1 /* $FreeBSD: head/lib/libiconv_modules/iconv_none/citrus_iconv_none.c 252583 2013-07-03 18:27:45Z peter $ */
2 /*	$NetBSD: citrus_iconv_none.c,v 1.2 2003/07/01 09:42:16 tshiozak 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/cdefs.h>
31 #include <sys/queue.h>
32 
33 #include <assert.h>
34 #include <errno.h>
35 #include <stdbool.h>
36 #include <stdlib.h>
37 #include <string.h>
38 
39 #include "citrus_types.h"
40 #include "citrus_module.h"
41 #include "citrus_hash.h"
42 #include "citrus_iconv.h"
43 #include "citrus_iconv_none.h"
44 
45 /* ---------------------------------------------------------------------- */
46 
47 _CITRUS_ICONV_DECLS(iconv_none);
48 _CITRUS_ICONV_DEF_OPS(iconv_none);
49 
50 
51 /* ---------------------------------------------------------------------- */
52 
53 int
54 _citrus_iconv_none_iconv_getops(struct _citrus_iconv_ops *ops)
55 {
56 
57 	memcpy(ops, &_citrus_iconv_none_iconv_ops,
58 	       sizeof(_citrus_iconv_none_iconv_ops));
59 
60 	return (0);
61 }
62 
63 static int
64 /*ARGSUSED*/
65 _citrus_iconv_none_iconv_init_shared(
66     struct _citrus_iconv_shared * __restrict ci,
67     const char * __restrict in __unused, const char * __restrict out __unused)
68 {
69 
70 	ci->ci_closure = NULL;
71 	return (0);
72 }
73 
74 static void
75 /*ARGSUSED*/
76 _citrus_iconv_none_iconv_uninit_shared(struct _citrus_iconv_shared *ci __unused)
77 {
78 
79 }
80 
81 static int
82 /*ARGSUSED*/
83 _citrus_iconv_none_iconv_init_context(struct _citrus_iconv *cv)
84 {
85 
86 	cv->cv_closure = NULL;
87 	return (0);
88 }
89 
90 static void
91 /*ARGSUSED*/
92 _citrus_iconv_none_iconv_uninit_context(struct _citrus_iconv *cv __unused)
93 {
94 
95 }
96 
97 static int
98 /*ARGSUSED*/
99 _citrus_iconv_none_iconv_convert(struct _citrus_iconv * __restrict ci __unused,
100     const char * __restrict * __restrict in, size_t * __restrict inbytes,
101     char * __restrict * __restrict out, size_t * __restrict outbytes,
102     uint32_t flags __unused, size_t * __restrict invalids)
103 {
104 	size_t len;
105 	int e2big;
106 
107 	if ((in == NULL) || (out == NULL) || (inbytes == NULL))
108 		return (0);
109 	if ((*in == NULL) || (*out == NULL) || (*inbytes == 0) || (*outbytes == 0))
110 		return (0);
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 	return (0);
127 }
128