// Wrapper of C-language FILE struct -*- C++ -*-
-// Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+// Copyright (C) 2000-2020 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
-// Free Software Foundation; either version 2, or (at your option)
+// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
-// You should have received a copy of the GNU General Public License along
-// with this library; see the file COPYING. If not, write to the Free
-// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
-// USA.
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
-// As a special exception, you may use this file as part of a free software
-// library without restriction. Specifically, if other files instantiate
-// templates or use macros or inline functions from this file, or you compile
-// this file and link it with other files to produce an executable, this
-// file does not by itself cause the resulting executable to be covered by
-// the GNU General Public License. This exception does not however
-// invalidate any other reasons why the executable file might be covered by
-// the GNU General Public License.
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
//
// ISO C++ 14882: 27.8 File-based streams
//
-namespace std
+/** @file bits/basic_file.h
+ * This is an internal header file, included by other library headers.
+ * Do not attempt to use it directly. @headername{ios}
+ */
+
+#ifndef _GLIBCXX_BASIC_FILE_STDIO_H
+#define _GLIBCXX_BASIC_FILE_STDIO_H 1
+
+#pragma GCC system_header
+
+#include <bits/c++config.h>
+#include <bits/c++io.h> // for __c_lock and __c_file
+#include <bits/move.h> // for swap
+#include <ios>
+
+namespace std _GLIBCXX_VISIBILITY(default)
{
- // Generic definitions for __basic_file
- template<typename _CharT>
- __basic_file<_CharT>::__basic_file(__c_lock* /*__lock*/)
- : _M_cfile(NULL), _M_cfile_created(false) { }
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+ // Generic declaration.
template<typename _CharT>
- __basic_file<_CharT>::~__basic_file()
- {
- if (this->is_open())
- {
- fflush(_M_cfile);
- this->close();
- }
- }
-
- template<typename _CharT>
- void
- __basic_file<_CharT>::_M_open_mode(ios_base::openmode __mode,
- int& /*__p_mode*/, int& /*__rw_mode*/,
- char* __c_mode)
- {
- bool __testb = __mode & ios_base::binary;
- bool __testi = __mode & ios_base::in;
- bool __testo = __mode & ios_base::out;
- bool __testt = __mode & ios_base::trunc;
- bool __testa = __mode & ios_base::app;
-
- if (!__testi && __testo && !__testt && !__testa)
- strcpy(__c_mode, "w");
- if (!__testi && __testo && !__testt && __testa)
- strcpy(__c_mode, "a");
- if (!__testi && __testo && __testt && !__testa)
- strcpy(__c_mode, "w");
- if (__testi && !__testo && !__testt && !__testa)
- strcpy(__c_mode, "r");
- if (__testi && __testo && !__testt && !__testa)
- strcpy(__c_mode, "r+");
- if (__testi && __testo && __testt && !__testa)
- strcpy(__c_mode, "w+");
- if (__testb)
- strcat(__c_mode, "b");
- }
-
- template<typename _CharT>
- __basic_file<_CharT>*
- __basic_file<_CharT>::sys_open(__c_file_type* __file, ios_base::openmode)
+ class __basic_file;
+
+ // Specialization.
+ template<>
+ class __basic_file<char>
{
- __basic_file* __ret = NULL;
+ // Underlying data source/sink.
+ __c_file* _M_cfile;
- if (!this->is_open() && __file)
- {
- _M_cfile = __file;
- _M_cfile_created = false;
- __ret = this;
- }
+ // True iff we opened _M_cfile, and thus must close it ourselves.
+ bool _M_cfile_created;
- return __ret;
- }
+ public:
+ __basic_file(__c_lock* __lock = 0) throw ();
- template<typename _CharT>
- _CharT
- __basic_file<_CharT>::sys_getc()
- {
- return getc (_M_cfile);
- }
+#if __cplusplus >= 201103L
+ __basic_file(__basic_file&& __rv, __c_lock* = 0) noexcept
+ : _M_cfile(__rv._M_cfile), _M_cfile_created(__rv._M_cfile_created)
+ {
+ __rv._M_cfile = nullptr;
+ __rv._M_cfile_created = false;
+ }
- template<typename _CharT>
- _CharT
- __basic_file<_CharT>::sys_ungetc(_CharT __s)
- {
- return ungetc (__s, _M_cfile);
- }
-
- template<typename _CharT>
- __basic_file<_CharT>*
- __basic_file<_CharT>::open(const char* __name, ios_base::openmode __mode,
- int /*__prot*/)
- {
- __basic_file* __ret = NULL;
- int __p_mode = 0;
- int __rw_mode = 0;
- char __c_mode[4];
-
