xref: /freebsd/lib/libc/iconv/citrus_none.c (revision ad30f8e79bd1007cc2476e491bd21b4f5e389e0a)
1*ad30f8e7SGabor Kovesdan /* $FreeBSD$ */
2*ad30f8e7SGabor Kovesdan /* $NetBSD: citrus_none.c,v 1.18 2008/06/14 16:01:07 tnozaki Exp $ */
3*ad30f8e7SGabor Kovesdan 
4*ad30f8e7SGabor Kovesdan /*-
5*ad30f8e7SGabor Kovesdan  * Copyright (c) 2002 Citrus Project,
6*ad30f8e7SGabor Kovesdan  * Copyright (c) 2010 Gabor Kovesdan <gabor@FreeBSD.org>,
7*ad30f8e7SGabor Kovesdan  * All rights reserved.
8*ad30f8e7SGabor Kovesdan  *
9*ad30f8e7SGabor Kovesdan  * Redistribution and use in source and binary forms, with or without
10*ad30f8e7SGabor Kovesdan  * modification, are permitted provided that the following conditions
11*ad30f8e7SGabor Kovesdan  * are met:
12*ad30f8e7SGabor Kovesdan  * 1. Redistributions of source code must retain the above copyright
13*ad30f8e7SGabor Kovesdan  *    notice, this list of conditions and the following disclaimer.
14*ad30f8e7SGabor Kovesdan  * 2. Redistributions in binary form must reproduce the above copyright
15*ad30f8e7SGabor Kovesdan  *    notice, this list of conditions and the following disclaimer in the
16*ad30f8e7SGabor Kovesdan  *    documentation and/or other materials provided with the distribution.
17*ad30f8e7SGabor Kovesdan  *
18*ad30f8e7SGabor Kovesdan  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19*ad30f8e7SGabor Kovesdan  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20*ad30f8e7SGabor Kovesdan  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21*ad30f8e7SGabor Kovesdan  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22*ad30f8e7SGabor Kovesdan  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23*ad30f8e7SGabor Kovesdan  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24*ad30f8e7SGabor Kovesdan  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25*ad30f8e7SGabor Kovesdan  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26*ad30f8e7SGabor Kovesdan  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27*ad30f8e7SGabor Kovesdan  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28*ad30f8e7SGabor Kovesdan  * SUCH DAMAGE.
29*ad30f8e7SGabor Kovesdan  */
30*ad30f8e7SGabor Kovesdan 
31*ad30f8e7SGabor Kovesdan #include <sys/cdefs.h>
32*ad30f8e7SGabor Kovesdan #include <sys/types.h>
33*ad30f8e7SGabor Kovesdan 
34*ad30f8e7SGabor Kovesdan #include <assert.h>
35*ad30f8e7SGabor Kovesdan #include <errno.h>
36*ad30f8e7SGabor Kovesdan #include <iconv.h>
37*ad30f8e7SGabor Kovesdan #include <stddef.h>
38*ad30f8e7SGabor Kovesdan #include <stdio.h>
39*ad30f8e7SGabor Kovesdan #include <stdlib.h>
40*ad30f8e7SGabor Kovesdan #include <string.h>
41*ad30f8e7SGabor Kovesdan #include <wchar.h>
42*ad30f8e7SGabor Kovesdan 
43*ad30f8e7SGabor Kovesdan #include "citrus_namespace.h"
44*ad30f8e7SGabor Kovesdan #include "citrus_types.h"
45*ad30f8e7SGabor Kovesdan #include "citrus_module.h"
46*ad30f8e7SGabor Kovesdan #include "citrus_none.h"
47*ad30f8e7SGabor Kovesdan #include "citrus_stdenc.h"
48*ad30f8e7SGabor Kovesdan 
49*ad30f8e7SGabor Kovesdan _CITRUS_STDENC_DECLS(NONE);
