/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* libwpg
* Version: MPL 2.0 / LGPLv2.1+
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* Major Contributor(s):
* Copyright (C) 2006 Ariya Hidayat (ariya@kde.org)
* Copyright (C) 2004 Marc Oude Kotte (marc@solcon.nl)
*
* For minor contributions see the git repository.
*
* Alternatively, the contents of this file may be used under the terms
* of the GNU Lesser General Public License Version 2.1 or later
* (LGPLv2.1+), in which case the provisions of the LGPLv2.1+ are
* applicable instead of those above.
*
* For further information visit http://libwpg.sourceforge.net
*/
/* "This product is not manufactured, approved, or supported by
* Corel Corporation or Corel Corporation Limited."
*/
#include "WPGHeader.h"
#include "libwpg_utils.h"
namespace
{
static inline unsigned short readU16(const void *p)
{
const unsigned char *ptr = (const unsigned char *) p;
return (unsigned short)(ptr[0]+(ptr[1]<<8));
}
static inline unsigned long readU32(const void *p)
{
const unsigned char *ptr = (const unsigned char *) p;
return (unsigned long)(unsigned)(ptr[0]+(ptr[1]<<8)+(ptr[2]<<16)+(ptr[3]<<24));
}
}
WPGHeader::WPGHeader() :
m_identifier(),
m_startOfDocument(0L),
m_productType(0x01),
m_fileType(0x16),
m_majorVersion(0x02),
m_minorVersion(0x00),
m_encryptionKey(0x00),
m_startOfPacketData(0)
{
m_identifier[0] = 0xff;
m_identifier[1] = 'W';
m_identifier[2] = 'P';
m_identifier[3] = 'C';
}
bool WPGHeader::load(librevenge::RVNGInputStream *input)
{
// input->seek(0, librevenge::RVNG_SEEK_SET);
unsigned long n = 0;
unsigned char const *prefix = input->read(26, n);
if (n < 26)
return false;
m_identifier[0] = prefix[0];
m_identifier[1] = prefix[1];
m_identifier[2] = prefix[2];
m_identifier[3] = prefix[3];
m_startOfDocument = readU32(prefix+4);
m_productType = prefix[8];
m_fileType = prefix[9];
m_majorVersion = prefix[10];
m_minorVersion = prefix[11];
m_encryptionKey = readU16(prefix+12);
m_startOfPacketData = readU16(prefix+14);
WPG_DEBUG_MSG(("Header Identifier = %c%c%c\n", m_identifier[1],
m_identifier[2], m_identifier[3]));
WPG_DEBUG_MSG(("Product type = 0x%x\n", m_productType));
WPG_DEBUG_MSG(("File type = 0x%x\n", m_fileType));
WPG_DEBUG_MSG(("Major version = 0x%x\n", m_majorVersion));
WPG_DEBUG_MSG(("Minor version = 0x%x\n", m_minorVersion));
WPG_DEBUG_MSG(("Encryption key = 0x%x\n", m_encryptionKey));
return true;
}
bool WPGHeader::isSupported() const
{
return (
(m_identifier[0] == 0xFF) &&
(m_identifier[1] == 'W') &&
(m_identifier[2] == 'P') &&
(m_identifier[3] == 'C') &&
(m_productType == 0x01) &&
(m_fileType == 0x16) &&
(m_encryptionKey == 0x00) && // we don't support encryption
((m_majorVersion == 0x02) || (m_majorVersion == 0x01)) &&
(m_minorVersion == 0x00)
);
}
unsigned long WPGHeader::startOfDocument() const
{
return m_startOfDocument;
}
int WPGHeader::majorVersion() const
{
return m_majorVersion;
}
/* vim:set shiftwidth=4 softtabstop=4 noexpandtab: */