-- This module de-links most wikitext.
local getArgs = require('Module:Arguments').getArgs
local yesno = require('Module:Yesno')
p = {}
local function whitespaceYesno(val)
-- Like yesno, but trims whitespace from vals and removes blank strings.
if type(val) == 'string' then
val = val:match('^%s*(.-)%s*$')
if val == '' then
return nil
end
end
return yesno(val)
end
function p._delinkReversePipeTrick(s)
if s:find('^%[%[|.*[|\n]') or s == '[[|]]' then -- Check for newlines or multiple pipes.
return s
else
return s:match('%[%[|(.*)%]%]')
end
end
function p._delinkPipeTrick(s)
-- s the tile area, without bracket nor pipe
-- We need to deal with colons, brackets, and commas, per [[Help:Pipe trick]].
-- First, remove the text before the first colon, if any.
s = s:gsub('^(.-:)', '')
-- Next up, brackets and commas.
if s:find('%(.-%)$') then -- Brackets trump commas.
s = s:match('(.-) ?%(.-%)$')
elseif s:find(',') then -- If there are no brackets, display only the text before the first comma.
s = s:match('(.-),.*$')
end
return s
end
function p._delinkWikilink(s)
-- s should be a string starting with '[[' and ending with ']]'. It should not contain other ']]'
-- Deal with nested links
local nested = '[[' .. s:sub(3):gsub('%[%[.-%]%]', p._delinkWikilink)
if nested ~= s then
return nested
end
-- Deal with the reverse pipe trick.
if s:find('^%[%[|') then
return p._delinkReversePipeTrick(s)
end
local decoded = mw.uri.decode(s, 'PATH') -- decode percent-encoded entities. Leave underscores and plus signs.
decoded = mw.text.decode(decoded, true) -- decode HTML entities.
-- Check for bad titles. To do this we need to find the
-- title area of the link, i.e. the part before any pipes.
local titlearea, display = decoded:match('^%[%[([^|%]]*)|?(.*)%]%]')
-- Check for bad characters.
if titlearea:find('[%[%]<>{}%%%c\n]') then
return s
end
-- Check for categories, interwikis, and files.
local colonprefix = titlearea:match('^(.-):') or '' -- Get the text before the first colon.
local ns = mw.site.namespaces[colonprefix] -- see if this is a known namespace
if mw.language.isKnownLanguageTag(colonprefix)
or (ns and (ns.id == 6 or ns.id == 14))
then
return ''
end
-- Remove the colon if the link is using the [[Help:Colon trick]].
if titlearea:sub(1, 1) == ':' then
titlearea = titlearea:sub(2)
end
-- Deal with links using the [[Help:Pipe trick]].
if display == '' then
return p._delinkPipeTrick(titlearea)
end
-- Find the display area of the wikilink
if not display then -- Find if we're dealing with a piped link.
-- Remove new lines from the display of multiline piped links,
-- where the pipe is before the first new line.
titlearea = titlearea:gsub('\n', '')
end
return display or titlearea
end
function p._delinkURL(s)
-- Assume we have already delinked internal wikilinks, and that
-- we have been passed some text between two square brackets [foo].
-- If the text contains a line break it is not formatted as a URL, regardless of other content.
if s:find('\n') then
return s
end
-- Check if the text has a valid URL prefix and at least one valid URL character.
local valid_url_prefixes = {'//', 'http://', 'https://', 'ftp://', 'gopher://', 'mailto:', 'news:', 'irc://'}
local url_prefix
for i,v in ipairs(valid_url_prefixes) do
if s:find('^%[' .. v ..'[^"%s].*%]' ) then
url_prefix = v
break
end
end
-- Get display text
if not url_prefix then
-- Deal with nested links or send back original string.
return '[' .. s:sub(2):gsub('%[.-%]', p._delinkURL)
end
s = s:match('^%[' .. url_prefix .. '(.*)%]') -- Grab all of the text after the URL prefix and before the final square bracket.
s = s:match('^.-(["<> [].*)') or '' -- Grab all of the text after the first URL separator character ("<> ).
s = s:match('^%s*(%S.*)$') or '' -- If the separating character was a space, trim it off.
local s_decoded = mw.text.decode(s, true)
if s_decoded:find('%c') then
return s
else
return s_decoded
end
end
function p._delink(args)
local text = args[1] or ''
if whitespaceYesno(args.refs) then
-- Remove any [[Help:Strip markers]] representing ref tags. In most situations
-- this is not a good idea - only use it if you know what you are doing!
text = mw.ustring.gsub(text, 'UNIQ%w*%-ref%-%d*%-QINU', '')
end
if whitespaceYesno(args.comments) ~= false then
text = text:gsub('<!%-%-.-%-%->', '') -- Remove html comments.
end
if whitespaceYesno(args.wikilinks) ~= false then
text = text:gsub('%[%[.-%]%]', p._delinkWikilink) -- De-link wikilinks.
end
if whitespaceYesno(args.urls) ~= false then
text = text:gsub('%[.-%]', p._delinkURL) -- De-link URLs.
end
if whitespaceYesno(args.whitespace) ~= false then
-- Replace single new lines with a single space, but leave double new lines
-- and new lines only containing spaces or tabs before a second new line.
text = text:gsub('([^\n \t][ \t]*)\n([ \t]*[^\n \t])', '%1 %2')
text = text:gsub('[ \t]+', ' ') -- Remove extra tabs and spaces.
end
return text
end
function p.delink(frame)
local args = frame:getParent().args
return p._delink(args)
end
return p
