Модуль:Citation/CS1/Date validation: различия между версиями

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−
--[[--------------------------< F O R W A R D  D E C L A R A T I O N S >--------------------------------------
 
−
]]
 
−
 
−
local add_prop_cat, is_set, in_array, set_message, substitute, wrap_style; -- imported functions from selected Module:Citation/CS1/Utilities
 
−
local cfg; -- table of tables imported from selected Module:Citation/CS1/Configuration
 
−
 
−
 
−
--[[--------------------------< F I L E - S C O P E  D E C L A R A T I O N S >--------------------------------
 
−
 
−
File-scope variables are declared here
 
−
 
−
]]
 
−
 
−
local lang_object = mw.getContentLanguage(); -- used by is_valid_accessdate(), is_valid_year(), date_name_xlate(); TODO: move to ~/Configuration?
 
−
local year_limit; -- used by is_valid_year()
 
  
 +
local p = {}
  
−
--[=[-------------------------< I S _ V A L I D _ A C C E S S D A T E >----------------------------------------
+
--[[--------------------------< I S _ V A L I D _ A C C E S S D A T E >----------------------------------------
  
 
returns true if:
 
returns true if:
Строка 22: Строка 8:
  
 
Wikipedia start date is 2001-01-15T00:00:00 UTC which is 979516800 seconds after 1970-01-01T00:00:00 UTC (the start of Unix time)
 
Wikipedia start date is 2001-01-15T00:00:00 UTC which is 979516800 seconds after 1970-01-01T00:00:00 UTC (the start of Unix time)
−
accessdate is the date provided in |access-date= at time 00:00:00 UTC
+
accessdate is the date provided in |accessdate= at time 00:00:00 UTC
 
today is the current date at time 00:00:00 UTC plus 48 hours
 
today is the current date at time 00:00:00 UTC plus 48 hours
 
if today is 2015-01-01T00:00:00 then
 
if today is 2015-01-01T00:00:00 then
Строка 28: Строка 14:
 
adding 24 hours gives 2015-01-03T00:00:00 – one second more than tomorrow
 
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: parser
+
]]
−
apparently doesn't understand non-English date month names. This function will always return false when the date
 
−
contains a non-English month name because good1 is false after the call to lang.formatDate().  To get around that
 
−
call this function with YYYY-MM-DD format dates.
 
−
 
 
−
]=]
 
  
 
local function is_valid_accessdate (accessdate)
 
local function is_valid_accessdate (accessdate)
 +
local lang = mw.getContentLanguage();
 
local good1, good2;
 
local good1, good2;
−
local access_ts, tomorrow_ts; -- to hold Unix time stamps representing the dates
+
local access_ts, tomorrow_ts; -- to hold unix time stamps representing the dates
−
 
+
−
good1, access_ts = pcall (lang_object.formatDate, lang_object, 'U', accessdate ); -- convert accessdate value to Unix timestamp
+
good1, access_ts = pcall( lang.formatDate, lang, 'U', accessdate ); -- convert accessdate value to unix timesatmp
−
good2, tomorrow_ts = pcall (lang_object.formatDate, lang_object, 'U', 'today + 2 days' ); -- today midnight + 2 days is one second more than all day tomorrow
+
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
+
if good1 and good2 then
−
access_ts = tonumber (access_ts) or lang_object:parseFormattedNumber (access_ts); -- convert to numbers for the comparison;
+
access_ts = tonumber (access_ts); -- convert to numbers for the comparison
−
tomorrow_ts = tonumber (tomorrow_ts) or lang_object:parseFormattedNumber (tomorrow_ts);
+
tomorrow_ts = tonumber (tomorrow_ts);
 
else
 
else
−
return false; -- one or both failed to convert to Unix time stamp
+
return false; -- one or both failed to convert to unix time stamp
 
end
 
end
−
 
+
 
if 979516800 <= access_ts and access_ts < tomorrow_ts then -- Wikipedia start date <= accessdate < tomorrow's date
 
if 979516800 <= access_ts and access_ts < tomorrow_ts then -- Wikipedia start date <= accessdate < tomorrow's date
 
return true;
 
return true;
Строка 55: Строка 37:
 
end
 
end
 
end
 
end
−
 
  
 
--[[--------------------------< G E T _ M O N T H _ N U M B E R >----------------------------------------------
 
--[[--------------------------< G E T _ M O N T H _ N U M B E R >----------------------------------------------
  
−
returns a number according to the month in a date: 1 for January, etc.  Capitalization and spelling must be correct.
+
returns a number according to the month in a date: 1 for January, etc.  Capitalization and spelling must be correct. If not a valid month, returns 0
−
If not a valid month, returns 0
 
  
 
]]
 
]]
  
 
local function get_month_number (month)
 
local function get_month_number (month)
−
return cfg.date_names['local'].long[month] or cfg.date_names['local'].short[month] or -- look for local names first
+
local 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};
−
cfg.date_names['en'].long[month] or cfg.date_names['en'].short[month] or -- failing that, look for English names
+
local short_months = {['Jan']=1, ['Feb']=2, ['Mar']=3, ['Apr']=4, ['May']=5, ['Jun']=6, ['Jul']=7, ['Aug']=8, ['Sep']=9, ['Oct']=10, ['Nov']=11, ['Dec']=12};
−
0; -- not a recognized month name
+
local temp;
 +
temp=long_months[month];
 +
if temp then return temp; end -- if month is the long-form name
 +
temp=short_months[month];
 +
if temp then return temp; end -- if month is the short-form name
 +
return 0; -- misspelled, improper case, or not a month name
 
end
 
end
−
 
  
 
--[[--------------------------< G E T _ S E A S O N _ N U M B E R >--------------------------------------------
 
--[[--------------------------< 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: 21 for Spring, etc.  Capitalization and spelling
+
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
−
must be correct. If not a valid season, returns 0.
 
−
21-24 = Spring, Summer, Autumn, Winter, independent of “Hemisphere”
 
−
 
 
−
returns 0 when <param> is not |date=
 
−
 
 
−
Season numbering is defined by Extended Date/Time Format (EDTF) specification (https://www.loc.gov/standards/datetime/)
 
−
which became part of ISO 8601 in 2019.  See '§Sub-year groupings'.  The standard defines various divisions using
 
−
numbers 21-41.  cs1|2 only supports generic seasons.  EDTF does support the distinction between north and south
 
−
hemisphere seasons but cs1|2 has no way to make that distinction.
 
−
 
 
−
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, param)
+
local function get_season_number (season)
−
if 'date' ~= param then
+
local season_list = {['Winter']=1, ['Spring']=2, ['Summer']=3, ['Fall']=4, ['Autumn']=4}
−
return 0; -- season dates only supported by |date=
+
local temp;
−
end
+
temp=season_list[season];
−
return cfg.date_names['local'].season[season] or -- look for local names first
+
if temp then return temp; end -- if season is a valid name return its number
−
cfg.date_names['en'].season[season] or -- failing that, look for English names
+
return 0; -- misspelled, improper case, or not a season name
−
0; -- not a recognized season name
 
 
end
 
end
  
 +
--[[--------------------------< I S _ P R O P E R _ N A M E >--------------------------------------------------
  
−
--[[--------------------------< G E T _ Q U A R T E R _ N U M B E R >------------------------------------------
+
returns a non-zero number if date contains a recognized proper name.  Capitalization and spelling must be correct.
−
 
 
−
returns a number according to the sequence of quarters in a year: 33 for first quarter, etc.  Capitalization and spelling
 
−
must be correct. If not a valid quarter, returns 0.
 
−
33-36 = Quarter 1, Quarter 2, Quarter 3, Quarter 4 (3 months each)
 
−
 
 
−
returns 0 when <param> is not |date=
 
−
 
 
−
Quarter numbering is defined by Extended Date/Time Format (EDTF) specification (https://www.loc.gov/standards/datetime/)
 
−
which became part of ISO 8601 in 2019.  See '§Sub-year groupings'.  The standard defines various divisions using
 
−
numbers 21-41.  cs1|2 only supports generic seasons and quarters.
 
−
 
 
−
These additional divisions not currently supported:
 
−
37-39 = Quadrimester 1, Quadrimester 2, Quadrimester 3 (4 months each)
 
−
40-41 = Semestral 1, Semestral-2 (6 months each)
 
  
 
]]
 
]]
  
−
local function get_quarter_number (quarter, param)
+
local function is_proper_name (name)
−
if 'date' ~= param then
+
local name_list = {['Christmas']=1}
−
return 0; -- quarter dates only supported by |date=
+
local temp;
−
end
+
temp=name_list[name];
−
quarter = mw.ustring.gsub (quarter, ' +', ' '); -- special case replace multiple space chars with a single space char
+
if temp then return temp; end -- if name is a valid name return its number
−
return cfg.date_names['local'].quarter[quarter] or -- look for local names first
+
return 0; -- misspelled, improper case, or not a proper name
−
cfg.date_names['en'].quarter[quarter] or -- failing that, look for English names
 
−
0; -- not a recognized quarter name
 
 
end
 
end
  
 +
--[[--------------------------< I S _ V A L I D _ M O N T H _ O R _ S E A S O N >------------------------------
  
−
--[[--------------------------< G E T _ P R O P E R _ N A M E _ N U M B E R >----------------------------------
+
--returns true if month or season is valid (properly spelled, capitalized, abbreviated)
−
 
 
−
returns a non-zero number if date contains a recognized proper-name.  Capitalization and spelling must be correct.
 
−
 
 
−
returns 0 when <param> is not |date=
 
  
 
]]
 
]]
  
−
local function get_proper_name_number (name, param)
+
local function is_valid_month_or_season (month_season)
−
if 'date' ~= param then
+
if 0 == get_month_number (month_season) then -- if month text isn't one of the twelve months, might be a season
−
return 0; -- proper-name dates only supported by |date=
+
if 0 == get_season_number (month_season) then -- not a month, is it a season?
−
end
+
return false; -- return false not a month or one of the five seasons
−
return cfg.date_names['local'].named[name] or -- look for local names dates first
 
−
cfg.date_names['en'].named[name] or -- failing that, look for English names
 
−
0; -- not a recognized named date
 
−
end
 
−
 
 
−
 
 
−
--[[--------------------------< G E T _ E L E M E N T _ N U M B E R <------------------------------------------
 
−
 
 
−
returns true if month or season or quarter or proper name is valid (properly spelled, capitalized, abbreviated)
 
−
 
 
−
]]
 
−
 
 
−
local function get_element_number (element, param)
 
−
local num;
 
−
 
−
local funcs = {get_month_number, get_season_number, get_quarter_number, get_proper_name_number}; -- list of functions to execute in order
 
−
 
−
for _, func in ipairs (funcs) do -- spin through the function list
 
−
num = func (element, param); -- call the function and get the returned number
 
−
if 0 ~= num then -- non-zero when valid month season quarter
 
−
return num; -- return that number
 
 
end
 
end
 
end
 
end
−
return nil; -- not valid
+
return true;
 
end
 
end
  
Строка 173: Строка 101:
 
--[[--------------------------< I S _ V A L I D _ Y E A R >----------------------------------------------------
 
--[[--------------------------< I S _ V A L I D _ Y E A R >----------------------------------------------------
  
−
Function gets current year from the server and compares it to year from a citation parameter.  Years more than one
+
Function gets current year from the server and compares it to year from a citation parameter.  Years more than one year in the future are not acceptable.
−
year in the future are not acceptable.
 
−
 
 
−
Special case for |pmc-embargo-date=: years more than two years in the future are not acceptable
 
  
 
]]
 
]]
  
−
local function is_valid_year (year, param)
+
local function is_valid_year(year)
−
if not is_set (year_limit) then
+
if not is_set(year_limit) then
−
year_limit = tonumber(os.date("%Y"))+1; -- global variable so we only have to fetch it once
+
year_limit = tonumber(os.date("%Y"))+1; -- global variable so we only have to fetch it once
−
end
 
−
 
 
−
year = tonumber (year) or lang_object:parseFormattedNumber (year); -- convert to number for the comparison
 
−
if year and (100 > year) then -- years less than 100 not supported
 
−
return false;
 
 
end
 
end
−
+
return tonumber(year) <= year_limit; -- false if year is in the future more than one year
−
if 'pmc-embargo-date' == param then -- special case for |pmc-embargo-date=
 
−
return year and (year <= tonumber(os.date("%Y"))+2) or false; -- years more than two years in the future are not accepted
 
−
end
 
−
return year and (year <= year_limit) or false;
 
 
end
 
end
  
 +
--[[
 +
Returns true if day is less than or equal to the number of days in month and year is no farther into the future than next year; else returns false.
  
