Repository copy libkern/{Makefile,iconv*} -> libiconv, and modify the
[dragonfly.git] / sys / libiconv / iconv_xlat.c
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1/*
2 * Copyright (c) 2000-2001, Boris Popov
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Boris Popov.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $FreeBSD: src/sys/libkern/iconv_xlat.c,v 1.1.2.1 2001/05/21 08:28:07 bp Exp $
678a32ed 33 * $DragonFly: src/sys/libiconv/iconv_xlat.c,v 1.3 2004/03/18 18:27:47 dillon Exp $
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34 */
35#include <sys/param.h>
36#include <sys/kernel.h>
37#include <sys/systm.h>
38#include <sys/malloc.h>
39#include <sys/iconv.h>
40
41#include "iconv_converter_if.h"
42
43/*
44 * "XLAT" converter
45 */
46
47#ifdef MODULE_DEPEND
48MODULE_DEPEND(iconv_xlat, libiconv, 1, 1, 1);
49#endif
50
51/*
52 * XLAT converter instance
53 */
54struct iconv_xlat {
55 KOBJ_FIELDS;
56 u_char * d_table;
57 struct iconv_cspair * d_csp;
58};
59
60static int
61iconv_xlat_open(struct iconv_converter_class *dcp,
62 struct iconv_cspair *csp, struct iconv_cspair *cspf, void **dpp)
63{
64 struct iconv_xlat *dp;
65
66 dp = (struct iconv_xlat *)kobj_create((struct kobj_class*)dcp, M_ICONV, M_WAITOK);
67 dp->d_table = csp->cp_data;
68 dp->d_csp = csp;
69 csp->cp_refcount++;
70 *dpp = (void*)dp;
71 return 0;
72}
73
74static int
75iconv_xlat_close(void *data)
76{
77 struct iconv_xlat *dp = data;
78
79 dp->d_csp->cp_refcount--;
80 kobj_delete((struct kobj*)data, M_ICONV);
81 return 0;
82}
83
84static int
85iconv_xlat_conv(void *d2p, const char **inbuf,
86 size_t *inbytesleft, char **outbuf, size_t *outbytesleft)
87{
88 struct iconv_xlat *dp = (struct iconv_xlat*)d2p;
89 const char *src;
90 char *dst;
91 int n, r;
92
93 if (inbuf == NULL || *inbuf == NULL || outbuf == NULL || *outbuf == NULL)
94 return 0;
95 r = n = min(*inbytesleft, *outbytesleft);
96 src = *inbuf;
97 dst = *outbuf;
98 while(r--)
99 *dst++ = dp->d_table[(u_char)*src++];
100 *inbuf += n;
101 *outbuf += n;
102 *inbytesleft += n;
103 *outbytesleft -= n;
104 return 0;
105}
106
107static const char *
108iconv_xlat_name(struct iconv_converter_class *dcp)
109{
110 return "xlat";
111}
112
113static kobj_method_t iconv_xlat_methods[] = {
114 KOBJMETHOD(iconv_converter_open, iconv_xlat_open),
115 KOBJMETHOD(iconv_converter_close, iconv_xlat_close),
116 KOBJMETHOD(iconv_converter_conv, iconv_xlat_conv),
117#if 0
118 KOBJMETHOD(iconv_converter_init, iconv_xlat_init),
119 KOBJMETHOD(iconv_converter_done, iconv_xlat_done),
120#endif
121 KOBJMETHOD(iconv_converter_name, iconv_xlat_name),
122 {0, 0}
123};
124
125KICONV_CONVERTER(xlat, sizeof(struct iconv_xlat));