Editing Module:Citation/CS1/Date validation

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--[[--------------------------< F O R W A R D  D E C L A R A T I O N S >--------------------------------------
local p = {}
]]


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


--[[--------------------------< F O R W A R D  D E C L A R A T I O N S >--------------------------------------
]]
]]


local lang_object = mw.getContentLanguage(); -- used by is_valid_accessdate(), is_valid_year(), date_name_xlate(); TODO: move to ~/Configuration?
local is_set, in_array; -- imported functions from selected Module:Citation/CS1/Utilities
local year_limit; -- used by is_valid_year()
local cfg; -- table of tables imported from slected Module:Citation/CS1/Configuration
 


--[=[-------------------------< I S _ V A L I D _ A C C E S S D A T E >----------------------------------------
--[=[-------------------------< I S _ V A L I D _ A C C E S S D A T E >----------------------------------------
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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
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This function does not work if it is fed month names for languages other than English.  Wikimedia #time: parser
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
apparently doesn't understand non-Engish 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
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.
call this function with YYYY-MM-DD format dates.
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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 -- lang.formatDate() returns a timestamp in the local script which which tonumber() may not understand
access_ts = tonumber (access_ts) or lang_object:parseFormattedNumber (access_ts); -- convert to numbers for the comparison;
access_ts = tonumber (access_ts) or lang:parseFormattedNumber (access_ts); -- convert to numbers for the comparison;
tomorrow_ts = tonumber (tomorrow_ts) or lang_object:parseFormattedNumber (tomorrow_ts);
tomorrow_ts = tonumber (tomorrow_ts) or lang:parseFormattedNumber (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


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return false; -- accessdate out of range
return false; -- accessdate out of range
end
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)
return cfg.date_names['local'].long[month] or cfg.date_names['local'].short[month] or -- look for local names first
cfg.date_names['en'].long[month] or cfg.date_names['en'].short[month] or -- failing that, look for English names
0; -- not a recognized month name
end
end


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returns true and date value if that value has proper dmy, mdy, ymd format.
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
returns false and 9999 (embargoed forever) when date value is not proper format; assumes that when |embargo= is
set, the editor intended to embargo a PMC but |pmc-embargo-date= does not hold a single date.
set, the editor intended to embargo a pmc but |embargo= does not hold a single date.


]]
]]
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--[[--------------------------< G E T _ M O N T H _ 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 month in a date: 1 for January, etc.  Capitalization and spelling must be correct.
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
If not a valid month, returns 0


]]
Uses ISO DIS 8601 2016 part 2 §4.7  Divisions of a year for hemishpere-independent seasons:
 
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
cfg.date_names['en'].long[month] or cfg.date_names['en'].short[month] or -- failing that, look for English names
0; -- not a recognized 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: 21 for Spring, etc.  Capitalization and spelling
must be correct. If not a valid season, returns 0.
21-24 = Spring, Summer, Autumn, Winter, independent of “Hemisphere”
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:
These additional divisions not currently supported:
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37-39 = Quadrimester 1, Quadrimester 2, Quadrimester 3 (4 months each)
37-39 = Quadrimester 1, Quadrimester 2, Quadrimester 3 (4 months each)
40-41 = Semestral 1, Semestral-2 (6 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
return 0; -- season dates only supported by |date=
end
return cfg.date_names['local'].season[season] or -- look for local names first
return cfg.date_names['local'].season[season] or -- look for local names first
cfg.date_names['en'].season[season] or -- failing that, look for English names
cfg.date_names['en'].season[season] or -- failing that, look for English names
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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)
if 'date' ~= param then
return 0; -- quarter dates only supported by |date=
end
quarter = mw.ustring.gsub (quarter, ' +', ' '); -- special case replace multiple space chars with a single space char
return cfg.date_names['local'].quarter[quarter] or -- look for local names first
cfg.date_names['en'].quarter[quarter] or -- failing that, look for English names
0; -- not a recognized quarter name
end
 
 
--[[--------------------------< G E T _ P R O P E R _ N A M E _ 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 0 when <param> is not |date=


]]
]]


local function get_proper_name_number (name, param)
local function is_proper_name (name)
if 'date' ~= param then
return 0; -- proper-name dates only supported by |date=
end
return cfg.date_names['local'].named[name] or -- look for local names dates first
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
cfg.date_names['en'].named[name] or -- failing that, look for English names
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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 _ E L E M E N T _ N U M B E R <------------------------------------------
--returns true if month or season is valid (properly spelled, capitalized, abbreviated)
 
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 function is_valid_month_or_season (month_season)
local num;
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?
local funcs = {get_month_number, get_season_number, get_quarter_number, get_proper_name_number}; -- list of functions to execute in order
return false; -- return false not a month or one of the five seasons
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


--[[--------------------------< 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.


