Module:Transcluder

-- Module:Transcluder is a general-purpose transclusion engine -- Documentation https://www.mediawiki.org/wiki/Module:Transcluder -- By User:Sophivorus, User:Certes & others -- Version 1.1 -- License CC-BY-SA-3.0

local p = {}

-- Helper function to test for truthy and falsy values -- @todo Somehow internationalize it local function truthy(value) if not value or value == '' or value == 0 or value == '0' or value == 'false' or value == 'no' or value == 'non' then return false end return true end

-- Helper function to match from a list of regular expressions -- Like so: match pre..list[1]..post or pre..list[2]..post or ... local function matchAny(text, pre, list, post, init) local match = {} for i = 1, #list do match = { mw.ustring.match(text, pre .. list[i] .. post, init) } if match[1] then return unpack(match) end end return nil end

-- Like matchAny but for Category/File links with less overhead local function matchAnyLink(text, list) local match for _, v in ipairs(list) do match = string.match(text, '%[%[%s*' .. v .. '%s*:.*%]%]') if match then break end end return match end

-- Helper function to escape a string for use in regexes local function escapeString(str) return string.gsub(str, '[%^%$%(%)%.%[%]%*%+%-%?%%]', '%%%0') end

-- Helper function to remove a string from a text local function removeString(text, str) local pattern = escapeString(str) if #pattern > 9999 then -- strings longer than 10000 bytes can't be put into regexes pattern = escapeString(mw.ustring.sub(str, 1, 999)) .. '.-' .. escapeString(mw.ustring.sub(str, -999)) end return string.gsub(text, pattern, '') end

-- Helper function to convert a comma-separated list of numbers or min-max ranges into a list of booleans -- @param flags Comma-separated list of numbers or min-max ranges, for example '1,3-5' -- @return Map from integers to booleans, for example {1=true,2=false,3=true,4=true,5=true} -- @return Boolean indicating whether the flags should be treated as a blacklist or not local function parseFlags(value) local flags = {} local blacklist = false

if not value then return nil, false end

if type(value) == 'number' then if value < 0 then value = -value blacklist = true end flags = { [value] = true }

elseif type(value) == 'string' then if string.sub(value, 1, 1) == '-' then blacklist = true value = string.sub(value, 2) end local ranges = mw.text.split(value, ',') -- split ranges: '1,3-5' to {'1','3-5'} for _, range in pairs(ranges) do			range = mw.text.trim(range) local min, max = mw.ustring.match(range, '^(%d+)%s*[-–—]%s*(%d+)$') -- '3-5' to min=3 max=5 if not max then min, max = string.match(range, '^((%d+))$') end -- '1' to min=1 max=1 if max then for i = min, max do flags[i] = true end else flags[range] = true -- if we reach this point, the string had the form 'a,b,c' rather than '1,2,3' end end

-- List has the form { [1] = false, [2] = true, ['c'] = false } -- Convert it to { [1] = true, [2] = true, ['c'] = true } -- But if ANY value is set to false, treat the list as a blacklist elseif type(value) == 'table' then for i, v in pairs(value) do			if v == false then blacklist = true end flags[i] = true end end

return flags, blacklist end

-- Helper function to see if a value matches any of the given flags local function matchFlag(value, flags) if not value then return false end value = tostring(value) local lang = mw.language.getContentLanguage for flag in pairs(flags) do		if value == tostring(flag) or lang:lcfirst(value) == flag or lang:ucfirst(value) == flag or ( not tonumber(flag) and mw.ustring.match(value, flag) ) then return true end end end

-- Helper function to convert template arguments into an array of options fit for get local function parseArgs(frame) local args = {} for key, value in pairs(frame:getParent.args) do args[key] = value end for key, value in pairs(frame.args) do args[key] = value end -- args from Lua calls have priority over parent args from template return args end

