internal STFSFile(string name, uint size, int startBlock, int numBlocks, STFSDirectory parent, STFSPackage container)
{
Name = name;
Parent = parent;
Size = size;
this.dataBlocks = null;
this.startBlock = startBlock;
this.numBlocks = numBlocks;
this.container = container;
}
internal STFSFile(string name, uint size, int[] dataBlocks, STFSDirectory parent, STFSPackage container)
{
Name = name;
Parent = parent;
Size = size;
this.dataBlocks = dataBlocks;
numBlocks = dataBlocks.Length;
if (numBlocks > 0)
{
startBlock = dataBlocks[0];
}
this.container = container;
ExtendedInfo = new Dictionary <string, object>();
}
private STFSPackage(IFile f)
{
Stream input = f.GetStream();
FileName = f.Name;
disposed = false;
stream = input;
// Set the type of STFS file.
string magic = stream.ReadASCIINullTerminated(4);
switch (magic)
{
case "CON ":
Type = STFSType.CON;
break;
case "LIVE":
Type = STFSType.LIVE;
break;
case "PIRS":
Type = STFSType.PIRS;
break;
default:
throw new InvalidDataException("STFS is not CON, LIVE, or PIRS");
}
BlockCache = new byte[0x1000];
// Set up STFS info.
stream.Position = 0x340;
headerSize = stream.ReadInt32BE();
if ((((headerSize + 0xFFF) & 0xF000) >> 0xC) == 0xB)
{
tableSizeShift = 0;
}
else
{
tableSizeShift = 1;
}
// Volume Descriptor begins at 0x379
stream.Position = 0x37C;
fileTableBlockCount = stream.ReadInt16LE();
fileTableBlockNumber = stream.ReadInt24LE();
stream.Position = 0x39D;
fileCount = stream.ReadInt32LE();
#if !MINIMAL
// Read both package thumbnails into Image instances
stream.Position = 0x1712;
int thumbnailImgSize = stream.ReadInt32BE();
int titleThumbnailImgSize = stream.ReadInt32BE();
stream.Position = 0x171A;
if (thumbnailImgSize > 0)
{
Thumbnail = System.Drawing.Image.FromStream(new System.IO.MemoryStream(stream.ReadBytes(thumbnailImgSize)));
}
stream.Position = 0x571A;
if (titleThumbnailImgSize > 0)
{
TitleThumbnail = System.Drawing.Image.FromStream(new System.IO.MemoryStream(stream.ReadBytes(titleThumbnailImgSize)));
}
#endif
root = new STFSDirectory(null, ROOT_DIR);
var dirsOrdinal = new Dictionary <int, STFSDirectory>();
dirsOrdinal.Add(-1, root);
int items = 0;
int[] fileTableBlocks = GetFileBlocks(fileTableBlockNumber, fileTableBlockCount, false);
for (var x = 0; x < fileTableBlocks.Length; x++)
{
var curBlock = fileTableBlocks[x];
long basePosition;
CacheBlockAt(BlockToOffset(curBlock));
using (var curBlockStream = new System.IO.MemoryStream(BlockCache))
{
for (var i = 0; i < 0x40; i++)
{
basePosition = 0x40 * i;
curBlockStream.Position = basePosition;
if (curBlockStream.ReadByte() == 0)
{
break;
}
curBlockStream.Position = basePosition + 0x28;
byte flags = (byte)curBlockStream.ReadByte();
curBlockStream.Position = basePosition;
String name;
using (var sr = new System.IO.StreamReader(
new System.IO.MemoryStream(curBlockStream.ReadBytes(flags & 0x3f)), Encoding.GetEncoding(1252)))
{
name = sr.ReadToEnd();
}
curBlockStream.Position = basePosition + 0x29;
int numBlocks = curBlockStream.ReadInt24LE();
curBlockStream.ReadInt24LE();
int startBlock = curBlockStream.ReadInt24LE();
int parentDir = curBlockStream.ReadInt16BE();
uint size = curBlockStream.ReadUInt32BE();
int update = curBlockStream.ReadInt32BE();
int access = curBlockStream.ReadInt32BE();
STFSDirectory parent;
if (!dirsOrdinal.TryGetValue(parentDir, out parent)) // get the parent if it exists
{
throw new InvalidDataException("File references non-existent directory.");
}
if ((flags & 0x80) == 0x80)
{
// item is a directory
var tmp = new STFSDirectory(parent, name);
dirsOrdinal.Add(items, tmp);
parent.AddDir(tmp);
}
else
{
// item is a file
STFSFile tmp;
if ((flags & 0x40) == 0x40) // blocks are sequential
{
var dataBlocks = GetFileBlocks(startBlock, numBlocks, (flags & 0x40) == 0x40);
tmp = new STFSFile(name, size, dataBlocks, parent, this);
}
else // offload block calculation until we need it
{
tmp = new STFSFile(name, size, startBlock, numBlocks, parent, this);
}
parent.AddFile(tmp);
}
items++;
}
}
}
}
