Module:Category handler: Difference between revisions
From All Skies Encyclopaedia
imported>Mr. Stradivarius (test the sandbox version of Module:Namespace detect) |
imported>MusikAnimal m (1 revision imported) |
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-------------------------------------------------------------------------------- |
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-- |
-- -- |
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-- |
-- CATEGORY HANDLER -- |
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-- |
-- -- |
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-- This module implements the {{category handler}} template in Lua, |
-- This module implements the {{category handler}} template in Lua, -- |
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-- |
-- with a few improvements: all namespaces and all namespace aliases -- |
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-- are supported, and namespace names are detected automatically for -- |
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-- automatically for the local wiki. This module requires [[Module:Namespace detect]] and -- |
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-- |
-- the local wiki. This module requires [[Module:Namespace detect]] -- |
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-- |
-- and [[Module:Yesno]] to be available on the local wiki. It can be -- |
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-- |
-- configured for different wikis by altering the values in -- |
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-- [[Module:Category handler/config]], and pages can be blacklisted -- |
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---------------------------------------------------------------------------------------------------------- |
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-- from categorisation by using [[Module:Category handler/blacklist]]. -- |
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-- -- |
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-------------------------------------------------------------------------------- |
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-- Load required modules |
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---------------------------------------------------------------------------------------------------------- |
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local yesno = require('Module:Yesno') |
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-- Configuration data -- |
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-- Language-specific parameter names and values can be set here. -- |
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---------------------------------------------------------------------------------------------------------- |
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-- Lazily load things we don't always need |
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local cfg = {} |
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local mShared, mappings |
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local p = {} |
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-- The following config values set the names of parameters that suppress categorisation. They are used |
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-- with Module:Yesno, and work as follows: |
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-- |
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-- cfg.nocat: |
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-- Result of yesno(args[cfg.nocat]) Effect |
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-- true Categorisation is suppressed |
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-- false Categorisation is allowed, and the blacklist check is skipped |
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-- nil Categorisation is allowed |
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-- |
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-- cfg.categories: |
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-- Result of yesno(args[cfg.categories]) Effect |
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-- true Categorisation is allowed, and the blacklist check is skipped |
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-- false Categorisation is suppressed |
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-- nil Categorisation is allowed |
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cfg.nocat = 'nocat' |
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cfg.categories = 'categories' |
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-------------------------------------------------------------------------------- |
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-- The parameter name for the legacy "category2" parameter. This skips the blacklist if set to the |
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-- Helper functions |
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-- cfg.category2Yes value, and suppresses categorisation if present but equal to anything other than |
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-------------------------------------------------------------------------------- |
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-- cfg.category2Yes or cfg.category2Negative. |
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cfg.category2 = 'category2' |
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cfg.category2Yes = 'yes' |
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cfg.category2Negative = '¬' |
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local function trimWhitespace(s, removeBlanks) |
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-- cfg.subpage is the parameter name to specify how to behave on subpages. cfg.subpageNo is the value to |
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if type(s) ~= 'string' then |
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-- specify to not categorise on subpages; cfg.only is the value to specify to only categorise on subpages. |
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return s |
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cfg.subpage = 'subpage' |
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end |
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cfg.subpageNo = 'no' |
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s = s:match('^%s*(.-)%s*$') |
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cfg.subpageOnly = 'only' |
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if removeBlanks then |
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if s ~= '' then |
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return s |
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else |
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return nil |
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end |
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else |
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return s |
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end |
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end |
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-------------------------------------------------------------------------------- |
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-- The parameter for data to return in all namespaces. |
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-- CategoryHandler class |
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cfg.all = 'all' |
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-------------------------------------------------------------------------------- |
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local CategoryHandler = {} |
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-- The parameter name for data to return if no data is specified for the namespace that is detected. This |
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CategoryHandler.__index = CategoryHandler |
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-- must be the same as the cfg.other parameter in [[Module:Namespace detect]]. |
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cfg.other = 'other' |
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function CategoryHandler.new(data, args) |
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-- The parameter name used to specify a page other than the current page; used for testing and |
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local obj = setmetatable({ _data = data, _args = args }, CategoryHandler) |
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-- demonstration. This must be the same as the cfg.page parameter in [[Module:Namespace detect]]. |
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cfg.page = 'page' |
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-- Set the title object |
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do |
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local pagename = obj:parameter('demopage') |
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local success, titleObj |
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if pagename then |
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success, titleObj = pcall(mw.title.new, pagename) |
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end |
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if success and titleObj then |
