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模块:Citation/CS1/Date validation

移除 10,885 位元組, 3 年前
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local p = {}
 --[[--------------------------< F O R W A R D D E C L A R A T I O N S >--------------------------------------]] local is_set, in_array; -- imported functions from selected Module:Citation/CS1/Utilitieslocal cfg; -- table of tables imported from slected Module:Citation/CS1/Configuration --[=[-------------------------< I S _ V A L I D _ A C C E S S D A T E >----------------------------------------
returns true if:
adding 24 hours gives 2015-01-03T00:00:00 – one second more than tomorrow
This function does not work if it is fed month names for languages other than English. Wikimedia #time: parserapparently doesn't understand non-Engish date month names. This function will always return false when the datecontains a non-English month name because good1 is false after the call to lang.formatDate(). To get around thatcall this function with YYYY-MM-DD format dates. ]=]
local function is_valid_accessdate (accessdate)
local access_ts, tomorrow_ts; -- to hold unix time stamps representing the dates
accessdate = accessdate:gsub("年", "-");
accessdate = accessdate:gsub("月", "-");
accessdate = accessdate:gsub("日", "-");
accessdate = accessdate:gsub("-$", "");
good1, access_ts = pcall( lang.formatDate, lang, 'U', accessdate ); -- convert accessdate value to unix timesatmp
good2, tomorrow_ts = pcall( lang.formatDate, lang, 'U', 'today + 2 days' ); -- today midnight + 2 days is one second more than all day tomorrow
if good1 and good2 then -- lang.formatDate() returns a timestamp in the local script which which tonumber() may not understand access_ts = tonumber (access_ts) or lang:parseFormattedNumber (access_ts); -- convert to numbers for the comparison; tomorrow_ts = tonumber (tomorrow_ts) or lang:parseFormattedNumber (tomorrow_ts);
else
return false; -- one or both failed to convert to unix time stamp
end
if 979516800 <= access_ts and access_ts < tomorrow_ts then -- Wikipedia start date <= accessdate < tomorrow's date
return true;
end
end
 
--[[--------------------------< G E T _ M O N T H _ N U M B E R >----------------------------------------------
local function get_month_number (month)
return cfg.date_nameslocal long_months = {['January']=1, ['February']=2, ['March']=3, ['April']=4, ['May']=5, ['June']=6, ['July']=7, ['August']=8, ['September']=9, ['October']=10, ['November']=11, ['December']=12};localshort_months = {['Jan']=1, ['Feb']=2, ['Mar']=3, ['Apr']=4, ['May']=5, ['Jun']=6, ['Jul'].long=7, ['Aug']=8, ['Sep']=9, ['Oct']=10, [month'Nov'] or cfg.date_names=11, ['Dec']=12};localzh_months = {['1月']=1, ['2月']=2, ['3月']=3, ['4月']=4, ['5月']=5, ['6月']=6, ['7月'].short=7, ['8月']=8, ['9月']=9, ['10月']=10, ['11月']=11, [month'12月'] or =12}; -- look for LOCALlocal names firsttemp; cfg.date_names temp=long_months['en'month].; if temp then return temp; end -- if month is the long-form name temp=short_months[month] or cfg.date_names['en'].; if temp then return temp; end -- if month is the short-form name temp=zh_months[month] or ; -- failing that, look for English namesLOCAL if temp then return temp; end -- if month is in Chinese -- LOCAL return 0; -- misspelled, improper case, or not a recognized month name
end
 
 
--[[--------------------------< I S _ V A L I D _ E M B A R G O _ D A T E >------------------------------------
 
returns true and date value if that value has proper dmy, mdy, ymd format.
 
returns false and 9999 (embargoed forever) when date value is not proper format; assumes that when |embargo= is
set, the editor intended to embargo a pmc but |embargo= does not hold a single date.
 
