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Module:Find sources
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-- This module implements {{find sources}} and other similar templates, and -- also provides a mechanism to easily create new source-finding templates. -- Define constants local ROOT_PAGE = 'Module:Find sources' local TEMPLATE_ROOT = ROOT_PAGE .. '/templates/' -- for template config modules local LINK_ROOT = ROOT_PAGE .. '/links/' -- for link config modules local CONFIG_PAGE = ROOT_PAGE .. '/config' -- for global config -- Load required modules local checkType = require('libraryUtil').checkType local cfg = mw.loadData(CONFIG_PAGE) local p = {} local function maybeLoadData(page) local success, data = pcall(mw.loadData, page) return success and data end local function substituteParams(msg, ...) return mw.message.newRawMessage(msg, ...):plain() end local function renderSearchString(searchTerms, separator, transformFunc) -- This takes a table of search terms and turns it into a search string -- that can be used in a URL or in a display value. The transformFunc -- parameter can be used to transform each search term in some way (for -- example, URL-encoding them). local searchStrings = {} for i, s in ipairs(searchTerms) do searchStrings[i] = s end if transformFunc then for i, s in ipairs(searchStrings) do searchStrings[i] = transformFunc(s) end end return table.concat(searchStrings, separator) end function p._renderLink(code, searchTerms, display) -- Renders the external link wikicode for one link, given the link code, -- a table of search terms, and an optional display value. -- Get link config. local linkCfg = maybeLoadData(LINK_ROOT .. code) if not linkCfg then error(string.format( "invalid link code '%s'; no link config found at [[%s]]", code, LINK_ROOT .. code )) end -- Make URL. local url do local separator = linkCfg.separator or "+" local searchString = renderSearchString( searchTerms, separator, mw.uri.encode ) url = substituteParams(linkCfg.url, searchString) end return string.format('[%s %s]', url, display or linkCfg.display) end function p._main(template, args) -- The main access point from Lua. checkType('_main', 1, template, 'string') checkType('_main', 2, args, 'table', true) args = args or {} local title = mw.title.getCurrentTitle() -- Get the template config. local templateCfgPage = TEMPLATE_ROOT .. template local templateCfg = maybeLoadData(templateCfgPage) if not templateCfg then error(string.format( "invalid template name '%s'; no template config found at [[%s]]", template, templateCfgPage )) end -- Namespace check. if not templateCfg.isUsedInMainspace and title.namespace == 0 then local formatString = '<strong class="error">%s</strong>' if cfg['namespace-error-category'] then formatString = formatString .. '[[%s:%s]]' end return string.format( formatString, cfg['namespace-error'], mw.site.namespaces[14].name, cfg['namespace-error-category'] ) end -- Get the search terms from the arguments. local searchTerms = {} for i, s in ipairs(args) do searchTerms[i] = s end if not searchTerms[1] then -- Use the current subpage name as the default search term, unless -- another title is provided. If the page uses a disambiguator like -- "Foo (bar)", make "Foo" the first term and "bar" the second. local searchTitle = args.title or title.subpageText local term, dab = searchTitle:match('^(.*) (%b())$') if dab then dab = dab:sub(2, -2) -- Remove parens end if term and dab then searchTerms[1] = term searchTerms[2] = dab else searchTerms[1] = searchTitle end end searchTerms[1] = '"' .. searchTerms[1] .. '"' -- Make the intro link local introLink if templateCfg.introLink then local code = templateCfg.introLink.code local display = templateCfg.introLink.display or renderSearchString( searchTerms, ' ' ) introLink = p._renderLink(code, searchTerms, display) else introLink = '' end -- Make the other links local links = {} local separator = templateCfg.separator or cfg['default-separator'] local sep = '' for i, t in ipairs(templateCfg.links) do links[i] = sep .. p._renderLink(t.code, searchTerms, t.display) .. (t.afterDisplay or '') sep = t.separator or separator end links = table.concat(links) -- Make the blurb. local blurb = substituteParams(templateCfg.blurb, introLink, links) local span = mw.html.create('span') span :addClass('plainlinks') :addClass(templateCfg.class) :cssText(templateCfg.style) :wikitext(blurb) return tostring(span) end setmetatable(p, { __index = function(t, template) -- The main access point from #invoke. -- Invocations will look like {{#invoke:Find sources|template name}}, -- where "template name" is a subpage of [[Module:Find sources/templates]]. local tname = template if tname:sub(-8) == '/sandbox' then -- This makes {{Find sources/sandbox|Albert Einstein}} work. tname = tname:sub(1, -9) end return function(frame) local args = require('Module:Arguments').getArgs(frame, { wrappers = mw.site.namespaces[10].name .. ':' .. tname }) return t._main(template, args) end end}) return p
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