public WorkItem(int size,
                 Crisis.Ionic.Zlib.CompressionLevel compressLevel,
                 CompressionStrategy strategy,
                 int ix)
 {
     this.buffer= new byte[size];
     // alloc 5 bytes overhead for every block (margin of safety= 2)
     int n = size + ((size / 32768)+1) * 5 * 2;
     this.compressed = new byte[n];
     this.compressor = new ZlibCodec();
     this.compressor.InitializeDeflate(compressLevel, false);
     this.compressor.OutputBuffer = this.compressed;
     this.compressor.InputBuffer = this.buffer;
     this.index = ix;
 }
        /// <summary>
        ///   Prepare the given stream for output - wrap it in a CountingStream, and
        ///   then in a CRC stream, and an encryptor and deflator as appropriate.
        /// </summary>
        /// <remarks>
        ///   <para>
        ///     Previously this was used in ZipEntry.Write(), but in an effort to
        ///     introduce some efficiencies in that method I've refactored to put the
        ///     code inline.  This method still gets called by ZipOutputStream.
        ///   </para>
        /// </remarks>
        internal void PrepOutputStream(Stream s,
                                       long streamLength,
                                       out CountingStream outputCounter,
                                       out Stream encryptor,
                                       out Stream compressor,
                                       out Crisis.Ionic.Crc.CrcCalculatorStream output)
        {
            TraceWriteLine("PrepOutputStream: e({0}) comp({1}) crypto({2}) zf({3})",
                           FileName,
                           CompressionLevel,
                           Encryption,
                           _container.Name);

            // Wrap a counting stream around the raw output stream:
            // This is the last thing that happens before the bits go to the
            // application-provided stream.
            outputCounter = new CountingStream(s);

            // Sometimes the incoming "raw" output stream is already a CountingStream.
            // Doesn't matter. Wrap it with a counter anyway. We need to count at both
            // levels.

            if (streamLength != 0L)
            {
                // Maybe wrap an encrypting stream around that:
                // This will happen BEFORE output counting, and AFTER deflation, if encryption
                // is used.
                encryptor = MaybeApplyEncryption(outputCounter);

                // Maybe wrap a compressing Stream around that.
                // This will happen BEFORE encryption (if any) as we write data out.
                compressor = MaybeApplyCompression(encryptor, streamLength);
            }
            else
            {
                encryptor = compressor = outputCounter;
            }
            // Wrap a CrcCalculatorStream around that.
            // This will happen BEFORE compression (if any) as we write data out.
            output = new Crisis.Ionic.Crc.CrcCalculatorStream(compressor, true);
        }
        /// <summary>
        /// Retrieve the ZipEntry items in the ZipFile that conform to the specified criteria.
        /// </summary>
        /// <remarks>
        ///
        /// <para>
        /// This method applies the criteria set in the FileSelector instance (as described in
        /// the <see cref="FileSelector.SelectionCriteria"/>) to the specified ZipFile.  Using this
        /// method, for example, you can retrieve all entries from the given ZipFile that
        /// have filenames ending in .txt.
        /// </para>
        ///
        /// <para>
        /// Normally, applications would not call this method directly.  This method is used
        /// by the ZipFile class.
        /// </para>
        ///
        /// <para>
        /// This overload allows the selection of ZipEntry instances from the ZipFile to be restricted
        /// to entries contained within a particular directory in the ZipFile.
        /// </para>
        ///
        /// <para>
        /// Using the appropriate SelectionCriteria, you can retrieve entries based on size,
        /// time, and attributes. See <see cref="FileSelector.SelectionCriteria"/> for a
        /// description of the syntax of the SelectionCriteria string.
        /// </para>
        ///
        /// </remarks>
        ///
        /// <param name="zip">The ZipFile from which to retrieve entries.</param>
        ///
        /// <param name="directoryPathInArchive">
        /// the directory in the archive from which to select entries. If null, then
        /// all directories in the archive are used.
        /// </param>
        ///
        /// <returns>a collection of ZipEntry objects that conform to the criteria.</returns>
        public ICollection<Crisis.Ionic.Zip.ZipEntry> SelectEntries(Crisis.Ionic.Zip.ZipFile zip, string directoryPathInArchive)
        {
            if (zip == null)
                throw new ArgumentNullException("zip");

            var list = new List<Crisis.Ionic.Zip.ZipEntry>();
            // workitem 8559
            string slashSwapped = (directoryPathInArchive == null) ? null : directoryPathInArchive.Replace("/", "\\");
            // workitem 9174
            if (slashSwapped != null)
            {
                while (slashSwapped.EndsWith("\\"))
                    slashSwapped = slashSwapped.Substring(0, slashSwapped.Length - 1);
            }
            foreach (Crisis.Ionic.Zip.ZipEntry e in zip)
            {
                if (directoryPathInArchive == null || (Path.GetDirectoryName(e.FileName) == directoryPathInArchive)
                    || (Path.GetDirectoryName(e.FileName) == slashSwapped)) // workitem 8559
                    if (this.Evaluate(e))
                        list.Add(e);
            }

            return list;
        }
        internal void FinishOutputStream(Stream s,
                                         CountingStream entryCounter,
                                         Stream encryptor,
                                         Stream compressor,
                                         Crisis.Ionic.Crc.CrcCalculatorStream output)
        {
            if (output == null) return;

            output.Close();

