private static IDictionary <string, object> ParseProperties(PeekableStreamReaderAdapter peekableStreamReader)
{
var result = new Dictionary <string, object>();
string nextLine;
while ((nextLine = peekableStreamReader.PeekLine())?.StartsWith("o ") ?? false)
{
nextLine = nextLine.Substring(2, nextLine.Length - 2); // Remove the white bullet point and tabulated white space
var splitInput = nextLine.Split(" - ");
if (splitInput.Length != 2)
{
throw new Exception("Item properties must be submitted in the form of \"key - value\"");
}
result.Add(splitInput[0], splitInput[1]);
peekableStreamReader.ReadLine(); // Advance the streamreader's position
}
return(result);
}
public static IList <IShape> TextFileToShapes(StreamReader fileStreamReader)
{
var peekableStreamReader = new PeekableStreamReaderAdapter(fileStreamReader);
string nextLine;
var result = new List <IShape>();
while ((nextLine = peekableStreamReader.ReadLine()) != null)
{
if (!nextLine.StartsWith("• "))
{
throw new Exception($"Input file not correctly formatted, new shapes must be marked with a black bullet point \" { nextLine }\"");
}
// Get the quantity and string word representing the name of the shape (after removing the bullet point and white space)
var splitInput = nextLine.Substring(2, nextLine.Length - 2).Split(" x ");
if (splitInput.Length != 2)
{
throw new Exception("Item properties must be submitted in the form of \"{number} x {name of shape}\"");
}
int quantity;
var shapeText = splitInput[1];
try
{
quantity = Convert.ToInt32(splitInput[0]);
}
catch
{
throw new Exception($"\"{splitInput[0]}\" is not a valid quantity for shape \"{ shapeText }\"");
}
IShape nextShape;
IDictionary <string, object> properties;
switch (shapeText)
{
case "Rectangle":
var rectangle = new Rectangle();
properties = ParseProperties(peekableStreamReader);
if (properties.ContainsKey("Position X"))
{
rectangle.PositionX = Convert.ToInt32(properties["Position X"]);
}
if (properties.ContainsKey("Position Y"))
{
rectangle.PositionY = Convert.ToInt32(properties["Position Y"]);
}
if (properties.ContainsKey("Width"))
{
rectangle.Width = Convert.ToInt32(properties["Width"]);
}
if (properties.ContainsKey("Height"))
{
rectangle.Height = Convert.ToInt32(properties["Height"]);
}
nextShape = rectangle;
break;
case "Square":
var square = new Square();
properties = ParseProperties(peekableStreamReader);
if (properties.ContainsKey("Position X"))
{
square.PositionX = Convert.ToInt32(properties["Position X"]);
}
if (properties.ContainsKey("Position Y"))
{
square.PositionY = Convert.ToInt32(properties["Position Y"]);
}
if (properties.ContainsKey("Width"))
{
square.Width = Convert.ToInt32(properties["Width"]);
}
nextShape = square;
break;
case "Ellipse":
var ellipse = new Ellipse();
properties = ParseProperties(peekableStreamReader);
if (properties.ContainsKey("Position X"))
{
ellipse.PositionX = Convert.ToInt32(properties["Position X"]);
}
if (properties.ContainsKey("Position Y"))
{
ellipse.PositionY = Convert.ToInt32(properties["Position Y"]);
}
if (properties.ContainsKey("Horizontal Diameter"))
{
ellipse.HorizontalDiameter = Convert.ToInt32(properties["Horizontal Diameter"]);
}
if (properties.ContainsKey("Vertical Diameter"))
{
ellipse.VerticalDiameter = Convert.ToInt32(properties["Vertical Diameter"]);
}
nextShape = ellipse;
break;
case "Circle":
var circle = new Circle();
properties = ParseProperties(peekableStreamReader);
if (properties.ContainsKey("Position X"))
{
circle.PositionX = Convert.ToInt32(properties["Position X"]);
}
if (properties.ContainsKey("Position Y"))
{
circle.PositionY = Convert.ToInt32(properties["Position Y"]);
}
if (properties.ContainsKey("Diameter"))
{
circle.Diameter = Convert.ToInt32(properties["Diameter"]);
}
nextShape = circle;
break;
case "Textbox":
var textBox = new Textbox();
properties = ParseProperties(peekableStreamReader);
if (properties.ContainsKey("Position X"))
{
textBox.PositionX = Convert.ToInt32(properties["Position X"]);
}
if (properties.ContainsKey("Position Y"))
{
textBox.PositionY = Convert.ToInt32(properties["Position Y"]);
}
if (properties.ContainsKey("Width"))
{
textBox.Width = Convert.ToInt32(properties["Width"]);
}
if (properties.ContainsKey("Height"))
{
textBox.Height = Convert.ToInt32(properties["Height"]);
}
if (properties.ContainsKey("Text"))
{
textBox.Text = (string)properties["Text"];
}
nextShape = textBox;
break;
default:
throw new Exception($"The string \"{ shapeText }\" cannot be parsed into a new shape object");
}
for (var i = 0; i < quantity; i++)
{
result.Add(nextShape);
}
}
return(result);
}