Module:Section link explained

-- This module implements .require('strict');

local checkType = require('libraryUtil').checkType

local p =

local function makeSectionLink(page, section, display) display = display or section page = page or -- MediaWiki doesn't allow these in 'page', so only need to do for 'section' if type(section)

'string' then section = string.gsub(section, "", "}") end return string.format('%s', page, section, display)end

local function normalizeTitle(title) title = mw.ustring.gsub(mw.ustring.gsub(title, "'", ""), '"', ) title = mw.ustring.gsub(title, "%b<>", "") return mw.title.new(title).prefixedTextend

function p._main(page, sections, options, title) -- Validate input. checkType('_main', 1, page, 'string', true) checkType('_main', 3, options, 'table', true) if sections

nil then sections = elseif type(sections)

'string' then sections = elseif type(sections) ~= 'table' then error(string.format("type error in argument #2 to '_main' " .. "(string, table or nil expected, got %s)", type(sections) ), 2) end options = options or title = title or mw.title.getCurrentTitle

-- Deal with blank page names elegantly if page and not page:find('%S') then page = nil options.nopage = true end

-- Make the link(s). local isShowingPage = not options.nopage if #sections <= 1 then local linkPage = page or if options.permalink then -- when oldid provided linkPage = 'Special:Permalink/' .. options.permalink; -- make Special:Permalink/oldid wikilink end local section = sections[1]; -- sections[1] must have a value local display = '§ ' .. section if isShowingPage then page = page or title.prefixedText if options.display and options.display ~= then if normalizeTitle(options.display)

normalizeTitle(page) then display = options.display .. ' ' .. display else error(string.format('Display title "%s" was ignored since it is ' .. "not equivalent to the page's actual title", options.display ), 0) end else display = page .. ' ' .. display end end return makeSectionLink(linkPage, section, display) else -- Multiple sections. First, make a list of the links to display. local ret = for i, section in ipairs(sections) do ret[i] = makeSectionLink(page, section) end

-- Assemble the list of links into a string with mw.text.listToText. -- We use the default separator for mw.text.listToText, but a custom -- conjunction. There is also a special case conjunction if we only -- have two links. local conjunction if #sections

2 then conjunction = '​ and ' else conjunction = ', and ' end ret = mw.text.listToText(ret, nil, conjunction)

-- Add the intro text. local intro = '§§ ' if isShowingPage then intro = (page or title.prefixedText) .. ' ' .. intro end ret = intro .. ret

return ret endend

function p.main(frame) local yesno = require('Module:Yesno') local args = require('Module:Arguments').getArgs(frame,)

for k, v in pairs(args) do -- replace underscores in the positional parameter values if 'number'

type(k) then if not yesno (args['keep-underscores']) then -- unless |keep-underscores=yes args[k] = mw.uri.decode (v, 'WIKI'); -- percent-decode; replace underscores with space characters else args[k] = mw.uri.decode (v, 'PATH'); -- percent-decode; retain underscores end end end

-- Sort the arguments. local page local sections, options =, for k, v in pairs(args) do if k

1 then -- Doing this in the loop because of a bug in -- when using pairs with deleted arguments. page = mw.text.decode(v, true) elseif type(k)

'number' then sections[k] = v else options[k] = v end end

options.nopage = yesno (options.nopage); -- make boolean -- Extract section from page, if present if page then local p, s = page:match('^(.-)#(.*)$') if p then page, sections[1] = p, s end end

-- Compress the sections array. local function compressArray(t) local nums, ret =, for num in pairs(t) do nums[#nums + 1] = num end table.sort(nums) for i, num in ipairs(nums) do ret[i] = t[num] end return ret end sections = compressArray(sections)

if not sections[1] then -- empty section parameter makes meaningless return ('

required section parameter(s) missing

'); -- emit error message and abandon end

return p._main(page, sections, options)end

return p