/*
 * This source code is part of hsc, a html-preprocessor,
 * Copyright (C) 1995-1998  Thomas Aglassinger
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */
/*
 *  hsclib/tag_a.c
 *
 *  tag-callback for "<A..>" (anchor)
 *
 *  updated: 16-Dec-1997
 *  created:  3-Aug-1995
 */

#include "hsclib/inc_tagcb.h"
#include "hscprj/document.h"

/*
 *  handle_anchor
 *
 *  handle tag <A>:
 *  - check for HREF set
 *  - update value for attribute HSC.ANCHOR
 */
BOOL handle_anchor(HSCPRC * hp, HSCTAG * tag)
{
    HSCVAR *vhref = find_varname(tag->attr, "HREF");
    HSCVAR *vname = find_varname(tag->attr, "NAME");
    HSCVAR *vid   = find_varname(tag->attr, "ID");
    STRPTR href = NULL;
    STRPTR name = NULL;
    STRPTR id = NULL;

    /* set attribute values */
    if (vhref)
    {
        href = vhref->text;
    }
    if (vname)
    {
        name = vname->text;
    }
    if (vid)
    {
        id = vid->text;
    }

    /* tell parser that he is inside an anchor */
    if (href)
    {
        HSCATTR *anchor_attr = find_varname(hp->defattr, ANCHOR_ATTR);

        if (anchor_attr)
        {
            set_vartext(anchor_attr, href);
        }
        else
        {
            panic("no anchor-attribute");
        }

        hp->inside_anchor = TRUE;
    }

    /* check for both HREF and NAME missing */
    if ((!href) && (!name) && (!id))
    {
        hsc_message(hp, MSG_ANCH_NO_NMHR,
                    "%T without HREF, NAME or ID", tag);
    }

    return (TRUE);
}

/*
 *  handle_cancher
 *
 *  closing handle for <A>
 */
BOOL handle_canchor(HSCPRC * hp, HSCTAG * tag)
{
    hp->inside_anchor = FALSE;

    /* write whole tag */

    return (TRUE);

}