public void Open(System.IO.Stream s) {
if (s.ReadInt() != SIG) throw new IrosArcException("Signature mismatch");
Version = s.ReadInt();
Flags = (ArchiveFlags)s.ReadInt();
Directory = s.ReadInt();
if (Version < MIN_VERSION) throw new IrosArcException("Invalid header version " + Version.ToString());
if (Version > MAX_VERSION) throw new IrosArcException("Invalid header version " + Version.ToString());
}
public void Open(System.IO.Stream s, int version) {
long pos = s.Position;
ushort len = s.ReadUShort();
ushort flen = s.ReadUShort();
byte[] fn = new byte[flen];
s.Read(fn, 0, flen);
Filename = System.Text.Encoding.Unicode.GetString(fn);
Flags = (FileFlags)s.ReadInt();
if (version < 0x10001)
Offset = s.ReadInt();
else
Offset = s.ReadLong();
Length = s.ReadInt();
s.Position = pos + len;
}
public static DataFile LoadLGP(System.IO.Stream fs, string file)
{
DataFile df = new DataFile()
{
Filename = file
};
if (fs.ReadUShort() != 0)
{
throw new Exception(file + " - not a valid LGP archive");
}
byte[] header = new byte[10];
fs.Read(header, 0, 10);
if (!Encoding.ASCII.GetString(header).Equals("SQUARESOFT"))
{
throw new Exception(file + " - not a valid LGP archive");
}
int count = fs.ReadInt();
byte[] fname = new byte[20];
List <Tuple <string, uint, ushort, int> > files = new List <Tuple <string, uint, ushort, int> >();
for (int i = 0; i < count; i++)
{
fs.Read(fname, 0, 20);
uint offset = fs.ReadUInt();
fs.ReadByte();
ushort dupe = fs.ReadUShort();
string lgpFile = Encoding.ASCII.GetString(fname);
int nPos = lgpFile.IndexOf('\0');
if (nPos >= 0)
{
lgpFile = lgpFile.Substring(0, nPos);
}
files.Add(new Tuple <string, uint, ushort, int>(lgpFile, offset, dupe, i));
}
if (files.Any(t => t.Item3 != 0))
{
fs.Seek(3600, System.IO.SeekOrigin.Current); //skip lookup table
ushort entries = fs.ReadUShort();
byte[] pname = new byte[128];
foreach (int i in Enumerable.Range(0, entries))
{
foreach (int j in Enumerable.Range(0, fs.ReadUShort()))
{
fs.Read(pname, 0, 128);
ushort toc = fs.ReadUShort();
string ppname = Encoding.ASCII.GetString(pname);
ppname = ppname.Substring(0, ppname.IndexOf('\0'));
files[toc] = new Tuple <string, uint, ushort, int>(
ppname.Replace("/", "\\") + "\\" + files[toc].Item1,
files[toc].Item2,
files[toc].Item3,
files[toc].Item4
);
}
}
}
df.Items = files.Select(t => new DataItem()
{
Name = t.Item1, Start = t.Item2, Index = t.Item4
}).ToList();
foreach (var item in df.Items)
{
fs.Position = item.Start + 20;
item.Length = fs.ReadInt() + 24;
//item.Start = item.Start;
}
df.Freeze();
return(df);
}
// Loads an LGP archive into a stream
public static DataFile LoadLGP(System.IO.Stream fs, string file)
{
DataFile df = new DataFile()
{
Filename = file
};
// Checks that LGP starts with 00 then that SQUARESOFT is stated
if (fs.ReadUShort() != 0)
{
throw new Exception(file + " - not a valid LGP archive");
}
byte[] header = new byte[10];
fs.Read(header, 0, 10);
if (!Encoding.ASCII.GetString(header).Equals("SQUARESOFT"))
{
throw new Exception(file + " - not a valid LGP archive");
}
// Takes the field name (20 bytes)
// The offset it points to (4 byte integer)
// Check code (1 byte)
// Appended if file name is duplicate (2 byte short)
int count = fs.ReadInt();
byte[] fname = new byte[20];
List <Tuple <string, uint, ushort, int> > files = new List <Tuple <string, uint, ushort, int> >();
for (int i = 0; i < count; i++)
{
fs.Read(fname, 0, 20); // Field Name
uint offset = fs.ReadUInt(); // Offset
fs.ReadByte(); // Check Code
ushort dupe = fs.ReadUShort(); // Dupe Name ID
string lgpFile = Encoding.ASCII.GetString(fname);
int nPos = lgpFile.IndexOf('\0');
if (nPos >= 0)
{
lgpFile = lgpFile.Substring(0, nPos);
}
files.Add(new Tuple <string, uint, ushort, int>(lgpFile, offset, dupe, i));
}
if (files.Any(t => t.Item3 != 0))
{
// Skip lookup table
fs.Seek(3600, System.IO.SeekOrigin.Current);
ushort entries = fs.ReadUShort();
byte[] pname = new byte[128];
foreach (int i in Enumerable.Range(0, entries))
{
foreach (int j in Enumerable.Range(0, fs.ReadUShort()))
{
fs.Read(pname, 0, 128);
ushort toc = fs.ReadUShort();
string ppname = Encoding.ASCII.GetString(pname);
ppname = ppname.Substring(0, ppname.IndexOf('\0'));
files[toc] = new Tuple <string, uint, ushort, int>(
ppname.Replace("/", "\\") + "\\" + files[toc].Item1,
files[toc].Item2,
files[toc].Item3,
files[toc].Item4
);
}
}
}
// Derives start position and length for each field file
df.Items = files.Select(t => new DataItem()
{
Name = t.Item1, Start = t.Item2, Index = t.Item4
}).ToList();
foreach (var item in df.Items)
{
fs.Position = item.Start + 20; // Skips the name of the file on the field
item.Length = fs.ReadInt() + 24; // Takes the file length header on the field
}
df.Freeze();
return(df);
}