ForceZip64() 공개 메소드

Force this entry to be recorded using Zip64 extensions.
public ForceZip64 ( ) : void
리턴 void
예제 #1
0
        /// <summary>
        /// Starts a new Zip entry. It automatically closes the previous
        /// entry if present.
        /// All entry elements bar name are optional, but must be correct if present.
        /// If the compression method is stored and the output is not patchable
        /// the compression for that entry is automatically changed to deflate level 0
        /// </summary>
        /// <param name="entry">
        /// the entry.
        /// </param>
        /// <exception cref="System.ArgumentNullException">
        /// if entry passed is null.
        /// </exception>
        /// <exception cref="System.IO.IOException">
        /// if an I/O error occured.
        /// </exception>
        /// <exception cref="System.InvalidOperationException">
        /// if stream was finished
        /// </exception>
        /// <exception cref="ZipException">
        /// Too many entries in the Zip file<br/>
        /// Entry name is too long<br/>
        /// Finish has already been called<br/>
        /// </exception>
        public void PutNextEntry(ZipEntry entry)
        {
            if (entry == null)
            {
                throw new ArgumentNullException("entry");
            }

            if (entries == null)
            {
                throw new InvalidOperationException("ZipOutputStream was finished");
            }

            if (curEntry != null)
            {
                CloseEntry();
            }

            if (entries.Count == int.MaxValue)
            {
                throw new ZipException("Too many entries for Zip file");
            }

            CompressionMethod method = entry.CompressionMethod;
            int compressionLevel = defaultCompressionLevel;

            // Clear flags that the library manages internally
            entry.Flags &= (int) GeneralBitFlags.UnicodeText;
            patchEntryHeader = false;

            bool headerInfoAvailable;

            // No need to compress - definitely no data.
            if (entry.Size == 0)
            {
                entry.CompressedSize = entry.Size;
                entry.Crc = 0;
                method = CompressionMethod.Stored;
                headerInfoAvailable = true;
            }
            else
            {
                headerInfoAvailable = (entry.Size >= 0) && entry.HasCrc;

                // Switch to deflation if storing isnt possible.
                if (method == CompressionMethod.Stored)
                {
                    if (!headerInfoAvailable)
                    {
                        if (!CanPatchEntries)
                        {
                            // Can't patch entries so storing is not possible.
                            method = CompressionMethod.Deflated;
                            compressionLevel = 0;
                        }
                    }
                    else // entry.size must be > 0
                    {
                        entry.CompressedSize = entry.Size;
                        headerInfoAvailable = entry.HasCrc;
                    }
                }
            }

            if (headerInfoAvailable == false)
            {
                if (CanPatchEntries == false)
                {
                    // Only way to record size and compressed size is to append a data descriptor
                    // after compressed data.

                    // Stored entries of this form have already been converted to deflating.
                    entry.Flags |= 8;
                }
                else
                {
                    patchEntryHeader = true;
                }
            }

            if (Password != null)
            {
                entry.IsCrypted = true;
                if (entry.Crc < 0)
                {
                    // Need to append a data descriptor as the crc isnt available for use
                    // with encryption, the date is used instead.  Setting the flag
                    // indicates this to the decompressor.
                    entry.Flags |= 8;
                }
            }

            entry.Offset = offset;
            entry.CompressionMethod = method;

            curMethod = method;
            sizePatchPos = -1;

            if ((useZip64_ == UseZip64.On) || ((entry.Size < 0) && (useZip64_ == UseZip64.Dynamic)))
            {
                entry.ForceZip64();
            }

            // Write the local file header
            WriteLeInt(ZipConstants.LocalHeaderSignature);

            WriteLeShort(entry.Version);
            WriteLeShort(entry.Flags);
            WriteLeShort((byte) entry.CompressionMethodForHeader);
            WriteLeInt((int) entry.DosTime);

            // TODO: Refactor header writing.  Its done in several places.
            if (headerInfoAvailable)
            {
                WriteLeInt((int) entry.Crc);
                if (entry.LocalHeaderRequiresZip64)
                {
                    WriteLeInt(-1);
                    WriteLeInt(-1);
                }
                else
                {
                    WriteLeInt(entry.IsCrypted
                                   ? (int) entry.CompressedSize + ZipConstants.CryptoHeaderSize
                                   : (int) entry.CompressedSize);
                    WriteLeInt((int) entry.Size);
                }
            }
            else
            {
                if (patchEntryHeader)
                {
                    crcPatchPos = baseOutputStream_.Position;
                }
                WriteLeInt(0); // Crc

                if (patchEntryHeader)
                {
                    sizePatchPos = baseOutputStream_.Position;
                }

                // For local header both sizes appear in Zip64 Extended Information
                if (entry.LocalHeaderRequiresZip64 || patchEntryHeader)
                {
                    WriteLeInt(-1);
                    WriteLeInt(-1);
                }
                else
                {
                    WriteLeInt(0); // Compressed size
                    WriteLeInt(0); // Uncompressed size
                }
            }

            byte[] name = ZipConstants.ConvertToArray(entry.Flags, entry.Name);

            if (name.Length > 0xFFFF)
            {
                throw new ZipException("Entry name too long.");
            }

            var ed = new ZipExtraData(entry.ExtraData);

            if (entry.LocalHeaderRequiresZip64)
            {
                ed.StartNewEntry();
                if (headerInfoAvailable)
                {
                    ed.AddLeLong(entry.Size);
                    ed.AddLeLong(entry.CompressedSize);
                }
                else
                {
                    ed.AddLeLong(-1);
                    ed.AddLeLong(-1);
                }
                ed.AddNewEntry(1);

                if (!ed.Find(1))
                {
                    throw new ZipException("Internal error cant find extra data");
                }

                if (patchEntryHeader)
                {
                    sizePatchPos = ed.CurrentReadIndex;
                }
            }
            else
            {
                ed.Delete(1);
            }

#if !NET_1_1 && !NETCF_2_0
            if (entry.AESKeySize > 0)
            {
                AddExtraDataAES(entry, ed);
            }
#endif
            byte[] extra = ed.GetEntryData();

            WriteLeShort(name.Length);
            WriteLeShort(extra.Length);

            if (name.Length > 0)
            {
                baseOutputStream_.Write(name, 0, name.Length);
            }

            if (entry.LocalHeaderRequiresZip64 && patchEntryHeader)
            {
                sizePatchPos += baseOutputStream_.Position;
            }

            if (extra.Length > 0)
            {
                baseOutputStream_.Write(extra, 0, extra.Length);
            }

            offset += ZipConstants.LocalHeaderBaseSize + name.Length + extra.Length;
            // Fix offsetOfCentraldir for AES
            if (entry.AESKeySize > 0)
                offset += entry.AESOverheadSize;

