1 /* Copyright (C) 1996-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
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.
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
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
24 #include <wcsmbsload.h>
29 # define EILSEQ EINVAL
33 /* This is the private state used if PS is NULL. */
34 static mbstate_t state
;
37 __wcrtomb (char *s
, wchar_t wc
, mbstate_t *ps
)
40 struct __gconv_step_data data
;
44 const struct gconv_fcts
*fcts
;
46 /* Set information for this step. */
47 data
.__invocation_counter
= 0;
48 data
.__internal_use
= 1;
49 data
.__flags
= __GCONV_IS_LAST
;
50 data
.__statep
= ps
?: &state
;
52 /* A first special case is if S is NULL. This means put PS in the
60 /* Tell where we want to have the result. */
61 data
.__outbuf
= (unsigned char *) s
;
62 data
.__outbufend
= (unsigned char *) s
+ MB_CUR_MAX
;
64 /* Get the conversion functions. */
65 fcts
= get_gconv_fcts (_NL_CURRENT_DATA (LC_CTYPE
));
66 __gconv_fct fct
= fcts
->tomb
->__fct
;
68 if (fcts
->tomb
->__shlib_handle
!= NULL
)
72 /* If WC is the NUL character we write into the output buffer the byte
73 sequence necessary for PS to get into the initial state, followed
77 status
= DL_CALL_FCT (fct
, (fcts
->tomb
, &data
, NULL
, NULL
,
80 if (status
== __GCONV_OK
|| status
== __GCONV_EMPTY_INPUT
)
81 *data
.__outbuf
++ = '\0';
85 /* Do a normal conversion. */
86 const unsigned char *inbuf
= (const unsigned char *) &wc
;
88 status
= DL_CALL_FCT (fct
,
89 (fcts
->tomb
, &data
, &inbuf
,
90 inbuf
+ sizeof (wchar_t), NULL
, &dummy
, 0, 1));
93 /* There must not be any problems with the conversion but illegal input
94 characters. The output buffer must be large enough, otherwise the
95 definition of MB_CUR_MAX is not correct. All the other possible
96 errors also must not happen. */
97 assert (status
== __GCONV_OK
|| status
== __GCONV_EMPTY_INPUT
98 || status
== __GCONV_ILLEGAL_INPUT
99 || status
== __GCONV_INCOMPLETE_INPUT
100 || status
== __GCONV_FULL_OUTPUT
);
102 if (status
== __GCONV_OK
|| status
== __GCONV_EMPTY_INPUT
103 || status
== __GCONV_FULL_OUTPUT
)
104 result
= data
.__outbuf
- (unsigned char *) s
;
107 result
= (size_t) -1;
108 __set_errno (EILSEQ
);
113 weak_alias (__wcrtomb
, wcrtomb
)
114 libc_hidden_weak (wcrtomb
)