Module:Excerpt: Difference between revisions

Revision as of 13:55, 3 May 2018

Revision as of 15:30, 3 May 2018

Line 1:

local p = {}

local mRedirect = require('Module:Redirect')

local errors

-- Entry point for Lua callers

-- Returns a string value: text of the lead of a page

function p._lead(pagenames, options)

errors = options.errors

if not pagenames or #pagenames < 1 then return "" end -- Return blank text rather than an error splurge

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

if not pagenames or #pagenames < 1 then return p.err(""No endpage --names Returngiven") blank text rather than an error splurgeend

local pagename = pagenames[1]

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

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

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

local redir = mRedirect.getTarget(title)

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

local text = title:getContent() or ""

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

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if options.more then text = text .. " '''[[" .. pagename .. "|" .. options.more .. "]]'''" end

return text

end

-- Return blank text, or an error message if requested

function p.err(text, options)

if errors then error(text, 2) end

return ""

end

Line 117 ⟶ 129:

options.more = args["more"] or pargs["more"]

if options.more and options.more == "" then options.more = "Read more..." end -- more= is short for this default text

options.errors = args["errors"] or pargs["errors"]

local text = p._lead(pagenames, options)