            // Activate the entry.
            curEntry = entry;
            crc.Reset();
            if (method == CompressionMethod.Deflated)
            {
                deflater_.Reset();
                deflater_.SetLevel(compressionLevel);
            }
            size = 0;

            if (entry.IsCrypted)
            {
#if !NET_1_1 && !NETCF_2_0
                if (entry.AESKeySize > 0)
                {
                    WriteAESHeader(entry);
                }
                else
#endif
                {
                    if (entry.Crc < 0)
                    {
                        // so testing Zip will says its ok
                        WriteEncryptionHeader(entry.DosTime << 16);
                    }
                    else
                    {
                        WriteEncryptionHeader(entry.Crc);
                    }
                }
            }
        }
예제 #2
0
        /// <summary>
        /// Starts a new Zip entry. It automatically closes the previous
        /// entry if present.
        /// All entry elements bar name are optional, but must be correct if present.
        /// If the compression method is stored and the output is not patchable
        /// the compression for that entry is automatically changed to deflate level 0
        /// </summary>
        /// <param name="entry">
        /// the entry.
        /// </param>
        /// <exception cref="System.ArgumentNullException">
        /// if entry passed is null.
        /// </exception>
        /// <exception cref="System.IO.IOException">
        /// if an I/O error occured.
        /// </exception>
        /// <exception cref="System.InvalidOperationException">
        /// if stream was finished
        /// </exception>
        /// <exception cref="ZipException">
        /// Too many entries in the Zip file<br/>
        /// Entry name is too long<br/>
        /// Finish has already been called<br/>
        /// </exception>
        public void PutNextEntry(ZipEntry entry)
        {
            if (entry == null)
            {
                throw new ArgumentNullException("entry");
            }

            if (entries == null)
            {
                throw new InvalidOperationException("ZipOutputStream was finished");
            }

            if (curEntry != null)
            {
                CloseEntry();
            }

            if (entries.Count == int.MaxValue)
            {
                throw new ZipException("Too many entries for Zip file");
            }

            CompressionMethod method = entry.CompressionMethod;
            int compressionLevel     = defaultCompressionLevel;

            // Clear flags that the library manages internally
            entry.Flags     &= (int)GeneralBitFlags.UnicodeText;
            patchEntryHeader = false;

            bool headerInfoAvailable;

            // No need to compress - definitely no data.
            if (entry.Size == 0)
            {
                entry.CompressedSize = entry.Size;
                entry.Crc            = 0;
                method = CompressionMethod.Stored;
                headerInfoAvailable = true;
            }
            else
            {
                headerInfoAvailable = (entry.Size >= 0) && entry.HasCrc;

                // Switch to deflation if storing isnt possible.
                if (method == CompressionMethod.Stored)
                {
                    if (!headerInfoAvailable)
                    {
                        if (!CanPatchEntries)
                        {
                            // Can't patch entries so storing is not possible.
                            method           = CompressionMethod.Deflated;
                            compressionLevel = 0;
                        }
                    }
                    else                     // entry.size must be > 0
                    {
                        entry.CompressedSize = entry.Size;
                        headerInfoAvailable  = entry.HasCrc;
                    }
                }
            }

            if (headerInfoAvailable == false)
            {
                if (CanPatchEntries == false)
                {
                    // Only way to record size and compressed size is to append a data descriptor
                    // after compressed data.

                    // Stored entries of this form have already been converted to deflating.
                    entry.Flags |= 8;
                }
                else
                {
                    patchEntryHeader = true;
                }
            }

            if (Password != null)
            {
                entry.IsCrypted = true;
                if (entry.Crc < 0)
                {
                    // Need to append a data descriptor as the crc isnt available for use
                    // with encryption, the date is used instead.  Setting the flag
                    // indicates this to the decompressor.
                    entry.Flags |= 8;
                }
            }

            entry.Offset            = offset;
            entry.CompressionMethod = method;

            curMethod    = method;
            sizePatchPos = -1;

            if ((useZip64_ == UseZip64.On) || ((entry.Size < 0) && (useZip64_ == UseZip64.Dynamic)))
            {
                entry.ForceZip64();
            }

            // Write the local file header
            WriteLeInt(ZipConstants.LocalHeaderSignature);

            WriteLeShort(entry.Version);
            WriteLeShort(entry.Flags);
            WriteLeShort((byte)entry.CompressionMethodForHeader);
            WriteLeInt((int)entry.DosTime);

            // TODO: Refactor header writing.  Its done in several places.
            if (headerInfoAvailable)
            {
                WriteLeInt((int)entry.Crc);
                if (entry.LocalHeaderRequiresZip64)
                {
                    WriteLeInt(-1);
                    WriteLeInt(-1);
                }
                else
                {
                    WriteLeInt(entry.IsCrypted
                                                                   ? (int)entry.CompressedSize + ZipConstants.CryptoHeaderSize
                                                                   : (int)entry.CompressedSize);
                    WriteLeInt((int)entry.Size);
                }
            }
            else
            {
                if (patchEntryHeader)
                {
                    crcPatchPos = baseOutputStream_.Position;
                }
                WriteLeInt(0);                 // Crc

                if (patchEntryHeader)
                {
                    sizePatchPos = baseOutputStream_.Position;
                }

                // For local header both sizes appear in Zip64 Extended Information
                if (entry.LocalHeaderRequiresZip64 || patchEntryHeader)
                {
                    WriteLeInt(-1);
                    WriteLeInt(-1);
                }
                else
                {
                    WriteLeInt(0);                     // Compressed size
                    WriteLeInt(0);                     // Uncompressed size
                }
            }

            byte[] name = ZipConstants.ConvertToArray(entry.Flags, entry.Name);

            if (name.Length > 0xFFFF)
            {
                throw new ZipException("Entry name too long.");
            }

            var ed = new ZipExtraData(entry.ExtraData);

            if (entry.LocalHeaderRequiresZip64)
            {
                ed.StartNewEntry();
                if (headerInfoAvailable)
                {
                    ed.AddLeLong(entry.Size);
                    ed.AddLeLong(entry.CompressedSize);
                }
                else
                {
                    ed.AddLeLong(-1);
                    ed.AddLeLong(-1);
                }
                ed.AddNewEntry(1);

                if (!ed.Find(1))
                {
                    throw new ZipException("Internal error cant find extra data");
                }

                if (patchEntryHeader)
                {
                    sizePatchPos = ed.CurrentReadIndex;
                }
            }
            else
            {
                ed.Delete(1);
            }

