Beispiel #1
0
        public static void GetFirstAndLastFileDates(string fileName,
                out DateTime? dateFirst, out DateTime? dateLast, out bool endsUpNewLine)
        {
            dateFirst = null;
            dateLast = null;
            endsUpNewLine = false;
            if (!File.Exists(fileName)) return;

            using (var sr = new StreamReaderLog(fileName))
            {
                // получить первую строку
                while (!sr.EndOfStream)
                {
                    var line = sr.ReadLine();
                    if (string.IsNullOrEmpty(line)) continue;
                    try
                    {
                        if (!dateFirst.HasValue) dateFirst = DateTime.ParseExact(line, "ddMMyyyy", CultureProvider.Common);
                        else
                        {
                            var parts = line.Split(' ');
                            var nH = int.Parse(parts[0].Substring(0, 2));
                            var nM = int.Parse(parts[0].Substring(2));
                            dateFirst = dateFirst.Value.AddMinutes(nM + nH * 60);
                            break;
                        }
                    }
                    catch
                    {
                        return;
                    }
                }
                if (sr.EndOfStream) return;

                // получить последнюю строку
                var strLast = ReadEndTokens(sr.BaseStream, 1500, Encoding.ASCII, "\n");
                if (!string.IsNullOrEmpty(strLast))
                    if (strLast[strLast.Length - 1] == '\n')
                        endsUpNewLine = true;
                var quoteLines = strLast.Split(new[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);

                int? lastHour = null, lastMin = null;
                for (var i = quoteLines.Length - 1; i >= 0; i--)
                {
                    var quoteLineParts = quoteLines[i].Split(' ');
                    if (quoteLineParts.Length == 3 && lastHour.HasValue == false)
                    {
                        lastHour = int.Parse(quoteLineParts[0].Substring(0, 2));
                        lastMin = int.Parse(quoteLineParts[0].Substring(2));
                        continue;
                    }
                    if (quoteLineParts.Length == 1)
                    {
                        dateLast = DateTime.ParseExact(quoteLines[i], "ddMMyyyy", CultureProvider.Common);
                        if (lastHour.HasValue)
                            dateLast = dateLast.Value.AddMinutes(lastMin.Value + lastHour.Value * 60);
                        break;
                    }
                }
            }
        }
Beispiel #2
0
        public static void GetFirstAndLastFileDates(string fileName,
                                                    out DateTime?dateFirst, out DateTime?dateLast, out bool endsUpNewLine)
        {
            dateFirst     = null;
            dateLast      = null;
            endsUpNewLine = false;
            if (!File.Exists(fileName))
            {
                return;
            }

            using (var sr = new StreamReaderLog(fileName))
            {
                // получить первую строку
                while (!sr.EndOfStream)
                {
                    var line = sr.ReadLine();
                    if (string.IsNullOrEmpty(line))
                    {
                        continue;
                    }
                    try
                    {
                        if (!dateFirst.HasValue)
                        {
                            DateTime lineDate;
                            if (!DateTime.TryParseExact(line, "ddMMyyyy", CultureProvider.Common, DateTimeStyles.None, out lineDate))
                            {
                                Logger.DebugFormat("Файл котировок \"{0}\" - начало повреждено", fileName);
                                continue;
                            }
                            dateFirst = lineDate;
                        }
                        else
                        {
                            var parts = line.Split(' ');
                            var nH    = int.Parse(parts[0].Substring(0, 2));
                            var nM    = int.Parse(parts[0].Substring(2));
                            dateFirst = dateFirst.Value.AddMinutes(nM + nH * 60);
                            break;
                        }
                    }
                    catch
                    {
                        return;
                    }
                }
                if (sr.EndOfStream)
                {
                    return;
                }

