htmzhead.cc

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/* 
 *      HT Editor
 *      htmzhead.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 "htmz.h"
#include "htmzhead.h"
#include "httag.h"
#include "formats.h"
#include "snprintf.h"

static ht_mask_ptable mzheader[]=
{
        {"magic",                                                       STATICTAG_EDIT_WORD_LE("00000000")},
        {"bytes on last page of file",          STATICTAG_EDIT_WORD_LE("00000002")},
        {"pages in file",                                       STATICTAG_EDIT_WORD_LE("00000004")},
        {"number of relocations",                       STATICTAG_EDIT_WORD_LE("00000006")},
        {"size of header in paragraphs",                STATICTAG_EDIT_WORD_LE("00000008")},
        {"minimum extra paragraphs needed",     STATICTAG_EDIT_WORD_LE("0000000a")},
        {"maximum extra paragraphs needed",     STATICTAG_EDIT_WORD_LE("0000000c")},
        {"initial SS value",                            STATICTAG_EDIT_WORD_LE("0000000e")},
        {"initial SP value",                            STATICTAG_EDIT_WORD_LE("00000010")},
        {"checksum",                                            STATICTAG_EDIT_WORD_LE("00000012")},
        {"initial IP value",                            STATICTAG_EDIT_WORD_LE("00000014")},
        {"initial CS value",                            STATICTAG_EDIT_WORD_LE("00000016")},
        {"offset of relocation table",          STATICTAG_EDIT_WORD_LE("00000018")},
        {"overlay number",                                      STATICTAG_EDIT_WORD_LE("0000001a")},
        {"reserved",                                            STATICTAG_EDIT_BYTE("0000001c")" "STATICTAG_EDIT_BYTE("0000001d")" "STATICTAG_EDIT_BYTE("0000001e")" "STATICTAG_EDIT_BYTE("0000001f")" "STATICTAG_EDIT_BYTE("00000020")" "STATICTAG_EDIT_BYTE("00000021")" "STATICTAG_EDIT_BYTE("00000022")" "STATICTAG_EDIT_BYTE("00000023")},
        {"reserved",                                            STATICTAG_EDIT_BYTE("00000024")" "STATICTAG_EDIT_BYTE("00000025")" "STATICTAG_EDIT_BYTE("00000026")" "STATICTAG_EDIT_BYTE("00000027")" "STATICTAG_EDIT_BYTE("00000028")" "STATICTAG_EDIT_BYTE("00000029")" "STATICTAG_EDIT_BYTE("0000002a")" "STATICTAG_EDIT_BYTE("0000002b")},
        {"reserved",                                            STATICTAG_EDIT_BYTE("0000002c")" "STATICTAG_EDIT_BYTE("0000002d")" "STATICTAG_EDIT_BYTE("0000002e")" "STATICTAG_EDIT_BYTE("0000002f")" "STATICTAG_EDIT_BYTE("00000030")" "STATICTAG_EDIT_BYTE("00000031")" "STATICTAG_EDIT_BYTE("00000032")" "STATICTAG_EDIT_BYTE("00000033")},
        {"reserved",                                            STATICTAG_EDIT_BYTE("00000034")" "STATICTAG_EDIT_BYTE("00000035")" "STATICTAG_EDIT_BYTE("00000036")" "STATICTAG_EDIT_BYTE("00000037")" "STATICTAG_EDIT_BYTE("00000038")" "STATICTAG_EDIT_BYTE("00000039")" "STATICTAG_EDIT_BYTE("0000003a")" "STATICTAG_EDIT_BYTE("0000003b")},
        {"file offset of new executable header",STATICTAG_EDIT_DWORD_LE("0000003c")},
        {0, 0}
};

static ht_view *htmzheader_init(bounds *b, ht_streamfile *file, ht_format_group *group)
{
        ht_uformat_viewer *v=new ht_uformat_viewer();
        v->init(b, DESC_MZ_HEADER, VC_EDIT | VC_SEARCH, file, group);
        ht_mask_sub *m=new ht_mask_sub();
        m->init(file, 0);
        char info[128];
        ht_snprintf(info, sizeof info, "* MZ header at offset %08x (paragraph=16 bytes, page=512 bytes)", 0);   /* FIXME: hmm, seems to be always 0 ?! */
        m->add_mask(info);
        m->add_staticmask_ptable(mzheader, 0, false);
        v->insertsub(m);
        return v;
}

format_viewer_if htmzheader_if = {
        htmzheader_init,
        0
};

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