minix/lib/libc/citrus/citrus_stdenc.c

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/* $NetBSD: citrus_stdenc.c,v 1.4 2011/11/19 18:39:58 tnozaki Exp $ */
/*-
* Copyright (c)2003 Citrus Project,
* 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>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: citrus_stdenc.c,v 1.4 2011/11/19 18:39:58 tnozaki Exp $");
#endif /* LIBC_SCCS and not lint */
#include "namespace.h"
#include <assert.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "citrus_namespace.h"
#include "citrus_types.h"
#include "citrus_module.h"
#include "citrus_stdenc.h"
#include "citrus_none.h"
struct _citrus_stdenc _citrus_stdenc_default = {
&_citrus_NONE_stdenc_ops, /* ce_ops */
NULL, /* ce_closure */
NULL, /* ce_module */
&_citrus_NONE_stdenc_traits, /* ce_traits */
};
#ifdef _I18N_DYNAMIC
static int
/*ARGSUSED*/
get_state_desc_default(struct _citrus_stdenc * __restrict ce,
void * __restrict ps,
int id,
struct _citrus_stdenc_state_desc * __restrict d)
{
return EOPNOTSUPP;
}
int
_citrus_stdenc_open(struct _citrus_stdenc * __restrict * __restrict rce,
char const * __restrict encname,
const void * __restrict variable, size_t lenvar)
{
int ret;
_citrus_module_t handle;
struct _citrus_stdenc *ce;
_citrus_stdenc_getops_t getops;
_DIAGASSERT(encname != NULL);
_DIAGASSERT(!lenvar || variable!=NULL);
_DIAGASSERT(rce != NULL);
if (!strcmp(encname, _CITRUS_DEFAULT_STDENC_NAME)) {
*rce = &_citrus_stdenc_default;
return (0);
}
ce = malloc(sizeof(*ce));
if (ce==NULL) {
ret = errno;
goto bad;
}
ce->ce_ops = NULL;
ce->ce_closure = NULL;
ce->ce_module = NULL;
ce->ce_traits = NULL;
ret = _citrus_load_module(&handle, encname);
if (ret)
goto bad;
ce->ce_module = handle;
getops =
(_citrus_stdenc_getops_t)_citrus_find_getops(ce->ce_module,
encname, "stdenc");
if (getops == NULL) {
ret = EINVAL;
goto bad;
}
ce->ce_ops = (struct _citrus_stdenc_ops *)malloc(sizeof(*ce->ce_ops));
if (ce->ce_ops == NULL) {
ret = errno;
goto bad;
}
ret = (*getops)(ce->ce_ops, sizeof(*ce->ce_ops),
_CITRUS_STDENC_ABI_VERSION);
if (ret)
goto bad;
/* If return ABI version is not expected, should fixup it */
if (ce->ce_ops->eo_abi_version < 0x00000002) {
ce->ce_ops->eo_get_state_desc = &get_state_desc_default;
}
/* validation check */
if (ce->ce_ops->eo_init == NULL ||
ce->ce_ops->eo_uninit == NULL ||
ce->ce_ops->eo_init_state == NULL ||
ce->ce_ops->eo_mbtocs == NULL ||
ce->ce_ops->eo_cstomb == NULL ||
ce->ce_ops->eo_mbtowc == NULL ||
ce->ce_ops->eo_wctomb == NULL ||
ce->ce_ops->eo_get_state_desc == NULL) {
ret = EINVAL;
goto bad;
}
/* allocate traits */
ce->ce_traits = malloc(sizeof(*ce->ce_traits));
if (ce->ce_traits == NULL) {
ret = errno;
goto bad;
}
/* init and get closure */
ret = (*ce->ce_ops->eo_init)(ce, variable, lenvar, ce->ce_traits);
if (ret)
goto bad;
*rce = ce;
return (0);
bad:
_citrus_stdenc_close(ce);
return (ret);
}
void
_citrus_stdenc_close(struct _citrus_stdenc *ce)
{
_DIAGASSERT(ce != NULL);
if (ce == &_citrus_stdenc_default)
return;
if (ce->ce_module) {
if (ce->ce_ops) {
if (ce->ce_closure && ce->ce_ops->eo_uninit)
(*ce->ce_ops->eo_uninit)(ce);
free(ce->ce_ops);
}
free(ce->ce_traits);
_citrus_unload_module(ce->ce_module);
}
free(ce);
}
#else
/* !_I18N_DYNAMIC */
int
/*ARGSUSED*/
_citrus_stdenc_open(struct _citrus_stdenc * __restrict * __restrict rce,
char const * __restrict encname,
const void * __restrict variable, size_t lenvar)
{
if (!strcmp(encname, _CITRUS_DEFAULT_STDENC_NAME)) {
*rce = &_citrus_stdenc_default;
return (0);
}
return (EINVAL);
}
void
/*ARGSUSED*/
_citrus_stdenc_close(struct _citrus_stdenc *ce)
{
}
#endif