−
--[[--------------------------< I S _ V A L I D _ D A T E >----------------------------------------------------
+
Assumes Julian calendar prior to year 1582 and Gregorian calendar thereafter. Accounts for Julian calendar leap years before 1582 and Gregorian leap years after 1582.
−
 
+
Where the two calendars overlap (1582 to approximately 1923) dates are assumed to be Gregorian.
−
Returns true if day is less than or equal to the number of days in month and year is no farther into the future
 
−
than next year; else returns false.
 
−
 
 
−
Assumes Julian calendar prior to year 1582 and Gregorian calendar thereafter. Accounts for Julian calendar leap
 
−
years before 1582 and Gregorian leap years after 1582. Where the two calendars overlap (1582 to approximately
 
−
1923) dates are assumed to be Gregorian.
 
−
 
 
 
]]
 
]]
−
 
+
local function is_valid_date (year, month, day)
−
local function is_valid_date (year, month, day, param)
 
 
local days_in_month = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
 
local days_in_month = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
 
local month_length;
 
local month_length;
−
if not is_valid_year (year, param) then -- no farther into the future than next year except |pmc-embargo-date= no more than two years in the future
+
if not is_valid_year(year) then -- no farther into the future than next year
 
return false;
 
return false;
 
end
 
end
 
 
−
month = tonumber (month); -- required for YYYY-MM-DD dates
+
if (2==month) then -- if February
−
+
month_length = 28; -- then 28 days unless
−
if (2 == month) then -- if February
+
if 1582 > tonumber(year) then -- Julian calendar
−
month_length = 28; -- then 28 days unless
+
if 0==(year%4) then
−
if 1582 > tonumber(year) then -- Julian calendar
+
month_length = 29;
−
if 0 == (year%4) then -- is a leap year?
 
−
month_length = 29; -- if leap year then 29 days in February
 
 
end
 
end
−
else -- Gregorian calendar
+
else -- Gregorian calendar
−
if (0 == (year%4) and (0 ~= (year%100) or 0 == (year%400))) then -- is a leap year?
+
if (0==(year%4) and (0~=(year%100) or 0==(year%400))) then -- is a leap year?
−
month_length = 29; -- if leap year then 29 days in February
+
month_length = 29; -- if leap year then 29 days in February
 
end
 
end
 
end
 
end
 
else
 
else
−
month_length = days_in_month[month];
+
month_length=days_in_month[month];
 
end
 
end
  
Строка 237: Строка 145:
 
return true;
 
return true;
 
end
 
end
−
 
  
 
--[[--------------------------< I S _ V A L I D _ M O N T H _ R A N G E _ S T Y L E >--------------------------
 
--[[--------------------------< I S _ V A L I D _ M O N T H _ R A N G E _ S T Y L E >--------------------------
  
 
Months in a range are expected to have the same style: Jan–Mar or October–December but not February–Mar or Jul–August.  
 
Months in a range are expected to have the same style: Jan–Mar or October–December but not February–Mar or Jul–August.  
−
This function looks in cfg.date_names{} to see if both month names are listed in the long subtable or both are
+
There is a special test for May because it can be either short or long form.
−
listed in the short subtable.  When both have the same style (both are listed in the same table), returns true; false else
+
 
 +
Returns true when style for both months is the same
  
 
]]
 
]]
  
 
local function is_valid_month_range_style (month1, month2)
 
local function is_valid_month_range_style (month1, month2)
−
if (cfg.date_names.en.long[month1] and cfg.date_names.en.long[month2]) or -- are both English names listed in the long subtable?
+
local len1 = month1:len();
−
(cfg.date_names.en.short[month1] and cfg.date_names.en.short[month2]) or -- are both English names listed in the short subtable?
+
local len2 = month2:len();
−
(cfg.date_names['local'].long[month1] and cfg.date_names['local'].long[month2]) or -- are both local names listed in the long subtable?
+
if len1 == len2 then
−
(cfg.date_names['local'].short[month1] and cfg.date_names['local'].short[month2]) then -- are both local names listed in the short subtable?
+
return true; -- both months are short form so return true
−
return true;
+
elseif 'May' == month1 or 'May'== month2 then
 +
return true; -- both months are long form so return true
 +
elseif 3 == len1 or 3 == len2 then
 +
return false; -- months are mixed form so return false
 +
else
 +
return true; -- both months are long form so return true
 
end
 
end
−
return false; -- names are mixed
 
 
end
 
end
  
Строка 264: Строка 176:
 
Month pairs are expected to be left to right, earliest to latest in time.
 
Month pairs are expected to be left to right, earliest to latest in time.
  
−
All season ranges are accepted as valid because there are publishers out there who have published a Summer–Spring YYYY issue, hence treat as ok
+
Similarly, seasons are also left to right, earliest to latest in time.  There is an oddity with seasons: winter is assigned a 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.
  
 
]]
 
]]
  
−
local function is_valid_month_season_range(range_start, range_end, param)
+
local function is_valid_month_season_range(range_start, range_end)
 
local range_start_number = get_month_number (range_start);
 
local range_start_number = get_month_number (range_start);
−
local range_end_number;
 
−
 
−
if 0 == range_start_number then -- is this a month range?
 
−
range_start_number = get_season_number (range_start, param); -- not a month; is it a season? get start season number
 
−
range_end_number = get_season_number (range_end, param); -- get end season number
 
−
 
−
if (0 ~= range_start_number) and (0 ~= range_end_number) and (range_start_number ~= range_end_number) then
 
−
return true; -- any season pairing is accepted except when both are the same
 
−
end
 
−
return false; -- range_start and/or range_end is not a season
 
−
end
 
−
-- here when range_start is a month
 
−
range_end_number = get_month_number (range_end); -- get end month number
 
−
if range_start_number < range_end_number and -- range_start is a month; does range_start precede range_end?
 
−
is_valid_month_range_style (range_start, range_end) then -- do months have the same style?
 
−
return true; -- proper order and same style
 
−
end
 
−
return false; -- range_start month number is greater than or equal to range end number; or range end isn't a month
 
−
end
 
−
 
−
 
−
--[[--------------------------< M A K E _ C O I N S _ D A T E >------------------------------------------------
 
−
 
−
This function receives a table of date parts for one or two dates and an empty table reference declared in
 
−
Module:Citation/CS1.  The function is called only for |date= parameters and only if the |date=<value> is
 
−
determined to be a valid date format.  The question of what to do with invalid date formats is not answered here.
 
−
 
−
The date parts in the input table are converted to an ISO 8601 conforming date string:
 
−
single whole dates: yyyy-mm-dd
 
−
month and year dates: yyyy-mm
 
−
year dates: yyyy
 
−
ranges: yyyy-mm-dd/yyyy-mm-dd
 
−
yyyy-mm/yyyy-mm
 
−
yyyy/yyyy
 
−
 
−
Dates in the Julian calendar are reduced to year or year/year so that we don't have to do calendar conversion from
 
−
Julian to Proleptic Gregorian.
 
−
 
−
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 Christmas
 
−
day, day2 –  0 if not provided, 1-31 for days
 
 
 
−
the output table receives:
+
if 0 == range_start_number then -- is this a month range?
−
rftdate: an ISO 8601 formatted date
+
local range_start_number = get_season_number (range_start); -- not a month; is it a season? get start season number
−
rftchron: a free-form version of the date, usually without year which is in rftdate (season ranges and proper-name dates)
+
local range_end_number = get_season_number (range_end); -- get end season number
−
rftssn: one of four season keywords: winter, spring, summer, fall (lowercase)
 
−
rftquarter: one of four values: 1, 2, 3, 4
 
−
 
 
−
]]
 
−
 
 
−
local function make_COinS_date (input, tCOinS_date)
 
−
local date; -- one date or first date in a range
 
−
local date2 = ''; -- end of range date
 
−
input.year = tonumber (input.year) or lang_object:parseFormattedNumber (input.year); -- language-aware tonumber()
 
−
input.year2 = tonumber (input.year2) or lang_object:parseFormattedNumber (input.year2); -- COinS dates are pseudo-ISO 8601 so convert to Arabic numerals
 
−
 
 
−
-- start temporary Julian / Gregorian calendar uncertainty detection
 
−
local year = 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 / Gregorian calendar uncertainty detection
 
−
if ((1582 == year) and (10 > month)) or (1582 > year) then -- if a Julian calendar date
 
−
tCOinS_date.rftdate = tostring (input.year); -- &rft.date gets year only
 
−
return; -- done
 
−
end
 
−
-- here for all forms of Gregorian dates
 
−
if 20 < tonumber (input.month) then -- if season, quarter, or proper-name date
 
−
date = input.year; -- &rft.date gets year only
 
−
if 0 ~= input.year2 and input.year ~= input.year2 then -- if a range, only the second year portion when not the same as range start year
 
−
date = string.format ('%.4d/%.4d', input.year, input.year2) -- assemble the date range
 
−
end
 
  
−
local season = {[24] = 'winter', [21] = 'spring', [22] = 'summer', [23] = 'fall', [33] = '1', [34] = '2', [35] = '3', [36] = '4', [98] = 'Easter', [99] = 'Christmas'}; -- seasons lowercase, no autumn; proper-names use title case
+
if 0 ~= range_start_number then -- is start of range a season?
−
if 0 == input.month2 then -- single season, quarter, or proper-name date
+
if range_start_number < range_end_number then -- range_start is a season
−
if 40 < tonumber(input.month) then
+
return true; -- return true when range_end is also a season and follows start season; else false
−
tCOinS_date.rftchron = season[input.month]; -- proper-name date; used in journal metadata only
 
−
elseif 30 < tonumber(input.month) then
 
−
tCOinS_date.rftquarter = season[input.month]; -- quarter date; used in journal metadata only
 
−
else
 
−
tCOinS_date.rftssn = season[input.month]; -- season date; used in journal metadata only
 
 
end
 
end
−
else -- season ranges are lumped into &rft.chron; &rft.ssn and &rft.quarter are left blank
+
if 4 == range_start_number and 1 == range_end_number then -- special case when range is Fall-Winter or Autumn-Winter
−
if input.year ~= input.year2 then -- season year – season year range or season year–year
+
return true;
−
if 0 ~= input.month2 then
 
−
tCOinS_date.rftchron = string.format ('%s %s – %s %s', season[input.month], input.year, season[input.month2], input.year2); -- used in journal metadata only
 
−
end
 
−
else -- season–season year range
 
−
tCOinS_date.rftchron = season[input.month] .. '–' .. season[input.month2]; -- season–season year range; used in journal metadata only
 
 
end
 
end
 
end
 
end
−
 
+
return false; -- range_start is not a month or a season; or range_start is a season and range_end is not; or improper season sequence
−
tCOinS_date.rftdate = tostring (date);
 
−
return; -- done
 
−
end
 
−
-- here for gregorian calendar dates
 
−
if 0 ~= input.day then
 
−
date = string.format ('%s-%.2d-%.2d', input.year, tonumber(input.month), tonumber(input.day)); -- whole date
 
−
elseif 0 ~= input.month then
 
−
date = string.format ('%s-%.2d', input.year, tonumber(input.month)); -- year and month
 
−
else
 
−
date = string.format ('%s', input.year); -- just year
 
 
end
 
end
  
−
if 0 ~= input.year2 then
+
local range_end_number = get_month_number (range_end); -- get end month number
−
if 0 ~= input.day2 then
+
if range_start_number < range_end_number then -- range_start is a month; does range_start precede range_end?
−
date2 = string.format ('/%s-%.2d-%.2d', input.year2, tonumber(input.month2), tonumber(input.day2)); -- whole date
+
if is_valid_month_range_style (range_start, range_end) then -- do months have the same style?
−
elseif 0 ~= input.month2 then
+
return true; -- proper order and same style
−
date2 = string.format ('/%s-%.2d', input.year2, tonumber(input.month2)); -- year and month
 
−
else
 
−
date2 = string.format ('/%s', input.year2); -- just year
 
 
end
 
end
 
end
 
end
−
+
return false; -- range_start month number is greater than or equal to range end number; or range end isn't a month
−
tCOinS_date.rftdate = date .. date2; -- date2 has the '/' separator
 
−
return;
 
−
end
 
−
 
 
−
 
 
−
--[[--------------------------< P A T T E R N S >--------------------------------------------------------------
 
−
 
 
−
this is the list of patterns for date formats that this module recognizes.  Approximately the first half of these
 
−
patterns represent formats that might be reformatted into another format.  Those that might be reformatted have
 
−
'indicator' letters that identify the content of the matching capture: 'd' (day), 'm' (month), 'a' (anchor year),
 
−
'y' (year); second day, month, year have a '2' suffix.
 
