1/* $FreeBSD$ */
2/*	$NetBSD: citrus_iconv_none.c,v 1.3 2011/05/23 14:45:44 joerg Exp $	*/
3
4/*-
5 * SPDX-License-Identifier: BSD-2-Clause
6 *
7 * Copyright (c)2003 Citrus Project,
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33#include <sys/queue.h>
34
35#include <assert.h>
36#include <errno.h>
37#include <stdbool.h>
38#include <stdlib.h>
39#include <string.h>
40
41#include "citrus_types.h"
42#include "citrus_module.h"
43#include "citrus_hash.h"
44#include "citrus_iconv.h"
45#include "citrus_iconv_none.h"
46
47/* ---------------------------------------------------------------------- */
48
49_CITRUS_ICONV_DECLS(iconv_none);
50_CITRUS_ICONV_DEF_OPS(iconv_none);
51
52
53/* ---------------------------------------------------------------------- */
54
55int
56_citrus_iconv_none_iconv_getops(struct _citrus_iconv_ops *ops)
57{
58
59	memcpy(ops, &_citrus_iconv_none_iconv_ops,
60	       sizeof(_citrus_iconv_none_iconv_ops));
61
62	return (0);
63}
64
65static int
66/*ARGSUSED*/
67_citrus_iconv_none_iconv_init_shared(
68    struct _citrus_iconv_shared * __restrict ci,
69    const char * __restrict in __unused, const char * __restrict out __unused)
70{
71
72	ci->ci_closure = NULL;
73	return (0);
74}
75
76static void
77/*ARGSUSED*/
78_citrus_iconv_none_iconv_uninit_shared(struct _citrus_iconv_shared *ci __unused)
79{
80
81}
82
83static int
84/*ARGSUSED*/
85_citrus_iconv_none_iconv_init_context(struct _citrus_iconv *cv)
86{
87
88	cv->cv_closure = NULL;
89	return (0);
90}
91
92static void
93/*ARGSUSED*/
94_citrus_iconv_none_iconv_uninit_context(struct _citrus_iconv *cv __unused)
95{
96
97}
98
99static int
100/*ARGSUSED*/
101_citrus_iconv_none_iconv_convert(struct _citrus_iconv * __restrict ci __unused,
102    char * __restrict * __restrict in, size_t * __restrict inbytes,
103    char * __restrict * __restrict out, size_t * __restrict outbytes,
104    uint32_t flags __unused, size_t * __restrict invalids)
105{
106	size_t len;
107	int e2big;
108
109	if ((in == NULL) || (out == NULL) || (inbytes == NULL))
110		return (0);
111	if ((*in == NULL) || (*out == NULL) || (*inbytes == 0) || (*outbytes == 0))
112		return (0);
113	len = *inbytes;
114	e2big = 0;
115	if (*outbytes<len) {
116		e2big = 1;
117		len = *outbytes;
118	}
119	memcpy(*out, *in, len);
120	in += len;
121	*inbytes -= len;
122	out += len;
123	*outbytes -= len;
124	*invalids = 0;
125	if (e2big)
126		return (E2BIG);
127
128	return (0);
129}
130