r13105@tres: ted | 2006-07-30 11:08:56 -0700

 Copying in libwpg as it seems they have no releases.

(bzr r1522)

1 files changed, 123 insertions, 0 deletions

diff --git a/src/extension/internal/libwpg/WPGHeader.cpp b/src/extension/internal/libwpg/WPGHeader.cpp
new file mode 100644
index 000000000..8daf35700
--- /dev/null
+++ b/src/extension/internal/libwpg/WPGHeader.cpp
@@ -0,0 +1,123 @@
+/* libwpg
+ * Copyright (C) 2006 Ariya Hidayat (ariya@kde.org)
+ * Copyright (C) 2004 Marc Oude Kotte (marc@solcon.nl)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the 
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 
+ * Boston, MA  02111-1301 USA
+ *
+ * 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 ptr[0]+(ptr[1]<<8);
+}
+
+static inline unsigned long readU32( const void* p )
+{
+	const unsigned char* ptr = (const unsigned char*) p;
+	return ptr[0]+(ptr[1]<<8)+(ptr[2]<<16)+(ptr[3]<<24);
+}
+}
+
+using namespace libwpg;
+
+WPGHeader::WPGHeader()
+{
+		// create a sensible default header
+		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;
+		m_majorVersion = 0x02;
+		m_minorVersion = 0x00;
+		m_encryptionKey = 0;
+		m_startOfPacketData = 0;
+		m_entryCount = 0;
+		m_resourceComplete = 0;
+		m_encryptionBlockOffset = 0;
+		m_fileSize = 0;
+		m_encryptVersion = 0;
+}
+
+bool WPGHeader::load(WPGInputStream *input)
+{
+	input->seek(0);
+	
+	unsigned char prefix[26];
+	long n = input->read(26, (char*)prefix);
+	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;
+}