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fd1b5c0f | 1 | /* Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc. |
33a934a3 | 2 | This file is part of the GNU C Library. |
34992338 | 3 | Contributed by Ulrich Drepper <drepper@gnu.org>, 1996. |
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> |
34992338 | 25 | #include <limits.h> |
30de3b18 RM |
26 | |
27 | ||
28 | wint_t | |
2ad4fab2 | 29 | __btowc (c) |
30de3b18 RM |
30 | int c; |
31 | { | |
34992338 | 32 | wchar_t result; |
d64b6ad0 | 33 | struct __gconv_step_data data; |
b117f744 UD |
34 | unsigned char inbuf[1]; |
35 | const unsigned char *inptr = inbuf; | |
5e7a22c9 | 36 | size_t dummy; |
4bca4c17 UD |
37 | int status; |
38 | ||
39 | /* If the parameter does not fit into one byte or it is the EOF value | |
40 | we can give the answer now. */ | |
34992338 | 41 | if (c < SCHAR_MIN || c > UCHAR_MAX || c == EOF) |
4bca4c17 UD |
42 | return WEOF; |
43 | ||
44 | /* Tell where we want the result. */ | |
d64b6ad0 UD |
45 | data.__outbuf = (unsigned char *) &result; |
46 | data.__outbufend = data.__outbuf + sizeof (wchar_t); | |
47 | data.__invocation_counter = 0; | |
48 | data.__internal_use = 1; | |
85830c4c | 49 | data.__flags = __GCONV_IS_LAST; |
d64b6ad0 | 50 | data.__statep = &data.__state; |
4bca4c17 UD |
51 | |
52 | /* Make sure we start in the initial state. */ | |
53 | memset (&data.__state, '\0', sizeof (mbstate_t)); | |
54 | ||
55 | /* Make sure we use the correct function. */ | |
56 | update_conversion_ptrs (); | |
57 | ||
58 | /* Create the input string. */ | |
59 | inbuf[0] = c; | |
4bca4c17 | 60 | |
d64b6ad0 | 61 | status = (*__wcsmbs_gconv_fcts.towc->__fct) (__wcsmbs_gconv_fcts.towc, &data, |
fd1b5c0f UD |
62 | &inptr, inptr + 1, &dummy, |
63 | 0, 1); | |
4bca4c17 | 64 | /* The conversion failed. */ |
d64b6ad0 UD |
65 | if (status != __GCONV_OK && status != __GCONV_FULL_OUTPUT |
66 | && status != __GCONV_EMPTY_INPUT) | |
34992338 | 67 | result = WEOF; |
4bca4c17 | 68 | |
34992338 | 69 | return result; |
30de3b18 | 70 | } |
2ad4fab2 | 71 | weak_alias (__btowc, btowc) |