public PreviewForm(ArchiveFile file)
{
InitializeComponent();
dataText.Text = Encoding.ASCII.GetString(file.Data);
this.file = file;
this.Text = file.Name;
}
private void ReadArchive()
{
memoryStream.Seek(0, SeekOrigin.Begin);
/* Header:
* 4 - magic number ('DWFB')
* 4 - version
* 64 - padding??
* 4 - file count
* 4 - file list offset
* 4 - file list length
* 4 - null
*/
var magicNumber = memoryStream.ReadString(4);
if (magicNumber != "DWFB")
{
throw new NotDWFBException($"Magic number did not match: {magicNumber}");
}
version = memoryStream.ReadInt32();
memoryStream.Seek(64, SeekOrigin.Current); // Skip padding
var fileCount = memoryStream.ReadInt32();
var fileDirectoryOffset = memoryStream.ReadInt32();
var fileDirectoryLength = memoryStream.ReadInt32();
memoryStream.Seek(4, SeekOrigin.Current); // Skip 'null'
uint lowestUnk = uint.MaxValue;
// Details directory
// See DWFBFile for more info
for (int i = 0; i < fileCount; ++i)
{
GC.Collect();
// Save the current position so that we can go back to it later
var initialPos = memoryStream.Position;
ArchiveFile newFile = new ArchiveFile();
var unknown = memoryStream.ReadUInt32();
if (unknown < lowestUnk)
{
lowestUnk = unknown;
}
var filenameOffset = memoryStream.ReadUInt32();
var filenameLength = memoryStream.ReadUInt32();
var dataOffset = memoryStream.ReadUInt32();
var dataLength = memoryStream.ReadUInt32();
newFile.IsCompressed = memoryStream.ReadUInt32() == 4;
newFile.DecompressedSize = memoryStream.ReadUInt32();
// Set file's name
memoryStream.Seek(filenameOffset, SeekOrigin.Begin);
newFile.Name = memoryStream.ReadString((int)filenameLength).Replace("\0", "");
// Get file's raw data
memoryStream.Seek(dataOffset, SeekOrigin.Begin);
newFile.Data = memoryStream.ReadBytes((int)dataLength);
newFile.ArchiveOffset = (int)dataOffset;
newFile.ParentArchive = this;
newFile.Unknown = unknown;
files.Add(newFile);
memoryStream.Seek(initialPos + 40, SeekOrigin.Begin); // Return to initial position, skip to the next file's data
}
MessageBox.Show($"Lowest unknown: {lowestUnk}");
}
private void ReadArchive()
{
memoryStream.Seek(0, SeekOrigin.Begin);
/* Header:
* 4 - magic number ('FKNL')
* 4 - flags
* 4 - data offset
* if flags & 2
* 4 - size
* 4 - zsize
* 4 - files
* 4 - dummy
* 4 - dummy
* 4 - filename dictionary offset
* 4 - ??
* 4 - ??
* 4 - ??
*/
/* Details directory
* for each file:
* 4 - filename size?
* 4 - filename offset
* 4 - file offset (relative to file data start)
* 4 - file length
*/
var magicNumber = memoryStream.ReadString(4);
if (magicNumber != "FKNL")
{
throw new NotDWFBException($"Magic number did not match: {magicNumber}");
}
version = memoryStream.ReadInt32();
var firstFileOffset = memoryStream.ReadInt32();
var fileDirectoryOffset = memoryStream.ReadInt32();
var fileDirectoryLength = memoryStream.ReadInt32();
memoryStream.Seek(4, SeekOrigin.Current); // Skip 'null'
// Details directory
// See DWFBFile for more info
for (int i = 0; i < 1; ++i)
{
GC.Collect();
// Save the current position so that we can go back to it later
var initialPos = memoryStream.Position;
ArchiveFile newFile = new ArchiveFile();
var filenameLength = memoryStream.ReadUInt32();
var filenameOffset = memoryStream.ReadUInt32();
var dataOffset = memoryStream.ReadUInt32();
var dataLength = memoryStream.ReadUInt32();
newFile.IsCompressed = memoryStream.ReadUInt32() == 4;
newFile.DecompressedSize = memoryStream.ReadUInt32();
// Set file's name
memoryStream.Seek(filenameOffset, SeekOrigin.Begin);
newFile.Name = memoryStream.ReadString((int)filenameLength);
// Get file's raw data
memoryStream.Seek(dataOffset, SeekOrigin.Begin);
newFile.Data = memoryStream.ReadBytes((int)dataLength);
newFile.ArchiveOffset = (int)dataOffset;
newFile.ParentArchive = this;
files.Add(newFile);
memoryStream.Seek(initialPos + 40, SeekOrigin.Begin); // Return to initial position, skip to the next file's data
}
}