Module:Delink: Difference between revisions
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return false for bad links rather than returning the entire string |
try capturing the whole of the pattern, in case it isn't doing this already |
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Line 115: | Line 115: | ||
local function _delink(args) |
local function _delink(args) |
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local text = args[1] or "" |
local text = args[1] or "" |
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text = mw.ustring.gsub(text, "%[%[.-%]%]", delinkWikilink) |
text = mw.ustring.gsub(text, "(%[%[.-%]%])", delinkWikilink) |
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text = mw.ustring.gsub(text, "%[.-%]", delinkURL) |
text = mw.ustring.gsub(text, "(%[.-%])", delinkURL) |
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return text |
return text |
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end |
end |
Revision as of 21:24, 3 April 2013
![]() | This module is subject to page protection. It is a highly visible module in use by a very large number of pages, or is substituted very frequently. Because vandalism or mistakes would affect many pages, and even trivial editing might cause substantial load on the servers, it is protected from editing. |
![]() | This Lua module is used in system messages, and on approximately 3,250,000 pages, or roughly 5% of all pages. Changes to it can cause immediate changes to the Wikipedia user interface. To avoid major disruption and server load, any changes should be tested in the module's /sandbox or /testcases subpages, or in your own module sandbox. The tested changes can be added to this page in a single edit. Please discuss changes on the talk page before implementing them. |
This module implements the {{delink}} template. Please see the template page for documentation.
-- This module de-links most wikitext.
p = {}
local function delinkURL(s)
-- Assume we have already delinked internal wikilinks, and that
-- we have been passed some text between two square brackets [foo].
-- 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 mw.ustring.match(s, '^%[' .. v ..'[^" ].*%]' ) then
url_prefix = v
break
end
end
-- Get display text
if not url_prefix then
return false
else
s = mw.ustring.match(s, "^%[" .. url_prefix .. "(.*)%]") -- Grab all of the text after the URL prefix and before the final square bracket.
s = mw.ustring.match(s, '^.-(["<> ].*)') or "" -- Grab all of the text after the first URL separator character ("<> ).
s = mw.ustring.match(s, "^ ?(.*)") -- If the separating character was a space, trim it off.
return s
end
end
local function delinkReversePipeTrick(s)
if mw.ustring.match(s, "^%[%[|.*|") then -- Check for multiple pipes.
return false
else
return mw.ustring.match(s, "%[%[|(.*)%]%]")
end
end
local function delinkPipeTrick(s)
local linkarea, display = "", ""
-- We need to deal with colons, brackets, and commas, per [[Help:Pipe trick]].
-- First, remove the text before the first colon, if any.
if mw.ustring.match(s, ":") then
s = mw.ustring.match(s, "%[%[.-:(.*)|%]%]")
-- If there are no colons, grab all of the text apart from the square brackets and the pipe.
else
s = mw.ustring.match(s, "%[%[(.*)|%]%]")
end
-- Next up, brackets and commas.
if mw.ustring.match(s, "%(.-%)$") then -- Brackets trump commas.
s = mw.ustring.match(s, "(.-) ?%(.-%)$")
elseif mw.ustring.match(s, ",") then -- If there are no brackets, display only the text before the first comma.
s = mw.ustring.match(s, "(.-),.*$")
end
return s
end
local function delinkWikilink(s)
-- Deal with the reverse pipe trick.
if mw.ustring.match(s, "%[%[|") then
return delinkReversePipeTrick(s)
end
-- Check for bad titles. To do this we need to find the
-- title area of the link, i.e. the part before any pipes.
local titlearea
if mw.ustring.match(s, "|") then -- Find if we're dealing with a piped link.
titlearea= mw.ustring.match(s, "^%[%[(.-)|.*%]%]")
else
titlearea = mw.ustring.match(s, "^%[%[(.-)%]%]")
end
-- Clear the title of the fragment (the section link).
if not mw.title.makeTitle("", titlearea) then
return false -- If it's not a valid link, return false.
end
-- Check for strings that are valid for titles but invalid for wikilinks.
local other_invalid_link_strings = { '�' }
for i,v in ipairs(other_invalid_link_strings) do
if mw.ustring.match(titlearea, v) then
return false
end
end
-- Check for categories, interwikis, and files.
local colonprefix = mw.ustring.match(s, "%[%[(.-):.*%]%]") or "" -- Get the text before the first colon.
if mw.language.isKnownLanguageTag(colonprefix)
or mw.ustring.match(colonprefix, "^[Cc]ategory$")
or mw.ustring.match(colonprefix, "^[Ff]ile$")
or mw.ustring.match(colonprefix, "^[Ii]mage$") then
return ""
end
-- Remove the colon if the link is using the [[Help:Colon trick]].
if mw.ustring.match(s, "%[%[:") then
s = "[[" .. mw.ustring.match(s, "%[%[:(.*%]%])")
end
-- Deal with links using the [[Help:Pipe trick]].
if mw.ustring.match(s, "^%[%[[^|]*|%]%]") then
return delinkPipeTrick(s)
end
-- Find the display area of the wikilink
local display
if mw.ustring.match(s, "|") then -- Find if we're dealing with a piped link.
display = mw.ustring.match(s, "^%[%[.-|(.+)%]%]")
else
display = mw.ustring.match(s, "^%[%[(.-)%]%]")
end
return display
end
local function _delink(args)
local text = args[1] or ""
text = mw.ustring.gsub(text, "(%[%[.-%]%])", delinkWikilink)
text = mw.ustring.gsub(text, "(%[.-%])", delinkURL)
return text
end
function p.delink(frame)
local args
if frame == mw.getCurrentFrame() then
-- We're being called via #invoke. If the invoking template passed any args, use
-- them. Otherwise, use the args that were passed into the template.
args = frame:getParent().args
for k, v in pairs(frame.args) do
args = frame.args
break
end
else
-- We're being called from another module or from the debug console, so assume
-- the args are passed in directly.
args = frame
end
return _delink(args)
end
return p