Module:String: Difference between revisions

-- findpagetext returns the position of a piece of text in a page

-- First positional parameter or |text is the search text

-- Optional parameter |title is the page title, defaults to current page

-- Optional parameter |plain is either true for plain search (default) or false for Lua pattern search

-- Optional parameter |nomatch is the return value when no match is found; default is nil

function str._findpagetext(args)

-- process parameters

local nomatch = args.nomatch or ""

if nomatch == "" then nomatch = nil end

--

local text = mw.text.trim(args[1] or args.text or "")

if text == "" then return nil end

--

local title = args.title or ""

local titleobj

if title == "" then

titleobj = mw.title.getCurrentTitle()

else

titleobj = mw.title.new(title)

end

--

local plain = args.plain or ""

if plain:sub(1, 1) == "f" then plain = false else plain = true end

-- get the page content and look for 'text' - return position or nomatch

local content = titleobj and titleobj:getContent()

return content and mw.ustring.find(content, text, 1, plain) or nomatch

end

function str.findpagetext(frame)

local args = frame.args

local pargs = frame:getParent().args

for k, v in pairs(pargs) do

args[k] = v

end

if not (args[1] or args.text) then return nil end

-- just the first value

return (str._findpagetext(args))

end