1 /* Copyright (C) 2010-2018 The RetroArch team
2 *
3 * ---------------------------------------------------------------------------------------
4 * The following license statement only applies to this file (file_stream_transforms.c).
5 * ---------------------------------------------------------------------------------------
6 *
7 * Permission is hereby granted, free of charge,
8 * to any person obtaining a copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation the rights to
10 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
11 * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
16 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
19 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
21 */
22
23 #include <string.h>
24 #include <stdarg.h>
25
26 #include <libretro.h>
27 #include <streams/file_stream.h>
28
rfopen(const char * path,const char * mode)29 RFILE* rfopen(const char *path, const char *mode)
30 {
31 RFILE *output = NULL;
32 unsigned int retro_mode = RETRO_VFS_FILE_ACCESS_READ;
33 bool position_to_end = false;
34
35 if (strstr(mode, "r"))
36 {
37 retro_mode = RETRO_VFS_FILE_ACCESS_READ;
38 if (strstr(mode, "+"))
39 {
40 retro_mode = RETRO_VFS_FILE_ACCESS_READ_WRITE |
41 RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING;
42 }
43 }
44 else if (strstr(mode, "w"))
45 {
46 retro_mode = RETRO_VFS_FILE_ACCESS_WRITE;
47 if (strstr(mode, "+"))
48 retro_mode = RETRO_VFS_FILE_ACCESS_READ_WRITE;
49 }
50 else if (strstr(mode, "a"))
51 {
52 retro_mode = RETRO_VFS_FILE_ACCESS_WRITE |
53 RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING;
54 position_to_end = true;
55 if (strstr(mode, "+"))
56 {
57 retro_mode = RETRO_VFS_FILE_ACCESS_READ_WRITE |
58 RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING;
59 }
60 }
61
62 output = filestream_open(path, retro_mode,
63 RETRO_VFS_FILE_ACCESS_HINT_NONE);
64 if (output && position_to_end)
65 filestream_seek(output, 0, RETRO_VFS_SEEK_POSITION_END);
66
67 return output;
68 }
69
rfclose(RFILE * stream)70 int rfclose(RFILE* stream)
71 {
72 return filestream_close(stream);
73 }
74
rftell(RFILE * stream)75 int64_t rftell(RFILE* stream)
76 {
77 return filestream_tell(stream);
78 }
79
rfseek(RFILE * stream,int64_t offset,int origin)80 int64_t rfseek(RFILE* stream, int64_t offset, int origin)
81 {
82 int seek_position = -1;
83 switch (origin)
84 {
85 case SEEK_SET:
86 seek_position = RETRO_VFS_SEEK_POSITION_START;
87 break;
88 case SEEK_CUR:
89 seek_position = RETRO_VFS_SEEK_POSITION_CURRENT;
90 break;
91 case SEEK_END:
92 seek_position = RETRO_VFS_SEEK_POSITION_END;
93 break;
94 }
95
96 return filestream_seek(stream, offset, seek_position);
97 }
98
rfread(void * buffer,size_t elem_size,size_t elem_count,RFILE * stream)99 int64_t rfread(void* buffer,
100 size_t elem_size, size_t elem_count, RFILE* stream)
101 {
102 return filestream_read(stream, buffer, elem_size * elem_count);
103 }
104
rfgets(char * buffer,int maxCount,RFILE * stream)105 char *rfgets(char *buffer, int maxCount, RFILE* stream)
106 {
107 return filestream_gets(stream, buffer, maxCount);
108 }
109
rfgetc(RFILE * stream)110 int rfgetc(RFILE* stream)
111 {
112 return filestream_getc(stream);
113 }
114
rfwrite(void const * buffer,size_t elem_size,size_t elem_count,RFILE * stream)115 int64_t rfwrite(void const* buffer,
116 size_t elem_size, size_t elem_count, RFILE* stream)
117 {
118 return filestream_write(stream, buffer, elem_size * elem_count);
119 }
120
rfputc(int character,RFILE * stream)121 int rfputc(int character, RFILE * stream)
122 {
123 return filestream_putc(stream, character);
124 }
125
rfprintf(RFILE * stream,const char * format,...)126 int rfprintf(RFILE * stream, const char * format, ...)
127 {
128 int result;
129 va_list vl;
130 va_start(vl, format);
131 result = filestream_vprintf(stream, format, vl);
132 va_end(vl);
133 return result;
134 }
135
rferror(RFILE * stream)136 int rferror(RFILE* stream)
137 {
138 return filestream_error(stream);
139 }
140
rfeof(RFILE * stream)141 int rfeof(RFILE* stream)
142 {
143 return filestream_eof(stream);
144 }
145