private void ReadCvmRootDirs()
{
mRootDirectories = new List <CvmDirectoryInfo>();
// find start of dir lists
Console.WriteLine("Scanning for cvm directory lists in executable...");
int dirListStart = FindCvmRootDirsStart();
if (dirListStart == -1)
{
throw new InvalidDataException("No #DirLst# signature found in executable. Bad file.");
}
Console.WriteLine("Reading executable cvm directory lists...");
// Read header bytes
mExecutableHeader = new byte[dirListStart];
mExecutableStream.Position = 0;
mExecutableStream.Read(mExecutableHeader, 0, mExecutableHeader.Length);
// Read dir entries
mExecutableStream.Position = dirListStart;
using (var reader = new BinaryReader(mExecutableStream, Encoding.Default, true))
{
int rootDirectoryCount = 3;
if (mGame == Game.Persona4)
{
rootDirectoryCount = 4;
}
for (int i = 0; i < rootDirectoryCount; i++)
{
var directory = new CvmDirectoryInfo(null);
directory.Read(reader);
mRootDirectories.Add(directory);
}
}
// Read footer bytes
mExecutableFooter = new byte[mExecutableStream.Length - mExecutableStream.Position];
mExecutableStream.Read(mExecutableFooter, 0, mExecutableFooter.Length);
}
public void Read(BinaryReader reader)
{
#if DEBUG
long start = reader.BaseStream.Position;
#endif
// 0x00 - 0x02
int entryCount = reader.ReadInt32();
// 0x04 - 0x08
int entryCountAux = reader.ReadInt32();
Debug.Assert(entryCount == entryCountAux, "entryCount != entryCountAux");
// 0x08 - 0x0C
DirectoryLBA = reader.ReadInt32();
// 0x0C - 0x14
string tag = string.Empty;
for (int i = 0; i < 8; ++i)
{
var b = reader.ReadByte();
if (b != 0)
{
tag += ( char )b;
}
}
Debug.Assert(tag.Equals(TAG));
// 0x14 - 0x16
Debug.Assert(reader.ReadUInt16() == 0);
#if DEBUG
Debug.Assert((reader.BaseStream.Position - start) == 22);
#endif
// Read children
Entries.Capacity = entryCount;
for (int i = 0; i < entryCount; i++)
{
var entry = new CvmFileSystemEntry(this);
entry.Read(reader);
Entries.Add(entry);
}
reader.BaseStream.Position = (reader.BaseStream.Position + 15) & ~(15);
for (int i = 1; i < entryCount; i++)
{
var entry = Entries[i];
if (entry.Flags.HasFlag(CvmFileSystemEntryFlags.DirectoryRecord))
{
var directory = new CvmDirectoryInfo(entry);
directory.Read(reader);
entry.DirectoryInfo = directory;
}
}
}