1 /* Copyright (C) 1991, 1992, 1995, 1996 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 Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 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 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If
16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
17 Cambridge, MA 02139, USA. */
23 /* Common state for all non-restartable conversion functions. */
24 mbstate_t __no_r_state;
26 /* Convert the multibyte character at S, which is no longer
27 than N characters, to its `wchar_t' representation, placing
28 this n *PWC and returning its length.
30 Attention: this function should NEVER be intentionally used.
31 The interface is completely stupid. The state is shared between
32 all conversion functions. You should use instead the restartable
35 mbtowc (wchar_t *pwc, const char *s, size_t n)
39 /* If S is NULL the function has to return null or not null
40 depending on the encoding having a state depending encoding or
41 not. This is nonsense because any multibyte encoding has a
42 state. The ISO C amendment 1 corrects this while introducing the
43 restartable functions. We simply say here all encodings have a
48 result = mbrtowc (pwc, s, n, &__no_r_state);
50 /* The `mbrtowc' functions tell us more than we need. Fold the -1
51 and -2 result into -1. */