/// <summary>
/// Returns a stream of bytes of the specified entry in the archive.
/// </summary>
/// <param name="fileEntry">The file entry to read.</param>
/// <returns>
/// A <see cref="MemoryStream"/> containing the data of a file selected by <paramref name="fileEntry"/>.
/// </returns>
public Stream GetFile(RaidyFileEntry fileEntry)
{
MemoryStream stream = new MemoryStream();
reader.BaseStream.Position = fileEntry.offset;
byte[] buffer = new byte[81920];
for (int remaining = (int)fileEntry.length; remaining > 0;)
{
int read = reader.Read(buffer, 0, Math.Min(buffer.Length, remaining));
stream.Write(buffer, 0, read);
remaining -= read;
}
stream.Position = 0; // Reset the stream before returning it.
return(stream);
}
/// <summary>
/// Initializes a new instance of the <see cref="RaidyReader"/> class with the specified stream.
/// </summary>
/// <param name="source">The stream to read from.</param>
public RaidyReader(Stream source)
{
reader = new BinaryReader(source);
// Read the header.
header.magic = reader.ReadChars(8); // Should be SM2MPX10.
// TODO: Handle invalid files.
header.fileCount = reader.ReadUInt32();
header.dataOffset = reader.ReadUInt32();
header.fileName = reader.ReadChars(12); // Always 12 chars.
header.tocOffset = reader.ReadUInt32();
// Populate the FileEntries array.
FileEntries = new RaidyFileEntry[header.fileCount];
for (int i = 0; i < header.fileCount; i++)
{
FileEntries[i].fileName = reader.ReadChars(12); // Always 12 chars.
FileEntries[i].offset = reader.ReadUInt32();
FileEntries[i].length = reader.ReadUInt32();
}
}