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obj.title = titleObj |
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if titleObj == mw.title.getCurrentTitle() then |
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obj._usesCurrentTitle = true |
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end |
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else |
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obj.title = mw.title.getCurrentTitle() |
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obj._usesCurrentTitle = true |
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end |
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end |
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-- Set suppression parameter values |
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-- The categorisation blacklist. Pages that match Lua patterns in this list will not be categorised. |
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for _, key in ipairs{'nocat', 'categories'} do |
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local value = obj:parameter(key) |
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-- If the namespace name has a space in, it must be written with an underscore, e.g. "Wikipedia_talk". |
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value = trimWhitespace(value, true) |
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-- Other parts of the title can have either underscores or spaces. |
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obj['_' .. key] = yesno(value) |
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cfg.blacklist = { |
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end |
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'^Main Page$', -- don't categorise the main page. |
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do |
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local subpage = obj:parameter('subpage') |
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-- Don't categorise the following pages or their subpages. |
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local category2 = obj:parameter('category2') |
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'^Wikipedia:Cascade%-protected items$', |
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if type(subpage) == 'string' then |
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'^Wikipedia:Cascade%-protected items/.*$', |
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subpage = mw.ustring.lower(subpage) |
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'^User:UBX$', -- The userbox "template" space. |
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end |
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'^User:UBX/.*$', |
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if type(category2) == 'string' then |
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'^User_talk:UBX$', |
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subpage = mw.ustring.lower(category2) |
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'^User_talk:UBX/.*$', |
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end |
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obj._subpage = trimWhitespace(subpage, true) |
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-- Don't categorise subpages of these pages, but allow |
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obj._category2 = trimWhitespace(category2) -- don't remove blank values |
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-- categorisation of the base page. |
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end |
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'^Wikipedia:Template messages/.+$', |
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return obj |
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end |
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'/[aA]rchive' -- Don't categorise archives. |
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} |
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function CategoryHandler:parameter(key) |
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-- This is a table of namespaces to categorise by default. They should be in the format of parameter |
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local parameterNames = self._data.parameters[key] |
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-- names accepted by [[Module:Namespace detect]]. |
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local pntype = type(parameterNames) |
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cfg.defaultNamespaces = { |
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if pntype == 'string' or pntype == 'number' then |
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'main', |
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return self._args[parameterNames] |
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'file', |
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elseif pntype == 'table' then |
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'help', |
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for _, name in ipairs(parameterNames) do |
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'category' |
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local value = self._args[name] |
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} |
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if value ~= nil then |
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return value |
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end |
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end |
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return nil |
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else |
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error(string.format( |
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'invalid config key "%s"', |
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tostring(key) |
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), 2) |
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end |
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end |
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function CategoryHandler:isSuppressedByArguments() |
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---------------------------------------------------------------------------------------------------------- |
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return |
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-- End configuration data -- |
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-- See if a category suppression argument has been set. |
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---------------------------------------------------------------------------------------------------------- |
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self._nocat == true |
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or self._categories == false |
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or ( |
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self._category2 |
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and self._category2 ~= self._data.category2Yes |
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and self._category2 ~= self._data.category2Negative |
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) |
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-- Check whether we are on a subpage, and see if categories are |
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-- Get dependent modules |
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-- suppressed based on our subpage status. |
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local nsDetect = require('Module:Namespace detect/sandbox') -- REMOVE "/sandbox" BEFORE GOING LIVE |
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or self._subpage == self._data.subpageNo and self.title.isSubpage |
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local yesno = require('Module:Yesno') |
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or self._subpage == self._data.subpageOnly and not self.title.isSubpage |
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end |
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function CategoryHandler:shouldSkipBlacklistCheck() |
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---------------------------------------------------------------------------------------------------------- |
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-- Check whether the category suppression arguments indicate we |
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-- Local functions -- |
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-- should skip the blacklist check. |
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-- The following are internal functions, which we do not want to be accessible from other modules. -- |
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return self._nocat == false |
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---------------------------------------------------------------------------------------------------------- |
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or self._categories == true |
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or self._category2 == self._data.category2Yes |
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end |
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function CategoryHandler:matchesBlacklist() |
