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 <stdlib.h>
32 #include <string.h>
33 #include <sys/types.h>
34 #include "../lib/local.h"
35 #include "../lib/ucsconv.h"
36 #include "../lib/endian.h"
37
38 /*
39 * Internal 2-byte representation of UCS-2 codes without restrictions and
40 * without BOM support.
41 */
42
43 #if defined (ICONV_FROM_UCS_CES_UCS_2_INTERNAL)
44 static size_t
ucs_2_internal_convert_from_ucs(void * data,register ucs4_t in,unsigned char ** outbuf,size_t * outbytesleft)45 ucs_2_internal_convert_from_ucs (void *data,
46 register ucs4_t in,
47 unsigned char **outbuf,
48 size_t *outbytesleft)
49 {
50 (void) data;
51 if (in > 0x0000FFFF)
52 return (size_t)ICONV_CES_INVALID_CHARACTER;
53
54 if (*outbytesleft < sizeof (ucs2_t))
55 return (size_t)ICONV_CES_NOSPACE;
56
57 *((ucs2_t *)(*outbuf)) = (ucs2_t)in;
58 *outbuf += sizeof (ucs2_t);
59 *outbytesleft -= sizeof (ucs2_t);
60
61 return sizeof (ucs2_t);
62 }
63 #endif /* ICONV_FROM_UCS_CES_UCS_2_INTERNAL */
64
65 #if defined (ICONV_TO_UCS_CES_UCS_2_INTERNAL)
66 static ucs4_t
ucs_2_internal_convert_to_ucs(void * data,const unsigned char ** inbuf,size_t * inbytesleft)67 ucs_2_internal_convert_to_ucs (void *data,
68 const unsigned char **inbuf,
69 size_t *inbytesleft)
70 {
71 register ucs4_t res;
72
73 (void) data;
74 if (*inbytesleft < sizeof (ucs2_t))
75 return (ucs4_t)ICONV_CES_BAD_SEQUENCE;
76
77 res = (ucs4_t)*((ucs2_t *)(*inbuf));
78
79 if (res > 0x0000FFFF)
80 return (ucs4_t)ICONV_CES_INVALID_CHARACTER;
81
82 *inbuf += sizeof (ucs2_t);
83 *inbytesleft -= sizeof (ucs2_t);
84
85 return res;
86 }
87 #endif /* ICONV_TO_UCS_CES_UCS_2_INTERNAL */
88
89 static int
ucs_2_internal_get_mb_cur_max(void * data)90 ucs_2_internal_get_mb_cur_max (void *data)
91 {
92 (void) data;
93 return 2;
94 }
95
96 #if defined (ICONV_TO_UCS_CES_UCS_2_INTERNAL)
97 const iconv_to_ucs_ces_handlers_t
98 _iconv_to_ucs_ces_handlers_ucs_2_internal =
99 {
100 NULL,
101 NULL,
102 ucs_2_internal_get_mb_cur_max,
103 NULL,
104 NULL,
105 NULL,
106 ucs_2_internal_convert_to_ucs
107 };
108 #endif
109
110 #if defined (ICONV_FROM_UCS_CES_UCS_2_INTERNAL)
111 const iconv_from_ucs_ces_handlers_t
112 _iconv_from_ucs_ces_handlers_ucs_2_internal =
113 {
114 NULL,
115 NULL,
116 ucs_2_internal_get_mb_cur_max,
117 NULL,
118 NULL,
119 NULL,
120 ucs_2_internal_convert_from_ucs
121 };
122 #endif
123
124 #endif /* ICONV_TO_UCS_CES_UCS_2_INTERNAL || ICONV_FROM_UCS_CES_UCS_2_INTERNAL */
125
126
