Module:Storm categories

This template is used to control a multitude of tropical cyclone-related templates:

1. REDIRECT Template:Template link

, {{storm name}}, {{storm sortkey}}, and {{storm icon}}. It acts as a centralized location for storm categories to avoid discrepancies between templates, allowing for the same ID to be used across all related templates.

Data is located in the following submodules:

• Module:Storm categories/categories for fully-detailed storm categories
• Module:Storm categories/colors for color-only IDs
• Module:Storm categories/icons for icon-only IDs

Usage

This module exports three functions for templates: p.color, p.name, p.sortkey, and p.icon. It also provides p._color, p._name, p._sortkey, and p._icon for use in other modules.

All input IDs are case-insensitive, and all non-alphanumeric characters are stripped.

Color

Provides the color of the given tropical cyclone category code. This comes in the format of their raw hexadecimal code. This function is available as a template at {{storm colour}}.

Code	Output
<span style="padding:4px;border:1px solid black;background-color:#{{#invoke:Storm categories|color|depression}}">depression</span>	<span style="padding:4px;border:1px solid black;background-color:#">depression

Name

Provides the name of the given tropical cyclone category code. A optional basin argument can be provided as the second argument in order to slightly tweak the name of the category, if the given category definition supports it. This function is available as a template at {{storm name}}.

Code	Interpreted		Output
	ID	Basin
{{#invoke:Storm categories|name|severe}}	severe	(default)
{{#invoke:Storm categories|name|spr - cYcL -s TorM}}	sprcyclstorm	(default)
{{#invoke:Storm categories|name|cat5}}	cat5	(default)
{{#invoke:Storm categories|name|cat5|ATl}}	cat5	ATl
{{#invoke:Storm categories|name|cat5|WPac}}	cat5	WPac

Sortkey

The sortkey is a number that aids in sorting categories. Using the sortkey, it is possible to automatically sort a table of tropical cyclones given their category code. Due to the ambiguous nature of sortkeys, tables may be sorted incorrectly if values from other basins were used. For categories that span multiple basins, however, (e.g. depression and storm) they are given the lowest possible sortkeys in order to achieve maximum compatibility.

This sortkey is used in {{storm sortkey}} and {{Tropical cyclone season effects (cyclone)}}, a subtemplate of {{Tropical cyclone season effects}}.

The sortkey format is as follows. Note that not all values between the given ranges were used. The arrangement of these were determined by their positions in the {{Storm colour}} template.

Basin	Sortkey range
Global (unused)	90000 to 99999
Atl/EPac/SAtl	80000 to 89999
WPac	60000 to 69999
Nio	50000 to 59999
Aus/Fiji	40000 to 49999
SWio	30000 to 39999
Historical	20000 to 29999
Global	0 to 9999

A demonstration of a sortable table using these sortkeys can be found below. Note that it does not use categories outside of its own basin (in this case, the Atl/EPac/SAtl basin) and the global range.

Category	Sortkey	Code
cat3		{{#invoke:Storm categories|sortkey|cat3}}
cat1		{{#invoke:Storm categories|sortkey|cat1}}
cat5		{{#invoke:Storm categories|sortkey|cat5}}
cat4		{{#invoke:Storm categories|sortkey|cat4}}
depression		{{#invoke:Storm categories|sortkey|depression}}
cat2		{{#invoke:Storm categories|sortkey|cat2}}

Sorting table which uses different basins

Category Sortkey Code typhoon {{#invoke:Storm categories|sortkey|typhoon}} potential {{#invoke:Storm categories|sortkey|potential}} cat5 {{#invoke:Storm categories|sortkey|cat5}} svrcyclstorm {{#invoke:Storm categories|sortkey|svrcyclstorm}} unknown {{#invoke:Storm categories|sortkey|unknown}} supertyphoon {{#invoke:Storm categories|sortkey|supertyphoon}} niodepression {{#invoke:Storm categories|sortkey|niodepression}}

Icon

Icons exist for some Storm categories for presentation purposes. This function is available as a template at {{storm icon}}. p.icon will return wikitext of an image or formatted text.

