解压缩压缩和读取flash头文件信息

1、解压缩，压缩和读取flash头文件信息swf文件在flash6以后多了压缩的选项，使用zlib压缩，有人写的zlib的链接库(下面是我写的解压缩，压缩和读取flash头文件信息的代码:压缩:openFileDialog1.Filter = JPG Files|*.swf;openFileDialog1.Title = Select a Swf File;if(openFileDialog1.ShowDialog() = DialogResult.OK)string fileName = Path.GetFullPath(openFileDialog1.FileName); FileStream

2、 fs1 = new FileStream(fileName， FileMode.Open， FileAccess.Read); BinaryReader r = new BinaryReader(fs1); byte writedata = r.ReadBytes(int)(fs1.Length - 1); ManagedZLib.ManagedZLib.Initialize();string tempfile = aaa.swf; FileStream fs = new FileStream(tempfile， FileMode.OpenOrCreate); byte writefiled

3、ata = new byte8; writefiledata0 = Convert.ToByte(C); for(int i=1;i8;i+) writefiledatai = writedatai; fs.Write(writefiledata，0，8); ManagedZLib.CompressionStream zlibStream = new ManagedZLib.CompressionStream(fs， ManagedZLib.CompressionOptions.CompressBest); BinaryWriter zlibWriter = new BinaryWriter(

4、zlibStream); zlibWriter.Write(writedata，8，writedata.Length - 8); zlibWriter.Close(); zlibStream.Close(); r.Close(); fs1.Close(); 解压缩: 程序代码FileStream stream color=#0000ff= new FileStream(filename， FileMode.Open， FileAccess.Read， FileShare.ReadWrite);BinaryReader reader = new BinaryReader(stream);try

5、byte dataPart = new bytestream.Length-8; string mark = new string(reader.ReadChars(3); if(mark = FWS) MessageBox.Show(已经是解压缩过的文件); return; int version = Convert.ToInt32(reader.ReadByte(); int fileLength = reader.ReadInt32(); reader.Read(dataPart， 0， dataPart.Length); byte savedata = new bytefileLeng

6、th; savedata0 = Convert.ToByte(F); savedata1 = Convert.ToByte(W); savedata2 = Convert.ToByte(S); savedata3 = version; savedata4 = Convert.ToByte(fileLength%256); savedata5 = Convert.ToByte(fileLength/256%256); savedata6 = Convert.ToByte(fileLength/256/256%256); savedata7 = Convert.ToByte(fileLength/

7、256/256/256%256); MemoryStream dataStream = new MemoryStream(dataPart); try ManagedZLib.ManagedZLib.Initialize(); ManagedZLib.CompressionStream zlibStream = new ManagedZLib.CompressionStream(dataStream， ManagedZLib.CompressionOptions.Decompress); BinaryReader zlibReader = new BinaryReader(zlibStream

8、); try byte decompressedPart = new bytefileLength - 8; zlibReader.Read(decompressedPart， 0， decompressedPart.Length); for(int i=8;ifileLength;i+) savedatai = decompressedParti-8; string FILE_NAME = Path.Combine(AppDomain.CurrentDomain.BaseDirectory，filename); FileStream fss = new FileStream(FILE_NAME， FileMode.OpenOrCreate); BinaryWriter ww = new BinaryWriter(fss); ww.Write(savedata); ww.Close(); fss.Close(); finally zlibReader.Close(); zlibStream.Close(); ManagedZLib.ManagedZLib.Terminate(); finally dataStream.Close(); finally reader