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_DOS
24
25#include <dir.h>
26#include <sys/stat.h>
27
28/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
29// System dependent filesystem routines
30
31#include "../SDL_sysfilesystem.h"
32
33char *SDL_SYS_GetBasePath(void)
34{
35    extern const char *SDL_argv0; // from src/main/dos/SDL_sysmain_runapp.c
36    char *searched = searchpath(SDL_argv0);
37    if (!searched) {
38        SDL_SetError("argv[0] not found by searchpath");
39        return NULL;
40    }
41
42    char *fullpath = SDL_strdup(searched);
43    if (!fullpath) {
44        return NULL;
45    }
46
47    // I don't know if this is a good idea. Drop DOS path separators, use Unix style instead.
48    char *ptr;
49    for (ptr = fullpath; *ptr; ptr++) {
50        if (*ptr == '\\') {
51            *ptr = '/';
52        }
53    }
54
55    // drop the .exe name.
56    ptr = SDL_strrchr(fullpath, '/');
57    if (ptr) {
58        ptr[1] = '\0';
59    }
60
61    return fullpath;
62}
63
64char *SDL_SYS_GetPrefPath(const char *org, const char *app)
65{
66    char *result = NULL;
67    size_t len;
68    if (!app) {
69        SDL_InvalidParamError("app");
70        return NULL;
71    }
72
73    const char *base = SDL_GetBasePath();
74    if (!base) {
75        return NULL;
76    }
77
78    if (!org) {
79        org = "";
80    }
81
82    len = SDL_strlen(base) + SDL_strlen(org) + SDL_strlen(app) + 4;
83    result = (char *)SDL_malloc(len);
84    if (result) {
85        if (*org) {
86            SDL_snprintf(result, len, "%s%s", base, org);
87            mkdir(result, 0755);
88            SDL_snprintf(result, len, "%s%s/%s/", base, org, app);
89        } else {
90            SDL_snprintf(result, len, "%s%s/", base, app);
91        }
92
93        mkdir(result, 0755);
94    }
95
96    return result;
97}
98
99char *SDL_SYS_GetUserFolder(SDL_Folder folder)
100{
101    SDL_Unsupported();
102    return NULL;
103}
104
105#endif // SDL_FILESYSTEM_DOS
106
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