public ZipOutputStream(Stream baseOutputStream) : base(baseOutputStream, new Deflater(Deflater.DEFAULT_COMPRESSION, true)) { this.entries = new ArrayList(); this.crc = new Crc32(); this.curEntry = null; this.offset = 0; this.zipComment = new byte[0]; this.defaultMethod = 8; this.shouldWriteBack = false; this.seekPos = -1; }
public GZipOutputStream(Stream baseOutputStream, int size) : base(baseOutputStream, new Deflater(Deflater.DEFAULT_COMPRESSION, true), size) { this.crc = new Crc32(); int num = (int) (DateTime.Now.Ticks / 0x2710); byte[] buffer2 = new byte[10]; buffer2[0] = (byte) (GZipConstants.GZIP_MAGIC >> 8); buffer2[1] = (byte) GZipConstants.GZIP_MAGIC; buffer2[2] = (byte) Deflater.DEFLATED; buffer2[4] = (byte) num; buffer2[5] = (byte) (num >> 8); buffer2[6] = (byte) (num >> 0x10); buffer2[7] = (byte) (num >> 0x18); buffer2[9] = 0xff; byte[] buffer = buffer2; baseOutputStream.Write(buffer, 0, buffer.Length); }
public override void Close() { base.Close(); this.crc = null; this.entry = null; }
public ZipInputStream(Stream baseInputStream) : base(baseInputStream, new Inflater(true)) { this.crc = new Crc32(); this.entry = null; }
private void ReadHeader() { Crc32 crc = new Crc32(); int bval = base.baseInputStream.ReadByte(); if (bval < 0) { this.eos = true; } else { crc.Update(bval); if (bval != (GZipConstants.GZIP_MAGIC >> 8)) { throw new IOException("Error baseInputStream GZIP header, first byte doesn't match"); } bval = base.baseInputStream.ReadByte(); if (bval != (GZipConstants.GZIP_MAGIC & 0xff)) { throw new IOException("Error baseInputStream GZIP header, second byte doesn't match"); } crc.Update(bval); int num2 = base.baseInputStream.ReadByte(); if (num2 != 8) { throw new IOException("Error baseInputStream GZIP header, data not baseInputStream deflate format"); } crc.Update(num2); int num3 = base.baseInputStream.ReadByte(); if (num3 < 0) { throw new Exception("Early EOF baseInputStream GZIP header"); } crc.Update(num3); if ((num3 & 0xd0) != 0) { throw new IOException("Reserved flag bits baseInputStream GZIP header != 0"); } for (int i = 0; i < 6; i++) { int num5 = base.baseInputStream.ReadByte(); if (num5 < 0) { throw new Exception("Early EOF baseInputStream GZIP header"); } crc.Update(num5); } if ((num3 & 4) != 0) { for (int j = 0; j < 2; j++) { int num7 = base.baseInputStream.ReadByte(); if (num7 < 0) { throw new Exception("Early EOF baseInputStream GZIP header"); } crc.Update(num7); } if ((base.baseInputStream.ReadByte() < 0) || (base.baseInputStream.ReadByte() < 0)) { throw new Exception("Early EOF baseInputStream GZIP header"); } int num8 = base.baseInputStream.ReadByte(); int num9 = base.baseInputStream.ReadByte(); if ((num8 < 0) || (num9 < 0)) { throw new Exception("Early EOF baseInputStream GZIP header"); } crc.Update(num8); crc.Update(num9); int num10 = (num8 << 8) | num9; for (int k = 0; k < num10; k++) { int num12 = base.baseInputStream.ReadByte(); if (num12 < 0) { throw new Exception("Early EOF baseInputStream GZIP header"); } crc.Update(num12); } } if ((num3 & 8) != 0) { int num13; while ((num13 = base.baseInputStream.ReadByte()) > 0) { crc.Update(num13); } if (num13 < 0) { throw new Exception("Early EOF baseInputStream GZIP file name"); } crc.Update(num13); } if ((num3 & 0x10) != 0) { int num14; while ((num14 = base.baseInputStream.ReadByte()) > 0) { crc.Update(num14); } if (num14 < 0) { throw new Exception("Early EOF baseInputStream GZIP comment"); } crc.Update(num14); } if ((num3 & 2) != 0) { int num16 = base.baseInputStream.ReadByte(); if (num16 < 0) { throw new Exception("Early EOF baseInputStream GZIP header"); } int num15 = base.baseInputStream.ReadByte(); if (num15 < 0) { throw new Exception("Early EOF baseInputStream GZIP header"); } num16 = (num16 << 8) | num15; if (num16 != (((int) crc.Value) & 0xffff)) { throw new IOException("Header CRC value mismatch"); } } this.readGZIPHeader = true; } }
public GZipInputStream(Stream baseInputStream, int size) : base(baseInputStream, new Inflater(true), size) { this.crc = new Crc32(); }