-- Error handling function -- Throws a Lua error or returns an empty string if error reporting is disabled local function throwError(key, value) local TNT = require('Module:TNT') local ok, message = pcall(TNT.format, 'I18n/Module:Transcluder.tab', 'error-' .. key, value) if not ok then message = key end error(message, 2) end

-- Error handling function -- Returns a wiki friendly error or an empty string if error reporting is disabled local function getError(key, value) local TNT = require('Module:TNT') local ok, message = pcall(TNT.format, 'I18n/Module:Transcluder.tab', 'error-' .. key, value) if not ok then message = key end message = mw.html.create('div'):addClass('error'):wikitext(message) return message end

-- Helper function to get the local name of a namespace and all its aliases -- @param name Canonical name of the namespace, for example 'File' -- @return Local name of the namespace and all aliases, for example {'File','Image','Archivo','Imagen'} local function getNamespaces(name) local namespaces = mw.clone(mw.site.namespaces[name].aliases) -- Clone because https://en.wikipedia.org/w/index.php?diff=1056921358 table.insert(namespaces, mw.site.namespaces[name].name) table.insert(namespaces, mw.site.namespaces[name].canonicalName) return namespaces end

-- Get the page wikitext, following redirects -- Also returns the page name, or the target page name if a redirect was followed, or false if no page was found -- For file pages, returns the content of the file description page local function getText(page, noFollow) local title = mw.title.new(page) if not title then return false, false end

local target = title.redirectTarget if target and not noFollow then title = target end

local text = title:getContent if not text then return false, title.prefixedText end

-- Remove tags text = string.gsub(text, '.-', '') -- remove noinclude bits

-- Keep tags if string.find(text, 'onlyinclude') then -- avoid expensive search if possible text = text :gsub(' .- ', '') -- remove text between onlyinclude sections :gsub('^.- ', '') -- remove text before first onlyinclude section :gsub(' .*', '') -- remove text after last onlyinclude section end

return text, title.prefixedText end

-- Get the requested files from the given wikitext. -- @param text Required. Wikitext to parse. -- @param flags Range of files to return, for example 2 or '1,3-5'. Omit to return all files. -- @return Sequence of strings containing the wikitext of the requested files. -- @return Original wikitext minus requested files. local function getFiles(text, flags) local files = {} local flags, blacklist = parseFlags(flags) local fileNamespaces = getNamespaces('File') local name local count = 0 for file in string.gmatch(text, '%b[]') do		if matchAnyLink(file, fileNamespaces) then name = string.match(file, '%[%[[^:]-:([^]|]+)')			count = count + 1			if not blacklist and ( not flags or flags[count] or matchFlag(name, flags) )			or blacklist and flags and not flags[count] and not matchFlag(name, flags) then				table.insert(files, file)			else				text = removeString(text, file)			end		end	end

return files, text end

-- Get the requested tables from the given wikitext. -- @param text Required. Wikitext to parse. -- @param flags Range of tables to return, for example 2 or '1,3-5'. Omit to return all tables. -- @return Sequence of strings containing the wikitext of the requested tables. -- @return Original wikitext minus requested tables. local function getTables(text, flags) local tables = {} local flags, blacklist = parseFlags(flags) local id	local count = 0 for t in string.gmatch('\n' .. text, '\n%b{}') do		if string.sub(t, 1, 3) == '\n{|' then id = string.match(t, '\n{|[^\n]-id%s*=%s*["\']?([^"\'\n]+)["\']?[^\n]*\n')			count = count + 1			if not blacklist and ( not flags or flags[count] or flags[id] )			or blacklist and flags and not flags[count] and not flags[id] then				table.insert(tables, t)			else				text = removeString(text, t)			end		end	end	return tables, text end