]]
]]
 
local year_limit;
local function is_valid_year (year)
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
end
 
return tonumber(year) <= year_limit; -- false if year is in the future more than one year
year = tonumber (year) or lang_object:parseFormattedNumber (year); -- convert to numbers for the comparison;
return year and (year <= year_limit) or false;
end
end


--[[--------------------------< I S _ V A L I D _ D A T E >----------------------------------------------------
--[[--------------------------< I S _ V A L I D _ D A T E >----------------------------------------------------
Returns true if day is less than or equal to the number of days in month and year is no farther into the future
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.
than next year; else returns false.
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month = tonumber(month); -- required for YYYY-MM-DD dates
month = tonumber(month); -- required for YYYY-MM-DD dates
if (2 == month) then -- if February
if (2==month) then -- if February
month_length = 28; -- then 28 days unless
month_length = 28; -- then 28 days unless
if 1582 > tonumber(year) then -- Julian calendar
if 1582 > tonumber(year) then -- Julian calendar
if 0 == (year%4) then -- is a leap year?
if 0==(year%4) then
month_length = 29; -- if leap year then 29 days in February
month_length = 29;
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


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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 >--------------------------
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if len1 == len2 then
if len1 == len2 then
return true; -- both months are short form so return true
return true; -- both months are short form so return true
elseif 'May' == month1 or 'May'== month2 then -- ToDo: I18N
elseif 'May' == month1 or 'May'== month2 then
return true; -- both months are long form so return true
return true; -- both months are long form so return true
elseif 3 == len1 or 3 == len2 then
elseif 3 == len1 or 3 == len2 then
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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
All season ranges are accepted as valid because there are publishers out there who have published a Summer–Spring YYYY issue so ... ok


]]
]]


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;
local range_end_number;
 
if 0 == range_start_number then -- is this a month range?
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_start_number = get_season_number (range_start); -- not a month; is it a season? get start season number
range_end_number = get_season_number (range_end, param); -- get end season number
range_end_number = get_season_number (range_end); -- get end season number


if (0 ~= range_start_number) and (0 ~= range_end_number) and (range_start_number ~= range_end_number) then
if (0 ~= range_start_number) and (0 ~= range_end_number) then
return true; -- any season pairing is accepted except when both are the same
return true; -- any season pairing is accepted
end
end
return false; -- range_start and/or range_end is not a season
return false; -- range_start and/or range_end is not a season
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-- here when range_start is a month
-- here when range_start is a month
range_end_number = get_month_number (range_end); -- get end month number
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?
if range_start_number < range_end_number then -- 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?
if is_valid_month_range_style (range_start, range_end) then -- do months have the same style?
return true; -- proper order and same style
return true; -- proper order and same style
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
return false; -- range_start month number is greater than or equal to range end number; or range end isn't a month
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the output table receives:
the output table receives:
rftdate: an ISO 8601 formatted date
rftdate: an IS8601 formatted date
rftchron: a free-form version of the date, usually without year which is in rftdate (season ranges and proper-name dates)
rftchron: a free-form version of the date, usually without year which is in rftdate (season ranges and propername dates)
rftssn: one of four season keywords: winter, spring, summer, fall (lowercase)
rftssn: one of four season keywords: winter, spring, summer, fall (lowercase)
rftquarter: one of four values: 1, 2, 3, 4


