1 /* Test of determination whether a locale is different from the "C" locale.
2 Copyright (C) 2019-2023 Free Software Foundation, Inc.
3
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
8
9 This program 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
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <https://www.gnu.org/licenses/>. */
16
17 /* Written by Bruno Haible <bruno@clisp.org>, 2019. */
18
19 #include <config.h>
20
21 #include "hard-locale.h"
22
23 #include <locale.h>
24 #include <stdio.h>
25 #include <string.h>
26
27 /* True if all locale names are accepted and all locales are trivial.
28 This is the case e.g. on OpenBSD 3.8. */
29 static bool all_trivial;
30
31 static int
32 test_one (const char *name, int failure_bitmask)
33 {
34 if (setlocale (LC_ALL, name) != NULL)
35 {
36 bool expected;
37
38 /* musl libc has special code for the C.UTF-8 locale; other than that,
39 all locale names are accepted and all locales are trivial.
40 OpenBSD returns the locale name that was set, but we don't know how it
41 behaves under the hood. Likewise for Haiku.
42 On Android >= 5.0, the "C" locale may have UTF-8 encoding, and we don't
43 know how it will behave in the future. */
44 #if defined MUSL_LIBC || defined __OpenBSD__ || defined __HAIKU__ || defined __ANDROID__
45 expected = true;
46 #else
47 expected = !all_trivial;
48 #endif
49 if (hard_locale (LC_CTYPE) != expected)
50 {
51 if (expected)
52 fprintf (stderr, "Unexpected: The category LC_CTYPE of the locale '%s' is not equivalent to C or POSIX.\n",
53 name);
54 else
55 fprintf (stderr, "Unexpected: The category LC_CTYPE of the locale '%s' is equivalent to C or POSIX.\n",
56 name);
57 return failure_bitmask;
58 }
59
60 /* On NetBSD 7.0, some locales such as de_DE.ISO8859-1 and de_DE.UTF-8
61 have the LC_COLLATE category set to "C".
62 Similarly, on musl libc, with the C.UTF-8 locale.
63 On Android >= 5.0, the "C" locale may have UTF-8 encoding, and we don't
64 know how it will behave in the future. */
65 #if defined __NetBSD__
66 expected = false;
67 #elif defined MUSL_LIBC
68 expected = strcmp (name, "C.UTF-8") != 0;
69 #elif (defined __OpenBSD__ && HAVE_DUPLOCALE) || defined __HAIKU__ || defined __ANDROID__ /* OpenBSD >= 6.2, Haiku, Android */
70 expected = true;
71 #else
72 expected = !all_trivial;
73 #endif
74 if (hard_locale (LC_COLLATE) != expected)
75 {
76 if (expected)
77 fprintf (stderr, "Unexpected: The category LC_COLLATE of the locale '%s' is not equivalent to C or POSIX.\n",
78 name);
79 else
80 fprintf (stderr, "Unexpected: The category LC_COLLATE of the locale '%s' is equivalent to C or POSIX.\n",
81 name);
82 return failure_bitmask;
83 }
84 }
85 return 0;
86 }
87
88 int
89 main ()
90 {
91 int fail = 0;
92
93 /* The initial locale is the "C" or "POSIX" locale.
94 On Android >= 5.0, it is equivalent to the "C.UTF-8" locale, cf.
95 <https://lists.gnu.org/archive/html/bug-gnulib/2023-01/msg00141.html>. */
96 #if ! defined __ANDROID__
97 if (hard_locale (LC_CTYPE) || hard_locale (LC_COLLATE))
98 {
99 fprintf (stderr, "The initial locale should not be hard!\n");
100 fail |= 1;
101 }
102 #endif
103
104 all_trivial = (setlocale (LC_ALL, "foobar") != NULL);
105
106 fail |= test_one ("de", 2);
107 fail |= test_one ("de_DE", 4);
108 fail |= test_one ("de_DE.ISO8859-1", 8);
109 fail |= test_one ("de_DE.iso88591", 8);
110 fail |= test_one ("de_DE.UTF-8", 16);
111 fail |= test_one ("de_DE.utf8", 16);
112 fail |= test_one ("german", 32);
113 fail |= test_one ("C.UTF-8", 64);
114
115 return fail;
116 }