−
 
 
−
These patterns are used for both date validation and for reformatting.  This table should not be moved to ~/Configuration
 
−
because changes to this table require changes to check_date() and to reformatter() and reformat_date()
 
−
 
 
−
]]
 
−
 
 
−
local patterns = {
 
−
-- year-initial numerical year-month-day
 
−
['ymd'] = {'^(%d%d%d%d)%-(%d%d)%-(%d%d)$', 'y', 'm', 'd'},
 
−
-- month-initial: month day, year
 
−
['Mdy'] = {'^(%D-) +([1-9]%d?), +((%d%d%d%d?)%a?)$', 'm', 'd', 'a', 'y'},
 
−
-- month-initial day range: month day–day, year; days are separated by endash
 
−
['Md-dy'] = {'^(%D-) +([1-9]%d?)[%-–]([1-9]%d?), +((%d%d%d%d)%a?)$', 'm', 'd', 'd2', 'a', 'y'},
 
−
-- day-initial: day month year
 
−
['dMy'] = {'^([1-9]%d?) +(%D-) +((%d%d%d%d?)%a?)$', 'd', 'm', 'a', 'y'},
 
−
-- year-initial: year month day; day: 1 or 2 two digits, leading zero allowed; not supported at en.wiki
 
−
-- ['yMd'] = {'^((%d%d%d%d?)%a?) +(%D-) +(%d%d?)$', 'a', 'y', 'm', 'd'},
 
−
-- day-range-initial: day–day month year; days are separated by endash
 
−
['d-dMy'] = {'^([1-9]%d?)[%-–]([1-9]%d?) +(%D-) +((%d%d%d%d)%a?)$', 'd', 'd2', 'm', 'a', 'y'},
 
−
-- day initial month-day-range: day month - day month year; uses spaced endash
 
−
['dM-dMy'] = {'^([1-9]%d?) +(%D-) +[%-–] +([1-9]%d?) +(%D-) +((%d%d%d%d)%a?)$', 'd', 'm', 'd2', 'm2', 'a', 'y'},
 
−
-- month initial month-day-range: month day – month day, year;  uses spaced endash
 
−
['Md-Mdy'] = {'^(%D-) +([1-9]%d?) +[%-–] +(%D-) +([1-9]%d?), +((%d%d%d%d)%a?)$','m', 'd', 'm2', 'd2', 'a', 'y'},
 
−
-- day initial month-day-year-range: day month year - day month year; uses spaced endash
 
−
['dMy-dMy'] = {'^([1-9]%d?) +(%D-) +(%d%d%d%d) +[%-–] +([1-9]%d?) +(%D-) +((%d%d%d%d)%a?)$', 'd', 'm', 'y', 'd2', 'm2', 'a', 'y2'},
 
−
-- month initial month-day-year-range: month day, year – month day, year;  uses spaced endash
 
−
['Mdy-Mdy'] = {'^(%D-) +([1-9]%d?), +(%d%d%d%d) +[%-–] +(%D-) +([1-9]%d?), +((%d%d%d%d)%a?)$', 'm', 'd', 'y', 'm2', 'd2', 'a', 'y2'},
 
−
 
 
−
-- these date formats cannot be converted, per se, but month name can be rendered short or long
 
−
-- month/season year - month/season year; separated by spaced endash
 
−
['My-My'] = {'^(%D-) +(%d%d%d%d) +[%-–] +(%D-) +((%d%d%d%d)%a?)$', 'm', 'y', 'm2', 'a', 'y2'},
 
−
-- month/season range year; months separated by endash
 
−
['M-My'] = {'^(%D-)[%-–](%D-) +((%d%d%d%d)%a?)$', 'm', 'm2', 'a', 'y'},
 
−
-- month/season year or proper-name year; quarter year when First Quarter YYYY etc.
 
−
['My'] = {'^([^%d–]-) +((%d%d%d%d)%a?)$', 'm', 'a', 'y'}, -- this way because endash is a member of %D; %D- will match January–March 2019 when it shouldn't
 
−
 
 
−
-- these date formats cannot be converted
 
−
['Sy4-y2'] = {'^(%D-) +((%d%d)%d%d)[%-–]((%d%d)%a?)$'}, -- special case Winter/Summer year-year (YYYY-YY); year separated with unspaced endash
 
−
['Sy-y'] = {'^(%D-) +(%d%d%d%d)[%-–]((%d%d%d%d)%a?)$'}, -- special case Winter/Summer year-year; year separated with unspaced endash
 
−
['y-y'] = {'^(%d%d%d%d?)[%-–]((%d%d%d%d?)%a?)$'}, -- year range: YYY-YYY or YYY-YYYY or YYYY–YYYY; separated by unspaced endash; 100-9999
 
−
['y4-y2'] = {'^((%d%d)%d%d)[%-–]((%d%d)%a?)$'}, -- year range: YYYY–YY; separated by unspaced endash
 
−
['y'] = {'^((%d%d%d%d?)%a?)$'}, -- year; here accept either YYY or YYYY
 
−
}
 
−
 
 
−
 
 
−
--[[--------------------------< 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 |pmc-embargo-date= is
 
−
set, the editor intended to embargo a PMC but |pmc-embargo-date= does not hold a single date.
 
−
 
 
−
]]
 
−
 
 
−
local function is_valid_embargo_date (v)
 
−
if v:match (patterns['ymd'][1]) or -- ymd
 
−
v:match (patterns['Mdy'][1]) or -- dmy
 
−
v:match (patterns['dMy'][1]) 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
 
end
−
 
  
 
--[[--------------------------< C H E C K _ D A T E >----------------------------------------------------------
 
--[[--------------------------< C H E C K _ D A T E >----------------------------------------------------------
  
−
Check date format to see that it is one of the formats approved by WP:DATESNO or WP:DATERANGE. Exception: only
+
Check date format to see that it is one of the formats approved by WP:DATESNO or WP:DATERANGE. Exception: only allowed range separator is endash.
−
allowed range separator is endash. Additionally, check the date to see that it is a real date: no 31 in 30-day
+
Additionally, check the date to see that it is a real date: no 31 in 30-day months; no 29 February when not a leap year.  Months, both long-form and three
−
months; no 29 February when not a leap year.  Months, both long-form and three character abbreviations, and seasons
+
character abbreviations, and seasons must be spelled correctly. Future years beyond next year are not allowed.
−
must be spelled correctly. Future years beyond next year are not allowed.
 
  
−
If the date fails the format tests, this function returns false and does not return values for anchor_year and
+
If the date fails the format tests, this function returns false and does not return values for anchor_year and COinS_date.  When this happens, the date parameter is
−
COinS_date.  When this happens, the date parameter is (DEBUG: not?) used in the COinS metadata and the CITEREF identifier gets
+
used in the COinS metadata and the CITEREF identifier gets its year from the year parameter if present otherwise CITEREF does not get a date value.
−
its year from the year parameter if present otherwise CITEREF does not get a date value.
 
  
 
Inputs:
 
Inputs:
−
date_string - date string from date-holding parameters (date, year, publication-date, access-date, pmc-embargo-date, archive-date, lay-date)
+
date_string - date string from date-holding parameters (date, year, accessdate, embargo, archivedate, etc.)
  
 
Returns:
 
Returns:
Строка 483: Строка 224:
 
true, anchor_year, COinS_date
 
true, anchor_year, COinS_date
 
anchor_year can be used in CITEREF anchors
 
anchor_year can be used in CITEREF anchors
−
COinS_date is ISO 8601 format date; see make_COInS_date()
+
COinS_date is date_string without anchor_year disambiguator if any
−
 
 
 
]]
 
]]
−
 
+
local function check_date (date_string)
−
local function check_date (date_string, param, tCOinS_date)
+
local year; -- assume that year2, months, and days are not used;
−
local year; -- assume that year2, months, and days are not used;
+
local year2=0; -- second year in a year range
−
local year2 = 0; -- second year in a year range
+
local month=0;
−
local month = 0;
+
local month2=0; -- second month in a month range
−
local month2 = 0; -- second month in a month range
+
local day=0;
−
local day = 0;
+
local day2=0; -- second day in a day range
−
local day2 = 0; -- second day in a day range
 
 
local anchor_year;
 
local anchor_year;
 
local coins_date;
 
local coins_date;
  
−
if date_string:match (patterns['ymd'][1]) then -- year-initial numerical year month day format
+
if date_string:match("^%d%d%d%d%-%d%d%-%d%d$") then -- year-initial numerical year month day format
−
year, month, day = date_string:match (patterns['ymd'][1]);
+
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 > tonumber(year) or 0 == tonumber(day) then return false; end -- month or day number not valid or not Gregorian calendar
+
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;
 
anchor_year = year;
−
+
 
−
elseif mw.ustring.match(date_string, patterns['Mdy'][1]) then -- month-initial: month day, year
+
elseif date_string:match("^%a+ +[1-9]%d?, +[1-9]%d%d%d%a?$") then -- month-initial: month day, year
−
month, day, anchor_year, year = mw.ustring.match(date_string, patterns['Mdy'][1]);
+
month, day, anchor_year, year=string.match(date_string, "(%a+)%s*(%d%d?),%s*((%d%d%d%d)%a?)");
 
month = get_month_number (month);
 
month = get_month_number (month);
−
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
+
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
 
 
−
elseif mw.ustring.match(date_string, patterns['Md-dy'][1]) then -- month-initial day range: month day–day, year; days are separated by endash
+
elseif date_string:match("^%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.ustring.match(date_string, patterns['Md-dy'][1]);
+
month, day, day2, anchor_year, year=string.match(date_string, "(%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;
+
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);
 
month = get_month_number (month);
−
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
+
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
−
month2=month; -- for metadata
 
−
year2 = year;
 
  
−
elseif mw.ustring.match(date_string, patterns['dMy'][1]) then -- day-initial: day month year
+
elseif date_string:match("^[1-9]%d? +%a+ +[1-9]%d%d%d%a?$") then -- day-initial: day month year
−
day, month, anchor_year, year = mw.ustring.match(date_string, patterns['dMy'][1]);
+
day, month, anchor_year, year=string.match(date_string, "(%d%d*)%s*(%a+)%s*((%d%d%d%d)%a?)");
 
month = get_month_number (month);
 
month = get_month_number (month);
−
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
+
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
  
−
--[[ NOT supported at en.wiki
+
elseif date_string:match("^[1-9]%d?–[1-9]%d? +%a+ +[1-9]%d%d%d%a?$") then -- day-range-initial: day–day month year; days are separated by endash
−
elseif mw.ustring.match(date_string, patterns['yMd'][1]) then -- year-initial: year month day; day: 1 or 2 two digits, leading zero allowed
+
day, day2, month, anchor_year, year=string.match(date_string, "(%d%d?)–(%d%d?) +(%a+) +((%d%d%d%d)%a?)");
−
anchor_year, year, month, day = mw.ustring.match(date_string, patterns['yMd'][1]);
+
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);
 
month = get_month_number (month);
−
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
+
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
−
-- end NOT supported at en.wiki ]]
 
  
−
elseif mw.ustring.match(date_string, patterns['d-dMy'][1]) then -- day-range-initial: day–day month year; days are separated by endash
+
elseif date_string:match("^[1-9]%d? +%a+ – [1-9]%d? +%a+ +[1-9]%d%d%d%a?$") then -- day initial month-day-range: day month - day month year; uses spaced endash
−
day, day2, month, anchor_year, year = mw.ustring.match(date_string, patterns['d-dMy'][1]);
+
day, month, day2, month2, anchor_year, year=date_string:match("(%d%d?) +(%a+) – (%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;
+
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);
 
month = get_month_number (month);
−
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
 
−
month2 = month; -- for metadata
 
−
year2 = year;
 
−
 
−
elseif mw.ustring.match(date_string, patterns['dM-dMy'][1]) then -- day initial month-day-range: day month - day month year; uses spaced endash
 
−
day, month, day2, month2, anchor_year, year = mw.ustring.match(date_string, patterns['dM-dMy'][1]);
 
−
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
 
 
month2 = get_month_number (month2);
 
month2 = get_month_number (month2);
−
year2 = year;
 
  
−
elseif mw.ustring.match(date_string, patterns['Md-Mdy'][1]) 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 = mw.ustring.match(date_string, patterns['Md-Mdy'][1]);
+
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, param)) 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); -- for metadata
+
month = get_month_number (month);
 
month2 = get_month_number (month2);
 
month2 = get_month_number (month2);
−
year2 = year;
 
