1 /*-
2 * Copyright (c) 1999,2000
3 * 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 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Konstantin Chuguev
16 * and its contributors.
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 * iconv (Charset Conversion Library) v2.0
31 */
32
33 #define ICONV_INTERNAL
34 #include <iconv.h>
35
36 static ssize_t
convert_from_ucs(struct iconv_ces * ces,ucs_t in,unsigned char ** outbuf,size_t * outbytesleft)37 convert_from_ucs(struct iconv_ces *ces, ucs_t in,
38 unsigned char **outbuf, size_t *outbytesleft)
39 {
40 if (in == UCS_CHAR_NONE)
41 return 1; /* No state reinitialization for table charsets */
42 if (*outbytesleft < sizeof(ucs4_t))
43 return 0; /* No space in the output buffer */
44 *(*(ucs4_t **)outbuf)++ = in;
45 (*outbytesleft) -= sizeof(ucs4_t);
46 return 1;
47 }
48
49 static ucs_t
convert_to_ucs(struct iconv_ces * ces,const unsigned char ** inbuf,size_t * inbytesleft)50 convert_to_ucs(struct iconv_ces *ces,
51 const unsigned char **inbuf, size_t *inbytesleft)
52 {
53 if (*inbytesleft < sizeof(ucs4_t))
54 return UCS_CHAR_NONE; /* Not enough bytes in the input buffer */
55 (*inbytesleft) -= sizeof(ucs4_t);
56 return *(*(const ucs4_t **)inbuf)++;
57 }
58
59 ICONV_CES_STATELESS_MODULE_DECL(ucs_4_internal);
60