Module:Citation/CS1/Date validation: Difference between revisions
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month2 = get_month_number (month2); | month2 = get_month_number (month2); | ||
elseif date_string:match("^%a+ +[1-9]%d? – %a+ +[1-9]%d?, +[1-9]%d%d%d%a?$") then -- month initial month-day-range: month day – month day, year; uses spaced endash | elseif date_string:match("^%a+ +[1-9]%d? – %a+ +[1-9]%d?, +[1-9]%d%d%d?%a?$") then -- month initial month-day-range: month day – month day, year; uses spaced endash | ||
month, day, month2, day2, anchor_year, year=date_string:match("(%a+) +(%d%d?) – (%a+) +(%d%d?), +((%d%d%d%d)%a?)"); | month, day, month2, day2, anchor_year, year=date_string:match("(%a+) +(%d%d?) – (%a+) +(%d%d?), +((%d%d%d%d)%a?)"); | ||
if (not is_valid_month_season_range(month, month2)) or not is_valid_year(year) then return false; end | if (not is_valid_month_season_range(month, month2)) or not is_valid_year(year) then return false; end | ||
month = get_month_number (month); | month = get_month_number (month); | ||
month2 = get_month_number (month2); | month2 = get_month_number (month2); | ||
elseif date_string:match("^[1-9]%d? +%a+ +[1-9]%d%d%d – [1-9]%d? +%a+ +[1-9]%d%d%d%a?$") then -- day initial month-day-year-range: day month year - day month year; uses spaced endash | |||
day, month, year, day2, month2, anchor_year, year2=date_string:match("(%d%d?) +(%a+) +(%d%d%d%d?) – (%d%d?) +(%a+) +((%d%d%d%d?)%a?)"); | |||
if tonumber(year2) <= tonumber(year) then return false; end -- must be sequential years, left to right, earlier to later | |||
if not is_valid_year(year2) then return false; end -- year2 no more than one year in the future | |||
month = get_month_number (month); | |||
month2 = get_month_number (month2); | |||
elseif date_string:match("^%a+ +[1-9]%d?, +[1-9]%d%d%d – %a+ +[1-9]%d?, +[1-9]%d%d%d%a?$") then -- month initial month-day-year-range: month day, year – month day, year; uses spaced endash | |||
month, day, year, month2, day2, anchor_year, year2=date_string:match("(%a+) +(%d%d?), +(%d%d%d%d) – (%a+) +(%d%d?), +((%d%d%d%d)%a?)"); | |||
if tonumber(year2) <= tonumber(year) then return false; end -- must be sequential years, left to right, earlier to later | |||
if not is_valid_year(year2) then return false; end -- year2 no more than one year in the future | |||
month = get_month_number (month); | |||
month2 = get_month_number (month2); | |||
elseif date_string:match("^Winter +[1-9]%d%d%d–%d%d%a?$") then -- special case Winter year-year (YYYY-YY); year separated with unspaced endash | |||
local century; | |||
year, century, anchor_year, year2=date_string:match("Winter +((%d%d)%d%d)–((%d%d)%a?)"); | |||
anchor_year=year..'–'..anchor_year; -- assemble anchor_year from both years | |||
year2 = century..year2; -- add the century to year2 for comparisons | |||
if 1 ~= tonumber(year2) - tonumber(year) then return false; end -- must be sequential years, left to right, earlier to later | |||
if not is_valid_year(year2) then return false; end -- no year farther in the future than next year | |||
elseif date_string:match("^Winter +[1-9]%d%d%d–[1-9]%d%d%d%a?$") then -- special case Winter year-year; year separated with unspaced endash | elseif date_string:match("^Winter +[1-9]%d%d%d–[1-9]%d%d%d%a?$") then -- special case Winter year-year; year separated with unspaced endash | ||