local p = {}
local function cleanup( rtarget )
rtarget = mw.text.trim( rtarget )
rtarget = mw.ustring.gsub( rtarget, '^1%s*=%s*', '' )
rtarget = string.gsub( rtarget, '^[Cc]ategory:', '' )
return rtarget
end
--Returns the target of {{Category redirect}}, if it exists, else returns the original cat.
function p.rtarget( cat, frame )
cat = string.gsub( cat, '^[Cc]ategory:', '' ) --"!" in cat not recognized by mw.title.makeTitle() otherwise
if string.match( cat, '[|]' ) then
return cat
end
local catcontent = mw.title.makeTitle( 'Category', cat or '' ):getContent() --makeTitle() allows ':' in cat names
if string.match( catcontent or '', '{{ *[Cc]at' ) then --regex common to all possible calls
catcontent = mw.ustring.gsub( catcontent, '|%s*keep%s*=%s*[yY]?[eE]?[sS]?%s*', '' ) --remove other params
local getRegex = require('Module:Template redirect regex').main
local tregex = getRegex('Category redirect')
for _, v in pairs (tregex) do
local found = mw.ustring.match( catcontent, v..'%s*|' )
if found then --refine
local rtarget = mw.ustring.match( catcontent, v..'%s*|%s*([^{|}]+)}}' ) or --{{Category redirect|...}} (most common)
mw.ustring.match( catcontent, v..'%s*|%s*([^{|}]+)|' ) --{{Category redirect|...|...}} (2nd most common)
if rtarget then --normal, plain text target
return cleanup(rtarget)
else
local ty_regex = '%s*|%s*([^{|}]*{{([^{|}]+)}}[^{|}]*)' --$1 nests $2
local rtarget_orig, ty = mw.ustring.match( catcontent, v..ty_regex )
if rtarget_orig then --{{Category redirect|...{{Title year}}... (least common)
local ty_eval = frame:expandTemplate{ title = ty, args = { page = cat } } --frame:newChild doesn't work, use 'page' param instead
local rtarget_eval = mw.ustring.gsub( rtarget_orig, '{{%s*'..ty..'%s*}}', ty_eval )
return cleanup(rtarget_eval)
else --potential TODO: 1) +loop for multiple templates, 2) allow sub-parameters
return cat
end end end end end
return cat
end
function p.main( frame )
local args = frame:getParent().args
local cat = mw.text.trim( args[1] or '' )
if (cat == '') or (cat == nil) then
return ''
end
return p.rtarget( cat, frame )
end
return p