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-- Find whether we need to return a category or not. |
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if self._usesCurrentTitle then |
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local function needsCategory(pageObject, args) |
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return self._data.currentTitleMatchesBlacklist |
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-- Don't categorise if the relevant options are set. |
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else |
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if yesno(args[cfg.nocat]) |
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mShared = mShared or require('Module:Category handler/shared') |
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or yesno(args[cfg.categories]) == false |
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return mShared.matchesBlacklist( |
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or ( |
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self.title.prefixedText, |
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args[cfg.category2] |
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mw.loadData('Module:Category handler/blacklist') |
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and args[cfg.category2] ~= cfg.category2Yes |
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) |
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and args[cfg.category2] ~= cfg.category2Negative |
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end |
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) |
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then |
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return false |
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end |
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-- If there is no pageObject available, then that either means that we are over |
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-- the expensive function limit or that the title specified was invalid. Invalid |
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-- titles will probably only be a problem during testing, so we choose the best |
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-- fallback for being over the expensive function limit. The fallback behaviour |
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-- of the old template was to assume the page was not a subpage, so we will do |
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-- the same here. |
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if args[cfg.subpage] == cfg.subpageNo and pageObject and pageObject.isSubpage then |
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return false |
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end |
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if args[cfg.subpage] == cfg.subpageOnly |
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and (not pageObject or (pageObject and not pageObject.isSubpage)) |
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then |
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return false |
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end |
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return true |
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end |
end |
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function CategoryHandler:isSuppressed() |
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-- Find whether we need to check the blacklist or not. |
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-- Find if categories are suppressed by either the arguments or by |
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local function needsBlacklistCheck(args) |
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-- matching the blacklist. |
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if yesno(args[cfg.nocat]) == false |
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return self:isSuppressedByArguments() |
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or yesno(args[cfg.categories]) == true |
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or not self:shouldSkipBlacklistCheck() and self:matchesBlacklist() |
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or args[cfg.category2] == cfg.category2Yes |
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then |
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return false |
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else |
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return true |
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end |
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end |
end |
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function CategoryHandler:getNamespaceParameters() |
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-- Find whether any namespace parameters have been specified. |
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if self._usesCurrentTitle then |
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-- Mappings is the table of parameter mappings taken from |
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return self._data.currentTitleNamespaceParameters |
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-- [[Module:Namespace detect]]. |
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else |
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local function nsParamsExist(mappings, args) |
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if not mappings then |
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mShared = mShared or require('Module:Category handler/shared') |
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return true |
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mappings = mShared.getParamMappings(true) -- gets mappings with mw.loadData |
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end |
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end |
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for ns, params in pairs(mappings) do |
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return mShared.getNamespaceParameters( |
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for i, param in ipairs(params) do |
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self.title, |
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if args[param] then |
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mappings |
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return true |
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) |
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end |
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end |
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end |
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return false |
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end |
end |
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function CategoryHandler:namespaceParametersExist() |
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---------------------------------------------------------------------------------------------------------- |
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-- Find whether any namespace parameters have been specified. |
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-- Global functions -- |
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-- We use the order "all" --> namespace params --> "other" as this is what |
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-- The following functions are global, because we want them to be accessible from #invoke and -- |
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-- the old template did. |
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-- from other Lua modules. -- |
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if self:parameter('all') then |
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---------------------------------------------------------------------------------------------------------- |
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return true |
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end |
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if not mappings then |
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mShared = mShared or require('Module:Category handler/shared') |
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mappings = mShared.getParamMappings(true) -- gets mappings with mw.loadData |
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end |
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for ns, params in pairs(mappings) do |
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for i, param in ipairs(params) do |
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if self._args[param] then |
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return true |
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end |
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end |
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end |
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if self:parameter('other') then |
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return true |
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end |
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return false |
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end |
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function CategoryHandler:getCategories() |
