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#include <locale.h>
#include <string.h>
#include "locale_impl.h"
#include "libc.h"
#include "atomic.h"
const char *__lctrans_impl(const char *msg, const struct __locale_map *lm)
{
const char *trans = 0;
if (lm) trans = __mo_lookup(lm->map, lm->map_size, msg);
return trans ? trans : msg;
}
const unsigned char *__map_file(const char *, size_t *);
int __munmap(void *, size_t);
char *__strchrnul(const char *, int);
static struct __locale_map *findlocale(const char *name, size_t n)
{
static void *loc_head;
struct __locale_map *p, *new, *old_head;
const char *path = 0, *z;
char buf[256];
size_t l;
const void *map;
size_t map_size;
for (p=loc_head; p; p=p->next)
if (!strcmp(name, p->name)) return p;
if (!libc.secure) path = getenv("MUSL_LOCPATH");
/* FIXME: add a default path? */
if (!path) return 0;
for (; *path; path=z+!!*z) {
z = __strchrnul(path, ':');
l = z - path - !!*z;
if (l >= sizeof buf - n - 2) continue;
memcpy(buf, path, l);
buf[l] = '/';
memcpy(buf+l+1, name, n);
buf[l+1+n] = 0;
map = __map_file(buf, &map_size);
if (map) {
new = malloc(sizeof *new);
if (!new) {
__munmap((void *)map, map_size);
return 0;
}
new->map = map;
new->map_size = map_size;
memcpy(new->name, name, n);
new->name[n] = 0;
do {
old_head = loc_head;
new->next = old_head;
} while (a_cas_p(&loc_head, old_head, new) != old_head);
return new;
}
}
return 0;
}
static const char envvars[][12] = {
"LC_CTYPE",
"LC_NUMERIC",
"LC_TIME",
"LC_COLLATE",
"LC_MONETARY",
"LC_MESSAGES",
};
int __setlocalecat(locale_t loc, int cat, const char *val)
{
if (!*val) {
(val = getenv("LC_ALL")) && *val ||
(val = getenv(envvars[cat])) && *val ||
(val = getenv("LANG")) && *val ||
(val = "C.UTF-8");
}
size_t n;
for (n=0; n<LOCALE_NAME_MAX && val[n] && val[n]!='/'; n++);
if (val[0]=='.' || val[n]) val = "C.UTF-8";
int builtin = (val[0]=='C' && !val[1])
|| !strcmp(val, "C.UTF-8")
|| !strcmp(val, "POSIX");
struct __locale_map *data, *old;
switch (cat) {
case LC_CTYPE:
a_store(&loc->ctype_utf8, !builtin || val[1]=='.');
break;
case LC_MESSAGES:
if (builtin) {
loc->messages_name[0] = 0;
} else {
memcpy(loc->messages_name, val, n);
loc->messages_name[n] = 0;
}
/* fall through */
default:
data = builtin ? 0 : findlocale(val, n);
if (data == loc->cat[cat-2]) break;
do old = loc->cat[cat-2];
while (a_cas_p(&loc->cat[cat-2], old, data) != old);
case LC_NUMERIC:
break;
}
return 0;
}
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