-- Get the requested templates from the given wikitext. -- @param text Required. Wikitext to parse. -- @param flags Range of templates to return, for example 2 or '1,3-5'. Omit to return all templates. -- @return Sequence of strings containing the wikitext of the requested templates. -- @return Original wikitext minus requested templates. local function getTemplates(text, flags) local templates = {} local flags, blacklist = parseFlags(flags) local name local count = 0 for template in string.gmatch(text, '{%b{}}') do		if string.sub(template, 1, 3) ~= '{{#' then -- skip parser functions like #if name = mw.text.trim( string.match(template, '{{([^}|\n]+)') ) -- get the template name count = count + 1 if not blacklist and ( not flags or flags[count] or matchFlag(name, flags) ) or blacklist and flags and not flags[count] and not matchFlag(name, flags) then table.insert(templates, template) else text = removeString(text, template) end end end return templates, text end

-- Get the requested template parameters from the given wikitext. -- @param text Required. Wikitext to parse. -- @param flags Range of parameters to return, for example 2 or '1,3-5'. Omit to return all parameters. -- @return Map from parameter name to value, NOT IN THE ORIGINAL ORDER -- @return Original wikitext minus requested parameters. local function getParameters(text, flags) local parameters = {} local flags, blacklist = parseFlags(flags) local params, count, parts, key, value for template in string.gmatch(text, '{%b{}}') do		params = string.match(template, '{{[^|}]-|(.+)}}') if params then count = 0 -- Temporarily replace pipes in subtemplates, tables and links to avoid chaos for subtemplate in string.gmatch(params, '%b{}') do				params = string.gsub(params, escapeString(subtemplate), string.gsub(string.gsub(subtemplate, '%%', '%%%%'), '|', '@@@') ) end for link in string.gmatch(params, '%b[]') do				params = string.gsub(params, escapeString( mw.ustring.gsub(link, '%%', '%%%%') ), string.gsub(link, '|', '@@@') ) end for parameter in mw.text.gsplit(params, '|') do				parts = mw.text.split(parameter, '=') key = mw.text.trim(parts[1]) value = table.concat(parts, '=', 2) if value == '' then value = key count = count + 1 key = count else value = mw.text.trim(value) end value = string.gsub(value, '@@@', '|') if not blacklist and ( not flags or matchFlag(key, flags) ) or blacklist and flags and not matchFlag(key, flags) then parameters[key] = value else text = removeString(text, parameter) end end end end return parameters, text end

-- Get the requested lists from the given wikitext. -- @param text Required. Wikitext to parse. -- @param flags Range of lists to return, for example 2 or '1,3-5'. Omit to return all lists. -- @return Sequence of strings containing the wikitext of the requested lists. -- @return Original wikitext minus requested lists. local function getLists(text, flags) local lists = {} local flags, blacklist = parseFlags(flags) local count = 0 for list in string.gmatch('\n' .. text .. '\n\n', '\n([*#].-)\n[^*#]') do		count = count + 1 if not blacklist and ( not flags or flags[count] ) or blacklist and flags and not flags[count] then table.insert(lists, list) else text = removeString(text, list) end end return lists, text end

-- Get the requested paragraphs from the given wikitext. -- @param text Required. Wikitext to parse. -- @param flags Range of paragraphs to return, for example 2 or '1,3-5'. Omit to return all paragraphs. -- @return Sequence of strings containing the wikitext of the requested paragraphs. -- @return Original wikitext minus requested paragraphs. local function getParagraphs(text, flags) local paragraphs = {} local flags, blacklist = parseFlags(flags)

-- Remove non-paragraphs local elements local temp = '\n' .. text .. '\n' elements, temp = getLists(temp, 0) -- remove lists elements, temp = getFiles(temp, 0) -- remove files temp = mw.text.trim((temp :gsub('\n%b{}\n', '\n%0\n') -- add spacing between tables and block templates :gsub('\n%b{}\n', '\n') -- remove tables and block templates :gsub('\n==+[^=]+==+\n', '\n') -- remove section titles ))

