SwfDotNet.IO.SwfReader.ReadTag C# (CSharp) Method

        internal static BaseTag ReadTag(byte version, BufferedBinaryReader binaryReader, BaseTagCollection tagList)
        {
            long posBefore = binaryReader.BaseStream.Position;
            RecordHeader rh = new RecordHeader();
            rh.ReadData(binaryReader);

            int offset = (int)(binaryReader.BaseStream.Position - posBefore);
            binaryReader.BaseStream.Position = posBefore;

            BaseTag resTag = null;

            switch (rh.TagCode)
            {
                case (int)TagCodeEnum.DefineBits: resTag = new DefineBitsTag(); break;
                case (int)TagCodeEnum.DefineBitsJpeg2: resTag = new DefineBitsJpeg2Tag(); break;
                case (int)TagCodeEnum.DefineBitsJpeg3: resTag = new DefineBitsJpeg3Tag(); break;
                case (int)TagCodeEnum.DefineBitsLossLess: resTag = new DefineBitsLossLessTag(); break;
                case (int)TagCodeEnum.DefineBitsLossLess2: resTag = new DefineBitsLossLess2Tag(); break;
                case (int)TagCodeEnum.DefineButton: resTag = new DefineButtonTag(); break;
                case (int)TagCodeEnum.DefineButton2: resTag = new DefineButton2Tag(); break;
                case (int)TagCodeEnum.DefineButtonCxForm: resTag = new DefineButtonCxFormTag(); break;
                case (int)TagCodeEnum.DefineButtonSound: resTag = new DefineButtonSoundTag(); break;
                case (int)TagCodeEnum.DefineEditText: resTag = new DefineEditTextTag(); break;
                case (int)TagCodeEnum.DefineFont: resTag = new DefineFontTag(); break;
                case (int)TagCodeEnum.DefineFont2: resTag = new DefineFont2Tag(); break;
                case (int)TagCodeEnum.DefineFontInfo: resTag = new DefineFontInfoTag(); break;
                case (int)TagCodeEnum.DefineFontInfo2: resTag = new DefineFontInfo2Tag(); break;
                case (int)TagCodeEnum.DefineMorphShape: resTag = new DefineMorphShapeTag(); break;
                case (int)TagCodeEnum.DefineShape: resTag = new DefineShapeTag(); break;
                case (int)TagCodeEnum.DefineShape2: resTag = new DefineShape2Tag(); break;
                case (int)TagCodeEnum.DefineShape3: resTag = new DefineShape3Tag(); break;
                case (int)TagCodeEnum.DefineSound: resTag = new DefineSoundTag(); break;
                case (int)TagCodeEnum.DefineSprite: resTag = new DefineSpriteTag(); break;
                case (int)TagCodeEnum.DefineText: resTag = new DefineTextTag(); break;
                case (int)TagCodeEnum.DefineText2: resTag = new DefineText2Tag(); break;
                case (int)TagCodeEnum.DefineVideoStream: resTag = new DefineVideoStreamTag(); break;
                case (int)TagCodeEnum.DoAction: resTag = new DoActionTag(); break;
                case (int)TagCodeEnum.EnableDebugger: resTag = new EnableDebuggerTag(); break;
                case (int)TagCodeEnum.EnableDebugger2: resTag = new EnableDebugger2Tag(); break;
                case (int)TagCodeEnum.End: resTag = new EndTag(); break;
                case (int)TagCodeEnum.ExportAssets: resTag = new ExportAssetsTag(); break;
                case (int)TagCodeEnum.FrameLabel: resTag = new FrameLabelTag(); break;
                case (int)TagCodeEnum.ImportAssets: resTag = new ImportAssetsTag(); break;
                case (int)TagCodeEnum.InitAction: resTag = new InitActionTag(); break;
                case (int)TagCodeEnum.JpegTable: resTag = new JpegTableTag(); break;
                case (int)TagCodeEnum.PlaceObject: resTag = new PlaceObjectTag(); break;
                case (int)TagCodeEnum.PlaceObject2:	resTag = new PlaceObject2Tag(); break;
                case (int)TagCodeEnum.Protect: resTag = new ProtectTag(); break;
                case (int)TagCodeEnum.RemoveObject: resTag = new RemoveObjectTag(); break;
                case (int)TagCodeEnum.RemoveObject2: resTag = new RemoveObject2Tag(); break;
                case (int)TagCodeEnum.ScriptLimit: resTag = new ScriptLimitTag(); break;
                case (int)TagCodeEnum.SetBackgroundColor: resTag = new SetBackgroundColorTag(); break;
                case (int)TagCodeEnum.SetTabIndex: resTag = new SetTabIndexTag(); break;
                case (int)TagCodeEnum.ShowFrame: resTag = new ShowFrameTag(); break;
                case (int)TagCodeEnum.SoundStreamBlock: resTag = new SoundStreamBlockTag(); break;
                case (int)TagCodeEnum.SoundStreamHead: resTag = new SoundStreamHeadTag(); break;
                case (int)TagCodeEnum.SoundStreamHead2: resTag = new SoundStreamHead2Tag(); break;
                case (int)TagCodeEnum.StartSound: resTag = new StartSoundTag(); break;
                case (int)TagCodeEnum.Metadata: resTag = new MetadataTag(); break;
                case (int)TagCodeEnum.SymbolClass: resTag = new SymbolClassTag(); break;
                //TODO: Sorenson Codec
                case (int)TagCodeEnum.VideoFrame: resTag = ReadVideoFrameTag(binaryReader, tagList); break;
                default: resTag = new BaseTag(binaryReader.ReadBytes(System.Convert.ToInt32(rh.TagLength + offset)), rh.TagCode); break;
            }

            //Read the data of the current tag
            resTag.ReadData(version, binaryReader);

            //LOG
            long mustRead = rh.TagLength + offset;
            if (posBefore + mustRead != binaryReader.BaseStream.Position)
            {
                binaryReader.BaseStream.Position = posBefore + rh.TagLength + offset;
                if (log.IsErrorEnabled)
                    log.Error(Enum.GetName(TagCodeEnum.DefineBits.GetType(), rh.TagCode) + "....KO");
            }
            else if (log.IsInfoEnabled)
                log.Info(Enum.GetName(TagCodeEnum.DefineBits.GetType(), rh.TagCode) + "....OK (" + mustRead + ")");

            return resTag;
        }

        /// <summary>
        /// Read swf (header and tags), this is the only
        /// public method of <see cref="SwfDotNet.IO.SwfReader">SwfReader</see>
        /// with <see cref="SwfDotNet.IO.SwfReader.Close">Close</see> and
        /// <see cref="SwfDotNet.IO.SwfReader.ReadSwfHeader">ReadSwfHeader</see> methods.
        /// The returned <see cref="SwfDotNet.IO.Swf">Swf</see> object contains swf headers informations and the
        /// tags list.
        /// </summary>
        public Swf ReadSwf()
        {
            // compressed swf?
            if (br.PeekChar() == 'C')
            {
                Inflate();
            }

            SwfHeader header = new SwfHeader();

            header.ReadData(br);
            this.version = header.Version;

            tagList = new BaseTagCollection();

            bool readEndTag = false; //necessary for the 1 more byte bug

            while (br.BaseStream.Position < br.BaseStream.Length && !readEndTag)
            {
                BaseTag b = SwfReader.ReadTag(this.version, this.br, this.tagList);
                if (b != null)
                {
                    if (b is EndTag)
                    {
                        readEndTag = true;
                    }
                    tagList.Add(b);
                }
            }
            ;

            br.Close();

            return(new Swf(header, tagList));
        }