/// <summary>
/// Handler for button, Moves stream to end -1 line
/// </summary>
private void Move_to_end_Click(object sender, EventArgs e)
{
if (stream_exists == true)
{
Stream_controler.Move_Stream(stream_container, (int)MoveMode.End);
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// <summary>
/// Handler for button, Moves stream to start
/// </summary>
private void Move_to_start_Click_1(object sender, EventArgs e)
{
if (stream_exists == true)
{
Stream_controler.Move_Stream(stream_container, (int)MoveMode.Start);
}
}
/// <summary>
/// Handler open file dialog, creates stream and it's reader
/// </summary>
private void openFileDialog1_FileOk_1(object sender, CancelEventArgs e)
{
stream_container = new Streams_Container();
stream_container.stream_reader = Stream_controler.Create_Reader(openFileDialog1.FileName);
stream_container.base_stream = Stream_controler.Get_Base_Stream(stream_container.stream_reader);
stream_container.input_file_path = openFileDialog1.FileName;
stream_exists = true;
}
private void saveFileDialog1_FileOk(object sender, CancelEventArgs e)
{
string save_path;
save_path = saveFileDialog1.FileName;
if (save_path != null)
{
stream_container.stream_writer = new StreamWriter(save_path);
Stream_controler.Generate_log(stream_container, input_filename);
}
}
/// <summary>
/// Handler for button, Shows current line
/// </summary>
private void Move_by_amount_Click(object sender, EventArgs e)
{
if (stream_exists == true)
{
try
{
amount = Convert.ToInt16(textBox_amount.Text);
Stream_controler.Move_Stream(stream_container, (int)MoveMode.Amount, amount);
}
catch
{
}
}
}
/*
* /// <summary>
* /// Iterates through whole file and counts number of lines in it (Resets stream to origin)
* /// </summary>
* public static int Get_line_lenght(Streams_Container s_container)
* {
* int lenght = 0;
*
* s_container = Move_Stream(s_container, (int)MoveMode.Start);
*
* while(s_container.stream_reader.ReadLine()!=null)
* {
* lenght++;
* }
*
* return lenght;
* }
*/
public static void Generate_log(Streams_Container sc, string filename)
{
StreamWriter sw = sc.stream_writer;
string line;
long length = new System.IO.FileInfo((sc.input_file_path)).Length;
sw.WriteLine("Big Data reader log");
sw.WriteLine("Filename: " + filename);
sw.WriteLine();
sw.WriteLine(length);
sw.WriteLine();
sw.WriteLine("First 20 lines: ");
sw.WriteLine();
Stream_controler.Move_Stream(sc, (int)MoveMode.Start);
for (int i = 0; i < 20; i++)
{
sw.WriteLine(sc.stream_reader.ReadLine());
}
sw.WriteLine();
sw.WriteLine("Last 20 lines: ");
sw.WriteLine();
Stream_controler.Move_Stream(sc, (int)MoveMode.End);
for (int i = 0; i < 20; i++)
{
line = sc.stream_reader.ReadLine();
if (line == null)
{
break;
}
sw.WriteLine(line);
}
sw.WriteLine();
sw.WriteLine("End of log");
sw.Flush();
sw.Close();
}
