Module:Delink: Difference between revisions
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The Earwig (talk | contribs) m Protected "Module:Delink": Highly visible template: 55,000+ mainspace transclusions ([Edit=Allow only template editors and admins] (indefinite) [Move=Allow only template editors and admins] (indefinite)) |
sync from sandbox per WP:VPT discussion; |
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end |
end |
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local function delinkWikilink_tgt(s) -- return wikilink target |wikilinks=target |
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local result = s |
local result = s |
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-- Deal with the reverse pipe trick. |
-- Deal with the reverse pipe trick. |
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-- Check for bad titles. To do this we need to find the |
-- Check for bad titles. To do this we need to find the |
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-- title area of the link, i.e. the part before any pipes. |
-- title area of the link, i.e. the part before any pipes. |
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local |
local target_area |
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if result:match("|") then -- Find if we're dealing with a piped link. |
if result:match("|") then -- Find if we're dealing with a piped link. |
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target_area = result:match("^%[%[(.-)|.*%]%]") |
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else |
else |
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target_area = result:match("^%[%[(.-)%]%]") |
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end |
end |
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-- Check for bad characters. |
-- Check for bad characters. |
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if mw.ustring.match( |
if mw.ustring.match(target_area, "[%[%]<>{}%%%c\n]") then |
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return s |
return s |
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end |
end |
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return target_area |
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local result = s |
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-- Deal with the reverse pipe trick. |
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if result:match("%[%[|") then |
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return delinkReversePipeTrick(result) |
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end |
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result = mw.uri.decode(result, "PATH") -- decode percent-encoded entities. Leave underscores and plus signs. |
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result = mw.text.decode(result, true) -- decode HTML entities. |
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-- Check for bad titles. To do this we need to find the |
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-- title area of the link, i.e. the part before any pipes. |
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local target_area |
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if result:match("|") then -- Find if we're dealing with a piped link. |
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target_area = result:match("^%[%[(.-)|.*%]%]") |
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else |
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target_area = result:match("^%[%[(.-)%]%]") |
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end |
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-- Check for bad characters. |
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if mw.ustring.match(target_area, "[%[%]<>{}%%%c\n]") then |
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return s |
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end |
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-- Check for categories, interwikis, and files. |
-- Check for categories, interwikis, and files. |
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local colonprefix = result:match("%[%[(.-):.*%]%]") or "" -- Get the text before the first colon. |
local colonprefix = result:match("%[%[(.-):.*%]%]") or "" -- Get the text before the first colon. |
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text = text:gsub("<!%-%-.-%-%->", "") -- Remove html comments. |
text = text:gsub("<!%-%-.-%-%->", "") -- Remove html comments. |
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end |
end |
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if not (args.wikilinks == "no") and 'target' ~= args.wikilinks then |
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text = delinkLinkClass(text, "^%[%[.-%]%]", delinkWikilink) -- De-link wikilinks and return the label portion of the wikilink. |
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elseif 'target' == args.wikilinks then |
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text = delinkLinkClass(text, "^%[%[.-%]%]", delinkWikilink_tgt) -- De-link wikilinks and return the target portions of the wilikink |
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end |
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if not (args.urls == "no") then |
if not (args.urls == "no") then |
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text = delinkLinkClass(text, "^%[.-%]", delinkURL) -- De-link URLs. |
text = delinkLinkClass(text, "^%[.-%]", delinkURL) -- De-link URLs. |
Revision as of 19:10, 22 June 2021
![]() | 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.
require('Module:No globals')
local p = {}
local getArgs
local function delinkReversePipeTrick(s)
if s:match("^%[%[|.*[|\n]") then -- Check for newlines or multiple pipes.
return s
else
return s:match("%[%[|(.*)%]%]")
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 s:match(":") then
s = s:match("%[%[.-:(.*)|%]%]")
-- If there are no colons, grab all of the text apart from the square brackets and the pipe.
else
s = s:match("%[%[(.*)|%]%]")
end
-- Next up, brackets and commas.
if s:match("%(.-%)$") then -- Brackets trump commas.
s = s:match("(.-) ?%(.-%)$")
elseif s:match(",") then -- If there are no brackets, display only the text before the first comma.
s = s:match("(.-),.*$")
end
return s
end
local function delinkWikilink_tgt(s) -- return wikilink target |wikilinks=target
local result = s
-- Deal with the reverse pipe trick.
