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// -*- related-file-name: "../include/efont/otfos2.hh" -*-
/* otfos2.{cc,hh} -- OpenType OS/2 table
*
* Copyright (c) 2005-2011 Eddie Kohler
*
* 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.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <efont/otfos2.hh>
#include <lcdf/error.hh>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
namespace Efont { namespace OpenType {
Os2::Os2(const Data &data, ErrorHandler *errh)
: _data(data)
{
_error = parse_header(errh ? errh : ErrorHandler::silent_handler());
if (_error < 0)
_data = Data();
}
int
Os2::parse_header(ErrorHandler *errh)
{
// HEADER FORMAT:
// USHORT version
if (HEADER_SIZE > _data.length())
return errh->error("OTF OS/2 too small for header"), -EFAULT;
if (_data.u16(0) > 4)
return errh->error("unexpected OS/2 version number %d", _data.u16(0)), -ERANGE;
return 0;
}
}}
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