1432 lines
43 KiB
C++
1432 lines
43 KiB
C++
// -*- C++ -*-
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//===------------------------- fstream ------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_FSTREAM
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#define _LIBCPP_FSTREAM
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/*
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fstream synopsis
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template <class charT, class traits = char_traits<charT> >
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class basic_filebuf
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: public basic_streambuf<charT, traits>
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{
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public:
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typedef charT char_type;
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typedef traits traits_type;
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typedef typename traits_type::int_type int_type;
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typedef typename traits_type::pos_type pos_type;
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typedef typename traits_type::off_type off_type;
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// 27.9.1.2 Constructors/destructor:
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basic_filebuf();
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basic_filebuf(basic_filebuf&& rhs);
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virtual ~basic_filebuf();
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// 27.9.1.3 Assign/swap:
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basic_filebuf& operator=(basic_filebuf&& rhs);
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void swap(basic_filebuf& rhs);
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// 27.9.1.4 Members:
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bool is_open() const;
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basic_filebuf* open(const char* s, ios_base::openmode mode);
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basic_filebuf* open(const string& s, ios_base::openmode mode);
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basic_filebuf* close();
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protected:
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// 27.9.1.5 Overridden virtual functions:
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virtual streamsize showmanyc();
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virtual int_type underflow();
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virtual int_type uflow();
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virtual int_type pbackfail(int_type c = traits_type::eof());
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virtual int_type overflow (int_type c = traits_type::eof());
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virtual basic_streambuf<char_type, traits_type>* setbuf(char_type* s, streamsize n);
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virtual pos_type seekoff(off_type off, ios_base::seekdir way,
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ios_base::openmode which = ios_base::in | ios_base::out);
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virtual pos_type seekpos(pos_type sp,
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ios_base::openmode which = ios_base::in | ios_base::out);
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virtual int sync();
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virtual void imbue(const locale& loc);
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};
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template <class charT, class traits>
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void
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swap(basic_filebuf<charT, traits>& x, basic_filebuf<charT, traits>& y);
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typedef basic_filebuf<char> filebuf;
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typedef basic_filebuf<wchar_t> wfilebuf;
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template <class charT, class traits = char_traits<charT> >
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class basic_ifstream
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: public basic_istream<charT,traits>
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{
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public:
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typedef charT char_type;
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typedef traits traits_type;
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typedef typename traits_type::int_type int_type;
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typedef typename traits_type::pos_type pos_type;
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typedef typename traits_type::off_type off_type;
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basic_ifstream();
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explicit basic_ifstream(const char* s, ios_base::openmode mode = ios_base::in);
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explicit basic_ifstream(const string& s, ios_base::openmode mode = ios_base::in);
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basic_ifstream(basic_ifstream&& rhs);
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basic_ifstream& operator=(basic_ifstream&& rhs);
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void swap(basic_ifstream& rhs);
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basic_filebuf<char_type, traits_type>* rdbuf() const;
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bool is_open() const;
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void open(const char* s, ios_base::openmode mode = ios_base::in);
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void open(const string& s, ios_base::openmode mode = ios_base::in);
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void close();
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};
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template <class charT, class traits>
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void
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swap(basic_ifstream<charT, traits>& x, basic_ifstream<charT, traits>& y);
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typedef basic_ifstream<char> ifstream;
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typedef basic_ifstream<wchar_t> wifstream;
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template <class charT, class traits = char_traits<charT> >
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class basic_ofstream
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: public basic_ostream<charT,traits>
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{
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public:
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typedef charT char_type;
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typedef traits traits_type;
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typedef typename traits_type::int_type int_type;
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typedef typename traits_type::pos_type pos_type;
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typedef typename traits_type::off_type off_type;
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basic_ofstream();
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explicit basic_ofstream(const char* s, ios_base::openmode mode = ios_base::out);
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explicit basic_ofstream(const string& s, ios_base::openmode mode = ios_base::out);
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basic_ofstream(basic_ofstream&& rhs);
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basic_ofstream& operator=(basic_ofstream&& rhs);
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void swap(basic_ofstream& rhs);
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basic_filebuf<char_type, traits_type>* rdbuf() const;
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bool is_open() const;
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void open(const char* s, ios_base::openmode mode = ios_base::out);
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void open(const string& s, ios_base::openmode mode = ios_base::out);
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void close();
