/// <summary>
/// Extract the resource from the volume.
/// </summary>
/// <param name="container">Game container.</param>
/// <param name="fileName">Volume file name.</param>
/// <param name="dirEntry">Resource map entry for the resource to extract.</param>
/// <param name="wasCompressed">Resource was compressed in the volume, so it was decompressed.</param>
/// <returns>Binary data for the resource. This is always uncompressed. If the data is compressed in the volume, the volume decoder must decompress it.</returns>
byte[] IVolumeDecoder.ExtractResource(IGameContainer container, string fileName, VolumeResourceMapEntry dirEntry, out bool wasCompressed)
{
if (container == null)
{
throw new ArgumentNullException(nameof(container));
}
if (fileName == null)
{
throw new ArgumentNullException(nameof(fileName));
}
if (fileName.Length == 0)
{
throw new ArgumentException(Errors.FilePathEmpty, nameof(fileName));
}
if (dirEntry == null)
{
throw new ArgumentNullException(nameof(dirEntry));
}
byte[] volumeData = container.Read(fileName);
if (dirEntry.Offset >= volumeData.Length)
{
throw new VolumeDecoderInvalidResourceOffsetException();
}
return(VolumeDecoderV3.ExtractResource(volumeData, dirEntry.Offset, out wasCompressed));
}
/// <summary>
/// Load the resource map located in the specified folder.
/// </summary>
/// <param name="container">Game container where the resource map file(s) are located.</param>
/// <returns>Resource map.</returns>
VolumeResourceMap IVolumeDecoder.LoadResourceMap(IGameContainer container)
{
if (container == null)
{
throw new ArgumentNullException(nameof(container));
}
return(VolumeDecoderV3.ReadResourceMap(container.Read(this.GetResourceMapFile())));
}