#if !NET_1_1 && !NETCF_2_0
            if (entry.AESKeySize > 0)
            {
                AddExtraDataAES(entry, ed);
            }
#endif
            byte[] extra = ed.GetEntryData();

            WriteLeShort(name.Length);
            WriteLeShort(extra.Length);

            if (name.Length > 0)
            {
                baseOutputStream_.Write(name, 0, name.Length);
            }

            if (entry.LocalHeaderRequiresZip64 && patchEntryHeader)
            {
                sizePatchPos += baseOutputStream_.Position;
            }

            if (extra.Length > 0)
            {
                baseOutputStream_.Write(extra, 0, extra.Length);
            }

            offset += ZipConstants.LocalHeaderBaseSize + name.Length + extra.Length;
            // Fix offsetOfCentraldir for AES
            if (entry.AESKeySize > 0)
            {
                offset += entry.AESOverheadSize;
            }

            // Activate the entry.
            curEntry = entry;
            crc.Reset();
            if (method == CompressionMethod.Deflated)
            {
                deflater_.Reset();
                deflater_.SetLevel(compressionLevel);
            }
            size = 0;

            if (entry.IsCrypted)
            {
#if !NET_1_1 && !NETCF_2_0
                if (entry.AESKeySize > 0)
                {
                    WriteAESHeader(entry);
                }
                else
#endif
                {
                    if (entry.Crc < 0)
                    {
                        // so testing Zip will says its ok
                        WriteEncryptionHeader(entry.DosTime << 16);
                    }
                    else
                    {
                        WriteEncryptionHeader(entry.Crc);
                    }
                }
            }
        }
예제 #3
0
        public void EntryWithNoDataAndZip64()
        {
            MemoryStream msw = new MemoryStreamWithoutSeek();
            ZipOutputStream outStream = new ZipOutputStream(msw);

            outStream.IsStreamOwner = false;
            ZipEntry ze = new ZipEntry("Striped Marlin");
            ze.ForceZip64();
            ze.Size = 0;
            outStream.PutNextEntry(ze);
            outStream.CloseEntry();
            outStream.Finish();
            outStream.Close();

            Assert.IsTrue(ZipTesting.TestArchive(msw.ToArray()));
        }
예제 #4
0
        internal void PutNextEntry(Stream stream, ZipEntry entry, long streamOffset = 0)
        {
            if (entry == null)
            {
                throw new ArgumentNullException(nameof(entry));
            }

            if (entries == null)
            {
                throw new InvalidOperationException("ZipOutputStream was finished");
            }

            if (entries.Count == int.MaxValue)
            {
                throw new ZipException("Too many entries for Zip file");
            }

            CompressionMethod method = entry.CompressionMethod;

            // Check that the compression is one that we support
            if (method != CompressionMethod.Deflated && method != CompressionMethod.Stored)
            {
                throw new NotImplementedException("Compression method not supported");
            }

            // A password must have been set in order to add AES encrypted entries
            if (entry.AESKeySize > 0 && string.IsNullOrEmpty(this.Password))
            {
                throw new InvalidOperationException("The Password property must be set before AES encrypted entries can be added");
            }

            int compressionLevel = defaultCompressionLevel;

            // Clear flags that the library manages internally
            entry.Flags     &= (int)GeneralBitFlags.UnicodeText;
            patchEntryHeader = false;

            bool headerInfoAvailable;

            // No need to compress - definitely no data.
            if (entry.Size == 0)
            {
                entry.CompressedSize = entry.Size;
                entry.Crc            = 0;
                method = CompressionMethod.Stored;
                headerInfoAvailable = true;
            }
            else
            {
                headerInfoAvailable = (entry.Size >= 0) && entry.HasCrc && entry.CompressedSize >= 0;

                // Switch to deflation if storing isnt possible.
                if (method == CompressionMethod.Stored)
                {
                    if (!headerInfoAvailable)
                    {
                        if (!CanPatchEntries)
                        {
                            // Can't patch entries so storing is not possible.
                            method           = CompressionMethod.Deflated;
                            compressionLevel = 0;
                        }
                    }
                    else                     // entry.size must be > 0
                    {
                        entry.CompressedSize = entry.Size;
                        headerInfoAvailable  = entry.HasCrc;
                    }
                }
            }

            if (headerInfoAvailable == false)
            {
                if (CanPatchEntries == false)
                {
                    // Only way to record size and compressed size is to append a data descriptor
                    // after compressed data.

                    // Stored entries of this form have already been converted to deflating.
                    entry.Flags |= 8;
                }
                else
                {
                    patchEntryHeader = true;
                }
            }

            if (Password != null)
            {
                entry.IsCrypted = true;
                if (entry.Crc < 0)
                {
                    // Need to append a data descriptor as the crc isnt available for use
                    // with encryption, the date is used instead.  Setting the flag
                    // indicates this to the decompressor.
                    entry.Flags |= 8;
                }
            }

            entry.Offset            = offset;
            entry.CompressionMethod = (CompressionMethod)method;

            curMethod = method;

            if ((useZip64_ == UseZip64.On) || ((entry.Size < 0) && (useZip64_ == UseZip64.Dynamic)))
            {
                entry.ForceZip64();
            }

            // Apply any required transforms to the entry name
            TransformEntryName(entry);

            // Write the local file header
            offset += ZipFormat.WriteLocalHeader(stream, entry, out var entryPatchData,
                                                 headerInfoAvailable, patchEntryHeader, streamOffset, _stringCodec);

            patchData = entryPatchData;

            // Fix offsetOfCentraldir for AES
            if (entry.AESKeySize > 0)
            {
                offset += entry.AESOverheadSize;
            }

