public static CurFile FromFileSystemEntry(FileSystemEntry entry)
{
using (var stream = entry.Open())
using (var reader = new BinaryReader(stream, Encoding.ASCII, true))
{
var content = IconChunkContent.Parse(reader, stream.Length);
return(new CurFile
{
Image = content.GetImage(0)
});
}
}
internal static RiffChunk Parse(BinaryReader reader)
{
var chunkType = reader.ReadFourCc();
var chunkSize = reader.ReadUInt32();
var endPosition = reader.BaseStream.Position + chunkSize;
// If this is the RIFF chunk, the chunk size includes the chunk type and chunk size values.
if (chunkType == "RIFF")
{
endPosition -= 8;
}
RiffChunkContent content;
switch (chunkType)
{
case "RIFF":
case "LIST":
content = RiffChunkList.Parse(reader, endPosition);
break;
case "INAM":
case "IART":
content = InfoChunkContent.Parse(reader);
break;
case "anih":
content = AniHeaderChunkContent.Parse(reader);
break;
case "rate":
content = RateChunkContent.Parse(reader, endPosition);
break;
case "seq ":
content = SequenceChunkContent.Parse(reader, endPosition);
break;
case "icon":
content = IconChunkContent.Parse(reader, endPosition);
break;
default:
throw new InvalidDataException($"Chunk type not supported: {chunkType}");
}
if (reader.BaseStream.Position != endPosition)
{
throw new InvalidDataException();
}
if (chunkSize % 2 != 0)
{
// Pad byte.
reader.ReadByte();
}
return(new RiffChunk
{
ChunkType = chunkType,
Size = chunkSize,
Content = content
});
}