-- Assume that anything remaining is a paragraph local count = 0 for paragraph in mw.text.gsplit(temp, '\n\n+') do		if mw.text.trim(paragraph) ~= '' then count = count + 1 if not blacklist and ( not flags or flags[count] ) or blacklist and flags and not flags[count] then table.insert(paragraphs, paragraph) else text = removeString(text, paragraph) end end end

return paragraphs, text end

-- Get the requested categories from the given wikitext. -- @param text Required. Wikitext to parse. -- @param flags Range of categories to return, for example 2 or '1,3-5'. Omit to return all categories. -- @return Sequence of strings containing the wikitext of the requested categories. -- @return Original wikitext minus requested categories. local function getCategories(text, flags) local categories = {} local flags, blacklist = parseFlags(flags) local categoryNamespaces = getNamespaces('Category') local name local count = 0 for category in string.gmatch(text, '%b[]') do		if matchAnyLink(category, categoryNamespaces) then name = string.match(category, '%[%[[^:]-:([^]|]+)')			count = count + 1			if not blacklist and ( not flags or flags[count] or matchFlag(name, flags) )			or blacklist and flags and not flags[count] and not matchFlag(name, flags) then				table.insert(categories, category)			else				text = removeString(text, category)			end		end	end	return categories, text end

-- Get the requested references from the given wikitext. -- @param text Required. Wikitext to parse. -- @param flags Range of references to return, for example 2 or '1,3-5'. Omit to return all references. -- @return Sequence of strings containing the wikitext of the requested references. -- @return Original wikitext minus requested references. local function getReferences(text, flags) local references = {}

-- Remove all references, including citations, when 0 references are requested -- This is kind of hacky but currently necessary because the rest of the code -- doesn't remove citations like if Foo is defined elsewhere if flags and not truthy(flags) then text = string.gsub(text, '<%s*[Rr][Ee][Ff][^>/]*>.-<%s*/%s*[Rr][Ee][Ff]%s*>', '') text = string.gsub(text, '<%s*[Rr][Ee][Ff][^>/]*/%s*>', '') return references, text end

local flags, blacklist = parseFlags(flags) local name local count = 0 for reference in string.gmatch(text, '<%s*[Rr][Ee][Ff][^>/]*>.-<%s*/%s*[Rr][Ee][Ff]%s*>') do		name = string.match(reference, '<%s*[Rr][Ee][Ff][^>]*name%s*=%s*["\']?([^"\'>/]+)["\']?[^>]*%s*>')		count = count + 1		if not blacklist and ( not flags or flags[count] or matchFlag(name, flags) )		or blacklist and flags and not flags[count] and not matchFlag(name, flags) then			table.insert(references, reference)		else			text = removeString(text, reference)			if name then				for citation in string.gmatch(text, '<%s*[Rr][Ee][Ff][^>]*name%s*=%s*["\']?' .. escapeString(name) .. '["\']?[^/>]*/%s*>') do					text = removeString(text, citation)				end			end		end	end	return references, text end

-- Get the lead section from the given wikitext. -- @param text Required. Wikitext to parse. -- @return Wikitext of the lead section. local function getLead(text) text = string.gsub('\n' .. text, '\n==.*', '') text = mw.text.trim(text) if not text then return throwError('lead-empty') end return text end

-- Get the requested sections from the given wikitext. -- @param text Required. Wikitext to parse. -- @param flags Range of sections to return, for example 2 or '1,3-5'. Omit to return all sections. -- @return Sequence of strings containing the wikitext of the requested sections. -- @return Original wikitext minus requested sections. local function getSections(text, flags) local sections = {} local flags, blacklist = parseFlags(flags) local count = 0 local prefix, section, suffix for title in string.gmatch('\n' .. text .. '\n==', '\n==+%s*([^=]+)%s*==+') do		count = count + 1 prefix, section, suffix = string.match('\n' .. text .. '\n==', '\n==+%s*' .. escapeString(title) .. '%s*==+(.-)\n==') if not blacklist and ( not flags or flags[count] or matchFlag(title, flags) ) or blacklist and flags and not flags[count] and not matchFlag(title, flags) then sections[title] = section else text = string.sub(text, 1, prefix) .. string.sub(text, suffix) text = string.gsub(text, '\n?==$', '') -- remove the trailing \n== end end return sections, text end

