/// <summary>
/// Updates the tracker and returns the namespace enum that should be
/// used for the entry.
/// </summary>
/// <param name="entry">The entry to evaluate.</param>
/// <returns>The namespace to use for it.</returns>
public ResourceNamespace Update(WadDirectoryEntry entry)
{
if (EntryToNamespace.TryGetValue(entry.Name, out ResourceNamespace resourceNamespace))
{
Current = resourceNamespace;
return(ResourceNamespace.Global);
}
return(Current);
}
private static List <WadEntry> ReadEntriesOrThrow(byte[] wadData)
{
ByteReader reader = ByteReader.From(ByteOrder.Little, wadData);
// The header must exist fully or else we can't read it.
if (!reader.HasRemaining(12))
{
throw new Exception("Cannot read Wad");
}
WadResourceNamespaceTracker namespaceTracker = new WadResourceNamespaceTracker();
List <WadEntry> entries = new List <WadEntry>();
WadHeader header = ReadHeader(reader);
reader.Offset = header.DirectoryTableOffset;
for (int i = 0; i < header.EntryCount; i++)
{
WadDirectoryEntry dirEntry = ReadWadEntry(reader);
ResourceNamespace resourceNamespace = namespaceTracker.Update(dirEntry);
byte[] data = reader.Bytes(dirEntry.Size, dirEntry.Offset);
// Unfortunately binary readers can silently fail and just
// consume the remaining data. We want to let the caller
// know the wad is in fact corrupt if it can't read enough.
if (data.Length != dirEntry.Size)
{
throw new Exception("Malformed wad entry length");
}
WadEntry entry = new WadEntry(dirEntry.Name, resourceNamespace, data);
entries.Add(entry);
}
return(entries);
}
