Module:URL
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This module implements {{URL}} and {{URL2}}. Please see the template page for documentation.
Lua interface
The p._url(url, text, msg)
function may be used by other Lua modules. It returns a formatted Wikitext for the given URL, made suitable for line wrapping using Template:Tag. It takes the following parameters:
- url
- REQUIRED. The URL to format.
- text
- OPTIONAL. Display text to put in the Wikitext link. Defaults to a pretty version of the URL.
- msg
- OPTIONAL. String. If content is false, n or N, do not emit a help message (using Template:Tlx) when URL is not given.
Example
The following module emits a prettified link to log the user out. It will wrap correctly to most widths. <syntaxhighlight lang=lua> local url = require('Module:URL')._url local p = {}
p.main = function(frame)
return url("https://en.wikipedia.org/wiki/Special:UserLogout")
end
return p </syntaxhighlight>
See also
- WikidataIB#url2 – a simpler version which only allows one value
-- -- This module implements {{URL}} -- -- See unit tests at [[Module:URL/testcases]] local p = {} local function safeUri(s) local success, uri = pcall(function() return mw.uri.new(s) end) if success then return uri end end local function extractUrl(args) for name, val in pairs(args) do if name ~= 2 and name ~= "msg" then local url = name .. "=" .. val; url = mw.ustring.gsub(url, '^[Hh][Tt][Tt][Pp]([Ss]?):(/?)([^/])', 'http%1://%3') local uri = safeUri(url); if uri and uri.host then return url end end end end function p._url(url, text, msg) url = mw.text.trim(url or '') text = mw.text.trim(text or '') local nomsg = (msg or ''):sub(1,1):lower() == "n" or msg == 'false' -- boolean: true if msg is "false" or starts with n or N if url == '' then if text == '' then if nomsg then return nil else return mw.getCurrentFrame():expandTemplate{ title = 'tlx', args = { 'URL', "''example.com''", "''optional display text''" } } end else return text end end -- If the URL contains any unencoded spaces, encode them, because MediaWiki will otherwise interpret a space as the end of the URL. url = mw.ustring.gsub(url, '%s', function(s) return mw.uri.encode(s, 'PATH') end) -- If there is an empty query string or fragment id, remove it as it will cause mw.uri.new to throw an error url = mw.ustring.gsub(url, '#$', '') url = mw.ustring.gsub(url, '%?$', '') -- If it's an HTTP[S] URL without the double slash, fix it. url = mw.ustring.gsub(url, '^[Hh][Tt][Tt][Pp]([Ss]?):(/?)([^/])', 'http%1://%3') -- Handle URLs from Wikidata of the format http:// url = mw.ustring.gsub(url, '^[Hh][Tt][Tt][Pp]([Ss]?)://', 'http%1://') local uri = safeUri(url) -- Handle URL's without a protocol and URL's that are protocol-relative, -- e.g. www.example.com/foo or www.example.com:8080/foo, and //www.example.com/foo if uri and (not uri.protocol or (uri.protocol and not uri.host)) and url:sub(1, 2) ~= '//' then url = 'http://' .. url uri = safeUri(url) end if text == '' then if uri then if uri.path == '/' then uri.path = '' end local port = '' if uri.port then port = ':' .. uri.port end text = mw.ustring.lower(uri.host or '') .. port .. (uri.relativePath or '') -- Add <wbr> before _/.-# sequences text = mw.ustring.gsub(text,"(/+)","<wbr/>%1") -- This entry MUST be the first. "<wbr/>" has a "/" in it, you know. text = mw.ustring.gsub(text,"(%.+)","<wbr/>%1") -- text = mw.ustring.gsub(text,"(%-+)","<wbr/>%1") -- DISABLED for now text = mw.ustring.gsub(text,"(%#+)","<wbr/>%1") text = mw.ustring.gsub(text,"(_+)","<wbr/>%1") else -- URL is badly-formed, so just display whatever was passed in text = url end end return mw.ustring.format('<span class="url">[%s %s]</span>', url, text) end --[[ The main entry point for calling from Template:URL. --]] function p.url(frame) local templateArgs = frame.args local parentArgs = frame:getParent().args local url = templateArgs[1] or parentArgs[1] local text = templateArgs[2] or parentArgs[2] or '' local msg = templateArgs.msg or parentArgs.msg or '' url = url or extractUrl(templateArgs) or extractUrl(parentArgs) or '' return p._url(url, text, msg) end --[[ The entry point for calling from the forked Template:URL2. This function returns no message by default. It strips out wiki-link markup, html tags, and everything after a space. --]] function p.url2(frame) local templateArgs = frame.args local parentArgs = frame:getParent().args local url = templateArgs[1] or parentArgs[1] local text = templateArgs[2] or parentArgs[2] or '' -- default to no message local msg = templateArgs.msg or parentArgs.msg or 'no' url = url or extractUrl(templateArgs) or extractUrl(parentArgs) or '' -- if the url came from a Wikidata call, it might have a pen icon appended -- we want to keep that and add it back at the end. local u1, penicon = mw.ustring.match( url, "(.*)( <span class='penicon.*)" ) if penicon then url = u1 end -- strip out html tags and [ ] from url url = (url or ''):gsub("<[^>]*>", ""):gsub("[%[%]]", "") -- truncate anything after a space url = url:gsub("%%20", " "):gsub(" .*", "") return (p._url(url, text, msg) or "") .. (penicon or "") end return p