1 /* $FreeBSD: head/lib/libc/iconv/citrus_none.c 281550 2015-04-15 09:09:20Z tijl $ */
2 /* $NetBSD: citrus_none.c,v 1.18 2008/06/14 16:01:07 tnozaki Exp $ */
3
4 /*-
5 * Copyright (c) 2002 Citrus Project,
6 * Copyright (c) 2010 Gabor Kovesdan <gabor@FreeBSD.org>,
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31 #include <sys/cdefs.h>
32 #include <sys/types.h>
33
34 #include <assert.h>
35 #include <errno.h>
36 #include <iconv.h>
37 #include <stddef.h>
38 #include <stdio.h>
39 #include <stdlib.h>
40 #include <string.h>
41 #include <wchar.h>
42
43 #include "citrus_namespace.h"
44 #include "citrus_types.h"
45 #include "citrus_module.h"
46 #include "citrus_none.h"
47 #include "citrus_stdenc.h"
48
49 _CITRUS_STDENC_DECLS(NONE);
50 _CITRUS_STDENC_DEF_OPS(NONE);
51 struct _citrus_stdenc_traits _citrus_NONE_stdenc_traits = {
52 0, /* et_state_size */
53 1, /* mb_cur_max */
54 };
55
56 static int
_citrus_NONE_stdenc_init(struct _citrus_stdenc * __restrict ce,const void * var __unused,size_t lenvar __unused,struct _citrus_stdenc_traits * __restrict et)57 _citrus_NONE_stdenc_init(struct _citrus_stdenc * __restrict ce,
58 const void *var __unused, size_t lenvar __unused,
59 struct _citrus_stdenc_traits * __restrict et)
60 {
61
62 et->et_state_size = 0;
63 et->et_mb_cur_max = 1;
64
65 ce->ce_closure = NULL;
66
67 return (0);
68 }
69
70 static void
_citrus_NONE_stdenc_uninit(struct _citrus_stdenc * ce __unused)71 _citrus_NONE_stdenc_uninit(struct _citrus_stdenc *ce __unused)
72 {
73
74 }
75
76 static int
_citrus_NONE_stdenc_init_state(struct _citrus_stdenc * __restrict ce __unused,void * __restrict ps __unused)77 _citrus_NONE_stdenc_init_state(struct _citrus_stdenc * __restrict ce __unused,
78 void * __restrict ps __unused)
79 {
80
81 return (0);
82 }
83
84 static int
_citrus_NONE_stdenc_mbtocs(struct _citrus_stdenc * __restrict ce __unused,_csid_t * csid,_index_t * idx,char ** s,size_t n,void * ps __unused,size_t * nresult,struct iconv_hooks * hooks)85 _citrus_NONE_stdenc_mbtocs(struct _citrus_stdenc * __restrict ce __unused,
86 _csid_t *csid, _index_t *idx, char **s, size_t n,
87 void *ps __unused, size_t *nresult, struct iconv_hooks *hooks)
88 {
89
90 if (n < 1) {
91 *nresult = (size_t)-2;
92 return (0);
93 }
94
95 *csid = 0;
96 *idx = (_index_t)(unsigned char)*(*s)++;
97 *nresult = *idx == 0 ? 0 : 1;
98
99 if ((hooks != NULL) && (hooks->uc_hook != NULL))
100 hooks->uc_hook((unsigned int)*idx, hooks->data);
101
102 return (0);
103 }
104
105 static int
_citrus_NONE_stdenc_cstomb(struct _citrus_stdenc * __restrict ce __unused,char * s,size_t n,_csid_t csid,_index_t idx,void * ps __unused,size_t * nresult,struct iconv_hooks * hooks __unused)106 _citrus_NONE_stdenc_cstomb(struct _citrus_stdenc * __restrict ce __unused,
107 char *s, size_t n, _csid_t csid, _index_t idx, void *ps __unused,
108 size_t *nresult, struct iconv_hooks *hooks __unused)
109 {
110
111 if (csid == _CITRUS_CSID_INVALID) {
112 *nresult = 0;
113 return (0);
114 }
115 if (csid != 0)
116 return (EILSEQ);
117
118 if ((idx & 0x000000FF) == idx) {
119 if (n < 1) {
120 *nresult = (size_t)-1;
121 return (E2BIG);
122 }
123 *s = (char)idx;
124 *nresult = 1;
125 } else if ((idx & 0x0000FFFF) == idx) {
126 if (n < 2) {
127 *nresult = (size_t)-1;
128 return (E2BIG);