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local params = self:getNamespaceParameters() |
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local nsCategory |
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for i, param in ipairs(params) do |
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local value = self._args[param] |
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if value ~= nil then |
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nsCategory = value |
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break |
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end |
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end |
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if nsCategory ~= nil or self:namespaceParametersExist() then |
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-- Namespace parameters exist - advanced usage. |
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if nsCategory == nil then |
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nsCategory = self:parameter('other') |
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end |
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local ret = {self:parameter('all')} |
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local numParam = tonumber(nsCategory) |
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if numParam and numParam >= 1 and math.floor(numParam) == numParam then |
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-- nsCategory is an integer |
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ret[#ret + 1] = self._args[numParam] |
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else |
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ret[#ret + 1] = nsCategory |
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end |
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if #ret < 1 then |
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return nil |
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else |
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return table.concat(ret) |
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end |
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elseif self._data.defaultNamespaces[self.title.namespace] then |
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-- Namespace parameters don't exist, simple usage. |
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return self._args[1] |
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end |
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return nil |
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end |
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-------------------------------------------------------------------------------- |
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-- Exports |
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-------------------------------------------------------------------------------- |
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local p = {} |
local p = {} |
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function p._exportClasses() |
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-- Find if a string matches the blacklist. Returns the match if one is found, or nil otherwise. |
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-- Used for testing purposes. |
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-- Input should be a page title with a namespace prefix, e.g. "Wikipedia talk:Articles for deletion". |
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return { |
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function p.matchesBlacklist(page) |
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CategoryHandler = CategoryHandler |
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if type(page) ~= 'string' then return end |
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} |
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for i, pattern in ipairs(cfg.blacklist) do |
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local match = mw.ustring.match(page, pattern) |
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if match then |
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return match |
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end |
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end |
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end |
end |
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function p._main(args, data) |
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-- The main structure of the module. Checks whether we need to categorise, |
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data = data or mw.loadData('Module:Category handler/data') |
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-- and then passes the relevant arguments to [[Module:Namespace detect]]. |
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local handler = CategoryHandler.new(data, args) |
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function p._main(args) |
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if handler:isSuppressed() then |
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-- Get the page object and argument mappings from |
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return nil |
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-- [[Module:Namespace detect]], to save us from having to rewrite the |
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end |
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-- code. |
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return handler:getCategories() |
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local pageObject = nsDetect.getPageObject(args[cfg.page]) |
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local mappings = nsDetect.getParamMappings() |
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if not needsCategory(pageObject, args) then return end |
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local ret = '' |
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-- Check blacklist if necessary. |
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if not needsBlacklistCheck(args) or not p.matchesBlacklist(pageObject.prefixedText) then |
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if not nsParamsExist(mappings, args) then |
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-- No namespace parameters exist; basic usage. Pass args[1] to |
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-- [[Module:Namespace detect]] using the default namespace |
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-- parameters, and return the result. |
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local ndargs = {} |
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for _, ndarg in ipairs(cfg.defaultNamespaces) do |
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ndargs[ndarg] = args[1] |
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end |
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ndargs.page = args.page |
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ndargs.demospace = args.demospace |
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local ndresult = nsDetect.main(ndargs) |
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if ndresult then |
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ret = ret .. ndresult |
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end |
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else |
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-- Namespace parameters exist; advanced usage. |
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-- If the all parameter is specified, return it. |
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local all = args.all |
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if type(all) == 'string' then |
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ret = ret .. all |
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end |
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-- Get the arguments to pass to [[Module:Namespace detect]]. |
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local ndargs = {} |
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for ns, params in pairs(mappings) do |
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for _, param in ipairs(params) do |
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ndargs[param] = args[param] or args[cfg.other] or nil |
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end |
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end |
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ndargs.other = args.other |
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ndargs.page = args.page |
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ndargs.demospace = args.demospace |
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local data = nsDetect.main(ndargs) |
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-- Work out what to return based on the result of the namespace detect call. |
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local datanum = tonumber(data) |
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if type(datanum) == 'number' then |
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-- "data" is a number, so return that positional parameter. |
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-- Remove non-positive integer values, as only positive integers |
