/* Copyright (C) 1996, 1997, 1998, 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 1996. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include #include #include #include #include #include #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_CUR_MAX]; struct gconv_step_data data; int status; size_t result; size_t dummy; /* Tell where we want the result. */ data.outbuf = s; data.outbufend = s + MB_CUR_MAX; data.invocation_counter = 0; data.internal_use = 1; data.is_last = 1; data.statep = ps ?: &state; /* A first special case is if S is NULL. This means put PS in the initial state. */ if (s == NULL) { data.outbuf = buf; wc = L'\0'; } /* Make sure we use the correct function. */ update_conversion_ptrs (); /* 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 = (*__wcsmbs_gconv_fcts.tomb->fct) (__wcsmbs_gconv_fcts.tomb, &data, NULL, NULL, &dummy, 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 = (*__wcsmbs_gconv_fcts.tomb->fct) (__wcsmbs_gconv_fcts.tomb, &data, &inbuf, inbuf + sizeof (wchar_t), &dummy, 0); } /* 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 ?: buf); else { result = (size_t) -1; __set_errno (EILSEQ); } return result; } weak_alias (__wcrtomb, wcrtomb)