Subversion Repositories planix.SVN

/*
 * Changes by Gunnar Ritter, Freiburg i. Br., Germany, November 2002.
 *
 * Sccsid @(#)_collmult.c       1.4 (gritter) 9/22/03
 */
/*  UNIX(R) Regular Expresssion Library
 *
 *  Note: Code is released under the GNU LGPL
 *
 *  Copyright (C) 2001 Caldera International, Inc.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to:
 *        Free Software Foundation, Inc.
 *        59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/*      #include "synonyms.h"   */
#include "colldata.h"
#include <stddef.h>

#define CCM(p)  ((const CollMult *)(p))

LIBUXRE_STATIC const CollElem *
libuxre_collmult(struct lc_collate *col, const CollElem *cep, wchar_t wc)
{
        const char *tbl;
        size_t sz;
        w_type ch;

        if (col == 0 || cep->multbeg == 0
                || (tbl = (const char *)col->multtbl) == 0)
        {
                return ELEM_BADCHAR;
        }
        sz = col->elemsize + (sizeof(CollMult) - sizeof(CollElem));
        tbl += sz * cep->multbeg;
        while ((ch = CCM(tbl)->ch) != wc)
        {
                if (ch == 0)
                        return ELEM_BADCHAR;    /* end of list */
                tbl += sz;
        }
        return &CCM(tbl)->elem;
}