private void ParseRecord(BinaryReader reader,
string fileName,
long position,
ZipIOCentralDirectoryBlock centralDir,
ZipIOCentralDirectoryFileHeader centralDirFileHeader)
{
CheckDisposed();
Debug.Assert(!_blockManager.Streaming, "Not legal in Streaming mode");
_localFileHeader = ZipIOLocalFileHeader.ParseRecord(reader, _blockManager.Encoding);
// Let's find out whether local file descriptor is there or not
if (_localFileHeader.StreamingCreationFlag)
{
// seek forward by the uncompressed size
_blockManager.Stream.Seek(centralDirFileHeader.CompressedSize, SeekOrigin.Current);
_localFileDataDescriptor = ZipIOLocalFileDataDescriptor.ParseRecord(reader,
centralDirFileHeader.CompressedSize,
centralDirFileHeader.UncompressedSize,
centralDirFileHeader.Crc32,
_localFileHeader.VersionNeededToExtract);
}
else
{
_localFileDataDescriptor = null;
}
_offset = position;
_dirtyFlag = false;
checked
{
_fileItemStream = new ZipIOFileItemStream(_blockManager,
this,
position + _localFileHeader.Size,
centralDirFileHeader.CompressedSize);
}
// init deflate stream if necessary
if ((CompressionMethodEnum)_localFileHeader.CompressionMethod == CompressionMethodEnum.Deflated)
{
Debug.Assert(_fileItemStream.Position == 0, "CompressStream assumes base stream is at position zero");
_deflateStream = new CompressStream(_fileItemStream, centralDirFileHeader.UncompressedSize);
_crcCalculatingStream = new ProgressiveCrcCalculatingStream(_blockManager, _deflateStream, Crc32);
}
else if ((CompressionMethodEnum)_localFileHeader.CompressionMethod == CompressionMethodEnum.Stored)
{
_crcCalculatingStream = new ProgressiveCrcCalculatingStream(_blockManager, _fileItemStream, Crc32);
}
else
{
throw new NotSupportedException(SR.Get(SRID.ZipNotSupportedCompressionMethod));
}
Validate(fileName, centralDir, centralDirFileHeader);
}
static void Main(string[] args)
{
Console.WriteLine("Enter 1 for Factory Pattern. \n" +
"Enter 2 for Observer Pattern.");
int choice = Convert.ToInt32(Console.ReadLine());
switch (choice)
{
case 1:
var ef = new EmployeeFactory();
Console.WriteLine(ef.GetEmployee(1).GetBonus());
Console.ReadLine();
break;
case 2:
var observable = new TemperatureMonitor();
var observer = new TemperatureReporter();
observer.Subscribe(observable);
observable.GetTemperature();
break;
case 3:
var editor = new Editor();
var history = new Momento.History();
editor.SetContent("a");
history.Push(editor.CreateState());
editor.SetContent("b");
history.Push(editor.CreateState());
editor.SetContent("c");
history.Push(editor.CreateState());
editor.Restore(history.Pop());
editor.Restore(history.Pop());
Console.WriteLine(editor.GetContent());
break;
case 4:
Canvas canvas = new Canvas();
canvas.SelectTool(new BrushTool());
canvas.MouseDown();
canvas.MouseUp();
break;
case 5:
BrowseHistory browseHistory = new BrowseHistory();
browseHistory.Push("www.google.com");
browseHistory.Push("www.yahoo.com");
browseHistory.Push("www.reddif.com");
browseHistory.Push("www.youtube.com");
IIterator <string> iterator = browseHistory.CreateIterator();
while (iterator.HasNext())
{
var url = iterator.Current();
Console.WriteLine(url);
iterator.next();
}
break;
case 6:
//The difference between State and Strategy pattern is that in state pattern there is only a single state of the object and the behaviour is determined by the implementation injected.
//In strategy pattern there could be multiple behaviours in form of multiple properties inside class such as IFilter & ICompression. The implementation injected further changes the behaviour.
