1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2014 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
35 #include "dirent-util.h"
38 #include "locale-util.h"
39 #include "path-util.h"
41 #include "string-table.h"
42 #include "string-util.h"
46 static int add_locales_from_archive(Set
*locales
) {
47 /* Stolen from glibc... */
53 /* Name hash table. */
54 uint32_t namehash_offset
;
55 uint32_t namehash_used
;
56 uint32_t namehash_size
;
58 uint32_t string_offset
;
61 /* Table with locale records. */
62 uint32_t locrectab_offset
;
63 uint32_t locrectab_used
;
64 uint32_t locrectab_size
;
65 /* MD5 sum hash table. */
66 uint32_t sumhash_offset
;
67 uint32_t sumhash_used
;
68 uint32_t sumhash_size
;
72 /* Hash value of the name. */
74 /* Offset of the name in the string table. */
76 /* Offset of the locale record. */
77 uint32_t locrec_offset
;
80 const struct locarhead
*h
;
81 const struct namehashent
*e
;
82 const void *p
= MAP_FAILED
;
83 _cleanup_close_
int fd
= -1;
89 fd
= open("/usr/lib/locale/locale-archive", O_RDONLY
|O_NOCTTY
|O_CLOEXEC
);
91 return errno
== ENOENT
? 0 : -errno
;
93 if (fstat(fd
, &st
) < 0)
96 if (!S_ISREG(st
.st_mode
))
99 if (st
.st_size
< (off_t
) sizeof(struct locarhead
))
102 p
= mmap(NULL
, st
.st_size
, PROT_READ
, MAP_SHARED
, fd
, 0);
106 h
= (const struct locarhead
*) p
;
107 if (h
->magic
!= 0xde020109 ||
108 h
->namehash_offset
+ h
->namehash_size
> st
.st_size
||
109 h
->string_offset
+ h
->string_size
> st
.st_size
||
110 h
->locrectab_offset
+ h
->locrectab_size
> st
.st_size
||
111 h
->sumhash_offset
+ h
->sumhash_size
> st
.st_size
) {
116 e
= (const struct namehashent
*) ((const uint8_t*) p
+ h
->namehash_offset
);
117 for (i
= 0; i
< h
->namehash_size
; i
++) {
120 if (e
[i
].locrec_offset
== 0)
123 if (!utf8_is_valid((char*) p
+ e
[i
].name_offset
))
126 z
= strdup((char*) p
+ e
[i
].name_offset
);
132 r
= set_consume(locales
, z
);
141 munmap((void*) p
, sz
);
146 static int add_locales_from_libdir (Set
*locales
) {
147 _cleanup_closedir_
DIR *dir
= NULL
;
148 struct dirent
*entry
;
151 dir
= opendir("/usr/lib/locale");
153 return errno
== ENOENT
? 0 : -errno
;
155 FOREACH_DIRENT(entry
, dir
, return -errno
) {
158 if (entry
->d_type
!= DT_DIR
)
161 z
= strdup(entry
->d_name
);
165 r
= set_consume(locales
, z
);
166 if (r
< 0 && r
!= -EEXIST
)
173 int get_locales(char ***ret
) {
174 _cleanup_set_free_ Set
*locales
= NULL
;
175 _cleanup_strv_free_
char **l
= NULL
;
178 locales
= set_new(&string_hash_ops
);
182 r
= add_locales_from_archive(locales
);
183 if (r
< 0 && r
!= -ENOENT
)
186 r
= add_locales_from_libdir(locales
);
190 l
= set_get_strv(locales
);
202 bool locale_is_valid(const char *name
) {
207 if (strlen(name
) >= 128)
210 if (!utf8_is_valid(name
))
213 if (!filename_is_valid(name
))
216 if (!string_is_safe(name
))
222 void init_gettext(void) {
223 setlocale(LC_ALL
, "");
224 textdomain(GETTEXT_PACKAGE
);
227 bool is_locale_utf8(void) {
229 static int cached_answer
= -1;
231 /* Note that we default to 'true' here, since today UTF8 is
232 * pretty much supported everywhere. */
234 if (cached_answer
>= 0)
237 if (!setlocale(LC_ALL
, "")) {
238 cached_answer
= true;
242 set
= nl_langinfo(CODESET
);
244 cached_answer
= true;
248 if (streq(set
, "UTF-8")) {
249 cached_answer
= true;
253 /* For LC_CTYPE=="C" return true, because CTYPE is effectly
254 * unset and everything can do to UTF-8 nowadays. */
255 set
= setlocale(LC_CTYPE
, NULL
);
257 cached_answer
= true;
261 /* Check result, but ignore the result if C was set
264 STR_IN_SET(set
, "C", "POSIX") &&
266 !getenv("LC_CTYPE") &&
270 return (bool) cached_answer
;
274 const char *draw_special_char(DrawSpecialChar ch
) {
276 static const char *draw_table
[2][_DRAW_SPECIAL_CHAR_MAX
] = {
279 [DRAW_TREE_VERTICAL
] = "\342\224\202 ", /* │ */
280 [DRAW_TREE_BRANCH
] = "\342\224\234\342\224\200", /* ├─ */
281 [DRAW_TREE_RIGHT
] = "\342\224\224\342\224\200", /* └─ */
282 [DRAW_TREE_SPACE
] = " ", /* */
283 [DRAW_TRIANGULAR_BULLET
] = "\342\200\243", /* ‣ */
284 [DRAW_BLACK_CIRCLE
] = "\342\227\217", /* ● */
285 [DRAW_ARROW
] = "\342\206\222", /* → */
286 [DRAW_DASH
] = "\342\200\223", /* – */
289 /* ASCII fallback */ {
290 [DRAW_TREE_VERTICAL
] = "| ",
291 [DRAW_TREE_BRANCH
] = "|-",
292 [DRAW_TREE_RIGHT
] = "`-",
293 [DRAW_TREE_SPACE
] = " ",
294 [DRAW_TRIANGULAR_BULLET
] = ">",
295 [DRAW_BLACK_CIRCLE
] = "*",
301 return draw_table
[!is_locale_utf8()][ch
];
304 static const char * const locale_variable_table
[_VARIABLE_LC_MAX
] = {
305 [VARIABLE_LANG
] = "LANG",
306 [VARIABLE_LANGUAGE
] = "LANGUAGE",
307 [VARIABLE_LC_CTYPE
] = "LC_CTYPE",
308 [VARIABLE_LC_NUMERIC
] = "LC_NUMERIC",
309 [VARIABLE_LC_TIME
] = "LC_TIME",
310 [VARIABLE_LC_COLLATE
] = "LC_COLLATE",
311 [VARIABLE_LC_MONETARY
] = "LC_MONETARY",
312 [VARIABLE_LC_MESSAGES
] = "LC_MESSAGES",
313 [VARIABLE_LC_PAPER
] = "LC_PAPER",
314 [VARIABLE_LC_NAME
] = "LC_NAME",
315 [VARIABLE_LC_ADDRESS
] = "LC_ADDRESS",
316 [VARIABLE_LC_TELEPHONE
] = "LC_TELEPHONE",
317 [VARIABLE_LC_MEASUREMENT
] = "LC_MEASUREMENT",
318 [VARIABLE_LC_IDENTIFICATION
] = "LC_IDENTIFICATION"
321 DEFINE_STRING_TABLE_LOOKUP(locale_variable
, LocaleVariable
);