1 /*	$NetBSD: citrus_iconv_none.c,v 1.3 2011/05/23 14:45:44 joerg Exp $	*/
2 
3 /*-
4  * Copyright (c)2003 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_iconv_none.c,v 1.3 2011/05/23 14:45:44 joerg Exp $");
32 #endif /* LIBC_SCCS and not lint */
33 
34 #include <assert.h>
35 #include <errno.h>
36 #include <stdlib.h>
37 #include <string.h>
38 #include <sys/queue.h>
39 
40 #include "citrus_types.h"
41 #include "citrus_module.h"
42 #include "citrus_hash.h"
43 #include "citrus_iconv.h"
44 #include "citrus_iconv_none.h"
45 
46 /* ---------------------------------------------------------------------- */
47 
48 _CITRUS_ICONV_DECLS(iconv_none);
49 _CITRUS_ICONV_DEF_OPS(iconv_none);
50 
51 
52 /* ---------------------------------------------------------------------- */
53 
54 int
55 _citrus_iconv_none_iconv_getops(struct _citrus_iconv_ops *ops, size_t lenops,
56 				uint32_t expected_version)
57 {
58 	if (expected_version<_CITRUS_ICONV_ABI_VERSION || lenops<sizeof(*ops))
59 		return (EINVAL);
60 
61 	memcpy(ops, &_citrus_iconv_none_iconv_ops,
62 	       sizeof(_citrus_iconv_none_iconv_ops));
63 
64 	return (0);
65 }
66 
67 static int
68 /*ARGSUSED*/
69 _citrus_iconv_none_iconv_init_shared(
70 	struct _citrus_iconv_shared * __restrict ci,
71 	const char * __restrict curdir,
72 	const char * __restrict in, const char * __restrict out,
73 	const void * __restrict var, size_t lenvar)
74 {
75 	ci->ci_closure = NULL;
76 	return 0;
77 }
78 
79 static void
80 /*ARGSUSED*/
81 _citrus_iconv_none_iconv_uninit_shared(struct _citrus_iconv_shared *ci)
82 {
83 }
84 
85 static int
86 /*ARGSUSED*/
87 _citrus_iconv_none_iconv_init_context(struct _citrus_iconv *cv)
88 {
89 	cv->cv_closure = NULL;
90 	return 0;
91 }
92 
93 static void
94 /*ARGSUSED*/
95 _citrus_iconv_none_iconv_uninit_context(struct _citrus_iconv *cv)
96 {
97 }
98 
99 static int
100 /*ARGSUSED*/
101 _citrus_iconv_none_iconv_convert(struct _citrus_iconv * __restrict ci,
102 				 const char * __restrict * __restrict in,
103 				 size_t * __restrict inbytes,
104 				 char * __restrict * __restrict out,
105 				 size_t * __restrict outbytes,
106 				 u_int32_t flags, size_t * __restrict invalids)
107 {
108 	int e2big;
109 	size_t len;
110 
111 	len = *inbytes;
112 	e2big = 0;
113 	if (*outbytes<len) {
114 		e2big = 1;
115 		len = *outbytes;
116 	}
117 	memcpy(*out, *in, len);
118 	in += len;
119 	*inbytes -= len;
120 	out+=len;
121 	*outbytes -= len;
122 	*invalids = 0;
123 	if (e2big) {
124 		return (E2BIG);
125 	}
126 
127 	return (0);
128 }
129