50*ad30f8e7SGabor Kovesdan _CITRUS_STDENC_DEF_OPS(NONE);
51*ad30f8e7SGabor Kovesdan struct _citrus_stdenc_traits _citrus_NONE_stdenc_traits = {
52*ad30f8e7SGabor Kovesdan 	0,	/* et_state_size */
53*ad30f8e7SGabor Kovesdan 	1,	/* mb_cur_max */
54*ad30f8e7SGabor Kovesdan };
55*ad30f8e7SGabor Kovesdan 
56*ad30f8e7SGabor Kovesdan static int
57*ad30f8e7SGabor Kovesdan _citrus_NONE_stdenc_init(struct _citrus_stdenc * __restrict ce,
58*ad30f8e7SGabor Kovesdan     const void *var __unused, size_t lenvar __unused,
59*ad30f8e7SGabor Kovesdan     struct _citrus_stdenc_traits * __restrict et)
60*ad30f8e7SGabor Kovesdan {
61*ad30f8e7SGabor Kovesdan 
62*ad30f8e7SGabor Kovesdan 	et->et_state_size = 0;
63*ad30f8e7SGabor Kovesdan 	et->et_mb_cur_max = 1;
64*ad30f8e7SGabor Kovesdan 
65*ad30f8e7SGabor Kovesdan 	ce->ce_closure = NULL;
66*ad30f8e7SGabor Kovesdan 
67*ad30f8e7SGabor Kovesdan 	return (0);
68*ad30f8e7SGabor Kovesdan }
69*ad30f8e7SGabor Kovesdan 
70*ad30f8e7SGabor Kovesdan static void
71*ad30f8e7SGabor Kovesdan _citrus_NONE_stdenc_uninit(struct _citrus_stdenc *ce __unused)
72*ad30f8e7SGabor Kovesdan {
73*ad30f8e7SGabor Kovesdan 
74*ad30f8e7SGabor Kovesdan }
75*ad30f8e7SGabor Kovesdan 
76*ad30f8e7SGabor Kovesdan static int
77*ad30f8e7SGabor Kovesdan _citrus_NONE_stdenc_init_state(struct _citrus_stdenc * __restrict ce __unused,
78*ad30f8e7SGabor Kovesdan     void * __restrict ps __unused)
79*ad30f8e7SGabor Kovesdan {
80*ad30f8e7SGabor Kovesdan 
81*ad30f8e7SGabor Kovesdan 	return (0);
82*ad30f8e7SGabor Kovesdan }
83*ad30f8e7SGabor Kovesdan 
84*ad30f8e7SGabor Kovesdan static int
85*ad30f8e7SGabor Kovesdan _citrus_NONE_stdenc_mbtocs(struct _citrus_stdenc * __restrict ce __unused,
86*ad30f8e7SGabor Kovesdan     _csid_t *csid, _index_t *idx, char **s, size_t n,
87*ad30f8e7SGabor Kovesdan     void *ps __unused, size_t *nresult, struct iconv_hooks *hooks)
88*ad30f8e7SGabor Kovesdan {
89*ad30f8e7SGabor Kovesdan 
90*ad30f8e7SGabor Kovesdan 	if (n < 1) {
91*ad30f8e7SGabor Kovesdan 		*nresult = (size_t)-2;
92*ad30f8e7SGabor Kovesdan 		return (0);
93*ad30f8e7SGabor Kovesdan 	}
94*ad30f8e7SGabor Kovesdan 
95*ad30f8e7SGabor Kovesdan 	*csid = 0;
96*ad30f8e7SGabor Kovesdan 	*idx = (_index_t)(unsigned char)*(*s)++;
97*ad30f8e7SGabor Kovesdan 	*nresult = *idx == 0 ? 0 : 1;
98*ad30f8e7SGabor Kovesdan 
99*ad30f8e7SGabor Kovesdan 	if ((hooks != NULL) && (hooks->uc_hook != NULL))
100*ad30f8e7SGabor Kovesdan 		hooks->uc_hook((unsigned int)*idx, hooks->data);
101*ad30f8e7SGabor Kovesdan 
102*ad30f8e7SGabor Kovesdan 	return (0);
103*ad30f8e7SGabor Kovesdan }
104*ad30f8e7SGabor Kovesdan 
105*ad30f8e7SGabor Kovesdan static int
106*ad30f8e7SGabor Kovesdan _citrus_NONE_stdenc_cstomb(struct _citrus_stdenc * __restrict ce __unused,
107*ad30f8e7SGabor Kovesdan     char *s, size_t n, _csid_t csid, _index_t idx, void *ps __unused,
108*ad30f8e7SGabor Kovesdan     size_t *nresult, struct iconv_hooks *hooks __unused)
109*ad30f8e7SGabor Kovesdan {
110*ad30f8e7SGabor Kovesdan 
111*ad30f8e7SGabor Kovesdan 	if (csid == _CITRUS_CSID_INVALID) {