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};
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template <class charT, class traits>
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void
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swap(basic_ofstream<charT, traits>& x, basic_ofstream<charT, traits>& y);
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typedef basic_ofstream<char> ofstream;
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typedef basic_ofstream<wchar_t> wofstream;
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template <class charT, class traits=char_traits<charT> >
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class basic_fstream
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: public basic_iostream<charT,traits>
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{
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public:
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typedef charT char_type;
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typedef traits traits_type;
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typedef typename traits_type::int_type int_type;
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typedef typename traits_type::pos_type pos_type;
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typedef typename traits_type::off_type off_type;
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basic_fstream();
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explicit basic_fstream(const char* s, ios_base::openmode mode = ios_base::in|ios_base::out);
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explicit basic_fstream(const string& s, ios_base::openmode mode = ios_base::in|ios_base::out);
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basic_fstream(basic_fstream&& rhs);
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basic_fstream& operator=(basic_fstream&& rhs);
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void swap(basic_fstream& rhs);
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basic_filebuf<char_type, traits_type>* rdbuf() const;
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bool is_open() const;
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void open(const char* s, ios_base::openmode mode = ios_base::in|ios_base::out);
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void open(const string& s, ios_base::openmode mode = ios_base::in|ios_base::out);
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void close();
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};
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template <class charT, class traits>
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void swap(basic_fstream<charT, traits>& x, basic_fstream<charT, traits>& y);
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typedef basic_fstream<char> fstream;
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typedef basic_fstream<wchar_t> wfstream;
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} // std
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*/
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#include <__config>
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#include <ostream>
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#include <istream>
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#include <__locale>
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#include <cstdio>
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#include <__undef_min_max>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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#pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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template <class _CharT, class _Traits>
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class _LIBCPP_TYPE_VIS basic_filebuf
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: public basic_streambuf<_CharT, _Traits>
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{
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public:
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typedef _CharT char_type;
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typedef _Traits traits_type;
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typedef typename traits_type::int_type int_type;
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typedef typename traits_type::pos_type pos_type;
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typedef typename traits_type::off_type off_type;
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typedef typename traits_type::state_type state_type;
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// 27.9.1.2 Constructors/destructor:
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basic_filebuf();
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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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basic_filebuf(basic_filebuf&& __rhs);
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#endif
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virtual ~basic_filebuf();
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// 27.9.1.3 Assign/swap:
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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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basic_filebuf& operator=(basic_filebuf&& __rhs);
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#endif
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void swap(basic_filebuf& __rhs);
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// 27.9.1.4 Members:
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bool is_open() const;
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basic_filebuf* open(const char* __s, ios_base::openmode __mode);
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basic_filebuf* open(const string& __s, ios_base::openmode __mode);
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basic_filebuf* close();
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protected:
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// 27.9.1.5 Overridden virtual functions:
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virtual int_type underflow();
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virtual int_type pbackfail(int_type __c = traits_type::eof());
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virtual int_type overflow (int_type __c = traits_type::eof());
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virtual basic_streambuf<char_type, traits_type>* setbuf(char_type* __s, streamsize __n);
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virtual pos_type seekoff(off_type __off, ios_base::seekdir __way,
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ios_base::openmode __wch = ios_base::in | ios_base::out);
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virtual pos_type seekpos(pos_type __sp,
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ios_base::openmode __wch = ios_base::in | ios_base::out);
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virtual int sync();
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virtual void imbue(const locale& __loc);
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private:
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char* __extbuf_;
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const char* __extbufnext_;
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const char* __extbufend_;
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char __extbuf_min_[8];
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size_t __ebs_;
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char_type* __intbuf_;
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size_t __ibs_;
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FILE* __file_;
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const codecvt<char_type, char, state_type>* __cv_;
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state_type __st_;
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state_type __st_last_;
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ios_base::openmode __om_;
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ios_base::openmode __cm_;
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bool __owns_eb_;
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bool __owns_ib_;
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bool __always_noconv_;
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bool __read_mode();
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void __write_mode();