]]
 
local function is_valid_embargo_date (v)
if v:match ('^%d%d%d%d%-%d%d%-%d%d$') or -- ymd
v:match ('^%d%d?%s+%a+%s+%d%d%d%d$') or -- dmy
v:match ('^%a+%s+%d%d?%s*,%s*%d%d%d%d$') then -- mdy
return true, v;
end
return false, '9999'; -- if here not good date so return false and set embargo date to long time in future
end
 
--[[--------------------------< G E T _ S E A S O N _ N U M B E R >--------------------------------------------
returns a number according to the sequence of seasons in a year: 1 for Winter, etc. Capitalization and spelling must be correct. If not a valid season, returns 0
 
Uses ISO DIS 8601 2016 part 2 §4.7 Divisions of a year for hemishpere-independent seasons:
21-24 = Spring, Summer, Autumn, Winter, independent of “Hemisphere”
 
These additional divisions not currently supported:
25-28 = Spring - Northern Hemisphere, Summer- Northern Hemisphere, Autumn - Northern Hemisphere, Winter - Northern Hemisphere
29-32 = Spring – Southern Hemisphere, Summer– Southern Hemisphere, Autumn – Southern Hemisphere, Winter - Southern Hemisphere
33-36 = Quarter 1, Quarter 2, Quarter 3, Quarter 4 (3 months each)
37-39 = Quadrimester 1, Quadrimester 2, Quadrimester 3 (4 months each)
40-41 = Semestral 1, Semestral-2 (6 months each)
 
