/// <summary>
/// a class to parse all the controls in a file
/// </summary>
/// <param name="fileLocation">location of the file</param>
/// <param name="Length">length of the section</param>
/// <param name="offSet">where in the file it is stored</param>
/// <returns>a list of page elements</returns>
internal List<PageElement> ReadPage(string fileLocation, int Length, int offSet)
{
List<PageElement> readControls = new List<PageElement>();
//opens up a memory stream to store the bytes from the file
using (MemoryStream pageStream = new MemoryStream())
{
using (FileStream fs = File.Open(fileLocation, FileMode.Open))
{
//reads in all the bytes
byte[] bytebuffer = new byte[Length];
fs.Position = offSet + HeaderOffset;
fs.Read(bytebuffer, 0, Length);
//saves the bytes into the memory stream
pageStream.Write(bytebuffer, 0, bytebuffer.Length);
}
//flushes the memory stream to save all the data in and resets the position
pageStream.Flush();
pageStream.Position = 0;
int nodes = 0;
string buffer = "";
//opens the line reader
//and sets the expected number of nodes
LineReader lr = new LineReader(pageStream);
PageElement PE = new PageElement();
buffer = lr.ReadLine();
nodes = Getint(buffer);
nodes *= 13;
while (nodes != 0)
{
buffer = lr.ReadLine();
//if the buffer is empty skip to the next line
if (!string.IsNullOrWhiteSpace(buffer))
{
//gets the action
string action = GetParam(buffer);
switch (action)
{
case "cc":
//adds a new page element if it is not new
if (!PE.Equals(new PageElement()))
readControls.Add(PE);
PE = new PageElement();
break;
case "width":
PE.Width = GetDouble(buffer);
break;
case "height":
PE.Height = GetDouble(buffer);
break;
case "top":
PE.Top = GetDouble(buffer);
break;
case "left":
PE.Left = GetDouble(buffer);
break;
case "type":
PE.ControlType = GetString(buffer);
if (PE.ControlType == "System.Windows.Controls.Image")
nodes++;
break;
case "fill":
PE.Child.Fill = GetString(buffer);
break;
case "brush":
PE.Child.Brush = GetString(buffer);
break;
case "zindex":
PE.ZIndex = Getint(buffer);
break;
case "rotation":
PE.Rotation = GetDouble(buffer);
break;
case "background":
PE.Child.BackgroundColor = GetString(buffer);
break;
case "borderthickness":
//read in an array of numbers
string[] numbers = GetString(buffer).Split(',');
int[] directions = new int[4];
for (int i = 0; i < 4; i++)
{
directions[i] = int.Parse(numbers[i]);
}
PE.Child.BorderThickness = new Thickness(
directions[0], directions[1],
directions[2], directions[3]
);
break;
case "rtf":
//if the rtf document still has more content keep reading
PE.Child.Document = GetString(buffer);
while (lr.Peek() == '{' || lr.Peek() == '}')
{
PE.Child.Document += lr.ReadLine();
}
nodes++;
break;
case "img":
//read the entire image
int block = Getint(buffer);
PE.Child.Image = new byte[block];
pageStream.Read(PE.Child.Image, 0, block);
pageStream.Position += 4;
break;
default:
break;
}
}
//deincrement the amount of nodes remaining
nodes--;
}
//ad any page elements that may remain in buffer
readControls.Add(PE);
}
return readControls;
}
/// <summary>
/// Reads out the offsets and the lengths in the file for the pages in question
/// </summary>
/// <param name="fileLocation">string of the file location</param>
public Book ReadBook()
{
//adds in a new blank book
newBook = new Book();
int Offset = 0 ;
//opens the file at the location provided
using (FileStream fs = File.Open(fileLoc, FileMode.Open))
{
string headerLog = "";
LineReader lr = new LineReader(fs);
Page p = new Page();
int index = 0;
//reads untill the end of the file
while (fs.Position != fs.Length)
{
//reads in the inital line
string buffer = lr.ReadLine();
//adds the buffer and the end line demimiter to the log
headerLog += buffer + "\r\n";
bool indexRead = false;
//gets the action from the buffer
string action = GetParam(buffer);
switch (action)
{
case "bookname":
newBook.BookName = GetString(buffer);
break;
case "created":
newBook.Created = GetDate(buffer);
break;
case "lastmodified":
newBook.LastModified = GetDate(buffer);
break;
case "pagenumber":
p.PageNumber = Getint(buffer);
break;
case "page":
//if not the first page add the page to the book
if (index != 0)
{
newBook.Pages.Add(p);
}
p = new Page();
index++;
break;
case "offset":
p.Offset = Getint(buffer);
break;
case "length":
p.Length = Getint(buffer);
break;
case "pagetype":
//parses the enum value
p.PageType = (PageType)Enum.Parse(typeof(PageType), GetString(buffer));
break;
case "indexend":
//adds the last page to the book
newBook.Pages.Add(p);
//sets the number of bytes in the header
Offset = UnicodeEncoding.Unicode.GetByteCount(headerLog);
indexRead = true;
break;
//probally unreachible code now
case "node":
indexRead = true;
break;
default:
break;
}
//if we read the end of the header end the loop
if (indexRead)
{
break;
}
}
}
//loop through the number of pages found
//assigns a page number
// and gets the page contents
for (int i = 0; i < newBook.Pages.Count; i++)
{
newBook.Pages[i].PageNumber = i;
newBook.Pages[i].Children.AddRange(ReadPage(fileLoc, newBook.Pages[i].Length, newBook.Pages[i].Offset+Offset));
}
return newBook;
}
