1/*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19#ifndef AVUTIL_GETENV_UTF8_H
20#define AVUTIL_GETENV_UTF8_H
21
22#include <stdlib.h>
23
24#include "config.h"
25#include "mem.h"
26
27#if HAVE_GETENV && defined(_WIN32)
28
29#include "libavutil/wchar_filename.h"
30
31static inline char *getenv_utf8(const char *varname)
32{
33    wchar_t *varname_w, *var_w;
34    char *var;
35
36    if (utf8towchar(varname, &varname_w))
37        return NULL;
38    if (!varname_w)
39        return NULL;
40
41    var_w = _wgetenv(varname_w);
42    av_free(varname_w);
43
44    if (!var_w)
45        return NULL;
46    if (wchartoutf8(var_w, &var))
47        return NULL;
48
49    return var;
50
51    // No CP_ACP fallback compared to other *_utf8() functions:
52    // non UTF-8 strings must not be returned.
53}
54
55static inline void freeenv_utf8(char *var)
56{
57    av_free(var);
58}
59
60static inline char *getenv_dup(const char *varname)
61{
62    return getenv_utf8(varname);
63}
64
65#else
66
67static inline char *getenv_utf8(const char *varname)
68{
69    return getenv(varname);
70}
71
72static inline void freeenv_utf8(char *var)
73{
74}
75
76static inline char *getenv_dup(const char *varname)
77{
78    char *var = getenv(varname);
79    if (!var)
80        return NULL;
81    return av_strdup(var);
82}
83
84#endif // HAVE_GETENV && defined(_WIN32)
85
86#endif // AVUTIL_GETENV_UTF8_H
87