コード例 #1
0
ファイル: ZipReader.cs プロジェクト: AlfiyaZi/zipdotnet
        /// <summary>Advances the enumerator to the next element of the collection.</summary>
        /// <summary>Sets <see cref="Current"/> to the next zip entry.</summary>
        /// <returns><c>true</c> if the next entry is not <c>null</c>; otherwise <c>false</c>.</returns>
        public bool MoveNext()
        {
            // close any open entry
            CloseEntry();

            int result;

            if (_current == null)
            {
                result = ZipLib.unzGoToFirstFile(_handle);
            }
            else
            {
                result = ZipLib.unzGoToNextFile(_handle);
            }
            if (result < 0)
            {
                // last entry found - not an exceptional case
                _current = null;
            }
            else
            {
                // entry found
                OpenEntry();
            }

            return(_current != null);
        }
コード例 #2
0
        /// <summary>Creates a new zip entry in the directory and positions the stream to the start of the entry data.</summary>
        /// <param name="entry">The zip entry to be written.</param>
        /// <remarks>Closes the current entry if still active.</remarks>
        public void AddEntry(ZipEntry entry)
        {
            ZipFileEntryInfo info;

            info.DateTime = entry.ModifiedTime;

            int result;

            unsafe {
                byte[] extra       = null;
                uint   extraLength = 0;
                if (entry.ExtraField != null)
                {
                    extra       = entry.ExtraField;
                    extraLength = (uint)entry.ExtraField.Length;
                }

                result = ZipLib.zipOpenNewFileInZip(
                    _handle,
                    entry.Name,
                    &info,
                    extra,
                    extraLength,
                    null, 0,
                    entry.Comment,
                    (int)entry.Method,
                    entry.Level);
            }
            _entryOpen = true;
        }
コード例 #3
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 private void CloseEntry()
 {
     if (_entryOpen)
     {
         int result = ZipLib.zipCloseFileInZip(_handle);
         _entryOpen = false;
     }
 }
コード例 #4
0
ファイル: ZipReader.cs プロジェクト: AlfiyaZi/zipdotnet
 /// <summary>Initializes a instance of the <see cref="ZipReader"/> class for reading the zip file with the given name.</summary>
 /// <param name="fileName">The name of zip file that will be read.</param>
 public ZipReader(string fileName)
 {
     _fileName = fileName;
     _handle   = ZipLib.unzOpen(fileName);
     if (_handle == IntPtr.Zero)
     {
         string msg = String.Format("Could not open zip file '{0}'.", fileName);
         throw new ZipException(msg);
     }
 }
コード例 #5
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        /// <summary>Initializes a new instance fo the <see cref="ZipWriter"/> class with a specified file name.  Any Existing file will be overwritten.</summary>
        /// <param name="fileName">The name of the zip file to create.</param>
        public ZipWriter(string fileName)
        {
            _fileName = fileName;

            _handle = ZipLib.zipOpen(fileName, 0);
            if (_handle == IntPtr.Zero)
            {
                string msg = String.Format("Could not open zip file '{0}' for writing.", fileName);
                throw new ZipException(msg);
            }
        }
コード例 #6
0
ファイル: ZipReader.cs プロジェクト: AlfiyaZi/zipdotnet
        private void OpenEntry()
        {
            _current = new ZipEntry(_handle);
            int result = ZipLib.unzOpenCurrentFile(_handle);

            if (result < 0)
            {
                _current = null;
                throw new ZipException("Could not open entry for reading.");
            }
            _entryOpen = true;
        }
コード例 #7
0
ファイル: ZipReader.cs プロジェクト: AlfiyaZi/zipdotnet
        /// <summary>Seek to the specified entry.</summary>
        /// <param name="entryName">The name of the entry to seek to.</param>
        public void Seek(string entryName)
        {
            CloseEntry();
            int result = ZipLib.unzLocateFile(_handle, entryName, 0);

