Main Page and Module:Arguments: Difference between pages

From Frontierpedia, the Microsoft Agent encyclopedia
(Difference between pages)
frontierpediav5>WikiSysop
(replaced "and" with "or")
 
en>Mr. Stradivarius
m (tweak comment)
 
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{{DISPLAYTITLE:<span style="opacity:0;position:absolute;">{{FULLPAGENAME}}</span>}}__NOTOC__
-- This module provides easy processing of arguments passed to Scribunto from #invoke.
==Welcome to Frontierpedia! The main online encyclopedia for everything TMAFE related!==
-- It is intended for use by other Lua modules, and should not be called from #invoke directly.
Frontierpedia is the successor to TMAFE Wiki (formerly the Konnor88 Wiki), which was created on June 13th, 2018. Frontierpedia had been a concept since 2019 and has been tried multiple times with this attempt finally succeeding.
<div id="misc-news" class="mainpage_row">
<div class="mainpage_box">
<h3><span class="header_icon" aria-hidden="true" role="presentation">[[File:20px_Pencil.png|middle|link=]]</span>Help</h3>Confused about something related to the wiki? Tutorials and resources will be added here overtime to assist you.


* [[Help:List of Infobox Templates|List of infobox templates]]
local libraryUtil = require('libraryUtil')
* [[Help:Adding Missing Images|Adding missing images]]
local checkType = libraryUtil.checkType
* [[Help:Export Pages from TMAFE Wiki and Import to Frontierpedia|Export pages from TMAFE Wiki and import to Frontierpedia]]
* [[Help:Adding Categories to a Page|Adding categories to a page]]
* [[Help:Create a page|Creating a page]]
* [[Help:Dealing with errors|Dealing with errors]]
* [[Manual of Style|The basics of editing]]
* [[Frontierpedia:Staff list|List of staff]]
* [[Help:Customization|Customizing a user page, avatar, or theme]]
</div>
<div class="mainpage_box">
<h3><span class="header_icon" aria-hidden="true" role="presentation">https://upload.wikimedia.org/wikipedia/commons/thumb/3/3d/Picto-seisme.svg/20px-Picto-seisme.svg.png</span>Recent Changes</h3>{{Special:SimpleChanges/10}}


More information about these changes can be found at [[Special:RecentChanges]].
local arguments = {}
</div>
<div class="mainpage_box">
<h3><span class="header_icon" aria-hidden="true" role="presentation">[[File:20px_Megaphone.png]]</span> News</h3>


*'''June 12th, 2021''' - The search feature inside the wiki has been improved and there is also an improved notification system.
local nilArg = {} -- Used for memoizing nil arguments in metaArgs.
*'''April 25th, 2021''' - The search bar and search page are now no longer case sensitive. This means means searching something such as "a" can make it show pages with capital As instead of nothing at all. Support for math symbols and math formulas was also added to the wiki.
*'''April 18th, 2021''' - HitCounter extension added. AbuseFilter has also been modified to prevent a nuke of the wiki, as TMAFE was nuked earlier and lost over 135 members from the rogue admin. It is also now possible to create a page from the sidebar.
<span class="plainlinks">[https://frontierpedia.tmafe.com/index.php/Frontierpedia:News <span class="mw-ui-button mw-ui-constructive mw-ui-small">Older News</span>]</span>
</div>


</div>
-- Generate four different tidyVal functions, so that we don't have to check the options every time we call it.
<div class="mainpage_box">
<h3><span class="header_icon" aria-hidden="true" role="presentation">[[File:20px_Rules.png|middle|link=]]</span>Rules</h3>


# All of TMAFE's server rules apply here. These rules can be found in the #server-rules channel on TMAFE's Discord.
local function tidyValDefault(key, val)
# Spam articles are not allowed and will be quickly deleted.
if type(val) == 'string' then
# Follow the wiki's manual of style.
val = val:match('^%s*(.-)%s*$')
# Obey all other rules of TMAFE such as the license agreement.
if val == '' then
# Vandalizing of pages is strictly prohibited.
return nil
# Organizing raids on this wiki is prohibited.
else
# Doxxing information that a user wishes to keep private will result in permanent block.
return val
# Doing or promoting illegal activity is strictly prohibited.
end
# Inserting false/misleading information is prohibited.
else
# Identity politics and discussion of them are prohibited as the state of Georgia doesn't recognize most topics regarding identity politics. This includes topics such as gender.
return val
# Enjoy your time at Frontierpedia!
end
</div>
end


[[Category:Wiki]]
local function tidyValTrimOnly(key, val)
if type(val) == 'string' then
return val:match('^%s*(.-)%s*$')
else
return val
end
end
 
local function tidyValRemoveBlanksOnly(key, val)
if type(val) == 'string' then
if val:find('%S') then
return val
else
return nil
end
else
return val
end
end
 
local function tidyValNoChange(key, val)
return val
end
 
function arguments.getArgs(frame, options)
checkType('getArgs', 1, frame, 'table', true)
checkType('getArgs', 2, options, 'table', true)
frame = frame or {}
options = options or {}
 
