xref: /netbsd-src/lib/libc/citrus/citrus_ctype.c (revision 85a67e61f75c076ff4d0b497160a3065fe39fc5c)
1 /*	$NetBSD: citrus_ctype.c,v 1.7 2013/05/28 16:57:56 joerg Exp $	*/
2 
3 /*-
4  * Copyright (c)1999, 2000, 2001, 2002 Citrus Project,
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 
29 #include <sys/cdefs.h>
30 #if defined(LIBC_SCCS) && !defined(lint)
31 __RCSID("$NetBSD: citrus_ctype.c,v 1.7 2013/05/28 16:57:56 joerg Exp $");
32 #endif /* LIBC_SCCS and not lint */
33 
34 #include <sys/types.h>
35 #include <assert.h>
36 #include <errno.h>
37 #include <limits.h>
38 #include <string.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <unistd.h>
42 #include <stddef.h>
43 #include <wchar.h>
44 #include "citrus_module.h"
45 #include "citrus_ctype.h"
46 #include "citrus_ctype_fallback.h"
47 #include "citrus_none.h"
48 #include _CITRUS_DEFAULT_CTYPE_HEADER
49 
50 _citrus_ctype_rec_t _citrus_ctype_default = {
51 	&_CITRUS_DEFAULT_CTYPE_OPS,	/* cc_ops */
52 	NULL,				/* cc_closure */
53 	NULL				/* cc_module */
54 };
55 
56 #ifdef _I18N_DYNAMIC
57 
58 static int _initctypemodule(_citrus_ctype_t, char const *, _citrus_module_t,
59 			    void *, size_t, size_t);
60 
61 static int
_initctypemodule(_citrus_ctype_t cc,char const * modname,_citrus_module_t handle,void * variable,size_t lenvar,size_t szpriv)62 _initctypemodule(_citrus_ctype_t cc, char const *modname,
63 		 _citrus_module_t handle, void *variable, size_t lenvar,
64 		 size_t szpriv)
65 {
66 	int ret;
67 	_citrus_ctype_getops_t getops;
68 
69 	_DIAGASSERT(cc != NULL);
70 
71 	cc->cc_module = handle;
72 
73 	getops = (_citrus_ctype_getops_t)_citrus_find_getops(cc->cc_module,
74 							     modname,
75 							     "ctype");
76 	if (getops == NULL)
77 		return (EINVAL);
78 
79 	cc->cc_ops = (_citrus_ctype_ops_rec_t *)malloc(sizeof(*cc->cc_ops));
80 	if (cc->cc_ops == NULL)
81 		return (ENOMEM);
82 
83 	ret = (*getops)(cc->cc_ops, sizeof(*cc->cc_ops),
84 			_CITRUS_CTYPE_ABI_VERSION);
85 	if (ret)
86 		goto bad;
87 
88 	/* If return ABI version is not expected, fixup it here*/
89 	switch (cc->cc_ops->co_abi_version) {
90 	case 0x00000001:
91 		cc->cc_ops->co_btowc = &_citrus_ctype_btowc_fallback;
92 		cc->cc_ops->co_wctob = &_citrus_ctype_wctob_fallback;
93 		/* FALLTHROUGH */
94 	case 0x00000002:
95 		cc->cc_ops->co_mbsnrtowcs = &_citrus_ctype_mbsnrtowcs_fallback;
96 		cc->cc_ops->co_wcsnrtombs = &_citrus_ctype_wcsnrtombs_fallback;
97 		/* FALLTHROUGH */
98 	default:
99 		break;
100 	}
101 
102 	/* validation check */
103 	if (cc->cc_ops->co_init == NULL ||
104 	    cc->cc_ops->co_uninit == NULL ||
105 	    cc->cc_ops->co_get_mb_cur_max == NULL ||
106 	    cc->cc_ops->co_mblen == NULL ||
107 	    cc->cc_ops->co_mbrlen == NULL ||
108 	    cc->cc_ops->co_mbrtowc == NULL ||