]]
]]
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local day = tonumber (input.day);
local day = tonumber (input.day);
if (0 ~= day) and -- day must have a value for this to be a whole date
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
(((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
((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
((1582 < year) and (1925 >= year))) then -- any date 1 January 1583 – 31 December 1925
tCOinS_date.inter_cal_cat = true; -- set category flag true
tCOinS_date.inter_cal_cat = true; -- set category flag true
end
end
-- end temporary Julian / Gregorian calendar uncertainty detection
-- end temporary Julian / Gergorian calendar uncertainty detection
if 1582 > tonumber(input.year) or 20 < tonumber(input.month) then -- Julian calendar or season so &rft.date gets year only
if 1582 > tonumber(input.year) or 20 < tonumber(input.month) then -- Julian calendar or season so &rft.date gets year only
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date = string.format ('%.4d/%.4d', tonumber(input.year), tonumber(input.year2)) -- assemble the date range
date = string.format ('%.4d/%.4d', tonumber(input.year), tonumber(input.year2)) -- assemble the date range
end
end
if 20 < tonumber(input.month) then -- if season or proper-name date
if 20 < tonumber(input.month) then -- if season or propername date
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
local season = {[24]='winter', [21]='spring', [22]='summer', [23]='fall', [99]='Christmas'}; -- seasons lowercase, no autumn; proper names use title case
if 0 == input.month2 then -- single season date
if 0 == input.month2 then -- single season date
if 40 < tonumber(input.month) then
if 30 <tonumber(input.month) then
tCOinS_date.rftchron = season[input.month]; -- proper-name dates
tCOinS_date.rftchron = season[input.month]; -- proper name dates
elseif 30 < tonumber(input.month) then
tCOinS_date.rftquarter = season[input.month]; -- quarters
else
else
tCOinS_date.rftssn = season[input.month]; -- seasons
tCOinS_date.rftssn = season[input.month]; -- seasons
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return;
return;
end
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?)$'}, -- year range: YYYY–YY; separated by unspaced endash
['ymx'] = {'^(%d%d%d%d)%-(%d%d)%-XX$', 'y', 'm'}, -- edtf year-initial numerical year-month-XX
['y'] = {'^((%d%d%d%d?)%a?)$'}, -- year; here accept either YYY or YYYY
}




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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 (DEBUG: not?) used in the COinS metadata and the CITEREF identifier gets
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.
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:
Line 480: Line 362:
]]
]]


local function check_date (date_string, param, tCOinS_date)
local function check_date (date_string, tCOinS_date, test_accessdate)
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$") then -- year-initial numerical year month day format
year, month, day = date_string:match (patterns['ymd'][1]);
year, month, day=string.match(date_string, "(%d%d%d%d)%-(%d%d)%-(%d%d)");
if 12 < tonumber(month) or 1 > tonumber(month) or 1582 > tonumber(year) or 0 == tonumber(day) then return false; end -- month or day number not valid or not Gregorian calendar
if 12 < tonumber(month) or 1 > tonumber(month) or 1582 > tonumber(year) or 0 == tonumber(day) then return false; end -- month or day number not valid or not Gregorian calendar
anchor_year = year;
anchor_year = year;
elseif mw.ustring.match(date_string, "^%D- +[1-9]%d?, +[1-9]%d%d%d%a?$") then -- month-initial: month day, year
elseif date_string:match (patterns['ymx'][1]) then -- year-initial numerical year month edtf format
month, day, anchor_year, year=mw.ustring.match(date_string, "(%D-) +(%d%d?),%s*((%d%d%d%d?)%a?)");
year, month = date_string:match (patterns['ymx'][1]);
if 12 < tonumber(month) or 1 > tonumber(month) or 1582 > tonumber(year) or not is_valid_year(year) then return false; end -- month number not valid or not Gregorian calendar or future year
anchor_year = year;
 
elseif mw.ustring.match(date_string, patterns['Mdy'][1]) then -- month-initial: month day, year
month, day, anchor_year, year = mw.ustring.match(date_string, patterns['Mdy'][1]);
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 mw.ustring.match(date_string, "^%D- +[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=mw.ustring.match(date_string, "(%D-) +(%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
month2=month; -- for metadata
year2 = year;
year2=year;


elseif mw.ustring.match(date_string, patterns['dMy'][1]) then -- day-initial: day month year
elseif mw.ustring.match(date_string, "^[1-9]%d? +%D- +[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=mw.ustring.match(date_string, "(%d%d*)%s*(%D-) +((%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 mw.ustring.match(date_string, "^[1-9]%d?[%-–][1-9]%d? +%D- +[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=mw.ustring.match(date_string, "(%d%d?)[%-–](%d%d?) +(%D-) +((%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 ]]
month2=month; -- for metadata
year2=year;


