public static Document ReadFromFile(string pid, string did)
{
string fileName = pid + "\\" + did + ".txt";
Document finalDoc;
try
{
// Creates a new reader
StreamReader sr = new StreamReader(fileName);
using (TextReader tr = sr)
{
// Gets the title from the string and
string title = tr.ReadLine();
// Gets the path from the string
string path = tr.ReadLine();
// Gets the name of the owner from the string and makes a user
string ownerString = tr.ReadLine();
User owner = new User(ownerString);
// Gets the images id from the file, and add them as picture elements to the list of pictures.
string imageString = tr.ReadLine();
string[] imageArray = imageString.Split(new string[] { "," }, StringSplitOptions.None);
List <Picture> pictures = new List <Picture>();
foreach (string s in imageArray)
{
if ((String.Compare(s, "") != 0))
{
string dir = Directory.GetCurrentDirectory();
string pathToPicture = dir + @"\" + pid + @"\" + s + ".JPG";
Bitmap picture = new Bitmap(pathToPicture);
pictures.Add(new Picture(picture, s));
}
}
// Reading the modified and deleted booleans
bool modified = Boolean.Parse(tr.ReadLine());
bool deleted = Boolean.Parse(tr.ReadLine());
// Create a StringBuilder and append the rest of the file to it, it will contain both the log and the text of the document.
StringBuilder rest = new StringBuilder();
while (tr.Peek() != -1)
{
rest.AppendLine(tr.ReadLine());
}
string restString = rest.ToString();
// Splitting on the string "---------------ENDOFLOG------------------", by this we assume the user will NEVER write this exact
// string in his document, if he does, our program will not work.
string[] restArray = restString.Split(new string[] { "---------------ENDOFLOG------------------" }, StringSplitOptions.None);
if (restArray.Length != 2)
{
throw new Exception("The user wrote the string \"---------------ENDOFLOG------------------\", as part of his text");
}
// Remove the Mac line feed character from the text string.
string textString = Regex.Replace(restArray[1], "\r", "");
// Remove normal line feed at start of text.
string textS = textString.Substring(1);
// Remove normal line feed at end of text.
string text = "";
if (textS.Length != 0)
{
text = textS.Substring(0, textS.Length - 1);
}
// The list of entries the Document's Log will receive
List <Document.DocumentLog.Entry> entryList = new List <Document.DocumentLog.Entry>();
// Remove Mac line feed from Log.
string logWithoutMacLineFeed = Regex.Replace(restArray[0], "\r", "");
// Split the log into separate strings for each Entry.
string[] entryArray = logWithoutMacLineFeed.Split(new string[] { "Entry" }, StringSplitOptions.None);
// This loop takes each string in entryArray ( excluding the first, which is just "Log:" ), and creates an Entry from it.
for (int index = 1; index < entryArray.Length; index++)
{
// Create the Entrys log ( first line being the description, which will be removed before the Entry is created).
List <string> log = new List <string>();
string[] entry = entryArray[index].Split(new string[] { "\n" }, StringSplitOptions.None);
for (int index2 = 1; index2 < entry.Length; index2++)
{
if (!(String.Compare(entry[index2], "") == 0))
{
log.Add(entry[index2]);
}
}
// Find the first word in the description, which is the Users name.
string pattern = @"^\S*";
Match m = Regex.Match(log[0], pattern);
// Create the User object.
User user = new User(m.ToString());
// Get all remaining characters untill a number is found ( this being the description ).
string stringWithoutOwner = log[0].Substring(m.Index + m.Length);
pattern = @"\D*";
Match m2 = Regex.Match(stringWithoutOwner, pattern);
// Trim for whitespaces at start and end of string.
string desc = m2.ToString().Trim();
// Remove last 7 characters in string ( this part of the string is auto generated by the log, and not actually
// part of the description.
string description = desc.Substring(0, desc.Length - 7);
// Finally get the last part of the string, which is the DateTime of the Entry.
string dateString = stringWithoutOwner.Substring(m2.Index + m2.Length);
// Remove line feed from date string.
string dateStringWithoutLineFeed = Regex.Replace(dateString, "\n", "");
// Convert date string into DateTime object.
DateTime time = Convert.ToDateTime(dateString);
// As mentioned above, first entry in the log was the description, and that should not be part
// of the log, so it is removed.
log.RemoveAt(0);
// Created the Entry object, and add it to the entryList.
entryList.Add(new Document.DocumentLog.Entry(user, description, log, time));
}
tr.ReadToEnd();
sr.DiscardBufferedData();
tr.Dispose();
// Finally makes the document to return
finalDoc = Document.CreateDocumentFromFile(did, text, title, modified, deleted, owner, pictures, path, new Document.DocumentLog(entryList));
}
//sr.ReadToEnd();
sr.Dispose();
sr.Close();
object o = sr.GetLifetimeService();
return(finalDoc);
}
catch (FileNotFoundException)
{
Console.WriteLine("No file exists by that name");
return(null);
}
}
