/// <summary>
/// Reads the given data of the courses and students and scores and initializes it in a dictionary
/// </summary>
private void ReadData(string fileName)
{
//Keep track on the line number of the file to show which line is broken in the stacktrace
var lineNumber = 0;
try
{
var path = fileName;
//If the path doesn't contain even one path separator it means it is relative path and full path needs to be pointed out
if (!path.Contains(SessionData.PathSeparator))
{
path = SessionData.CurrentPath + SessionData.PathSeparator + fileName;
}
if (File.Exists(path))
{
var lines = new Queue <string>(File.ReadAllLines(path));
while (lines.Count > 0)
{
lineNumber++;
var matches = matcher.Match(lines.Dequeue());
if (matches.Value.Length != 0)
{
var courseName = matches.Groups["courseName"].Value;
var studentName = matches.Groups["userName"].Value;
var scores = matches.Groups["scores"].Value.Split(" ", StringSplitOptions.RemoveEmptyEntries).Select(int.Parse).ToArray();
if (scores.Any(s => s > SoftUniStudent.MaxScoreOnExam || s < 0))
{
OutputWriter.DisplayException(ExceptionMessages.InvalidScoreException);
}
if (scores.Length > SoftUniCourse.NumberOfTasksOnExam)
{
OutputWriter.DisplayException(ExceptionMessages.InvalidNumberOfScoresException);
continue;
}
if (!HasStudent(studentName))
{
students[studentName] = new SoftUniStudent(studentName);
}
if (!HasCourse(courseName))
{
courses[courseName] = new SoftUniCourse(courseName);
}
var student = students[studentName];
var course = courses[courseName];
//The method will also enroll the student in the course class :)
student.EnrollInCourse(course);
student.SetMarkOnCourse(courseName, scores);
}
}
isDataInitialized = true;
OutputWriter.WriteMessageOnNewLine("Data read!");
}
else
{
throw new InvalidPathException();
}
}
catch (FormatException fex)
{
OutputWriter.DisplayException(fex, lineNumber);
}
}
private void ReadData(string fileName)
{
string path = SessionData.currentPath + "\\" + fileName;
if (File.Exists(path))
{
OutputWriter.WriteMessageOnNewLine("Reading data...");
string pattern = @"([A-Z][a-zA-Z#\++]*_[A-Z][a-z]{2}_\d{4})\s+([A-Za-z]+\d{2}_\d{2,4})\s([\s0-9]+)";
Regex rgx = new Regex(pattern);
string[] allInputLines = File.ReadAllLines(path);
for (int line = 0; line < allInputLines.Length; line++)
{
if (!string.IsNullOrEmpty(allInputLines[line]) && rgx.IsMatch(allInputLines[line]))
{
Match currentMatch = rgx.Match(allInputLines[line]);
string courseName = currentMatch.Groups[1].Value;
string username = currentMatch.Groups[2].Value;
string scoresStr = currentMatch.Groups[3].Value;
try
{
int[] scores = scoresStr.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries)
.Select(int.Parse)
.ToArray();
if (scores.Any(x => x > 100 || x < 0))
{
OutputWriter.DisplayException(ExceptionMessages.InvalidScore);
continue;
}
if (scores.Length > SoftUniCourse.NumberOfTasksOnExam)
{
OutputWriter.DisplayException(ExceptionMessages.InvalidNumberOfScores);
continue;
}
if (!this.Students.ContainsKey(username))
{
this.students.Add(username, new SoftUniStudent(username));
}
if (!this.Courses.ContainsKey(courseName))
{
this.courses.Add(courseName, new SoftUniCourse(courseName));
}
SoftUniCourse course = this.Courses[courseName];
SoftUniStudent student = this.Students[username];
student.EnrollInCourse(course);
student.SetMarkOnCourse(courseName, scores);
course.EnrollStudent(student);
}
catch (Exception ex)
{
OutputWriter.DisplayException(ex.Message + $"at line : {line}");
}
}
}
this.isDataInitialized = true;
OutputWriter.WriteMessageOnNewLine("Data read!");
}
else
{
throw new InvalidPathException();
}
}
