private void extractFile(fst_t fst, UInt16 entry, string parent)
{
UInt16 fat;
int cluster_span = (int)(fst.size / 0x4000) + 1;
byte[] cluster = new byte[0x4000],
data = new byte[cluster_span * 0x4000];
string filename = Path.DirectorySeparatorChar + parent + Path.DirectorySeparatorChar +
ASCIIEncoding.ASCII.GetString(fst.filename).
Replace("\0", string.Empty).
Replace(":", "-");
fireDebug("Extract {0}", filename);
this.extractedSize += (int)fst.size;
fireProgress((int)((float)this.extractedSize * 100 / (float)this.loc_fst));
BinaryWriter bw = null;
try
{
bw = new BinaryWriter(File.Open(extractPath + filename,
FileMode.Create,
FileAccess.Write,
FileShare.Read),
Encoding.ASCII);
fat = fst.sub;
for (int i = 0; fat < 0xFFF0; i++)
{
Buffer.BlockCopy(getCluster(fat), 0, data, i * 0x4000, 0x4000);
fat = getFAT(fat);
}
bw.Write(data, 0, (int)fst.size);
}
catch (ThreadAbortException taex)
{
throw taex;
}
catch
{
fireError("Can't open file: {0}", extractPath + filename);
}
finally
{
if (bw != null)
{
bw.Close();
}
}
}
private void extractDir(fst_t fst, UInt16 entry, string parent)
{
string filename = ASCIIEncoding.ASCII.GetString(fst.filename).Replace("\0", string.Empty);
if (filename != "/")
{
if (parent != "/" && parent != "")
{
filename = parent + Path.DirectorySeparatorChar + filename;
}
Directory.CreateDirectory(extractPath + Path.DirectorySeparatorChar + filename);
}
if (fst.sub != 0xffff)
{
extractFST(fst.sub, filename);
}
}
private void extractFST(UInt16 entry, string parent)
{
fst_t fst = getFST(entry);
if (fst.sib != 0xffff)
{
extractFST(fst.sib, parent);
}
switch (fst.mode)
{
case 0:
extractDir(fst, entry, parent);
break;
case 1:
extractFile(fst, entry, parent);
break;
default:
break;
}
}
private fst_t getFST(UInt16 entry)
{
fst_t fst = new fst_t();
// compensate for 64 bytes of ecc data every 64 fst entries
Int32[] n_fst = { 0, 2, 2 };
int loc_entry = (((entry / 0x40) * n_fst[type]) + entry) * 0x20;
rom.BaseStream.Seek(loc_fst + loc_entry, SeekOrigin.Begin);
fst.filename = rom.ReadBytes(0x0C);
fst.mode = rom.ReadByte();
fst.attr = rom.ReadByte();
fst.sub = bswap(rom.ReadUInt16());
fst.sib = bswap(rom.ReadUInt16());
fst.size = bswap(rom.ReadUInt32());
fst.uid = bswap(rom.ReadUInt32());
fst.gid = bswap(rom.ReadUInt16());
fst.x3 = bswap(rom.ReadUInt32());
fst.mode &= 1;
return(fst);
}
private fst_t getFST(UInt16 entry)
{
fst_t fst = new fst_t();
// compensate for 64 bytes of ecc data every 64 fst entries
Int32[] n_fst = { 0, 2, 2 };
int loc_entry = (((entry / 0x40) * n_fst[type]) + entry) * 0x20;
rom.BaseStream.Seek(loc_fst + loc_entry, SeekOrigin.Begin);
fst.filename = rom.ReadBytes(0x0C);
fst.mode = rom.ReadByte();
fst.attr = rom.ReadByte();
fst.sub = bswap(rom.ReadUInt16());
fst.sib = bswap(rom.ReadUInt16());
fst.size = bswap(rom.ReadUInt32());
fst.uid = bswap(rom.ReadUInt32());
fst.gid = bswap(rom.ReadUInt16());
fst.x3 = bswap(rom.ReadUInt32());
fst.mode &= 1;
return fst;
}
private void extractFile(fst_t fst, UInt16 entry, string parent)
{
UInt16 fat;
int cluster_span = (int)(fst.size / 0x4000) + 1;
byte[] cluster = new byte[0x4000],
data = new byte[cluster_span * 0x4000];
string filename = Path.DirectorySeparatorChar + parent + Path.DirectorySeparatorChar +
ASCIIEncoding.ASCII.GetString(fst.filename).
Replace("\0", string.Empty).
Replace(":", "-");
fireDebug("Extract {0}", filename);
this.extractedSize += (int)fst.size;
fireProgress((int)((float)this.extractedSize * 100 / (float)this.loc_fst));
BinaryWriter bw = null;
try
{
bw = new BinaryWriter(File.Open(extractPath + filename,
FileMode.Create,
FileAccess.Write,
FileShare.Read),
Encoding.ASCII);
fat = fst.sub;
for (int i = 0; fat < 0xFFF0; i++)
{
Buffer.BlockCopy(getCluster(fat), 0, data, i * 0x4000, 0x4000);
fat = getFAT(fat);
}
bw.Write(data, 0, (int)fst.size);
}
catch (ThreadAbortException taex)
{
throw taex;
}
catch
{
fireError("Can't open file: {0}", extractPath + filename);
}
finally
{
if (bw != null)
bw.Close();
}
}
private void extractDir(fst_t fst, UInt16 entry, string parent)
{
string filename = ASCIIEncoding.ASCII.GetString(fst.filename).Replace("\0", string.Empty);
if (filename != "/")
{
if (parent != "/" && parent != "")
filename = parent + Path.DirectorySeparatorChar + filename;
Directory.CreateDirectory(extractPath + Path.DirectorySeparatorChar + filename);
}
if (fst.sub != 0xffff)
extractFST(fst.sub, filename);
}