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};
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template <class _CharT, class _Traits>
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basic_filebuf<_CharT, _Traits>::basic_filebuf()
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: __extbuf_(0),
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__extbufnext_(0),
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__extbufend_(0),
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__ebs_(0),
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__intbuf_(0),
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__ibs_(0),
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__file_(0),
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__cv_(nullptr),
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__st_(),
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__st_last_(),
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__om_(0),
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__cm_(0),
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__owns_eb_(false),
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__owns_ib_(false),
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__always_noconv_(false)
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{
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if (has_facet<codecvt<char_type, char, state_type> >(this->getloc()))
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{
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__cv_ = &use_facet<codecvt<char_type, char, state_type> >(this->getloc());
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__always_noconv_ = __cv_->always_noconv();
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}
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setbuf(0, 4096);
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}
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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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template <class _CharT, class _Traits>
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basic_filebuf<_CharT, _Traits>::basic_filebuf(basic_filebuf&& __rhs)
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: basic_streambuf<_CharT, _Traits>(__rhs)
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{
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if (__rhs.__extbuf_ == __rhs.__extbuf_min_)
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{
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__extbuf_ = __extbuf_min_;
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__extbufnext_ = __extbuf_ + (__rhs.__extbufnext_ - __rhs.__extbuf_);
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__extbufend_ = __extbuf_ + (__rhs.__extbufend_ - __rhs.__extbuf_);
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}
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else
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{
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__extbuf_ = __rhs.__extbuf_;
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__extbufnext_ = __rhs.__extbufnext_;
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__extbufend_ = __rhs.__extbufend_;
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}
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__ebs_ = __rhs.__ebs_;
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__intbuf_ = __rhs.__intbuf_;
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__ibs_ = __rhs.__ibs_;
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__file_ = __rhs.__file_;
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__cv_ = __rhs.__cv_;
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__st_ = __rhs.__st_;
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__st_last_ = __rhs.__st_last_;
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__om_ = __rhs.__om_;
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__cm_ = __rhs.__cm_;
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__owns_eb_ = __rhs.__owns_eb_;
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__owns_ib_ = __rhs.__owns_ib_;
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__always_noconv_ = __rhs.__always_noconv_;
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if (__rhs.pbase())
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{
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if (__rhs.pbase() == __rhs.__intbuf_)
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this->setp(__intbuf_, __intbuf_ + (__rhs. epptr() - __rhs.pbase()));
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else
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this->setp((char_type*)__extbuf_,
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(char_type*)__extbuf_ + (__rhs. epptr() - __rhs.pbase()));
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this->pbump(__rhs. pptr() - __rhs.pbase());
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}
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else if (__rhs.eback())
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{
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if (__rhs.eback() == __rhs.__intbuf_)
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this->setg(__intbuf_, __intbuf_ + (__rhs.gptr() - __rhs.eback()),
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__intbuf_ + (__rhs.egptr() - __rhs.eback()));
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else
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this->setg((char_type*)__extbuf_,
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(char_type*)__extbuf_ + (__rhs.gptr() - __rhs.eback()),
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(char_type*)__extbuf_ + (__rhs.egptr() - __rhs.eback()));
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}
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__rhs.__extbuf_ = 0;
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__rhs.__extbufnext_ = 0;
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__rhs.__extbufend_ = 0;
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__rhs.__ebs_ = 0;
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__rhs.__intbuf_ = 0;
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__rhs.__ibs_ = 0;
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__rhs.__file_ = 0;
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__rhs.__st_ = state_type();
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__rhs.__st_last_ = state_type();
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__rhs.__om_ = 0;
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__rhs.__cm_ = 0;
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__rhs.__owns_eb_ = false;
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__rhs.__owns_ib_ = false;
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__rhs.setg(0, 0, 0);
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__rhs.setp(0, 0);
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}
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template <class _CharT, class _Traits>
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inline _LIBCPP_INLINE_VISIBILITY
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basic_filebuf<_CharT, _Traits>&
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basic_filebuf<_CharT, _Traits>::operator=(basic_filebuf&& __rhs)
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{
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close();
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swap(__rhs);
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return *this;
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}
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#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
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template <class _CharT, class _Traits>
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basic_filebuf<_CharT, _Traits>::~basic_filebuf()
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{
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#ifndef _LIBCPP_NO_EXCEPTIONS
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try
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{
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#endif // _LIBCPP_NO_EXCEPTIONS
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close();
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#ifndef _LIBCPP_NO_EXCEPTIONS
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}
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catch (...)
