Module:Geological time

require('strict')

local getArgs = require('Module:Arguments').getArgs

local catPair = require('Module:Category pair')._pair

local p = {}

-- Ordered list of eons, era, periods, etc. The code will search through

-- these lists for a match, then return an appropriate link to the timespans

-- adjacent to those matches

p.eon = {'Hadean', 'Archean', 'Proterozoic', 'Phanerozoic'}

p.era = {'Eoarchean', 'Paleoarchean', 'Mesoarchean', 'Neoarchean',

'Paleoproterozoic', 'Mesoproterozoic', 'Neoproterozoic',

'Paleozoic', 'Mesozoic', 'Cenozoic'}

p.period = {'Siderian', 'Rhyacian', 'Orosirian', 'Statherian',

'Calymmian', 'Ectasian', 'Stenian',

'Tonian', 'Cryogenian', 'Ediacaran',

'Cambrian', 'Ordovician', 'Silurian', 'Devonian', 'Carboniferous', 'Permian',

'Triassic', 'Jurassic', 'Cretaceous', 'Paleogene', 'Neogene', 'Quaternary'}

p.epoch = {'Terreneuvian', 'Cambrian Series 2', 'Miaolingian', 'Furongian',

'Early Ordovician', 'Middle Ordovician', 'Late Ordovician',

{base='Llandovery', dab='epoch'}, {base='Wenlock', dab='epoch'},

{base='Ludlow', dab='epoch'}, {base='Pridoli', dab='epoch'},

'Early Devonian', 'Middle Devonian', 'Late Devonian',

{base='Mississippian', dab='(geology)'}, {base='Pennsylvanian',dab='(geology)'},

'Cisuralian', 'Guadalupian', 'Lopingian',

'Early Triassic', 'Middle Triassic', 'Late Triassic',

'Early Jurassic', 'Middle Jurassic', 'Late Jurassic',

'Early Cretaceous', 'Late Cretaceous',

'Paleocene', 'Eocene', 'Oligocene',

'Miocene', 'Pliocene', 'Pleistocene', 'Holocene'}

p.series = {'Furongian',

'Lower Ordovician', 'Middle Ordovician', 'Upper Ordovician',

'Llandovery', 'Wenlock', 'Ludlow', 'Pridoli',

'Lower Devonian', 'Middle Devonian', 'Upper Devonian',

'Lower Carboniferous', 'Upper Carboniferous',

'Cisuralian', 'Guadalupian', 'Lopingian',

'Lower Triassic', 'Middle Triassic', 'Upper Triassic',

'Lower Jurassic', 'Middle Jurassic', 'Upper Jurassic',

'Lower Cretaceous', 'Upper Cretaceous','Paleocene'}

p.age = {'Fortunian', 'Cambrian Stage 2', 'Cambrian Stage 3', 'Cambrian Stage 4',

'Wuliuan', 'Drumian', 'Guzhangian', 'Paibian', 'Jiangshanian', 'Cambrian Stage 10',

'Tremadocian', 'Floian', 'Dapingian', 'Darriwilian', 'Sandbian', 'Katian', 'Hirnantian',

'Rhuddanian', 'Aeronian', 'Telychian', 'Sheinwoodian', 'Homerian', 'Gorstian', 'Ludfordian',

'Lochkovian', 'Pragian', 'Emsian', 'Eifelian', 'Givetian', 'Frasnian', 'Famennian',

'Tournaisian', 'Viséan', 'Serpukhovian', 'Bashkirian', {base='Moscovian', dab='(Carboniferous)'}, 'Kasimovian', 'Gzhelian',

'Asselian', 'Sakmarian', 'Artinskian', 'Kungurian', 'Roadian', 'Wordian', 'Capitanian', 'Wuchiapingian', 'Changhsingian',

'Induan', 'Olenekian', 'Anisian', 'Ladinian', 'Carnian', 'Norian', 'Rhaetian',

'Hettangian', 'Sinemurian', 'Pliensbachian', 'Toarcian', 'Aalenian', 'Bajocian',

'Bathonian', 'Callovian', {base='Oxfordian', dab='(stage)'}, 'Kimmeridgian', 'Tithonian',

'Berriasian','Valanginian','Hauterivian','Barremian','Aptian','Albian',

'Cenomanian','Turonian','Coniacian','Santonian','Campanian','Maastrichtian',

'Danian','Selandian','Thanetian','Ypresian','Lutetian','Bartonian','Priabonian','Rupelian','Chattian',

