private void WriteFolderEntries(BinaryWriterEx bw, FolderEntry folder)
{
var allChilds = folder.GetEntryHierarchy().ToList();
var folderEntry = new LIFFFolderEntry()
{
EntryType = 1,
Filename = folder.IsRootDirectory ? null : folder.Name,
EntryCount = folder.Entries.Count,
Reserved1 = folder.IsRootDirectory ? 0 : 7,
BlockSize = 20
};
bw.WriteStruct(folderEntry);
foreach (var entry in folder.Entries.OrderBy(x => x.Name))
{
if (entry is FileEntry file)
{
var fileEntry = new LIFFFileEntry()
{
EntryType = 2,
Filename = file.Name,
FileSize = (int)file.FileSize + LIFFBLOCK_SIZE,
Reserved1 = 7,
Created = file.CreatedDate.ToFileTime(),
Modified = file.ModifiedDate.ToFileTime(),
Accessed = file.AccessedDate.ToFileTime()
};
bw.WriteStruct(fileEntry);
}
else
{
WriteFolderEntries(bw, (FolderEntry)entry);
}
}
}
private static void PopulateFolderFileHierarchy(BinaryReaderEx br, FolderEntry parentFolder, BlockHierarchy hierarchy, LIFFFolderEntry folderEntry)
{
if (hierarchy.ChildCount != folderEntry.EntryCount)
{
throw new IOException("The file is not a valid LIF. Entry count mismatch.");
}
for (int i = 0; i < folderEntry.EntryCount; i++)
{
var expectedBlock = hierarchy.Childs[i];
short entryType = br.ReadInt16();
br.BaseStream.Skip(-2);
LifEntry entry;
if (entryType == 1)
{
var folderInfo = br.ReadStruct <LIFFFolderEntry>();
entry = new FolderEntry(folderInfo.Filename);
PopulateFolderFileHierarchy(br, (FolderEntry)entry, expectedBlock, folderInfo);
}
else if (entryType == 2)
{
var fileInfo = br.ReadStruct <LIFFFileEntry>();
var dataStream = new StreamPortion(br.BaseStream, expectedBlock.PositionInStream + LIFFBLOCK_SIZE, fileInfo.FileSize - LIFFBLOCK_SIZE);
entry = new FileEntry(dataStream, fileInfo.Filename);
((FileEntry)entry).SetFileAttributes(
DateTime.FromFileTime(fileInfo.Created),
DateTime.FromFileTime(fileInfo.Modified),
DateTime.FromFileTime(fileInfo.Accessed));
}
else
{
throw new IOException("The file is not a valid LIF.");
}
parentFolder.Entries.Add(entry);
}
}
