/// <summary> /// Create a new <see cref="ZipFile"/> whose data will be stored on a stream. /// </summary> /// <param name="outStream">The stream providing data storage.</param> /// <returns>Returns the newly created <see cref="ZipFile"/></returns> public static ZipFile Create(Stream outStream) { if (outStream == null) { throw new ArgumentNullException("outStream"); } if (!outStream.CanWrite) { throw new ArgumentException("Stream is not writeable", "outStream"); } if (!outStream.CanSeek) { throw new ArgumentException("Stream is not seekable", "outStream"); } ZipFile result = new ZipFile(); result.baseStream_ = outStream; return result; }
/// <summary> /// Initializes a new instance of the <see cref="DiskArchiveStorage"/> class. /// </summary> /// <param name="file">The file.</param> public DiskArchiveStorage(ZipFile file) : this(file, FileUpdateMode.Safe) { }
/// <summary> /// Create a new <see cref="ZipFile"/> whose data will be stored in a file. /// </summary> /// <param name="fileName">The name of the archive to create.</param> /// <returns>Returns the newly created <see cref="ZipFile"/></returns> public static ZipFile Create(string fileName) { if (fileName == null) { throw new ArgumentNullException("fileName"); } FileStream fs = File.Create(fileName); ZipFile result = new ZipFile(); result.name_ = fileName; result.baseStream_ = fs; result.isStreamOwner = true; return result; }
private void CopyEntry(ZipFile workFile, ZipUpdate update) { workFile.WriteLocalEntryHeader(update); if (update.Entry.CompressedSize > 0) { const int NameLengthOffset = 26; long entryDataOffset = update.Entry.Offset + NameLengthOffset; // TODO: This wont work for SFX files! baseStream_.Seek(entryDataOffset, SeekOrigin.Begin); uint nameLength = ReadLEUshort(); uint extraLength = ReadLEUshort(); baseStream_.Seek(nameLength + extraLength, SeekOrigin.Current); CopyBytes(update, workFile.baseStream_, baseStream_, update.Entry.CompressedSize, false); } CopyDescriptorBytes(update, workFile.baseStream_, baseStream_); }
/// <summary> /// Initializes a new instance of the <see cref="DiskArchiveStorage"/> class. /// </summary> /// <param name="file">The file.</param> /// <param name="updateMode">The update mode.</param> public DiskArchiveStorage(ZipFile file, FileUpdateMode updateMode) : base(updateMode) { if (file.Name == null) { throw new ZipException("Cant handle non file archives"); } fileName_ = file.Name; }
private void CopyEntryDirect(ZipFile workFile, ZipUpdate update, ref long destinationPosition) { bool skipOver = false; if (update.Entry.Offset == destinationPosition) { skipOver = true; } if (!skipOver) { baseStream_.Position = destinationPosition; workFile.WriteLocalEntryHeader(update); destinationPosition = baseStream_.Position; } long sourcePosition = 0; const int NameLengthOffset = 26; // TODO: Add base for SFX friendly handling long entryDataOffset = update.Entry.Offset + NameLengthOffset; baseStream_.Seek(entryDataOffset, SeekOrigin.Begin); // Clumsy way of handling retrieving the original name and extra data length for now. // TODO: Stop re-reading name and data length in CopyEntryDirect. uint nameLength = ReadLEUshort(); uint extraLength = ReadLEUshort(); sourcePosition = baseStream_.Position + nameLength + extraLength; if (skipOver) { destinationPosition += (sourcePosition - entryDataOffset) + NameLengthOffset + // Header size update.Entry.CompressedSize + GetDescriptorSize(update); } else { if (update.Entry.CompressedSize > 0) { CopyEntryDataDirect(update, baseStream_, false, ref destinationPosition, ref sourcePosition); } CopyDescriptorBytesDirect(update, baseStream_, ref destinationPosition, sourcePosition); } }
