Add citrus backend code and iconv front end. This is intentionally
[dragonfly.git] / lib / libc / citrus / citrus_stdenc.c
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2180e8af
JS
1/* $NetBSD: src/lib/libc/citrus/citrus_stdenc.c,v 1.2 2003/07/10 08:50:44 tshiozak Exp $ */
2/* $DragonFly: src/lib/libc/citrus/citrus_stdenc.c,v 1.1 2005/03/11 23:33:53 joerg Exp $ */
3
4/*-
5 * Copyright (c)2003 Citrus Project,
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
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.
16 *
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
27 * SUCH DAMAGE.
28 */
29
30#include <sys/types.h>
31#include <assert.h>
32#include <errno.h>
33#include <stdlib.h>
34#include <string.h>
35
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"
41
42struct _citrus_stdenc _citrus_stdenc_default = {
43 &_citrus_NONE_stdenc_ops, /* ce_ops */
44 NULL, /* ce_closure */
45 NULL, /* ce_module */
46 &_citrus_NONE_stdenc_traits, /* ce_traits */
47};
48
49#ifdef _I18N_DYNAMIC
50
51int
52_citrus_stdenc_open(struct _citrus_stdenc * __restrict * __restrict rce,
53 char const * __restrict encname,
54 const void * __restrict variable, size_t lenvar)
55{
56 int ret;
57 _citrus_module_t handle;
58 struct _citrus_stdenc *ce;
59 _citrus_stdenc_getops_t getops;
60
61 _DIAGASSERT(encname != NULL);
62 _DIAGASSERT(!lenvar || variable!=NULL);
63 _DIAGASSERT(rce != NULL);
64
65 if (!strcmp(encname, _CITRUS_DEFAULT_STDENC_NAME)) {
66 *rce = &_citrus_stdenc_default;
67 return (0);
68 }
69 ce = malloc(sizeof(*ce));
70 if (ce==NULL) {
71 ret = errno;
72 goto bad;
73 }
74 ce->ce_ops = NULL;
75 ce->ce_closure = NULL;
76 ce->ce_module = NULL;
77 ce->ce_traits = NULL;
78
79 ret = _citrus_load_module(&handle, encname);
80 if (ret)
81 goto bad;
82
83 ce->ce_module = handle;
84
85 getops =
86 (_citrus_stdenc_getops_t)_citrus_find_getops(ce->ce_module,
87 encname, "stdenc");
88 if (getops == NULL) {
89 ret = EINVAL;
90 goto bad;
91 }
92
93 ce->ce_ops = (struct _citrus_stdenc_ops *)malloc(sizeof(*ce->ce_ops));
94 if (ce->ce_ops == NULL) {
95 ret = errno;
96 goto bad;
97 }
98
99 ret = (*getops)(ce->ce_ops, sizeof(*ce->ce_ops),
100 _CITRUS_STDENC_ABI_VERSION);
101 if (ret)
102 goto bad;
103
104 /* If return ABI version is not expected, should fixup it */
105
106 /* validation check */
107 if (ce->ce_ops->eo_init == NULL ||
108 ce->ce_ops->eo_uninit == NULL ||
109 ce->ce_ops->eo_init_state == NULL ||
110 ce->ce_ops->eo_mbtocs == NULL ||
111 ce->ce_ops->eo_cstomb == NULL ||
112 ce->ce_ops->eo_mbtowc == NULL ||
113 ce->ce_ops->eo_wctomb == NULL)
114 goto bad;
115
116 /* allocate traits */
117 ce->ce_traits = malloc(sizeof(*ce->ce_traits));
118 if (ce->ce_traits == NULL) {
119 ret = errno;
120 goto bad;
121 }
122 /* init and get closure */
123 ret = (*ce->ce_ops->eo_init)(ce, variable, lenvar, ce->ce_traits);
124 if (ret)
125 goto bad;
126
127 *rce = ce;
128
129 return (0);
130
131bad:
132 _citrus_stdenc_close(ce);
133 return (ret);
134}
135
136void
137_citrus_stdenc_close(struct _citrus_stdenc *ce)
138{
139
140 _DIAGASSERT(ce != NULL);
141
142 if (ce == &_citrus_stdenc_default)
143 return;
144
145 if (ce->ce_module) {
146 if (ce->ce_ops) {
147 if (ce->ce_closure && ce->ce_ops->eo_uninit)
148 (*ce->ce_ops->eo_uninit)(ce);
149 free(ce->ce_ops);
150 }
151 free(ce->ce_traits);
152 _citrus_unload_module(ce->ce_module);
153 }
154 free(ce);
155}
156
157#else
158/* !_I18N_DYNAMIC */
159
160int
161/*ARGSUSED*/
162_citrus_stdenc_open(struct _citrus_stdenc * __restrict * __restrict rce,
163 char const * __restrict encname,
164 const void * __restrict variable, size_t lenvar)
165{
166 if (!strcmp(encname, _CITRUS_DEFAULT_STDENC_NAME)) {
167 *rce = &_citrus_stdenc_default;
168 return (0);
169 }
170 return (EINVAL);
171}
172
173void
174/*ARGSUSED*/
175_citrus_stdenc_close(struct _citrus_stdenc *ce)
176{
177}
178
179#endif