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Module:Road data/locations

Permanently protected module
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local p = {}

local parserModule = require("Module:Road data/parser")
local util = require("Module:Road data/util")

local format = mw.ustring.format
local trim = mw.text.trim
local parser = parserModule.parser

local function stateName(args)
	-- TODO transition
	local data = mw.loadData("Module:Jct/statename") 
	local abbr = args.state or args.province
	local countryData = data[args.country]
	return countryData and countryData[abbr]
end

function p.locations(args, module, group)
	module = module or ""
	local modulearticle = module .. "article"
	local moduleprefix = module .. "prefix"
	local modulenameprefix = module .. "nameprefix"
	local modulenamesuffix = module .. "namesuffix"

	local warnings = {}

	-- Region, for disambiguation
	local region = parserModule.parser(args, "region", " common ")
	if not region then
		-- TODO transition
		if args.region then
			warnings.region = "region parameter is deprecated"
			region = args.region
		elseif args.country and (args.state or args.province) then
			warnings.region = "Inferring region from country and state/province"
			region = stateName(args)
		end
	end
	local regionName
	local regionText
	if type(region) == "table" then
		regionName = region.name
		regionText = format("[[%s|%s]]", region.link, regionName)
	elseif region then
		regionName = region
		regionText = format("[[%s]]", regionName)
	end
	args.region = regionName

	local locations = parserModule.parser(args, "locations", " common ") or {}

	-- Primary topic requires no specialization to supplied locations.
	local primaryTopic = not locations and module == "jctint" and args.primary_topic ~= 'no'
	if args.primary_topic then
		-- TODO transition
		warnings.primary_topic = "primary_topic parameter is deprecated"
	end

	-- Independent city
	local indepCityText
	if args.indep_city_special then
		indepCityText = args.indep_city_special -- Overrides `indep_city` argument.
	elseif args.indep_city then
		local indepCity = args.indep_city
		local spec = locations.indep_city
		if spec then
			local link = format("%s%s%s",
				spec.linkprefix or "", indepCity, spec.linksuffix or "")
			local name = format("%s%s%s",
				spec[modulenameprefix] or spec.nameprefix or "",
				indepCity,
				spec[modulenamesuffix] or spec.namesuffix or "")
			indepCityText = format("%s%s[[%s|%s]]",
				spec[modulearticle] or spec.article or "",
				spec[moduleprefix] or spec.prefix or "",
				link, name)
		else
			-- TODO transition
			warnings.indep_city = "Spec for indep_city parameter undefined in road data module"
			local cityLink -- Wikilink for independent city
			if primaryTopic then
				cityLink = format('[[%s]]', indepCity)
			else
				-- Specialize independent city to the region.
				cityLink = format('[[%s, %s|%s]]', indepCity, region, indepCity)
			end
			indepCityText = "[[Independent city|City]] of " .. cityLink
		end
	end
	if indepCityText then
		return {region = regionText, indep_city = indepCityText, warnings = warnings}
	end

	-- First-level subdivision, e.g., county
	-- Name of the type of subdivision, e.g., "County" and "Parish"
	local sub1name = args.sub1name -- TODO transition
	local sub1Text
	if args.sub1_special then
		sub1Text = args.sub1_special -- Overrides `sub1` argument.
	elseif args.sub1 then
		local sub1 = args.sub1
		local article
		local link = sub1
		local name = sub1
		-- Type of first-level subdivision area, as a form of disambiguation
		local sub1area = args.sub1area
		if sub1area then
			local sub1areaSpec = locations.sub1areas and locations.sub1areas[sub1area]
			if sub1areaSpec then
				article = sub1areaSpec[modulearticle] or sub1areaSpec.article or ""
				link = format("%s%s%s",
					sub1areaSpec.linkprefix or "", link, sub1areaSpec.linksuffix or "")
				name = format("%s%s%s",
					group and "" or sub1areaSpec[modulenameprefix] or sub1areaSpec.nameprefix or "",
					name,
					group and "" or sub1areaSpec[modulenamesuffix] or sub1areaSpec.namesuffix or "")
			else
				-- TODO report error
				local errMsg = util.err(format("Undefined sub1area: %s", sub1area))
				name = format("%s%s", name, errMsg)
			end
		end
		if locations.sub1 then
			local spec = locations.sub1
			-- Prepend and append text from spec.
			link = format("%s%s%s",
				spec.linkprefix or "", link, spec.linksuffix or "")
			name = format("%s%s%s",
				spec[modulenameprefix] or spec.nameprefix or "",
				name,
				spec[modulenamesuffix] or spec.namesuffix or "")
			sub1Text = format("%s[[%s|%s]]", article or "", link, name)
		else
			-- TODO transition
			warnings.sub1 = "Spec for sub1 parameter undefined in road data module"
			-- Add type (if specified) to wikilink for first-level subdivision.
			local sub1Link = sub1name and trim(format("%s %s", sub1, sub1name)) or sub1
			local sub1Name = module == "jcttop" and sub1Link or sub1
			if primaryTopic then
				sub1Text = format('[[%s|%s]]', sub1Link, sub1Name)
			else
				-- Specialize first-level subdivision, with type added, to the region.
				sub1Text = format('[[%s, %s|%s]]', sub1Link, region, sub1Name)
			end
		end
	end

