1 /* $NetBSD: citrus_stdenc.c,v 1.3 2005/10/29 18:02:04 tshiozak Exp $ */
2 /* $DragonFly: src/lib/libc/citrus/citrus_stdenc.c,v 1.2 2008/04/10 10:21:01 hasso Exp $ */
5 * Copyright (c)2003 Citrus Project,
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/types.h>
36 #include "citrus_namespace.h"
37 #include "citrus_types.h"
38 #include "citrus_module.h"
39 #include "citrus_stdenc.h"
40 #include "citrus_none.h"
42 struct _citrus_stdenc _citrus_stdenc_default = {
43 &_citrus_NONE_stdenc_ops, /* ce_ops */
44 NULL, /* ce_closure */
46 &_citrus_NONE_stdenc_traits, /* ce_traits */
53 get_state_desc_default(struct _citrus_stdenc * __restrict ce,
56 struct _citrus_stdenc_state_desc * __restrict d)
62 _citrus_stdenc_open(struct _citrus_stdenc * __restrict * __restrict rce,
63 char const * __restrict encname,
64 const void * __restrict variable, size_t lenvar)
67 _citrus_module_t handle;
68 struct _citrus_stdenc *ce;
69 _citrus_stdenc_getops_t getops;
71 _DIAGASSERT(encname != NULL);
72 _DIAGASSERT(!lenvar || variable!=NULL);
73 _DIAGASSERT(rce != NULL);
75 if (!strcmp(encname, _CITRUS_DEFAULT_STDENC_NAME)) {
76 *rce = &_citrus_stdenc_default;
79 ce = malloc(sizeof(*ce));
85 ce->ce_closure = NULL;
89 ret = _citrus_load_module(&handle, encname);
93 ce->ce_module = handle;
96 (_citrus_stdenc_getops_t)_citrus_find_getops(ce->ce_module,
103 ce->ce_ops = (struct _citrus_stdenc_ops *)malloc(sizeof(*ce->ce_ops));
104 if (ce->ce_ops == NULL) {
109 ret = (*getops)(ce->ce_ops, sizeof(*ce->ce_ops),
110 _CITRUS_STDENC_ABI_VERSION);
114 /* If return ABI version is not expected, should fixup it */
115 if (ce->ce_ops->eo_abi_version < 0x00000002) {
116 ce->ce_ops->eo_get_state_desc = &get_state_desc_default;
119 /* validation check */
120 if (ce->ce_ops->eo_init == NULL ||
121 ce->ce_ops->eo_uninit == NULL ||
122 ce->ce_ops->eo_init_state == NULL ||
123 ce->ce_ops->eo_mbtocs == NULL ||
124 ce->ce_ops->eo_cstomb == NULL ||
125 ce->ce_ops->eo_mbtowc == NULL ||
126 ce->ce_ops->eo_wctomb == NULL ||
127 ce->ce_ops->eo_get_state_desc == NULL)
130 /* allocate traits */
131 ce->ce_traits = malloc(sizeof(*ce->ce_traits));
132 if (ce->ce_traits == NULL) {
136 /* init and get closure */
137 ret = (*ce->ce_ops->eo_init)(ce, variable, lenvar, ce->ce_traits);
146 _citrus_stdenc_close(ce);
151 _citrus_stdenc_close(struct _citrus_stdenc *ce)
154 _DIAGASSERT(ce != NULL);
156 if (ce == &_citrus_stdenc_default)
161 if (ce->ce_closure && ce->ce_ops->eo_uninit)
162 (*ce->ce_ops->eo_uninit)(ce);
166 _citrus_unload_module(ce->ce_module);
176 _citrus_stdenc_open(struct _citrus_stdenc * __restrict * __restrict rce,
177 char const * __restrict encname,
178 const void * __restrict variable, size_t lenvar)
180 if (!strcmp(encname, _CITRUS_DEFAULT_STDENC_NAME)) {
181 *rce = &_citrus_stdenc_default;
189 _citrus_stdenc_close(struct _citrus_stdenc *ce)