public bool Remove(PagedContainerEntry entry)
{
if (!entries.ContainsKey(entry.Name))
{
return(false);
}
entries.Remove(entry.Name);
Modified = true;
return(true);
}
/// <summary> Read data from pages, starting with entry.FirstPage </summary>
internal static byte[] ReadEntryPageSequence(this Stream stm, PagedContainerHeader header, PagedContainerEntry entry)
{
using var stmCollector = new MemoryStream(entry.Length); // todo replace with byte[]
var remainLength = entry.Flags.HasFlag(EntryFlags.Compressed) ? entry.CompressedLength : entry.Length;
var currentPageIndex = entry.FirstPage;
var buff = new byte[header.PageSize];
while (currentPageIndex > 0)
{
stm.Position = currentPageIndex * header.PageSize;
stm.Read(buff, 0, header.PageSize);
var requestLength = remainLength > header.PageUserDataSize ? header.PageUserDataSize : remainLength;
stmCollector.Write(buff, 0, requestLength);
remainLength -= requestLength;
currentPageIndex = BitConverter.ToInt32(buff, header.PageUserDataSize);
}
return(header.DataHandler.Unpack(stmCollector.ToArray()).ToArray());
}
public void Update(PagedContainerEntry entry, int pageFirst, int pageLast, int rawLength, int compressedLength, EntryFlags flags)
{
entry.Update(pageFirst, pageLast, rawLength, compressedLength, flags);
Modified = true;
}
public void Add(PagedContainerEntry entry)
{
entries.Add(entry.Name, entry);
Modified = true;
}
internal EntryReadonlyStream(PagedContainerAbstract parent, PagedContainerEntry entry)
{
this.parent = parent;
this.entry = entry;
pages = parent.Stream.ReadPageSequence(parent.Header, entry.FirstPage);
}
