| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* Copyright (C) 1996-2016 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
| 3 | Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1996. |
| 4 | |
| 5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 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 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #include <dlfcn.h> |
| 20 | #include <gconv.h> |
| 21 | #include <stdio.h> |
| 22 | #include <string.h> |
| 23 | #include <wchar.h> |
| 24 | #include <wcsmbsload.h> |
| 25 | |
| 26 | #include <sysdep.h> |
| 27 | |
| 28 | |
| 29 | int |
| 30 | wctob (wint_t c) |
| 31 | { |
| 32 | unsigned char buf[MB_LEN_MAX]; |
| 33 | struct __gconv_step_data data; |
| 34 | wchar_t inbuf[1]; |
| 35 | wchar_t *inptr = inbuf; |
| 36 | size_t dummy; |
| 37 | int status; |
| 38 | const struct gconv_fcts *fcts; |
| 39 | |
| 40 | if (c == WEOF) |
| 41 | return EOF; |
| 42 | |
| 43 | /* We know that only ASCII compatible encodings are used for the |
| 44 | locale and that the wide character encoding is ISO 10646. */ |
| 45 | if (c >= L'\0' && c <= L'\x7f') |
| 46 | return (int) c; |
| 47 | |
| 48 | /* Tell where we want the result. */ |
| 49 | data.__outbuf = buf; |
| 50 | data.__outbufend = buf + MB_LEN_MAX; |
| 51 | data.__invocation_counter = 0; |
| 52 | data.__internal_use = 1; |
| 53 | data.__flags = __GCONV_IS_LAST; |
| 54 | data.__statep = &data.__state; |
| 55 | |
| 56 | /* Make sure we start in the initial state. */ |
| 57 | memset (&data.__state, '\0', sizeof (mbstate_t)); |
| 58 | |
| 59 | /* Get the conversion functions. */ |
| 60 | fcts = get_gconv_fcts (_NL_CURRENT_DATA (LC_CTYPE)); |
| 61 | |
| 62 | /* Create the input string. */ |
| 63 | inbuf[0] = c; |
| 64 | |
| 65 | const unsigned char *argptr = (const unsigned char *) inptr; |
| 66 | __gconv_fct fct = fcts->tomb->__fct; |
| 67 | #ifdef PTR_DEMANGLE |
| 68 | if (fcts->tomb->__shlib_handle != NULL) |
| 69 | PTR_DEMANGLE (fct); |
| 70 | #endif |
| 71 | status = DL_CALL_FCT (fct, |
| 72 | (fcts->tomb, &data, &argptr, |
| 73 | argptr + sizeof (inbuf[0]), NULL, &dummy, 0, 1)); |
| 74 | |
| 75 | /* The conversion failed or the output is too long. */ |
| 76 | if ((status != __GCONV_OK && status != __GCONV_FULL_OUTPUT |
| 77 | && status != __GCONV_EMPTY_INPUT) |
| 78 | || data.__outbuf != (unsigned char *) (buf + 1)) |
| 79 | return EOF; |
| 80 | |
| 81 | return buf[0]; |
| 82 | } |