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https://github.com/libretro/beetle-psx-libretro.git
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98 lines
2.3 KiB
C++
98 lines
2.3 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 "mednafen.h"
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#include "error.h"
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#include "Stream.h"
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#include "FileStream.h"
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#include <stdarg.h>
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#include <string.h>
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FileStream::FileStream(const char *path, const int mode)
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{
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fp = filestream_open(path, (mode == MODE_WRITE || mode == MODE_WRITE_INPLACE) ? RETRO_VFS_FILE_ACCESS_WRITE : RETRO_VFS_FILE_ACCESS_READ, RETRO_VFS_FILE_ACCESS_HINT_NONE);
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if (!fp)
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{
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ErrnoHolder ene(errno);
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MDFN_Error(ene.Errno(), "Error opening file:\n%s\n%s", path, 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_t FileStream::read(void *data, uint64_t count, bool error_on_eos)
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{
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if (!fp)
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return 0;
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return filestream_read(fp, data, count);
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}
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void FileStream::write(const void *data, uint64_t count)
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{
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if (!fp)
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return;
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filestream_write(fp, data, count);
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}
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void FileStream::seek(int64_t offset, int whence)
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{
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int seek_position = -1;
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if (!fp)
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return;
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switch (whence)
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{
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case SEEK_SET:
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seek_position = RETRO_VFS_SEEK_POSITION_START;
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break;
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case SEEK_CUR:
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seek_position = RETRO_VFS_SEEK_POSITION_CURRENT;
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break;
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case SEEK_END:
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seek_position = RETRO_VFS_SEEK_POSITION_END;
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break;
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}
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filestream_seek(fp, offset, seek_position);
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}
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uint64_t FileStream::tell(void)
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{
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if (!fp)
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return -1;
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return filestream_tell(fp);
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}
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uint64_t FileStream::size(void)
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{
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if (!fp)
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return -1;
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return filestream_get_size(fp);
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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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return;
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filestream_close(fp);
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}
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