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-- from 1-10 were used with the old template. |
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if datanum > 0 and math.floor(datanum) == datanum then |
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local dataArg = args[datanum] |
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if type(dataArg) == 'string' then |
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ret = ret .. dataArg |
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end |
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end |
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else |
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-- "data" is not a number, so return it as it is. |
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if type(data) == 'string' then |
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ret = ret .. data |
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end |
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end |
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end |
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end |
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return ret |
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end |
end |
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function p.main(frame) |
function p.main(frame, data) |
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data = data or mw.loadData('Module:Category handler/data') |
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-- If called via #invoke, use the args passed into the invoking |
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local args = require('Module:Arguments').getArgs(frame, { |
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-- template, or the args passed to #invoke if any exist. Otherwise |
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wrappers = data.wrappers, |
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-- assume args are being passed directly in. |
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valueFunc = function (k, v) |
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local origArgs |
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v = trimWhitespace(v) |
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if frame == mw.getCurrentFrame() then |
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if type(k) == 'number' then |
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origArgs = frame:getParent().args |
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if v ~= '' then |
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for k, v in pairs(frame.args) do |
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return v |
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origArgs = frame.args |
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else |
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break |
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return nil |
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end |
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end |
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else |
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else |
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origArgs = frame |
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return v |
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end |
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end |
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end |
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-- Trim whitespace and remove blank arguments for the following args: |
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}) |
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-- 1, 2, 3 etc., "nocat", "categories", "subpage", and "page". |
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return p._main(args, data) |
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for k, v in pairs(origArgs) do |
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if type(v) == 'string' then |
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v = mw.text.trim(v) -- Trim whitespace. |
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end |
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if type(k) == 'number' |
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or k == cfg.nocat |
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or k == cfg.categories |
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or k == cfg.subpage |
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or k == cfg.page |
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then |
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if v ~= '' then |
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args[k] = v |
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end |
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else |
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args[k] = v |
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end |
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end |
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-- Lower-case "nocat", "categories", "category2", and "subpage". These |
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-- parameters are put in lower case whenever they appear in the old |
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-- template, so we can just do it once here and save ourselves some work. |
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local lowercase = {cfg.nocat, cfg.categories, cfg.category2, cfg.subpage} |
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for _, v in ipairs(lowercase) do |
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local argVal = args[v] |
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if type(argVal) == 'string' then |
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args[v] = mw.ustring.lower(argVal) |
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end |
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end |
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return p._main(args) |
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end |
end |
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Latest revision as of 06:12, 1 April 2020
Documentation for this module may be created at Module:Category handler/doc
--------------------------------------------------------------------------------
-- --
-- CATEGORY HANDLER --
-- --
-- This module implements the {{category handler}} template in Lua, --
-- with a few improvements: all namespaces and all namespace aliases --
-- are supported, and namespace names are detected automatically for --
-- the local wiki. This module requires [[Module:Namespace detect]] --
-- and [[Module:Yesno]] to be available on the local wiki. It can be --
-- configured for different wikis by altering the values in --
-- [[Module:Category handler/config]], and pages can be blacklisted --
-- from categorisation by using [[Module:Category handler/blacklist]]. --
-- --
--------------------------------------------------------------------------------
-- Load required modules
local yesno = require('Module:Yesno')
-- Lazily load things we don't always need
local mShared, mappings
local p = {}
--------------------------------------------------------------------------------
-- Helper functions
--------------------------------------------------------------------------------
local function trimWhitespace(s, removeBlanks)
if type(s) ~= 'string' then
return s
end
s = s:match('^%s*(.-)%s*$')
if removeBlanks then
if s ~= '' then
return s
else
return nil
end
else
return s
end
end
--------------------------------------------------------------------------------
-- CategoryHandler class
--------------------------------------------------------------------------------
local CategoryHandler = {}
CategoryHandler.__index = CategoryHandler
function CategoryHandler.new(data, args)
local obj = setmetatable({ _data = data, _args = args }, CategoryHandler)
-- Set the title object
do
local pagename = obj:parameter('demopage')
local success, titleObj
if pagename then
success, titleObj = pcall(mw.title.new, pagename)
end
if success and titleObj then
obj.title = titleObj
if titleObj == mw.title.getCurrentTitle() then
obj._usesCurrentTitle = true
end
else
obj.title = mw.title.getCurrentTitle()
obj._usesCurrentTitle = true
end
end
-- Set suppression parameter values
for _, key in ipairs{'nocat', 'categories'} do
local value = obj:parameter(key)
value = trimWhitespace(value, true)
obj['_' .. key] = yesno(value)
end
do
local subpage = obj:parameter('subpage')
local category2 = obj:parameter('category2')
if type(subpage) == 'string' then
subpage = mw.ustring.lower(subpage)
end
if type(category2) == 'string' then
subpage = mw.ustring.lower(category2)
end
obj._subpage = trimWhitespace(subpage, true)
obj._category2 = trimWhitespace(category2) -- don't remove blank values
end
return obj
end
function CategoryHandler:parameter(key)
local parameterNames = self._data.parameters[key]
local pntype = type(parameterNames)
if pntype == 'string' or pntype == 'number' then
return self._args[parameterNames]
elseif pntype == 'table' then
for _, name in ipairs(parameterNames) do
local value = self._args[name]
if value ~= nil then
return value
end
end
return nil
else
error(string.format(
'invalid config key "%s"',
tostring(key)
), 2)
end
end
function CategoryHandler:isSuppressedByArguments()
return
-- See if a category suppression argument has been set.
