1 /*
2 * Copyright (c) 2003-2004, Artem B. Bityuckiy
3 * Copyright (c) 1999,2000, Konstantin Chuguev. 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 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26 #include "cesbi.h"
27
28 #if defined (ICONV_TO_UCS_CES_UCS_2_INTERNAL) \
29 || defined (ICONV_FROM_UCS_CES_UCS_2_INTERNAL)
30
31 #include <_ansi.h>
32 #include <stdlib.h>
33 #include <string.h>
34 #include <sys/types.h>
35 #include "../lib/local.h"
36 #include "../lib/ucsconv.h"
37 #include "../lib/endian.h"
38
39 /*
40 * Internal 2-byte representation of UCS-2 codes without restrictions and
41 * without BOM support.
42 */
43
44 #if defined (ICONV_FROM_UCS_CES_UCS_2_INTERNAL)
45 static size_t
ucs_2_internal_convert_from_ucs(void * data,register ucs4_t in,unsigned char ** outbuf,size_t * outbytesleft)46 ucs_2_internal_convert_from_ucs (void *data,
47 register ucs4_t in,
48 unsigned char **outbuf,
49 size_t *outbytesleft)
50 {
51 (void) data;
52 if (in > 0x0000FFFF)
53 return (size_t)ICONV_CES_INVALID_CHARACTER;
54
55 if (*outbytesleft < sizeof (ucs2_t))
56 return (size_t)ICONV_CES_NOSPACE;
57
58 *((ucs2_t *)(*outbuf)) = (ucs2_t)in;
59 *outbuf += sizeof (ucs2_t);
60 *outbytesleft -= sizeof (ucs2_t);
61
62 return sizeof (ucs2_t);
63 }
64 #endif /* ICONV_FROM_UCS_CES_UCS_2_INTERNAL */
65
66 #if defined (ICONV_TO_UCS_CES_UCS_2_INTERNAL)
67 static ucs4_t
ucs_2_internal_convert_to_ucs(void * data,const unsigned char ** inbuf,size_t * inbytesleft)68 ucs_2_internal_convert_to_ucs (void *data,
69 const unsigned char **inbuf,
70 size_t *inbytesleft)
71 {
72 register ucs4_t res;
73
74 (void) data;
75 if (*inbytesleft < sizeof (ucs2_t))
76 return (ucs4_t)ICONV_CES_BAD_SEQUENCE;
77
78 res = (ucs4_t)*((ucs2_t *)(*inbuf));
79
80 if (res > 0x0000FFFF)
81 return (ucs4_t)ICONV_CES_INVALID_CHARACTER;
82
83 *inbuf += sizeof (ucs2_t);
84 *inbytesleft -= sizeof (ucs2_t);
85
86 return res;
87 }
88 #endif /* ICONV_TO_UCS_CES_UCS_2_INTERNAL */
89
90 static int
ucs_2_internal_get_mb_cur_max(void * data)91 ucs_2_internal_get_mb_cur_max (void *data)
92 {
93 (void) data;
94 return 2;
95 }
96
97 #if defined (ICONV_TO_UCS_CES_UCS_2_INTERNAL)
98 const iconv_to_ucs_ces_handlers_t
99 _iconv_to_ucs_ces_handlers_ucs_2_internal =
100 {
101 NULL,
102 NULL,
103 ucs_2_internal_get_mb_cur_max,
104 NULL,
105 NULL,
106 NULL,
107 ucs_2_internal_convert_to_ucs
108 };
109 #endif
110
111 #if defined (ICONV_FROM_UCS_CES_UCS_2_INTERNAL)
112 const iconv_from_ucs_ces_handlers_t
113 _iconv_from_ucs_ces_handlers_ucs_2_internal =
114 {
115 NULL,
116 NULL,
117 ucs_2_internal_get_mb_cur_max,
118 NULL,
119 NULL,
120 NULL,
121 ucs_2_internal_convert_from_ucs
122 };
123 #endif
124
125 #endif /* ICONV_TO_UCS_CES_UCS_2_INTERNAL || ICONV_FROM_UCS_CES_UCS_2_INTERNAL */
126
127