            // Activate the entry.
            curEntry = entry;
            crc.Reset();
            if (method == CompressionMethod.Deflated)
            {
                deflater_.Reset();
                deflater_.SetLevel(compressionLevel);
            }
            size = 0;
        }
예제 #5
0
        public void PutNextEntry(ZipEntry entry)
        {
            bool hasCrc;

            if (entry == null)
            {
                throw new ArgumentNullException("entry");
            }
            if (this.entries == null)
            {
                throw new InvalidOperationException("ZipOutputStream was finished");
            }
            if (this.curEntry != null)
            {
                this.CloseEntry();
            }
            if (this.entries.Count == 0x7fffffff)
            {
                throw new ZipException("Too many entries for Zip file");
            }
            CompressionMethod compressionMethod = entry.CompressionMethod;
            int defaultCompressionLevel         = this.defaultCompressionLevel;

            entry.Flags          &= 0x800;
            this.patchEntryHeader = false;
            if (entry.Size == 0)
            {
                entry.CompressedSize = entry.Size;
                entry.Crc            = 0L;
                compressionMethod    = CompressionMethod.Stored;
                hasCrc = true;
            }
            else
            {
                hasCrc = ((entry.Size >= 0L) && entry.HasCrc) && (entry.CompressedSize >= 0L);
                if (compressionMethod == CompressionMethod.Stored)
                {
                    if (hasCrc)
                    {
                        entry.CompressedSize = entry.Size;
                        hasCrc = entry.HasCrc;
                    }
                    else if (!base.CanPatchEntries)
                    {
                        compressionMethod       = CompressionMethod.Deflated;
                        defaultCompressionLevel = 0;
                    }
                }
            }
            if (!hasCrc)
            {
                if (!base.CanPatchEntries)
                {
                    entry.Flags |= 8;
                }
                else
                {
                    this.patchEntryHeader = true;
                }
            }
            if (base.Password != null)
            {
                entry.IsCrypted = true;
                if (entry.Crc < 0L)
                {
                    entry.Flags |= 8;
                }
            }
            entry.Offset            = this.offset;
            entry.CompressionMethod = compressionMethod;
            this.curMethod          = compressionMethod;
            this.sizePatchPos       = -1L;
            if ((this.useZip64_ == ICSharpCode.SharpZipLib.Zip.UseZip64.On) || ((entry.Size < 0L) && (this.useZip64_ == ICSharpCode.SharpZipLib.Zip.UseZip64.Dynamic)))
            {
                entry.ForceZip64();
            }
            this.WriteLeInt(0x4034b50);
            this.WriteLeShort(entry.Version);
            this.WriteLeShort(entry.Flags);
            this.WriteLeShort((byte)entry.CompressionMethodForHeader);
            this.WriteLeInt((int)entry.DosTime);
            if (hasCrc)
            {
                this.WriteLeInt((int)entry.Crc);
                if (entry.LocalHeaderRequiresZip64)
                {
                    this.WriteLeInt(-1);
                    this.WriteLeInt(-1);
                }
                else
                {
                    this.WriteLeInt(entry.IsCrypted ? (((int)entry.CompressedSize) + 12) : ((int)entry.CompressedSize));
                    this.WriteLeInt((int)entry.Size);
                }
            }
            else
            {
                if (this.patchEntryHeader)
                {
                    this.crcPatchPos = base.baseOutputStream_.Position;
                }
                this.WriteLeInt(0);
                if (this.patchEntryHeader)
                {
                    this.sizePatchPos = base.baseOutputStream_.Position;
                }
                if (!entry.LocalHeaderRequiresZip64 && !this.patchEntryHeader)
                {
                    this.WriteLeInt(0);
                    this.WriteLeInt(0);
                }
                else
                {
                    this.WriteLeInt(-1);
                    this.WriteLeInt(-1);
                }
            }
            byte[] buffer = ZipConstants.ConvertToArray(entry.Flags, entry.Name);
            if (buffer.Length > 0xffff)
            {
                throw new ZipException("Entry name too long.");
            }
            ZipExtraData extraData = new ZipExtraData(entry.ExtraData);

            if (!entry.LocalHeaderRequiresZip64)
            {
                extraData.Delete(1);
            }
            else
            {
                extraData.StartNewEntry();
                if (hasCrc)
                {
                    extraData.AddLeLong(entry.Size);
                    extraData.AddLeLong(entry.CompressedSize);
                }
                else
                {
                    extraData.AddLeLong(-1L);
                    extraData.AddLeLong(-1L);
                }
                extraData.AddNewEntry(1);
                if (!extraData.Find(1))
                {
                    throw new ZipException("Internal error cant find extra data");
                }
                if (this.patchEntryHeader)
                {
                    this.sizePatchPos = extraData.CurrentReadIndex;
                }
            }
            if (entry.AESKeySize > 0)
            {
                AddExtraDataAES(entry, extraData);
            }
            byte[] entryData = extraData.GetEntryData();
            this.WriteLeShort(buffer.Length);
            this.WriteLeShort(entryData.Length);
            if (buffer.Length != 0)
            {
                base.baseOutputStream_.Write(buffer, 0, buffer.Length);
            }
            if (entry.LocalHeaderRequiresZip64 && this.patchEntryHeader)
            {
                this.sizePatchPos += base.baseOutputStream_.Position;
            }
            if (entryData.Length != 0)
            {
                base.baseOutputStream_.Write(entryData, 0, entryData.Length);
            }
            this.offset += (30 + buffer.Length) + entryData.Length;
            if (entry.AESKeySize > 0)
            {
                this.offset += entry.AESOverheadSize;
            }
            this.curEntry = entry;
            this.crc.Reset();
            if (compressionMethod == CompressionMethod.Deflated)
            {
                base.deflater_.Reset();
                base.deflater_.SetLevel(defaultCompressionLevel);
            }
            this.size = 0L;
            if (entry.IsCrypted)
            {
                if (entry.AESKeySize > 0)
                {
                    this.WriteAESHeader(entry);
                }
                else if (entry.Crc < 0L)
                {
                    this.WriteEncryptionHeader(entry.DosTime << 0x10);
                }
                else
                {
                    this.WriteEncryptionHeader(entry.Crc);
                }
            }
        }
예제 #6
0
        public void PutNextEntry(ZipEntry entry)
        {
            if (entry == null)
            {
                throw new ArgumentNullException("entry");
            }
            if (this.entries == null)
            {
                throw new InvalidOperationException("ZipOutputStream was finished");
            }
            if (this.curEntry != null)
            {
                this.CloseEntry();
            }
            if (this.entries.Count == 2147483647)
            {
                throw new ZipException("Too many entries for Zip file");
            }
            CompressionMethod compressionMethod = entry.CompressionMethod;
            int level = this.defaultCompressionLevel;

            entry.Flags          &= 2048;
            this.patchEntryHeader = false;
            bool flag;