private void ModifyEntry(ZipFile workFile, ZipUpdate update) { workFile.WriteLocalEntryHeader(update); long dataStart = workFile.baseStream_.Position; // TODO: This is slow if the changes don't effect the data!! if (update.Entry.IsFile && (update.Filename != null)) { using (Stream output = workFile.GetOutputStream(update.OutEntry)) { using (Stream source = this.GetInputStream(update.Entry)) { CopyBytes(update, output, source, source.Length, true); } } } long dataEnd = workFile.baseStream_.Position; update.Entry.CompressedSize = dataEnd - dataStart; }
private void AddEntry(ZipFile workFile, ZipUpdate update) { Stream source = null; if (update.Entry.IsFile) { source = update.GetSource(); if (source == null) { source = updateDataSource_.GetSource(update.Entry, update.Filename); } } if (source != null) { using (source) { long sourceStreamLength = source.Length; if (update.OutEntry.Size < 0) { update.OutEntry.Size = sourceStreamLength; } else { // Check for errant entries. if (update.OutEntry.Size != sourceStreamLength) { throw new ZipException("Entry size/stream size mismatch"); } } workFile.WriteLocalEntryHeader(update); long dataStart = workFile.baseStream_.Position; using (Stream output = workFile.GetOutputStream(update.OutEntry)) { CopyBytes(update, output, source, sourceStreamLength, true); } long dataEnd = workFile.baseStream_.Position; update.OutEntry.CompressedSize = dataEnd - dataStart; if ((update.OutEntry.Flags & (int) GeneralBitFlags.Descriptor) == (int) GeneralBitFlags.Descriptor) { ZipHelperStream helper = new ZipHelperStream(workFile.baseStream_); helper.WriteDataDescriptor(update.OutEntry); } } } else { workFile.WriteLocalEntryHeader(update); update.OutEntry.CompressedSize = 0; } }
/// <summary> /// Initialise a new instance of <see cref="TestStatus"/> /// </summary> /// <param name="file">The <see cref="ZipFile"/> this status applies to.</param> public TestStatus(ZipFile file) { file_ = file; }
/// <summary> /// Extract the contents of a zip file. /// </summary> /// <param name="zipFileName">The zip file to extract from.</param> /// <param name="targetDirectory">The directory to save extracted information in.</param> /// <param name="overwrite">The style of <see cref="Overwrite">overwriting</see> to apply.</param> /// <param name="confirmDelegate">A delegate to invoke when confirming overwriting.</param> /// <param name="fileFilter">A filter to apply to files.</param> /// <param name="directoryFilter">A filter to apply to directories.</param> /// <param name="restoreDateTime">Flag indicating wether to restore the date and time for extracted files.</param> public void ExtractZip(string zipFileName, string targetDirectory, Overwrite overwrite, ConfirmOverwriteDelegate confirmDelegate, string fileFilter, string directoryFilter, bool restoreDateTime) { if ((overwrite == Overwrite.Prompt) && (confirmDelegate == null)) { throw new ArgumentNullException("confirmDelegate"); } continueRunning_ = true; overwrite_ = overwrite; confirmDelegate_ = confirmDelegate; targetDirectory_ = targetDirectory; fileFilter_ = new NameFilter(fileFilter); directoryFilter_ = new NameFilter(directoryFilter); restoreDateTimeOnExtract_ = restoreDateTime; using (zipFile_ = new ZipFile(zipFileName)) { #if !NETCF_1_0 if (password_ != null) { zipFile_.Password = password_; } #endif IEnumerator enumerator = zipFile_.GetEnumerator(); while (continueRunning_ && enumerator.MoveNext()) { ZipEntry entry = (ZipEntry) enumerator.Current; if (entry.IsFile) { if (directoryFilter_.IsMatch(Path.GetDirectoryName(entry.Name)) && fileFilter_.IsMatch(entry.Name)) { ExtractEntry(entry); } } else if (entry.IsDirectory) { if (directoryFilter_.IsMatch(entry.Name) && CreateEmptyDirectories) { ExtractEntry(entry); } } else { // Do nothing for volume labels etc... } } } }