/// <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> /// 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) { fileName_ = file.Name; }
/// <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) { }
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; }
/// <summary> /// Initialise a new instance of the <see cref="PartialInputStream"/> class. /// </summary> /// <param name="zipFile">The <see cref="ZipFile"/> containing the underlying stream to use for IO.</param> /// <param name="start">The start of the partial data.</param> /// <param name="length">The length of the partial data.</param> public PartialInputStream(ZipFile zipFile, long start, long length) { start_ = start; length_ = length; // Although this is the only time the zipfile is used // keeping a reference here prevents premature closure of // this zip file and thus the baseStream_. // Code like this will cause apparently random failures depending // on the size of the files and when garbage is collected. // // ZipFile z = new ZipFile (stream); // Stream reader = z.GetInputStream(0); // uses reader here.... zipFile_ = zipFile; baseStream_ = zipFile_.baseStream_; readPos_ = start; end_ = start + length; }
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) { if (update.OffsetBasedSize != -1) destinationPosition += update.OffsetBasedSize; else // TODO: Find out why this calculation comes up 4 bytes short on some entries in ODT (Office Document Text) archives. // WinZip produces a warning on these entries: // "caution: value of lrec.csize (compressed size) changed from ..." 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); } }
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_); }
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 { } 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> /// 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> /// <exception cref="ArgumentNullException"><paramref name="outStream"> is null</paramref></exception> /// <exception cref="ArgumentException"><paramref name="outStream"> doesnt support writing.</paramref></exception> 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> /// 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> /// <exception cref="ArgumentNullException"><paramref name="fileName"></paramref> is null</exception> 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; }