private void UpdateEntries(DdtFileEntry parent, ref long runningOffset, ref int runningFileIndex)
{
var subEntryCount = -parent.SubEntryCountOrFileSize;
for (var i = 0; i < subEntryCount; i++)
{
var entry = parent.SubEntries[i];
if (entry.SubEntryCountOrFileSize >= 0)
{
entry.NextDirectoryOffsetOrFileOffset = (int)(runningOffset / Alignment);
runningOffset += (long)Files[runningFileIndex].FileSize;
if (runningOffset % Alignment > 0)
{
runningOffset += Alignment - runningOffset % Alignment;
}
runningFileIndex++;
}
}
for (var i = 0; i < subEntryCount; i++)
{
var entry = parent.SubEntries[i];
if (entry.SubEntryCountOrFileSize < 0)
{
UpdateEntries(entry, ref runningOffset, ref runningFileIndex);
}
}
}
public DDTIMG(Stream ddtInput, Stream imgInput)
{
_ddtStream = ddtInput;
_imgStream = imgInput;
using (var br = new BinaryReaderX(ddtInput, true))
{
Header = new DdtFileEntry
{
PathOffset = br.ReadUInt32(),
NextDirectoryOffsetOrFileOffset = br.ReadInt32(),
SubEntryCountOrFileSize = br.ReadInt32()
};
ReadEntries(Header, br, string.Empty);
}
}
private void WriteEntries(DdtFileEntry parent, BinaryWriterX bwDdt, BinaryWriterX bwImg, ref int runningFileIndex)
{
var subEntryCount = -parent.SubEntryCountOrFileSize;
for (var i = 0; i < subEntryCount; i++)
{
var entry = parent.SubEntries[i];
bwDdt.Write(entry.PathOffset);
bwDdt.Write(entry.NextDirectoryOffsetOrFileOffset);
bwDdt.Write(entry.SubEntryCountOrFileSize);
}
for (var i = 0; i < subEntryCount; i++)
{
// TODO: Adjust parent.SubEntries[i].PathOffset if we ever allow changes to the directory tree
//bw.BaseStream.Position = parent.SubEntries[i].PathOffset;
bwDdt.Write(Encoding.GetEncoding("EUC-JP").GetBytes(parent.SubEntries[i].Name));
bwDdt.Write((byte)0x0);
}
bwDdt.WriteAlignment(4);
for (var i = 0; i < subEntryCount; i++)
{
var entry = parent.SubEntries[i];
if (entry.SubEntryCountOrFileSize >= 0)
{
var fileInfo = Files[runningFileIndex];
fileInfo.FileData.CopyTo(bwImg.BaseStream);
bwImg.WriteAlignment((int)Alignment);
runningFileIndex++;
}
}
for (var i = 0; i < subEntryCount; i++)
{
var entry = parent.SubEntries[i];
if (entry.SubEntryCountOrFileSize < 0)
{
WriteEntries(entry, bwDdt, bwImg, ref runningFileIndex);
}
}
}
private void ReadEntries(DdtFileEntry parent, BinaryReaderX br, string directory)
{
var subEntryCount = -parent.SubEntryCountOrFileSize;
parent.SubEntries = new List <DdtFileEntry>();
br.BaseStream.Position = parent.NextDirectoryOffsetOrFileOffset;
for (var i = 0; i < subEntryCount; i++)
{
var entry = new DdtFileEntry
{
PathOffset = br.ReadUInt32(),
NextDirectoryOffsetOrFileOffset = br.ReadInt32(),
SubEntryCountOrFileSize = br.ReadInt32()
};
parent.SubEntries.Add(entry);
}
for (var i = 0; i < subEntryCount; i++)
{
br.BaseStream.Position = parent.SubEntries[i].PathOffset;
var c = br.ReadByte();
var name = new List <byte>();
while (c != 0x0)
{
name.Add(c);
c = br.ReadByte();
}
parent.SubEntries[i].Name = Encoding.GetEncoding("EUC-JP").GetString(name.ToArray());
}
for (var i = 0; i < subEntryCount; i++)
{
var entry = parent.SubEntries[i];
if (entry.SubEntryCountOrFileSize >= 0)
{
Files.Add(new DdtFileInfo
{
Entry = entry,
FileName = $"{directory}\\{entry.Name}".TrimStart('\\'),
FileData = new SubStream(_imgStream, entry.NextDirectoryOffsetOrFileOffset * Alignment, entry.SubEntryCountOrFileSize),
State = ArchiveFileState.Archived
});
}
}
for (var i = 0; i < subEntryCount; i++)
{
var nextDirectory = directory;
var entry = parent.SubEntries[i];
if (entry.SubEntryCountOrFileSize < 0)
{
nextDirectory += "\\" + entry.Name;
ReadEntries(entry, br, nextDirectory);
}
}
}