  
−
elseif mw.ustring.match(date_string, patterns['dMy-dMy'][1]) then -- day initial month-day-year-range: day month year - day month year; uses spaced endash
+
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 = mw.ustring.match(date_string, patterns['dMy-dMy'][1]);
+
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 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
 
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
−
month = get_month_number (month); -- for metadata
+
month = get_month_number (month);
 
month2 = get_month_number (month2);
 
month2 = get_month_number (month2);
−
if 0 == month or 0 == month2 then return false; end -- both must be valid
 
  
−
elseif mw.ustring.match(date_string, patterns['Mdy-Mdy'][1]) then -- month initial month-day-year-range: month day, year – month day, year; uses spaced endash
+
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 = mw.ustring.match(date_string, patterns['Mdy-Mdy'][1]);
+
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 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
 
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
−
month = get_month_number (month); -- for metadata
+
month = get_month_number (month);
−
month2 = get_month_number(month2);
+
month2 = get_month_number (month2);
−
if 0 == month or 0 == month2 then return false; end -- both must be valid
 
  
−
elseif mw.ustring.match(date_string, patterns['Sy4-y2'][1]) then -- special case Winter/Summer year-year (YYYY-YY); year separated with unspaced endash
+
elseif date_string:match("^%a+ +[1-9]%d%d%d–%d%d%a?$") then -- special case Winter/Summer year-year (YYYY-YY); year separated with unspaced endash
 +
if nil == date_string:match("^Winter") and nil == date_string:match("^Summer") then return false end; -- 'month' can only be Winter or Summer
 
local century;
 
local century;
−
month, year, century, anchor_year, year2 = mw.ustring.match(date_string, patterns['Sy4-y2'][1]);
+
year, century, anchor_year, year2=date_string:match("%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
−
anchor_year = year .. '–' .. anchor_year; -- assemble anchor_year from both years
+
year2 = century..year2; -- add the century to year2 for comparisons
−
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 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
−
if not is_valid_year(year2) then return false; end -- no year farther in the future than next year
 
−
month = get_season_number(month, param);
 
  
−
elseif mw.ustring.match(date_string, patterns['Sy-y'][1]) then -- special case Winter/Summer year-year; year separated with unspaced endash
+
elseif date_string:match("^%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.match(date_string, patterns['Sy-y'][1]);
+
if nil == date_string:match("^Winter") and nil == date_string:match("^Summer") then return false end; -- 'month' can only be Winter or Summer
−
month = get_season_number (month, param); -- <month> can only be winter or summer; also for metadata
+
year, anchor_year, year2=date_string:match("%a+ +(%d%d%d%d)–((%d%d%d%d)%a?)");
−
if (month ~= cfg.date_names['en'].season['Winter']) and (month ~= cfg.date_names['en'].season['Summer']) then
+
anchor_year=year..'–'..anchor_year; -- assemble anchor_year from both years
−
return false; -- not Summer or Winter; abandon
+
if 1 ~= tonumber(year2) - tonumber(year) then return false; end -- must be sequential years, left to right, earlier to later
−
end
+
if not is_valid_year(year2) then return false; end -- no year farther in the future than next year
−
anchor_year = year .. '–' .. anchor_year; -- assemble anchor_year from both years
 
−
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 mw.ustring.match(date_string, patterns['My-My'][1]) then -- month/season year - month/season year; separated by spaced endash
+
elseif date_string:match("^%a+ +[1-9]%d%d%d% – %a+ +[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.match(date_string, patterns['My-My'][1]);
+
month, year, month2, anchor_year, year2=date_string:match("(%a+) +(%d%d%d%d) – (%a+) +((%d%d%d%d)%a?)");
−
anchor_year = year .. '–' .. anchor_year; -- assemble anchor_year from both years
+
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 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
+
if not is_valid_year(year2) then return false; end -- no year farther in the future than next year
−
if 0 ~= get_month_number(month) and 0 ~= get_month_number(month2) and is_valid_month_range_style(month, month2) then -- both must be month year, same month style
+
if not((0 ~= get_month_number(month) and 0 ~= get_month_number(month2) and is_valid_month_range_style(month, month2)) or -- both must be month year, same month style
−
month = get_month_number(month);
+
(0 ~= get_season_number(month) and 0 ~= get_season_number(month2))) then return false; end -- or season year, not mixed
−
month2 = get_month_number(month2);
 
−
elseif 0 ~= get_season_number(month, param) and 0 ~= get_season_number(month2, param) then -- both must be season year, not mixed
 
−
month = get_season_number(month, param);
 
−
month2 = get_season_number(month2, param);
 
−
else
 
−
return false;
 
−
end
 
  
−
elseif mw.ustring.match(date_string, patterns['M-My'][1]) then -- month/season range year; months separated by endash  
+
elseif date_string:match ("^%a+–%a+ +[1-9]%d%d%d%a?$") then -- month/season range year; months separated by endash  
−
month, month2, anchor_year, year = mw.ustring.match(date_string, patterns['M-My'][1]);
+
month, month2, anchor_year, year=date_string:match ("(%a+)–(%a+)%s*((%d%d%d%d)%a?)");
−
if (not is_valid_month_season_range(month, month2, param)) 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
−
if 0 ~= get_month_number(month) then -- determined to be a valid range so just check this one to know if month or season
+
return false;
−
month = get_month_number(month);
 
−
month2 = get_month_number(month2);
 
−
if 0 == month or 0 == month2 then return false; end
 
−
else
 
−
month = get_season_number(month, param);
 
−
month2 = get_season_number(month2, param);
 
 
end
 
end
−
year2 = year;
 
 
 
−
elseif mw.ustring.match(date_string, patterns['My'][1]) then -- month/season/quarter/proper-name year
+
elseif date_string:match("^%a+ +%d%d%d%d%a?$") then -- month/season year or proper-name year
−
month, anchor_year, year = mw.ustring.match(date_string, patterns['My'][1]);
+
month, anchor_year, year=date_string:match("(%a+)%s*((%d%d%d%d)%a?)");
 
if not is_valid_year(year) then return false; end
 
if not is_valid_year(year) then return false; end
−
month = get_element_number(month, param); -- get month season quarter proper-name number or nil
+
if not is_valid_month_or_season (month) and 0 == is_proper_name (month) then return false; end
−
if not month then return false; end -- not valid whatever it is
 
  
−
elseif mw.ustring.match(date_string, patterns['y-y'][1]) then -- Year range: YYY-YYY or YYY-YYYY or YYYY–YYYY; separated by unspaced endash; 100-9999
+
elseif date_string:match("^[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.match(date_string, patterns['y-y'][1]);
+
year, anchor_year, year2=date_string:match("(%d%d%d%d?)–((%d%d%d%d?)%a?)");
−
anchor_year = year .. '–' .. anchor_year; -- assemble anchor year from both years
+
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 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
 
if not is_valid_year(year2) then return false; end -- no year farther in the future than next year
  
−
elseif mw.ustring.match(date_string, patterns['y4-y2'][1]) then -- Year range: YYYY–YY; separated by unspaced endash
+
elseif date_string:match("^[1-9]%d%d%d–%d%d%a?$") then -- Year range: YYYY–YY; separated by unspaced endash
 
local century;
 
local century;
−
year, century, anchor_year, year2 = mw.ustring.match(date_string, patterns['y4-y2'][1]);
+
year, century, anchor_year, year2=date_string:match("((%d%d)%d%d)–((%d%d)%a?)");
−
anchor_year = year .. '–' .. anchor_year; -- assemble anchor year from both years
+
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
 
if 13 > tonumber(year2) then return false; end -- don't allow 2003-05 which might be May 2003
−
year2 = century .. year2; -- add the century to year2 for comparisons
+
year2 = century..year2; -- add the century to year2 for comparisons
 
if tonumber(year) >= tonumber(year2) then return false; end -- left to right, earlier to later, not the same
 
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
 
if not is_valid_year(year2) then return false; end -- no year farther in the future than next year
  
−
if in_array (param, {'date', 'publication-date', 'year'}) then -- here when 'valid' abbreviated year range; if one of these parameters
+
elseif date_string:match("^[1-9]%d%d%d?%a?$") then -- year; here accept either YYY or YYYY
−
add_prop_cat ('year-range-abbreviated'); -- add properties cat
+
anchor_year, year=date_string:match("((%d%d%d%d?)%a?)");
−
end
 
−
 
 
−
elseif mw.ustring.match(date_string, patterns['y'][1]) then -- year; here accept either YYY or YYYY
 
−
anchor_year, year = mw.ustring.match(date_string, patterns['y'][1]);
 
 
if false == is_valid_year(year) then
 
if false == is_valid_year(year) then
 
return false;
 
return false;
Строка 646: Строка 347:
  
 
else
 
else
−
return false; -- date format not one of the MOS:DATE approved formats
+
return false; -- date format not one of the MOS:DATE approved formats
−
end
 
−
 
 
−
if param ~= 'date' then -- CITEREF disambiguation only allowed in |date=; |year= & |publication-date= promote to date
 
−
if anchor_year:match ('%l$') then
 
−
return false;
 
−
end
 
−
end
 
−
 
 
−
if 'access-date' == param then -- test access-date 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; access-date must not be a range
 
−
if not is_valid_accessdate(year .. '-' .. month .. '-' .. day) then
 
−
return false; -- return false when access-date out of bounds
 
−
end
 
−
else
 
−
return false; -- return false when access-date is a range of two dates
 
−
end
 
−
end
 
−
 
 
−
if 'archive-date' == param then -- test archive-date here because we have numerical date parts
 
−
if not (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; archive-date must not be a range
 
−
return false; -- return false when archive-date is a range of two dates
 
−
end
 
 
end
 
end
  
−
local result=true; -- check whole dates for validity; assume true because not all dates will go through this test
+
local result=true; -- check whole dates for validity; assume true because not all dates will go through this test
 
if 0 ~= year and 0 ~= month and 0 ~= day and 0 == year2 and 0 == month2 and 0 == day2 then -- YMD (simple whole date)
 
if 0 ~= year and 0 ~= month and 0 ~= day and 0 == year2 and 0 == month2 and 0 == day2 then -- YMD (simple whole date)
−
result = is_valid_date (year, month, day, param); -- <param> for |pmc-embargo-date=
+
result=is_valid_date(year,month,day);
  
 
elseif 0 ~= year and 0 ~= month and 0 ~= day and 0 == year2 and 0 == month2 and 0 ~= day2 then -- YMD-d (day range)
 
elseif 0 ~= year and 0 ~= month and 0 ~= day and 0 == year2 and 0 == month2 and 0 ~= day2 then -- YMD-d (day range)
−
result = is_valid_date (year, month, day);
+
result=is_valid_date(year,month,day);
−
result = result and is_valid_date (year, month, day2);
+
result=result and is_valid_date(year,month,day2);
  
 
elseif 0 ~= year and 0 ~= month and 0 ~= day and 0 == year2 and 0 ~= month2 and 0 ~= day2 then -- YMD-md (day month range)
 
elseif 0 ~= year and 0 ~= month and 0 ~= day and 0 == year2 and 0 ~= month2 and 0 ~= day2 then -- YMD-md (day month range)
−
result = is_valid_date (year, month, day);
+
result=is_valid_date(year,month,day);
−
result = result and is_valid_date (year, month2, day2);
+
result=result and is_valid_date(year,month2,day2);
  
 
elseif 0 ~= year and 0 ~= month and 0 ~= day and 0 ~= year2 and 0 ~= month2 and 0 ~= day2 then -- YMD-ymd (day month year range)
 
elseif 0 ~= year and 0 ~= month and 0 ~= day and 0 ~= year2 and 0 ~= month2 and 0 ~= day2 then -- YMD-ymd (day month year range)
−
result = is_valid_date(year, month, day);
+
result=is_valid_date(year,month,day);
−
result = result and is_valid_date(year2, month2, day2);
+
result=result and is_valid_date(year2,month2,day2);
 
end
 
end
 
 
 
if false == result then return false; end
 
if false == result then return false; end
−
 
+
-- if here, then date_string is valid; get coins_date from date_string (leave CITEREF disambiguator) ...
−
if nil ~= tCOinS_date then -- this table only passed into this function when testing |date= parameter values
+
coins_date=date_string:match("^(.+%d)%a?$"); -- last character of valid disambiguatable date is always a digit
−
make_COinS_date ({year = year, month = month, day = day, year2 = year2, month2 = month2, day2 = day2}, tCOinS_date); -- make an ISO 8601 date string for COinS
+
coins_date= mw.ustring.gsub(coins_date, "–", "-" ); -- ... and replace any ndash with a hyphen
−
end
 
 
 
−
return true, anchor_year; -- format is good and date string represents a real date
+
return true, anchor_year, coins_date; -- format is good and date string represents a real date
 
end
 
end
−
 
  
 
--[[--------------------------< D A T E S >--------------------------------------------------------------------
 
--[[--------------------------< D A T E S >--------------------------------------------------------------------
Строка 707: Строка 382:
  
 
Unlike most error messages created in this module, only one error message is created by this function. Because all of the date holding parameters are processed serially,
 
Unlike most error messages created in this module, only one error message is created by this function. Because all of the date holding parameters are processed serially,
−
parameters with errors are added to the <error_list> sequence table as the dates are tested.
+
a single error message is created as the dates are tested.
  