            if (result < 0)
            {
                string msg = String.Format("Could not locate entry named '{0}'.", entryName);
                throw new ZipException(msg);
            }
            OpenEntry();
        }
コード例 #8
0
ファイル: ZipReader.cs プロジェクト: AlfiyaZi/zipdotnet
 private void CloseFile()
 {
     if (_handle != IntPtr.Zero)
     {
         CloseEntry();
         int result = ZipLib.unzClose(_handle);
         if (result < 0)
         {
             throw new ZipException("Could not close zip file.");
         }
         _handle = IntPtr.Zero;
     }
 }
コード例 #9
0
ファイル: ZipReader.cs プロジェクト: AlfiyaZi/zipdotnet
        /// <summary>Uncompress a block of bytes from the current zip entry and writes the data in a given buffer.</summary>
        /// <param name="buffer">The array to write data into.</param>
        /// <param name="index">The byte offset in <paramref name="buffer"/> at which to begin writing.</param>
        /// <param name="count">The maximum number of bytes to read.</param>
        public int Read(byte[] buffer, int index, int count)
        {
            if (index != 0)
            {
                throw new ArgumentException("index", "Only index values of zero currently supported.");
            }
            int bytesRead = ZipLib.unzReadCurrentFile(_handle, buffer, (uint)count);

            if (bytesRead < 0)
            {
                throw new ZipException("Error reading zip entry.");
            }
            return(bytesRead);
        }
コード例 #10
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        /// <summary>Creates a new Zip file entry reading values from a zip file.</summary>
        internal ZipEntry(IntPtr handle)
        {
            ZipEntryInfo entryInfo;
            int          result = 0;

            unsafe {
                result = ZipLib.unzGetCurrentFileInfo(handle, &entryInfo, null, 0, null, 0, null, 0);
            }
            if (result != 0)
            {
                throw new ZipException("Could not read entries from zip file " + Name);
            }

            ExtraField = new byte[entryInfo.ExtraFieldLength];
            sbyte[] entryNameBuffer = new sbyte[entryInfo.FileNameLength];
            sbyte[] commentBuffer   = new sbyte[entryInfo.CommentLength];

            unsafe {
                result = ZipLib.unzGetCurrentFileInfo(handle, &entryInfo,
                                                      entryNameBuffer, (uint)entryNameBuffer.Length,
                                                      ExtraField, (uint)ExtraField.Length,
                                                      commentBuffer, (uint)commentBuffer.Length);
            }
            if (result != 0)
            {
                throw new ZipException("Could not read entries from zip file " + Name);
            }

            _name    = ZipLib.AnsiToString(entryNameBuffer);
            _comment = ZipLib.AnsiToString(commentBuffer);

            _crc = entryInfo.Crc;
            _compressedLength   = entryInfo.CompressedSize;
            _uncompressedLength = entryInfo.UncompressedSize;
            _method             = (CompressionMethod)entryInfo.CompressionMethod;
            _modifiedTime       = new DateTime(
                (int)entryInfo.DateTime.Year,
                (int)entryInfo.DateTime.Month + 1,
                (int)entryInfo.DateTime.Day,
                (int)entryInfo.DateTime.Hours,
                (int)entryInfo.DateTime.Minutes,
                (int)entryInfo.DateTime.Seconds);
        }
コード例 #11
0
ファイル: ZipReader.cs プロジェクト: AlfiyaZi/zipdotnet
        private void CloseEntry()
        {
            if (_entryOpen)
            {
                int result = ZipLib.unzCloseCurrentFile(_handle);
                if (result < 0)
                {
                    switch ((ErrorCode)result)
                    {
                    case ErrorCode.CrcError:
                        throw new ZipException("All the file was read but the CRC did not match.");

                    default:
                        throw new ZipException("Could not close zip entry.");
                    }
                }
                _entryOpen = false;
            }
        }
コード例 #12
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 /// <summary>Compress a block of bytes from the given buffer and writes them into the current zip entry.</summary>
 /// <param name="buffer">The array to read data from.</param>
 /// <param name="index">The byte offset in <paramref name="buffer"/> at which to begin reading.</param>
 /// <param name="count">The maximum number of bytes to write.</param>
 public void Write(byte[] buffer, int index, int count)
 {
     int result = ZipLib.zipWriteInFileInZip(_handle, buffer, (uint)count);
 }