elseif mw.ustring.match(date_string, patterns['d-dMy'][1]) then -- day-range-initial: day–day month year; days are separated by endash
elseif mw.ustring.match(date_string, "^[1-9]%d? +%D- +[%-–] +[1-9]%d? +%D- +[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=mw.ustring.match(date_string, "(%d%d?) +(%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
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;
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
month = get_month_number (month); -- for metadata
month2 = get_month_number (month2);
month2 = get_month_number (month2);
year2 = year;
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 mw.ustring.match(date_string, "^%D- +[1-9]%d? +[%-–] +%D- +[1-9]%d?, +[1-9]%d%d%d%a?$") then -- month initial month-day-range: month day – month day, year; uses spaced endash
month, day, month2, day2, anchor_year, year = mw.ustring.match(date_string, patterns['Md-Mdy'][1]);
month, day, month2, day2, anchor_year, year=mw.ustring.match(date_string, "(%D-) +(%d%d?) +[%-–] +(%D-) +(%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); -- for metadata
month2 = get_month_number (month2);
month2 = get_month_number (month2);
year2 = year;
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 mw.ustring.match(date_string, "^[1-9]%d? +%D- +[1-9]%d%d%d +[%-–] +[1-9]%d? +%D- +[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=mw.ustring.match(date_string, "(%d%d?) +(%D-) +(%d%d%d%d) +[%-–] +(%d%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); -- for metadata
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 mw.ustring.match(date_string, "^%D- +[1-9]%d?, +[1-9]%d%d%d +[%-–] +%D- +[1-9]%d?, +[1-9]%d%d%d%a?$") then -- month initial month-day-year-range: month day, year – month day, year; uses spaced endash
month, day, year, month2, day2, anchor_year, year2 = mw.ustring.match(date_string, patterns['Mdy-Mdy'][1]);
month, day, year, month2, day2, anchor_year, year2=mw.ustring.match(date_string, "(%D-) +(%d%d?), +(%d%d%d%d) +[%-–] +(%D-) +(%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); -- for metadata
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 mw.ustring.match(date_string, "^%D- +[1-9]%d%d%d[%-–]%d%d%a?$") then -- special case Winter/Summer year-year (YYYY-YY); year separated with unspaced endash
local century;
local century;
month, year, century, anchor_year, year2 = mw.ustring.match(date_string, patterns['Sy4-y2'][1]);
month, year, century, anchor_year, year2=mw.ustring.match(date_string, "(%D-) +((%d%d)%d%d)[%-–]((%d%d)%a?)");
if 'Winter' ~= month and 'Summer' ~= month then return false end; -- 'month' can only be Winter or Summer
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);
month = get_season_number (month);


elseif mw.ustring.match(date_string, patterns['Sy-y'][1]) then -- special case Winter/Summer year-year; year separated with unspaced endash
elseif mw.ustring.match(date_string, "^%D- +[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]);
month, year, anchor_year, year2=mw.ustring.match(date_string, "(%D-) +(%d%d%d%d)[%-–]((%d%d%d%d)%a?)");
if 'Winter' ~= month and 'Summer' ~= month then return false end; -- 'month' can only be Winter or Summer
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
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); -- for metadata
month = get_season_number (month); -- for metadata


elseif mw.ustring.match(date_string, patterns['My-My'][1]) then -- month/season year - month/season year; separated by spaced endash
elseif mw.ustring.match(date_string, "^%D- +[1-9]%d%d%d +[%-–] +%D- +[1-9]%d%d%d%a?$") then -- month/season year - month/season year; separated by spaced endash
month, year, month2, anchor_year, year2 = mw.ustring.match(date_string, patterns['My-My'][1]);
month, year, month2, anchor_year, year2=mw.ustring.match(date_string, "(%D-) +(%d%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
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 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
month = get_month_number(month);
month = get_month_number(month);
month2 = get_month_number(month2);
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
elseif 0 ~= get_season_number(month) and 0 ~= get_season_number(month2) then -- both must be or season year, not mixed
month = get_season_number(month, param);
month = get_season_number(month);
month2 = get_season_number(month2, param);
month2 = get_season_number(month2);
else
else
return false;
return false;
end
end


elseif mw.ustring.match(date_string, patterns['M-My'][1]) then -- month/season range year; months separated by endash  
elseif mw.ustring.match(date_string, "^%D-[%-–]%D- +[1-9]%d%d%d%a?$") then -- month/season range year; months separated by endash  
month, month2, anchor_year, year = mw.ustring.match(date_string, patterns['M-My'][1]);
month, month2, anchor_year, year=mw.ustring.match(date_string, "(%D-)[%-–](%D-)%s*((%d%d%d%d)%a?)");
if (not is_valid_month_season_range(month, month2, param)) or (not is_valid_year(year)) then return false; end
if (not is_valid_month_season_range(month, month2)) or (not is_valid_year(year)) then return false; end
if 0 ~= get_month_number(month) then -- determined to be a valid range so just check this one to know if month or season
if 0 ~= get_month_number(month) then -- determined to be a valid range so just check this one to know if month or season
month = get_month_number(month);
month = get_month_number(month);
month2 = get_month_number(month2);
month2 = get_month_number(month2);
if 0 == month or 0 == month2 then return false; end
else
else
month = get_season_number(month, param);
month = get_season_number(month);
month2 = get_season_number(month2, param);
month2 = get_season_number(month2);
end
end
year2 = year;
year2=year;
elseif mw.ustring.match(date_string, patterns['My'][1]) then -- month/season/quarter/proper-name year
elseif mw.ustring.match(date_string, "^%D- +%d%d%d%d%a?$") then -- month/season year or proper-name year
month, anchor_year, year = mw.ustring.match(date_string, patterns['My'][1]);
month, anchor_year, year=mw.ustring.match(date_string, "(%D-)%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
if 0 ~= get_month_number(month) then -- determined to be a valid range so just check this one to know if month or season
month = get_month_number(month);
elseif 0 ~= get_season_number(month) then
month = get_season_number(month);
else
month = is_proper_name (month); -- must be proper name; not supported in COinS
end