PhotoProcessor photoProcessor = new PhotoProcessor(new BnW(), new JPEG());
photoProcessor.ProcessPhoto();
break;
case 7: //template
AbstractPreFlightCheckList flightChecklist = new F16PreFlightCheckList();
flightChecklist.runChecklist();
break;
case 8: //command
var service = new CustomerService();
var command = new AddCustomerCommand(service);
var button = new Command.Button(command);
button.click();
var composite = new CompositeCommand();
composite.Add(new ResizeCommand());
composite.Add(new BlackAndWHiteCommand());
var button2 = new Command.Button(composite);
button2.click();
var commandHisotry = new Command.Undo.History();
var doc = new Command.Undo.HtmlDocument();
doc.SetContent("Hello World");
var boldCommand = new BoldCommand(doc, commandHisotry);
boldCommand.Execute();
Console.WriteLine(doc.GetContent());
var undoCommand = new UndoCommand(commandHisotry);
undoCommand.Execute();
Console.WriteLine(doc.GetContent());
break;
case 9: //Observer
DataSource dataSource = new DataSource();
dataSource.AddObserver(new Chart());
dataSource.AddObserver(new SpreadSheet(dataSource));
dataSource.SetValue("value changed");
break;
case 10: //Mediator //the pattern is applied to encapsulate or centralize the interactions amongst a number of objects
var dialog = new ArticlesDialogBox();
dialog.SimulateUsserInteraction();
break;
case 11: //Chain of Responsibility
//autehnticator --> logger --> compressor --> null
var compressor = new Compressor(null);
var logger = new Logger(compressor);
var authenticator = new Authenticator(logger);
var server = new WebServer(authenticator);
server.handle(new HttpRequest()
{
UserName = "******", Password = "******"
});
break;
case 12: //Visitor
var document = new Visitor.HtmlDocument();
document.Add(new HeadingNode());
document.Add(new AnchorNode());
document.Execute(new HighlighOperation());
break;
case 13: // Composite
var shape1 = new Shape();
var shape2 = new Shape();
var group1 = new Group();
group1.Add(shape1);
group1.Add(shape2);
var group2 = new Group();
var shape3 = new Shape();
group2.Add(shape3);
group1.Add(group2);
group1.render();
break;
case 14: //Adapter
Image image = new Image();
ImageViewer imageViewer = new ImageViewer(image);
imageViewer.Apply(new SepiaFilter());
imageViewer.Apply(new FancyAdapter(new FancyFilter()));
break;
case 15: //Decorator
var cloudStream = new CloudStream();
var encryptData = new EncryptStream(cloudStream);
var compressData = new CompressStream(encryptData);
compressData.write("some random data");
break;
case 16: //Facade
NotificationService notificationService = new NotificationService();
notificationService.Send("Hello..", "17.0.0.1");
break;
case 17: //Flyweight
PointService pointService = new PointService(new PointFactory());
var points = pointService.getPoints();
foreach (var p in points)
{
p.draw();
}
break;
case 18: //Bridge
AdvancedRemoteControl remote = new AdvancedRemoteControl(new SonyTv());
remote.setChannel(1);
break;
case 19: //Proxy
Library lib = new Library();
List <string> bookNames = new List <string>()
{
"a", "b", "c"
};
foreach (var book in bookNames)
{
lib.eBooks.Add(book, new EBookProxy(book));
}
lib.OpenEbook("a");
break;
case 20: //Factory Method
FactoryMethod.Employee emp = new FactoryMethod.Employee();
BaseEmployeeFactory permanentEmp = new PermanentEmployeeFactory(emp);
permanentEmp.ApplySalary();
Console.WriteLine(emp.HouseAllowance);
break;
case 21: //Abstract Factory
AbstractFactory.Employee emp1 = new AbstractFactory.Employee();
emp1.EmployeeTypeID = 1;
emp1.JobDescription = "Manager";
EmployeeSystemFactory esf = new EmployeeSystemFactory();
var computerFactory = esf.Create(emp1);
Console.WriteLine($"{computerFactory.GetType()}, {computerFactory.Processor()}, {computerFactory.SystemType()}, {computerFactory.Brand()}");
break;
case 22: //Builder
Builder.IToyBuilder toyBuilder = new Builder.PremiumToyBuilder();
Builder.ToyDirector toyDirector = new Builder.ToyDirector(toyBuilder);
toyDirector.CreateFullFledgedToy();
Console.WriteLine(toyDirector.GetToy());
break;
case 23: //Fluent Builder
//Difference of implementation is visible in Director class.
FluentBuilder.IToyBuilder toyBuilder1 = new FluentBuilder.PremiumToyBuilder();
FluentBuilder.ToyDirector toyDirector1 = new FluentBuilder.ToyDirector(toyBuilder1);
toyDirector1.CreateFullFledgedToy();
Console.WriteLine(toyDirector1.GetToy());
break;
case 24: //Object Pool
ObjectPool <OneExpensiveObjToCreate> objPool = new ObjectPool <OneExpensiveObjToCreate>();
OneExpensiveObjToCreate obj = objPool.Get();
objPool.Release(obj);
break;
}
Console.ReadLine();
}