 
]]
 
]]
  
−
local function dates(date_parameters_list, tCOinS_date, error_list)
+
--function p.dates(date_parameters_list)
−
local anchor_year; -- will return as nil if the date being tested is not |date=
+
local function dates(date_parameters_list)
−
local COinS_date; -- will return as nil if the date being tested is not |date=
+
local anchor_year; -- 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 COinS_date; -- will return as nil if the date being tested is not |date=
 +
local error_message = "";
 +
local mismatch = 0;
 
local good_date = false;
 
local good_date = false;
−
 
+
−
for k, v in pairs(date_parameters_list) do -- for each date-holding parameter in the list
+
for k, v in pairs(date_parameters_list) do -- for each date-holding parameter in the list
−
if is_set(v.val) then -- if the parameter has a value
+
if is_set(v) then -- if the parameter has a value
−
v.val = mw.ustring.gsub(v.val, '%d', cfg.date_names.local_digits); -- translate 'local' digits to Western 0-9
+
if v:match("^c%. [1-9]%d%d%d?%a?$") then -- special case for c. year or with or without CITEREF disambiguator - only |date= and |year=
−
if v.val:match("^c%. [1-9]%d%d%d?%a?$") then -- special case for c. year or with or without CITEREF disambiguator - only |date= and |year=
+
local year = v:match("c%. ([1-9]%d%d%d?)%a?"); -- get the year portion so it can be tested
−
local year = v.val:match("c%. ([1-9]%d%d%d?)%a?"); -- get the year portion so it can be tested
+
if 'date'==k then
−
if 'date' == k then
+
anchor_year, COinS_date = v:match("((c%. [1-9]%d%d%d?)%a?)"); -- anchor year and COinS_date only from |date= parameter
−
anchor_year, COinS_date = v.val:match("((c%. [1-9]%d%d%d?)%a?)"); -- anchor year and COinS_date only from |date= parameter
 
 
good_date = is_valid_year(year);
 
good_date = is_valid_year(year);
−
elseif 'year' == k then
+
elseif 'year'==k then
 
good_date = is_valid_year(year);
 
good_date = is_valid_year(year);
 
end
 
end
−
elseif 'date' == k then -- if the parameter is |date=
+
elseif 'date'==k then -- if the parameter is |date=
−
if v.val:match("^n%.d%.%a?$") then -- ToDo: I18N -- if |date=n.d. with or without a CITEREF disambiguator
+
if v:match("^n%.d%.%a?") then -- if |date=n.d. with or without a CITEREF disambiguator
−
good_date, anchor_year, COinS_date = true, v.val:match("((n%.d%.)%a?)"); -- ToDo: I18N -- "n.d."; no error when date parameter is set to no date
+
good_date, anchor_year, COinS_date = true, v:match("((n%.d%.)%a?)"); --"n.d."; no error when date parameter is set to no date
−
elseif v.val:match("^nd%a?$") then -- ToDo: I18N -- if |date=nd with or without a CITEREF disambiguator
+
elseif v:match("^nd%a?$") then -- if |date=nd with or without a CITEREF disambiguator
−
good_date, anchor_year, COinS_date = true, v.val:match("((nd)%a?)"); -- ToDo: I18N -- "nd"; no error when date parameter is set to no date
+
good_date, anchor_year, COinS_date = true, v:match("((nd)%a?)"); --"nd"; no error when date parameter is set to no date
 
else
 
else
−
good_date, anchor_year, COinS_date = check_date (v.val, k, tCOinS_date); -- go test the date
+
good_date, anchor_year, COinS_date = check_date (v); -- go test the date
 
end
 
end
−
elseif 'year' == k then -- if the parameter is |year= it should hold only a year value
+
elseif 'accessdate'==k then -- if the parameter is |date=
−
if v.val:match("^[1-9]%d%d%d?%a?$") then -- if |year = 3 or 4 digits only with or without a CITEREF disambiguator
+
good_date = check_date (v); -- go test the date
−
good_date, anchor_year, COinS_date = true, v.val:match("((%d+)%a?)");
+
if true == good_date then -- if the date is a valid date
 +
good_date = is_valid_accessdate (v); -- is Wikipedia start date < accessdate < tomorrow's date?
 
end
 
end
−
elseif 'pmc-embargo-date' == k then -- if the parameter is |pmc-embargo-date=
+
else -- any other date-holding parameter
−
good_date = check_date (v.val, k); -- go test the date
+
good_date = check_date (v); -- go test the date
−
if true == good_date then -- if the date is a valid date
+
end
−
good_date, embargo_date = is_valid_embargo_date (v.val); -- is |pmc-embargo-date= date a single dmy, mdy, or ymd formatted date? yes: returns embargo date; no: returns 9999
+
if false==good_date then -- assemble one error message so we don't add the tracking category multiple times
 +
if is_set(error_message) then -- once we've added the first portion of the error message ...
 +
error_message=error_message .. ", "; -- ... add a comma space separator
 
end
 
end
−
else -- any other date-holding parameter
+
error_message=error_message .. "&#124;" .. k .. "="; -- add the failed parameter
−
good_date = check_date (v.val, k); -- go test the date
 
−
end
 
−
if false == good_date then -- assemble one error message so we don't add the tracking category multiple times
 
−
table.insert (error_list, wrap_style ('parameter', v.name)); -- make parameter name suitable for error message list
 
 
end
 
end
 
end
 
end
 
end
 
end
−
return anchor_year, embargo_date; -- and done
+
return anchor_year, COinS_date, error_message, mismatch; -- and done
 
end
 
end
−
 
  
 
--[[--------------------------< Y E A R _ D A T E _ C H E C K >------------------------------------------------
 
--[[--------------------------< Y E A R _ D A T E _ C H E C K >------------------------------------------------
  
−
Compare the value provided in |year= with the year value(s) provided in |date=.  This function sets a local numeric value:
+
Compare the value provided in |year= with the year value(s) provided in |date=.  This function returns a numeric value:
 
0 - year value does not match the year value in date
 
0 - year value does not match the year value in date
 
1 - (default) year value matches the year value in date or one of the year values when date contains two years
 
1 - (default) year value matches the year value in date or one of the year values when date contains two years
 
2 - year value matches the year value in date when date is in the form YYYY-MM-DD and year is disambiguated (|year=YYYYx)
 
2 - year value matches the year value in date when date is in the form YYYY-MM-DD and year is disambiguated (|year=YYYYx)
−
 
−
the numeric value in <result> determines the 'output' if any from this function:
 
−
0 – adds error message to error_list sequence table
 
−
1 – adds maint cat
 
−
2 – does nothing
 
  
 
]]
 
]]
  
−
local function year_date_check (year_string, year_origin, date_string, date_origin, error_list)
+
local function year_date_check (year_string, date_string)
 
local year;
 
local year;
 
local date1;
 
local date1;
 
local date2;
 
local date2;
 
local result = 1; -- result of the test; assume that the test passes
 
local result = 1; -- result of the test; assume that the test passes
−
 
+
 
year = year_string:match ('(%d%d%d%d?)');
 
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
+
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 date and year required YYYY-MM-DD and YYYYx
 
date1 = date_string:match ('(%d%d%d%d)');
 
date1 = date_string:match ('(%d%d%d%d)');
 
year = year_string:match ('(%d%d%d%d)');
 
year = year_string:match ('(%d%d%d%d)');
Строка 788: Строка 457:
 
end
 
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
+
elseif date_string:match ("%d%d%d%d?.-%d%d%d%d?") then -- any of the standard formats of date with two three- or four-digit years
 
date1, date2 = date_string:match ("(%d%d%d%d?).-(%d%d%d%d?)");
 
date1, date2 = date_string:match ("(%d%d%d%d?).-(%d%d%d%d?)");
 
if year ~= date1 and year ~= date2 then
 
if year ~= date1 and year ~= date2 then
Строка 794: Строка 463:
 
end
 
end
  
−
elseif mw.ustring.match(date_string, "%d%d%d%d[%-–]%d%d") then -- YYYY-YY date ranges
+
elseif date_string:match ("%d%d%d%d[%s%-–]+%d%d") then -- YYYY-YY date ranges
 
local century;
 
local century;
−
date1, century, date2 = mw.ustring.match(date_string, "((%d%d)%d%d)[%-–]+(%d%d)");
+
date1, century, date2 = date_string:match ("((%d%d)%d%d)[%s%-–]+(%d%d)");
 
date2 = century..date2; -- convert YY to YYYY
 
date2 = century..date2; -- convert YY to YYYY
 
if year ~= date1 and year ~= date2 then
 
if year ~= date1 and year ~= date2 then
Строка 807: Строка 476:
 
result = 0;
 
result = 0;
 
end
 
end
−
else -- should never get here; this function called only when no other date errors
 
−
result = 0; -- no recognizable year in date
 
−
end
 
−
 
−
if 0 == result then -- year / date mismatch
 
−
table.insert (error_list, substitute (cfg.messages['mismatch'], {year_origin, date_origin})); -- add error message to error_list sequence table
 
−
elseif 1 == result then -- redundant year / date
 
−
set_message ('maint_date_year'); -- add a maint cat
 
 
end
 
end
 +
return result;
 
end
 
end
  
−
 
+
return {dates = dates, year_date_check = year_date_check} -- return exported functions
−
--[[--------------------------< R E F O R M A T T E R >--------------------------------------------------------
 
−
 
 
−
reformat 'date' into new format specified by format_param if pattern_idx (the current format of 'date') can be
 
−
reformatted.  Does the grunt work for reformat_dates().
 
−
 
 
−
The table re_formats maps pattern_idx (current format) and format_param (desired format) to a table that holds:
 
−
format string used by string.format()
 
−
identifier letters ('d', 'm', 'y', 'd2', 'm2', 'y2') that serve as indexes into a table t{} that holds captures
 
−
from mw.ustring.match() for the various date parts specified by  patterns[pattern_idx][1]
 
−
 
 
−
Items in patterns{} have the general form:
 
−
['ymd'] = {'^(%d%d%d%d)%-(%d%d)%-(%d%d)$', 'y', 'm', 'd'}, where:
 
−
['ymd'] is pattern_idx
 
−
patterns['ymd'][1] is the match pattern with captures for mw.ustring.match()
 
−
patterns['ymd'][2] is an indicator letter identifying the content of the first capture
 
−
patterns['ymd'][3] ... the second capture etc.
 
−
 
 
−
when a pattern matches a date, the captures are loaded into table t{} in capture order using the idemtifier
 
−
characters as indexes into t{}  For the above, a ymd date is in t{} as:
 
−
t.y = first capture (year), t.m = second capture (month), t.d = third capture (day)
 
−
 
 
−
To reformat, this function is called with the pattern_idx that matches the current format of the date and with
 
−
format_param set to the desired format.  This function loads table t{} as described and then calls string.format()
 
−
with the format string specified by re_format[pattern_idx][format_param][1] using values taken from t{} according
 
−
to the capture identifier letters specified by patterns[pattern_idx][format_param][n] where n is 2..
 