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 mw.ustring.match(date_string, "^[1-9]%d%d%d?[%-–][1-9]%d%d%d?%a?$") then -- Year range: YYY-YYY or YYY-YYYY or YYYY–YYYY; separated by unspaced endash; 100-9999
year, anchor_year, year2 = mw.ustring.match(date_string, patterns['y-y'][1]);
year, anchor_year, year2=mw.ustring.match(date_string, "(%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 mw.ustring.match(date_string, "^[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=mw.ustring.match(date_string, "((%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 in_array (param, {'date', 'publication-date', 'year'}) then
add_prop_cat ('year_range_abbreviated');
end
 
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


elseif mw.ustring.match(date_string, patterns['y'][1]) then -- year; here accept either YYY or YYYY
elseif date_string:match("^[1-9]%d%d%d?%a?$") then -- year; here accept either YYY or YYYY
anchor_year, year = mw.ustring.match(date_string, patterns['y'][1]);
anchor_year, year=date_string:match("((%d%d%d%d?)%a?)");
if false == is_valid_year(year) then
if false == is_valid_year(year) then
return false;
return false;
Line 645: Line 512:
end
end


if 'access-date' == param then -- test accessdate here because we have numerical date parts
if test_accessdate then -- test accessdate here because we have numerical date parts
if 0 ~= year and 0 ~= month and 0 ~= day and -- all parts of a single date required
if 0 ~= year and 0 ~= month and 0 ~= day and -- all parts of a single date required
0 == year2 and 0 == month2 and 0 == day2 then -- none of these; accessdate must not be a range
0 == year2 and 0 == month2 and 0 == day2 then -- none of these; accessdate must not be a range
if not is_valid_accessdate(year .. '-' .. month .. '-' .. day) then
if not is_valid_accessdate (year..'-'..month..'-'..day) then
return false; -- return false when accessdate out of bounds
return false; -- return false when accessdate out of bounds
end
end
Line 658: Line 525:
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);
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
Line 676: Line 543:


if nil ~= tCOinS_date then -- this table only passed into this function when testing |date= parameter values
if nil ~= tCOinS_date then -- this table only passed into this function when testing |date= parameter values
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
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
end
end
Line 690: Line 557:


