226a5691 |
1 | /* Copyright (C) 2010-2020 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 | |
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 | |
70 | int rfclose(RFILE* stream) |
71 | { |
72 | return filestream_close(stream); |
73 | } |
74 | |
75 | int64_t rftell(RFILE* stream) |
76 | { |
77 | return filestream_tell(stream); |
78 | } |
79 | |
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 | |
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) / elem_size); |
103 | } |
104 | |
105 | char *rfgets(char *buffer, int maxCount, RFILE* stream) |
106 | { |
107 | return filestream_gets(stream, buffer, maxCount); |
108 | } |
109 | |
110 | int rfgetc(RFILE* stream) |
111 | { |
112 | return filestream_getc(stream); |
113 | } |
114 | |
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 | |
121 | int rfputc(int character, RFILE * stream) |
122 | { |
123 | return filestream_putc(stream, character); |
124 | } |
125 | |
126 | int64_t rfflush(RFILE * stream) |
127 | { |
128 | return filestream_flush(stream); |
129 | } |
130 | |
131 | int rfprintf(RFILE * stream, const char * format, ...) |
132 | { |
133 | int result; |
134 | va_list vl; |
135 | va_start(vl, format); |
136 | result = filestream_vprintf(stream, format, vl); |
137 | va_end(vl); |
138 | return result; |
139 | } |
140 | |
141 | int rferror(RFILE* stream) |
142 | { |
143 | return filestream_error(stream); |
144 | } |
145 | |
146 | int rfeof(RFILE* stream) |
147 | { |
148 | return filestream_eof(stream); |
149 | } |
150 | |
151 | int rfscanf(RFILE * stream, const char * format, ...) |
152 | { |
153 | int result; |
154 | va_list vl; |
155 | va_start(vl, format); |
156 | result = filestream_scanf(stream, format, vl); |
157 | va_end(vl); |
158 | return result; |
159 | } |