]]
local function get_season_number (season)
return cfg.date_nameslocal season_list = {['Winter']=21, ['Spring']=22, ['Summer']=23, ['localFall'].season=24, [season'Autumn'] or =24}; -- look for make sure these numbers do not overlap month numberslocal names firsttemp; cfg.date_names['en'].season temp=season_list[season] or ; if temp then return temp; end -- failing that, look for English namesif season is a valid name return its number return 0; -- misspelled, improper case, or not a recognized season name
end
local function is_proper_name (name)
return cfg.date_nameslocal name_list = {['localChristmas'].named=31}local temp; temp=name_list[name] or -- look for local names dates first; if temp then return temp; end cfg.date_names['en'].named[name] or -- failing that, look for English namesif name is a valid name return its number return 0; -- misspelled, improper case, or not a recognized named dateproper name
end
]]
local year_limit;
local function is_valid_year(year)
if not is_set(year_limit) then
Month pairs are expected to be left to right, earliest to latest in time.
All season ranges Similarly, seasons are accepted as valid because there are publishers out there who have published also left to right, earliest to latest in time. There is an oddity with seasons: winter is assigned a Summer–Spring YYYY issue so value of 1, spring 2, ...,fall and autumn 4. Because winter can follow fall/autumn at the end of a calender year, a special test is made to see if |date=Fall-Winter yyyy (4-1) is the date. ok
]]
local function is_valid_month_season_range(range_start, range_end)
local range_start_number = get_month_number (range_start);
local range_end_number;
if 0 == range_start_number then -- is this a month range?
local range_start_number = get_season_number (range_start); -- not a month; is it a season? get start season number local range_end_number = get_season_number (range_end); -- get end season number
if (0 ~= range_start_number) and (0 ~= then -- is start of range a season? if range_start_number < range_end_number) then -- range_start is a season return true; -- return truewhen range_end is also a season and follows start season; else false end if 24 == range_start_number and 21 == range_end_number then -- any special case when season pairing range is acceptedFall-Winter or Autumn-Winter return true; end
end
return false; -- range_start is not a month or a season; or range_start is a season and/or range_end is not a ; or improper seasonsequence
end
-- here when range_start is a month local range_end_number = get_month_number (range_end); -- get end month number
if range_start_number < range_end_number then -- range_start is a month; does range_start precede range_end?
if is_valid_month_range_style (range_start, range_end) then -- do months have the same style?
The input table has:
year, year2 – always present; if before 1582, ignore months and days if present
month, month2 – 0 if not provided, 1-12 for months, 21-24 for seasons; 99 Christmas31– proper name dates
day, day2 – 0 if not provided, 1-31 for days
local date; -- one date or first date in a range
local date2 = ''; -- end of range date
-- start temporary Julian / Gregorian calendar uncertainty detection
local year = tonumber(input.year); -- this temporary code to determine the extent of sources dated to the Julian/Gregorian
local month = tonumber(input.month); -- interstice 1 October 1582 – 1 January 1926
local day = tonumber (input.day);
if (0 ~= day) and -- day must have a value for this to be a whole date
(((1582 == year) and (10 <= month) and (12 >= month)) or -- any whole 1582 date from 1 october to 31 December or
((1926 == year) and (1 == month) and (1 == input.day)) or -- 1 January 1926 or
((1582 < year) and (1925 >= year))) then -- any date 1 January 1583 – 31 December 1925
tCOinS_date.inter_cal_cat = true; -- set category flag true
end
-- end temporary Julian / Gergorian calendar uncertainty detection
if 1582 > tonumber(input.year) or 20 < tonumber(input.month) then -- Julian calendar or season so &rft.date gets year only
end
if 20 < tonumber(input.month) then -- if season or propername date
local season = {[2421]='winter', [2122]='spring', [2223]='summer', [2324]='fall', [9931]='Christmas'}; -- seasons lowercase, no autumn; proper names use title case
