62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/* Copyright (C) 1995 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <mbstr.h>
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#include <stdlib.h>
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/* Append no more than N multi-byte characters from SRC onto DEST. */
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char *
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mbsncat (dest, src, n)
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char *dest;
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const char *src;
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size_t n;
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{
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const char * const d = dest;
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const char * const s = src;
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size_t len = 0;
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int clen = 0;
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if (n == 0)
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return (char *) d;
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/* Reset multibyte characters to their initial state. */
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(void) mblen ((char *) NULL, 0);
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do
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{
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dest += clen;
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clen = mblen (dest, MB_CUR_MAX);
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}
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while (clen > 0);
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clen = 0;
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do
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{
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src += clen;
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clen = mblen (src, MB_CUR_MAX);
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}
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while (clen > 0 && ++len < n);
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(void) memcpy ((void *) dest, (void *) s, src - s);
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dest[src - s] = '\0'; /* '\0' is the multibyte representation of L'\0' */
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return (char *) d;
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}
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