/* $NetBSD: citrus_none.c,v 1.18 2008/06/14 16:01:07 tnozaki Exp $ */
/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2002 Citrus Project,
* Copyright (c) 2010 Gabor Kovesdan <gabor@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>
#include <sys/types.h>
#include <assert.h>
#include <errno.h>
#include <iconv.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#include "citrus_namespace.h"
#include "citrus_types.h"
#include "citrus_module.h"
#include "citrus_none.h"
#include "citrus_stdenc.h"
_CITRUS_STDENC_DECLS(NONE);
_CITRUS_STDENC_DEF_OPS(NONE);
struct _citrus_stdenc_traits _citrus_NONE_stdenc_traits = {
0, /* et_state_size */
1, /* mb_cur_max */
};
static int
_citrus_NONE_stdenc_init(struct _citrus_stdenc * __restrict ce,
const void *var __unused, size_t lenvar __unused,
struct _citrus_stdenc_traits * __restrict et)
{
et->et_state_size = 0;
et->et_mb_cur_max = 1;
ce->ce_closure = NULL;
return (0);
}
static void
_citrus_NONE_stdenc_uninit(struct _citrus_stdenc *ce __unused)
{
}
static int
_citrus_NONE_stdenc_init_state(struct _citrus_stdenc * __restrict ce __unused,
void * __restrict ps __unused)
{
return (0);
}
static int
_citrus_NONE_stdenc_mbtocs(struct _citrus_stdenc * __restrict ce __unused,
_csid_t *csid, _index_t *idx, char **s, size_t n,
void *ps __unused, size_t *nresult, struct iconv_hooks *hooks)
{
if (n < 1) {
*nresult = (size_t)-2;
return (0);
}
*csid = 0;
*idx = (_index_t)(unsigned char)*(*s)++;
*nresult = *idx == 0 ? 0 : 1;
if ((hooks != NULL) && (hooks->uc_hook != NULL))
hooks->uc_hook((unsigned int)*idx, hooks->data);
return (0);
}
static int
_citrus_NONE_stdenc_cstomb(struct _citrus_stdenc * __restrict ce __unused,
char *s, size_t n, _csid_t csid, _index_t idx, void *ps __unused,
size_t *nresult, struct iconv_hooks *hooks __unused)
{
if (csid == _CITRUS_CSID_INVALID) {
*nresult = 0;
return (0);
}
if (csid != 0)
return (EILSEQ);
if ((idx & 0x000000FF) == idx) {
if (n < 1) {
*nresult = (size_t)-1;
return (E2BIG);
}
*s = (char)idx;
*nresult = 1;
} else if ((idx & 0x0000FFFF) == idx) {
if (n < 2) {
*nresult = (size_t)-1;
return (E2BIG);
}
s[0] = (char)idx;
/* XXX: might be endian dependent */
s[1] = (char)(idx >> 8);
*nresult = 2;
} else if ((idx & 0x00FFFFFF) == idx) {
if (n < 3) {
*nresult = (size_t)-1;
return (E2BIG);
}
s[0] = (char)idx;
/* XXX: might be endian dependent */
s[1] = (char)(idx >> 8);
s[2] = (char)(idx >> 16);
*nresult = 3;
} else {
if (n < 4) {
*nresult = (size_t)-1;
return (E2BIG);
}
s[0] = (char)idx;
/* XXX: might be endian dependent */
s[1] = (char)(idx >> 8);
s[2] = (char)(idx >> 16);
s[3] = (char)(idx >> 24);
*nresult = 4;
}
return (0);
}
static int
_citrus_NONE_stdenc_mbtowc(struct _citrus_stdenc * __restrict ce __unused,
_wc_t * __restrict pwc, char ** __restrict s, size_t n,
void * __restrict pspriv __unused, size_t * __restrict nresult,
struct iconv_hooks *hooks)
{
if (*s == NULL) {
*nresult = 0;
return (0);
}
if (n == 0) {
*nresult = (size_t)-2;
return (0);
}
if (pwc != NULL)
*pwc = (_wc_t)(unsigned char) **s;
*nresult = **s == '\0' ? 0 : 1;
if ((hooks != NULL) && (hooks->wc_hook != NULL))
hooks->wc_hook(*pwc, hooks->data);
return (0);
}
static int
_citrus_NONE_stdenc_wctomb(struct _citrus_stdenc * __restrict ce __unused,
char * __restrict s, size_t n, _wc_t wc,
void * __restrict pspriv __unused, size_t * __restrict nresult,
struct iconv_hooks *hooks __unused)
{
if ((wc & ~0xFFU) != 0) {
*nresult = (size_t)-1;
return (EILSEQ);
}
if (n == 0) {
*nresult = (size_t)-1;
return (E2BIG);
}
*nresult = 1;
if (s != NULL && n > 0)
*s = (char)wc;
return (0);
}
static int
_citrus_NONE_stdenc_put_state_reset(struct _citrus_stdenc * __restrict ce __unused,
char * __restrict s __unused, size_t n __unused,
void * __restrict pspriv __unused, size_t * __restrict nresult)
{
*nresult = 0;
return (0);
}
static int
_citrus_NONE_stdenc_get_state_desc(struct _stdenc * __restrict ce __unused,
void * __restrict ps __unused, int id,
struct _stdenc_state_desc * __restrict d)
{
int ret = 0;
switch (id) {
case _STDENC_SDID_GENERIC:
d->u.generic.state = _STDENC_SDGEN_INITIAL;
break;
default:
ret = EOPNOTSUPP;
}
return (ret);
}
