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#include <locale.h>
#include <stdlib.h>
#include <string.h>
#include "locale_impl.h"
#include "libc.h"
#include "atomic.h"
static char buf[2+4*(LOCALE_NAME_MAX+1)];
char *setlocale(int cat, const char *name)
{
struct __locale_map *lm;
int i, j;
if (!libc.global_locale.messages_name) {
libc.global_locale.messages_name =
buf + 2 + 3*(LOCALE_NAME_MAX+1);
}
if ((unsigned)cat > LC_ALL) return 0;
/* For LC_ALL, setlocale is required to return a string which
* encodes the current setting for all categories. The format of
* this string is unspecified, and only the following code, which
* performs both the serialization and deserialization, depends
* on the format, so it can easily be changed if needed. */
if (cat == LC_ALL) {
if (name) {
char part[LOCALE_NAME_MAX+1];
if (name[0] && name[1]==';'
&& strlen(name) > 2 + 3*(LOCALE_NAME_MAX+1)) {
part[0] = name[0];
part[1] = 0;
setlocale(LC_CTYPE, part);
part[LOCALE_NAME_MAX] = 0;
for (i=LC_TIME; i<LC_MESSAGES; i++) {
memcpy(part, name + 2 + (i-2)*(LOCALE_NAME_MAX+1), LOCALE_NAME_MAX);
for (j=LOCALE_NAME_MAX-1; j && part[j]==';'; j--)
part[j] = 0;
setlocale(i, part);
}
setlocale(LC_MESSAGES, name + 2 + 3*(LOCALE_NAME_MAX+1));
} else {
for (i=0; i<LC_ALL; i++)
setlocale(i, name);
}
}
memset(buf, ';', 2 + 3*(LOCALE_NAME_MAX+1));
buf[0] = libc.global_locale.ctype_utf8 ? 'U' : 'C';
for (i=LC_TIME; i<LC_MESSAGES; i++) {
lm = libc.global_locale.cat[i-2];
if (lm) memcpy(buf + 2 + (i-2)*(LOCALE_NAME_MAX+1),
lm->name, strlen(lm->name));
}
return buf;
}
if (name) {
int adj = libc.global_locale.ctype_utf8;
__setlocalecat(&libc.global_locale, cat, name);
adj -= libc.global_locale.ctype_utf8;
if (adj) a_fetch_add(&libc.bytelocale_cnt_minus_1, adj);
}
switch (cat) {
case LC_CTYPE:
return libc.global_locale.ctype_utf8 ? "C.UTF-8" : "C";
case LC_NUMERIC:
return "C";
case LC_MESSAGES:
return libc.global_locale.messages_name[0]
? libc.global_locale.messages_name : "C";
default:
lm = libc.global_locale.cat[cat-2];
return lm ? lm->name : "C";
}
}
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