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)
local function dates(date_parameters_list, tCOinS_date)
local anchor_year; -- 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 COinS_date; -- will return as nil if the date being tested is not |date=
local COinS_date; -- will return as nil if the date being tested is not |date=
local embargo_date; -- if embargo date is a good dmy, mdy, ymd date then holds original value else reset to 9999
local embargo_date; -- if embargo date is a good dmy, mdy, ymd date then holds original value else reset to 9999
local error_message = "";
local good_date = false;
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.val) 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
v.val = mw.ustring.gsub (v.val, '%d', cfg.date_names.local_digits); -- translate 'local' digits to Western 0-9
if v.val:match("^c%. [1-9]%d%d%d?%a?$") then -- special case for c. year or with or without CITEREF disambiguator - only |date= and |year=
if v.val:match("^c%. [1-9]%d%d%d?%a?$") then -- special case for c. year or with or without CITEREF disambiguator - only |date= and |year=
local year = v.val: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.val: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?$") then -- ToDo: I18N -- if |date=n.d. with or without a CITEREF disambiguator
if v.val:match("^n%.d%.%a?$") 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.val:match("((n%.d%.)%a?)"); --"n.d."; no error when date parameter is set to no date
elseif v.val:match("^nd%a?$") then -- ToDo: I18N -- if |date=nd with or without a CITEREF disambiguator
elseif v.val:match("^nd%a?$") 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.val: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.val, tCOinS_date); -- go test the date
end
end
elseif 'year' == k then -- if the parameter is |year= it should hold only a year value
elseif 'year'==k then -- if the parameter is |year= it should hold only a year value
if v.val:match("^[1-9]%d%d%d?%a?$") then -- if |year = 3 or 4 digits only with or without a CITEREF disambiguator
if v.val:match("^[1-9]%d%d%d?%a?$") then -- if |year= 3 or 4 digits only with or without a CITEREF disambiguator
good_date, anchor_year, COinS_date = true, v.val:match("((%d+)%a?)");
good_date, anchor_year, COinS_date = true, v.val:match("((%d+)%a?)");
end
end
elseif 'pmc-embargo-date' == k then -- if the parameter is |pmc-embargo-date=
elseif 'access-date'==k then -- if the parameter is |date=
good_date = check_date (v.val, k); -- go test the date
good_date = check_date (v.val, nil, true); -- go test the date; nil is a placeholder; true is the test_accessdate flag
elseif 'embargo'==k then -- if the parameter is |embargo=
good_date = check_date (v.val); -- go test the date
if true == good_date then -- if the date is a valid date
if true == good_date then -- if the date is a valid date
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; no: returns 9999
good_date, embargo_date = is_valid_embargo_date (v.val); -- is |embargo= date a single dmy, mdy, or ymd formatted date? yes:returns embargo; no: returns 9999
end
end
else -- any other date-holding parameter
else -- any other date-holding parameter
good_date = check_date (v.val, k); -- go test the date
good_date = check_date (v.val); -- go test the date
end
end
if false == good_date then -- assemble one error message so we don't add the tracking category multiple times
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
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;" .. v.name .. "="; -- add the failed parameter
end
end
end
end
end
end
return anchor_year, embargo_date; -- and done
return anchor_year, embargo_date, error_message; -- and done
end
end


Line 742: Line 615:
--[[--------------------------< 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 numernic 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?)');


Line 777: Line 645:
end
end


elseif mw.ustring.match(date_string, "%d%d%d%d[%-–]%d%d") then -- YYYY-YY date ranges
elseif mw.ustring.match(date_string, "%d%d%d%d[%-–]%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 = mw.ustring.match(date_string, "((%d%d)%d%d)[%-–]+(%d%d)");
Line 790: Line 658:
result = 0;
result = 0;
end
end
else -- should never get here; this function called only when no other date errors
else
result = 0; -- no recognizable year in date
result = 0; -- no recognizable year in date
end
end
return result;
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


--[[-------------------------< R E F O R M A T  T A B L E S >------------------------------------------------
These table are used exclusively for reformatting dates


--[[--------------------------< 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
local source_patterns = { -- this table holds patterns that match allowed date formats used to extract date components
reformatted.  Does the grunt work for reformat_dates().
['dmy'] = '^(%d%d?)%s+(%a+)%s+(%d%d%d%d)$',
['mdy'] = '^(%a+)%s+(%d%d?),%s+(%d%d%d%d)$',
['ymd'] = '^(%d%d%d%d)%-(%d%d)-(%d%d)$',
}


The table re_formats maps pattern_idx (current format) and format_param (desired format) to a table that holds:
local short_formats = { -- this table holds format strings used by os.date() for short month names
format string used by string.format()
['dmy'] = '%e %b %Y',
identifier letters ('d', 'm', 'y', 'd2', 'm2', 'y2') that serve as indexes into a table t{} that holds captures
['mdy'] = '%b %e, %Y',
from mw.ustring.match() for the various date parts specified by  patterns[pattern_idx][1]
['ymd'] = '%F',
}


Items in patterns{} have the general form:
local long_formats = { -- this table holds format strings used by os.date() for long month names
['ymd'] = {'^(%d%d%d%d)%-(%d%d)%-(%d%d)$', 'y', 'm', 'd'}, where:
['dmy'] = '%e %B %Y',
['ymd'] is pattern_idx
['mdy'] = '%B %e, %Y',
patterns['ymd'][1] is the match pattern with captures for mw.ustring.match()
['ymd'] = '%F',
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
--[[-------------------------< G E T _ D M Y _ D A T E _ P A R T S >------------------------------------------
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
extracts year, month and day from DMY formatted date, places them in the source_date table, and returns.
to the capture identifier letters specified by patterns[pattern_idx][format_param][n] where n is 2..