if 0 == input.month2 then -- single season date
if 30 <tonumber(input.month) then
if input.year ~= input.year2 then -- season year – season year range or season year–year
tCOinS_date.rftssn = season[input.month]; -- start of range season; keep this?
if 0~= input.month2 then
tCOinS_date.rftchron = string.format ('%s %s – %s %s', season[input.month], input.year, season[input.month2], input.year2);
end
]]
local function check_date (date_string, tCOinS_date, test_accessdate)
local year; -- assume that year2, months, and days are not used;
local year2=0; -- second year in a year range
if date_string:match("^%d%d%d%d%-%d%d%-%d%d$") then -- year-initial numerical year month day format
year, month, day=string.match(date_string, "(%d%d%d%d)%-(%d%d)%-(%d%d)");
if 12 < tonumber(month) or 1 > tonumber(month) or 1582 1583 > tonumber(year) or 0 == tonumber(day) then return false; end -- month or day number not valid or not Gregorian calendar
anchor_year = year;
  elseif mw.ustring.date_string:match(date_string, "^%D- a+ +[1-9]%d?, +[1-9]%d%d%d%a?$") then -- month-initial: month day, year month, day, anchor_year, year=mw.ustringstring.match(date_string, "(%D-a+) +%s*(%d%d?),%s*((%d%d%d%d?)%a?)");
month = get_month_number (month);
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
elseif mw.ustring.date_string:match(date_string, "^%D- a+ +[1-9]%d?[%- ][1-9]%d?, +[1-9]%d%d%d%a?$") then -- month-initial day range: month day–day, year; days are separated by endash month, day, day2, anchor_year, year=mw.ustringstring.match(date_string, "(%D-a+) +(%d%d?)[%- ](%d%d?), +((%d%d%d%d)%a?)");
if tonumber(day) >= tonumber(day2) then return false; end -- date range order is left to right: earlier to later; dates may not be the same;
month = get_month_number (month);
year2=year;
elseif mw.ustring.date_string:match(date_string, "^[1-9]%d? +%D- a+ +[1-9]%d%d%d%a?$") then -- day-initial: day month year day, month, anchor_year, year=mw.ustringstring.match(date_string, "(%d%d*)%s*(%D-a+) +%s*((%d%d%d%d?)%a?)");
month = get_month_number (month);
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
elseif mw.ustring.date_string:match(date_string, "^[1-9]%d?[%- ][1-9]%d? +%D- a+ +[1-9]%d%d%d%a?$") then -- day-range-initial: day–day month year; days are separated by endash day, day2, month, anchor_year, year=mw.ustringstring.match(date_string, "(%d%d?)[%- ](%d%d?) +(%D-a+) +((%d%d%d%d)%a?)");
if tonumber(day) >= tonumber(day2) then return false; end -- date range order is left to right: earlier to later; dates may not be the same;
month = get_month_number (month);
year2=year;
elseif mw.ustring.date_string:match(date_string, "^[1-9]%d? +%D- a+[%- ] +[1-9]%d? +%D- a+ +[1-9]%d%d%d%a?$") then -- day initial month-day-range: day month - day month year; uses spaced endash day, month, day2, month2, anchor_year, year=mw.ustring.date_string:match(date_string, "(%d%d?) +(%D-a+) +[%- ] +(%d%d?) +(%D-a+) +((%d%d%d%d)%a?)");
if (not is_valid_month_season_range(month, month2)) or not is_valid_year(year) then return false; end -- date range order is left to right: earlier to later;
month = get_month_number (month); -- for metadata
year2=year;
elseif mw.ustring.date_string:match(date_string, "^%D- a+ +[1-9]%d? +[%-–] a+%D- +[1-9]%d?, +[1-9]%d%d%d?%a?$") then -- month initial month-day-range: month day – month day, year; uses spaced endash month, day, month2, day2, anchor_year, year=mw.ustring.date_string:match(date_string, "(%D-a+) +(%d%d?) +[%- ] +(%D-a+) +(%d%d?), +((%d%d%d%d)%a?)");
if (not is_valid_month_season_range(month, month2)) or not is_valid_year(year) then return false; end
month = get_month_number (month); -- for metadata
year2=year;
elseif mw.ustring.date_string:match(date_string, "^[1-9]%d? +%D- a+ +[1-9]%d%d%d +[%- ] +[1-9]%d? +%D- a+ +[1-9]%d%d%d%a?$") then -- day initial month-day-year-range: day month year - day month year; uses spaced endash day, month, year, day2, month2, anchor_year, year2=mw.ustring.date_string:match(date_string, "(%d%d?) +(%D-a+) +(%d%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) or not is_valid_month_range_style(month, month2) then return false; end -- year2 no more than one year in the future; months same style