            if (entry.Size == 0L)
            {
                entry.CompressedSize = entry.Size;
                entry.Crc            = 0L;
                compressionMethod    = CompressionMethod.Stored;
                flag = true;
            }
            else
            {
                flag = (entry.Size >= 0L && entry.HasCrc);
                if (compressionMethod == CompressionMethod.Stored)
                {
                    if (!flag)
                    {
                        if (!base.CanPatchEntries)
                        {
                            compressionMethod = CompressionMethod.Deflated;
                            level             = 0;
                        }
                    }
                    else
                    {
                        entry.CompressedSize = entry.Size;
                        flag = entry.HasCrc;
                    }
                }
            }
            if (!flag)
            {
                if (!base.CanPatchEntries)
                {
                    entry.Flags |= 8;
                }
                else
                {
                    this.patchEntryHeader = true;
                }
            }
            if (base.Password != null)
            {
                entry.IsCrypted = true;
                if (entry.Crc < 0L)
                {
                    entry.Flags |= 8;
                }
            }
            entry.Offset            = this.offset;
            entry.CompressionMethod = compressionMethod;
            this.curMethod          = compressionMethod;
            this.sizePatchPos       = -1L;
            if (this.useZip64_ == UseZip64.On || (entry.Size < 0L && this.useZip64_ == UseZip64.Dynamic))
            {
                entry.ForceZip64();
            }
            this.WriteLeInt(67324752);
            this.WriteLeShort(entry.Version);
            this.WriteLeShort(entry.Flags);
            this.WriteLeShort((int)((byte)compressionMethod));
            this.WriteLeInt((int)entry.DosTime);
            if (flag)
            {
                this.WriteLeInt((int)entry.Crc);
                if (entry.LocalHeaderRequiresZip64)
                {
                    this.WriteLeInt(-1);
                    this.WriteLeInt(-1);
                }
                else
                {
                    this.WriteLeInt(entry.IsCrypted ? ((int)entry.CompressedSize + 12) : ((int)entry.CompressedSize));
                    this.WriteLeInt((int)entry.Size);
                }
            }
            else
            {
                if (this.patchEntryHeader)
                {
                    this.crcPatchPos = this.baseOutputStream_.Position;
                }
                this.WriteLeInt(0);
                if (this.patchEntryHeader)
                {
                    this.sizePatchPos = this.baseOutputStream_.Position;
                }
                if (entry.LocalHeaderRequiresZip64 || this.patchEntryHeader)
                {
                    this.WriteLeInt(-1);
                    this.WriteLeInt(-1);
                }
                else
                {
                    this.WriteLeInt(0);
                    this.WriteLeInt(0);
                }
            }
            byte[] array = ZipConstants.ConvertToArray(entry.Flags, entry.Name);
            if (array.Length > 65535)
            {
                throw new ZipException("Entry name too long.");
            }
            ZipExtraData zipExtraData = new ZipExtraData(entry.ExtraData);

            if (entry.LocalHeaderRequiresZip64)
            {
                zipExtraData.StartNewEntry();
                if (flag)
                {
                    zipExtraData.AddLeLong(entry.Size);
                    zipExtraData.AddLeLong(entry.CompressedSize);
                }
                else
                {
                    zipExtraData.AddLeLong(-1L);
                    zipExtraData.AddLeLong(-1L);
                }
                zipExtraData.AddNewEntry(1);
                if (!zipExtraData.Find(1))
                {
                    throw new ZipException("Internal error cant find extra data");
                }
                if (this.patchEntryHeader)
                {
                    this.sizePatchPos = (long)zipExtraData.CurrentReadIndex;
                }
            }
            else
            {
                zipExtraData.Delete(1);
            }
            byte[] entryData = zipExtraData.GetEntryData();
            this.WriteLeShort(array.Length);
            this.WriteLeShort(entryData.Length);
            if (array.Length > 0)
            {
                this.baseOutputStream_.Write(array, 0, array.Length);
            }
            if (entry.LocalHeaderRequiresZip64 && this.patchEntryHeader)
            {
                this.sizePatchPos += this.baseOutputStream_.Position;
            }
            if (entryData.Length > 0)
            {
                this.baseOutputStream_.Write(entryData, 0, entryData.Length);
            }
            this.offset  += (long)(30 + array.Length + entryData.Length);
            this.curEntry = entry;
            this.crc.Reset();
            if (compressionMethod == CompressionMethod.Deflated)
            {
                this.deflater_.Reset();
                this.deflater_.SetLevel(level);
            }
            this.size = 0L;
            if (entry.IsCrypted)
            {
                if (entry.Crc < 0L)
                {
                    this.WriteEncryptionHeader(entry.DosTime << 16);
                    return;
                }
                this.WriteEncryptionHeader(entry.Crc);
            }
        }
예제 #7
0
        public void PutNextEntry(ZipEntry entry)
        {
            //IL_0008: Unknown result type (might be due to invalid IL or missing references)
            //IL_001b: Unknown result type (might be due to invalid IL or missing references)
            if (entry == null)
            {
                throw new ArgumentNullException("entry");
            }
            if (entries == null)
            {
                throw new InvalidOperationException("ZipOutputStream was finished");
            }
            if (curEntry != null)
            {
                CloseEntry();
            }
            if (entries.get_Count() == 2147483647)
            {
                throw new ZipException("Too many entries for Zip file");
            }
            CompressionMethod compressionMethod = entry.CompressionMethod;
            int level = defaultCompressionLevel;

            entry.Flags     &= 2048;
            patchEntryHeader = false;
            bool flag;