]]
]]


local re_formats = {
local function get_dmy_date_parts (date, source_date)
['ymd'] = { -- date format is ymd; reformat to:
source_date.day, source_date.month, source_date.year = date:match (source_patterns['dmy']); -- get date components as strings
['mdy'] = {'%s %s, %s', 'm', 'd', 'y'}, -- |df=mdy
source_date.month = get_month_number (source_date.month); -- get month number
['dmy'] = {'%s %s %s', 'd', 'm', 'y'}, -- |df=dmy
end
-- ['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
-- },
}


--[[-------------------------< G E T _ M D Y _ D A T E _ P A R T S >------------------------------------------


local function reformatter (date, pattern_idx, format_param, mon_len)
extracts year, month and day from MDY formatted date, places them in the source_date table, and returns.
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; if yMd is supported at your wiki, uncomment the next line
local function get_mdy_date_parts (date, source_date)
-- 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
source_date.month, source_date.day, source_date.year = date:match (source_patterns['mdy']); -- get date components as strings
-- if yMd is supported at your wiki, remove or comment-out the next line
source_date.month = get_month_number (source_date.month); -- get month number
if 'yMd' == format_param then -- yMd not supported at en.wiki
end
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
--[[-------------------------< G E T _ Y M D _ D A T E _ P A R T S >------------------------------------------
t.y = t.a; -- use the anchor year capture when reassembling the date
end


if tonumber(t.m) then -- if raw month is a number (converting from ymd)
extracts year, month and day from YMD formatted date, places them in the source_date table, and returns.
if 's' == mon_len then -- if we are to use abbreviated month names
t.m = cfg.date_names['inv_local_s'][tonumber(t.m)]; -- convert it to a month name
else
t.m = cfg.date_names['inv_local_l'][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
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_s'][t[mon]]) or cfg.date_names['inv_local_l'][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;
local function get_ymd_date_parts (date, source_date)
source_date.year, source_date.month, source_date.day = date:match (source_patterns['ymd']); -- get date components as strings
end
end


Line 965: Line 727:
--[[-------------------------< R E F O R M A T _ D A T E S >--------------------------------------------------
--[[-------------------------< R E F O R M A T _ D A T E S >--------------------------------------------------


Reformats existing dates into the format specified by format.
Reformats existing dates into the format specified by format and short.


format is one of several manual keywords: dmy, dmy-all, mdy, mdy-all, ymd, ymd-all.  The -all version includes
format is one of several keywords: dmy, dmy-all, mdy, mdy-all, ymd, ymd-all.  The all version includes access- and
access- and archive-dates; otherwise these dates are not reformatted.
archive-dates; otherwise these dates are not reformatted


This function allows automatic date formatting.  In ~/Configuration, the article source is searched for one of
Date ranges, season dates, proper name dates are not currently supported.
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
For i18n:  This code works only at en.wiki because os.date() doesn't support any languages other than English.
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=
mw.getContentLanguage():formatDate() will work at non-English wikis only when the date format is yyyy-mm-dd. This is
empty, omitted, or invalid) where xxx shall be either of dmy or mdy.
the same issue that plagues is_valid_accessdate()


dates are extracted from date_parameters_list, reformatted (if appropriate), and then written back into the
It is possible that a solution like that written for ht:Module:Citation/CS1/Date_validation date_name_xlate() could be applied to this problem
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 function reformat_dates (date_parameters_list, format, short)
local all = false; -- set to false to skip access- and archive-dates
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 result = false;
local new_date;
local format_str;
local source_date = {};
if format:match('%a+%-all') then -- manual df keyword; auto df keyword when length not specified in {{use xxx dates}};
if format:match('%a+%-all') then
format = format:match('(%a+)%-all'); -- extract the format
format = format:match('(%a+)%-all'); -- extract the format
all = true; -- all dates are long format dates because this keyword doesn't specify length
all = true; -- set to true to format access- and archive-dates
elseif format:match('%a+%-[lsy][sy]?') then -- auto df keywords; internal only
end
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
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 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
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
for source, pattern in pairs (source_patterns) do
if mw.ustring.match (param_val.val, pattern[1]) then
if param_val.val:match (pattern) then
if all and in_array (param_name, {'access-date', 'archive-date'}) then -- if this date is an access- or archive-date
if 'ymd' == source then
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
get_ymd_date_parts (param_val.val, source_date); -- get the date parts into the source_date table
else -- all other dates
elseif 'dmy' == source then
new_date = reformatter (param_val.val, pattern_idx, format, len_p);
get_dmy_date_parts (param_val.val, source_date); -- get the date parts into the source_date table
elseif 'mdy' == source then
get_mdy_date_parts (param_val.val, source_date); -- get the date parts into the source_date table
end
if 'ymd' == format and 1582 > tonumber(source_date.year) then -- ymd format dates not allowed before 1582
return false; -- abandon reformatting
end
end
if new_date then -- set when date was reformatted
if short then
date_parameters_list[param_name].val = new_date; -- update date in date list
format_str = short_formats[format];
result = true; -- and announce that changes have been made
else
format_str = long_formats[format];
end
end
-- convert date and save;
date_parameters_list[param_name].val = mw.text.trim (os.date (format_str, os.time(source_date))); -- strip leading space when single digit day and %e is first format
result = true;
end -- if
end -- if
end -- for
end -- for
Line 1,031: Line 783:
end -- if
end -- if
end -- for
end -- for
return result; -- declare boolean result and done
return result; -- declare result and done
end
end