self._nocat == true
or self._categories == false
or (
self._category2
and self._category2 ~= self._data.category2Yes
and self._category2 ~= self._data.category2Negative
)
-- Check whether we are on a subpage, and see if categories are
-- suppressed based on our subpage status.
or self._subpage == self._data.subpageNo and self.title.isSubpage
or self._subpage == self._data.subpageOnly and not self.title.isSubpage
end
function CategoryHandler:shouldSkipBlacklistCheck()
-- Check whether the category suppression arguments indicate we
-- should skip the blacklist check.
return self._nocat == false
or self._categories == true
or self._category2 == self._data.category2Yes
end
function CategoryHandler:matchesBlacklist()
if self._usesCurrentTitle then
return self._data.currentTitleMatchesBlacklist
else
mShared = mShared or require('Module:Category handler/shared')
return mShared.matchesBlacklist(
self.title.prefixedText,
mw.loadData('Module:Category handler/blacklist')
)
end
end
function CategoryHandler:isSuppressed()
-- Find if categories are suppressed by either the arguments or by
-- matching the blacklist.
return self:isSuppressedByArguments()
or not self:shouldSkipBlacklistCheck() and self:matchesBlacklist()
end
function CategoryHandler:getNamespaceParameters()
if self._usesCurrentTitle then
return self._data.currentTitleNamespaceParameters
else
if not mappings then
mShared = mShared or require('Module:Category handler/shared')
mappings = mShared.getParamMappings(true) -- gets mappings with mw.loadData
end
return mShared.getNamespaceParameters(
self.title,
mappings
)
end
end
function CategoryHandler:namespaceParametersExist()
-- Find whether any namespace parameters have been specified.
-- We use the order "all" --> namespace params --> "other" as this is what
-- the old template did.
if self:parameter('all') then
return true
end
if not mappings then
mShared = mShared or require('Module:Category handler/shared')
mappings = mShared.getParamMappings(true) -- gets mappings with mw.loadData
end
for ns, params in pairs(mappings) do
for i, param in ipairs(params) do
if self._args[param] then
return true
end
end
end
if self:parameter('other') then
return true
end
return false
end
function CategoryHandler:getCategories()
local params = self:getNamespaceParameters()
local nsCategory
for i, param in ipairs(params) do
local value = self._args[param]
if value ~= nil then
nsCategory = value
break
end
end
if nsCategory ~= nil or self:namespaceParametersExist() then
-- Namespace parameters exist - advanced usage.
if nsCategory == nil then
nsCategory = self:parameter('other')
end
local ret = {self:parameter('all')}
local numParam = tonumber(nsCategory)
if numParam and numParam >= 1 and math.floor(numParam) == numParam then
-- nsCategory is an integer
ret[#ret + 1] = self._args[numParam]
else
ret[#ret + 1] = nsCategory
end
if #ret < 1 then
return nil
else
return table.concat(ret)
end
elseif self._data.defaultNamespaces[self.title.namespace] then
-- Namespace parameters don't exist, simple usage.
return self._args[1]
end
return nil
end
--------------------------------------------------------------------------------
-- Exports
--------------------------------------------------------------------------------
local p = {}
function p._exportClasses()
-- Used for testing purposes.
return {
CategoryHandler = CategoryHandler
}
end
function p._main(args, data)
data = data or mw.loadData('Module:Category handler/data')
local handler = CategoryHandler.new(data, args)
if handler:isSuppressed() then
return nil
end
return handler:getCategories()
end
function p.main(frame, data)
data = data or mw.loadData('Module:Category handler/data')
local args = require('Module:Arguments').getArgs(frame, {
wrappers = data.wrappers,
valueFunc = function (k, v)
v = trimWhitespace(v)
if type(k) == 'number' then
if v ~= '' then
return v
else
return nil
end
else
return v
end
end
})
return p._main(args, data)
end
return p