- _M_open_mode(__mode, __p_mode, __rw_mode, __c_mode);
-
- if (!this->is_open())
- {
- if ((_M_cfile = fopen(__name, __c_mode)))
- {
- _M_cfile_created = true;
- __ret = this;
- }
- }
- return __ret;
- }
-
- template<typename _CharT>
- bool
- __basic_file<_CharT>::is_open() { return _M_cfile != 0; }
-
- template<typename _CharT>
- __basic_file<_CharT>*
- __basic_file<_CharT>::close()
- {
- __basic_file* __retval = static_cast<__basic_file*>(NULL);
- if (_M_cfile_created && fclose(_M_cfile))
- __retval = this;
- return __retval;
- }
-
- template<typename _CharT>
- streamsize
- __basic_file<_CharT>::xsgetn(_CharT* __s, streamsize __n)
- { return fread(__s, 1, __n, _M_cfile); }
+ __basic_file& operator=(const __basic_file&) = delete;
+ __basic_file& operator=(__basic_file&&) = delete;
- template<typename _CharT>
- streamsize
- __basic_file<_CharT>::xsputn(const _CharT* __s, streamsize __n)
- { return fwrite(__s, 1, __n, _M_cfile); }
-
- template<typename _CharT>
- streamoff
- __basic_file<_CharT>::seekoff(streamoff __off, ios_base::seekdir __way,
- ios_base::openmode /*__mode*/)
- { fseek(_M_cfile, __off, __way); return ftell(_M_cfile); }
+ void
+ swap(__basic_file& __f) noexcept
+ {
+ std::swap(_M_cfile, __f._M_cfile);
+ std::swap(_M_cfile_created, __f._M_cfile_created);
+ }
+#endif
- template<typename _CharT>
- streamoff
- __basic_file<_CharT>::seekpos(streamoff __pos,
- ios_base::openmode /*__mode*/)
- { fseek(_M_cfile, __pos, ios_base::beg); return ftell(_M_cfile); }
+ __basic_file*
+ open(const char* __name, ios_base::openmode __mode, int __prot = 0664);
- template<typename _CharT>
- int
- __basic_file<_CharT>::sync()
- { return fflush(_M_cfile); }
+#if _GLIBCXX_HAVE__WFOPEN && _GLIBCXX_USE_WCHAR_T
+ __basic_file*
+ open(const wchar_t* __name, ios_base::openmode __mode);
+#endif
- // NB: Unused.
- template<typename _CharT>
- int
- __basic_file<_CharT>::overflow(int /*__c*/)
- { return EOF; }
+ __basic_file*
+ sys_open(__c_file* __file, ios_base::openmode);
- // NB: Unused.
- template<typename _CharT>
- int
- __basic_file<_CharT>::underflow()
- { return EOF; }
+ __basic_file*
+ sys_open(int __fd, ios_base::openmode __mode) throw ();
- // NB: Unused.
- template<typename _CharT>
- int
- __basic_file<_CharT>::uflow()
- { return EOF; }
+ __basic_file*
+ close();
- // NB: Unused.
- template<typename _CharT>
- int
- __basic_file<_CharT>::pbackfail(int /*__c*/)
- { return EOF; }
-
- // NB: Unused.
- template<typename _CharT>
- streambuf*
- __basic_file<_CharT>::setbuf(_CharT* /*__b*/, int /*__len*/)
- { return reinterpret_cast<streambuf*>(this); }
+ _GLIBCXX_PURE bool
+ is_open() const throw ();
- // NB: Unused.
- template<typename _CharT>
- int
- __basic_file<_CharT>::doallocate()
- { return EOF; }
+ _GLIBCXX_PURE int
+ fd() throw ();
- // NB: Unused.
- template<typename _CharT>
- streamsize
- __basic_file<_CharT>::sys_read(_CharT* __s, streamsize __n)
- { return fread(__s, 1, __n, _M_cfile); }
+ _GLIBCXX_PURE __c_file*
+ file() throw ();
- // NB: Unused.
- template<typename _CharT>
- streamsize
- __basic_file<_CharT>::sys_write(const _CharT* __s, streamsize __n)
- { return fwrite(__s, 1, __n, _M_cfile); }
+ ~__basic_file();
- // NB: Unused.
- template<typename _CharT>
- streamoff
- __basic_file<_CharT>::sys_seek(streamoff __pos, ios_base::seekdir __way)
- {
- fseek(_M_cfile, __pos, __way);
- return ftell(_M_cfile);
- }
-
- // NB: Unused.
- template<typename _CharT>
- int
- __basic_file<_CharT>::sys_close()
- { return fclose(_M_cfile); }
+ streamsize
+ xsputn(const char* __s, streamsize __n);
- // NB: Unused.
- template<typename _CharT>
- int
- __basic_file<_CharT>::sys_stat(void* /*__v*/)
- { return EOF; }
+ streamsize
+ xsputn_2(const char* __s1, streamsize __n1,
+ const char* __s2, streamsize __n2);
- // NB: Unused.
- template<typename _CharT>
- int
- __basic_file<_CharT>::showmanyc()
- { return EOF; }
+ streamsize
+ xsgetn(char* __s, streamsize __n);
- // NB: Unused.
- template<typename _CharT>
- void
- __basic_file<_CharT>::imbue(void* /*__v*/) { }
-} // namespace std
+ streamoff
+ seekoff(streamoff __off, ios_base::seekdir __way) throw ();
+
+ int
+ sync();
+
+ streamsize
+ showmanyc();
+ };
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
+
+#endif
projects / thirdparty / gcc.git / blobdiff