Line 1,048: Line 800:
local n;
local n;
for param_name, param_val in pairs(date_parameters_list) do -- for each date-holding parameter in the list
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
if is_set (param_val.val) then
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)
if not mw.ustring.match (param_val.val, '%d%d%d%d%-%d%d%-%d%d') 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
param_val.val, n = param_val.val:gsub ('%-', '–'); -- replace any hyphen with ndash
if 0 ~= n then
if 0 ~= n then
date_parameters_list[param_name].val = param_val.val; -- update the list
date_parameters_list[param_name].val = param_val.val; -- update the list
result = true;
result = true;
end
end
end
end
end
end
end
return result; -- so we know if any hyphens were replaced
return result; -- so we know if any hyphens were replaced
end
--[[--------------------------< E D T F _ T R A N S F O R M >--------------------------------------------------
Loops through the list of date-holding parameters and converts any EDTF formatted dates to MOS compliant dates.
Only YYY-MM-XX supported at this time. Not called if the cs1|2 template has any date errors.
must be done before reformat_dates() and before date_hyphen_to_dash()
Modifies the date_parameters_list and returns true if transformation is performed, else returns false.
]]
local function edtf_transform (date_parameters_list)
local result = false;
local source_date = {};
for param_name, param_val in pairs(date_parameters_list) do -- for each date-holding parameter in the list
if is_set(param_val.val) and param_val.val:match (patterns.ymx[1]) then -- if parameter is set and is an EDTF dates
source_date.year, source_date.month = param_val.val:match (patterns.ymx[1]); -- get year and month number
source_date.day = 1; -- required by os.time()
date_parameters_list[param_name].val = mw.text.trim (os.date ('%B %Y', os.time (source_date)));
result = true;
end
end
return result; -- so we know if a transform was done
end
end


Line 1,093: Line 819:
date parser function.  This is simple name-for-name replacement and may not work for all languages.
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.
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.
This will also translate ymd dates.


]]
]]


local function date_name_xlate (date_parameters_list, xlt_dig)
local function date_name_xlate (date_parameters_list, xlt_dig)
local xlate;
local xlate;
local mode; -- long or short month names
local mode; -- long or short month names
Line 1,116: Line 842:
end
end
if mode then -- might be a season
if mode then -- might be a season
xlate = lang_object:formatDate(mode, '1' .. month); -- translate the month name to this local language
xlate = mw.getContentLanguage():formatDate(mode, '1' .. month); -- translate the month name to this local language
date = mw.ustring.gsub (date, month, xlate); -- replace the English with the translation
date = mw.ustring.gsub (date, month, xlate); -- replace the English with the translation
date_parameters_list[param_name].val = date; -- save the translated date
date_parameters_list[param_name].val = date; -- save the translated date
modified = true;
modified = true;
end
end
Line 1,125: Line 851:


if xlt_dig then -- shall we also translate digits?
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 = 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
date_parameters_list[param_name].val = date; -- save the translated date
modified = true;
modified = true;
Line 1,133: Line 859:
return modified;
return modified;
end
end




Line 1,143: Line 869:


local function set_selected_modules (cfg_table_ptr, utilities_page_ptr)
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; -- import functions from selected Module:Citation/CS1/Utilities module
is_set = utilities_page_ptr.is_set;
in_array = utilities_page_ptr.in_array; -- import functions from selected Module:Citation/CS1/Utilities module
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
cfg = cfg_table_ptr; -- import tables from selected Module:Citation/CS1/Configuration
end
end




--[[--------------------------< E X P O R T E D  F U N C T I O N S >------------------------------------------
]]


return { -- return exported functions
return { -- return exported functions
Line 1,163: Line 882:
date_hyphen_to_dash = date_hyphen_to_dash,
date_hyphen_to_dash = date_hyphen_to_dash,
date_name_xlate = date_name_xlate,
date_name_xlate = date_name_xlate,
edtf_transform = edtf_transform,
set_selected_modules = set_selected_modules
set_selected_modules = set_selected_modules
}
}
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