/// <summary>
/// Fill a collection of tasks by loading the content of a file
/// </summary>
public void LoadFromFile(string file)
{
//read the file line by line and gather these lines into groups
String separator = GetTaskSeparator();
_allTasks.Clear();
StringBuilder currentGroup = null;
List <StringBuilder> listOfGroups = new List <StringBuilder>();
using (StreamReader reader = new StreamReader(file))
{
while (!reader.EndOfStream)
{
String line = reader.ReadLine();
if ((line == separator) || (currentGroup == null)) //begin of new group, add this group in the list
{
currentGroup = new StringBuilder();
listOfGroups.Add(currentGroup);
}
//add the line to the current group
currentGroup.AppendLine(line);
}
}
//convert each group of lines into tasks and add them into the collection
TaskToStringConvertor convertor = new TaskToStringConvertor();
foreach (StringBuilder sb in listOfGroups)
{
TaskToDo task = convertor.StringToTask(sb.ToString());
_allTasks.Add(task);
}
}
/// <summary>
/// Save the current collection to a text file
/// </summary>
/// <param name="fileName"></param>
public void SaveToFile(string fileName)
{
String separator = GetTaskSeparator();
using (StreamWriter writer = new StreamWriter(fileName, false))
{
TaskToStringConvertor convertor = new TaskToStringConvertor();
foreach (TaskToDo task in _allTasks)
{
writer.WriteLine(separator);
writer.WriteLine(convertor.TaskToString(task));
writer.WriteLine(); //empty line
}
}
}