Full list of available values

The following table is generated by invoking the demo function of this module. Some IDs are only available as colors or icons because they existed as parameters on old non-module template implementations and cannot be feasibly aliased to a specific tropical cyclone category.

It will show any color errors, including colors which aren't compliant with the minimal Web Content Accessibility Guidelines 2.0 AA color standards (see MOS:COLOR for more information).

---

local categoryData = require("Module:Storm categories/categories")
local colors = require("Module:Storm categories/colors").colors
local icons = require("Module:Storm categories/icons").icons
local cats = categoryData.cats
local defaultCategory = categoryData.defaultCategory
local p = {}

function p.color(frame)
	return p._color(frame.args[1] or frame:getParent().args[1], false)
end

function p.name(frame)
	return p._name(
		frame.args[1] or frame:getParent().args[1],
		frame.args[2] or frame:getParent().args[2],
		false
	)
end

function p.sortkey(frame)
	return p._sortkey(frame.args[1] or frame:getParent().args[1], false)
end

function p.icon(frame)
	return p._icon(frame.args[1] or frame:getParent().args[1], false)
end

function p.isEqual(frame)
	return p._isEqual(
		frame.args[1] or frame:getParent().args[1],
		frame.args[2] or frame:getParent().args[2]
	) and "yes" or ""
end

function p._normalizeId(category, fallback)
	-- Normalize if normalizable, fall back to default if not.
	return (category ~= nil and string.len(category) ~= 0) and
		string.gsub(string.lower(category), "[^%w]", "") or fallback
end

function p._color(category, nilIfMissing)
	-- This looks confusing, but it's actually nested ternaries (for nil checks)
	local color = p._normalizeId(category, defaultCategory)
		
	return colors[color] or ((cats[color] or (
		nilIfMissing
		and { color = nil }
		or cats[defaultCategory]
	)).color)
end

function p._name(category, basin, nilIfMissing)
	local name_def = (cats[
		p._normalizeId(category, defaultCategory)
	] or (nilIfMissing and { name = nil } or cats[defaultCategory])).name
	return type(name_def) == "table" and 
		(
			name_def[string.lower(basin or "default")]
			or name_def["default"]
			or (not nilIfMissing and error("No default name for basin-based category name.") or nil)
		) 
		or name_def
end

function p._sortkey(category, nilIfMissing)
	-- This looks confusing, but it's actually nested ternaries (for nil checks)
	return (cats[
		p._normalizeId(category, defaultCategory)
	] or (nilIfMissing and { sortkey = nil } or cats[defaultCategory])).sortkey
end

function p._icon(category, nilIfMissing)
	-- This looks confusing, but it's actually nested ternaries (for nil checks)
	local icon = p._normalizeId(category, defaultCategory)
		
	return icons[icon] or (cats[icon] ~= nil and (
		cats[icon].icon or cats["tropicalcyclone"].icon
	) or (not nilIfMissing and cats[defaultCategory].icon) or nil)
end

function p._isEqual(category1, category2)
	-- Checks if two IDs are equal.
	-- An {{#ifeq}} check does not consider aliases. This function compares two
	-- IDs in a way that considers category aliases. This works because alias
	-- assignments are references to the actual table containing the category
	-- info found in the main category table.
	-- 
	-- `false` will be returned if at least one of the categories are nil or
	-- if the category is not defined.
	local _category1 = p._normalizeId(category1)
	local _category2 = p._normalizeId(category2)
	return (_category1 == _category2 and _category1 ~= nil) or
		cats[ _category1 ] == cats[ _category2 ] and
			-- `false` if categories are undefined and not equal.
			cats[ _category1 ] ~= nil
end

function p.demo(frame)
	return require("Module:Storm categories/demo").demo(frame)
end

return p