129 }
130 s[0] = (char)idx;
131 /* XXX: might be endian dependent */
132 s[1] = (char)(idx >> 8);
133 *nresult = 2;
134 } else if ((idx & 0x00FFFFFF) == idx) {
135 if (n < 3) {
136 *nresult = (size_t)-1;
137 return (E2BIG);
138 }
139 s[0] = (char)idx;
140 /* XXX: might be endian dependent */
141 s[1] = (char)(idx >> 8);
142 s[2] = (char)(idx >> 16);
143 *nresult = 3;
144 } else {
145 if (n < 3) {
146 *nresult = (size_t)-1;
147 return (E2BIG);
148 }
149 s[0] = (char)idx;
150 /* XXX: might be endian dependent */
151 s[1] = (char)(idx >> 8);
152 s[2] = (char)(idx >> 16);
153 s[3] = (char)(idx >> 24);
154 *nresult = 4;
155 }
156
157 return (0);
158 }
159
160 static int
_citrus_NONE_stdenc_mbtowc(struct _citrus_stdenc * __restrict ce __unused,_wc_t * __restrict pwc,char ** __restrict s,size_t n,void * __restrict pspriv __unused,size_t * __restrict nresult,struct iconv_hooks * hooks)161 _citrus_NONE_stdenc_mbtowc(struct _citrus_stdenc * __restrict ce __unused,
162 _wc_t * __restrict pwc, char ** __restrict s, size_t n,
163 void * __restrict pspriv __unused, size_t * __restrict nresult,
164 struct iconv_hooks *hooks)
165 {
166 _DIAGASSERT(s != NULL);
167
168 if (*s == NULL) {
169 *nresult = 0;
170 return (0);
171 }
172 if (n == 0) {
173 *nresult = (size_t)-2;
174 return (0);
175 }
176
177 if (pwc != NULL)
178 *pwc = (_wc_t)(unsigned char) **s;
179
180 *nresult = **s == '\0' ? 0 : 1;
181
182 if ((hooks != NULL) && (hooks->wc_hook != NULL))
183 hooks->wc_hook(*pwc, hooks->data);
184
185 return (0);
186 }
187
188 static int
_citrus_NONE_stdenc_wctomb(struct _citrus_stdenc * __restrict ce __unused,char * __restrict s,size_t n,_wc_t wc,void * __restrict pspriv __unused,size_t * __restrict nresult,struct iconv_hooks * hooks __unused)189 _citrus_NONE_stdenc_wctomb(struct _citrus_stdenc * __restrict ce __unused,
190 char * __restrict s, size_t n, _wc_t wc,
191 void * __restrict pspriv __unused, size_t * __restrict nresult,
192 struct iconv_hooks *hooks __unused)
193 {
194
195 if ((wc & ~0xFFU) != 0) {
196 *nresult = (size_t)-1;
197 return (EILSEQ);
198 }
199 if (n == 0) {
200 *nresult = (size_t)-1;
201 return (E2BIG);
202 }
203
204 *nresult = 1;
205 if (s != NULL && n > 0)
206 *s = (char)wc;
207
208 return (0);
209 }
210
211 static int
_citrus_NONE_stdenc_put_state_reset(struct _citrus_stdenc * __restrict ce __unused,char * __restrict s __unused,size_t n __unused,void * __restrict pspriv __unused,size_t * __restrict nresult)212 _citrus_NONE_stdenc_put_state_reset(struct _citrus_stdenc * __restrict ce __unused,
213 char * __restrict s __unused, size_t n __unused,
214 void * __restrict pspriv __unused, size_t * __restrict nresult)
215 {
216
217 *nresult = 0;
218
219 return (0);
220 }
221
222 static int
_citrus_NONE_stdenc_get_state_desc(struct _stdenc * __restrict ce __unused,void * __restrict ps __unused,int id,struct _stdenc_state_desc * __restrict d)223 _citrus_NONE_stdenc_get_state_desc(struct _stdenc * __restrict ce __unused,
224 void * __restrict ps __unused, int id,
225 struct _stdenc_state_desc * __restrict d)
226 {
227 int ret = 0;
228
229 switch (id) {
230 case _STDENC_SDID_GENERIC:
231 d->u.generic.state = _STDENC_SDGEN_INITIAL;
232 break;
233 default:
234 ret = EOPNOTSUPP;
235 }
236
237 return (ret);
238 }
239