1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
/* Copyright (C) 1991, 1992, 1994 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include "../locale/localeinfo.h"
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
extern int _mb_shift; /* Defined in mbtowc.c. */
/* Convert WCHAR into its multibyte character representation,
putting this in S and returning its length. */
int
wctomb (s, wchar)
register char *s;
wchar_t wchar;
{
#if 1
/* If S is NULL, just say if we're shifted or not. */
if (s == NULL)
return _mb_shift != 0;
*s = wchar;
return 1;
#else
register CONST mb_char *mb;
if (_ctype_info->mbchar == NULL)
mb = NULL;
else
mb = _ctype_info->mbchar->mb_chars;
/* If S is NULL, just say if we're shifted or not. */
if (s == NULL)
return _mb_shift != 0;
if (wchar == (wchar_t) '\0')
{
_mb_shift = 0;
/* See ANSI 4.4.1.1, line 21. */
if (s != NULL)
*s = '\0';
return 1;
}
else if (mb == NULL)
{
/* Any single byte char is a special case of multibyte ones.
- Kaz Sasayama <kaz@lilia.iijnet.or.jp>. */
if ((unsigned char) wchar == wchar)
{
*s = wchar;
return 1;
}
else
return -1;
}
mb += wchar + _mb_shift;
if (mb->string == NULL || mb->len == 0)
return -1;
memcpy((PTR) s, (CONST PTR) mb->string, mb->len + 1);
_mb_shift += mb->shift;
return mb->len;
#endif
}
|
