citrus_iconv_none.c revision 282275 
1/* $FreeBSD: stable/10/lib/libiconv_modules/iconv_none/citrus_iconv_none.c 282275 2015-04-30 16:08:47Z tijl $ */
2/*	$NetBSD: citrus_iconv_none.c,v 1.3 2011/05/23 14:45:44 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/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
53int
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
63static 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
74static void
75/*ARGSUSED*/
76_citrus_iconv_none_iconv_uninit_shared(struct _citrus_iconv_shared *ci __unused)
77{
78
79}
80
81static 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
90static void
91/*ARGSUSED*/
92_citrus_iconv_none_iconv_uninit_context(struct _citrus_iconv *cv __unused)
93{
94
95}
96
97static int
98/*ARGSUSED*/
99_citrus_iconv_none_iconv_convert(struct _citrus_iconv * __restrict ci __unused,
100    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