1 /* Copyright (C) 1996, 1997, 1998 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.
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.
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.
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. */
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
;
45 /* Tell where we want the result. */
47 data
.__outbufend
= s
+ MB_CUR_MAX
;
48 data
.__invocation_counter
= 0;
49 data
.__internal_use
= 1;
51 data
.__statep
= ps
?: &state
;
53 /* A first special case is if S is NULL. This means put PS in the
61 /* Make sure we use the correct function. */
62 update_conversion_ptrs ();
64 /* If WC is the NUL character we write into the output buffer the byte
65 sequence necessary for PS to get into the initial state, followed
69 status
= (*__wcsmbs_gconv_fcts
.tomb
->__fct
) (__wcsmbs_gconv_fcts
.tomb
,
73 if (status
== __GCONV_OK
|| status
== __GCONV_EMPTY_INPUT
)
74 *data
.__outbuf
++ = '\0';
78 /* Do a normal conversion. */
79 const unsigned char *inbuf
= (const unsigned char *) &wc
;
81 status
= (*__wcsmbs_gconv_fcts
.tomb
->__fct
) (__wcsmbs_gconv_fcts
.tomb
,
83 inbuf
+ sizeof (wchar_t),
87 /* There must not be any problems with the conversion but illegal input
88 characters. The output buffer must be large enough, otherwise the
89 definition of MB_CUR_MAX is not correct. All the other possible
90 errors also must not happen. */
91 assert (status
== __GCONV_OK
|| status
== __GCONV_EMPTY_INPUT
92 || status
== __GCONV_ILLEGAL_INPUT
93 || status
== __GCONV_INCOMPLETE_INPUT
94 || status
== __GCONV_FULL_OUTPUT
);
96 if (status
== __GCONV_OK
|| status
== __GCONV_EMPTY_INPUT
97 || status
== __GCONV_FULL_OUTPUT
)
98 result
= data
.__outbuf
- (unsigned char *) s
;
101 result
= (size_t) -1;
102 __set_errno (EILSEQ
);
107 weak_alias (__wcrtomb
, wcrtomb
)