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3719602c PC |
1 | /* Copyright (C) 2010-2020 The RetroArch team |
2 | * | |
3 | * --------------------------------------------------------------------------------------- | |
4 | * The following license statement only applies to this file (file_path_io.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 <stdio.h> | |
24 | #include <stdlib.h> | |
25 | #include <string.h> | |
26 | #include <time.h> | |
27 | ||
28 | #include <sys/stat.h> | |
29 | ||
30 | #include <boolean.h> | |
31 | #include <file/file_path.h> | |
32 | #include <compat/strl.h> | |
33 | #include <compat/posix_string.h> | |
34 | #include <retro_miscellaneous.h> | |
35 | #include <string/stdstring.h> | |
36 | #define VFS_FRONTEND | |
37 | #include <vfs/vfs_implementation.h> | |
38 | ||
39 | #ifdef _WIN32 | |
40 | #include <direct.h> | |
41 | #else | |
42 | #include <unistd.h> /* stat() is defined here */ | |
43 | #endif | |
44 | ||
45 | /* TODO/FIXME - globals */ | |
46 | static retro_vfs_stat_t path_stat_cb = retro_vfs_stat_impl; | |
47 | static retro_vfs_mkdir_t path_mkdir_cb = retro_vfs_mkdir_impl; | |
48 | ||
49 | void path_vfs_init(const struct retro_vfs_interface_info* vfs_info) | |
50 | { | |
51 | const struct retro_vfs_interface* | |
52 | vfs_iface = vfs_info->iface; | |
53 | ||
54 | path_stat_cb = retro_vfs_stat_impl; | |
55 | path_mkdir_cb = retro_vfs_mkdir_impl; | |
56 | ||
57 | if (vfs_info->required_interface_version < PATH_REQUIRED_VFS_VERSION || !vfs_iface) | |
58 | return; | |
59 | ||
60 | path_stat_cb = vfs_iface->stat; | |
61 | path_mkdir_cb = vfs_iface->mkdir; | |
62 | } | |
63 | ||
64 | int path_stat(const char *path) | |
65 | { | |
66 | return path_stat_cb(path, NULL); | |
67 | } | |
68 | ||
69 | /** | |
70 | * path_is_directory: | |
71 | * @path : path | |
72 | * | |
73 | * Checks if path is a directory. | |
74 | * | |
75 | * @return true if path is a directory, otherwise false. | |
76 | */ | |
77 | bool path_is_directory(const char *path) | |
78 | { | |
79 | return (path_stat_cb(path, NULL) & RETRO_VFS_STAT_IS_DIRECTORY) != 0; | |
80 | } | |
81 | ||
82 | bool path_is_character_special(const char *path) | |
83 | { | |
84 | return (path_stat_cb(path, NULL) & RETRO_VFS_STAT_IS_CHARACTER_SPECIAL) != 0; | |
85 | } | |
86 | ||
87 | bool path_is_valid(const char *path) | |
88 | { | |
89 | return (path_stat_cb(path, NULL) & RETRO_VFS_STAT_IS_VALID) != 0; | |
90 | } | |
91 | ||
92 | int32_t path_get_size(const char *path) | |
93 | { | |
94 | int32_t filesize = 0; | |
95 | if (path_stat_cb(path, &filesize) != 0) | |
96 | return filesize; | |
97 | ||
98 | return -1; | |
99 | } | |
100 | ||
101 | /** | |
102 | * path_mkdir: | |
103 | * @dir : directory | |
104 | * | |
105 | * Create directory on filesystem. | |
106 | * | |
107 | * Recursive function. | |
108 | * | |
109 | * @return true if directory could be created, otherwise false. | |
110 | **/ | |
111 | bool path_mkdir(const char *dir) | |
112 | { | |
113 | bool norecurse = false; | |
114 | char *basedir = NULL; | |
115 | ||
116 | if (!(dir && *dir)) | |
117 | return false; | |
118 | ||
119 | /* Use heap. Real chance of stack | |
120 | * overflow if we recurse too hard. */ | |
121 | if (!(basedir = strdup(dir))) | |
122 | return false; | |
123 | ||
124 | path_parent_dir(basedir, strlen(basedir)); | |
125 | ||
126 | if (!*basedir || !strcmp(basedir, dir)) | |
127 | { | |
128 | free(basedir); | |
129 | return false; | |
130 | } | |
131 | ||
132 | if ( path_is_directory(basedir) | |
133 | || path_mkdir(basedir)) | |
134 | norecurse = true; | |
135 | ||
136 | free(basedir); | |
137 | ||
138 | if (norecurse) | |
139 | { | |
140 | int ret = path_mkdir_cb(dir); | |
141 | ||
142 | /* Don't treat this as an error. */ | |
143 | if (ret == -2 && path_is_directory(dir)) | |
144 | return true; | |
145 | else if (ret == 0) | |
146 | return true; | |
147 | } | |
148 | return false; | |
149 | } |