114 lines
2.6 KiB
C
114 lines
2.6 KiB
C
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#include <locale.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <stdlib.h>
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#include "locale_impl.h"
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#include "libc.h"
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#include "lock.h"
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#include "fork_impl.h"
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#define malloc __libc_malloc
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#define calloc undef
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#define realloc undef
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#define free undef
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const char *__lctrans_impl(const char *msg, const struct __locale_map *lm)
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{
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const char *trans = 0;
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if (lm) trans = __mo_lookup(lm->map, lm->map_size, msg);
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return trans ? trans : msg;
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}
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static const char envvars[][12] = {
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"LC_CTYPE",
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"LC_NUMERIC",
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"LC_TIME",
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"LC_COLLATE",
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"LC_MONETARY",
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"LC_MESSAGES",
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};
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volatile int __locale_lock[1];
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volatile int *const __locale_lockptr = __locale_lock;
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const struct __locale_map *__get_locale(int cat, const char *val)
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{
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static void *volatile loc_head;
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const struct __locale_map *p;
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struct __locale_map *new = 0;
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const char *path = 0, *z;
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char buf[256];
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size_t l, n;
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if (!*val) {
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(val = getenv("LC_ALL")) && *val ||
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(val = getenv(envvars[cat])) && *val ||
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(val = getenv("LANG")) && *val ||
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(val = "C.UTF-8");
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}
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/* Limit name length and forbid leading dot or any slashes. */
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for (n=0; n<LOCALE_NAME_MAX && val[n] && val[n]!='/'; n++);
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if (val[0]=='.' || val[n]) val = "C.UTF-8";
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int builtin = (val[0]=='C' && !val[1])
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|| !strcmp(val, "C.UTF-8")
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|| !strcmp(val, "POSIX");
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if (builtin) {
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if (cat == LC_CTYPE && val[1]=='.')
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return (void *)&__c_dot_utf8;
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return 0;
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}
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for (p=loc_head; p; p=p->next)
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if (!strcmp(val, p->name)) return p;
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if (!libc.secure) path = getenv("MUSL_LOCPATH");
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/* FIXME: add a default path? */
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if (path) for (; *path; path=z+!!*z) {
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z = __strchrnul(path, ':');
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l = z - path;
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if (l >= sizeof buf - n - 2) continue;
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memcpy(buf, path, l);
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buf[l] = '/';
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memcpy(buf+l+1, val, n);
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buf[l+1+n] = 0;
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size_t map_size;
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const void *map = __map_file(buf, &map_size);
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if (map) {
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new = malloc(sizeof *new);
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if (!new) {
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__munmap((void *)map, map_size);
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break;
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}
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new->map = map;
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new->map_size = map_size;
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memcpy(new->name, val, n);
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new->name[n] = 0;
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new->next = loc_head;
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loc_head = new;
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break;
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}
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}
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/* If no locale definition was found, make a locale map
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* object anyway to store the name, which is kept for the
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* sake of being able to do message translations at the
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* application level. */
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if (!new && (new = malloc(sizeof *new))) {
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new->map = __c_dot_utf8.map;
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new->map_size = __c_dot_utf8.map_size;
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memcpy(new->name, val, n);
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new->name[n] = 0;
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new->next = loc_head;
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loc_head = new;
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}
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/* For LC_CTYPE, never return a null pointer unless the
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* requested name was "C" or "POSIX". */
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if (!new && cat == LC_CTYPE) new = (void *)&__c_dot_utf8;
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return new;
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}
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