::path& __p, |
| ios_base::openmode __mode = ios_base::in) { |
| return open(__p.c_str(), __mode); |
| } |
| #endif // _LIBCPP_STD_VER >= 17 |
| |
| _LIBCPP_INLINE_VISIBILITY |
| void __open(int __fd, ios_base::openmode __mode); |
| _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_) |
| { |
| } |
| |
| 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) == nullptr) |
| this->setstate(ios_base::failbit); |
| } |
| |
| #ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR |
| template <class _CharT, class _Traits> |
| inline |
| basic_ifstream<_CharT, _Traits>::basic_ifstream(const wchar_t* __s, ios_base::openmode __mode) |
| : basic_istream<char_type, traits_type>(&__sb_) |
| { |
| if (__sb_.open(__s, __mode | ios_base::in) == nullptr) |
| this->setstate(ios_base::failbit); |
| } |
| #endif |
| |
| 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) == nullptr) |
| this->setstate(ios_base::failbit); |
| } |
| |
| 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; |
| } |
| |
| 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(); |
| } |
| |
| 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); |
| } |
| |
| #ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR |
| template <class _CharT, class _Traits> |
| void |
| basic_ifstream<_CharT, _Traits>::open(const wchar_t* __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> |
| 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); |
| } |
| |
| template <class _CharT, class _Traits> |
| inline |
| void basic_ifstream<_CharT, _Traits>::__open(int __fd, |
| ios_base::openmode __mode) { |
| if (__sb_.__open(__fd, __mode | ios_base::in)) |
| this->clear(); |
| else |
| this->setstate(ios_base::failbit); |
| } |
| |
| 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); |
| #ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR |
| _LIBCPP_INLINE_VISIBILITY |
| explicit basic_ofstream(const wchar_t* __s, ios_base::openmode __mode = ios_base::out); |
| #endif |
| _LIBCPP_INLINE_VISIBILITY |
| explicit basic_ofstream(const string& __s, ios_base::openmode __mode = ios_base::out); |
| |
| #if _LIBCPP_STD_VER >= 17 && !defined(_LIBCPP_HAS_NO_FILESYSTEM_LIBRARY) |
| _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_INLINE_VISIBILITY |
| explicit basic_ofstream(const filesystem::path& __p, ios_base::openmode __mode = ios_base::out) |
| : basic_ofstream(__p.c_str(), __mode) {} |
| #endif // _LIBCPP_STD_VER >= 17 |
| |
| _LIBCPP_INLINE_VISIBILITY |
| basic_ofstream(basic_ofstream&& __rhs); |
| _LIBCPP_INLINE_VISIBILITY |
| basic_ofstream& operator=(basic_ofstream&& __rhs); |
| _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; |
| void open(const char* __s, ios_base::openmode __mode = ios_base::out); |
| #ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR |
| void open(const wchar_t* __s, ios_base::openmode __mode = ios_base::out); |
| #endif |
| void open(const string& __s, ios_base::openmode __mode = ios_base::out); |
| |
| #if _LIBCPP_STD_VER >= 17 && !defined(_LIBCPP_HAS_NO_FILESYSTEM_LIBRARY) |
| _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_INLINE_VISIBILITY |
| void open(const filesystem::path& __p, ios_base::openmode __mode = ios_base::out) |
| { return open(__p.c_str(), __mode); } |
| #endif // _LIBCPP_STD_VER >= 17 |
| |
| _LIBCPP_INLINE_VISIBILITY |
| void __open(int __fd, ios_base::openmode __mode); |
| _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_) |
| { |
| } |
| |
| 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) == nullptr) |
| this->setstate(ios_base::failbit); |
| } |
| |
| #ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR |
| template <class _CharT, class _Traits> |
| inline |
| basic_ofstream<_CharT, _Traits>::basic_ofstream(const wchar_t* __s, ios_base::openmode __mode) |
| : basic_ostream<char_type, traits_type>(&__sb_) |
| { |
| if (__sb_.open(__s, __mode | ios_base::out) == nullptr) |
| this->setstate(ios_base::failbit); |
| } |
| #endif |
| |
| 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) == nullptr) |
| this->setstate(ios_base::failbit); |
| } |
| |
| 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; |
| } |
| |
| 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(); |
| } |
| |
| 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); |
| } |
| |
| #ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR |
| template <class _CharT, class _Traits> |
| void |
| basic_ofstream<_CharT, _Traits>::open(const wchar_t* __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> |
