public static bool TryParseTimestampWithMonthName(ParserContext ctx)
{
if (ctx.Text.Length < ctx.Position + 20)
{
return(false);
}
var tsStr = ctx.Text.Substring(ctx.Position, 35);
if (tsStr.StartsWith(": "))
{
tsStr = tsStr.Substring(2);
}
if (tsStr.Contains("/"))
{
return(false);
}
var words = tsStr.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
if (words.Length < 4)
{
return(false);
}
string year = null;
string month = null;
string day = null;
string time = null;
string tz = null;
var y = DateTime.UtcNow.Year;
var thisYear = y.ToString();
var prevYear = (y - 1).ToString();
string lastWord = null;
// Take first 5 words and try to understand what it is
for (int i = 0; i < 5; i++)
{
if (i >= words.Length)
{
break;
}
var word = words[i];
if (word == thisYear || word == prevYear)
{
year = word;
}
else if (word.Length == 3 && _months.Contains(word.ToUpperInvariant()))
{
month = word;
}
else if (word.Length < 3 && int.TryParse(word, out var iDay))
{
day = word;
}
else if (word.Contains(":") && word.Split(':').Length == 3)
{
time = word;
lastWord = word;
}
else if (word.Length == 4 && word.EndsWith(":"))
{
var w3 = word.Substring(0, 3).ToUpperInvariant();
if (_timezones.Contains(w3))
{
tz = w3;
lastWord = word;
break; //for loop
}
}
}
// check if we have enough - at least month, day and time
if (month == null || day == null || time == null)
{
return(false);
}
if (year == null)
{
year = GuessYear(month).ToString();
}
ctx.Entry.Header.Timestamp = ConstructDateTime(year, month, day, time, tz);
// advance position
ctx.Position = ctx.Text.IndexOf(lastWord, ctx.Position) + lastWord.Length;
return(true);
}
