require('strict')
local p = {}
p.main = function(frame)
local args = require('Module:Arguments').getArgs(frame)
local title = args.page and mw.title.new(args.page) or mw.title.getCurrentTitle()
local cfg = {
forms = {'C T of I', 'I C T', 'C I T', 'C, I T'}
}
local class, importance, topic
for _, form in pairs(cfg.forms) do
local offsets, order = {}, {}
for _, s in ipairs{'C', 'I', 'T'} do
table.insert(offsets, {letter = s, offset = form:find(s)})
end
table.sort(offsets, function(m, n) return m.offset<n.offset end)
for n, v in ipairs(offsets) do
order[v.letter] = n
end
local form2 = form
:gsub('C', '_C_'):gsub('I', '_I_'):gsub('T', '_T_')
:gsub('_C_', '(%a+)-Class')
:gsub('_I_', '(%a+)-importance')
:gsub('_T_', '(.+) %a+$')
local pattern = '^' .. form2 .. '$'
local m1, m2, m3 = title.text:match(pattern)
if m1 then -- match found
local m = {m1, m2, m3}
class = m[order.C]
importance = m[order.I]
topic = m[order.T]
break
end
end
return class, importance, topic
end
return p
