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/*-
* Copyright (c) 2013 Ed Schouten <ed@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/queue.h>
#include <assert.h>
#include <errno.h>
#include <langinfo.h>
#include <uchar.h>
#include "../iconv/citrus_hash.h"
#include "../iconv/citrus_module.h"
#include "../iconv/citrus_iconv.h"
#include "xlocale_private.h"
typedef struct {
bool initialized;
struct _citrus_iconv iconv;
union {
charXX_t widechar[SRCBUF_LEN];
char bytes[sizeof(charXX_t) * SRCBUF_LEN];
} srcbuf;
size_t srcbuf_len;
} _ConversionState;
_Static_assert(sizeof(_ConversionState) <= sizeof(mbstate_t),
"Size of _ConversionState must not exceed mbstate_t's size.");
size_t
cXXrtomb_l(char * __restrict s, charXX_t c, mbstate_t * __restrict ps,
locale_t locale)
{
_ConversionState *cs;
struct _citrus_iconv *handle;
char *src, *dst;
size_t srcleft, dstleft, invlen;
int err;
FIX_LOCALE(locale);
if (ps == NULL)
ps = &locale->cXXrtomb;
cs = (_ConversionState *)ps;
handle = &cs->iconv;
/* Reinitialize mbstate_t. */
if (s == NULL || !cs->initialized) {
if (_citrus_iconv_open(&handle, UTF_XX_INTERNAL,
nl_langinfo_l(CODESET, locale)) != 0) {
cs->initialized = false;
errno = EINVAL;
return (-1);
}
handle->cv_shared->ci_discard_ilseq = true;
handle->cv_shared->ci_hooks = NULL;
cs->srcbuf_len = 0;
cs->initialized = true;
if (s == NULL)
return (1);
}
assert(cs->srcbuf_len < sizeof(cs->srcbuf.widechar) / sizeof(charXX_t));
cs->srcbuf.widechar[cs->srcbuf_len++] = c;
/* Perform conversion. */
src = cs->srcbuf.bytes;
srcleft = cs->srcbuf_len * sizeof(charXX_t);
dst = s;
dstleft = MB_CUR_MAX_L(locale);
err = _citrus_iconv_convert(handle, &src, &srcleft, &dst, &dstleft,
0, &invlen);
/* Character is part of a surrogate pair. We need more input. */
if (err == EINVAL)
return (0);
cs->srcbuf_len = 0;
/* Illegal sequence. */
if (dst == s) {
errno = EILSEQ;
return ((size_t)-1);
}
return (dst - s);
}
size_t
cXXrtomb(char * __restrict s, charXX_t c, mbstate_t * __restrict ps)
{
return (cXXrtomb_l(s, c, ps, __get_locale()));
}
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