private static string GetPattern(EnumLanguage language = EnumLanguage.NONE)
{
string pattern = "";
switch (language)
{
case EnumLanguage.IT:
// ^(?:(?:Intorno\sal|circa)\s)?(?<yearMin>\d{2,})(?:\s*[\;\-\/]\s*)(?<yearMax>\d{1,2})(?:\s(?<suffix>a\.?C\.?|d\.?C\.?))?$
pattern = String.Concat(
START, // ^
maybe(DateCirca.Pattern(language) + SPACE), // (?:(?:Intorno\sal|circa)\s)?
group(@"\d{4,}", "yearMin"), // (?<yearMin>\d{2,})
@"\s*[\;\-\/]\s*", // separators
group(@"\d{1,2}", "yearMax"), // (?<yearMax>\d{1,2})
maybe(SPACE + DateSuffix.Pattern(language, "suffix")), // (?:\s(?<suffix>a\.?C\.?|d\.?C\.?))?
END
);
break;
default:
// ^(?:(?:C(?:\.|irca)|around|approx(?:\.|imately))\s)?(?<yearMin>\d{2,})(?:\s*[\;\-\/]\s*)(?<yearMax>\d{1,2})(?:\s(?<suffix>AD|BC|BP|CE))?$
pattern = String.Concat(
START, // ^
maybe(DateCirca.Pattern(language) + SPACE), // (?:(?:C(?:\.|irca)|around|approx(?:\.|imately))\s)?
group(@"\d{4,}", "yearMin"), // (?<yearMin>\d{2,})
@"\s*[\;\-\/]\s*", // separators
group(@"\d{1,2}", "yearMax"), // (?<yearMax>\d{1,2})
maybe(SPACE + DateSuffix.Pattern(language, "suffix")), // (?:\s(?<suffix>AD|BC|BP|CE))?
END
);
break;
}
return(pattern);
}
// input: "1521-7" or "1521/7" or "c.1521/7 AD" or "1521-27 AD"
// output: { min: 1521, max: 1527, label: "1521/7" }
public static IYearSpan Match(string input, EnumLanguage language = EnumLanguage.NONE)
{
Match m = Regex.Match(input.Trim(), Pattern(language), options);
if (!m.Success)
{
return(null);
}
int yearMin = 0;
int yearMax = 0;
int.TryParse(m.Groups["yearMin"].Value, out yearMin);
int.TryParse(m.Groups["yearMax"].Value, out yearMax);
if (yearMax <= 9)
{
yearMax = yearMin - (yearMin % 10) + yearMax;
}
else
{
yearMax = yearMin - (yearMin % 100) + yearMax;
}
EnumDateSuffix suffix = m.Groups["suffix"] != null?DateSuffix.Match(m.Groups["suffix"].Value, language) : EnumDateSuffix.NONE;
switch (suffix)
{
case EnumDateSuffix.BC:
yearMin *= -1;
yearMax *= -1;
break;
case EnumDateSuffix.BP:
yearMin = PRESENT - yearMin;
yearMax = PRESENT - yearMax;
break;
}
return(new YearSpan(yearMin, yearMax, input, "RxShortMaxYear"));
}