diff options
Diffstat (limited to 'contrib/libstdc++/config/io/basic_file_stdio.cc')
| -rw-r--r-- | contrib/libstdc++/config/io/basic_file_stdio.cc | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/contrib/libstdc++/config/io/basic_file_stdio.cc b/contrib/libstdc++/config/io/basic_file_stdio.cc new file mode 100644 index 0000000..93ca6bc --- /dev/null +++ b/contrib/libstdc++/config/io/basic_file_stdio.cc @@ -0,0 +1,187 @@ +// Wrapper of C-language FILE struct -*- C++ -*- + +// Copyright (C) 2000, 2001, 2002 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 +// + +#include <bits/basic_file.h> + +namespace std +{ + // Definitions for __basic_file<char>. + __basic_file<char>::__basic_file(__c_lock* /*__lock*/) + : _M_cfile(NULL), _M_cfile_created(false) { } + + __basic_file<char>::~__basic_file() + { this->close(); } + + void + __basic_file<char>::_M_open_mode(ios_base::openmode __mode, int&, int&, + 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"); + } + + __basic_file<char>* + __basic_file<char>::sys_open(__c_file* __file, ios_base::openmode) + { + __basic_file* __ret = NULL; + if (!this->is_open() && __file) + { + _M_cfile = __file; + _M_cfile_created = false; + __ret = this; + } + return __ret; + } + + __basic_file<char>* + __basic_file<char>::sys_open(int __fd, ios_base::openmode __mode, + bool __del) + { + __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() && (_M_cfile = fdopen(__fd, __c_mode))) + { + // Iff __del is true, then close will fclose the fd. + _M_cfile_created = __del; + + if (__fd == 0) + setvbuf(_M_cfile, reinterpret_cast<char*>(NULL), _IONBF, 0); + + __ret = this; + } + return __ret; + } + + int + __basic_file<char>::sys_getc() + { return getc(_M_cfile); } + + int + __basic_file<char>::sys_ungetc(int __c) + { return ungetc(__c, _M_cfile); } + + __basic_file<char>* + __basic_file<char>::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; + } + + bool + __basic_file<char>::is_open() const + { return _M_cfile != 0; } + + int + __basic_file<char>::fd() + { return fileno(_M_cfile) ; } + + __basic_file<char>* + __basic_file<char>::close() + { + __basic_file* __retval = static_cast<__basic_file*>(NULL); + if (this->is_open()) + { + fflush(_M_cfile); + if ((_M_cfile_created && fclose(_M_cfile) == 0) || !_M_cfile_created) + { + _M_cfile = 0; + __retval = this; + } + } + return __retval; + } + + streamsize + __basic_file<char>::xsgetn(char* __s, streamsize __n) + { return fread(__s, 1, __n, _M_cfile); } + + streamsize + __basic_file<char>::xsputn(const char* __s, streamsize __n) + { return fwrite(__s, 1, __n, _M_cfile); } + + streamoff + __basic_file<char>::seekoff(streamoff __off, ios_base::seekdir __way, + ios_base::openmode /*__mode*/) + { + fseek(_M_cfile, __off, __way); + return ftell(_M_cfile); + } + + streamoff + __basic_file<char>::seekpos(streamoff __pos, ios_base::openmode /*__mode*/) + { + fseek(_M_cfile, __pos, ios_base::beg); + return ftell(_M_cfile); + } + + int + __basic_file<char>::sync() + { return fflush(_M_cfile); } +} // namespace std |
