Atlas - SDL_sysfilesystem.c
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[FILE BEGIN]
1/*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2026 Sam Lantinga <[email protected]>
4
5  This software is provided 'as-is', without any express or implied
6  warranty.  In no event will the authors be held liable for any damages
7  arising from the use of this software.
8
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12
13  1. The origin of this software must not be misrepresented; you must not
14     claim that you wrote the original software. If you use this software
15     in a product, an acknowledgment in the product documentation would be
16     appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18     misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20*/
21#include "SDL_internal.h"
22
23#ifdef SDL_FILESYSTEM_EMSCRIPTEN
24
25/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
26// System dependent filesystem routines
27
28#include "../SDL_sysfilesystem.h"
29
30#include <errno.h>
31#include <sys/stat.h>
32
33#include <emscripten/emscripten.h>
34
35char *SDL_SYS_GetBasePath(void)
36{
37    return SDL_strdup("/");
38}
39
40char *SDL_SYS_GetPrefPath(const char *org, const char *app)
41{
42    #ifdef SDL_EMSCRIPTEN_PERSISTENT_PATH_STRING
43    const char *append = SDL_EMSCRIPTEN_PERSISTENT_PATH_STRING;
44    #else
45    const char *append = "/libsdl";
46    #endif
47    char *result;
48    char *ptr = NULL;
49    const size_t len = SDL_strlen(append) + SDL_strlen(org) + SDL_strlen(app) + 4;
50    result = (char *)SDL_malloc(len);
51    if (!result) {
52        return NULL;
53    }
54
55    if (*org) {
56        SDL_snprintf(result, len, "%s/%s/%s/", append, org, app);
57    } else {
58        SDL_snprintf(result, len, "%s/%s/", append, app);
59    }
60
61    for (ptr = result + 1; *ptr; ptr++) {
62        if (*ptr == '/') {
63            *ptr = '\0';
64            if (mkdir(result, 0700) != 0 && errno != EEXIST) {
65                goto error;
66            }
67            *ptr = '/';
68        }
69    }
70
71    if (mkdir(result, 0700) != 0 && errno != EEXIST) {
72    error:
73        SDL_SetError("Couldn't create directory '%s': '%s'", result, strerror(errno));
74        SDL_free(result);
75        return NULL;
76    }
77
78    return result;
79}
80
81char *SDL_SYS_GetUserFolder(SDL_Folder folder)
82{
83    const char *home = NULL;
84
85    if (folder != SDL_FOLDER_HOME) {
86        SDL_SetError("Emscripten only supports the home folder");
87        return NULL;
88    }
89
90    home = SDL_getenv("HOME");
91    if (!home) {
92        SDL_SetError("No $HOME environment variable available");
93        return NULL;
94    }
95
96    char *result = SDL_malloc(SDL_strlen(home) + 2);
97    if (!result) {
98        return NULL;
99    }
100
101    if (SDL_snprintf(result, SDL_strlen(home) + 2, "%s/", home) < 0) {
102        SDL_SetError("Couldn't snprintf home path for Emscripten: %s", home);
103        SDL_free(result);
104        return NULL;
105    }
106
107    return result;
108}
109
110#endif // SDL_FILESYSTEM_EMSCRIPTEN
111
[FILE END]
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