−
 
 
−
]]
 
−
 
 
−
local re_formats = {
 
−
['ymd'] = { -- date format is ymd; reformat to:
 
−
['mdy'] = {'%s %s, %s', 'm', 'd', 'y'}, -- |df=mdy
 
−
['dmy'] = {'%s %s %s', 'd', 'm', 'y'}, -- |df=dmy
 
−
-- ['yMd'] = {'%s %s %s', 'y', 'm', 'd'}, -- |df=yMd; not supported at en.wiki
 
−
},
 
−
['Mdy'] = { -- date format is Mdy; reformat to:
 
−
['mdy'] = {'%s %s, %s', 'm', 'd', 'y'}, -- for long/short reformatting
 
−
['dmy'] = {'%s %s %s', 'd', 'm', 'y'}, -- |df=dmy
 
−
['ymd'] = {'%s-%s-%s', 'y', 'm', 'd'}, -- |df=ymd
 
−
-- ['yMd'] = {'%s %s %s', 'y', 'm', 'd'}, -- |df=yMd; not supported at en.wiki
 
−
},
 
−
['dMy'] = { -- date format is dMy; reformat to:
 
−
['dmy'] = {'%s %s %s', 'd', 'm', 'y'}, -- for long/short reformatting
 
−
['mdy'] = {'%s %s, %s', 'm', 'd', 'y'}, -- |df=mdy
 
−
['ymd'] = {'%s-%s-%s', 'y', 'm', 'd'}, -- |df=ymd
 
−
-- ['yMd'] = {'%s %s %s', 'y', 'm', 'd'}, -- |df=yMd; not supported at en.wiki
 
−
},
 
−
['Md-dy'] = { -- date format is Md-dy; reformat to:
 
−
['mdy'] = {'%s %s–%s, %s', 'm', 'd', 'd2', 'y'}, -- for long/short reformatting
 
−
['dmy'] = {'%s–%s %s %s', 'd', 'd2', 'm', 'y'}, -- |df=dmy -> d-dMy
 
−
},
 
−
['d-dMy'] = { -- date format is d-d>y; reformat to:
 
−
['dmy'] = {'%s–%s %s %s', 'd', 'd2', 'm', 'y'}, -- for long/short reformatting
 
−
['mdy'] = {'%s %s–%s, %s', 'm', 'd', 'd2', 'y'}, -- |df=mdy -> Md-dy
 
−
},
 
−
['dM-dMy'] = { -- date format is dM-dMy; reformat to:
 
−
['dmy'] = {'%s %s – %s %s %s', 'd', 'm', 'd2', 'm2', 'y'}, -- for long/short reformatting
 
−
['mdy'] = {'%s %s – %s %s, %s', 'm', 'd', 'm2', 'd2', 'y'}, -- |df=mdy -> Md-Mdy
 
−
},
 
−
['Md-Mdy'] = { -- date format is Md-Mdy; reformat to:
 
−
['mdy'] = {'%s %s – %s %s, %s', 'm', 'd',  'm2', 'd2', 'y'}, -- for long/short reformatting
 
−
['dmy'] = {'%s %s – %s %s %s', 'd', 'm', 'd2', 'm2', 'y'}, -- |df=dmy -> dM-dMy
 
−
},
 
−
['dMy-dMy'] = { -- date format is dMy-dMy; reformat to:
 
−
['dmy'] = {'%s %s %s – %s %s %s', 'd', 'm', 'y', 'd2', 'm2', 'y2'}, -- for long/short reformatting
 
−
['mdy'] = {'%s %s, %s – %s %s, %s', 'm', 'd', 'y', 'm2', 'd2', 'y2'}, -- |df=mdy -> Mdy-Mdy
 
−
},
 
−
['Mdy-Mdy'] = { -- date format is Mdy-Mdy; reformat to:
 
−
['mdy'] = {'%s %s, %s – %s %s, %s', 'm', 'd', 'y', 'm2', 'd2', 'y2'}, -- for long/short reformatting
 
−
['dmy'] = {'%s %s %s – %s %s %s', 'd', 'm', 'y', 'd2', 'm2', 'y2'}, -- |df=dmy -> dMy-dMy
 
−
},
 
−
['My-My'] = { -- these for long/short reformatting
 
−
['any'] = {'%s %s – %s %s', 'm', 'y', 'm2', 'y2'}, -- dmy/mdy agnostic
 
−
},
 
−
['M-My'] = { -- these for long/short reformatting
 
−
['any'] = {'%s–%s %s', 'm', 'm2', 'y'}, -- dmy/mdy agnostic
 
−
},
 
−
['My'] = { -- these for long/short reformatting
 
−
['any'] = {'%s %s', 'm', 'y'}, -- dmy/mdy agnostic
 
−
},
 
−
-- ['yMd'] = { -- not supported at en.wiki
 
−
-- ['mdy'] = {'%s %s, %s', 'm', 'd', 'y'}, -- |df=mdy
 
−
-- ['dmy'] = {'%s %s %s', 'd', 'm', 'y'}, -- |df=dmy
 
−
-- ['ymd'] = {'%s-%s-%s', 'y', 'm', 'd'}, -- |df=ymd
 
−
-- },
 
−
}
 
−
 
 
−
 
 
−
local function reformatter (date, pattern_idx, format_param, mon_len)
 
−
if not in_array (pattern_idx, {'ymd', 'Mdy', 'Md-dy', 'dMy', 'yMd', 'd-dMy', 'dM-dMy', 'Md-Mdy', 'dMy-dMy', 'Mdy-Mdy', 'My-My', 'M-My', 'My'}) then
 
−
return; -- not in this set of date format patterns then not a reformattable date
 
−
end
 
−
 
−
if 'ymd' == format_param and in_array (pattern_idx, {'ymd', 'Md-dy', 'd-dMy', 'dM-dMy', 'Md-Mdy', 'dMy-dMy', 'Mdy-Mdy', 'My-My', 'M-My', 'My'}) then
 
−
return; -- ymd date ranges not supported at en.wiki; no point in reformatting ymd to ymd
 
−
end
 
−
 
 
−
if in_array (pattern_idx, {'My', 'M-My', 'My-My'}) then -- these are not dmy/mdy so can't be 'reformatted' into either
 
−
format_param = 'any'; -- so format-agnostic
 
−
end
 
−
 
 
−
-- yMd is not supported at en.wiki; when yMd is supported at your wiki, uncomment the next line
 
−
-- if 'yMd' == format_param and in_array (pattern_idx, {'yMd', 'Md-dy', 'd-dMy', 'dM-dMy', 'Md-Mdy', 'dMy-dMy', 'Mdy-Mdy'}) then -- these formats not convertable; yMd not supported at en.wiki
 
−
if 'yMd' == format_param then -- yMd not supported at en.wiki; when yMd is supported at your wiki, remove or comment-out this line
 
−
return; -- not a reformattable date
 
−
end
 
−
 
−
local c1, c2, c3, c4, c5, c6, c7; -- these hold the captures specified in patterns[pattern_idx][1]
 
−
c1, c2, c3, c4, c5, c6, c7 = mw.ustring.match (date, patterns[pattern_idx][1]); -- get the captures
 
−
 
 
−
local t = { -- table that holds k/v pairs of date parts from the captures and patterns[pattern_idx][2..]
 
−
[patterns[pattern_idx][2]] = c1; -- at minimum there is always one capture with a matching indicator letter
 
−
[patterns[pattern_idx][3] or 'x'] = c2; -- patterns can have a variable number of captures; each capture requires an indicator letter;
 
−
[patterns[pattern_idx][4] or 'x'] = c3; -- where there is no capture, there is no indicator letter so n in patterns[pattern_idx][n] will be nil;
 
−
[patterns[pattern_idx][5] or 'x'] = c4; -- the 'x' here spoofs an indicator letter to prevent 'table index is nil' error
 
−
[patterns[pattern_idx][6] or 'x'] = c5;
 
−
[patterns[pattern_idx][7] or 'x'] = c6;
 
−
[patterns[pattern_idx][8] or 'x'] = c7;
 
−
};
 
−
 
 
−
if t.a then -- if this date has an anchor year capture (all convertable date formats except ymd)
 
−
if t.y2 then -- for year range date formats
 
−
t.y2 = t.a; -- use the anchor year capture when reassembling the date
 
−
else -- here for single date formats (except ymd)
 
−
t.y = t.a; -- use the anchor year capture when reassembling the date
 
−
end
 
−
end
 
−
 
 
−
if tonumber(t.m) then -- if raw month is a number (converting from ymd)
 
−
if 's' == mon_len then -- if we are to use abbreviated month names
 
−
t.m = cfg.date_names['inv_local_short'][tonumber(t.m)]; -- convert it to a month name
 
−
else
 
−
t.m = cfg.date_names['inv_local_long'][tonumber(t.m)]; -- convert it to a month name
 
−
end
 
−
t.d = t.d:gsub ('0(%d)', '%1'); -- strip leading '0' from day if present
 
−
elseif 'ymd' == format_param then -- when converting to ymd
 
−
t.y = t.y:gsub ('%a', ''); -- strip CITREF disambiguator if present; anchor year already known so process can proceed; TODO: maint message?
 
−
if 1582 > tonumber (t.y) then -- ymd format dates not allowed before 1582
 
−
return;
 
−
end
 
−
t.m = string.format ('%02d', get_month_number (t.m)); -- make sure that month and day are two digits
 
−
t.d = string.format ('%02d', t.d);
 
−
elseif mon_len then -- if mon_len is set to either 'short' or 'long'
 
−
for _, mon in ipairs ({'m', 'm2'}) do -- because there can be two month names, check both
 
−
if t[mon] then
 
−
t[mon] = get_month_number (t[mon]); -- get the month number for this month (is length agnostic)
 
−
if 0 == t[mon] then return; end -- seasons and named dates can't be converted
 
−
t[mon] = (('s' == mon_len) and cfg.date_names['inv_local_short'][t[mon]]) or cfg.date_names['inv_local_long'][t[mon]]; -- fetch month name according to length
 
−
end
 
−
end
 
−
end
 
−
 
 
−
local new_date = string.format (re_formats[pattern_idx][format_param][1], -- format string
 
−
t[re_formats[pattern_idx][format_param][2]], -- named captures from t{}
 
−
t[re_formats[pattern_idx][format_param][3]],
 
−
t[re_formats[pattern_idx][format_param][4]],
 
−
t[re_formats[pattern_idx][format_param][5]],
 
−
t[re_formats[pattern_idx][format_param][6]],
 
−
t[re_formats[pattern_idx][format_param][7]],
 
−
t[re_formats[pattern_idx][format_param][8]]
 
−
);
 
−
 
 
−
return new_date;
 
−
end
 
−
 
 
−
 
 
−
--[[-------------------------< R E F O R M A T _ D A T E S >--------------------------------------------------
 
−
 
 
−
Reformats existing dates into the format specified by format.
 
−
 
 
−
format is one of several manual keywords: dmy, dmy-all, mdy, mdy-all, ymd, ymd-all.  The -all version includes
 
−
access- and archive-dates; otherwise these dates are not reformatted.
 
−
 
 
−
This function allows automatic date formatting.  In ~/Configuration, the article source is searched for one of
 
−
the {{use xxx dates}} templates.  If found, xxx becomes the global date format as xxx-all.  If |cs1-dates= in
 
−
{{use xxx dates}} has legitimate value then that value determines how cs1|2 dates will be rendered.  Legitimate
 
−
values for |cs1-dates= are:
 
−
l - all dates are rendered with long month names
 
−
ls - publication dates use long month names; access-/archive-dates use abbreviated month names
 
−
ly - publication dates use long month names; access-/archive-dates rendered in ymd format
 
−
s - all dates are rendered with abbreviated (short) month names
 
−
sy - publication dates use abbreviated month names; access-/archive-dates rendered in ymd format
 
−
y - all dates are rendered in ymd format
 
−
 
 
−
the format argument for automatic date formatting will be the format specified by {{use xxx dates}} with the
 
−
value supplied by |cs1-dates so one of: xxx-l, xxx-ls, xxx-ly, xxx-s, xxx-sy, xxx-y, or simply xxx (|cs1-dates=
 
−
empty, omitted, or invalid) where xxx shall be either of dmy or mdy.
 
−
 
 
−
dates are extracted from date_parameters_list, reformatted (if appropriate), and then written back into the
 
−
list in the new format.  Dates in date_parameters_list are presumed here to be valid (no errors).  This function
 
−
returns true when a date has been reformatted, false else.  Actual reformatting is done by reformatter().
 
