/// <summary>
/// Returns the file data, decompressed if needed
/// </summary>
/// <param name="item">The grf file</param>
/// <param name="decompress">Should the data decompressed?</param>
/// <returns></returns>
public byte[] GetFileData(FileItem item, bool decompress)
{
byte[] buf = null;
bool isUpdated = item.IsAdded || item.IsUpdated;
if (isUpdated)
{
// Load data from file
buf = File.ReadAllBytes(item.NewFilepath);
}
else if (item.FileData == null || item.FileData.Length != item.LengthCompressedAlign)
{
// Cache data
CacheFileData(item);
buf = item.FileData;
}
else
{
buf = item.FileData;
}
if (isUpdated == false && buf != null && buf.Length > 0)
{
// deocde, if needed
if (item.Cycle >= 0 && Deflate.IsMagicHead(buf) == false)
{
EncryptionHelper.DecryptFileData(buf, item.Cycle == 0, item.Cycle);
}
// Decompress data
if (decompress)
{
buf = Deflate.Decompress(buf);
}
}
return(buf);
}