109 	    cc->cc_ops->co_mbsinit == NULL ||
110 	    cc->cc_ops->co_mbsrtowcs == NULL ||
111 	    cc->cc_ops->co_mbsnrtowcs == NULL ||
112 	    cc->cc_ops->co_mbstowcs == NULL ||
113 	    cc->cc_ops->co_mbtowc == NULL ||
114 	    cc->cc_ops->co_wcrtomb == NULL ||
115 	    cc->cc_ops->co_wcsrtombs == NULL ||
116 	    cc->cc_ops->co_wcsnrtombs == NULL ||
117 	    cc->cc_ops->co_wcstombs == NULL ||
118 	    cc->cc_ops->co_wctomb == NULL ||
119 	    cc->cc_ops->co_btowc == NULL ||
120 	    cc->cc_ops->co_wctob == NULL) {
121 		ret = EINVAL;
122 		goto bad;
123 	}
124 
125 	/* init and get closure */
126 	ret = (*cc->cc_ops->co_init)(
127 		&cc->cc_closure, variable, lenvar, szpriv);
128 	if (ret)
129 		goto bad;
130 
131 	return (0);
132 
133 bad:
134 	if (cc->cc_ops)
135 		free(cc->cc_ops);
136 	cc->cc_ops = NULL;
137 
138 	return (ret);
139 }
140 
141 int
_citrus_ctype_open(_citrus_ctype_t * rcc,char const * encname,void * variable,size_t lenvar,size_t szpriv)142 _citrus_ctype_open(_citrus_ctype_t *rcc,
143 		   char const *encname, void *variable, size_t lenvar,
144 		   size_t szpriv)
145 {
146 	int ret;
147 	_citrus_module_t handle;
148 	_citrus_ctype_t cc;
149 
150 	_DIAGASSERT(encname != NULL);
151 	_DIAGASSERT(!lenvar || variable!=NULL);
152 	_DIAGASSERT(rcc != NULL);
153 
154 	if (!strcmp(encname, _CITRUS_DEFAULT_CTYPE_NAME)) {
155 		*rcc = &_citrus_ctype_default;
156 		return (0);
157 	}
158 	ret = _citrus_load_module(&handle, encname);
159 	if (ret)
160 		return (ret);
161 
162 	cc = calloc(1, sizeof(*cc));
163 	if (!cc) {
164 		_citrus_unload_module(handle);
165 		return (errno);
166 	}
167 
168 	ret = _initctypemodule(cc, encname, handle, variable, lenvar, szpriv);
169 	if (ret) {
170 		_citrus_unload_module(cc->cc_module);
171 		free(cc);
172 		return (ret);
173 	}
174 
175 	*rcc = cc;
176 
177 	return (0);
178 }
179 
180 void
_citrus_ctype_close(_citrus_ctype_t cc)181 _citrus_ctype_close(_citrus_ctype_t cc)
182 {
183 
184 	_DIAGASSERT(cc != NULL);
185 
186 	if (cc == &_citrus_ctype_default)
187 		return;
188 	(*cc->cc_ops->co_uninit)(cc->cc_closure);
189 	free(cc->cc_ops);
190 	_citrus_unload_module(cc->cc_module);
191 	free(cc);
192 }
193 
194 #else
195 /* !_I18N_DYNAMIC */
196 
197 int
198 /*ARGSUSED*/
_citrus_ctype_open(_citrus_ctype_t * rcc,char const * encname,void * variable,size_t lenvar,size_t szpriv)199 _citrus_ctype_open(_citrus_ctype_t *rcc,
200 		   char const *encname, void *variable, size_t lenvar,
201 		   size_t szpriv)
202 {
203 	if (!strcmp(encname, _CITRUS_DEFAULT_CTYPE_NAME)) {
204 		*rcc = &_citrus_ctype_default;
205 		return (0);
206 	}
207 	return (EINVAL);
208 }
209 
210 void
211 /*ARGSUSED*/
_citrus_ctype_close(_citrus_ctype_t cc)212 _citrus_ctype_close(_citrus_ctype_t cc)
213 {
214 }
215 
216 #endif
217