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dff8da6b | 1 | /* Copyright (C) 1996-2024 Free Software Foundation, Inc. |
33a934a3 | 2 | This file is part of the GNU C Library. |
30de3b18 | 3 | |
33a934a3 | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
30de3b18 | 8 | |
33a934a3 UD |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
30de3b18 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
30de3b18 | 17 | |
55985355 | 18 | #include <dlfcn.h> |
4bca4c17 | 19 | #include <gconv.h> |
30de3b18 | 20 | #include <stdio.h> |
4bca4c17 | 21 | #include <string.h> |
30de3b18 | 22 | #include <wchar.h> |
4bca4c17 | 23 | #include <wcsmbsload.h> |
30de3b18 | 24 | |
88f4b692 | 25 | #include <pointer_guard.h> |
915a6c51 | 26 | |
30de3b18 RM |
27 | |
28 | int | |
9d46370c | 29 | wctob (wint_t c) |
30de3b18 | 30 | { |
3cc4a097 | 31 | unsigned char buf[MB_LEN_MAX]; |
d64b6ad0 | 32 | struct __gconv_step_data data; |
4bca4c17 | 33 | wchar_t inbuf[1]; |
8619129f | 34 | wchar_t *inptr = inbuf; |
5e7a22c9 | 35 | size_t dummy; |
4bca4c17 | 36 | int status; |
96310297 | 37 | const struct gconv_fcts *fcts; |
4bca4c17 | 38 | |
0e16ecfa UD |
39 | if (c == WEOF) |
40 | return EOF; | |
41 | ||
91682d70 UD |
42 | /* We know that only ASCII compatible encodings are used for the |
43 | locale and that the wide character encoding is ISO 10646. */ | |
44 | if (c >= L'\0' && c <= L'\x7f') | |
45 | return (int) c; | |
46 | ||
4bca4c17 | 47 | /* Tell where we want the result. */ |
d64b6ad0 UD |
48 | data.__outbuf = buf; |
49 | data.__outbufend = buf + MB_LEN_MAX; | |
50 | data.__invocation_counter = 0; | |
51 | data.__internal_use = 1; | |
85830c4c | 52 | data.__flags = __GCONV_IS_LAST; |
d64b6ad0 | 53 | data.__statep = &data.__state; |
4bca4c17 UD |
54 | |
55 | /* Make sure we start in the initial state. */ | |
56 | memset (&data.__state, '\0', sizeof (mbstate_t)); | |
57 | ||
96310297 RM |
58 | /* Get the conversion functions. */ |
59 | fcts = get_gconv_fcts (_NL_CURRENT_DATA (LC_CTYPE)); | |
4bca4c17 UD |
60 | |
61 | /* Create the input string. */ | |
62 | inbuf[0] = c; | |
4bca4c17 | 63 | |
9c7ff11a | 64 | const unsigned char *argptr = (const unsigned char *) inptr; |
915a6c51 | 65 | __gconv_fct fct = fcts->tomb->__fct; |
915a6c51 UD |
66 | if (fcts->tomb->__shlib_handle != NULL) |
67 | PTR_DEMANGLE (fct); | |
915a6c51 | 68 | status = DL_CALL_FCT (fct, |
9c7ff11a UD |
69 | (fcts->tomb, &data, &argptr, |
70 | argptr + sizeof (inbuf[0]), NULL, &dummy, 0, 1)); | |
55985355 | 71 | |
4bca4c17 | 72 | /* The conversion failed or the output is too long. */ |
d64b6ad0 UD |
73 | if ((status != __GCONV_OK && status != __GCONV_FULL_OUTPUT |
74 | && status != __GCONV_EMPTY_INPUT) | |
75 | || data.__outbuf != (unsigned char *) (buf + 1)) | |
3c720987 | 76 | return EOF; |
4bca4c17 | 77 | |
91682d70 | 78 | return buf[0]; |
30de3b18 | 79 | } |