1 /* Copyright (C) 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@cygnus.com>, 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)
41 struct __gconv_step_data data;
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
58 temp_state = *data.__statep;
59 data.__statep = &temp_state;
62 /* Tell where we want to have the result. */
64 data.__outbufend = s + MB_CUR_MAX;
66 /* Make sure we use the correct function. */
67 update_conversion_ptrs ();
69 /* If WC is the NUL character we write into the output buffer the byte
70 sequence necessary for PS to get into the initial state, followed
74 status = (*__wcsmbs_gconv_fcts.tomb->__fct) (__wcsmbs_gconv_fcts.tomb,
78 if (status == __GCONV_OK || status == __GCONV_EMPTY_INPUT)
79 *data.__outbuf++ = '\0';
83 /* Do a normal conversion. */
84 const unsigned char *inbuf = (const unsigned char *) &wc;
86 status = (*__wcsmbs_gconv_fcts.tomb->__fct) (__wcsmbs_gconv_fcts.tomb,
88 inbuf + sizeof (wchar_t),
92 /* There must not be any problems with the conversion but illegal input
93 characters. The output buffer must be large enough, otherwise the
94 definition of MB_CUR_MAX is not correct. All the other possible
95 errors also must not happen. */
96 assert (status == __GCONV_OK || status == __GCONV_EMPTY_INPUT
97 || status == __GCONV_ILLEGAL_INPUT
98 || status == __GCONV_INCOMPLETE_INPUT
99 || status == __GCONV_FULL_OUTPUT);
101 if (status == __GCONV_OK || status == __GCONV_EMPTY_INPUT
102 || status == __GCONV_FULL_OUTPUT)
103 result = data.__outbuf - (unsigned char *) s;
106 result = (size_t) -1;
107 __set_errno (EILSEQ);
112 weak_alias (__wcrtomb, wcrtomb)