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{
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}
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#endif // _LIBCPP_NO_EXCEPTIONS
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if (__owns_eb_)
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delete [] __extbuf_;
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if (__owns_ib_)
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delete [] __intbuf_;
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}
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template <class _CharT, class _Traits>
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void
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basic_filebuf<_CharT, _Traits>::swap(basic_filebuf& __rhs)
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{
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basic_streambuf<char_type, traits_type>::swap(__rhs);
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if (__extbuf_ != __extbuf_min_ && __rhs.__extbuf_ != __rhs.__extbuf_min_)
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{
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_VSTD::swap(__extbuf_, __rhs.__extbuf_);
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_VSTD::swap(__extbufnext_, __rhs.__extbufnext_);
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_VSTD::swap(__extbufend_, __rhs.__extbufend_);
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}
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else
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{
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ptrdiff_t __ln = __extbufnext_ - __extbuf_;
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ptrdiff_t __le = __extbufend_ - __extbuf_;
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ptrdiff_t __rn = __rhs.__extbufnext_ - __rhs.__extbuf_;
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ptrdiff_t __re = __rhs.__extbufend_ - __rhs.__extbuf_;
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if (__extbuf_ == __extbuf_min_ && __rhs.__extbuf_ != __rhs.__extbuf_min_)
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{
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__extbuf_ = __rhs.__extbuf_;
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__rhs.__extbuf_ = __rhs.__extbuf_min_;
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}
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else if (__extbuf_ != __extbuf_min_ && __rhs.__extbuf_ == __rhs.__extbuf_min_)
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{
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__rhs.__extbuf_ = __extbuf_;
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__extbuf_ = __extbuf_min_;
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}
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__extbufnext_ = __extbuf_ + __rn;
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__extbufend_ = __extbuf_ + __re;
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__rhs.__extbufnext_ = __rhs.__extbuf_ + __ln;
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__rhs.__extbufend_ = __rhs.__extbuf_ + __le;
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}
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_VSTD::swap(__ebs_, __rhs.__ebs_);
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_VSTD::swap(__intbuf_, __rhs.__intbuf_);
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_VSTD::swap(__ibs_, __rhs.__ibs_);
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_VSTD::swap(__file_, __rhs.__file_);
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_VSTD::swap(__cv_, __rhs.__cv_);
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_VSTD::swap(__st_, __rhs.__st_);
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_VSTD::swap(__st_last_, __rhs.__st_last_);
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_VSTD::swap(__om_, __rhs.__om_);
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_VSTD::swap(__cm_, __rhs.__cm_);
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_VSTD::swap(__owns_eb_, __rhs.__owns_eb_);
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_VSTD::swap(__owns_ib_, __rhs.__owns_ib_);
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_VSTD::swap(__always_noconv_, __rhs.__always_noconv_);
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if (this->eback() == (char_type*)__rhs.__extbuf_min_)
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{
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ptrdiff_t __n = this->gptr() - this->eback();
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ptrdiff_t __e = this->egptr() - this->eback();
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this->setg((char_type*)__extbuf_min_,
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(char_type*)__extbuf_min_ + __n,
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(char_type*)__extbuf_min_ + __e);
