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62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
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/* 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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#define __need_wchar_t
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#include <stddef.h>
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/* Find the last occurence of MBC in MBS. */
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char *
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mbsrchr (mbs, mbc)
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const char *mbs;
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mbchar_t mbc;
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{
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const char * retval = NULL;
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int clen;
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wchar_t wc;
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wchar_t c;
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/* Reset multibyte characters to their initial state. */
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(void) mblen ((char *) NULL, 0);
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clen = mbtowc (&wc, (char *) &mbc, MB_CUR_MAX);
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if (clen < 0)
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/* FIXME: search character MBC is illegal. */
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return NULL;
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else if (clen == 0)
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wc = L'\0';
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clen = 0;
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do
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{
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mbs += clen;
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clen = mbtowc (&c, mbs, MB_CUR_MAX);
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}
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while (clen > 0 && c != wc);
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if (clen < 0)
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/* FIXME: clen < 0 means illegal character in string. */
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return NULL;
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return (char *) (clen > 0 || (clen == 0 && wc == L'\0') ? mbs : retval);
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}
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