−
 
 
−
]]
 
−
 
 
−
local function reformat_dates (date_parameters_list, format)
 
−
local all = false; -- set to false to skip access- and archive-dates
 
−
local len_p = 'l'; -- default publication date length shall be long
 
−
local len_a = 'l'; -- default access-/archive-date length shall be long
 
−
local result = false;
 
−
local new_date;
 
−
 
−
if format:match('%a+%-all') then -- manual df keyword; auto df keyword when length not specified in {{use xxx dates}};
 
−
format = format:match('(%a+)%-all'); -- extract the format
 
−
all = true; -- all dates are long format dates because this keyword doesn't specify length
 
−
elseif format:match('%a+%-[lsy][sy]?') then -- auto df keywords; internal only
 
−
all = true; -- auto df applies to all dates; use length specified by capture len_p for all dates
 
−
format, len_p, len_a = format:match('(%a+)%-([lsy])([sy]?)'); -- extract the format and length keywords
 
−
if 'y' == len_p then -- because allowed by MOS:DATEUNIFY (sort of) range dates and My dates not reformatted
 
−
format = 'ymd'; -- override {{use xxx dates}}
 
−
elseif (not is_set(len_a)) or (len_p == len_a) then -- no access-/archive-date length specified or same length as publication dates then
 
−
len_a = len_p; -- in case len_a not set
 
−
end
 
−
end -- else only publication dates and they are long
 
−
 
 
−
for param_name, param_val in pairs (date_parameters_list) do -- for each date-holding parameter in the list
 
−
if is_set (param_val.val) then -- if the parameter has a value
 
−
if not (not all and in_array (param_name, {'access-date', 'archive-date'})) then -- skip access- or archive-date unless format is xxx-all; yeah, ugly; TODO: find a better way
 
−
for pattern_idx, pattern in pairs (patterns) do
 
−
if mw.ustring.match (param_val.val, pattern[1]) then
 
−
if all and in_array (param_name, {'access-date', 'archive-date'}) then -- if this date is an access- or archive-date
 
−
new_date = reformatter (param_val.val, pattern_idx, (('y' == len_a) and 'ymd') or format, len_a); -- choose ymd or dmy/mdy according to len_a setting
 
−
else -- all other dates
 
−
new_date = reformatter (param_val.val, pattern_idx, format, len_p);
 
−
end
 
−
 
−
if new_date then -- set when date was reformatted
 
−
date_parameters_list[param_name].val = new_date; -- update date in date list
 
−
result = true; -- and announce that changes have been made
 
−
break;
 
−
end
 
−
end -- if
 
−
end -- for
 
−
end -- if
 
−
end -- if
 
−
end -- for
 
−
return result; -- declare boolean result and done
 
−
end
 
−
 
 
−
 
 
−
--[[--------------------------< 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|2
 
−
template 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 is_set (param_val.val) and
 
−
not mw.ustring.match (param_val.val, patterns.ymd[1]) then -- for those that are not ymd dates (ustring because here digits may not be Western)
 
−
param_val.val, n = param_val.val:gsub ('%-', '–'); -- replace any hyphen with ndash
 
−
if 0 ~= n then
 
−
date_parameters_list[param_name].val = param_val.val; -- update the list
 
−
result = true;
 
−
end
 
−
end
 
−
end
 
−
return result; -- so we know if any hyphens were replaced
 
−
end
 
−
 
 
−
 
 
−
--[[-------------------------< D A T E _ N A M E _ X L A T E >------------------------------------------------
 
−
 
 
−
Attempts to translate English date names to local-language date names using names supplied by MediaWiki's
 
−
date parser function.  This is simple name-for-name replacement and may not work for all languages.
 
−
 
 
−
if xlat_dig is true, this function will also translate Western (English) digits to the local language's digits.
 
−
This will also translate ymd dates.
 
−
 
 
−
]]
 
−
 
 
−
local function date_name_xlate (date_parameters_list, xlt_dig)
 
−
local xlate;
 
−
local mode; -- long or short month names
 
−
local modified = false;
 
−
local date;
 
−
 
−
local sources_t = {
 
−
{cfg.date_names.en.long, cfg.date_names.inv_local_long}, -- for translating long English month names to long local month names
 
−
{cfg.date_names.en.short, cfg.date_names.inv_local_short}, -- short month names
 
−
{cfg.date_names.en.quarter, cfg.date_names.inv_local_quarter}, -- quarter date names
 
−
{cfg.date_names.en.season, cfg.date_names.inv_local_season}, -- season date nam
 
−
{cfg.date_names.en.named, cfg.date_names.inv_local_named}, -- named dates
 
−
}
 
−
 
 
−
local function is_xlateable (month) -- local function to get local date name that replaces existing English-language date name
 
−
for _, date_names_t in ipairs (sources_t) do -- for each sequence table in date_names_t
 
−
if date_names_t[1][month] then -- if date name is English month (long or short), quarter, season or named and
 
−
if date_names_t[2][date_names_t[1][month]] then -- if there is a matching local date name
 
−
return date_names_t[2][date_names_t[1][month]]; -- return the local date name
 
−
end
 
−
end
 
−
end
 
−
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.val) then -- if the parameter has a value
 
−
date = param_val.val;
 
−
for month in mw.ustring.gmatch (date, '[%a ]+') do -- iterate through all date names in the date (single date or date range)
 
−
month = mw.text.trim (month); -- this because quarterly dates contain whitespace
 
−
xlate = is_xlateable (month); -- get translate <month>; returns translation or nil
 
−
 
−
if xlate then
 
−
date = mw.ustring.gsub (date, month, xlate); -- replace the English with the translation
 
−
date_parameters_list[param_name].val = date; -- save the translated date
 
−
modified = true;
 
−
end
 
−
end
 
−
 
 
−
if xlt_dig then -- shall we also translate digits?
 
−
date = date:gsub ('%d', cfg.date_names.xlate_digits); -- translate digits from Western to 'local digits'
 
−
date_parameters_list[param_name].val = date; -- save the translated date
 
−
modified = true;
 
−
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)
 
−
add_prop_cat = utilities_page_ptr.add_prop_cat ; -- import functions from selected Module:Citation/CS1/Utilities module
 
−
is_set = utilities_page_ptr.is_set;
 
−
in_array = utilities_page_ptr.in_array;
 
−
set_message = utilities_page_ptr.set_message;
 
−
substitute = utilities_page_ptr.substitute;
 
−
wrap_style = utilities_page_ptr.wrap_style;
 
−
 
 
−
cfg = cfg_table_ptr; -- import tables from selected Module:Citation/CS1/Configuration
 
−
end
 
−
 
 
−
 
 
−
--[[--------------------------< A R C H I V E _ D A T E _ C H E C K >------------------------------------------
 
−
 
 
−
Compare value in |archive-date= with the timestamp in Wayback machine urls.  Emits an error message when |archive-date=
 
−
does not match the timestamp.
 
−
 
 
−
]]
 
−
 
 
−
local function archive_date_check (archive_date, archive_url_timestamp)
 
−
local good, archive_date_ts = pcall (lang_object.formatDate, lang_object, 'Ymd', archive_date); -- |archive-date= value to YYYYMMDD format
 
−
-- local archive_date_ts = lang_object:formatDate ('Ymd', archive_date); -- |archive-date= value to YYYYMMDD format
 
−
 
 
−
if good then
 
−
if not archive_url_timestamp:find (archive_date_ts, 1, true) then -- plain text find; begin search at position 1
 
−
set_message ('err_archive_date_url_ts_mismatch'); -- emit an error message
 
−
end
 
−
end
 
−
end
 
−
 
 
−
 
 
−
--[[--------------------------< E X P O R T E D  F U N C T I O N S >------------------------------------------
 
−
]]
 
−
 
 
−
return { -- return exported functions
 
−
archive_date_check = archive_date_check,
 
−
date_hyphen_to_dash = date_hyphen_to_dash,
 
−
date_name_xlate = date_name_xlate,
 
−
dates = dates,
 
−
reformat_dates = reformat_dates,
 
−
set_selected_modules = set_selected_modules,
 
−
year_date_check = year_date_check,
 
−
}
 

Версия от 02:41, 4 сентября 2023

{{#lst:Module:Citation/CS1/doc|header}}

This module contains routines that support the Citation Style 1 and Citation Style 2 date formats for citations on Wikipedia. In particular, this module contains a suite of functions that validate date formats and content for the variety of date-holding parameters associated with cs1|2 citations.

{{#lst:Module:Citation/CS1/doc|module_components_table}} 

local p = {}

--[[--------------------------< I S _ V A L I D _ A C C E S S D A T E >----------------------------------------

returns true if:
	Wikipedia start date <= accessdate < today + 2 days

Wikipedia start date is 2001-01-15T00:00:00 UTC which is 979516800 seconds after 1970-01-01T00:00:00 UTC (the start of Unix time)
accessdate is the date provided in |accessdate= at time 00:00:00 UTC
today is the current date at time 00:00:00 UTC plus 48 hours
	if today is 2015-01-01T00:00:00 then
		adding 24 hours gives 2015-01-02T00:00:00 – one second more than today
		adding 24 hours gives 2015-01-03T00:00:00 – one second more than tomorrow

]]

local function is_valid_accessdate (accessdate)
	local lang = mw.getContentLanguage();
	local good1, good2;
	local access_ts, tomorrow_ts;												-- to hold unix time stamps representing the dates
		
	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
		access_ts = tonumber (access_ts);										-- convert to numbers for the comparison
		tomorrow_ts = tonumber (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;
	else
		return false;															-- accessdate out of range
	end
end

--[[--------------------------< G E T _ M O N T H _ N U M B E R >----------------------------------------------

returns a number according to the month in a date: 1 for January, etc.  Capitalization and spelling must be correct. If not a valid month, returns 0

]]

local function get_month_number (month)
local 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};
local short_months = {['Jan']=1, ['Feb']=2, ['Mar']=3, ['Apr']=4, ['May']=5, ['Jun']=6, ['Jul']=7, ['Aug']=8, ['Sep']=9, ['Oct']=10, ['Nov']=11, ['Dec']=12};
local temp;
	temp=long_months[month];
	if temp then return temp; end				-- if month is the long-form name
	temp=short_months[month];
	if temp then return temp; end				-- if month is the short-form name
	return 0;									-- misspelled, improper case, or not a month name
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

]]

local function get_season_number (season)
local season_list = {['Winter']=1, ['Spring']=2, ['Summer']=3, ['Fall']=4, ['Autumn']=4}
local temp;
	temp=season_list[season];
	if temp then return temp; end				-- if season is a valid name return its number
	return 0;									-- misspelled, improper case, or not a season name
end

--[[--------------------------< I S _ P R O P E R _ N A M E >--------------------------------------------------

returns a non-zero number if date contains a recognized proper name.  Capitalization and spelling must be correct.

]]

local function is_proper_name (name)
local name_list = {['Christmas']=1}
local temp;
	temp=name_list[name];
	if temp then return temp; end				-- if name is a valid name return its number
	return 0;									-- misspelled, improper case, or not a proper name
end

--[[--------------------------< I S _ V A L I D _ M O N T H _ O R _ S E A S O N >------------------------------

--returns true if month or season is valid (properly spelled, capitalized, abbreviated)

]]

local function is_valid_month_or_season (month_season)
	if 0 == get_month_number (month_season) then		-- if month text isn't one of the twelve months, might be a season
		if 0 == get_season_number (month_season) then	-- not a month, is it a season?
			return false;								-- return false not a month or one of the five seasons
		end
	end
	return true;
end


--[[--------------------------< I S _ V A L I D _ Y E A R >----------------------------------------------------

Function gets current year from the server and compares it to year from a citation parameter.  Years more than one year in the future are not acceptable.

]]

local function is_valid_year(year)
	if not is_set(year_limit) then
		year_limit = tonumber(os.date("%Y"))+1;			-- global variable so we only have to fetch it once
	end
	return tonumber(year) <= year_limit;				-- false if year is in the future more than one year
end

--[[
Returns true if day is less than or equal to the number of days in month and year is no farther into the future than next year; else returns false.

Assumes Julian calendar prior to year 1582 and Gregorian calendar thereafter. Accounts for Julian calendar leap years before 1582 and Gregorian leap years after 1582.
Where the two calendars overlap (1582 to approximately 1923) dates are assumed to be Gregorian.
]]
local function is_valid_date (year, month, day)
local days_in_month = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
local month_length;
	if not is_valid_year(year) then	-- no farther into the future than next year
		return false;
	end
	
	if (2==month) then							-- if February
		month_length = 28;						-- then 28 days unless
		if 1582 > tonumber(year) then			-- Julian calendar
			if 0==(year%4) then
				month_length = 29;
			end
		else									-- Gregorian calendar
			if (0==(year%4) and (0~=(year%100) or 0==(year%400))) then	-- is a leap year?
				month_length = 29;				-- if leap year then 29 days in February
			end
		end
	else
		month_length=days_in_month[month];
	end

	if tonumber (day) > month_length then
		return false;
	end
	return true;
end

--[[--------------------------< I S _ V A L I D _ M O N T H _ R A N G E _ S T Y L E >--------------------------

Months in a range are expected to have the same style: Jan–Mar or October–December but not February–Mar or Jul–August. 
There is a special test for May because it can be either short or long form.

