local getArgs = require('Module:Arguments').getArgs
local default_error_category = "[[Category:Pages using infobox television with nonstandard dates]]"
local p = {}
function p.start_end_date_template_validation(frame)
local args = getArgs(frame)
local error_category = args.error_category or default_error_category
local start_date = args.first_aired or args.released or args.airdate or args.release_date or args.airdate_overall
if start_date then
if not start_date:find("dtstart") then
return error_category
end
end
local end_date = args.last_aired
if end_date then
if not end_date:find("dtend") and end_date ~= "present" then
return error_category
end
end
end
function p.dates(frame)
local returnval
local args = getArgs(frame)
if table.getn(args) < 2 then
if args['1'] == nil and args['2'] == nil then
return ''
elseif args['1'] == nil then
return args['2']
elseif args['2'] == nil then
return args['1']
end
end
args['1'] = args['1']:gsub(" "," ")
args['2'] = args['2']:gsub(" "," ")
local dmy = false
local pr1, m1, d1, y1, su1 = string.match(args['1'], '(.-)(%u%a+)%s(%d+),%s(%d+)(.*)')
local pr2, m2, d2, y2, su2 = string.match(args['2'], '(.-)(%u%a+)%s(%d+),%s(%d+)(.*)')
if y1 == nil then
dmy = true
pr1, d1, m1, y1, su1 = string.match(args['1'], '(.-)(%d%d?)%s(%a+)%s(%d+)(.*)')
pr2, d2, m2, y2, su2 = string.match(args['2'], '(.-)(%d%d?)%s(%a+)%s(%d+)(.*)')
end
local dash = ' –<br />'
if y1 ~= nil and y2 ~= nil then
su1 = su1 or ''
su2 = su2 or ''
local MONTHS = {January=1, February=2, March=3, April=4, May=5, June=6, July=7, August=8, September=9, October=10, November=11, December=12}
local diff = os.time({year=y2, month=MONTHS[m2], day=d2, hour=0, min=0, sec=0}) - os.time({year=y1, month=MONTHS[m1], day=d1, hour=0, min=0, sec=0})
if diff < 0 then
returnval = 'Invalid date range'
else
if y1 == y2 then
if dmy == false then
returnval = pr1 .. m1 .. ' ' .. d1 .. su1 .. dash .. pr2 .. m2 ..' '.. d2 ..', '.. y2 .. su2
else
returnval = pr1 .. d1 .. ' ' .. m1 .. su1 .. dash .. pr2 .. d2 .. ' ' .. m2 .. ' ' .. y2 .. su2
end
else
if dmy == false then
returnval = pr1 .. m1 .. ' ' .. d1 ..', '.. y1 .. su1 .. dash .. pr2 .. m2 .. ' '.. d2 .. ', ' .. y2 .. su2
else
returnval = pr1 .. d1 .. ' ' .. m1 ..' '.. y1 .. su1 .. dash .. pr2 .. d2 .. ' '.. m2 .. ' ' .. y2 .. su2
end
end
end
else
returnval = args['1']..dash..args['2'];
end
return returnval;
end
return p
