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4bca4c17 | 1 | /* Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc. |
33a934a3 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu> | |
30de3b18 | 4 | |
33a934a3 UD |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Library General Public License as | |
7 | published by the Free Software Foundation; either version 2 of the | |
8 | License, or (at your option) any later version. | |
30de3b18 | 9 | |
33a934a3 UD |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Library General Public License for more details. | |
30de3b18 | 14 | |
33a934a3 UD |
15 | You should have received a copy of the GNU Library General Public |
16 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
17 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
18 | Boston, MA 02111-1307, USA. */ | |
30de3b18 | 19 | |
4bca4c17 | 20 | #include <gconv.h> |
30de3b18 | 21 | #include <stdio.h> |
4bca4c17 | 22 | #include <string.h> |
30de3b18 | 23 | #include <wchar.h> |
4bca4c17 | 24 | #include <wcsmbsload.h> |
30de3b18 RM |
25 | |
26 | ||
27 | wint_t | |
2ad4fab2 | 28 | __btowc (c) |
30de3b18 RM |
29 | int c; |
30 | { | |
4bca4c17 UD |
31 | char buf[sizeof (wchar_t)]; |
32 | struct gconv_step_data data; | |
33 | char inbuf[1]; | |
34 | size_t inbytes; | |
35 | size_t converted; | |
36 | int status; | |
37 | ||
38 | /* If the parameter does not fit into one byte or it is the EOF value | |
39 | we can give the answer now. */ | |
40 | if (c < -128 || c > 127 || c == EOF) | |
41 | return WEOF; | |
42 | ||
43 | /* Tell where we want the result. */ | |
44 | data.outbuf = (char *) buf; | |
45 | data.outbufavail = 0; | |
46 | data.outbufsize = sizeof (wchar_t); | |
47 | data.is_last = 1; | |
48 | data.statep = &data.__state; | |
49 | ||
50 | /* Make sure we start in the initial state. */ | |
51 | memset (&data.__state, '\0', sizeof (mbstate_t)); | |
52 | ||
53 | /* Make sure we use the correct function. */ | |
54 | update_conversion_ptrs (); | |
55 | ||
56 | /* Create the input string. */ | |
57 | inbuf[0] = c; | |
58 | inbytes = 1; | |
59 | ||
60 | status = (*__wcsmbs_gconv_fcts.towc->fct) (__wcsmbs_gconv_fcts.towc, | |
61 | &data, inbuf, &inbytes, | |
62 | &converted, 0); | |
63 | /* The conversion failed. */ | |
3c720987 UD |
64 | if (status != GCONV_OK && status != GCONV_FULL_OUTPUT |
65 | && status != GCONV_EMPTY_INPUT) | |
30de3b18 | 66 | return WEOF; |
4bca4c17 UD |
67 | |
68 | return *(wchar_t *)buf; | |
30de3b18 | 69 | } |
2ad4fab2 | 70 | weak_alias (__btowc, btowc) |