private void Parse(_InternalData internalData)
{
string prefix = "2/5 Parsing...";
Utils.DrawMessage(prefix, Utils.CreateProgressBar(Utils.ProgressBarLength, 0), ConsoleColor.Gray);
try
{
// Parse only if we have not parsed
if (Reload || !File.Exists(SerializedFile))
{
// Load data
string[] lines = File.ReadAllLines(Path.Combine(Folder, "Products.csv"));
// Count when we update progress bar
int drawEvery = Utils.PercentIntervalByLength(lines.Length);
// Check header
if (lines[0] != "\"Symbol\",\"Name\",\"LastSale\",\"MarketCap\",\"IPOyear\",\"Sector\",\"industry\",\"Summary Quote\",")
{
throw new Exception("Unknown file header");
}
// Parse product names
for (int i = 1; i < lines.Length; ++i)
{
// Get columns
string[] columns = lines[i].Split("\",\"");
// Extract symbol
string tickerSymbol = columns[0];
tickerSymbol = tickerSymbol.Substring(1).Trim();
// Extract name
string name = columns[1];
// Extract market capitalization
string mcStr = columns[3];
double mc = -1;
if (mcStr != "n/a")
{
if (mcStr[0] != '$')
{
throw new Exception("Market capitalization - missin $ symbol (" + i + "," + lines[i].Split(new char[] { ',' })[3] + ")");
}
mcStr = mcStr.Substring(1, mcStr.Length - 1);
if (mcStr.Last() != 'B' && mcStr.Last() != 'M' && !Char.IsDigit(mcStr.Last()))
{
throw new Exception("Market capitalization - not millions, not billions and not normal number (" + i + "," + lines[i].Split(new char[] { ',' })[3] + ")");
}
int multiple = 1;
if (mcStr.Last() == 'B')
{
multiple = 1000000000;
mcStr = mcStr.Substring(0, mcStr.Length - 1);
}
else if (mcStr.Last() == 'M')
{
multiple = 1000000;
mcStr = mcStr.Substring(0, mcStr.Length - 1);
}
mc = double.Parse(mcStr, CultureInfo.InvariantCulture);
mc *= multiple;
}
// Only valid products
if ((new Regex("^[a-zA-Z0-9]*$")).IsMatch(tickerSymbol))
{
// Create new products
_Product p = new _Product();
p.Symbol = tickerSymbol;
p.Name = name;
p.MarketCapitalizationInMillions = mc;
// Add to list
internalData.Products.Add(p);
}
// Update progress bar
if (i % drawEvery == 0)
{
Utils.DrawMessage(prefix, Utils.CreateProgressBar(Utils.ProgressBarLength, (double)i / lines.Length * 100.0), ConsoleColor.Gray);
}
}
// Check some properties
if (internalData.Products.Count < 1000)
{
throw new Exception("There are just " + internalData.Products.Count + " products");
}
int yy = internalData.Products.Select(x => x.Symbol).Where(x => x == "IBM" || x == "JPM" || x == "SNHN").Count();
if (internalData.Products.Select(x => x.Symbol).Where(x => x == "IBM" || x == "JPM" || x == "SNHN").Count() != 3)
{
throw new Exception("Some products are missing");
}
}
}
catch (Exception ex)
{
Console.WriteLine();
Utils.DrawMessage("", ex.Message, ConsoleColor.Red);
Console.WriteLine();
System.Environment.Exit(1);
}
Utils.DrawMessage(prefix, Utils.CreateProgressBar(Utils.ProgressBarLength, 100), ConsoleColor.Green);
Console.WriteLine();
}
private async Task FindStartDate(_InternalData internalData)
{
string prefix = "3/5 Finding first date...";
Utils.DrawMessage(prefix, Utils.CreateProgressBar(Utils.ProgressBarLength, 0), ConsoleColor.Gray);
// Count when we update progress bar
int drawEvery = Utils.PercentIntervalByLength(internalData.Products.Count);
// Basic url
string url = "http://real-chart.finance.yahoo.com/table.csv?s=___&d=0&e=0&f=2100&g=d&a=0&b=0&c=1900&ignore=.csv";
// Destination folder
string targetFolder = Path.Combine(Folder, "ProductsHistory");
// Create folder for product
Directory.CreateDirectory(targetFolder);
// Download
try
{
for (int i = 0; i < internalData.Products.Count; ++i)
{
// Product
_Product p = internalData.Products[i];
// Prepare url
string productUrl = url.Replace("___", p.Symbol);
// Target file
string targetFile = Path.Combine(targetFolder, p.Symbol + ".csv");
// Download if needed
if (Reload || !File.Exists(targetFile))
{
try
{
await Downloader.DownloadFileAsync(productUrl, targetFile, null, null);
}
catch (Exception ex)
{
if (ex.Message == "The remote server returned an error: (404) Not Found.")
{
internalData.Products.RemoveAt(i);
--i;
if (File.Exists(targetFile))
{
File.Delete(targetFile);
}
}
else
{
throw ex;
}
}
}
if (File.Exists(targetFile))
{
// Parse only if we have not parsed
if (Reload || !File.Exists(SerializedFile))
{
// Store start date
string[] lines = File.ReadAllLines(targetFile);
string date = lines.Last().Split(new char[] { ',' })[0];
p.StartDate = DateTime.ParseExact(date, "yyyy-MM-dd", CultureInfo.InvariantCulture);
}
}
// Update progress bar
if (i % drawEvery == 0)
{
Utils.DrawMessage(prefix, Utils.CreateProgressBar(Utils.ProgressBarLength, (double)i / internalData.Products.Count * 100.0), ConsoleColor.Gray);
}
}
}
catch (Exception ex)
{
Console.WriteLine();
Utils.DrawMessage("", ex.Message, ConsoleColor.Red);
Console.WriteLine();
System.Environment.Exit(1);
}
Utils.DrawMessage(prefix, Utils.CreateProgressBar(Utils.ProgressBarLength, 100), ConsoleColor.Green);
Console.WriteLine();
}