glibc/wcsmbs/mbrtowc.c

67 lines
1.7 KiB
C

/* Copyright (C) 1996 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>
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 <wchar.h>
static mbstate_t internal;
size_t
mbrtowc (pwc, s, n, ps)
wchar_t *pwc;
const char *s;
size_t n;
mbstate_t *ps;
{
wchar_t to_wide;
if (ps == NULL)
ps = &internal;
/*************************************************************\
|* This is no complete implementation. While the multi-byte *|
|* character handling is not finished this will do. *|
\*************************************************************/
if (s == NULL)
{
pwc = NULL;
s = "";
n = 1;
}
if (n == 0)
return (size_t) -2;
/* For now. */
to_wide = (wchar_t) *s;
if (pwc != NULL)
*pwc = to_wide;
if (pwc == L'\0')
{
*ps = 0; /* This is required. */
return 0;
}
/* Return code (size_t)-1 cannot happend for now. */
return 1;
}