{base='Aquitanian', dab='(stage)'},'Burdigalian','Langhian','Serravallian','Tortonian','Messinian','Zanclean','Piacenzian',

'Gelasian',{base='Calabrian', dab='(stage)'},'Late Pleistocene','Greenlandian','Northgrippian','Meghalayan'}

-- Determine whether a query string matches a stored timespan string

-- Arguments:

-- s: query string

-- sub: standard name of timespan

-- Returns:

-- false if there is no match

-- prefix and suffix of match, otherwise

local function matches(s, sub)

local sLen = mw.ustring.len(s)

local subLen = mw.ustring.len(sub)

if subLen > sLen then

return false

end

local lowerS = mw.ustring.lower(s)

local lowerSub = mw.ustring.lower(sub)

local startOffset, endOffset = mw.ustring.find(lowerS,lowerSub,1,true)

if not startOffset then

return false

end

return (mw.ustring.sub(s,1,startOffset-1) or ""), (mw.ustring.sub(s,endOffset+1) or "")

end

-- Create list of strings to search corresponding to a standard timespan

-- Some timespans are disambiguated: first search for the dabbed title, then

-- the base title. Otherwise just search for the standard timespan string

-- Argument:

-- span = value in timespan lists (above)

-- Returns:

-- list of strings to search in query string

local function searchStringList(span)

if type(span) == "table" then

return {span.base.." "..span.dab, span.base}

end

return {span}

end

-- When an adjacent time span is found, this function returns the

-- corresponding basename for the page.

-- Arguments:

-- span: adjacent entry from table, above

-- prefix: prefix of query string before match

-- suffix: remainder of original query string beyond match

-- Returns:

-- page title

--

-- If the adjacent time span is dabbed, then return the dab if the suffix

-- is empty. If the suffix is non-empty (e.g., "life"), append it to the base

-- name of the span (e.g., "Oxfordian") --> "Oxfordian life"

local function matchedString(span, prefix, suffix)

if type(span) == "table" then

if prefix == "" and suffix == "" then

return span.base.." "..span.dab

end

return prefix..span.base..suffix

end

return prefix..span..suffix

end

-- Function to find the page titles of time spans adjacent to a query string

-- Arguments:

-- s: query string to search for

local function find(s)

-- Search from most-specific to least, to catch "Cambrian Series 2" before "Cambrian"

for _, list in ipairs({p.age, p.epoch, p.series, p.period, p.era, p.eon}) do

local listLen = #list

for i, span in ipairs(list) do

-- Each timespan might have more than one search string

for _, searchString in ipairs(searchStringList(span)) do

local prefix, suffix = matches(s, searchString)

if suffix then

local prevSpan = i > 1 and matchedString(list[i-1], prefix, suffix)

local nextSpan = i < listLen and matchedString(list[i+1], prefix, suffix)

-- return first match found

return {prev=prevSpan, next=nextSpan}

end

end

end

end

return nil

end

-- Lua entry point to generate see also hatnote for geological time spans adjanct in time

-- Arguments:

-- args[1]: name of page to generate adjacency (current page if None)

-- Returns:

-- See also previous and next, formatted as a hatnote

function p._seeAlso(args)

local title = args[1] and mw.title.new(args[1]) or mw.title.getCurrentTitle()

local basetext = title.baseText

local namespace = title.namespace

local adjacent = find(basetext)

if not adjacent then

local warning = require('Module:If preview')._warning

local warn = warning({"Cannot find geological time frame in "..basetext})

if mw.title.getCurrentTitle().nsText ~= "Template" then

warn = warn.."Category:Missing geological time frame"

end

return warn

end

local prevTitle = adjacent.prev and mw.title.new(adjacent.prev, namespace)

local nextTitle = adjacent.next and mw.title.new(adjacent.next, namespace)

return catPair(prevTitle, nextTitle)

end

-- Function to find timespan before argument

function p._before(s)

local findOut = s and find(tostring(s))

return findOut and findOut.prev

end

-- Function to find timespan after argument

function p._after(s)

local findOut = s and find(tostring(s))

return findOut and findOut.next

end

-- Template entry points

function p.seeAlso(frame)

local args = getArgs(frame)

return p._seeAlso(args)

end

function p.before(frame)

local args = getArgs(frame)

return p._before(args[1]) or ""

end

function p.after(frame)

local args = getArgs(frame)

return p._after(args[1]) or ""

end

return p