month2 = get_month_number (month2);
elseif mw.ustring.date_string:match(date_string, "^%D- a+ +[1-9]%d?, +[1-9]%d%d%d +[%-–] a+%D- +[1-9]%d?, +[1-9]%d%d%d%a?$") then -- month initial month-day-year-range: month day, year – month day, year; uses spaced endash month, day, year, month2, day2, anchor_year, year2=mw.ustring.date_string:match(date_string, "(%D-a+) +(%d%d?), +(%d%d%d%d) +[%- ] +(%D-a+) +(%d%d?), +((%d%d%d%d)%a?)");
if tonumber(year2) <= tonumber(year) then return false; end -- must be sequential years, left to right, earlier to later
if not is_valid_year(year2) or not is_valid_month_range_style(month, month2) then return false; end -- year2 no more than one year in the future; months same style
month2 = get_month_number (month2);
elseif mw.ustring.date_string:match(date_string, "^%D- a+ +[1-9]%d%d%d[%- ]%d%d%a?$") then -- special case Winter/Summer year-year (YYYY-YY); year separated with unspaced endash
local century;
month, year, century, anchor_year, year2=mw.ustring.date_string:match(date_string, "(%D-a+) +((%d%d)%d%d)[%- ]((%d%d)%a?)");
if 'Winter' ~= month and 'Summer' ~= month then return false end; -- 'month' can only be Winter or Summer
anchor_year=year..'–'..anchor_year; -- assemble anchor_year from both years
month = get_season_number (month);
elseif mw.ustring.date_string:match(date_string, "^%D- a+ +[1-9]%d%d%d[%- ][1-9]%d%d%d%a?$") then -- special case Winter/Summer year-year; year separated with unspaced endash month, year, anchor_year, year2=mw.ustring.date_string:match(date_string, "(%D-a+) +(%d%d%d%d)[%- ]((%d%d%d%d)%a?)");
if 'Winter' ~= month and 'Summer' ~= month then return false end; -- 'month' can only be Winter or Summer
anchor_year=year..'–'..anchor_year; -- assemble anchor_year from both years
month = get_season_number (month); -- for metadata
elseif mw.ustring.date_string:match(date_string, "^%D- a+ +[1-9]%d%d%d +[%- ] %a+%D- +[1-9]%d%d%d%a?$") then -- month/season year - month/season year; separated by spaced endash month, year, month2, anchor_year, year2=mw.ustring.date_string:match(date_string, "(%D-a+) +(%d%d%d%d) +[%- ] +(%D-a+) +((%d%d%d%d)%a?)");
anchor_year=year..'–'..anchor_year; -- assemble anchor_year from both years
if tonumber(year) >= tonumber(year2) then return false; end -- left to right, earlier to later, not the same
end
elseif mw.ustring.date_string:match(date_string, "^%D-[%- a+ ]%D- a+ +[1-9]%d%d%d%a?$") then -- month/season range year; months separated by endash month, month2, anchor_year, year=mw.ustring.date_string:match(date_string, "(%D-a+)[%- ](%D-a+)%s*((%d%d%d%d)%a?)");
if (not is_valid_month_season_range(month, month2)) or (not is_valid_year(year)) then return false; end
if 0 ~= get_month_number(month) then -- determined to be a valid range so just check this one to know if month or season
year2=year;
elseif mw.ustring.date_string:match(date_string, "^%D- a+ +%d%d%d%d%a?$") then -- month/season year or proper-name year month, anchor_year, year=mw.ustring.date_string:match(date_string, "(%D-a+)%s*((%d%d%d%d)%a?)");
if not is_valid_year(year) then return false; end
if not is_valid_month_or_season (month) and 0 == is_proper_name (month) then return false; end
end
elseif mw.ustring.date_string:match(date_string, "^[1-9]%d%d%d?[%- ][1-9]%d%d%d?%a?$") then -- Year range: YYY-YYY or YYY-YYYY or YYYY–YYYY; separated by unspaced endash; 100-9999 year, anchor_year, year2=mw.ustring.date_string:match(date_string, "(%d%d%d%d?)[%- ]((%d%d%d%d?)%a?)");
anchor_year=year..'–'..anchor_year; -- assemble anchor year from both years
if tonumber(year) >= tonumber(year2) then return false; end -- left to right, earlier to later, not the same
if not is_valid_year(year2) then return false; end -- no year farther in the future than next year
elseif mw.ustring.date_string:match(date_string, "^[1-9]%d%d%d[%- ]%d%d%a?$") then -- Year range: YYYY–YY; separated by unspaced endash
local century;
year, century, anchor_year, year2=mw.ustring.date_string:match(date_string, "((%d%d)%d%d)[%- ]((%d%d)%a?)");
anchor_year=year..'–'..anchor_year; -- assemble anchor year from both years
if 13 > tonumber(year2) then return false; end -- don't allow 2003-05 which might be May 2003
return false;
end
 
