Documentation for this module may be created at Module:Time ago/doc
-- Implement [[Template:Time ago]]
local numberSpell, yesno -- lazy load
function numberSpell(arg)
numberSpell = require('Module:NumberSpell')._main
return numberSpell(arg)
end
function yesno(arg)
yesno = require('Module:Yesno')
return yesno(arg)
end
local p = {}
-- Table to convert entered text values to numeric values.
local timeText = {
['seconds'] = 1,
['minutes'] = 60,
['hours'] = 3600,
['days'] = 86400,
['weeks'] = 604800,
['months'] = 2629800, -- 365.25 * 24 * 60 * 60 / 12
['years'] = 31557600
}
-- Table containing tables of possible units to use in output.
local timeUnits = {
[1] = { 'second', 'seconds', "second's", "seconds'" },
[60] = { 'minute', 'minutes', "minutes'", "minutes'" },
[3600] = { 'hour', 'hours', "hour's", "hours'" },
[86400] = { 'day', 'days', "day's", "days'" },
[604800] = { 'week', 'weeks', "week's", "weeks'", unit = 'w' },
[2629800] = { 'month', 'months', "month's", "months'", unit = 'm' },
[31557600] = { 'year', 'years', "year's", "years'", unit = 'y' }
}
function p._main( args )
-- Initialize variables
local lang = mw.language.getContentLanguage()
local auto_magnitude_num
local min_magnitude_num
local magnitude = args.magnitude
local min_magnitude = args.min_magnitude
local purge = args.purge
-- Add a purge link if something (usually "yes") is entered into the purge parameter
if purge then
purge = ' <span class="plainlinks">([' .. mw.title.getCurrentTitle():fullUrl('action=purge') .. ' purge])</span>'
else
purge = ''
end
-- Check that the entered timestamp is valid. If it isn't, then give an error message.
local success, inputTime = pcall( lang.formatDate, lang, 'xnU', args[1] )
if not success then
return '<strong class="error">Error: first parameter cannot be parsed as a date or time.</strong>'
end
-- Store the difference between the current time and the inputted time, as well as its absolute value.
local timeDiff = lang:formatDate( 'xnU' ) - inputTime
local absTimeDiff = math.abs( timeDiff )
if magnitude then
auto_magnitude_num = 0
min_magnitude_num = timeText[magnitude]
else
-- Calculate the appropriate unit of time if it was not specified as an argument.
local autoMagnitudeData = {
{ factor = 2, amn = 31557600 },
{ factor = 2, amn = 2629800 },
{ factor = 2, amn = 86400 },
{ factor = 2, amn = 3600 },
{ factor = 2, amn = 60 }
}
for _, t in ipairs( autoMagnitudeData ) do
if absTimeDiff / t.amn >= t.factor then
auto_magnitude_num = t.amn
break
end
end
auto_magnitude_num = auto_magnitude_num or 1
if min_magnitude then
min_magnitude_num = timeText[min_magnitude]
else
min_magnitude_num = -1
end
end
if not min_magnitude_num then
-- Default to seconds if an invalid magnitude is entered.
min_magnitude_num = 1
end
local result_num
local magnitude_num = math.max( min_magnitude_num, auto_magnitude_num )
local unit = timeUnits[magnitude_num].unit
if unit and absTimeDiff >= 864000 then
local Date = require('Module:Date')._Date
local input = lang:formatDate('Y-m-d H:i:s', args[1]) -- Date needs a clean date
input = Date(input)
if input then
local id
if input.hour == 0 and input.minute == 0 then
id = 'currentdate'
else
id = 'currentdatetime'
end
result_num = (Date(id) - input):age(unit)
end
end
result_num = result_num or math.floor ( absTimeDiff / magnitude_num )
local punctuation_key, suffix
if timeDiff >= 0 then -- Past
if result_num == 1 then
punctuation_key = 1
else
punctuation_key = 2
end
if args.ago == '' then
suffix = ''
else
suffix = ' ' .. (args.ago or 'ago')
end
else -- Future
if args.ago == '' then
suffix = ''
if result_num == 1 then
punctuation_key = 1
else
punctuation_key = 2
end
else
suffix = ' time'
if result_num == 1 then
punctuation_key = 3
else
punctuation_key = 4
end
end
end
local result_unit = timeUnits[ magnitude_num ][ punctuation_key ]
-- Convert numerals to words if appropriate.
local spell_out = args.spellout
local spell_out_max = tonumber(args.spelloutmax)
local result_num_text
if spell_out and (
( spell_out == 'auto' and 1 <= result_num and result_num <= 9 and result_num <= ( spell_out_max or 9 ) ) or
( yesno( spell_out ) and 1 <= result_num and result_num <= 100 and result_num <= ( spell_out_max or 100 ) )
)
then
result_num_text = numberSpell( result_num )
else
result_num_text = tostring( result_num )
end
-- numeric or string
local numeric_out = args.numeric
local result = ""
if numeric_out then
result = tostring( result_num )
else
result = result_num_text .. ' ' .. result_unit .. suffix -- Spaces for suffix have been added in earlier.
end
return result .. purge
end
function p.main( frame )
local args = require( 'Module:Arguments' ).getArgs( frame, {
valueFunc = function( k, v )
if v then
v = v:match( '^%s*(.-)%s*$' ) -- Trim whitespace.
if k == 'ago' or v ~= '' then
return v
end
end
return nil
end,
wrappers = 'Template:Time ago'
})
return p._main( args )
end
return p