Exemplo n.º 1
0
        SymbolData GetSymbolDataOffline(string symbol)
        {
            SymbolData data = null;

            try
            {
                using (var zstream = GetResourceStream(symbol + ".csv.zip"))
                {
                    if (zstream != null)
                    {
                        using (var zip = new C1ZipFile(zstream))
                        {
                            using (var stream = zip.Entries[0].OpenReader())
                            {
                                using (var sr = new StreamReader(stream))
                                {
                                    data = LoadQuote(sr.ReadToEnd());
                                }
                            }
                        }
                    }
                }
            }
            catch
            {
            }

            return(data);
        }
Exemplo n.º 2
0
        void CacheQuote(string symbol, SymbolData quote)
        {
            try
            {
                if (!Directory.Exists(CACHE_DIR))
                {
                    Directory.CreateDirectory(CACHE_DIR);
                }

                var fi = new FileInfo(GetCacheFileName(symbol));
                using (var sw = fi.CreateText())
                {
                    for (var i = quote.Count - 1; i >= 0; i--)
                    {
                        var q = quote[i];
                        sw.WriteLine(string.Format("{0},{1},{2},{3},{4},{5}",
                                                   q.Date.ToString("yyyy-MM-dd", System.Globalization.CultureInfo.InvariantCulture),
                                                   q.Open, q.High, q.Low, q.Close, q.Volume));
                    }
                }
            }
            catch
            {
            }
        }
Exemplo n.º 3
0
        void GetSymbolDataOnlineAsync(string symbol, Action <string, SymbolData> action)
        {
            SymbolData data = null;

            using (var wc = new WebClient())
            {
                wc.DownloadStringCompleted += (s, e) =>
                {
                    if (e.Error == null)
                    {
                        try
                        {
                            data = LoadQuote(e.Result);
                        }
                        catch
                        {
                            data = null;
                        }
                    }
                    else
                    {
                        Online = false;
                    }

                    if (data == null)
                    {
                        data = GetSymbolDataOffline(symbol);
                    }
                    else
                    {
                        CacheQuote(symbol, data);
                    }

                    action(symbol, data);
                };

                try
                {
                    wc.DownloadStringAsync(new Uri(string.Format(SERVICE_URL, symbol)));
                }
                catch
                {
                    Online = false;
                    data   = GetSymbolDataOffline(symbol);
                    action(symbol, data);
                }
            }
        }
Exemplo n.º 4
0
        public void GetSymbolDataAsync(string symbol, Action <string, SymbolData> action, bool loadEvents = true)
        {
            SymbolData data = null;

            // try app cache
            if (_quotes.TryGetValue(symbol, out data))
            {
                action(symbol, data);
            }
            else
            {
                // try file cache
                data = GetSymbolDataCache(symbol);

                if (data != null)
                {
                    action(symbol, data);
                }
                else
                {
                    if (Online)
                    {
                        GetSymbolDataOnlineAsync(symbol, (s, d) =>
                        {
                            action(s, d);
                            if (loadEvents)
                            {
                                LoadEvents(s, d);
                            }
                        });
                    }
                    else
                    {
                        data = GetSymbolDataOffline(symbol);
                        action(symbol, data);
                    }
                }
            }
            if (loadEvents)
            {
                LoadEvents(symbol, data);
            }
        }
Exemplo n.º 5
0
        SymbolData GetSymbolDataCache(string symbol)
        {
            SymbolData data = null;

            try
            {
                var fi = new FileInfo(GetCacheFileName(symbol));
                if (fi.Exists && (DateTime.Today - fi.LastWriteTime).Days <= 1)
                {
                    using (var sr = fi.OpenText())
                    {
                        data = LoadQuote(sr.ReadToEnd());
                    }
                }
            }
            catch
            {
            }

            return(data);
        }
Exemplo n.º 6
0
        SymbolData LoadQuote(string s, bool skipHeader = true)
        {
            var data = new SymbolData();

            var ss = s.Split(new string[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);

            for (var i = skipHeader ? 1 : 0; i < ss.Length; i++)
            {
                var q = new Quote(data);
                q.Read(ss[i]);

                if (q.Date.Year >= YEAR0)
                {
                    data.Add(q);
                }
            }

            if (data != null && data.Count > 1 && data[0].Date > data[data.Count - 1].Date)
            {
                data.Reverse();
            }

            return(data);
        }
Exemplo n.º 7
0
        void LoadEvents(string symbol, SymbolData data)
        {
            if (data == null || data.Count == 0)
            {
                return;
            }

            var url = string.Format(NEWS_URL, symbol);

            using (var wc = new WebClient())
            {
                wc.DownloadStringCompleted += (s, e) =>
                {
                    if (e.Error == null)
                    {
                        try
                        {
                            var doc = new XmlDocument();
                            doc.LoadXml(e.Result);

                            var items = doc.GetElementsByTagName("item");
                            // read each line
                            foreach (XmlNode item in items)
                            {
                                var dt   = DateTime.Parse(item["pubDate"].InnerText);
                                var text = item["title"].InnerText;

                                var quote = data.FirstOrDefault(q => (q.Date - dt).Days == 0);

                                if (quote != null)
                                {
                                    if (quote.Events != null)
                                    {
                                        if (quote.Events.Length > 0)
                                        {
                                            quote.Events += Environment.NewLine;
                                        }
                                        quote.Events += text;
                                    }
                                    else
                                    {
                                        quote.Events = text;
                                    }
                                }
                            }

                            OnNewsLoaded();
                        }
                        catch
                        {
                        }
                    }
                };
                try
                {
                    wc.DownloadStringAsync(new Uri(url));
                }
                catch
                {
                }
            }
        }
Exemplo n.º 8
0
 public Quote(SymbolData parent)
 {
     _parent = parent;
 }