-- Get the requested section or tag from the given wikitext (including subsections). -- @param text Required. Wikitext to parse. -- @param section Required. Title of the section to get (in wikitext), for example 'History' or 'History of Athens'. -- @return Wikitext of the requested section. local function getSection(text, section) section = mw.text.trim(section) local escapedSection = escapeString(section) -- First check if the section title matches a tag if string.find(text, '<%s*[Ss]ection%s+begin%s*=%s*["\']?%s*' .. escapedSection .. '%s*["\']?%s*/>') then -- avoid expensive search if possible text = mw.text.trim((text :gsub('<%s*[Ss]ection%s+end=%s*["\']?%s*'.. escapedSection ..'%s*["\']?%s*/>.-<%s*[Ss]ection%s+begin%s*=%s*["\']?%s*' .. escapedSection .. '%s*["\']?%s*/>', '') -- remove text between section tags :gsub('^.-<%s*[Ss]ection%s+begin%s*=%s*["\']?%s*' .. escapedSection .. '%s*["\']?%s*/>', '') -- remove text before first section tag :gsub('<%s*[Ss]ection%s+end=%s*["\']?%s*'.. escapedSection ..'%s*["\']?%s*/>.*', '') -- remove text after last section tag ))		if text == '' then return throwError('section-tag-empty', section) end return text end local level, text = string.match('\n' .. text .. '\n', '\n(==+)%s*' .. escapedSection .. '%s*==.-\n(.*)') if not text then return throwError('section-not-found', section) end local nextSection = '\n==' .. string.rep('=?', #level - 2) .. '[^=].*'	text = string.gsub(text, nextSection, '') -- remove later sections with headings at this level or higher text = mw.text.trim(text) if text == '' then return throwError('section-empty', section) end return text end

-- Replace the first call to each reference defined outside of the text for the full reference, to prevent undefined references -- Then prefix the page title to the reference names to prevent conflicts -- that is, replace  for  -- and also for -- also remove reference groups:  for  -- and  for -- @todo The current regex may fail in cases with both kinds of quotes, like  local function fixReferences(text, page, full) if not full then full = getText(page) end local refNames = {} local refName local refBody local position = 1 while position < mw.ustring.len(text) do		refName, position = mw.ustring.match(text, '<%s*[Rr][Ee][Ff][^>]*name%s*=%s*["\']?([^"\'>]+)["\']?[^>]*/%s*>', position)		if refName then			refName = mw.text.trim(refName)			if not refNames[refName] then -- make sure we process each ref name only once				table.insert(refNames, refName)				refName = escapeString(refName)				refBody = mw.ustring.match(text, '<%s*[Rr][Ee][Ff][^>]*name%s*=%s*["\']?%s*' .. refName .. '%s*["\']?[^>/]*>.-<%s*/%s*[Rr][Ee][Ff]%s*>')				if not refBody then -- the ref body is not in the excerpt					refBody = mw.ustring.match(full, '<%s*[Rr][Ee][Ff][^>]*name%s*=%s*["\']?%s*' .. refName .. '%s*["\']?[^/>]*>.-<%s*/%s*[Rr][Ee][Ff]%s*>')					if refBody then -- the ref body was found elsewhere						text = mw.ustring.gsub(text, '<%s*[Rr][Ee][Ff][^>]*name%s*=%s*["\']?%s*' .. refName .. '%s*["\']?[^>]*/?%s*>', mw.ustring.gsub(refBody, '%%', '%%%%'), 1) end end end else position = mw.ustring.len(text) end end page = string.gsub(page, '"', '') -- remove any quotation marks from the page title	text = mw.ustring.gsub(text, '<%s*[Rr][Ee][Ff][^>]*name%s*=%s*["\']?([^"\'>/]+)["\']?[^>/]*(/?)%s*>', '') text = mw.ustring.gsub(text, '<%s*[Rr][Ee][Ff]%s*group%s*=%s*["\']?[^"\'>/]+["\']%s*>', ' ')	return text end