            if (entry.Size == 0)
            {
                entry.CompressedSize = entry.Size;
                entry.Crc            = 0L;
                compressionMethod    = CompressionMethod.Stored;
                flag = true;
            }
            else
            {
                flag = entry.Size >= 0 && entry.HasCrc;
                if (compressionMethod == CompressionMethod.Stored)
                {
                    if (!flag)
                    {
                        if (!base.CanPatchEntries)
                        {
                            compressionMethod = CompressionMethod.Deflated;
                            level             = 0;
                        }
                    }
                    else
                    {
                        entry.CompressedSize = entry.Size;
                        flag = entry.HasCrc;
                    }
                }
            }
            if (!flag)
            {
                if (!base.CanPatchEntries)
                {
                    entry.Flags |= 8;
                }
                else
                {
                    patchEntryHeader = true;
                }
            }
            if (base.Password != null)
            {
                entry.IsCrypted = true;
                if (entry.Crc < 0)
                {
                    entry.Flags |= 8;
                }
            }
            entry.Offset            = offset;
            entry.CompressionMethod = compressionMethod;
            curMethod    = compressionMethod;
            sizePatchPos = -1L;
            if (useZip64_ == UseZip64.On || (entry.Size < 0 && useZip64_ == UseZip64.Dynamic))
            {
                entry.ForceZip64();
            }
            WriteLeInt(67324752);
            WriteLeShort(entry.Version);
            WriteLeShort(entry.Flags);
            WriteLeShort((byte)entry.CompressionMethodForHeader);
            WriteLeInt((int)entry.DosTime);
            if (flag)
            {
                WriteLeInt((int)entry.Crc);
                if (entry.LocalHeaderRequiresZip64)
                {
                    WriteLeInt(-1);
                    WriteLeInt(-1);
                }
                else
                {
                    WriteLeInt((int)(entry.IsCrypted ? ((int)entry.CompressedSize + 12) : entry.CompressedSize));
                    WriteLeInt((int)entry.Size);
                }
            }
            else
            {
                if (patchEntryHeader)
                {
                    crcPatchPos = baseOutputStream_.get_Position();
                }
                WriteLeInt(0);
                if (patchEntryHeader)
                {
                    sizePatchPos = baseOutputStream_.get_Position();
                }
                if (entry.LocalHeaderRequiresZip64 || patchEntryHeader)
                {
                    WriteLeInt(-1);
                    WriteLeInt(-1);
                }
                else
                {
                    WriteLeInt(0);
                    WriteLeInt(0);
                }
            }
            byte[] array = ZipConstants.ConvertToArray(entry.Flags, entry.Name);
            if (array.Length > 65535)
            {
                throw new ZipException("Entry name too long.");
            }
            ZipExtraData zipExtraData = new ZipExtraData(entry.ExtraData);

            if (entry.LocalHeaderRequiresZip64)
            {
                zipExtraData.StartNewEntry();
                if (flag)
                {
                    zipExtraData.AddLeLong(entry.Size);
                    zipExtraData.AddLeLong(entry.CompressedSize);
                }
                else
                {
                    zipExtraData.AddLeLong(-1L);
                    zipExtraData.AddLeLong(-1L);
                }
                zipExtraData.AddNewEntry(1);
                if (!zipExtraData.Find(1))
                {
                    throw new ZipException("Internal error cant find extra data");
                }
                if (patchEntryHeader)
                {
                    sizePatchPos = zipExtraData.CurrentReadIndex;
                }
            }
            else
            {
                zipExtraData.Delete(1);
            }
            byte[] entryData = zipExtraData.GetEntryData();
            WriteLeShort(array.Length);
            WriteLeShort(entryData.Length);
            if (array.Length > 0)
            {
                baseOutputStream_.Write(array, 0, array.Length);
            }
            if (entry.LocalHeaderRequiresZip64 && patchEntryHeader)
            {
                sizePatchPos += baseOutputStream_.get_Position();
            }
            if (entryData.Length > 0)
            {
                baseOutputStream_.Write(entryData, 0, entryData.Length);
            }
            offset += 30 + array.Length + entryData.Length;
            if (entry.AESKeySize > 0)
            {
                offset += entry.AESOverheadSize;
            }
            curEntry = entry;
            crc.Reset();
            if (compressionMethod == CompressionMethod.Deflated)
            {
                deflater_.Reset();
                deflater_.SetLevel(level);
            }
            size = 0L;
            if (entry.IsCrypted)
            {
                if (entry.Crc < 0)
                {
                    WriteEncryptionHeader(entry.DosTime << 16);
                }
                else
                {
                    WriteEncryptionHeader(entry.Crc);
                }
            }
        }
        public void PutNextEntry(ZipEntry entry)
        {
            if ( entry == null ) {
                throw new ArgumentNullException("entry");
            }

            if (entries == null) {
                throw new InvalidOperationException("ZipOutputStream was finished");
            }

            if (curEntry != null) {
                CloseEntry();
            }

            if (entries.Count == int.MaxValue) {
                throw new ZipException("Too many entries for Zip file");
            }

            CompressionMethod method = entry.CompressionMethod;
            int compressionLevel = defaultCompressionLevel;

            entry.Flags &= (int)GeneralBitFlags.UnicodeText;
            patchEntryHeader = false;

            bool headerInfoAvailable;

            if (entry.Size == 0)
            {
                entry.CompressedSize = entry.Size;
                entry.Crc = 0;
                method = CompressionMethod.Stored;
                headerInfoAvailable = true;
            }
            else
            {
                headerInfoAvailable = (entry.Size >= 0) && entry.HasCrc;

                if (method == CompressionMethod.Stored)
                {
                    if (!headerInfoAvailable)
                    {
                        if (!CanPatchEntries)
                        {
                            method = CompressionMethod.Deflated;
                            compressionLevel = 0;
                        }
                    }
                    else
                    {
                        entry.CompressedSize = entry.Size;
                        headerInfoAvailable = entry.HasCrc;
                    }
                }
            }

            if (headerInfoAvailable == false) {
                if (CanPatchEntries == false) {

                    entry.Flags |= 8;
                } else {
                    patchEntryHeader = true;
                }
            }

            if (Password != null) {
                entry.IsCrypted = true;
                if (entry.Crc < 0) {

                    entry.Flags |= 8;
                }
            }

            entry.Offset = offset;
            entry.CompressionMethod = (CompressionMethod)method;

            curMethod = method;
            sizePatchPos = -1;

            if ( (useZip64_ == UseZip64.On) || ((entry.Size < 0) && (useZip64_ == UseZip64.Dynamic)) ) {
                entry.ForceZip64();
            }

            WriteLeInt(ZipConstants.LocalHeaderSignature);

            WriteLeShort(entry.Version);
            WriteLeShort(entry.Flags);
            WriteLeShort((byte)method);
            WriteLeInt((int)entry.DosTime);

            if (headerInfoAvailable == true) {
                WriteLeInt((int)entry.Crc);
                if ( entry.LocalHeaderRequiresZip64 ) {
                    WriteLeInt(-1);
                    WriteLeInt(-1);
                }
                else {
                    WriteLeInt(entry.IsCrypted ? (int)entry.CompressedSize + ZipConstants.CryptoHeaderSize : (int)entry.CompressedSize);
                    WriteLeInt((int)entry.Size);
                }
            } else {
                if (patchEntryHeader == true) {
                    crcPatchPos = baseOutputStream_.Position;
                }
                WriteLeInt(0);

                if ( patchEntryHeader ) {
                    sizePatchPos = baseOutputStream_.Position;
                }

                if ( entry.LocalHeaderRequiresZip64 || patchEntryHeader ) {
                    WriteLeInt(-1);
                    WriteLeInt(-1);
                }
                else {
                    WriteLeInt(0);
                    WriteLeInt(0);
                }
            }

            byte[] name = ZipConstants.ConvertToArray(entry.Flags, entry.Name);

            if (name.Length > 0xFFFF) {
                throw new ZipException("Entry name too long.");
            }