                // получить последнюю строку
                var strLast = ReadEndTokens(sr.BaseStream, 1500, Encoding.ASCII, "\n");
                if (!string.IsNullOrEmpty(strLast))
                {
                    if (strLast[strLast.Length - 1] == '\n')
                    {
                        endsUpNewLine = true;
                    }
                }
                var quoteLines = strLast.Split(new[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);

                int?lastHour = null, lastMin = null;
                for (var i = quoteLines.Length - 1; i >= 0; i--)
                {
                    var quoteLineParts = quoteLines[i].Split(' ');
                    if (quoteLineParts.Length == 3 && lastHour.HasValue == false)
                    {
                        lastHour = int.Parse(quoteLineParts[0].Substring(0, 2));
                        lastMin  = int.Parse(quoteLineParts[0].Substring(2));
                        continue;
                    }
                    if (quoteLineParts.Length == 1)
                    {
                        DateTime lineDate;
                        if (!DateTime.TryParseExact(quoteLines[i], "ddMMyyyy",
                                                    CultureProvider.Common, DateTimeStyles.None, out lineDate))
                        {
                            continue;
                        }
                        dateLast = lineDate;
                        if (lastHour.HasValue)
                        {
                            dateLast = dateLast.Value.AddMinutes(lastMin.Value + lastHour.Value * 60);
                        }
                        break;
                    }
                }
            }
        }
        public static DateTime? GetFirstDate(string fileName)
        {
            if (!File.Exists(fileName)) return null;

            DateTime? dateFirst = null;

            using (var sr = new StreamReaderLog(fileName))
            {
                // получить первую строку
                var linesToTryParseMax = 10;
                while (!sr.EndOfStream)
                {
                    linesToTryParseMax--;
                    if (linesToTryParseMax < 0) break;

                    var line = sr.ReadLine();
                    if (string.IsNullOrEmpty(line)) continue;

                    if (line.Length == "ddMMyyyy".Length)
                    {
                        DateTime lineDate;
                        if (DateTime.TryParseExact(line, "ddMMyyyy", CultureProvider.Common, DateTimeStyles.None, out lineDate))
                            dateFirst = lineDate;
                        continue;
                    }

                    if (dateFirst == null) continue;
                    try
                    {
                        var parts = line.Split(' ');
                        if (parts.Length != 3) continue;
                        var hour = parts[0].Substring(0, 2).ToInt();
                        var minute = parts[0].Substring(2).ToInt();
                        dateFirst = dateFirst.Value.AddMinutes(hour*60 + minute);
                        return dateFirst;
                    }
                    catch
                    {
                    }
                }

                return dateFirst;
            }
        }
Beispiel #4
0
        public static DateTime?GetFirstDate(string fileName)
        {
            if (!File.Exists(fileName))
            {
                return(null);
            }

            DateTime?dateFirst = null;

            using (var sr = new StreamReaderLog(fileName))
            {
                // получить первую строку
                var linesToTryParseMax = 10;
                while (!sr.EndOfStream)
                {
                    linesToTryParseMax--;
                    if (linesToTryParseMax < 0)
                    {
                        break;
                    }

                    var line = sr.ReadLine();
                    if (string.IsNullOrEmpty(line))
                    {
                        continue;
                    }

                    if (line.Length == "ddMMyyyy".Length)
                    {
                        DateTime lineDate;
                        if (DateTime.TryParseExact(line, "ddMMyyyy", CultureProvider.Common, DateTimeStyles.None, out lineDate))
                        {
                            dateFirst = lineDate;
                        }
                        continue;
                    }

                    if (dateFirst == null)
                    {
                        continue;
                    }
                    try
                    {
                        var parts = line.Split(' ');
                        if (parts.Length != 3)
                        {
                            continue;
                        }
                        var hour   = parts[0].Substring(0, 2).ToInt();
                        var minute = parts[0].Substring(2).ToInt();
                        dateFirst = dateFirst.Value.AddMinutes(hour * 60 + minute);
                        return(dateFirst);
                    }
                    catch
                    {
                    }
                }

                return(dateFirst);
            }
        }