public async void Process(ProcessorParams.Convertor conv)
{
stopRequested = false;
isComplete = false;
using (StreamWriter writer = File.CreateText(destFileName))
{
using (StreamReader reader = File.OpenText(sourceFileName))
{
await ConvertAsync(conv, writer, reader);
reader.Close();
}
writer.Close();
}
isComplete = true;
}
/// <summary>
/// Обработчик
/// </summary>
/// <param name="conv">ProcessorParams.Convertor -предикат обработки</param>
/// <param name="writer">StreamWriter</param>
/// <param name="reader">StreamReader </param>
/// <returns>Task - запущена асинхронная задача</returns>
private Task ConvertAsync(ProcessorParams.Convertor conv, StreamWriter writer, StreamReader reader)
{
var task = new Task(() =>
{
int index = 0;
int count = 0;
int lines = 0;
string currentLine = string.Empty;
string tail = string.Empty; //хвост, последнее слово;
do
{
char[] buffer = new char[bufferSize];
count = reader.Read(buffer, 0, bufferSize);
currentLine = tail + (new string(buffer, 0, count));
index = currentLine.LastIndexOf('\n');
if (index > 0)
{
tail = currentLine.Substring(index + 1);
currentLine = currentLine.Substring(0, index);
}
else
{
tail = string.Empty;
}
foreach (string line in currentLine.Split('\n'))
{
writer.WriteLine(conv(line));
}
onProgress(string.Format("Файл:{0},результат {1}, строк обработано:{2}"
, this.sourceFileName, this.destFileName, ++lines));
if (stopRequested)
{
return;
}
} while (count > 0);
});
task.Start();
return(task);
}
