Module:Excerpt: Difference between revisions

Revision as of 15:30, 3 May 2018

Revision as of 16:26, 3 May 2018

Line 7:

function p._lead(pagenames, options)

errors = options.errors

--if 1 then return "options.errors=("..options.errors..") errors=("..errors..")" end

if not pagenames or #pagenames < 1 then return p.err("No page names given") end

local pagename = pagenames[1]

if #pagenames > 1 then -- we could do this even with one page, but it would be inefficient

math.randomseed(os.time())

pagename = pagenames[math.random(#pagenames)] --pick a random title

end

pagename = mw.ustring.match(pagename, "%[%[%s*(.-)[]|#]") or pagename -- "[[Foo|Bar]]" → "Foo"

pagename = mw.ustring.match(pagename, "%S.*%S") -- strip leading and trailing white space

if not pagename then return p.err("Nil page name") end

if pagename == "" then return p.err("Blank page name") end

local pagename

local title = mw.title.new(pagename) -- Find the lead section of the named page

local text

if not title then return p.err("No title for page name " .. pagename) end

local redirpagecount = mRedirect.getTarget(title)#pagenames

local firstpage = pagenames[1] or "(nil)" -- save for error message, as it the name will be deleted

if redir then title = mw.title.new(redir) end

-- read the page, or a random one if multiple pages were provided

if pagecount > 1 then math.randomseed(os.time()) end

while not text and pagecount > 0 do

local pagenum = 1

pagenameif pagecount > 1 then pagenum = pagenames[math.random(#pagenamespagecount)] end -- pick a random title

local pagename = pagenames[1pagenum]

if pagename and pagename ~= "" then

pagename = mw.ustring.match(pagename, "%[%[%s*(.-)[]|#]") or pagename -- "[[Foo|Bar]]" → "Foo"

pagename = mw.ustring.match(pagename, "%S.*%S") -- strip leading and trailing white space

if pagename and pagename ~= "" then

local title = mw.title.new(pagename) -- Find the lead section of the named page

if not pagenametitle then return p.err("NilNo title for page name " .. pagename) end

local redir = mRedirect.getTarget(title)

if redir then title = mw.title.new(redir) end

local text = title:getContent()

end

end

if not text then table.remove(pagenames, pagenum) end -- this one didn't work; try another

pagecount = pagecount - 1 -- ensure that we exit the loop eventually

end

if pagenamenot == ""text then return p.err("BlankCannot read a valid page: first name is " .. firstpage) end

local text = title:getContent()

if not text then return p.err("No page for name " .. pagename) end

text = mw.ustring.gsub(text, "%c%s*==.*","") -- remove first heading and everything after it

text = mw.ustring.gsub(text, "<noinclude>.-</noinclude>", "") -- remove noinclude bits