253 lines
6.8 KiB
C++
253 lines
6.8 KiB
C++
// Wrapper of C-language FILE struct -*- C++ -*-
|
|
|
|
// Copyright (C) 2000, 2001 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)
|
|
// any later version.
|
|
|
|
// This library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// 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.
|
|
|
|
// 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.
|
|
|
|
//
|
|
// ISO C++ 14882: 27.8 File-based streams
|
|
//
|
|
|
|
namespace std
|
|
{
|
|
// Generic definitions for __basic_file
|
|
template<typename _CharT>
|
|
__basic_file<_CharT>::__basic_file(__c_lock* /*__lock*/)
|
|
: _M_cfile(NULL), _M_cfile_created(false) { }
|
|
|
|
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)
|
|
{
|
|
__basic_file* __ret = NULL;
|
|
|
|
if (!this->is_open() && __file)
|
|
{
|
|
_M_cfile = __file;
|
|
_M_cfile_created = false;
|
|
__ret = this;
|
|
}
|
|
|
|
return __ret;
|
|
}
|
|
|
|
template<typename _CharT>
|
|
_CharT
|
|
__basic_file<_CharT>::sys_getc()
|
|
{
|
|
return getc (_M_cfile);
|
|
}
|
|
|
|
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); }
|
|
|
|
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); }
|
|
|
|
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); }
|
|
|
|
template<typename _CharT>
|
|
int
|
|
__basic_file<_CharT>::sync()
|
|
{ return fflush(_M_cfile); }
|
|
|
|
// NB: Unused.
|
|
template<typename _CharT>
|
|
int
|
|
__basic_file<_CharT>::overflow(int /*__c*/)
|
|
{ return EOF; }
|
|
|
|
// NB: Unused.
|
|
template<typename _CharT>
|
|
int
|
|
__basic_file<_CharT>::underflow()
|
|
{ return EOF; }
|
|
|
|
// NB: Unused.
|
|
template<typename _CharT>
|
|
int
|
|
__basic_file<_CharT>::uflow()
|
|
{ return EOF; }
|
|
|
|
// 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); }
|
|
|
|
// NB: Unused.
|
|
template<typename _CharT>
|
|
int
|
|
__basic_file<_CharT>::doallocate()
|
|
{ return EOF; }
|
|
|
|
// NB: Unused.
|
|
template<typename _CharT>
|
|
streamsize
|
|
__basic_file<_CharT>::sys_read(_CharT* __s, streamsize __n)
|
|
{ return fread(__s, 1, __n, _M_cfile); }
|
|
|
|
// NB: Unused.
|
|
template<typename _CharT>
|
|
streamsize
|
|
__basic_file<_CharT>::sys_write(const _CharT* __s, streamsize __n)
|
|
{ return fwrite(__s, 1, __n, _M_cfile); }
|
|
|
|
// 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); }
|
|
|
|
// NB: Unused.
|
|
template<typename _CharT>
|
|
int
|
|
__basic_file<_CharT>::sys_stat(void* /*__v*/)
|
|
{ return EOF; }
|
|
|
|
// NB: Unused.
|
|
template<typename _CharT>
|
|
int
|
|
__basic_file<_CharT>::showmanyc()
|
|
{ return EOF; }
|
|
|
|
// NB: Unused.
|
|
template<typename _CharT>
|
|
void
|
|
__basic_file<_CharT>::imbue(void* /*__v*/) { }
|
|
} // namespace std
|