if result:match("%[%[|") then
return delinkReversePipeTrick(result)
end
result = mw.uri.decode(result, "PATH") -- decode percent-encoded entities. Leave underscores and plus signs.
result = mw.text.decode(result, 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 target_area
if result:match("|") then -- Find if we're dealing with a piped link.
target_area = result:match("^%[%[(.-)|.*%]%]")
else
target_area = result:match("^%[%[(.-)%]%]")
end
-- Check for bad characters.
if mw.ustring.match(target_area, "[%[%]<>{}%%%c\n]") then
return s
end
return target_area
end
local function delinkWikilink(s)
local result = s
-- Deal with the reverse pipe trick.
if result:match("%[%[|") then
return delinkReversePipeTrick(result)
end
result = mw.uri.decode(result, "PATH") -- decode percent-encoded entities. Leave underscores and plus signs.
result = mw.text.decode(result, 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 target_area
if result:match("|") then -- Find if we're dealing with a piped link.
target_area = result:match("^%[%[(.-)|.*%]%]")
else
target_area = result:match("^%[%[(.-)%]%]")
end
-- Check for bad characters.
if mw.ustring.match(target_area, "[%[%]<>{}%%%c\n]") then
return s
end
-- Check for categories, interwikis, and files.
local colonprefix = result: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.canonicalName == "File" or ns.canonicalName == "Category" ) ) then
return ""
end
-- Remove the colon if the link is using the [[Help:Colon trick]].
if result:match("%[%[:") then
result = "[[" .. result:match("%[%[:(.*%]%])")
end
-- Deal with links using the [[Help:Pipe trick]].
if mw.ustring.match(result, "^%[%[[^|]*|%]%]") then
return delinkPipeTrick(result)
end
-- Find the display area of the wikilink
if result:match("|") then -- Find if we're dealing with a piped link.
result = result:match("^%[%[.-|(.+)%]%]")
-- Remove new lines from the display of multiline piped links,
-- where the pipe is before the first new line.
result = result:gsub("\n", "")
else
result = result:match("^%[%[(.-)%]%]")
end
return result
end
local function 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:match("\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 mw.ustring.match(s, '^%[' .. v ..'[^"%s].*%]' ) then
url_prefix = v
break
end
end
-- Get display text
if not url_prefix then
return s
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 = mw.ustring.match(s, "^%s*(%S.*)$") or "" -- If the separating character was a space, trim it off.
local s_decoded = mw.text.decode(s, true)
if mw.ustring.match(s_decoded, "%c") then
return s
else
return s_decoded
end
end
local function delinkLinkClass(s, pattern, delinkFunction)
if not type(s) == "string" then
error("Attempt to de-link non-string input.", 2)
end
if not ( type(pattern) == "string" and mw.ustring.sub(pattern, 1, 1) == "^" ) then
error('Invalid pattern detected. Patterns must begin with "^".', 2)
end
-- Iterate over the text string, and replace any matched text. using the
-- delink function. We need to iterate character by character rather
-- than just use gsub, otherwise nested links aren't detected properly.
local result = ""
while s ~= '' do
-- Replace text using one iteration of gsub.
s = mw.ustring.gsub(s, pattern, delinkFunction, 1)
-- Append the left-most character to the result string.
result = result .. mw.ustring.sub(s, 1, 1)
s = mw.ustring.sub(s, 2, -1)
end
return result
end
function p._delink(args)
local text = args[1] or ""
if args.refs == "yes" 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 not (args.comments == "no") then
text = text:gsub("<!%-%-.-%-%->", "") -- Remove html comments.
end
if not (args.wikilinks == "no") and 'target' ~= args.wikilinks then
text = delinkLinkClass(text, "^%[%[.-%]%]", delinkWikilink) -- De-link wikilinks and return the label portion of the wikilink.
elseif 'target' == args.wikilinks then
text = delinkLinkClass(text, "^%[%[.-%]%]", delinkWikilink_tgt) -- De-link wikilinks and return the target portions of the wilikink
end
if not (args.urls == "no") then
text = delinkLinkClass(text, "^%[.-%]", delinkURL) -- De-link URLs.
end
if not (args.whitespace == "no") 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 = mw.ustring.gsub(text, "([^\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)
if not getArgs then
getArgs = require('Module:Arguments').getArgs
end
return p._delink(getArgs(frame, {wrappers = 'Template:Delink'}))
end
return p