__private_extern__ int
__collate_range_cmp(wchar_t c1, wchar_t c2, locale_t loc)
{
static wchar_t s1[2], s2[2];
s1[0] = c1;
s2[0] = c2;
return (wcscoll_l(s1, s2, loc));
}
int _Locale_strwcmp(struct _Locale_collate *__loc,
const wchar_t *s1, size_t n1,
const wchar_t *s2, size_t n2) {
int ret;
wchar_t buf1[64], buf2[64];
while (n1 > 0 && n2 > 0) {
size_t bufsize1 = n1 < 63 ? n1 : 63;
size_t bufsize2 = n2 < 63 ? n2 : 63;
wcsncpy(buf1, s1, bufsize1); buf1[bufsize1] = 0;
wcsncpy(buf2, s2, bufsize2); buf2[bufsize2] = 0;
ret = wcscoll_l(buf1, buf2, (__c_locale)__loc);
if (ret != 0) return ret;
s1 += bufsize1; n1 -= bufsize1;
s2 += bufsize2; n2 -= bufsize2;
}
return ret;
}
int
strcoll_l(const char *s, const char *s2, locale_t loc)
{
int ret;
const wchar_t *t = NULL, *t2 = NULL;
int sverrno;
NORMALIZE_LOCALE(loc);
if (loc->__collate_load_error || (t = __collate_mbstowcs(s, loc)) == NULL || (t2 = __collate_mbstowcs(s2, loc)) == NULL) {
sverrno = errno;
free((void *)t);
free((void *)t2);
errno = sverrno;
return strcmp(s, s2);
}
ret = wcscoll_l(t, t2, loc);
sverrno = errno;
free((void *)t);
free((void *)t2);
errno = sverrno;
return ret;
}
int
wcscoll(const wchar_t *ws1, const wchar_t *ws2)
{
return wcscoll_l(ws1, ws2, __get_locale());
}
static size_t coll(wchar_t const *left,wchar_t const *right,locale_t l)
{
return wcscoll_l(left,right,l);
}
/*
* In order to properly handle multibyte locales, its easiest to just
* convert to wide characters and then use wcscoll. However if an
* error occurs, we gracefully fall back to simple strcmp. Caller
* should check errno.
*/
int
strcoll_l(const char *s, const char *s2, locale_t locale)
{
int ret;
wchar_t *t1 = NULL, *t2 = NULL;
wchar_t *w1 = NULL, *w2 = NULL;
const char *cs1, *cs2;
mbstate_t mbs1;
mbstate_t mbs2;
size_t sz1, sz2;
memset(&mbs1, 0, sizeof (mbstate_t));
memset(&mbs2, 0, sizeof (mbstate_t));
/*
* The mbsrtowcs_l function can set the src pointer to null upon
* failure, so it should act on a copy to avoid:
* - sending null pointer to strcmp
* - having strcoll/strcoll_l change *s or *s2 to null
*/
cs1 = s;
cs2 = s2;
FIX_LOCALE(locale);
struct xlocale_collate *table =
(struct xlocale_collate*)locale->components[XLC_COLLATE];
if (table->__collate_load_error)
goto error;
sz1 = strlen(s) + 1;
sz2 = strlen(s2) + 1;
/*
* Simple assumption: conversion to wide format is strictly
* reducing, i.e. a single byte (or multibyte character)
* cannot result in multiple wide characters.
*/
if ((t1 = malloc(sz1 * sizeof (wchar_t))) == NULL)
goto error;
w1 = t1;
if ((t2 = malloc(sz2 * sizeof (wchar_t))) == NULL)
goto error;
w2 = t2;
if ((mbsrtowcs_l(w1, &cs1, sz1, &mbs1, locale)) == (size_t)-1)
goto error;
if ((mbsrtowcs_l(w2, &cs2, sz2, &mbs2, locale)) == (size_t)-1)
goto error;
ret = wcscoll_l(w1, w2, locale);
free(t1);
free(t2);
return (ret);
error:
free(t1);
free(t2);
return (strcmp(s, s2));
}
/*
* In order to properly handle multibyte locales, its easiet to just
* convert to wide characters and then use wcscoll. However if an
* error occurs, we gracefully fall back to simple strcmp. Caller
* should check errno.
*/
int
strcoll_l(const char *s1, const char *s2, locale_t loc)
{
int ret;
wchar_t *t1 = NULL, *t2 = NULL;
wchar_t *w1 = NULL, *w2 = NULL;
size_t sz1, sz2;
const struct lc_collate *lcc = loc->collate;
if (lcc->lc_is_posix)
return (strcmp(s1, s2));
sz1 = strlen(s1) + 1;
sz2 = strlen(s2) + 1;
/*
* Simple assumption: conversion to wide format is strictly
* reducing, i.e. a single byte (or multibyte character)
* cannot result in multiple wide characters.
*
* We gain a bit of performance by giving preference to alloca
* for small string allocations.
*/
if (sz1 > ALLOCA_LIMIT) {
if ((t1 = malloc(sz1 * sizeof (wchar_t))) == NULL)
goto error;
w1 = t1;
} else {
if ((w1 = alloca(sz1 * sizeof (wchar_t))) == NULL)
goto error;
}
if (sz2 > ALLOCA_LIMIT) {
if ((t2 = malloc(sz2 * sizeof (wchar_t))) == NULL)
goto error;
w2 = t2;
} else {
if ((w2 = alloca(sz2 * sizeof (wchar_t))) == NULL)
goto error;
}
if ((mbstowcs_l(w1, s1, sz1, loc)) == (size_t)-1)
goto error;
if ((mbstowcs_l(w2, s2, sz2, loc)) == (size_t)-1)
goto error;
ret = wcscoll_l(w1, w2, loc);
if (t1)
free(t1);
if (t2)
free(t2);
return (ret);
error:
if (t1)
free(t1);
if (t2)
free(t2);
return (strcmp(s1, s2));
}
int
wcscoll(const wchar_t *s1, const wchar_t *s2)
{
return wcscoll_l(s1, s2, _current_locale());
}