1 // TODO/WIP
2
3 /* Mednafen - Multi-system Emulator
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20 #include "mednafen.h"
21 #include "error.h"
22 #include "Stream.h"
23 #include "FileStream.h"
24
25 #include <stdarg.h>
26 #include <string.h>
27
FileStream(const char * path,const int mode)28 FileStream::FileStream(const char *path, const int mode)
29 {
30 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);
31
32 if (!fp)
33 {
34 ErrnoHolder ene(errno);
35
36 MDFN_Error(ene.Errno(), "Error opening file:\n%s\n%s", path, ene.StrError());
37 }
38 }
39
~FileStream()40 FileStream::~FileStream()
41 {
42 }
43
read(void * data,uint64_t count,bool error_on_eos)44 uint64_t FileStream::read(void *data, uint64_t count, bool error_on_eos)
45 {
46 if (!fp)
47 return 0;
48 return filestream_read(fp, data, count);
49 }
50
write(const void * data,uint64_t count)51 void FileStream::write(const void *data, uint64_t count)
52 {
53 if (!fp)
54 return;
55 filestream_write(fp, data, count);
56 }
57
seek(int64_t offset,int whence)58 void FileStream::seek(int64_t offset, int whence)
59 {
60 int seek_position = -1;
61 if (!fp)
62 return;
63 switch (whence)
64 {
65 case SEEK_SET:
66 seek_position = RETRO_VFS_SEEK_POSITION_START;
67 break;
68 case SEEK_CUR:
69 seek_position = RETRO_VFS_SEEK_POSITION_CURRENT;
70 break;
71 case SEEK_END:
72 seek_position = RETRO_VFS_SEEK_POSITION_END;
73 break;
74 }
75 filestream_seek(fp, offset, seek_position);
76 }
77
tell(void)78 uint64_t FileStream::tell(void)
79 {
80 if (!fp)
81 return -1;
82 return filestream_tell(fp);
83 }
84
size(void)85 uint64_t FileStream::size(void)
86 {
87 if (!fp)
88 return -1;
89 return filestream_get_size(fp);
90 }
91
close(void)92 void FileStream::close(void)
93 {
94 if (!fp)
95 return;
96 filestream_close(fp);
97 }
98