aboutsummaryrefslogtreecommitdiffstats
path: root/erts/emulator/sys/common/erl_sys_common_misc.c
blob: dbb59676c8d70117dd65aef7f3aab8aadb6ff15e (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
/*
 * %CopyrightBegin%
 * 
 * Copyright Ericsson AB 2006-2010. All Rights Reserved.
 * 
 * The contents of this file are subject to the Erlang Public License,
 * Version 1.1, (the "License"); you may not use this file except in
 * compliance with the License. You should have received a copy of the
 * Erlang Public License along with this software. If not, it can be
 * retrieved online at http://www.erlang.org/.
 * 
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and limitations
 * under the License.
 * 
 * %CopyrightEnd%
 */

/*
 * Description:	Check I/O
 *
 * Author: 	Rickard Green
 */

#ifdef HAVE_CONFIG_H
#  include "config.h"
#endif

#include "sys.h"
#include "global.h"

#if !defined(__WIN32__)
#include <locale.h>
#if !defined(HAVE_SETLOCALE) || !defined(HAVE_NL_LANGINFO) || !defined(HAVE_LANGINFO_H)
#define PRIMITIVE_UTF8_CHECK 1
#else
#include <langinfo.h>
#endif
#endif

/* Written once and only once */

static int filename_encoding = ERL_FILENAME_UNKNOWN;

void erts_init_sys_common_misc(void)
{
#if defined(__WIN32__)
    filename_encoding = ERL_FILENAME_WIN_WCHAR;
#else
    char *l;
    filename_encoding = ERL_FILENAME_LATIN1;
#  ifdef PRIMITIVE_UTF8_CHECK
    setlocale(LC_CTYPE, "");  /* Set international environment, 
				 ignore result */
    if (((l = getenv("LC_ALL"))   && *l) ||
	((l = getenv("LC_CTYPE")) && *l) ||
	((l = getenv("LANG"))     && *l)) {
	if (strstr(l, "UTF-8")) {
	    filename_encoding = ERL_FILENAME_UTF8;
	} 
    }
    
#  else
    l = setlocale(LC_CTYPE, "");  /* Set international environment */
    if (l != NULL) {
	if (strcmp(nl_langinfo(CODESET), "UTF-8") == 0) {
	    filename_encoding = ERL_FILENAME_UTF8;
	}
    }
#  endif
#endif
}

int erts_get_native_filename_encoding(void)
{
    return filename_encoding;
}