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require "Амодуль:No globals"  local Time = {}  --[[ Check if a value is a number in the given range @param mixed value @param number min @param number max @return boolean ]]-- local function validateNumberInRange( value, min, max ) return type( value ) == 'number' and value >= min and value <= max end  --Internal functions --[[ Validate a time defintion @param table definition data @return boolean ]]-- local function validate( definition ) --Validate constantes if not Time.knowsPrecision( definition.precision ) or ( definition.calendar ~= Time.CALENDAR.GREGORIAN and definition.calendar ~= Time.CALENDAR.JULIAN ) then return false end  --Validate year if not (type( definition.year ) == 'number' or (definition.year == nil and precision == Time.PRECISION.DAY)) then return false end if definition.precision <= Time.PRECISION.YEAR then return true end  --Validate month if not validateNumberInRange( definition.month, 1, 12 ) then return false end if definition.precision <= Time.PRECISION.MONTH then return true end  --Validate day if not validateNumberInRange( definition.day, 1, 31 ) then return false end if definition.precision <= Time.PRECISION.DAY then return true end  --Validate hour if not validateNumberInRange( definition.hour, 0, 23 ) then return false end if definition.precision <= Time.PRECISION.HOUR then return true end  --Validate minute if not validateNumberInRange( definition.minute, 0, 59 ) then return false end if definition.precision <= Time.PRECISION.MINUTE then return true end  --Validate second if not validateNumberInRange( definition.second, 0, 60 ) then return false end  return true end  --[[ Try to find the relevant precision for a time definition @param table time definition @return number the precision ]]-- local function guessPrecision( definition ) if definition.month == nil then return Time.PRECISION.YEAR elseif definition.day == nil then return Time.PRECISION.MONTH elseif definition.hour == nil then return Time.PRECISION.DAY elseif definition.minute == nil then return Time.PRECISION.HOUR elseif definition.second == nil then return Time.PRECISION.MINUTE else return Time.PRECISION.SECOND end end  --[[ Try to find the relevant calendar for a time definition @param table time definition @return string the calendar name ]]-- local function guessCalendar( definition ) if definition.year ~= nil and definition.year < 1583 and definition.precision > Time.PRECISION.MONTH then return Time.CALENDAR.JULIAN else return Time.CALENDAR.GREGORIAN end end  --[[ Parse an ISO 8601 string and return it as a time definition @param string iso the iso datetime @param boolean withoutRecurrence concider date in the format XX-XX as year-month and not month-day @return table ]]-- local function parseIso8601( iso, withoutRecurrence ) local definition = {}  --Split date and time iso = mw.text.trim( iso:upper() ) local beginMatch, endMatch, date, time, offset = iso:find( '([%+%-]?[%d%-]+)[T ]?([%d%.:]*)([Z%+%-]?[%d:]*)' )  if beginMatch ~= 1 or endMatch ~= iso:len() then --iso is not a valid ISO string return {} end  --date if date ~= nil then local isBC = false if date:sub( 1, 1 ) == '-' then isBC = true date = date:sub( 2, date:len() ) end local parts = mw.text.split( date, '-' ) if not withoutRecurrence and table.maxn( parts ) == 2 and parts[1]:len() == 2 then --MM-DD case definition.month = tonumber( parts[1] ) definition.day = tonumber( parts[2] ) else if isBC then definition.year = -1 * tonumber( parts[1] ) - 1 --Years BC are counted since 0 and not -1 else definition.year = tonumber( parts[1] ) end definition.month = tonumber( parts[2] ) definition.day = tonumber( parts[3] ) end end  --time if time ~= nil then local parts = mw.text.split( time, ':' ) definition.hour = tonumber( parts[1] ) definition.minute = tonumber( parts[2] ) definition.second = tonumber( parts[3] ) end  --ofset if offset ~= nil then if offset == 'Z' then definition.utcoffset = '+00:00' else definition.utcoffset = offset end end  return definition end  --[[ Format UTC offset for ISO output @param string offset UTC offset @return string UTC offset for ISO ]]-- local function formatUtcOffsetForIso( offset ) if offset == '+00:00' then return 'Z' else return offset end end  --[[ Prepend as mutch as needed the character c to the string str in order to to have a string of length length @param mixed str @param string c @param number length @return string ]]-- local function prepend(str, c, length) str = tostring( str ) while str:len() < length do str = c .. str end return str end  local function eq(t1, t2) return not (t1 < t2 or t2 < t1) end  local function lt(t1, t2) if t1.calendar ~= t2.calendar then -- ... end if t1.year ~= t2.year then return t1.year < t2.year end if t1.month ~= t2.month then return t1.month < t2.month end return t1.day < t2.day end  --Public interface --[[ Build a new Time @param table definition definition of the time @return Time|nil ]]-- function Time.new( definition ) --Default values if definition.precision == nil then definition.precision = guessPrecision( definition ) end if definition.calendar == nil then definition.calendar = guessCalendar( definition ) end  if not validate( definition ) then return nil end  local time = { year = definition.year or nil, month = definition.month or 1, day = definition.day or 1, hour = definition.hour or 0, minute = definition.minute or 0, second = definition.second or 0, utcoffset = definition.utcoffset or '+00:00', calendar = definition.calendar or Time.CALENDAR.GREGORIAN, precision = definition.precision or 0 }  setmetatable( time, { __index = Time,         __lt = lt,         __eq = eq, __tostring = function( self ) return self:toString() end } )  return time end  --[[ Build a new Time from an ISO 8601 datetime @param string iso the time as ISO string @param boolean withoutRecurrence concider date in the format XX-XX as year-month and not month-day @return Time|nil ]]-- function Time.newFromIso8601( iso, withoutRecurrence ) return Time.new( parseIso8601( iso, withoutRecurrence ) ) end  --[[ Build a new Time from a Wikidata time value @param table wikidataValue the time as represented by Wikidata @return Time|nil ]]-- function Time.newFromWikidataValue( wikidataValue ) local definition = parseIso8601( wikidataValue.time ) definition.precision = wikidataValue.precision  if wikidataValue.calendarmodel == 'http://www.wikidata.org/entity/Q1985727' then definition.calendar = Time.CALENDAR.GREGORIAN elseif wikidataValue.calendarmodel == 'http://www.wikidata.org/entity/Q1985786' then definition.calendar = Time.CALENDAR.JULIAN else return nil end  return Time.new( definition ) end  --[[ Return a Time as a ISO 8601 string @return string ]]-- function Time:toIso8601() local iso = '' if self.year ~= nil then if self.year < 0 then  --Years BC are counted since 0 and not -1 iso = '-' .. prepend( -1 * self.year - 1, '0', 4 ) else iso = prepend( self.year, '0', 4 ) end end  --month if self.precision < Time.PRECISION.MONTH then return iso end if self.iso ~= '' then iso = iso .. '-' end iso = iso .. prepend( self.month, '0', 2 )  --day if self.precision < Time.PRECISION.DAY then return iso end iso = iso .. '-' .. prepend( self.day, '0', 2 )  --hour if self.precision < Time.PRECISION.HOUR then return iso end iso = iso .. 'T' .. prepend( self.hour, '0', 2 )  --minute if self.precision < Time.PRECISION.MINUTE then return iso .. formatUtcOffsetForIso( self.utcoffset ) end iso = iso .. ':' .. prepend( self.minute, '0', 2 )  --second if self.precision < Time.PRECISION.SECOND then return iso .. formatUtcOffsetForIso( self.utcoffset ) end return iso .. ':' .. prepend( self.second, '0', 2 ) .. formatUtcOffsetForIso( self.utcoffset ) end  --[[ Return a Time as a string @param mw.language|string|nil language to use. By default the content language. @return string ]]-- function Time:toString( language ) if language == nil then language = mw.language.getContentLanguage() elseif type( language ) == 'string' then language = mw.language.new( language ) end  --return language:formatDate( 'r', self:toIso8601() ) return self:toIso8601() --TODO: improve end  --[[ Return a Time in HTMl (with a  @param mw.language|string|nil language to use. By default the content language. @param table|nil attributes table of attributes to add to the  @return string ]]-- function Time:toHtml( language, attributes ) if attributes == nil then attributes = {} end attributes['datetime'] = self:toIso8601() return mw.text.tag( 'time', attributes, self:toString( language ) ) end  --[[ All possible precisions for a Time (same ids as Wikibase) ]]-- Time.PRECISION = { GY      = 0, --Gigayear MY100   = 1, --100 Megayears MY10    = 2, --10 Megayears MY      = 3, --Megayear KY100   = 4, --100 Kiloyears KY10    = 5, --10 Kiloyears KY      = 6, --Kiloyear YEAR100 = 7, --100 years YEAR10  = 8, --10 years YEAR    = 9, MONTH   = 10, DAY     = 11, HOUR    = 12, MINUTE  = 13, SECOND  = 14 }  --[[ Check if the precision is known @param number precision ID @return boolean ]]-- function Time.knowsPrecision( precision ) for _, id in pairs( Time.PRECISION ) do if id == precision then return true end end return false end  --[[ Supported calendar models ]]-- Time.CALENDAR = { GREGORIAN = 'Gregorian', JULIAN = 'Julian' }  return Time

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