112*ad30f8e7SGabor Kovesdan 		*nresult = 0;
113*ad30f8e7SGabor Kovesdan 		return (0);
114*ad30f8e7SGabor Kovesdan 	}
115*ad30f8e7SGabor Kovesdan 	if (csid != 0)
116*ad30f8e7SGabor Kovesdan 		return (EILSEQ);
117*ad30f8e7SGabor Kovesdan 
118*ad30f8e7SGabor Kovesdan 	if ((idx & 0x000000FF) == idx) {
119*ad30f8e7SGabor Kovesdan 		if (n < 1) {
120*ad30f8e7SGabor Kovesdan 			*nresult = (size_t)-1;
121*ad30f8e7SGabor Kovesdan 			return (E2BIG);
122*ad30f8e7SGabor Kovesdan 		}
123*ad30f8e7SGabor Kovesdan 		*s = (char)idx;
124*ad30f8e7SGabor Kovesdan 		*nresult = 1;
125*ad30f8e7SGabor Kovesdan 	} else if ((idx & 0x0000FFFF) == idx) {
126*ad30f8e7SGabor Kovesdan 		if (n < 2) {
127*ad30f8e7SGabor Kovesdan 			*nresult = (size_t)-1;
128*ad30f8e7SGabor Kovesdan 			return (E2BIG);
129*ad30f8e7SGabor Kovesdan 		}
130*ad30f8e7SGabor Kovesdan 		s[0] = (char)idx;
131*ad30f8e7SGabor Kovesdan 		/* XXX: might be endian dependent */
132*ad30f8e7SGabor Kovesdan 		s[1] = (char)(idx >> 8);
133*ad30f8e7SGabor Kovesdan 		*nresult = 2;
134*ad30f8e7SGabor Kovesdan 	} else if ((idx & 0x00FFFFFF) == idx) {
135*ad30f8e7SGabor Kovesdan 		if (n < 3) {
136*ad30f8e7SGabor Kovesdan 			*nresult = (size_t)-1;
137*ad30f8e7SGabor Kovesdan 			return (E2BIG);
138*ad30f8e7SGabor Kovesdan 		}
139*ad30f8e7SGabor Kovesdan 		s[0] = (char)idx;
140*ad30f8e7SGabor Kovesdan 		/* XXX: might be endian dependent */
141*ad30f8e7SGabor Kovesdan 		s[1] = (char)(idx >> 8);
142*ad30f8e7SGabor Kovesdan 		s[2] = (char)(idx >> 16);
143*ad30f8e7SGabor Kovesdan 		*nresult = 3;
144*ad30f8e7SGabor Kovesdan 	} else {
145*ad30f8e7SGabor Kovesdan 		if (n < 3) {
146*ad30f8e7SGabor Kovesdan 			*nresult = (size_t)-1;
147*ad30f8e7SGabor Kovesdan 			return (E2BIG);
148*ad30f8e7SGabor Kovesdan 		}
149*ad30f8e7SGabor Kovesdan 		s[0] = (char)idx;
150*ad30f8e7SGabor Kovesdan 		/* XXX: might be endian dependent */
151*ad30f8e7SGabor Kovesdan 		s[1] = (char)(idx >> 8);
152*ad30f8e7SGabor Kovesdan 		s[2] = (char)(idx >> 16);
153*ad30f8e7SGabor Kovesdan 		s[3] = (char)(idx >> 24);
154*ad30f8e7SGabor Kovesdan 		*nresult = 4;
155*ad30f8e7SGabor Kovesdan 	}
156*ad30f8e7SGabor Kovesdan 
157*ad30f8e7SGabor Kovesdan 	return (0);
158*ad30f8e7SGabor Kovesdan }
159*ad30f8e7SGabor Kovesdan 
160*ad30f8e7SGabor Kovesdan static int
161*ad30f8e7SGabor Kovesdan _citrus_NONE_stdenc_mbtowc(struct _citrus_stdenc * __restrict ce __unused,
162*ad30f8e7SGabor Kovesdan     _wc_t * __restrict pwc, char ** __restrict s, size_t n,
163*ad30f8e7SGabor Kovesdan     void * __restrict pspriv __unused, size_t * __restrict nresult,
164*ad30f8e7SGabor Kovesdan     struct iconv_hooks *hooks)
165*ad30f8e7SGabor Kovesdan {
166*ad30f8e7SGabor Kovesdan 
167*ad30f8e7SGabor Kovesdan 	if (s == NULL) {
168*ad30f8e7SGabor Kovesdan 		*nresult = 0;
169*ad30f8e7SGabor Kovesdan 		return (0);
170*ad30f8e7SGabor Kovesdan 	}
171*ad30f8e7SGabor Kovesdan 	if (n == 0) {
172*ad30f8e7SGabor Kovesdan 		*nresult = (size_t)-2;
173*ad30f8e7SGabor Kovesdan 		return (0);
174*ad30f8e7SGabor Kovesdan 	}
