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/* Copyright (C) 1995 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., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <mbstr.h>
#include <stdlib.h>
#define __need_wchar_t
/* FIXME: should be defined in stddef.h.
!!! #define __need_uwchar_t */
typedef unsigned int uwchar_t;
#include <stddef.h>
/* Compare N characters of MBS1 and MBS2. */
int
mbsncmp (mbs1, mbs2, n)
const char *mbs1;
const char *mbs2;
size_t n;
{
size_t len = 0;
int clen1 = 0;
int clen2 = 0;
uwchar_t c1;
uwchar_t c2;
if (n == 0)
return 0;
/* Reset multibyte characters to their initial state. */
(void) mblen ((char *) NULL, 0);
do
{
clen1 = mbtowc ((wchar_t *) &c1, mbs1, MB_CUR_MAX);
clen2 = mbtowc ((wchar_t *) &c2, mbs2, MB_CUR_MAX);
if (clen1 == 0)
return clen2 == 0 ? 0 : -1;
if (clen2 == 0)
return 1;
if (clen1 < 0 || clen2 < 0)
/* FIXME: an illegal character appears. What to do? */
return c1 - c2;
mbs1 += clen1;
mbs2 += clen2;
}
while (c1 == c2 && ++len < n);
return len < n ? c1 - c2 : 0;
}
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