going to open source

Assets/FlashTools/Scripts/Editor/FTSwfTools/SwfDecoder.cs

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+using System.IO;
+using System.Collections.Generic;
+
+using FTSwfTools.SwfTags;
+using FTSwfTools.SwfTypes;
+
+namespace FTSwfTools {
+	public class SwfDecoder {
+		public SwfShortHeader   OriginalHeader;
+		public SwfLongHeader    UncompressedHeader;
+		public List<SwfTagBase> Tags = new List<SwfTagBase>();
+
+		public SwfDecoder(string swf_path) {
+			var raw_data            = File.ReadAllBytes(swf_path);
+			var uncompressed_stream = DecompressSwfData(raw_data);
+			DecodeSwf(new SwfStreamReader(uncompressed_stream));
+		}
+
+		MemoryStream DecompressSwfData(byte[] raw_swf_data) {
+			var raw_reader = new SwfStreamReader(raw_swf_data);
+			OriginalHeader = SwfShortHeader.Read(raw_reader);
+			switch ( OriginalHeader.Format ) {
+			case "FWS":
+				return new MemoryStream(raw_swf_data);
+			case "CWS":
+				var rest_stream = SwfStreamReader.DecompressZBytes(
+					raw_reader.ReadRest());
+				var new_short_header = new SwfShortHeader{
+					Format     = "FWS",
+					Version    = OriginalHeader.Version,
+					FileLength = OriginalHeader.FileLength};
+				var uncompressed_stream = new MemoryStream();
+				SwfShortHeader.Write(new_short_header, uncompressed_stream);
+				rest_stream.WriteTo(uncompressed_stream);
+				uncompressed_stream.Position = 0;
+				return uncompressed_stream;
+			default:
+				throw new System.Exception(string.Format(
+					"Unsupported swf format: {0}", OriginalHeader.Format));
+			}
+		}
+
+		void DecodeSwf(SwfStreamReader reader) {
+			UncompressedHeader = SwfLongHeader.Read(reader);
+			while ( !reader.IsEOF ) {
+				var tag = SwfTagBase.Read(reader);
+				if ( tag.TagType == SwfTagType.End ) {
+					break;
+				}
+				Tags.Add(tag);
+			}
+		}
+	}
+}