Build aicasm as host program, not via world's compiler.
[dragonfly.git] / lib / libc / locale / gbk.c
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1/*-
2 * Copyright (c) 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Paul Borman at Krystal Technologies.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
77d11102 35 * $DragonFly: src/lib/libc/locale/Attic/gbk.c,v 1.2 2003/12/02 14:56:28 eirikn Exp $
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36 */
37
38#include <sys/cdefs.h>
39
40#include <rune.h>
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41#include <stdlib.h>
42#include <sys/types.h>
43
44rune_t _GBK_sgetrune(const char *, size_t, char const **);
45int _GBK_sputrune(rune_t, char *, size_t, char **);
46
47int
48_GBK_init(rl)
49 _RuneLocale *rl;
50{
51 rl->sgetrune = _GBK_sgetrune;
52 rl->sputrune = _GBK_sputrune;
53 _CurrentRuneLocale = rl;
54 __mb_cur_max = 2;
55 return (0);
56}
57
58static inline int
59_gbk_check(c)
60 u_int c;
61{
62 c &= 0xff;
63 return ((c >= 0x80 && c <= 0xfe) ? 2 : 1);
64}
65
66rune_t
67_GBK_sgetrune(string, n, result)
68 const char *string;
69 size_t n;
70 char const **result;
71{
72 rune_t rune = 0;
73 int len;
74
75 if (n < 1 || (len = _gbk_check(*string)) > n) {
76 if (result)
77 *result = string;
78 return (_INVALID_RUNE);
79 }
80 while (--len >= 0)
81 rune = (rune << 8) | ((u_int)(*string++) & 0xff);
82 if (result)
83 *result = string;
84 return rune;
85}
86
87int
88_GBK_sputrune(c, string, n, result)
89 rune_t c;
90 char *string, **result;
91 size_t n;
92{
93 if (c & 0x8000) {
94 if (n >= 2) {
95 string[0] = (c >> 8) & 0xff;
96 string[1] = c & 0xff;
97 if (result)
98 *result = string + 2;
99 return (2);
100 }
101 }
102 else {
103 if (n >= 1) {
104 *string = c & 0xff;
105 if (result)
106 *result = string + 1;
107 return (1);
108 }
109 }
110 if (result)
111 *result = string;
112 return (0);
113
114}
115