public static void GetAllStudentsFromCourse(string courseName)
{
if (IsQueryForCoursePossible(courseName))
{
OutputWriter.WriteMessageOnNewLIne($"{courseName}:");
foreach (var studentMarksEntry in studentsByCourse[courseName])
{
OutputWriter.PrintStudent(studentMarksEntry);
}
}
}
public static void InitializeData(string fileName)
{
if (!isDataInitialized)
{
OutputWriter.WriteMessageOnNewLIne("Reading data...");
studentsByCourse = new Dictionary <string, Dictionary <string, List <int> > >();
ReadData(fileName);
}
else
{
OutputWriter.WriteMessageOnNewLIne(ExceptionMessages.DataAlreadyInitialisedException);
}
}
private static void TryGetHelp()
{
OutputWriter.WriteMessageOnNewLIne($"{new string('_', 100)}");
OutputWriter.WriteMessageOnNewLIne(string.Format("|{0, -98}|", "make directory - mkdir path "));
OutputWriter.WriteMessageOnNewLIne(string.Format("|{0, -98}|", "traverse directory - ls depth "));
OutputWriter.WriteMessageOnNewLIne(string.Format("|{0, -98}|", "comparing files - cmp path1 path2"));
OutputWriter.WriteMessageOnNewLIne(string.Format("|{0, -98}|", "change directory - cdRel relative path"));
OutputWriter.WriteMessageOnNewLIne(string.Format("|{0, -98}|", "change directory - cdAbs absolute path"));
OutputWriter.WriteMessageOnNewLIne(string.Format("|{0, -98}|", "read students data base - readDb path"));
OutputWriter.WriteMessageOnNewLIne(string.Format("|{0, -98}|", "filter {courseName} excelent/average/poor take 2/5/all students - filterExcelent (the output is written on the console)"));
OutputWriter.WriteMessageOnNewLIne(string.Format("|{0, -98}|", "order increasing students - order {courseName} ascending/descending take 20/10/all (the output is written on the console)"));
OutputWriter.WriteMessageOnNewLIne(string.Format("|{0, -98}|", "download file - download: path of file (saved in current directory)"));
OutputWriter.WriteMessageOnNewLIne(string.Format("|{0, -98}|", "download file asinchronously - downloadAsynch: path of file (save in the current directory)"));
OutputWriter.WriteMessageOnNewLIne(string.Format("|{0, -98}|", "get help – help"));
OutputWriter.WriteMessageOnNewLIne($"{new string('_', 100)}");
OutputWriter.WriteEmptyLine();
}
private static void ReadData(string fileName)
{
string path = SessionData.currentPath + "\\" + fileName;
if (File.Exists(path))
{
string pattern = @"([A-Z][a-zA-Z#+]*_[A-Z][a-z]{2}_\d{4})\s+([A-Z][a-z]{0,3}\d{2}_\d{2,4})\s+(\d+)";
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 course = currentMatch.Groups[1].Value;
string student = currentMatch.Groups[2].Value;
int studentScoreOnTask;
bool hasParsedScore = int.TryParse(currentMatch.Groups[3].Value, out studentScoreOnTask);
if (hasParsedScore && studentScoreOnTask >= 0 && studentScoreOnTask <= 100)
{
if (!studentsByCourse.ContainsKey(course))
{
studentsByCourse.Add(course, new Dictionary <string, List <int> >());
}
if (!studentsByCourse[course].ContainsKey(student))
{
studentsByCourse[course].Add(student, new List <int>());
}
studentsByCourse[course][student].Add(studentScoreOnTask);
}
}
}
}
else
{
OutputWriter.DisplayException(ExceptionMessages.InvalidPath);
}
isDataInitialized = true;
OutputWriter.WriteMessageOnNewLIne("Data read!");
}
private static string[] GetLinesWithPossibleMismatches(string[] actualOutputLines, string[] expectedOutputLines, out bool hasMismatch)
