Commit | Line | Data |
---|---|---|
3719602c PC |
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 | if (!stream) | |
73 | return EOF; | |
74 | ||
75 | return filestream_close(stream); | |
76 | } | |
77 | ||
78 | int64_t rftell(RFILE* stream) | |
79 | { | |
80 | if (!stream) | |
81 | return -1; | |
82 | ||
83 | return filestream_tell(stream); | |
84 | } | |
85 | ||
86 | int64_t rfseek(RFILE* stream, int64_t offset, int origin) | |
87 | { | |
88 | int seek_position = -1; | |
89 | ||
90 | if (!stream) | |
91 | return -1; | |
92 | ||
93 | switch (origin) | |
94 | { | |
95 | case SEEK_SET: | |
96 | seek_position = RETRO_VFS_SEEK_POSITION_START; | |
97 | break; | |
98 | case SEEK_CUR: | |
99 | seek_position = RETRO_VFS_SEEK_POSITION_CURRENT; | |
100 | break; | |
101 | case SEEK_END: | |
102 | seek_position = RETRO_VFS_SEEK_POSITION_END; | |
103 | break; | |
104 | } | |
105 | ||
106 | return filestream_seek(stream, offset, seek_position); | |
107 | } | |
108 | ||
109 | int64_t rfread(void* buffer, | |
110 | size_t elem_size, size_t elem_count, RFILE* stream) | |
111 | { | |
112 | if (!stream || (elem_size == 0) || (elem_count == 0)) | |
113 | return 0; | |
114 | ||
115 | return (filestream_read(stream, buffer, elem_size * elem_count) / elem_size); | |
116 | } | |
117 | ||
118 | char *rfgets(char *buffer, int maxCount, RFILE* stream) | |
119 | { | |
120 | if (!stream) | |
121 | return NULL; | |
122 | ||
123 | return filestream_gets(stream, buffer, maxCount); | |
124 | } | |
125 | ||
126 | int rfgetc(RFILE* stream) | |
127 | { | |
128 | if (!stream) | |
129 | return EOF; | |
130 | ||
131 | return filestream_getc(stream); | |
132 | } | |
133 | ||
134 | int64_t rfwrite(void const* buffer, | |
135 | size_t elem_size, size_t elem_count, RFILE* stream) | |
136 | { | |
137 | if (!stream || (elem_size == 0) || (elem_count == 0)) | |
138 | return 0; | |
139 | ||
140 | return (filestream_write(stream, buffer, elem_size * elem_count) / elem_size); | |
141 | } | |
142 | ||
143 | int rfputc(int character, RFILE * stream) | |
144 | { | |
145 | if (!stream) | |
146 | return EOF; | |
147 | ||
148 | return filestream_putc(stream, character); | |
149 | } | |
150 | ||
151 | int64_t rfflush(RFILE * stream) | |
152 | { | |
153 | if (!stream) | |
154 | return EOF; | |
155 | ||
156 | return filestream_flush(stream); | |
157 | } | |
158 | ||
159 | int rfprintf(RFILE * stream, const char * format, ...) | |
160 | { | |
161 | int result; | |
162 | va_list vl; | |
163 | ||
164 | if (!stream) | |
165 | return -1; | |
166 | ||
167 | va_start(vl, format); | |
168 | result = filestream_vprintf(stream, format, vl); | |
169 | va_end(vl); | |
170 | return result; | |
171 | } | |
172 | ||
173 | int rferror(RFILE* stream) | |
174 | { | |
175 | return filestream_error(stream); | |
176 | } | |
177 | ||
178 | int rfeof(RFILE* stream) | |
179 | { | |
180 | return filestream_eof(stream); | |
181 | } | |
182 | ||
183 | int rfscanf(RFILE * stream, const char * format, ...) | |
184 | { | |
185 | int result; | |
186 | va_list vl; | |
187 | ||
188 | if (!stream) | |
189 | return 0; | |
190 | ||
191 | va_start(vl, format); | |
192 | result = filestream_vscanf(stream, format, &vl); | |
193 | va_end(vl); | |
194 | return result; | |
195 | } |