            ZipExtraData ed = new ZipExtraData(entry.ExtraData);

            if (entry.LocalHeaderRequiresZip64) {
                ed.StartNewEntry();
                if (headerInfoAvailable) {
                    ed.AddLeLong(entry.Size);
                    ed.AddLeLong(entry.CompressedSize);
                }
                else {
                    ed.AddLeLong(-1);
                    ed.AddLeLong(-1);
                }
                ed.AddNewEntry(1);

                if ( !ed.Find(1) ) {
                    throw new ZipException("Internal error cant find extra data");
                }

                if ( patchEntryHeader ) {
                    sizePatchPos = ed.CurrentReadIndex;
                }
            }
            else {
                ed.Delete(1);
            }

            byte[] extra = ed.GetEntryData();

            WriteLeShort(name.Length);
            WriteLeShort(extra.Length);

            if ( name.Length > 0 ) {
                baseOutputStream_.Write(name, 0, name.Length);
            }

            if ( entry.LocalHeaderRequiresZip64 && patchEntryHeader ) {
                sizePatchPos += baseOutputStream_.Position;
            }

            if ( extra.Length > 0 ) {
                baseOutputStream_.Write(extra, 0, extra.Length);
            }

            offset += ZipConstants.LocalHeaderBaseSize + name.Length + extra.Length;

            curEntry = entry;
            crc.Reset();
            if (method == CompressionMethod.Deflated) {
                deflater_.Reset();
                deflater_.SetLevel(compressionLevel);
            }
            size = 0;

            if (entry.IsCrypted == true) {
                if (entry.Crc < 0) {
                    WriteEncryptionHeader(entry.DosTime << 16);
                } else {
                    WriteEncryptionHeader(entry.Crc);
                }
            }
        }
예제 #9
0
        public void PutNextEntry(ZipEntry entry)
        {
            if (entry == null)
            {
                throw new ArgumentNullException("entry");
            }

            if (entries == null)
            {
                throw new InvalidOperationException("ZipOutputStream was finished");
            }

            if (curEntry != null)
            {
                CloseEntry();
            }

            if (entries.Count == int.MaxValue)
            {
                throw new ZipException("Too many entries for Zip file");
            }

            CompressionMethod method = entry.CompressionMethod;
            int compressionLevel     = defaultCompressionLevel;


            entry.Flags     &= (int)GeneralBitFlags.UnicodeText;
            patchEntryHeader = false;

            bool headerInfoAvailable;

            if (entry.Size == 0)
            {
                entry.CompressedSize = entry.Size;
                entry.Crc            = 0;
                method = CompressionMethod.Stored;
                headerInfoAvailable = true;
            }
            else
            {
                headerInfoAvailable = (entry.Size >= 0) && entry.HasCrc;


                if (method == CompressionMethod.Stored)
                {
                    if (!headerInfoAvailable)
                    {
                        if (!CanPatchEntries)
                        {
                            method           = CompressionMethod.Deflated;
                            compressionLevel = 0;
                        }
                    }
                    else
                    {
                        entry.CompressedSize = entry.Size;
                        headerInfoAvailable  = entry.HasCrc;
                    }
                }
            }

            if (headerInfoAvailable == false)
            {
                if (CanPatchEntries == false)
                {
                    entry.Flags |= 8;
                }
                else
                {
                    patchEntryHeader = true;
                }
            }

            if (Password != null)
            {
                entry.IsCrypted = true;
                if (entry.Crc < 0)
                {
                    entry.Flags |= 8;
                }
            }

            entry.Offset            = offset;
            entry.CompressionMethod = (CompressionMethod)method;

            curMethod    = method;
            sizePatchPos = -1;

            if ((useZip64_ == UseZip64.On) || ((entry.Size < 0) && (useZip64_ == UseZip64.Dynamic)))
            {
                entry.ForceZip64();
            }


            WriteLeInt(ZipConstants.LocalHeaderSignature);

            WriteLeShort(entry.Version);
            WriteLeShort(entry.Flags);
            WriteLeShort((byte)method);
            WriteLeInt((int)entry.DosTime);


            if (headerInfoAvailable == true)
            {
                WriteLeInt((int)entry.Crc);
                if (entry.LocalHeaderRequiresZip64)
                {
                    WriteLeInt(-1);
                    WriteLeInt(-1);
                }
                else
                {
                    WriteLeInt(entry.IsCrypted ? (int)entry.CompressedSize + ZipConstants.CryptoHeaderSize : (int)entry.CompressedSize);
                    WriteLeInt((int)entry.Size);
                }
            }
            else
            {
                if (patchEntryHeader == true)
                {
                    crcPatchPos = baseOutputStream_.Position;
                }
                WriteLeInt(0);

                if (patchEntryHeader)
                {
                    sizePatchPos = baseOutputStream_.Position;
                }


                if (entry.LocalHeaderRequiresZip64 || patchEntryHeader)
                {
                    WriteLeInt(-1);
                    WriteLeInt(-1);
                }
                else
                {
                    WriteLeInt(0);
                    WriteLeInt(0);
                }
            }

            byte[] name = ZipConstants.ConvertToArray(entry.Flags, entry.Name);

            if (name.Length > 0xFFFF)
            {
                throw new ZipException("Entry name too long.");
            }

            ZipExtraData ed = new ZipExtraData(entry.ExtraData);

            if (entry.LocalHeaderRequiresZip64)
            {
                ed.StartNewEntry();
                if (headerInfoAvailable)
                {
                    ed.AddLeLong(entry.Size);
                    ed.AddLeLong(entry.CompressedSize);
                }
                else
                {
                    ed.AddLeLong(-1);
                    ed.AddLeLong(-1);
                }
                ed.AddNewEntry(1);

                if (!ed.Find(1))
                {
                    throw new ZipException("Internal error cant find extra data");
                }

                if (patchEntryHeader)
                {
                    sizePatchPos = ed.CurrentReadIndex;
                }
            }
            else
            {
                ed.Delete(1);
            }

            byte[] extra = ed.GetEntryData();