-- Replace the bold title or synonym near the start of the page by a link to the page local function linkBold(text, page) local lang = mw.language.getContentLanguage local position = mw.ustring.find(text, "" .. lang:ucfirst(page) .. "", 1, true) -- look for "Foo is..." (uc) or "A foo is..." (lc) or mw.ustring.find(text, "" .. lang:lcfirst(page) .. "", 1, true) -- plain search: special characters in page represent themselves if position then local length = mw.ustring.len(page) text = mw.ustring.sub(text, 1, position + 2) .. "" .. mw.ustring.sub(text, position + 3, position + length + 2) .. "" .. mw.ustring.sub(text, position + length + 3, -1) -- link it else -- look for anything unlinked in bold, assumed to be a synonym of the title (e.g. a person's birth name) text = mw.ustring.gsub(text, "(.-'*)", function(a, b)			if not mw.ustring.find(b, "%[") and not mw.ustring.find(b, "%{") then -- if not wikilinked or some weird template				return "" .. b .. "" -- replace Foo by Foo			else				return nil -- instruct gsub to make no change			end		end, 1) -- "end" here terminates the anonymous replacement function(a, b) passed to gsub end return text end

-- Remove non-free files. -- @param text Required. Wikitext to clean. -- @return Clean wikitext. local function removeNonFreeFiles(text) local fileNamespaces = getNamespaces('File') local fileName local fileDescription local frame = mw.getCurrentFrame for file in string.gmatch(text, '%b[]') do		if matchAnyLink(file, fileNamespaces) then fileName = 'File:' .. string.match(file, '%[%[[^:]-:([^]|]+)')			fileDescription, fileName = getText(fileName)			if fileName then				if not fileDescription or fileDescription == '' then					fileDescription = frame:preprocess('{{' .. fileName .. '}}') -- try Commons				end				if fileDescription and string.match(fileDescription, '[Nn]on%-free') then					text = removeString(text, file)				end			end		end	end	return text end

-- Remove any self links local function removeSelfLinks(text) local lang = mw.language.getContentLanguage local page = escapeString(mw.title.getCurrentTitle.prefixedText) text = text :gsub('%[%[(' .. lang:ucfirst(page) .. ')%]%]', '%1')		:gsub('%[%[(' .. lang:lcfirst(page) .. ')%]%]', '%1')		:gsub('%[%[' .. lang:ucfirst(page) .. '|([^]]+)%]%]', '%1') :gsub('%[%[' .. lang:lcfirst(page) .. '|([^]]+)%]%]', '%1') return text end

-- Remove all wikilinks local function removeLinks(text) text = text :gsub('%[%([^+)%]%]', '%1') :gsub('%[%[([^]]+)%]%]', '%1') return text end

-- Remove HTML comments local function removeComments(text) text = string.gsub(text, '<!%-%-.-%-%->', '') return text end

-- Remove behavior switches, such as local function removeBehaviorSwitches(text) text = string.gsub(text, '__[A-Z]+__', '') return text end

-- Remove bold text local function removeBold(text) text = string.gsub(text, "'", ) return text end

-- Main function for modules local function get(page, options) if not options then options = {} end

-- Make sure the page exists if not page then return throwError('no-page') end page = mw.text.trim(page) if page == '' then return throwError('no-page') end local page, hash, section = string.match(page, '([^#]+)(#?)(.*)') local text, page = getText(page, options.noFollow) if not page then return throwError('no-page') end if not text then return throwError('page-not-found', page) end local full = text -- save the full text for fixReferences below

-- Get the requested section if truthy(section) then text = getSection(text, section) elseif truthy(hash) then text = getLead(text) end