            // by calling Close() on the deflate stream, we write the footer bytes, as necessary.
            if ((compressor as Crisis.Ionic.Zlib.DeflateStream) != null)
                compressor.Close();
#if BZIP
            else if ((compressor as Ionic.BZip2.BZip2OutputStream) != null)
                compressor.Close();
#if !NETCF
            else if ((compressor as Ionic.BZip2.ParallelBZip2OutputStream) != null)
                compressor.Close();
#endif
#endif

#if !NETCF
            else if ((compressor as Crisis.Ionic.Zlib.ParallelDeflateOutputStream) != null)
                compressor.Close();
#endif

            encryptor.Flush();
            encryptor.Close();

            _LengthOfTrailer = 0;

            _UncompressedSize = output.TotalBytesSlurped;

#if AESCRYPTO
            WinZipAesCipherStream wzacs = encryptor as WinZipAesCipherStream;
            if (wzacs != null && _UncompressedSize > 0)
            {
                s.Write(wzacs.FinalAuthentication, 0, 10);
                _LengthOfTrailer += 10;
            }
#endif
            _CompressedFileDataSize = entryCounter.BytesWritten;
            _CompressedSize = _CompressedFileDataSize;   // may be adjusted
            _Crc32 = output.Crc;

            // Set _RelativeOffsetOfLocalHeader now, to allow for re-streaming
            StoreRelativeOffset();
        }
 private bool Evaluate(Crisis.Ionic.Zip.ZipEntry entry)
 {
     bool result = _Criterion.Evaluate(entry);
     return result;
 }
        /// <summary>
        /// Retrieve the ZipEntry items in the ZipFile that conform to the specified criteria.
        /// </summary>
        /// <remarks>
        ///
        /// <para>
        /// This method applies the criteria set in the FileSelector instance (as described in
        /// the <see cref="FileSelector.SelectionCriteria"/>) to the specified ZipFile.  Using this
        /// method, for example, you can retrieve all entries from the given ZipFile that
        /// have filenames ending in .txt.
        /// </para>
        ///
        /// <para>
        /// Normally, applications would not call this method directly.  This method is used
        /// by the ZipFile class.
        /// </para>
        ///
        /// <para>
        /// Using the appropriate SelectionCriteria, you can retrieve entries based on size,
        /// time, and attributes. See <see cref="FileSelector.SelectionCriteria"/> for a
        /// description of the syntax of the SelectionCriteria string.
        /// </para>
        ///
        /// </remarks>
        ///
        /// <param name="zip">The ZipFile from which to retrieve entries.</param>
        ///
        /// <returns>a collection of ZipEntry objects that conform to the criteria.</returns>
        public ICollection<Crisis.Ionic.Zip.ZipEntry> SelectEntries(Crisis.Ionic.Zip.ZipFile zip)
        {
            if (zip == null)
                throw new ArgumentNullException("zip");

            var list = new List<Crisis.Ionic.Zip.ZipEntry>();

            foreach (Crisis.Ionic.Zip.ZipEntry e in zip)
            {
                if (this.Evaluate(e))
                    list.Add(e);
            }

            return list;
        }
 internal override bool Evaluate(Crisis.Ionic.Zip.ZipEntry entry)
 {
     FileAttributes fileAttrs = entry.Attributes;
     return _Evaluate(fileAttrs);
 }
 internal override bool Evaluate(Crisis.Ionic.Zip.ZipEntry entry)
 {
     bool result = Left.Evaluate(entry);
     switch (Conjunction)
     {
         case LogicalConjunction.AND:
             if (result)
                 result = Right.Evaluate(entry);
             break;
         case LogicalConjunction.OR:
             if (!result)
                 result = Right.Evaluate(entry);
             break;
         case LogicalConjunction.XOR:
             result ^= Right.Evaluate(entry);
             break;
     }
     return result;
 }
        internal override bool Evaluate(Crisis.Ionic.Zip.ZipEntry entry)
        {
            bool result = (ObjectType == 'D')
                ? entry.IsDirectory
                : !entry.IsDirectory;

            if (Operator != ComparisonOperator.EqualTo)
                result = !result;
            return result;
        }
 internal override bool Evaluate(Crisis.Ionic.Zip.ZipEntry entry)
 {
     DateTime x;
     switch (Which)
     {
         case WhichTime.atime:
             x = entry.AccessedTime;
             break;
         case WhichTime.mtime:
             x = entry.ModifiedTime;
             break;
         case WhichTime.ctime:
             x = entry.CreationTime;
             break;
         default: throw new ArgumentException("??time");
     }
     return _Evaluate(x);
 }
 internal override bool Evaluate(Crisis.Ionic.Zip.ZipEntry entry)
 {
     return _Evaluate(entry.UncompressedSize);
 }
        internal override bool Evaluate(Crisis.Ionic.Zip.ZipEntry entry)
        {
            // swap forward slashes in the entry.FileName for backslashes
            string transformedFileName = entry.FileName.Replace("/", "\\");

            return _Evaluate(transformedFileName);
        }
 internal abstract bool Evaluate(Crisis.Ionic.Zip.ZipEntry entry);