mirror of
https://github.com/libretro/beetle-lynx-libretro.git
synced 2024-12-04 06:21:00 +00:00
173 lines
3.4 KiB
C++
173 lines
3.4 KiB
C++
/* Mednafen - Multi-system Emulator
|
|
*
|
|
* This program 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 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <sys/stat.h>
|
|
#include "mednafen.h"
|
|
#include "FileWrapper.h"
|
|
|
|
#include <trio/trio.h>
|
|
#include <stdarg.h>
|
|
#include <string.h>
|
|
|
|
#ifdef _WIN32
|
|
#include <io.h>
|
|
#else
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
// Some really bad preprocessor abuse follows to handle platforms that don't have fseeko and ftello...and of course
|
|
// for largefile support on Windows:
|
|
|
|
#define fseeko fseek
|
|
#define ftello ftell
|
|
|
|
#if SIZEOF_OFF_T == 4
|
|
|
|
#ifdef HAVE_FOPEN64
|
|
#define fopen fopen64
|
|
#endif
|
|
|
|
#ifdef HAVE_FTELLO64
|
|
#undef ftello
|
|
#define ftello ftello64
|
|
#endif
|
|
|
|
#ifdef HAVE_FSEEKO64
|
|
#undef fseeko
|
|
#define fseeko fseeko64
|
|
#endif
|
|
|
|
#ifdef HAVE_FSTAT64
|
|
#define fstat fstat64
|
|
#define stat stat64
|
|
#endif
|
|
|
|
#endif
|
|
|
|
// For special uses, IE in classes that take a path or a FileWrapper & in the constructor, and the FileWrapper non-pointer member
|
|
// is in the initialization list for the path constructor but not the constructor with FileWrapper&
|
|
|
|
FileWrapper::FileWrapper(const char *path, const int mode, const char *purpose) : OpenedMode(mode)
|
|
{
|
|
if(mode == MODE_WRITE)
|
|
fp = fopen(path, "wb");
|
|
else
|
|
fp = fopen(path, "rb");
|
|
|
|
if(!fp)
|
|
{
|
|
ErrnoHolder ene(errno);
|
|
|
|
throw(MDFN_Error(ene.Errno(), _("Error opening file %s"), ene.StrError()));
|
|
}
|
|
}
|
|
|
|
FileWrapper::~FileWrapper()
|
|
{
|
|
close();
|
|
}
|
|
|
|
void FileWrapper::close(void)
|
|
{
|
|
if(fp)
|
|
{
|
|
FILE *tmp = fp;
|
|
|
|
fp = NULL;
|
|
|
|
if(fclose(tmp) == EOF)
|
|
{
|
|
ErrnoHolder ene(errno);
|
|
|
|
throw(MDFN_Error(ene.Errno(), _("Error closing opened file %s"), ene.StrError()));
|
|
}
|
|
}
|
|
}
|
|
|
|
uint64 FileWrapper::read(void *data, uint64 count, bool error_on_eof)
|
|
{
|
|
uint64 read_count = fread(data, 1, count, fp);
|
|
|
|
return(read_count);
|
|
}
|
|
|
|
void FileWrapper::flush(void)
|
|
{
|
|
fflush(fp);
|
|
}
|
|
|
|
void FileWrapper::write(const void *data, uint64 count)
|
|
{
|
|
fwrite(data, 1, count, fp);
|
|
}
|
|
|
|
int FileWrapper::scanf(const char *format, ...)
|
|
{
|
|
va_list ap;
|
|
int ret;
|
|
|
|
va_start(ap, format);
|
|
|
|
ret = trio_vfscanf(fp, format, ap);
|
|
|
|
va_end(ap);
|
|
|
|
return ret;
|
|
}
|
|
|
|
void FileWrapper::put_char(int c)
|
|
{
|
|
fputc(c, fp);
|
|
}
|
|
|
|
void FileWrapper::put_string(const char *str)
|
|
{
|
|
write(str, strlen(str));
|
|
}
|
|
|
|
// We need to decide whether to prohibit NULL characters in output and input strings via std::string.
|
|
// Yes for correctness, no for potential security issues(though unlikely in context all things considered).
|
|
void FileWrapper::put_string(const std::string &str)
|
|
{
|
|
write(str.data(), str.size());
|
|
}
|
|
|
|
char *FileWrapper::get_line(char *buf_s, int buf_size)
|
|
{
|
|
return ::fgets(buf_s, buf_size, fp);
|
|
}
|
|
|
|
|
|
void FileWrapper::seek(int64 offset, int whence)
|
|
{
|
|
fseeko(fp, offset, whence);
|
|
}
|
|
|
|
int64 FileWrapper::size(void)
|
|
{
|
|
struct stat buf;
|
|
|
|
fstat(fileno(fp), &buf);
|
|
|
|
return(buf.st_size);
|
|
}
|
|
|
|
int64 FileWrapper::tell(void)
|
|
{
|
|
return ftello(fp);
|
|
}
|