plugins/org.eclipse.epp.sfx.native/extractor/Formatter.cpp

#include "System.h"
#include "Formatter.h"
Formatter::Formatter(File* file)
{
	_file = file;
}

Formatter::~Formatter(void)
{
}

SFXFooter* Formatter::ParseFooter()
{
	//navigate and read SFX Footer
	if ( false == _file->Seek(_file, - sizeof(SFXFooter), SEEK__END ))
		return 0;
	SFXFooter* footer = (SFXFooter*)System::SafeAllocMemory(sizeof(SFXFooter));
	
	UINT packageSize = _file->ReadUINT(_file);
	UINT crc32 = _file->ReadUINT(_file);

	footer->PackageSize = packageSize;
	footer->CRC32 = crc32;
	
	return footer;
}

SFXHeader* Formatter::ParseHeader(void)
{
	SFXHeader* header = (SFXHeader*)System::SafeAllocMemory(sizeof(SFXHeader));

	_file->Read(_file,header->Signature,19);
	BYTE version = 0;
	_file->Read(_file,&version,1);
	header->Version = version;
	header->numberOfFiles = _file->ReadUINT(_file);
	return header;
}

ExecutionInfo* Formatter::ParseExecutionInfo(void)
{
	ExecutionInfo* result = (ExecutionInfo*)System::SafeAllocMemory(sizeof(ExecutionInfo));
	result->Flags = _file->ReadUINT(_file);
	result->ExecutableStringId = _file->ReadUINT(_file);
	result->ArgsStringId = _file->ReadUINT(_file);

	return result;
}

FileInformation* Formatter::ParseFileInformationTable(UINT entriesCount)
{
	FileInformation* result = (FileInformation*)System::SafeAllocMemory(entriesCount * sizeof(FileInformation));

	for ( int i = 0; i < entriesCount; i ++)
	{
		UINT fileSize = _file->ReadUINT(_file);
		UINT fileName = _file->ReadUINT(_file);
		UINT* currStructPointer = (UINT*)(result + i);
		*currStructPointer = fileSize;
		*(currStructPointer + 1) = fileName;
	}

	return result;
}