	-- Second-level subdivision, e.g., city and town
	local sub2Text
	if args.sub2_special then
		sub2Text = args.sub2_special -- Overrides `sub2` argument.
	elseif args.sub2 then
		local sub2 = args.sub2
		if sub2 == "none" then
			sub2Text = "​" -- Zero-width space
		elseif sub2 == " " then
			-- TODO transition
			warnings.sub2 = "  argument for sub2 parameter is deprecated"
			sub2Text = "​" -- Zero-width space
		elseif primaryTopic then
			-- TODO transition
			sub2Text = format("[[%s]]", sub2)
		else
			local article
			local link = sub2
			local name = sub2
			-- Type of area, e.g., city and village, as a form of disambiguation
			local sub2area = args.sub2area --[[TODO transition]] or args.area
			if sub2area then
				local sub2areaSpec = locations.sub2areas and locations.sub2areas[sub2area]
				if not sub2areaSpec then
					-- TODO transition
					warnings.sub2 =
						format("Spec for area parameter '%s' undefined in road data module", sub2area)
					local sub2areas = { -- table of different area types
						city = {
							linksuffix = " (city)",
							jcttoparticle = "the ",
							nameprefix = "City of "
						},
						town = {
							linksuffix = " (town)",
							jcttoparticle = "the ",
							nameprefix = "Town of "
						},
						village = {
							linksuffix = " (village)",
							jcttoparticle = "the ",
							nameprefix = "Village of "
						},
						community = {
							linksuffix = " (community)",
							jcttoparticle = "the ",
							nameprefix = "Community of "
						},
						CDP = {
							linksuffix = " (CDP)",
							jcttoparticle = "the ",
							nameprefix = "Community of "
						},
						hamlet = {
							linksuffix = " (hamlet)",
							jcttoparticle = "the ",
							nameprefix = "Hamlet of "
						},
						["unorganized territory"] = {
							linksuffix = " (unorganized territory)",
							jcttoparticle = "the ",
							nameprefix = "Unorganized Territory of "
						},
						township = {
							linksuffix = " Township",
							namesuffix = " Township",
						}
					}
					sub2areaSpec = sub2areas[sub2area]
				end
				if sub2areaSpec then
					article = sub2areaSpec[modulearticle] or sub2areaSpec.article or ""
					link = format("%s%s%s",
						sub2areaSpec.linkprefix or "", link, sub2areaSpec.linksuffix or "")
					name = format("%s%s%s",
						group and "" or sub2areaSpec[modulenameprefix] or sub2areaSpec.nameprefix or "",
						name,
						group and "" or sub2areaSpec[modulenamesuffix] or sub2areaSpec.namesuffix or "")
				else
					-- TODO report error
					local errMsg = util.err(format("Undefined sub2area: %s", sub2area))
					name = format("%s%s", name, errMsg)
				end
			end
			if locations.sub2 then
				local spec = locations.sub2
				-- Prepend and append text from spec.
				link = format("%s%s%s",
					spec.linkprefix or "", link, spec.linksuffix or "")
				name = format("%s%s%s",
					spec[modulenameprefix] or spec.nameprefix or "",
					name,
					spec[modulenamesuffix] or spec.namesuffix or "")
			else
				-- TODO transition
				warnings.sub2 = "Spec for sub2 parameter undefined in road data module"
				-- Some second-level subdivisions are not unique in a given region.
				-- `sub1dab` is the first-level subdivision to be used for disambiguation.
				local sub1dab = args.sub1dab
				if sub1dab then
					sub1dab = sub1name and trim(format("%s %s", sub1dab, sub1name)) or sub1dab
					link = format("%s, %s", link, sub1dab)
				end
				link = format("%s, %s", link, region) -- Add region to wikilink
			end
			sub2Text = format("%s[[%s|%s]]", article or "", link, name)
		end
	end
	return {region = regionText, sub1 = sub1Text, sub2 = sub2Text, warnings = warnings}
end

return p