175*ad30f8e7SGabor Kovesdan 
176*ad30f8e7SGabor Kovesdan 	if (pwc != NULL)
177*ad30f8e7SGabor Kovesdan 		*pwc = (_wc_t)(unsigned char) **s;
178*ad30f8e7SGabor Kovesdan 
179*ad30f8e7SGabor Kovesdan 	*nresult = *s == '\0' ? 0 : 1;
180*ad30f8e7SGabor Kovesdan 
181*ad30f8e7SGabor Kovesdan 	if ((hooks != NULL) && (hooks->wc_hook != NULL))
182*ad30f8e7SGabor Kovesdan 		hooks->wc_hook(*pwc, hooks->data);
183*ad30f8e7SGabor Kovesdan 
184*ad30f8e7SGabor Kovesdan 	return (0);
185*ad30f8e7SGabor Kovesdan }
186*ad30f8e7SGabor Kovesdan 
187*ad30f8e7SGabor Kovesdan static int
188*ad30f8e7SGabor Kovesdan _citrus_NONE_stdenc_wctomb(struct _citrus_stdenc * __restrict ce __unused,
189*ad30f8e7SGabor Kovesdan     char * __restrict s, size_t n, _wc_t wc,
190*ad30f8e7SGabor Kovesdan     void * __restrict pspriv __unused, size_t * __restrict nresult,
191*ad30f8e7SGabor Kovesdan     struct iconv_hooks *hooks __unused)
192*ad30f8e7SGabor Kovesdan {
193*ad30f8e7SGabor Kovesdan 	int ret;
194*ad30f8e7SGabor Kovesdan 
195*ad30f8e7SGabor Kovesdan 	if ((wc & ~0xFFU) != 0) {
196*ad30f8e7SGabor Kovesdan 		*nresult = (size_t)-1;
197*ad30f8e7SGabor Kovesdan 		return (EILSEQ);
198*ad30f8e7SGabor Kovesdan 	}
199*ad30f8e7SGabor Kovesdan 	if (n == 0) {
200*ad30f8e7SGabor Kovesdan 		*nresult = (size_t)-1;
201*ad30f8e7SGabor Kovesdan 		ret = E2BIG;
202*ad30f8e7SGabor Kovesdan 	}
203*ad30f8e7SGabor Kovesdan 
204*ad30f8e7SGabor Kovesdan 	*nresult = 1;
205*ad30f8e7SGabor Kovesdan 	if (s != NULL && n > 0)
206*ad30f8e7SGabor Kovesdan 		*s = (char)wc;
207*ad30f8e7SGabor Kovesdan 
208*ad30f8e7SGabor Kovesdan 	return (0);
209*ad30f8e7SGabor Kovesdan }
210*ad30f8e7SGabor Kovesdan 
211*ad30f8e7SGabor Kovesdan static int
212*ad30f8e7SGabor Kovesdan _citrus_NONE_stdenc_put_state_reset(struct _citrus_stdenc * __restrict ce __unused,
213*ad30f8e7SGabor Kovesdan     char * __restrict s __unused, size_t n __unused,
214*ad30f8e7SGabor Kovesdan     void * __restrict pspriv __unused, size_t * __restrict nresult)
215*ad30f8e7SGabor Kovesdan {
216*ad30f8e7SGabor Kovesdan 
217*ad30f8e7SGabor Kovesdan 	*nresult = 0;
218*ad30f8e7SGabor Kovesdan 
219*ad30f8e7SGabor Kovesdan 	return (0);
220*ad30f8e7SGabor Kovesdan }
221*ad30f8e7SGabor Kovesdan 
222*ad30f8e7SGabor Kovesdan static int
223*ad30f8e7SGabor Kovesdan _citrus_NONE_stdenc_get_state_desc(struct _stdenc * __restrict ce __unused,
224*ad30f8e7SGabor Kovesdan     void * __restrict ps __unused, int id,
225*ad30f8e7SGabor Kovesdan     struct _stdenc_state_desc * __restrict d)
226*ad30f8e7SGabor Kovesdan {
227*ad30f8e7SGabor Kovesdan 	int ret = 0;
228*ad30f8e7SGabor Kovesdan 
229*ad30f8e7SGabor Kovesdan 	switch (id) {
230*ad30f8e7SGabor Kovesdan 	case _STDENC_SDID_GENERIC:
231*ad30f8e7SGabor Kovesdan 		d->u.generic.state = _STDENC_SDGEN_INITIAL;
232*ad30f8e7SGabor Kovesdan 		break;
233*ad30f8e7SGabor Kovesdan 	default:
234*ad30f8e7SGabor Kovesdan 		ret = EOPNOTSUPP;
235*ad30f8e7SGabor Kovesdan 	}
236*ad30f8e7SGabor Kovesdan 
237*ad30f8e7SGabor Kovesdan 	return (ret);
238*ad30f8e7SGabor Kovesdan }
239