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https://github.com/libretro/beetle-lynx-libretro.git
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146 lines
2.5 KiB
C++
146 lines
2.5 KiB
C++
// TODO/WIP
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/* Mednafen - Multi-system Emulator
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <sys/stat.h>
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#include "mednafen.h"
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#include "Stream.h"
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#include "FileStream.h"
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#include <trio/trio.h>
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#include <stdarg.h>
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#include <string.h>
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#ifdef _WIN32
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#include <io.h>
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#else
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#include <unistd.h>
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#endif
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#define fseeko fseek
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#define ftello ftell
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#if SIZEOF_OFF_T == 4
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#ifdef HAVE_FOPEN64
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#define fopen fopen64
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#endif
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#ifdef HAVE_FTELLO64
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#undef ftello
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#define ftello ftello64
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#endif
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#ifdef HAVE_FSEEKO64
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#undef fseeko
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#define fseeko fseeko64
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#endif
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#ifdef HAVE_FSTAT64
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#define fstat fstat64
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#define stat stat64
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#endif
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#endif
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FileStream::FileStream(const char *path, const int mode): OpenedMode(mode)
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{
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if(mode == MODE_WRITE)
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fp = fopen(path, "wb");
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else
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fp = fopen(path, "rb");
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if(!fp)
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{
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ErrnoHolder ene(errno);
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throw(MDFN_Error(ene.Errno(), _("Error opening file %s"), ene.StrError()));
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}
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}
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FileStream::~FileStream()
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{
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}
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uint64 FileStream::attributes(void)
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{
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uint64 ret = ATTRIBUTE_SEEKABLE;
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switch(OpenedMode)
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{
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case MODE_READ:
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ret |= ATTRIBUTE_READABLE;
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break;
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case MODE_WRITE_SAFE:
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case MODE_WRITE:
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ret |= ATTRIBUTE_WRITEABLE;
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break;
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}
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return ret;
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}
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uint64 FileStream::read(void *data, uint64 count, bool error_on_eos)
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{
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uint64 read_count = fread(data, 1, count, fp);
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return(read_count);
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}
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void FileStream::write(const void *data, uint64 count)
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{
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fwrite(data, 1, count, fp);
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}
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void FileStream::seek(int64 offset, int whence)
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{
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fseeko(fp, offset, whence);
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}
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int64 FileStream::tell(void)
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{
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return ftello(fp);
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}
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int64 FileStream::size(void)
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{
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struct stat buf;
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fstat(fileno(fp), &buf);
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return(buf.st_size);
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}
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void FileStream::close(void)
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{
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if(fp)
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{
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FILE *tmp = fp;
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fp = NULL;
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if(fclose(tmp) == EOF)
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{
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ErrnoHolder ene(errno);
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throw(MDFN_Error(ene.Errno(), _("Error closing opened file %s"), ene.StrError()));
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}
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}
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}
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