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}
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else if (this->pbase() == (char_type*)__rhs.__extbuf_min_)
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{
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ptrdiff_t __n = this->pptr() - this->pbase();
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ptrdiff_t __e = this->epptr() - this->pbase();
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this->setp((char_type*)__extbuf_min_,
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(char_type*)__extbuf_min_ + __e);
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this->pbump(__n);
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}
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if (__rhs.eback() == (char_type*)__extbuf_min_)
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{
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ptrdiff_t __n = __rhs.gptr() - __rhs.eback();
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ptrdiff_t __e = __rhs.egptr() - __rhs.eback();
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__rhs.setg((char_type*)__rhs.__extbuf_min_,
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(char_type*)__rhs.__extbuf_min_ + __n,
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(char_type*)__rhs.__extbuf_min_ + __e);
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}
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else if (__rhs.pbase() == (char_type*)__extbuf_min_)
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{
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ptrdiff_t __n = __rhs.pptr() - __rhs.pbase();
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ptrdiff_t __e = __rhs.epptr() - __rhs.pbase();
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__rhs.setp((char_type*)__rhs.__extbuf_min_,
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(char_type*)__rhs.__extbuf_min_ + __e);
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__rhs.pbump(__n);
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}
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}
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template <class _CharT, class _Traits>
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inline _LIBCPP_INLINE_VISIBILITY
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void
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swap(basic_filebuf<_CharT, _Traits>& __x, basic_filebuf<_CharT, _Traits>& __y)
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{
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__x.swap(__y);
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}
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|
|
template <class _CharT, class _Traits>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
bool
|
|
basic_filebuf<_CharT, _Traits>::is_open() const
|
|
{
|
|
return __file_ != 0;
|
|
}
|
|
|
|
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 _LIBCPP_INLINE_VISIBILITY
|
|
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 = 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
|
|
{
|
|
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*)__extbufnext_, 1, __nmemb, __file_);
|
|
if (__nr != 0)
|
|
{
|
|
#ifndef _LIBCPP_NO_EXCEPTIONS
|
|
if (!__cv_)
|
|
throw bad_cast();
|
|
#endif
|
|
__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*)__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
|
|
{
|
|
#ifndef _LIBCPP_NO_EXCEPTIONS
|
|
if (!__cv_)
|
|
throw bad_cast();
|
|
#endif
|
|
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((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)
|
|
{
|
|
#ifndef _LIBCPP_NO_EXCEPTIONS
|
|
if (!__cv_)
|
|
throw bad_cast();
|
|
#endif
|
|
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 _WIN32
|
|
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 _WIN32
|
|
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;
|
|
#ifndef _LIBCPP_NO_EXCEPTIONS
|
|
if (!__cv_)
|
|
throw bad_cast();
|
|
#endif
|
|
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 _WIN32
|
|
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_TYPE_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;
|
|
|
|
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);
|
|
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
|
|
basic_ifstream(basic_ifstream&& __rhs);
|
|
#endif
|
|
|
|
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
|
|
basic_ifstream& operator=(basic_ifstream&& __rhs);
|
|
#endif
|
|
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();
|
|
|
|
private:
|
|
basic_filebuf<char_type, traits_type> __sb_;
|
|
};
|
|
|
|
template <class _CharT, class _Traits>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
basic_ifstream<_CharT, _Traits>::basic_ifstream()
|
|
: basic_istream<char_type, traits_type>(&__sb_)
|
|
{
|
|
}
|
|
|
|
template <class _CharT, class _Traits>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
