Esempio n. 1
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		/// <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");
			}

			ZipFile result = new ZipFile();
			result.name_ = fileName;
			result.baseStream_ = File.Create(fileName);
			return result;
		}
Esempio n. 2
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		/// <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;
		}
Esempio n. 3
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		/// <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;
		}
Esempio n. 4
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		/// <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)
		{
		}
Esempio n. 5
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		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_);
		}
Esempio n. 6
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		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.
			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);
			}
		}
Esempio n. 7
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		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;
		}
Esempio n. 8
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		void AddEntry(ZipFile workFile, ZipUpdate update)
		{
			long dataStart = 0;
			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);
					dataStart = workFile.baseStream_.Position;

					using ( Stream output = workFile.GetOutputStream(update.Entry) ) {
						CopyBytes(update, output, source, sourceStreamLength, true);
					}
				}
			}
			else {
				workFile.WriteLocalEntryHeader(update);
				dataStart = workFile.baseStream_.Position;
			}

			long dataEnd = workFile.baseStream_.Position;
			update.OutEntry.CompressedSize = dataEnd - dataStart;
		}
Esempio n. 9
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		/// <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;
		}