2 This file is part of systemd.
4 Copyright 2014 Lennart Poettering
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
33 #include "dirent-util.h"
36 #include "locale-util.h"
37 #include "path-util.h"
39 #include "string-table.h"
40 #include "string-util.h"
44 static int add_locales_from_archive(Set *locales) {
45 /* Stolen from glibc... */
51 /* Name hash table. */
52 uint32_t namehash_offset;
53 uint32_t namehash_used;
54 uint32_t namehash_size;
56 uint32_t string_offset;
59 /* Table with locale records. */
60 uint32_t locrectab_offset;
61 uint32_t locrectab_used;
62 uint32_t locrectab_size;
63 /* MD5 sum hash table. */
64 uint32_t sumhash_offset;
65 uint32_t sumhash_used;
66 uint32_t sumhash_size;
70 /* Hash value of the name. */
72 /* Offset of the name in the string table. */
74 /* Offset of the locale record. */
75 uint32_t locrec_offset;
78 const struct locarhead *h;
79 const struct namehashent *e;
80 const void *p = MAP_FAILED;
81 _cleanup_close_ int fd = -1;
87 fd = open("/usr/lib/locale/locale-archive", O_RDONLY|O_NOCTTY|O_CLOEXEC);
89 return errno == ENOENT ? 0 : -errno;
91 if (fstat(fd, &st) < 0)
94 if (!S_ISREG(st.st_mode))
97 if (st.st_size < (off_t) sizeof(struct locarhead))
100 p = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
104 h = (const struct locarhead *) p;
105 if (h->magic != 0xde020109 ||
106 h->namehash_offset + h->namehash_size > st.st_size ||
107 h->string_offset + h->string_size > st.st_size ||
108 h->locrectab_offset + h->locrectab_size > st.st_size ||
109 h->sumhash_offset + h->sumhash_size > st.st_size) {
114 e = (const struct namehashent*) ((const uint8_t*) p + h->namehash_offset);
115 for (i = 0; i < h->namehash_size; i++) {
118 if (e[i].locrec_offset == 0)
121 if (!utf8_is_valid((char*) p + e[i].name_offset))
124 z = strdup((char*) p + e[i].name_offset);
130 r = set_consume(locales, z);
139 munmap((void*) p, sz);
144 static int add_locales_from_libdir (Set *locales) {
145 _cleanup_closedir_ DIR *dir = NULL;
146 struct dirent *entry;
149 dir = opendir("/usr/lib/locale");
151 return errno == ENOENT ? 0 : -errno;
153 FOREACH_DIRENT(entry, dir, return -errno) {
156 dirent_ensure_type(dir, entry);
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 *special_glyph(SpecialGlyph code) {
276 static const char* const draw_table[2][_SPECIAL_GLYPH_MAX] = {
279 [TREE_VERTICAL] = "| ",
280 [TREE_BRANCH] = "|-",
283 [TRIANGULAR_BULLET] = ">",
284 [BLACK_CIRCLE] = "*",
291 [TREE_VERTICAL] = "\342\224\202 ", /* │ */
292 [TREE_BRANCH] = "\342\224\234\342\224\200", /* ├─ */
293 [TREE_RIGHT] = "\342\224\224\342\224\200", /* └─ */
294 [TREE_SPACE] = " ", /* */
295 [TRIANGULAR_BULLET] = "\342\200\243", /* ‣ */
296 [BLACK_CIRCLE] = "\342\227\217", /* ● */
297 [ARROW] = "\342\206\222", /* → */
298 [MDASH] = "\342\200\223", /* – */
302 return draw_table[is_locale_utf8()][code];
305 static const char * const locale_variable_table[_VARIABLE_LC_MAX] = {
306 [VARIABLE_LANG] = "LANG",
307 [VARIABLE_LANGUAGE] = "LANGUAGE",
308 [VARIABLE_LC_CTYPE] = "LC_CTYPE",
309 [VARIABLE_LC_NUMERIC] = "LC_NUMERIC",
310 [VARIABLE_LC_TIME] = "LC_TIME",
311 [VARIABLE_LC_COLLATE] = "LC_COLLATE",
312 [VARIABLE_LC_MONETARY] = "LC_MONETARY",
313 [VARIABLE_LC_MESSAGES] = "LC_MESSAGES",
314 [VARIABLE_LC_PAPER] = "LC_PAPER",
315 [VARIABLE_LC_NAME] = "LC_NAME",
316 [VARIABLE_LC_ADDRESS] = "LC_ADDRESS",
317 [VARIABLE_LC_TELEPHONE] = "LC_TELEPHONE",
318 [VARIABLE_LC_MEASUREMENT] = "LC_MEASUREMENT",
319 [VARIABLE_LC_IDENTIFICATION] = "LC_IDENTIFICATION"
322 DEFINE_STRING_TABLE_LOOKUP(locale_variable, LocaleVariable);