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
|
/* Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>
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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <gconv.h>
#include <stdio.h>
#include <string.h>
#include <wchar.h>
#include <wcsmbsload.h>
wint_t
btowc (c)
int c;
{
char buf[sizeof (wchar_t)];
struct gconv_step_data data;
char inbuf[1];
size_t inbytes;
size_t converted;
int status;
/* If the parameter does not fit into one byte or it is the EOF value
we can give the answer now. */
if (c < -128 || c > 127 || c == EOF)
return WEOF;
/* Tell where we want the result. */
data.outbuf = (char *) buf;
data.outbufavail = 0;
data.outbufsize = sizeof (wchar_t);
data.is_last = 1;
data.statep = &data.__state;
/* Make sure we start in the initial state. */
memset (&data.__state, '\0', sizeof (mbstate_t));
/* Make sure we use the correct function. */
update_conversion_ptrs ();
/* Create the input string. */
inbuf[0] = c;
inbytes = 1;
status = (*__wcsmbs_gconv_fcts.towc->fct) (__wcsmbs_gconv_fcts.towc,
&data, inbuf, &inbytes,
&converted, 0);
/* The conversion failed. */
if (status != GCONV_OK && status != GCONV_FULL_OUTPUT
&& status != GCONV_EMPTY_INPUT)
return WEOF;
return *(wchar_t *)buf;
}
|