            WriteLeShort(name.Length);
            WriteLeShort(extra.Length);

            if (name.Length > 0)
            {
                baseOutputStream_.Write(name, 0, name.Length);
            }

            if (entry.LocalHeaderRequiresZip64 && patchEntryHeader)
            {
                sizePatchPos += baseOutputStream_.Position;
            }

            if (extra.Length > 0)
            {
                baseOutputStream_.Write(extra, 0, extra.Length);
            }

            offset += ZipConstants.LocalHeaderBaseSize + name.Length + extra.Length;


            curEntry = entry;
            crc.Reset();
            if (method == CompressionMethod.Deflated)
            {
                deflater_.Reset();
                deflater_.SetLevel(compressionLevel);
            }
            size = 0;

            if (entry.IsCrypted == true)
            {
                if (entry.Crc < 0)
                {
                    WriteEncryptionHeader(entry.DosTime << 16);
                }
                else
                {
                    WriteEncryptionHeader(entry.Crc);
                }
            }
        }
예제 #10
0
 public void PutNextEntry(ZipEntry entry)
 {
     bool hasCrc;
     if (entry == null)
     {
         throw new ArgumentNullException("entry");
     }
     if (this.entries == null)
     {
         throw new InvalidOperationException("ZipOutputStream was finished");
     }
     if (this.curEntry != null)
     {
         this.CloseEntry();
     }
     if (this.entries.Count == 0x7fffffff)
     {
         throw new ZipException("Too many entries for Zip file");
     }
     CompressionMethod compressionMethod = entry.CompressionMethod;
     int defaultCompressionLevel = this.defaultCompressionLevel;
     entry.Flags &= 0x800;
     this.patchEntryHeader = false;
     if (entry.Size == 0L)
     {
         entry.CompressedSize = entry.Size;
         entry.Crc = 0L;
         compressionMethod = CompressionMethod.Stored;
         hasCrc = true;
     }
     else
     {
         hasCrc = ((entry.Size >= 0L) && entry.HasCrc) && (entry.CompressedSize >= 0L);
         if (compressionMethod == CompressionMethod.Stored)
         {
             if (!hasCrc)
             {
                 if (!base.CanPatchEntries)
                 {
                     compressionMethod = CompressionMethod.Deflated;
                     defaultCompressionLevel = 0;
                 }
             }
             else
             {
                 entry.CompressedSize = entry.Size;
                 hasCrc = entry.HasCrc;
             }
         }
     }
     if (!hasCrc)
     {
         if (!base.CanPatchEntries)
         {
             entry.Flags |= 8;
         }
         else
         {
             this.patchEntryHeader = true;
         }
     }
     if (base.Password != null)
     {
         entry.IsCrypted = true;
         if (entry.Crc < 0L)
         {
             entry.Flags |= 8;
         }
     }
     entry.Offset = this.offset;
     entry.CompressionMethod = compressionMethod;
     this.curMethod = compressionMethod;
     this.sizePatchPos = -1L;
     if ((this.useZip64_ == ICSharpCode.SharpZipLib.Zip.UseZip64.On) || ((entry.Size < 0L) && (this.useZip64_ == ICSharpCode.SharpZipLib.Zip.UseZip64.Dynamic)))
     {
         entry.ForceZip64();
     }
     this.WriteLeInt(0x4034b50);
     this.WriteLeShort(entry.Version);
     this.WriteLeShort(entry.Flags);
     this.WriteLeShort((byte) entry.CompressionMethodForHeader);
     this.WriteLeInt((int) entry.DosTime);
     if (hasCrc)
     {
         this.WriteLeInt((int) entry.Crc);
         if (entry.LocalHeaderRequiresZip64)
         {
             this.WriteLeInt(-1);
             this.WriteLeInt(-1);
         }
         else
         {
             this.WriteLeInt(entry.IsCrypted ? (((int) entry.CompressedSize) + 12) : ((int) entry.CompressedSize));
             this.WriteLeInt((int) entry.Size);
         }
     }
     else
     {
         if (this.patchEntryHeader)
         {
             this.crcPatchPos = base.baseOutputStream_.Position;
         }
         this.WriteLeInt(0);
         if (this.patchEntryHeader)
         {
             this.sizePatchPos = base.baseOutputStream_.Position;
         }
         if (entry.LocalHeaderRequiresZip64 || this.patchEntryHeader)
         {
             this.WriteLeInt(-1);
             this.WriteLeInt(-1);
         }
         else
         {
             this.WriteLeInt(0);
             this.WriteLeInt(0);
         }
     }
     byte[] buffer = ZipConstants.ConvertToArray(entry.Flags, entry.Name);
     if (buffer.Length > 0xffff)
     {
         throw new ZipException("Entry name too long.");
     }
     ZipExtraData extraData = new ZipExtraData(entry.ExtraData);
     if (entry.LocalHeaderRequiresZip64)
     {
         extraData.StartNewEntry();
         if (hasCrc)
         {
             extraData.AddLeLong(entry.Size);
             extraData.AddLeLong(entry.CompressedSize);
         }
         else
         {
             extraData.AddLeLong(-1L);
             extraData.AddLeLong(-1L);
         }
         extraData.AddNewEntry(1);
         if (!extraData.Find(1))
         {
             throw new ZipException("Internal error cant find extra data");
         }
         if (this.patchEntryHeader)
         {
             this.sizePatchPos = extraData.CurrentReadIndex;
         }
     }
     else
     {
         extraData.Delete(1);
     }
     if (entry.AESKeySize > 0)
     {
         AddExtraDataAES(entry, extraData);
     }
     byte[] entryData = extraData.GetEntryData();
     this.WriteLeShort(buffer.Length);
     this.WriteLeShort(entryData.Length);
     if (buffer.Length > 0)
     {
         base.baseOutputStream_.Write(buffer, 0, buffer.Length);
     }
     if (entry.LocalHeaderRequiresZip64 && this.patchEntryHeader)
     {
         this.sizePatchPos += base.baseOutputStream_.Position;
     }
     if (entryData.Length > 0)
     {
         base.baseOutputStream_.Write(entryData, 0, entryData.Length);
     }
     this.offset += (30 + buffer.Length) + entryData.Length;
     if (entry.AESKeySize > 0)
     {
         this.offset += entry.AESOverheadSize;
     }
     this.curEntry = entry;
     this.crc.Reset();
     if (compressionMethod == CompressionMethod.Deflated)
     {
         base.deflater_.Reset();
         base.deflater_.SetLevel(defaultCompressionLevel);
     }
     this.size = 0L;
     if (entry.IsCrypted)
     {
         if (entry.AESKeySize > 0)
         {
             this.WriteAESHeader(entry);
         }
         else if (entry.Crc < 0L)
         {
             this.WriteEncryptionHeader(entry.DosTime << 0x10);
         }
         else
         {
             this.WriteEncryptionHeader(entry.Crc);
         }
     }
 }