diff options
Diffstat (limited to 'REORG.TODO/wcsmbs/wcrtomb.c')
| -rw-r--r-- | REORG.TODO/wcsmbs/wcrtomb.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/REORG.TODO/wcsmbs/wcrtomb.c b/REORG.TODO/wcsmbs/wcrtomb.c new file mode 100644 index 0000000000..cc74503374 --- /dev/null +++ b/REORG.TODO/wcsmbs/wcrtomb.c @@ -0,0 +1,120 @@ +/* Copyright (C) 1996-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <assert.h> +#include <dlfcn.h> +#include <errno.h> +#include <gconv.h> +#include <stdlib.h> +#include <wchar.h> +#include <wcsmbsload.h> + +#include <sysdep.h> + +#ifndef EILSEQ +# define EILSEQ EINVAL +#endif + + +/* This is the private state used if PS is NULL. */ +static mbstate_t state; + +size_t +__wcrtomb (char *s, wchar_t wc, mbstate_t *ps) +{ + char buf[MB_LEN_MAX]; + struct __gconv_step_data data; + int status; + size_t result; + size_t dummy; + const struct gconv_fcts *fcts; + + /* Set information for this step. */ + data.__invocation_counter = 0; + data.__internal_use = 1; + data.__flags = __GCONV_IS_LAST; + data.__statep = ps ?: &state; + + /* A first special case is if S is NULL. This means put PS in the + initial state. */ + if (s == NULL) + { + s = buf; + wc = L'\0'; + } + + /* Tell where we want to have the result. */ + data.__outbuf = (unsigned char *) s; + data.__outbufend = (unsigned char *) s + MB_CUR_MAX; + + /* Get the conversion functions. */ + fcts = get_gconv_fcts (_NL_CURRENT_DATA (LC_CTYPE)); + __gconv_fct fct = fcts->tomb->__fct; +#ifdef PTR_DEMANGLE + if (fcts->tomb->__shlib_handle != NULL) + PTR_DEMANGLE (fct); +#endif + + /* If WC is the NUL character we write into the output buffer the byte + sequence necessary for PS to get into the initial state, followed + by a NUL byte. */ + if (wc == L'\0') + { + status = DL_CALL_FCT (fct, (fcts->tomb, &data, NULL, NULL, + NULL, &dummy, 1, 1)); + + if (status == __GCONV_OK || status == __GCONV_EMPTY_INPUT) + *data.__outbuf++ = '\0'; + } + else + { + /* Do a normal conversion. */ + const unsigned char *inbuf = (const unsigned char *) &wc; + + status = DL_CALL_FCT (fct, + (fcts->tomb, &data, &inbuf, + inbuf + sizeof (wchar_t), NULL, &dummy, 0, 1)); + } + + /* There must not be any problems with the conversion but illegal input + characters. The output buffer must be large enough, otherwise the + definition of MB_CUR_MAX is not correct. All the other possible + errors also must not happen. */ + assert (status == __GCONV_OK || status == __GCONV_EMPTY_INPUT + || status == __GCONV_ILLEGAL_INPUT + || status == __GCONV_INCOMPLETE_INPUT + || status == __GCONV_FULL_OUTPUT); + + if (status == __GCONV_OK || status == __GCONV_EMPTY_INPUT + || status == __GCONV_FULL_OUTPUT) + result = data.__outbuf - (unsigned char *) s; + else + { + result = (size_t) -1; + __set_errno (EILSEQ); + } + + return result; +} +weak_alias (__wcrtomb, wcrtomb) +libc_hidden_weak (wcrtomb) + +/* There should be no difference between the UTF-32 handling required + by c32rtomb and the wchar_t handling which has long since been + implemented in wcrtomb. */ +weak_alias (__wcrtomb, c32rtomb) |