-- LOCAL: do not use mw.ustring: it allows full-width characters for %d.
elseif date_string:match("^[1-9]%d%d%d年[1-9]%d?月[1-9]%d?日$") then -- zh: year month day
year, month, day=date_string:match("(%d%d%d%d)年(%d%d*月)(%d%d*)日");
month = get_month_number (month);
if 0 == month then return false; end
anchor_year = year;
 
elseif date_string:match("^[1-9]%d%d%d年[1-9]%d?月$") then -- zh: year month
year, month=date_string:match("(%d%d%d%d)年(%d%d*月)");
month = get_month_number (month);
if 0 == month then return false; end
anchor_year = year;
 
elseif date_string:match("^[1-9]%d%d%d?年$") then -- zh: year; here accept either YYY or YYYY
year=date_string:match("(%d%d%d%d?)年");
if false == is_valid_year(year) then
return false;
end
anchor_year = year;
 
elseif date_string:match("^%d%d%d%d%-%d%d$") then -- numerical year month format
year, month=date_string:match("(%d%d%d%d)%-(%d%d)");
month=tonumber(month);
if 12 < month or 1 > month or 1583 > tonumber(year) then return false; end -- month number not valid or not Gregorian calendar
anchor_year = year;
-- END LOCAL
else
return false; -- date format not one of the MOS:DATE approved formats
end
 