-- Get the arguments from the frame object if available. If the frame object is not available, we are being called
-- from another Lua module or from the debug console, so assign the args to a new variable so we can differentiate them.
local fargs, pargs, luaArgs
if type(frame.args) == 'table' and type(frame.getParent) == 'function' then
if not options.parentOnly then
fargs = frame.args
end
if not options.frameOnly then
pargs = frame:getParent().args
end
if options.parentFirst then
fargs, pargs = pargs, fargs
end
else
luaArgs = frame
end
 
-- Set up the args and metaArgs tables. args will be the one accessed from functions, and metaArgs will hold the actual arguments.
-- The metatable connects the two together.
local args, metaArgs, metatable = {}, {}, {}
setmetatable(args, metatable)
 
-- Generate the tidyVal function. If it has been specified by the user, we use that; if not, we choose one of four functions
-- depending on the options chosen. This is so that we don't have to call the options table every time the function is called.
local tidyVal = options.valueFunc
if tidyVal then
if type(tidyVal) ~= 'function' then
error("bad value assigned to option 'valueFunc' (function expected, got " .. type(tidyVal) .. ')', 2)
end
elseif options.trim ~= false then
if options.removeBlanks ~= false then
tidyVal = tidyValDefault
else
tidyVal = tidyValTrimOnly
end
else
if options.removeBlanks ~= false then
tidyVal = tidyValRemoveBlanksOnly
else
tidyVal = tidyValNoChange
end
end
 
local function mergeArgs(iterator, tables)
-- Accepts multiple tables as input and merges their keys and values into one table using the specified iterator.
-- If a value is already present it is not overwritten; tables listed earlier have precendence.
-- We are also memoizing nil values, but those values can be overwritten.
for _, t in ipairs(tables) do
for key, val in iterator(t) do
local metaArgsVal = metaArgs[key]
if metaArgsVal == nil or metaArgsVal == nilArg then
local tidiedVal = tidyVal(key, val)
if tidiedVal == nil then
metaArgs[key] = nilArg
else
metaArgs[key] = tidiedVal
end
end
end
end
end
 
-- Set the order of precedence of the argument tables. If the variables are nil, nothing will be added to the table,
-- which is how we avoid clashes between the frame/parent args and the Lua args.
local argTables = {fargs}
argTables[#argTables + 1] = pargs
argTables[#argTables + 1] = luaArgs
 
--[[
-- Define metatable behaviour. Arguments are memoized in the metaArgs table, and are only fetched from the
-- argument tables once. Nil arguments are also memoized using the nilArg variable in order to increase
-- performance. Also, we keep a record in the metatable of when pairs and ipairs have been called, so we
-- do not run pairs and ipairs on fargs and pargs more than once. We also do not run ipairs on fargs and
-- pargs if pairs has already been run, as all the arguments will already have been copied over.
--]]
 
metatable.__index = function (t, key)
local val = metaArgs[key]
if val ~= nil then
if val == nilArg then
return nil
else
return val
end
end
for _, argTable in ipairs(argTables) do
local argTableVal = tidyVal(key, argTable[key])
if argTableVal == nil then
metaArgs[key] = nilArg
else
metaArgs[key] = argTableVal
return argTableVal
end
end
return nil
end
 
metatable.__newindex = function (t, key, val)
if options.readOnly then
error('could not write to argument table key "' .. tostring(key) .. '"; the table is read-only', 2)
elseif options.noOverwrite and args[key] ~= nil then
error('could not write to argument table key "' .. tostring(key) .. '"; overwriting existing arguments is not permitted', 2)
elseif val == nil then
metaArgs[key] = nilArg -- Memoize nils.
else
metaArgs[key] = val
end
end
 
metatable.__pairs = function ()
if not metatable.donePairs then
mergeArgs(pairs, argTables)
metatable.donePairs = true
metatable.doneIpairs = true
end
return pairs(metaArgs)
end
 
metatable.__ipairs = function ()
if not metatable.doneIpairs then
mergeArgs(ipairs, argTables)
metatable.doneIpairs = true
end
return ipairs(metaArgs)
end
 
return args
end
 
return arguments

Revision as of 03:13, 12 December 2013

Documentation for this module may be created at Module:Arguments/doc

-- This module provides easy processing of arguments passed to Scribunto from #invoke.
-- It is intended for use by other Lua modules, and should not be called from #invoke directly.

local libraryUtil = require('libraryUtil')
local checkType = libraryUtil.checkType

local arguments = {}

local nilArg = {} -- Used for memoizing nil arguments in metaArgs.

