269 lines
6.8 KiB
C++
269 lines
6.8 KiB
C++
// Wrapper of C-language FILE struct -*- C++ -*-
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// Copyright (C) 2000 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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//
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// ISO C++ 14882: 27.8 File-based streams
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//
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#include <bits/basic_file.h>
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#include <libioP.h>
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#include <fcntl.h> // Solaris needs for O_* macros
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namespace std {
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__basic_file::__basic_file(__c_lock* __lock)
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{
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this->_lock = __lock;
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_IO_init(this, 0);
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_IO_file_init(this);
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}
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int
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__basic_file::get_fileno(void)
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{ return _fileno; }
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__basic_file::~__basic_file()
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{
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if (_IO_file_is_open(this))
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{
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_IO_do_flush(this);
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if (!(_IO_file_flags & _IO_DELETE_DONT_CLOSE))
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_IO_SYSCLOSE(this);
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}
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else
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_IO_un_link(this);
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}
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__basic_file*
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__basic_file::sys_open(int __fd, ios_base::openmode __mode)
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{
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__basic_file* __retval = NULL;
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bool __testi = __mode & ios_base::in;
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bool __testo = __mode & ios_base::out;
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#ifdef O_BINARY
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bool __testb = __mode & ios_base::binary;
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#endif
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int __p_mode = 0;
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int __rw_mode = _IO_NO_READS + _IO_NO_WRITES;
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if (__testi)
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{
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__p_mode = O_RDONLY;
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__rw_mode = _IO_NO_WRITES;
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}
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if (__testo)
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{
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__p_mode = O_WRONLY | O_TRUNC;
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__rw_mode = _IO_NO_READS;
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}
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#ifdef O_BINARY
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if (__testb)
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__p_mode |= O_BINARY;
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#endif
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if (__fd >= 0)
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{
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__retval = this;
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_fileno = __fd;
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}
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int __mask = _IO_NO_READS + _IO_NO_WRITES + _IO_IS_APPENDING;
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_IO_file_flags = (_IO_file_flags & ~__mask) | (__rw_mode & __mask);
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_IO_link_in(this);
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return __retval;
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}
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__basic_file*
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__basic_file::open(const char* __name, ios_base::openmode __mode,
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int __prot = 0664)
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{
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__basic_file* __retval = NULL;
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#ifdef O_BINARY
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bool __testb = __mode & ios_base::binary;
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#endif
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bool __testi = __mode & ios_base::in;
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bool __testo = __mode & ios_base::out;
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bool __testt = __mode & ios_base::trunc;
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bool __testa = __mode & ios_base::app;
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int __p_mode = 0;
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int __rw_mode = _IO_NO_READS + _IO_NO_WRITES;
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if (!__testi && __testo && !__testt && !__testa)
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{
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__p_mode = O_WRONLY | O_TRUNC | O_CREAT;
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__rw_mode = _IO_NO_READS;
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}
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if (!__testi && __testo && !__testt && __testa)
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{
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__p_mode = O_WRONLY | O_APPEND | O_CREAT;
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__rw_mode = _IO_NO_READS | _IO_IS_APPENDING;
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}
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if (!__testi && __testo && __testt && !__testa)
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{
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__p_mode = O_WRONLY | O_TRUNC | O_CREAT;
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__rw_mode = _IO_NO_READS;
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}
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if (__testi && !__testo && !__testt && !__testa)
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{
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__p_mode = O_RDONLY;
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__rw_mode = _IO_NO_WRITES;
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}
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if (__testi && __testo && !__testt && !__testa)
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{
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__p_mode = O_RDWR;
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__rw_mode = 0;
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}
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if (__testi && __testo && __testt && !__testa)
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{
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__p_mode = O_RDWR | O_TRUNC | O_CREAT;
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__rw_mode = 0;
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}
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#ifdef O_BINARY
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if (__testb)
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__p_mode |= O_BINARY;
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#endif
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if ( !_IO_file_is_open(this))
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{
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#if _G_HAVE_IO_FILE_OPEN
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__c_file_type* __f;
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__f = _IO_file_open(this, __name, __p_mode, __prot, __rw_mode, 0);
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__retval = __f ? this: NULL;
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#else
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int __i = ::open(__name, __p_mode, __prot);
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if (__i >= 0)
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{
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__retval = this;
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_fileno = __i;
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}
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int __mask = _IO_NO_READS + _IO_NO_WRITES + _IO_IS_APPENDING;
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_IO_file_flags = (_IO_file_flags & ~__mask) | (__rw_mode & __mask);
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_IO_link_in(this);
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#endif
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}
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return __retval;
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}
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bool
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__basic_file::is_open() { return _fileno >= 0; }
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__basic_file*
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__basic_file::close()
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{
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bool __testopen = _IO_file_close_it(this);
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return __testopen ? static_cast<__basic_file*>(NULL) : this;
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}
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// NB: Unused.
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int
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__basic_file::overflow(int __c) { return _IO_file_overflow(this, __c); }
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// NB: Unused.
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int
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__basic_file::underflow() { return _IO_file_underflow(this); }
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// NB: Unused.
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int
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__basic_file::uflow() { return _IO_default_uflow(this); }
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// NB: Unused.
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int
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__basic_file::pbackfail(int __c)
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{ return _IO_default_pbackfail(this, __c); }
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streamsize
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__basic_file::xsputn(const char* __s, streamsize __n)
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{ return _IO_file_xsputn(this, __s, __n); }
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streamsize
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__basic_file::xsgetn(char* __s, streamsize __n)
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{ return _IO_default_xsgetn(this, __s, __n); }
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streamoff
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__basic_file::seekoff(streamoff __off, ios_base::seekdir __way,
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ios_base::openmode __mode)
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{ return _IO_file_seekoff(this, __off, __way, __mode); }
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streamoff
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__basic_file::seekpos(streamoff __pos, ios_base::openmode __mode)
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{ return _IO_file_seekoff(this, __pos, ios_base::beg, __mode); }
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// NB: Unused.
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streambuf*
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__basic_file::setbuf(char* __b, int __len)
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{ return (streambuf*) _IO_file_setbuf(this,__b, __len); }
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int
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__basic_file::sync()
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{ return _IO_file_sync(this); }
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// NB: Unused.
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int
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__basic_file::doallocate()
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{ return _IO_file_doallocate(this); }
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// NB: Unused.
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streamsize
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__basic_file::sys_read(char* __s, streamsize __n)
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{ return _IO_file_read(this, __s, __n); }
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// NB: Unused.
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streamsize
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__basic_file::sys_write(const char* __s, streamsize __n)
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{ return _IO_file_write(this, __s, __n); }
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// NB: Unused.
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streamoff
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__basic_file::sys_seek(streamoff __pos, ios_base::seekdir __way)
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{ return _IO_file_seek(this, __pos, __way); }
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// NB: Unused.
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int
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__basic_file::sys_close() { return _IO_file_close(this); }
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// NB: Unused.
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int
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__basic_file::sys_stat(void* __v) { return _IO_file_stat(this, __v); }
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// NB: Unused.
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int
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__basic_file::showmanyc() { return EOF; }
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// NB: Unused.
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void
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__basic_file::imbue(void* /*__v*/) { }
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} // namespace std
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