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#include <libintl.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <limits.h>
#include <sys/stat.h>
#include "locale_impl.h"
#include "libc.h"
#include "atomic.h"
struct binding {
struct binding *next;
int dirlen;
int active;
char *domainname;
char *dirname;
char buf[];
};
static void *volatile bindings;
static char *gettextdir(const char *domainname, size_t *dirlen)
{
struct binding *p;
for (p=bindings; p; p=p->next) {
if (!strcmp(p->domainname, domainname) && p->active) {
*dirlen = p->dirlen;
return (char *)p->dirname;
}
}
return 0;
}
char *bindtextdomain(const char *domainname, const char *dirname)
{
static int lock[2];
struct binding *p, *q;
if (!domainname) return 0;
if (!dirname) return gettextdir(domainname, &(size_t){0});
size_t domlen = strlen(domainname);
size_t dirlen = strlen(dirname);
if (domlen > NAME_MAX || dirlen >= PATH_MAX) {
errno = EINVAL;
return 0;
}
LOCK(lock);
for (p=bindings; p; p=p->next) {
if (!strcmp(p->domainname, domainname) &&
!strcmp(p->dirname, dirname)) {
break;
}
}
if (!p) {
p = malloc(sizeof *p + domlen + dirlen + 2);
if (!p) {
UNLOCK(lock);
return 0;
}
p->next = bindings;
p->dirlen = dirlen;
p->domainname = p->buf;
p->dirname = p->buf + domlen + 1;
memcpy(p->domainname, domainname, domlen+1);
memcpy(p->dirname, dirname, dirlen+1);
a_cas_p(&bindings, bindings, p);
}
a_store(&p->active, 1);
for (q=bindings; q; q=q->next) {
if (!strcmp(p->domainname, domainname) && q != p)
a_store(&q->active, 0);
}
UNLOCK(lock);
return (char *)p->dirname;
}
static const char catnames[][12] = {
"LC_TIME",
"LC_COLLATE",
"LC_MONETARY",
"LC_MESSAGES",
};
static const char catlens[] = { 7, 10, 11, 11 };
struct msgcat {
struct msgcat *next;
const void *map;
size_t map_size;
char name[];
};
static char *dummy_gettextdomain()
{
return "messages";
}
weak_alias(dummy_gettextdomain, __gettextdomain);
const unsigned char *__map_file(const char *, size_t *);
int __munmap(void *, size_t);
char *dcngettext(const char *domainname, const char *msgid1, const char *msgid2, unsigned long int n, int category)
{
static struct msgcat *volatile cats;
struct msgcat *p;
struct __locale_struct *loc = CURRENT_LOCALE;
struct __locale_map *lm;
const char *dirname, *locname, *catname;
size_t dirlen, loclen, catlen, domlen;
if (!domainname) domainname = __gettextdomain();
domlen = strlen(domainname);
if (domlen > NAME_MAX) goto notrans;
dirname = gettextdir(domainname, &dirlen);
if (!dirname) goto notrans;
switch (category) {
case LC_MESSAGES:
locname = loc->messages_name;
if (!*locname) goto notrans;
break;
case LC_TIME:
case LC_MONETARY:
case LC_COLLATE:
lm = loc->cat[category-2];
if (!lm) goto notrans;
locname = lm->name;
break;
default:
notrans:
return (char *) ((n == 1) ? msgid1 : msgid2);
}
catname = catnames[category-2];
catlen = catlens[category-2];
loclen = strlen(locname);
size_t namelen = dirlen+1 + loclen+1 + catlen+1 + domlen+3;
char name[namelen+1], *s = name;
memcpy(s, dirname, dirlen);
s[dirlen] = '/';
s += dirlen + 1;
memcpy(s, locname, loclen);
s[loclen] = '/';
s += loclen + 1;
memcpy(s, catname, catlen);
s[catlen] = '/';
s += catlen + 1;
memcpy(s, domainname, domlen);
s[domlen] = '.';
s[domlen+1] = 'm';
s[domlen+2] = 'o';
s[domlen+3] = 0;
for (p=cats; p; p=p->next)
if (!strcmp(p->name, name))
break;
if (!p) {
void *old_cats;
size_t map_size;
const void *map = __map_file(name, &map_size);
if (!map) goto notrans;
p = malloc(sizeof *p + namelen + 1);
if (!p) {
__munmap((void *)map, map_size);
goto notrans;
}
p->map = map;
p->map_size = map_size;
memcpy(p->name, name, namelen+1);
do {
old_cats = cats;
p->next = old_cats;
} while (a_cas_p(&cats, old_cats, p) != old_cats);
}
const char *trans = __mo_lookup(p->map, p->map_size, msgid1);
if (!trans) goto notrans;
/* FIXME: support alternate plural rules */
if (n != 1) {
size_t l = strlen(trans);
if (l+1 >= p->map_size - (trans - (char *)p->map))
goto notrans;
trans += l+1;
}
return (char *)trans;
}
char *dcgettext(const char *domainname, const char *msgid, int category)
{
return dcngettext(domainname, msgid, msgid, 1, category);
}
char *dngettext(const char *domainname, const char *msgid1, const char *msgid2, unsigned long int n)
{
return dcngettext(domainname, msgid1, msgid2, n, LC_MESSAGES);
}
char *dgettext(const char *domainname, const char *msgid)
{
return dcngettext(domainname, msgid, msgid, 1, LC_MESSAGES);
}
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