-- Generate four different tidyVal functions, so that we don't have to check the options every time we call it.

local function tidyValDefault(key, val)
	if type(val) == 'string' then
		val = val:match('^%s*(.-)%s*$')
		if val == '' then
			return nil
		else
			return val
		end
	else
		return val
	end
end

local function tidyValTrimOnly(key, val)
	if type(val) == 'string' then
		return val:match('^%s*(.-)%s*$')
	else
		return val
	end
end

local function tidyValRemoveBlanksOnly(key, val)
	if type(val) == 'string' then
		if val:find('%S') then
			return val
		else
			return nil
		end
	else
		return val
	end
end

local function tidyValNoChange(key, val)
	return val
end

function arguments.getArgs(frame, options)
	checkType('getArgs', 1, frame, 'table', true)
	checkType('getArgs', 2, options, 'table', true)
	frame = frame or {}
	options = options or {}

	-- Get the arguments from the frame object if available. If the frame object is not available, we are being called
	-- from another Lua module or from the debug console, so assign the args to a new variable so we can differentiate them.
	local fargs, pargs, luaArgs
	if type(frame.args) == 'table' and type(frame.getParent) == 'function' then
		if not options.parentOnly then
			fargs = frame.args
		end
		if not options.frameOnly then
			pargs = frame:getParent().args
		end
		if options.parentFirst then
			fargs, pargs = pargs, fargs
		end
	else
		luaArgs = frame
	end

	-- Set up the args and metaArgs tables. args will be the one accessed from functions, and metaArgs will hold the actual arguments.
	-- The metatable connects the two together.
	local args, metaArgs, metatable = {}, {}, {}
	setmetatable(args, metatable)

	-- Generate the tidyVal function. If it has been specified by the user, we use that; if not, we choose one of four functions
	-- depending on the options chosen. This is so that we don't have to call the options table every time the function is called.
	local tidyVal = options.valueFunc
	if tidyVal then
		if type(tidyVal) ~= 'function' then
			error("bad value assigned to option 'valueFunc' (function expected, got " .. type(tidyVal) .. ')', 2)
		end
	elseif options.trim ~= false then
		if options.removeBlanks ~= false then
			tidyVal = tidyValDefault
		else
			tidyVal = tidyValTrimOnly
		end
	else
		if options.removeBlanks ~= false then
			tidyVal = tidyValRemoveBlanksOnly
		else
			tidyVal = tidyValNoChange
		end
	end

	local function mergeArgs(iterator, tables)
		-- Accepts multiple tables as input and merges their keys and values into one table using the specified iterator.
		-- If a value is already present it is not overwritten; tables listed earlier have precendence.
		-- We are also memoizing nil values, but those values can be overwritten.
		for _, t in ipairs(tables) do
			for key, val in iterator(t) do
				local metaArgsVal = metaArgs[key]
				if metaArgsVal == nil or metaArgsVal == nilArg then
					local tidiedVal = tidyVal(key, val)
					if tidiedVal == nil then
						metaArgs[key] = nilArg
					else
						metaArgs[key] = tidiedVal
					end
				end
			end
		end
	end

	-- Set the order of precedence of the argument tables. If the variables are nil, nothing will be added to the table,
	-- which is how we avoid clashes between the frame/parent args and the Lua args.	
	local argTables = {fargs}
	argTables[#argTables + 1] = pargs
	argTables[#argTables + 1] = luaArgs

	--[[
	-- Define metatable behaviour. Arguments are memoized in the metaArgs table, and are only fetched from the
	-- argument tables once. Nil arguments are also memoized using the nilArg variable in order to increase
	-- performance. Also, we keep a record in the metatable of when pairs and ipairs have been called, so we
	-- do not run pairs and ipairs on fargs and pargs more than once. We also do not run ipairs on fargs and
	-- pargs if pairs has already been run, as all the arguments will already have been copied over.
	--]]

	metatable.__index = function (t, key)
		local val = metaArgs[key]
		if val ~= nil then
			if val == nilArg then
				return nil
			else
				return val
			end
		end
		for _, argTable in ipairs(argTables) do
			local argTableVal = tidyVal(key, argTable[key])
			if argTableVal == nil then
				metaArgs[key] = nilArg
			else
				metaArgs[key] = argTableVal
				return argTableVal
			end
		end
		return nil
	end

	metatable.__newindex = function (t, key, val)
		if options.readOnly then
			error('could not write to argument table key "' .. tostring(key) .. '"; the table is read-only', 2)
		elseif options.noOverwrite and args[key] ~= nil then
			error('could not write to argument table key "' .. tostring(key) .. '"; overwriting existing arguments is not permitted', 2)
		elseif val == nil then
			metaArgs[key] = nilArg -- Memoize nils.
		else
			metaArgs[key] = val
		end
	end

	metatable.__pairs = function ()
		if not metatable.donePairs then
			mergeArgs(pairs, argTables)
			metatable.donePairs = true
			metatable.doneIpairs = true
		end
		return pairs(metaArgs)
	end

	metatable.__ipairs = function ()
		if not metatable.doneIpairs then
			mergeArgs(ipairs, argTables)
			metatable.doneIpairs = true
		end
		return ipairs(metaArgs)
	end

	return args
end

return arguments