| 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); |
| } |
| |
| template <class _CharT, class _Traits> |
| inline |
| void basic_ofstream<_CharT, _Traits>::__open(int __fd, |
| ios_base::openmode __mode) { |
| if (__sb_.__open(__fd, __mode | ios_base::out)) |
| this->clear(); |
| else |
| this->setstate(ios_base::failbit); |
| } |
| |
| template <class _CharT, class _Traits> |
| inline |
| void |
| basic_ofstream<_CharT, _Traits>::close() |
| { |
| if (__sb_.close() == nullptr) |
| 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(); |
| _LIBCPP_INLINE_VISIBILITY |
| explicit basic_fstream(const char* __s, ios_base::openmode __mode = ios_base::in | ios_base::out); |
| #ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR |
| _LIBCPP_INLINE_VISIBILITY |
| explicit basic_fstream(const wchar_t* __s, ios_base::openmode __mode = ios_base::in | ios_base::out); |
| #endif |
| _LIBCPP_INLINE_VISIBILITY |
| explicit basic_fstream(const string& __s, ios_base::openmode __mode = ios_base::in | ios_base::out); |
| |
| #if _LIBCPP_STD_VER >= 17 && !defined(_LIBCPP_HAS_NO_FILESYSTEM_LIBRARY) |
| _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_INLINE_VISIBILITY |
| explicit basic_fstream(const filesystem::path& __p, ios_base::openmode __mode = ios_base::in | ios_base::out) |
| : basic_fstream(__p.c_str(), __mode) {} |
| #endif // _LIBCPP_STD_VER >= 17 |
| |
| _LIBCPP_INLINE_VISIBILITY |
| basic_fstream(basic_fstream&& __rhs); |
| |
| _LIBCPP_INLINE_VISIBILITY |
| basic_fstream& operator=(basic_fstream&& __rhs); |
| |
| _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; |
| void open(const char* __s, ios_base::openmode __mode = ios_base::in | ios_base::out); |
| #ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR |
| void open(const wchar_t* __s, ios_base::openmode __mode = ios_base::in | ios_base::out); |
| #endif |
| void open(const string& __s, ios_base::openmode __mode = ios_base::in | ios_base::out); |
| |
| #if _LIBCPP_STD_VER >= 17 && !defined(_LIBCPP_HAS_NO_FILESYSTEM_LIBRARY) |
| _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_INLINE_VISIBILITY |
| void open(const filesystem::path& __p, ios_base::openmode __mode = ios_base::in|ios_base::out) |
| { return open(__p.c_str(), __mode); } |
| #endif // _LIBCPP_STD_VER >= 17 |
| |
| _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_) |
| { |
| } |
| |
| 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) == nullptr) |
| this->setstate(ios_base::failbit); |
| } |
| |
| #ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR |
| template <class _CharT, class _Traits> |
| inline |
| basic_fstream<_CharT, _Traits>::basic_fstream(const wchar_t* __s, ios_base::openmode __mode) |
| : basic_iostream<char_type, traits_type>(&__sb_) |
| { |
| if (__sb_.open(__s, __mode) == nullptr) |
| this->setstate(ios_base::failbit); |
| } |
| #endif |
| |
| 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) == nullptr) |
| this->setstate(ios_base::failbit); |
| } |
| |
| 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; |
| } |
| |
| 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(); |
| } |
| |
| 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); |
| } |
| |
| #ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR |
| template <class _CharT, class _Traits> |
| void |
| basic_fstream<_CharT, _Traits>::open(const wchar_t* __s, ios_base::openmode __mode) |
| { |
| if (__sb_.open(__s, __mode)) |
| this->clear(); |
| else |
| this->setstate(ios_base::failbit); |
| } |
| #endif |
| |
| 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); |
| } |
| |
| template <class _CharT, class _Traits> |
| inline |
| void |
| basic_fstream<_CharT, _Traits>::close() |
| { |
| if (__sb_.close() == nullptr) |
| this->setstate(ios_base::failbit); |
| } |
| |
| #if defined(_LIBCPP_ABI_ENABLE_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1) |
| extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ifstream<char>; |
| extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ofstream<char>; |
| extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_filebuf<char>; |
| #endif |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP_HAS_NO_FSTREAM |
| |
| _LIBCPP_POP_MACROS |
| |
| #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20 |
| # include <atomic> |
| # include <concepts> |
| # include <iosfwd> |
| # include <limits> |
| # include <new> |
| # include <stdexcept> |
| # include <type_traits> |
| #endif |
| |
| #endif // _LIBCPP_FSTREAM |