-- Keep only the requested elements local elements if options.only then if options.only == 'sections' then elements = getSections(text, options.sections) end if options.only == 'lists' then elements = getLists(text, options.lists) end if options.only == 'files' then elements = getFiles(text, options.files) end if options.only == 'tables' then elements = getTables(text, options.tables) end if options.only == 'templates' then elements = getTemplates(text, options.templates) end if options.only == 'parameters' then elements = getParameters(text, options.parameters) end if options.only == 'paragraphs' then elements = getParagraphs(text, options.paragraphs) end if options.only == 'categories' then elements = getCategories(text, options.categories) end if options.only == 'references' then elements = getReferences(text, options.references) end text = '' if elements then for key, element in pairs(elements) do text = text .. '\n' .. element .. '\n' end end end

-- Filter the requested elements if options.sections and options.only ~= 'sections' then elements, text = getSections(text, options.sections) end if options.lists and options.only ~= 'lists' then elements, text = getLists(text, options.lists) end if options.files and options.only ~= 'files' then elements, text = getFiles(text, options.files) end if options.tables and options.only ~= 'tables' then elements, text = getTables(text, options.tables) end if options.templates and options.only ~= 'templates' then elements, text = getTemplates(text, options.templates) end if options.parameters and options.only ~= 'parameters' then elements, text = getParameters(text, options.parameters) end if options.paragraphs and options.only ~= 'paragraphs' then elements, text = getParagraphs(text, options.paragraphs) end if options.categories and options.only ~= 'categories' then elements, text = getCategories(text, options.categories) end if options.references and options.only ~= 'references' then elements, text = getReferences(text, options.references) end

-- Misc options if truthy(options.fixReferences) then text = fixReferences(text, page, full) end if truthy(options.linkBold) and not truthy(section) then text = linkBold(text, page) end if truthy(options.noBold) then text = removeBold(text) end if truthy(options.noLinks) then text = removeLinks(text) end if truthy(options.noSelfLinks) then text = removeSelfLinks(text) end if truthy(options.noNonFreeFiles) then text = removeNonFreeFiles(text) end if truthy(options.noBehaviorSwitches) then text = removeBehaviorSwitches(text) end if truthy(options.noComments) then text = removeComments(text) end

-- Remove multiple newlines left over from removing elements text = string.gsub(text, '\n\n\n+', '\n\n') text = mw.text.trim(text)

return text end

-- Main invocation function for templates local function main(frame) local args = parseArgs(frame) local page = args[1] local ok, text = pcall(get, page, args) if not ok then return getError(text) end return frame:preprocess(text) end

-- Entry points for templates function p.main(frame) return main(frame) end

-- Entry points for modules function p.get(page, options) return get(page, options) end function p.getText(page, noFollow) return getText(page, noFollow) end function p.getLead(text) return getLead(text) end function p.getSection(text, section) return getSection(text, section) end function p.getSections(text, flags) return getSections(text, flags) end function p.getParagraphs(text, flags) return getParagraphs(text, flags) end function p.getParameters(text, flags) return getParameters(text, flags) end function p.getCategories(text, flags) return getCategories(text, flags) end function p.getReferences(text, flags) return getReferences(text, flags) end function p.getTemplates(text, flags) return getTemplates(text, flags) end function p.getTables(text, flags) return getTables(text, flags) end function p.getLists(text, flags) return getLists(text, flags) end function p.getFiles(text, flags) return getFiles(text, flags) end function p.getError(message, value) return getError(message, value) end

-- Expose handy methods function p.truthy(value) return truthy(value) end function p.parseArgs(frame) return parseArgs(frame) end function p.matchAny(text, pre, list, post, init) return matchAny(text, pre, list, post, init) end function p.matchFlag(value, flags) return matchFlag(value, flags) end function p.getNamespaces(name) return getNamespaces(name) end function p.removeBold(text) return removeBold(text) end function p.removeLinks(text) return removeLinks(text) end function p.removeSelfLinks(text) return removeSelfLinks(text) end function p.removeNonFreeFiles(text) return removeNonFreeFiles(text) end function p.removeBehaviorSwitches(text) return removeBehaviorSwitches(text) end function p.removeComments(text) return removeComments(text) end

return p