/* Copyright (C) 1991, 1992, 1995, 1996, 1997 Free Software Foundation, Inc. This file is part of the GNU C Library. 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 <stdlib.h> #include <wchar.h> /* Common state for all non-restartable conversion functions. */ mbstate_t __no_r_state; /* Convert the multibyte character at S, which is no longer than N characters, to its `wchar_t' representation, placing this n *PWC and returning its length. Attention: this function should NEVER be intentionally used. The interface is completely stupid. The state is shared between all conversion functions. You should use instead the restartable version `mbrtowc'. */ int mbtowc (wchar_t *pwc, const char *s, size_t n) { int result; /* If S is NULL the function has to return null or not null depending on the encoding having a state depending encoding or not. This is nonsense because any multibyte encoding has a state. The ISO C amendment 1 corrects this while introducing the restartable functions. We simply say here all encodings have a state. */ if (s == NULL) return 1; result = __mbrtowc (pwc, s, n, &__no_r_state); /* The `mbrtowc' functions tell us more than we need. Fold the -1 and -2 result into -1. */ if (result < 0) result = -1; return result; }