{
hasMismatch = false;
string output = string.Empty;
OutputWriter.WriteMessageOnNewLIne("Comparing files...");
int minOutputLines = actualOutputLines.Length;
if (actualOutputLines.Length != expectedOutputLines.Length)
{
hasMismatch = true;
minOutputLines = Math.Min(actualOutputLines.Length, expectedOutputLines.Length);
OutputWriter.DisplayException(ExceptionMessages.ComparisonOfFilesWithDifferentSizes);
}
string[] mismatches = new string[minOutputLines];
for (int index = 0; index < minOutputLines; index++)
{
string actualLine = actualOutputLines[index];
string expectedLine = expectedOutputLines[index];
if (!actualLine.Equals(expectedLine))
{
output = string.Format("Mismatch at line {0} -- expected: \"{1}\", actual: \"{2}\"", index,
expectedLine, actualLine);
output += Environment.NewLine;
hasMismatch = true;
}
else
{
output = actualLine;
output += Environment.NewLine;
}
mismatches[index] = output;
}
return(mismatches);
}
public static void TraverseDirectory(int depth)
{
OutputWriter.WriteEmptyLine();
int initialIdentation = SessionData.currentPath.Split('\\').Length;
Queue <string> subFolders = new Queue <string>();
subFolders.Enqueue(SessionData.currentPath);
while (subFolders.Count != 0)
{
string currentPath = subFolders.Dequeue();
int identation = currentPath.Split('\\').Length - initialIdentation;
OutputWriter.WriteMessage(currentPath);
try
{
foreach (var file in Directory.GetFiles(currentPath))
{
int indexOfLastSlash = file.LastIndexOf("\\");
string fileName = file.Substring(indexOfLastSlash);
OutputWriter.WriteMessageOnNewLIne(new string('-', indexOfLastSlash) + fileName);
}
foreach (var directoryPath in Directory.GetDirectories(currentPath))
{
subFolders.Enqueue(directoryPath);
}
}
catch (UnauthorizedAccessException)
{
OutputWriter.DisplayException(ExceptionMessages.UnauthorizedAccessExceptionMessage);
}
OutputWriter.WriteMessageOnNewLIne(string.Format("{0}{1}", new string('-', identation), currentPath));
if (depth - identation < 0)
{
break;
}
}
}
public static void CompareContent(string userOutputPath, string expectedOutputPath)
{
OutputWriter.WriteMessageOnNewLIne("Reading files...");
try
{
string mismatchPath = GetMismatchPath(expectedOutputPath);
string[] actualOutputLines = File.ReadAllLines(userOutputPath);
string[] expectedOutputLines = File.ReadAllLines(expectedOutputPath);
bool hasMismatch;
string[] mismatches =
GetLinesWithPossibleMismatches(actualOutputLines, expectedOutputLines, out hasMismatch);
PrintOutput(mismatches, hasMismatch, mismatchPath);
OutputWriter.WriteMessageOnNewLIne("Files read!");
}
catch (FileNotFoundException)
{
OutputWriter.DisplayException(ExceptionMessages.InvalidPath);
}
}
private static void PrintOutput(string[] mismatches, bool hasMismatch, string mismatchPath)
{
if (hasMismatch)
{
foreach (var line in mismatches)
{
OutputWriter.WriteMessageOnNewLIne(line);
}
try
{
File.WriteAllLines(mismatchPath, mismatches);
}
catch (DirectoryNotFoundException)
{
OutputWriter.DisplayException(ExceptionMessages.InvalidPath);
}
return;
}
OutputWriter.WriteMessageOnNewLIne("Files ara identical. There are no mismatches.");
}
public static void PrintStudent(KeyValuePair <string, List <int> > student)
{
OutputWriter.WriteMessageOnNewLIne(String.Format($"{student.Key} - {string.Join(", ", student.Value)}"));
}