htmz.cc

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/* 
 *      HT Editor
 *      htmz.cc
 *
 *      Copyright (C) 1999-2002 Stefan Weyergraf (stefan@weyergraf.de)
 *
 *      This program is free software; you can redistribute it and/or modify
 *      it under the terms of the GNU General Public License version 2 as
 *      published by the Free Software Foundation.
 *
 *      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.
 */

#include "htendian.h"
#include "htmz.h"
#include "htmzhead.h"
#include "htmzrel.h"
#include "htmzimg.h"
#include "mzstruct.h"
#include "stream.h"

static format_viewer_if *htmz_ifs[] = {
        &htmzheader_if,
//      &htmzrel_if,
        &htmzimage_if,
        0
};

static ht_view *htmz_init(bounds *b, ht_streamfile *file, ht_format_group *format_group)
{
        byte magic[2];
        file->seek(0);
        file->read(magic, 2);
        if ((magic[0] != IMAGE_MZ_MAGIC0) || (magic[1] != IMAGE_MZ_MAGIC1))
                return NULL;

        ht_mz *g = new ht_mz();
        g->init(b, file, htmz_ifs, format_group);
        return g;
}

format_viewer_if htmz_if = {
        htmz_init,
        0
};

void ht_mz::init(bounds *b, ht_streamfile *file, format_viewer_if **ifs, ht_format_group *format_group)
{
        ht_format_group::init(b, VO_SELECTABLE | VO_BROWSABLE | VO_RESIZE, DESC_MZ, file, false, true, 0, format_group);
        ht_mz_shared_data *mz_shared = (ht_mz_shared_data*)malloc(sizeof (ht_mz_shared_data));
        shared_data = mz_shared;
        file->seek(0);
        file->read(&mz_shared->header, sizeof mz_shared->header);
        create_host_struct(&mz_shared->header, MZ_HEADER_struct, little_endian);
        shared_data = mz_shared;
        ht_format_group::init_ifs(ifs);
}

void ht_mz::done()
{
        free(shared_data);
        ht_format_group::done();
}

void ht_mz::loc_enum_start()
{
        loc_enum=1;
}

bool ht_mz::loc_enum_next(ht_format_loc *loc)
{
        ht_mz_shared_data *sh=(ht_mz_shared_data*)shared_data;
        if (loc_enum) {
                loc->name="mz";
                loc->start=0;
                loc->length=sh->header.header_size*16+(sh->header.sizep-1)*512+
                sh->header.sizelp;

                loc_enum=0;
                return true;
        }
        return false;
}

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