private void readOldArkHeader(IFile hdrFile, Stream header)
{
root = new ArkDirectory(null, ROOT_DIR);
contentFileMeta = hdrFile.GetStream();
header.Position = 8;
long fileTableOffset = header.ReadUInt32LE();
uint numFiles = header.ReadUInt32LE();
long dirTableOffset = header.ReadUInt32LE();
string[] dirs = new string[header.ReadUInt32LE()];
header.Position = 0x24;
long blockSize = header.ReadUInt32LE();
header.Position = dirTableOffset;
for (int dir = 0; dir < dirs.Length; dir++)
{
header.Position = dirTableOffset + (8 * dir) + 4;
header.Position = header.ReadUInt32LE();
dirs[dir] = header.ReadASCIINullTerminated();
}
for (int file = 0; file < numFiles; file++)
{
header.Position = fileTableOffset + (24 * file) + 4;
long filenameOffset = header.ReadUInt32LE();
int dir = header.ReadUInt16LE();
uint blockOffset = header.ReadUInt16LE();
uint block = header.ReadUInt32LE();
uint compressedSize = header.ReadUInt32LE();
header.Position = filenameOffset;
string filename = header.ReadASCIINullTerminated();
ArkDirectory parent = dir > 0 ? makeOrGetDir(dirs[dir]) : root;
parent.AddFile(new OffsetFile(filename, parent, contentFileMeta, block * blockSize + blockOffset,
compressedSize));
}
}
/// <summary>
/// Read the filename table, which is a blob of strings,
/// then read the filename pointer table which links files to filenames
/// </summary>
private void readFileTable(Stream header, uint version, bool brokenv4)
{
string[] fileNames = readFileNames(header, version != 1);
if (version > 2)
{
// Version 3+:
// Go to end of the filename pointer table which we already read
// filename blob filename pointer table
header.Seek(fileNameTableOffset + fileNameTableSize + 4 + 4 * numFileNames, SeekOrigin.Begin);
}
else
{
// Version 2: still at beginning of file. (after version number ofc)
header.Seek(4, SeekOrigin.Begin);
}
// Now the number of *actual* files in the archive.
// Directories are not explicitly stored. Rather, they are inferred
// by the path string each file has, which tells you in which folder
// the file lives.
uint numFiles = header.ReadUInt32LE();
for (var i = 0; i < numFiles; i++)
{
// Version 3 uses 32-bit file offsets
long arkFileOffset = 0;
if (version != 1)
{
arkFileOffset = (brokenv4 || version <= 3 ? header.ReadUInt32LE() : header.ReadInt64LE());
}
int filenameStringId = header.ReadInt32LE();
int dirStringId = header.ReadInt32LE();
if (version == 1)
{
arkFileOffset = header.ReadUInt32LE();
}
uint size = header.ReadUInt32LE();
uint zero = header.ReadUInt32LE();
// Version 7 uses this differently. now, files marked as 0 should be skipped,
// while NON-zero values mean real files. I think.
if ((version == 7 && zero != 0) || (version != 7 && zero == 0))
{
ArkDirectory parent = dirStringId > 0 ? makeOrGetDir(fileNames[dirStringId]) : root;
parent.AddFile(new OffsetFile(fileNames[filenameStringId], parent, contentFileMeta, arkFileOffset, size));
}
}
}
