Module:Infobox road/route

This module pulls data from road data strings, such as Module:Road data/strings/USA, and passes it through three functions that draw the necessary route marker images and displays the route name in {{Infobox road}}.
Output examples
local p = {} 

local format = mw.ustring.format
require('strict')
local getArgs = require('Module:Arguments').getArgs	
local parserModule = require 'Module:Road data/parser'
local parser = parserModule.parser

local function banner(args, style)
	if args.marker_image then return nil end
	
	local bannerSize
		if style == 'small' then
			bannerSize = "40px"
		else
			bannerSize = "70px"
		end
	
	local shield = parser(args, 'banner')
	local alt = parser(args, 'banner')

	if not shield or shield == '' then
		return nil
	else
		return string.format('[[File:%s|%s|alt=%s]]', shield, bannerSize, alt)
	end
end



local function shield(args, style)

	if args.marker_image then return args.marker_image end
	
	local horizontalSize
	local verticalSize
		if style == 'small' then
			horizontalSize = "90x40px"
			verticalSize = "40x90px"
		else
			horizontalSize = "150x70px"
			verticalSize = "70x150px"
		end

	local shield = parser(args, 'shieldmain') or parser(args, 'shield') or ''
	
	local label = parser(args, 'name') or parser(args, 'abbr') or ''
	local alt = label .. ' marker'
	local orientation = parser(args, 'orientation')
	
	local function simpleSize(args)
		if orientation and orientation == 'upright' then
			return verticalSize
		else
			return horizontalSize
		end
	end
	
	local function shield_size(image_name, orientation)
		local image = 'File:' .. image_name
		local title = mw.title.new(image)

		local width = title.file.width
		local height = title.file.height
		
		if (orientation and orientation == 'upright') or height > width then
			return verticalSize
		else
			return horizontalSize
		end
	end
	
	
	
	if not shield or shield == '' then
		return nil
	elseif type(shield) == 'table' then
		local res = {}
		local sizes = {}
		for i,v in ipairs(shield) do
			sizes[i] = v
			res[i] = string.format('[[File:%s|%s|alt=%s]]', v, shield_size(v), alt)
		end
    	return table.concat(res, ' ')
	else
		return string.format('[[File:%s|%s|alt=%s]]', shield, simpleSize(args), alt)
	end
end

-- Links/abbreviations
local function name(args)
	local name = args.name or parser(args, 'name') or parser(args, 'abbr')
	return name
end

function p._routeInfo(args)
	
	local style = args.style
	local banner = banner(args, style)
	local shield = shield(args, style)
	local name = name(args)

	if not args.type and not args.route and not args.name and not args.marker_image then
		local container = nil
	else local container = mw.html.create('div'):cssText('text-align:center;')
		if shield == nil or args.marker_image == 'none' or args.name and not args.marker_image and not args.type and not args.route then 
			container:tag('p'):cssText('margin:0.1em;'):wikitext(name)
		elseif args.marker_image ~= '' and args.name == '' or args.name == nil and not args.type and not args.route then
			container:tag('p'):cssText('margin:0.1em;'):wikitext(shield)
		elseif args.country == 'AUS' then
			container:tag('p'):cssText('margin:0.1em;'):wikitext(name)
			container:tag('p'):cssText('margin:0.1em 0 0 0;'):wikitext(shield)
		else
			container:tag('p'):cssText('margin:0.1em 0 0 0;'):wikitext(banner)
			container:tag('p'):cssText('margin:0 0 0.1em;'):wikitext(shield)
			container:tag('p'):cssText('margin:0.1em;'):wikitext(name)
		end
		return tostring(container)
	end
end

function p.routeInfo(frame)
	local args = getArgs(frame)
	return p._routeInfo(args);
end

function p._shields(args)
	
	local style = args.style
	local banner = banner(args, style)
	local shield = shield(args, style)

	if not args.type and not args.route and not args.name and not args.marker_image then
		local container = nil
	else local container = mw.html.create('div'):cssText('text-align:center; display: inline-block; vertical-align: baseline; line-height: 0;')
		container:tag('p'):cssText('margin:0.1em 0 0 0;'):wikitext(banner)
		container:tag('p'):cssText('margin:0 0 0.1em;'):wikitext(shield)
	return tostring(container)
	end
end

function p.shields(frame)
	local args = getArgs(frame)
	return p._shields(args);
end

return p