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 _LIBCPP_INLINE_VISIBILITY
|
|
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);
|
|
}
|
|
|
|
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
|
|
|
|
template <class _CharT, class _Traits>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
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 _LIBCPP_INLINE_VISIBILITY
|
|
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_HAS_NO_RVALUE_REFERENCES
|
|
|
|
template <class _CharT, class _Traits>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
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 _LIBCPP_INLINE_VISIBILITY
|
|
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 _LIBCPP_INLINE_VISIBILITY
|
|
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);
|
|
}
|
|
|
|
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 _LIBCPP_INLINE_VISIBILITY
|
|
void
|
|
basic_ifstream<_CharT, _Traits>::close()
|
|
{
|
|
if (__sb_.close() == 0)
|
|
this->setstate(ios_base::failbit);
|
|
}
|
|
|
|
// basic_ofstream
|
|
|
|
template <class _CharT, class _Traits>
|
|
class _LIBCPP_TYPE_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;
|
|
|
|
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);
|
|
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
|
|
basic_ofstream(basic_ofstream&& __rhs);
|
|
#endif
|
|
|
|
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
|
|
basic_ofstream& operator=(basic_ofstream&& __rhs);
|
|
#endif
|
|
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();
|
|
|
|
private:
|
|
basic_filebuf<char_type, traits_type> __sb_;
|
|
};
|
|
|
|
template <class _CharT, class _Traits>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
basic_ofstream<_CharT, _Traits>::basic_ofstream()
|
|
: basic_ostream<char_type, traits_type>(&__sb_)
|
|
{
|
|
}
|
|
|
|
template <class _CharT, class _Traits>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
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 _LIBCPP_INLINE_VISIBILITY
|
|
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);
|
|
}
|
|
|
|
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
|
|
|
|
template <class _CharT, class _Traits>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
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 _LIBCPP_INLINE_VISIBILITY
|
|
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_HAS_NO_RVALUE_REFERENCES
|
|
|
|
template <class _CharT, class _Traits>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
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 _LIBCPP_INLINE_VISIBILITY
|
|
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 _LIBCPP_INLINE_VISIBILITY
|
|
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);
|
|
}
|
|
|
|
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 _LIBCPP_INLINE_VISIBILITY
|
|
void
|
|
basic_ofstream<_CharT, _Traits>::close()
|
|
{
|
|
if (__sb_.close() == 0)
|
|
this->setstate(ios_base::failbit);
|
|
}
|
|
|
|
// basic_fstream
|
|
|
|
template <class _CharT, class _Traits>
|
|
class _LIBCPP_TYPE_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;
|
|
|
|
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);
|
|
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
|
|
basic_fstream(basic_fstream&& __rhs);
|
|
#endif
|
|
|
|
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
|
|
basic_fstream& operator=(basic_fstream&& __rhs);
|
|
#endif
|
|
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();
|
|
|
|
private:
|
|
basic_filebuf<char_type, traits_type> __sb_;
|
|
};
|
|
|
|
template <class _CharT, class _Traits>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
basic_fstream<_CharT, _Traits>::basic_fstream()
|
|
: basic_iostream<char_type, traits_type>(&__sb_)
|
|
{
|
|
}
|
|
|
|
template <class _CharT, class _Traits>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
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 _LIBCPP_INLINE_VISIBILITY
|
|
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);
|
|
}
|
|
|
|
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
|
|
|
|
template <class _CharT, class _Traits>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
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 _LIBCPP_INLINE_VISIBILITY
|
|
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_HAS_NO_RVALUE_REFERENCES
|
|
|
|
template <class _CharT, class _Traits>
|
|
inline _LIBCPP_INLINE_VISIBILITY
|
|
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 _LIBCPP_INLINE_VISIBILITY
|
|
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 _LIBCPP_INLINE_VISIBILITY
|
|
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);
|
|
}
|
|
|
|
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 _LIBCPP_INLINE_VISIBILITY
|
|
void
|
|
basic_fstream<_CharT, _Traits>::close()
|
|
{
|
|
if (__sb_.close() == 0)
|
|
this->setstate(ios_base::failbit);
|
|
}
|
|
|
|
_LIBCPP_END_NAMESPACE_STD
|
|
|
|
#endif // _LIBCPP_FSTREAM
|