Module:Disambiguation
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This Lua module is used in system messages, and on approximately 225,000 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 depends on the following other modules: |
This module detects if a given page is a disambiguation page.
Usage
{{#invoke:Disambiguation|isDisambiguationPage|Page title}}
- returns
yes
if the page is a disambiguation page, or nothing if the page is not a disambiguation page
Examples:
{{#invoke:Disambiguation|isDisambiguationPage|Paris}}
→{{#invoke:Disambiguation|isDisambiguationPage|New}}
→ yes{{#invoke:Disambiguation|isDisambiguationPage|Black swan (disambiguation)}}
→ yes
You can also use magic words like {{SUBJECTPAGENAME}}:
{{#invoke:Disambiguation|isDisambiguationPage|{{SUBJECTPAGENAME}}}}
→ yes
Usage within Lua modules
Import this module, e.g with
local mDisambiguation = require('Module:Disambiguation')
Then you can use the functions isDisambiguation
and _isDisambiguationPage
.
If you have already have a Title object for the page to check, get the content using the title object's getContent() method, and pass that into isDisambiguation
:
local isDab = mDisambiguation.isDisambiguation(content) -- returns true or false
- (where
content
is a string, the wikitext content of page to check)
If you don't otherwise need the title, you can pass in the page name to _isDisambiguationPage
:
local isDab = mDisambiguation._isDisambiguationPage(pageName) -- returns true or false
- (where
pageName
is a string, the name of page to check)
Internal operations
- Although set index articles are treated by some templates as disambiguation pages, they are actually considered a special type of list and are not treated as disambiguation pages by this module
- As this module relies on detecting templates with names like "disambiguation" in the article text, it is subject to false positives by templates such as {{italic disambiguation}}. These templates should be added to the falsePositives list in the code to exclude them.
- The list of disambiguation templates is maintained at Module:Disambiguation/templates.
local p = {}
local mRedirect = require('Module:Redirect')
local disambiguationTemplates = mw.loadData('Module:Disambiguation/templates')
local function capitalize(s)
-- This function only works on ASCII strings. If your wiki has
-- disambiguation templates that use Unicode strings, use the commented-out
-- line instead. Enwiki uses ASCII string manipulation only here to improve
-- performance.
return s:sub(1, 1):upper() .. s:sub(2, -1)
-- return mw.ustring.upper(mw.ustring.sub(1, 1)) .. mw.ustring.sub(2, -1)
end
local function isDisambiguationTemplate(template)
return disambiguationTemplates[capitalize(template)] or false
end
p.isDisambiguation = function(content)
-- false if there is no content
if content == nil then
return false
end
-- redirects are not disambiguation pages
if mRedirect.getTargetFromText(content) ~= nil then
return false
end
-- check for disambiguation templates in the content
local templateNames = {}
for template in string.gmatch(content, "{{%s*([^|}]-)%s*[|}]") do
if isDisambiguationTemplate(template) then
return true
end
end
-- check for magic word
if string.find(content, "__DISAMBIG__", 1, true) ~= nil then
return true
end
return false
end
p._isDisambiguationPage = function(page)
-- Look "(disambiguation)" in the title
if string.find(page, "(disambiguation)",0,true) ~= nil then
return true;
end
-- Look for disamiguation template in page content
local title = mw.title.new(page)
if not title then return false end
local content = title:getContent()
return p.isDisambiguation(content)
end
-- Entry points for templates
p.isDisambiguationPage = function(frame)
local title = frame.args[1]
return p._isDisambiguationPage(title) and "yes" or ""
end
return p