Returns true when style for both months is the same

]]

local function is_valid_month_range_style (month1, month2)
local len1 = month1:len();
local len2 = month2:len();
	if len1 == len2 then
		return true;															-- both months are short form so return true
	elseif 'May' == month1 or 'May'== month2 then
		return true;															-- both months are long form so return true
	elseif 3 == len1 or 3 == len2 then
		return false;															-- months are mixed form so return false
	else
		return true;															-- both months are long form so return true
	end
end


--[[--------------------------< I S _ V A L I D _ M O N T H _ S E A S O N _ R A N G E >------------------------

Check a pair of months or seasons to see if both are valid members of a month or season pair.

Month pairs are expected to be left to right, earliest to latest in time.

Similarly, seasons are also left to right, earliest to latest in time.  There is an oddity with seasons: winter is assigned a 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.

]]

local function is_valid_month_season_range(range_start, range_end)
	local range_start_number = get_month_number (range_start);
	
	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 then							-- is start of range a season?
			if range_start_number < range_end_number then		-- range_start is a season
				return true;									-- return true when range_end is also a season and follows start season; else false
			end
			if 4 == range_start_number and 1 == range_end_number then	-- special case when range is Fall-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 range_end is not; or improper season sequence
	end

	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?
			return true;														-- proper order and same style
		end
	end
	return false;												-- range_start month number is greater than or equal to range end number; or range end isn't a month
end

--[[--------------------------< C H E C K _ D A T E >----------------------------------------------------------

Check date format to see that it is one of the formats approved by WP:DATESNO or WP:DATERANGE. Exception: only allowed range separator is endash.
Additionally, check the date to see that it is a real date: no 31 in 30-day months; no 29 February when not a leap year.  Months, both long-form and three
character abbreviations, and seasons must be spelled correctly. Future years beyond next year are not allowed.

If the date fails the format tests, this function returns false and does not return values for anchor_year and COinS_date.  When this happens, the date parameter is
used in the COinS metadata and the CITEREF identifier gets its year from the year parameter if present otherwise CITEREF does not get a date value.

Inputs:
	date_string - date string from date-holding parameters (date, year, accessdate, embargo, archivedate, etc.)

Returns:
	false if date string is not a real date; else
	true, anchor_year, COinS_date
		anchor_year can be used in CITEREF anchors
		COinS_date is date_string without anchor_year disambiguator if any
]]
local function check_date (date_string)
	local year;			-- assume that year2, months, and days are not used;
	local year2=0;		-- second year in a year range
	local month=0;
	local month2=0;		-- second month in a month range
	local day=0;
	local day2=0;		-- second day in a day range
	local anchor_year;
	local coins_date;

	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)");
		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;

	elseif date_string:match("^%a+ +[1-9]%d?, +[1-9]%d%d%d%a?$") then						-- month-initial: month day, year
		month, day, anchor_year, year=string.match(date_string, "(%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 date_string:match("^%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=string.match(date_string, "(%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);
		if 0 == month then return false; end												-- return false if month text isn't one of the twelve months

	elseif date_string:match("^[1-9]%d? +%a+ +[1-9]%d%d%d%a?$") then						-- day-initial: day month year
		day, month, anchor_year, year=string.match(date_string, "(%d%d*)%s*(%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 date_string:match("^[1-9]%d?–[1-9]%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=string.match(date_string, "(%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);
		if 0 == month then return false; end												-- return false if month text isn't one of the twelve months

	elseif date_string:match("^[1-9]%d? +%a+ – [1-9]%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=date_string:match("(%d%d?) +(%a+) – (%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);
		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
		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
		month = get_month_number (month);
		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) 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
		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) 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
		month = get_month_number (month);
		month2 = get_month_number (month2);

	elseif date_string:match("^%a+ +[1-9]%d%d%d–%d%d%a?$") then								-- special case Winter/Summer year-year (YYYY-YY); year separated with unspaced endash
		if nil == date_string:match("^Winter") and nil == date_string:match("^Summer") then return false end;	-- 'month' can only be Winter or Summer
		local century;
		year, century, anchor_year, year2=date_string:match("%a+ +((%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("^%a+ +[1-9]%d%d%d–[1-9]%d%d%d%a?$") then						-- special case Winter/Summer year-year; year separated with unspaced endash
		if nil == date_string:match("^Winter") and nil == date_string:match("^Summer") then return false end;	-- 'month' can only be Winter or Summer
		year, anchor_year, year2=date_string:match("%a+ +(%d%d%d%d)–((%d%d%d%d)%a?)");
		anchor_year=year..'–'..anchor_year;													-- assemble anchor_year from both years
		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("^%a+ +[1-9]%d%d%d% – %a+ +[1-9]%d%d%d%a?$") then				-- month/season year - month/season year; separated by spaced endash
		month, year, month2, anchor_year, year2=date_string:match("(%a+) +(%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
		if not is_valid_year(year2) then return false; end									-- no year farther in the future than next year
		if not((0 ~= get_month_number(month) and 0 ~= get_month_number(month2) and is_valid_month_range_style(month, month2)) or 	-- both must be month year, same month style
			(0 ~= get_season_number(month) and 0 ~= get_season_number(month2))) then return false; end								-- or season year, not mixed

	elseif date_string:match ("^%a+–%a+ +[1-9]%d%d%d%a?$") then								-- month/season range year; months separated by endash 
		month, month2, anchor_year, year=date_string:match ("(%a+)–(%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
		
	elseif date_string:match("^%a+ +%d%d%d%d%a?$") then							-- month/season year or proper-name year
		month, anchor_year, year=date_string:match("(%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

	elseif date_string:match("^[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=date_string:match("(%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 date_string:match("^[1-9]%d%d%d–%d%d%a?$") then						-- Year range: YYYY–YY; separated by unspaced endash
		local century;
		year, century, anchor_year, year2=date_string:match("((%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
		year2 = century..year2;													-- add the century to year2 for comparisons
		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 date_string:match("^[1-9]%d%d%d?%a?$") then							-- year; here accept either YYY or YYYY
		anchor_year, year=date_string:match("((%d%d%d%d?)%a?)");
		if false == is_valid_year(year) then
			return false;
		end

	else
		return false;											-- date format not one of the MOS:DATE approved formats
	end

	local result=true;											-- check whole dates for validity; assume true because not all dates will go through this test
	if 0 ~= year and 0 ~= month and 0 ~= day and 0 == year2 and 0 == month2 and 0 == day2 then		-- YMD (simple whole date)
		result=is_valid_date(year,month,day);

	elseif 0 ~= year and 0 ~= month and 0 ~= day and 0 == year2 and 0 == month2 and 0 ~= day2 then	-- YMD-d (day range)
		result=is_valid_date(year,month,day);
		result=result and is_valid_date(year,month,day2);

	elseif 0 ~= year and 0 ~= month and 0 ~= day and 0 == year2 and 0 ~= month2 and 0 ~= day2 then	-- YMD-md (day month range)
		result=is_valid_date(year,month,day);
		result=result and is_valid_date(year,month2,day2);

	elseif 0 ~= year and 0 ~= month and 0 ~= day and 0 ~= year2 and 0 ~= month2 and 0 ~= day2 then	-- YMD-ymd (day month year range)
		result=is_valid_date(year,month,day);
		result=result and is_valid_date(year2,month2,day2);
	end
	
	if false == result then return false; end
																-- if here, then date_string is valid; get coins_date from date_string (leave CITEREF disambiguator) ...
	coins_date=date_string:match("^(.+%d)%a?$");				-- last character of valid disambiguatable date is always a digit
	coins_date= mw.ustring.gsub(coins_date, "–", "-" );			-- ... and replace any ndash with a hyphen
	
	return true, anchor_year, coins_date;						-- format is good and date string represents a real date
end	

--[[--------------------------< D A T E S >--------------------------------------------------------------------

Cycle the date-holding parameters in passed table date_parameters_list through check_date() to check compliance with MOS:DATE. For all valid dates, check_date() returns
true. The |date= parameter test is unique, it is the only date holding parameter from which values for anchor_year (used in CITEREF identifiers) and COinS_date (used in
the COinS metadata) are derived.  The |date= parameter is the only date-holding parameter that is allowed to contain the no-date keywords "n.d." or "nd" (without quotes).

Unlike most error messages created in this module, only one error message is created by this function. Because all of the date holding parameters are processed serially,
a single error message is created as the dates are tested.

]]

--function p.dates(date_parameters_list)
local function dates(date_parameters_list)
	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 error_message = "";
	local mismatch = 0;
	local good_date = false;
	
	for k, v in pairs(date_parameters_list) do										-- for each date-holding parameter in the list
		if is_set(v) then															-- if the parameter has a value
			if v:match("^c%. [1-9]%d%d%d?%a?$") then								-- special case for c. year or with or without CITEREF disambiguator - only |date= and |year=
				local year = v:match("c%. ([1-9]%d%d%d?)%a?");						-- get the year portion so it can be tested
				if 'date'==k then
					anchor_year, COinS_date = v:match("((c%. [1-9]%d%d%d?)%a?)");	-- anchor year and COinS_date only from |date= parameter
					good_date = is_valid_year(year);
				elseif 'year'==k then
					good_date = is_valid_year(year);
				end
			elseif 'date'==k then													-- if the parameter is |date=
				if v:match("^n%.d%.%a?") then										-- if |date=n.d. with or without a CITEREF disambiguator
					good_date, anchor_year, COinS_date = true, v:match("((n%.d%.)%a?)");	--"n.d."; no error when date parameter is set to no date
				elseif v:match("^nd%a?$") then										-- if |date=nd with or without a CITEREF disambiguator
					good_date, anchor_year, COinS_date = true, v:match("((nd)%a?)");	--"nd";	no error when date parameter is set to no date
				else
					good_date, anchor_year, COinS_date = check_date (v);			-- go test the date
				end
			elseif 'accessdate'==k then												-- if the parameter is |date=
				good_date = check_date (v);											-- go test the date
				if true == good_date then											-- if the date is a valid date
					good_date = is_valid_accessdate (v);							-- is Wikipedia start date < accessdate < tomorrow's date?
				end
			else																	-- any other date-holding parameter
				good_date = check_date (v);											-- go test the date
			end
			if false==good_date then												-- assemble one error message so we don't add the tracking category multiple times
				if is_set(error_message) then										-- once we've added the first portion of the error message ...
					error_message=error_message .. ", ";							-- ... add a comma space separator
				end
				error_message=error_message .. "&#124;" .. k .. "=";				-- add the failed parameter
			end
		end
	end
	return anchor_year, COinS_date, error_message, mismatch;					-- and done
end

--[[--------------------------< Y E A R _ D A T E _ C H E C K >------------------------------------------------

Compare the value provided in |year= with the year value(s) provided in |date=.  This function returns a numeric value:
	0 - year value does not match the year value in date
	1 - (default) year value matches the year value in date or one of the year values when date contains two years
	2 - year value matches the year value in date when date is in the form YYYY-MM-DD and year is disambiguated (|year=YYYYx)

]]

local function year_date_check (year_string, date_string)
	local year;
	local date1;
	local date2;
	local result = 1;															-- result of the test; assume that the test passes
	
	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 date and year required YYYY-MM-DD and YYYYx
		date1 = date_string:match ('(%d%d%d%d)');
		year = year_string:match ('(%d%d%d%d)');
		if year ~= date1 then
			result = 0;															-- years don't match
		else
			result = 2;															-- years match; but because disambiguated, don't add to maint cat
		end
		
	elseif date_string:match ("%d%d%d%d?.-%d%d%d%d?") then						-- any of the standard 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
			result = 0;
		end

	elseif date_string:match ("%d%d%d%d[%s%-–]+%d%d") then						-- YYYY-YY date ranges
		local century;
		date1, century, date2 = date_string:match ("((%d%d)%d%d)[%s%-–]+(%d%d)");
		date2 = century..date2;													-- convert YY to YYYY
		if year ~= date1 and year ~= date2 then
			result = 0;
		end

	elseif date_string:match ("%d%d%d%d?") then									-- any of the standard formats of date with one year
		date1 = date_string:match ("(%d%d%d%d?)");
		if year ~= date1 then
			result = 0;
		end
	end
	return result;
end

return {dates = dates, year_date_check = year_date_check}						-- return exported functions
Источник — https://in.wiki/w/index.php?title=Модуль:Citation/CS1/Date_validation&oldid=10275