if test_accessdate then -- test accessdate here because we have numerical date parts
if 0 ~= year and 0 ~= month and 0 ~= day and -- all parts of a single date required
0 == year2 and 0 == month2 and 0 == day2 then -- none of these; accessdate must not be a range
if not is_valid_accessdate (year..'-'..month..'-'..day) then
return false; -- return false when accessdate out of bounds
end
else
return false; -- return false when accessdate is a range of two dates
end
end
local anchor_year; -- will return as nil if the date being tested is not |date=
local COinS_date; -- will return as nil if the date being tested is not |date=
local embargo_date; -- if embargo date is a good dmy, mdy, ymd date then holds original value else reset to 9999
local error_message = "";
local good_date = false;
if is_set(v) then -- if the parameter has a value
if v:match("^c%. [1-9]%d%d%d?%a?$") then -- special case for c. year or with or without CITEREF disambiguator - only |date= and |year=
v = mw.ustring.gsub (v, '%d', cfg.date_names.local_digits);
local year = v:match("c%. ([1-9]%d%d%d?)%a?"); -- get the year portion so it can be tested
if 'date'==k then
end
elseif 'date'==k then -- if the parameter is |date=
if v:match("^n%.d%.%a?$") then -- if |date=n.d. with or without a CITEREF disambiguator
good_date, anchor_year, COinS_date = true, v:match("((n%.d%.)%a?)"); --"n.d."; no error when date parameter is set to no date
elseif v:match("^nd%a?$") then -- if |date=nd with or without a CITEREF disambiguator
else
good_date, anchor_year, COinS_date = check_date (v, tCOinS_date); -- go test the date
end
elseif 'year'==k then -- if the parameter is |year= it should hold only a year value
if v:match("^[1-9]%d%d%d?%a?$") then -- if |year= 3 or 4 digits only with or without a CITEREF disambiguator
good_date, anchor_year, COinS_date = true, v:match("((%d+)%a?)");
end
elseif 'access-date'==k then -- if the parameter is |date=
good_date = check_date (v, nil, true); -- go test the date; nil is a placeholder; true is the test_accessdate flag
elseif 'embargo'==k then -- if the parameter is |embargo=
good_date = check_date (v); -- go test the date
if true == good_date then -- if the date is a valid date
good_date, embargo_date = is_valid_embargo_date is_valid_accessdate (v); -- is |embargo= Wikipedia start date a single dmy, mdy, or ymd formatted < accessdate < tomorrow's date? yes:returns embargo; no: returns 9999
end
else -- any other date-holding parameter
end
end
return anchor_year, embargo_date, error_message; -- and done
end
year = year_string:match ('(%d%d%d%d?)');
if date_string:match ('%d%d%d%d%-%d%d%-%d%d') and year_string:match ('%d%d%d%d%a') then --special case where both date and year are required YYYY-MM-DD and YYYYx
date1 = date_string:match ('(%d%d%d%d)');
year = year_string:match ('(%d%d%d%d)');
end
elseif date_string:match ("%d%d%d%d?.-%d%d%d%d?") then -- any of the standard range formats of date with two three- or four-digit years
date1, date2 = date_string:match ("(%d%d%d%d?).-(%d%d%d%d?)");
if year ~= date1 and year ~= date2 then
end
elseif mw.ustring.date_string:match(date_string, "%d%d%d%d[%s%-–]+%d%d") then -- YYYY-YY date ranges
local century;
date1, century, date2 = mw.ustring.date_string:match(date_string, "((%d%d)%d%d)[%s%-–]+(%d%d)");
date2 = century..date2; -- convert YY to YYYY
if year ~= date1 and year ~= date2 then
result = 0;
end
else
result = 0; -- no recognizable year in date
end
return result;
end
 --[[-------------------------< R E F O R M A T T A B L E S >------------------------------------------------ These table are used exclusively for reformatting return {dates ]] local source_patterns = { -- this table holds patterns that match allowed date formats used to extract date components ['dmy'] = '^(%d%d?)%s+(%a+)%s+(%d%d%d%d)$', ['mdy'] = '^(%a+)%s+(%d%d?),%s+(%d%d%d%d)$', ['ymd'] = '^(%d%d%d%d)%-(%d%d)-(%d%d)$', } local short_formats = { -- this table holds format strings used by os.date() for short month names ['dmy'] = '%e %b %Y', ['mdy'] = '%b %e, %Y', ['ymd'] = '%F', } local long_formats = { -- this table holds format strings used by os.date() for long month names ['dmy'] = '%e %B %Y', ['mdy'] = '%B %e, %Y', ['ymd'] = '%F', }  --[[-------------------------< G E T _ D M Y _ D A T E _ P A R T S >------------------------------------------ extracts year, month and day from DMY formatted date, places them in the source_date table, and returns. ]] local function get_dmy_date_parts (date, source_date) source_date.day, source_date.month, source_date.year = date:match (source_patterns['dmy']); -- get date components as strings source_date.month = get_month_number (source_date.month); -- get month numberend  --[[-------------------------< G E T _ M D Y _ D A T E _ P A R T S >------------------------------------------ extracts year, month and day from MDY formatted date, places them in the source_date table, and returns. ]] local function get_mdy_date_parts (date, source_date) source_date.month, source_date.day, source_date.year = date:match (source_patterns['mdy']); -- get date components as strings source_date.month = get_month_number (source_date.month); -- get month numberend  --[[-------------------------< G E T _ Y M D _ D A T E _ P A R T S >------------------------------------------ extracts year, month and day from YMD formatted date, places them in the source_date table, and returns. ]] local function get_ymd_date_parts (date, source_date) source_date.year, source_date.month, source_date.day = date:match (source_patterns['ymd']); -- get date components as stringsend  --[[-------------------------< R E F O R M A T _ D A T E S >-------------------------------------------------- Reformats existing dates into the format specified by format and short. format is one of several keywords: dmy, dmy-all, mdy, mdy-all, ymd, ymd-all. The all version includes access- andarchive-dates; otherwise these dates are not reformatted Date ranges, season dates, proper name dates are not currently supported. For i18n: This code works only at en.wiki because os.date() doesn't support any languages other than English.mw.getContentLanguage():formatDate() will work at non-English wikis only when the date format is yyyy-mm-dd. This isthe same issue that plagues is_valid_accessdate() It is possible that a solution like that written for ht:Module:Citation/CS1/Date_validation date_name_xlate() could be applied to this problem ]] local function reformat_dates (date_parameters_list, format, short) local all year_date_check = false; -- set to false to skip access- and archive-dates local format_str; local source_date = {year_date_check}; if format:match('%a+%-all') then format = format:match('(%a+)%-all'); -- extract the format all = true; -- set to true to format access- and archive-dates end for param_name, param_val in pairs (date_parameters_list) do -- for each date-holding parameter in the list if is_set (param_val) then -- if the parameter has a value if not all and in_array (param_name, {'access-date', 'archive-date'}) then -- if access- or archive-date and format not xxx-all param_val = ''; -- set to empty string so we don't process this date end for source, pattern in pairs (source_patterns) do if param_val:match (pattern) then if 'ymd' == source then get_ymd_date_parts (param_val, source_date); -- get the date parts into the source_date table elseif 'dmy' == source then get_dmy_date_parts (param_val, source_date); -- get the date parts into the source_date table elseif 'mdy' == source then get_mdy_date_parts (param_val, source_date); -- get the date parts into the source_date table end  if 'ymd' == format and 1582 > tonumber(source_date.year) then -- ymd format dates not allowed before 1582 return false; -- abandon reformatting end if short then format_str = short_formats[format]; else format_str = long_formats[format]; end -- convert date and save; date_parameters_list[param_name] = mw.text.trim (os.date (format_str, os.time(source_date))); -- strip leading space when single digit day and %e is first format end end end end return true; -- declare success and doneend  --[[--------------------------< D A T E _ H Y P H E N _ T O _ D A S H >---------------------------------------- Loops through the list of date-holding parameters and converts any hyphen to an ndash. Not called if the cs1|2template has any date errors. Modifies the date_parameters_list and returns true if hyphens are replaced, else returns false. ]] local function date_hyphen_to_dash (date_parameters_list) local result = false; local n; for param_name, param_val in pairs(date_parameters_list) do -- for each date-holding parameter in the list if not param_val:match ('%d%d%d%d%-%d%d%-%d%d') then -- for those that are not ymd dates param_val, n = param_val:gsub ('%-', '–'); -- replace any hyphen with ndash if 0 ~= n then date_parameters_list[param_name] = param_val; -- update the list result = true; end end end return result; -- so we know if any hyphens were replacedend  --[[-------------------------< D A T E _ N A M E _ X L A T E >------------------------------------------------ Attempts to translate English month names to local-language month names using names supplied by MediaWiki'sdate parser function. This is simple name-for-name replacement and may not work for all languages. ]] local function date_name_xlate (date_parameters_list) local xlate; local mode; -- long or short month names local modified = false; local date; for param_name, param_val in pairs(date_parameters_list) do -- for each date-holding parameter in the list if is_set(param_val) then -- if the parameter has a value date = param_val; for month in mw.ustring.gmatch (date, '%a+') do -- iterate through all dates in the date (single date or date range) if cfg.date_names.en.long[month] then mode = 'F'; -- English name is long so use long local name elseif cfg.date_names.en.short[month] then mode = 'M'; -- English name is short so use short local name else mode = nil; -- not an English month name; could be local language month name or an English season name end if mode then -- might be a season xlate = mw.getContentLanguage():formatDate(mode, '1' .. month); -- translate the month name to this local language date = mw.ustring.gsub (date, month, xlate); -- replace the English with the translation date_parameters_list[param_name] = date; -- save the translated date modified = true; end end  end end return modified; end  --[[--------------------------< S E T _ S E L E C T E D _ M O D U L E S >-------------------------------------- Sets local imported functions table to same (live or sandbox) as that used by the other modules. ]] local function set_selected_modules (cfg_table_ptr, utilities_page_ptr) is_set = utilities_page_ptr.is_set; -- import functions from selected Module:Citation/CS1/Utilities module in_array = utilities_page_ptr.in_array; -- import functions from selected Module:Citation/CS1/Utilities module cfg = cfg_table_ptr; -- import tables from selected Module:Citation/CS1/Configurationend   return { -- return exported functions dates = dates, year_date_check = year_date_check, reformat_dates = reformat_dates, date_hyphen_to_dash = date_hyphen_to_dash, date_name_xlate = date_name_xlate, set_selected_modules = set_selected_modules }
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