public void SetNewsFileName(string fileName)
{
if (string.IsNullOrEmpty(fileName))
{
return;
}
robotNews = RobotNews.LoadFromFile(fileName);
AddPendingMessage(string.Format("Прочитано новостей: {0} из {1}", robotNews.Count, fileName));
}
private void SaveNewsButtonClick(object sender, EventArgs e)
{
var saveFileDialog = new SaveFileDialog();
saveFileDialog.Filter = "Текстовый файл (*.txt)|*.txt";
if (saveFileDialog.ShowDialog(MainForm.Instance) == DialogResult.Cancel)
{
return;
}
RobotNews.SaveToFile(saveFileDialog.FileName, robotNews);
}
public static List<RobotNews> GrabNews(DateTime dateTime, out List<string> error)
{
var result = new List<RobotNews>();
error = new List<string>();
var startdt = DateTime.Parse("01/01/1970");
var requestDate = dateTime.Date;
var span = requestDate.Subtract(startdt);
var secs = span.TotalSeconds;
var myWebRequest =
WebRequest.Create("http://www.alpari.ru/ru/analytics/calendar/data/list/?lang=ru&timeZone=4&time=" +
secs);
var myWebResponse = myWebRequest.GetResponse();
if (myWebResponse == null)
{
error.Add(DateTime.Now + ": server not responding (WebRequest.GetResponse() = null)");
return result;
}
var stream = myWebResponse.GetResponseStream();
if (stream == null)
{
error.Add(DateTime.Now + ": internal error (WebResponse.GetResponseStream() = null)");
return result;
}
string srcStr;
using (var sr = new StreamReader(stream, Encoding.UTF8))
srcStr = sr.ReadToEnd();
stream.Close();
var rowPos = 0;
while (true)
{
var row = GetTagData(srcStr, "tr", ref rowPos);
if (row == null)
break;
var news = new RobotNews();
var addNews = true;
var cellPos = 0;
for (var column = 0; column < 7; column++)
{
var cell = GetTagData(row, "td", ref cellPos);
if (cell == null)
{
error.Add(string.Format("news parse error at {0}: incomplete data ({1})", requestDate, news));
addNews = false;
break;
}
cellPos += cell.Length;
var internalPos = 0;
var txt = GetTagData(cell, "div", ref internalPos);
if (txt != null)
cell = txt;
internalPos = 0;
txt = GetTagData(cell, "strong", ref internalPos);
if (txt != null)
{
cell = txt;
news.Valuable = true;
}
var completeText = GetTagText(cell).Trim();
double? value;
if (completeText == "") // skip empty cells
{
addNews = false;
continue;
}
switch (column)
{
case 0:
if (completeText.Contains("–")) // skip date period
addNews = false;
else
try
{
news.Time = requestDate + TimeSpan.Parse(completeText);
}
catch // (Exception e)
{
//Console.WriteLine("{0}\n{1}\n{2}", e, completeText, cell);
error.Add(string.Format("news parse error at {0}: bad date format ({1}, {2})",
requestDate, completeText, news));
addNews = false;
continue;
}
break;
case 1:
news.CountryCode = completeText;
break;
case 2:
news.Title = completeText;
break;
case 5:
if (completeText == "—")
addNews = false;
else
{
value = GetFirstWordAsDouble(completeText);
if (value == null)
{
error.Add(string.Format("news parse error at {0}: bad number format ({1}, {2})",
requestDate, completeText, news));
addNews = false;
}
else
news.ProjectedValue = value.Value;
}
break;
case 6:
if (completeText == "—")
addNews = false;
else
{
value = GetFirstWordAsDouble(completeText);
if (value == null)
{
error.Add(string.Format("news parse error at {0}: bad number format ({1}, {2})",
requestDate, completeText, news));
addNews = false;
}
else
news.Value = value.Value;
}
break;
}
}
if (addNews)
result.Add(news);
rowPos += row.Length;
}
return result;
}
