Module:Location map

local p = {}

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

local function round(n, digits) local mult = math.pow(10, digits) return math.floor(n * mult + 0.5) / mult end

local function getMapParams(map, frame) if not map then error('The name of the location map definition to use must be specified', 2) end local moduletitle = mw.title.new('Module:Location map/data/' .. map) if not moduletitle then error('"' .. map .. '" is not a valid name for a location map definition', 2) elseif moduletitle.exists then local mapData = mw.loadData('Module:Location map/data/' .. map) return function(name, params) if mapData[name] == nil then return '' elseif params and params[1] then return mw.message.newRawMessage(tostring(mapData[name]), unpack(params)):plain else return mapData[name] end end elseif mw.title.new('Template:Location map ' .. map).exists then local cache = {} return function(name, params) if params then return frame:expandTemplate{title = 'Location map ' .. map, args = { name, unpack(params) }} else if cache[name] == nil then cache[name] = frame:expandTemplate{title = 'Location map ' .. map, args = { name }} end return cache[name] end end else error('Unable to find the specified location map definition. Neither "Module:Location map/data/' .. map .. '" nor "Template:Location map ' .. map .. '" exists', 2) end end

function p.data(frame, args, map) if not args then args = getArgs(frame) end if not map then map = getMapParams(args[1], frame) end local params = {} for k,v in ipairs(args) do		if k > 2 then params[k-2] = v		end end return map(args[2], params) end

local hemisphereMultipliers = { longitude = { W = -1, w = -1, E = 1, e = 1 }, latitude = { S = -1, s = -1, N = 1, n = 1 } }

local function decdeg(degrees, minutes, seconds, hemisphere, digits, decimal, direction) if not degrees then if not decimal then error('No value was provided for ' .. direction, 2) end local retval = tonumber(decimal) if retval then return retval end error('The value "' .. decimal .. '" provided for ' .. direction .. ' is not valid', 2) end decimal = tonumber(degrees) if not decimal then error('The degree value "' .. degrees .. '" provided for ' .. direction .. ' is not valid', 2) end if minutes and not tonumber(minutes) then error('The minute value "' .. minutes .. '" provided for ' .. direction .. ' is not valid', 2) end if seconds and not tonumber(seconds) then error('The second value "' .. seconds .. '" provided for ' .. direction .. ' is not valid', 2) end decimal = decimal + (minutes or 0)/60 + (seconds or 0)/3600 if hemisphere then local multiplier = hemisphereMultipliers[direction][hemisphere] if not multiplier then error('The hemisphere "' .. hemisphere .. '" provided for ' .. direction .. ' is not valid', 2) end decimal = decimal * multiplier end if not digits then digits = 7 elseif not tonumber(digits) then error('The value "' .. digits .. '" provided for number of digits in ' .. direction .. ' is not valid', 2) end return round(decimal, digits) end

function p.top(frame, args, map) if not args then args = getArgs(frame) end if not map then map = getMapParams(args[1], frame) end local width if args.width then width = mw.ustring.gsub(args.width, 'px', '') else width = round((args.default_width or 240) * (tonumber(map('defaultscale')) or 1), 0) end local retval = '' if args.float == 'center' then retval = retval .. ' '	end if args.caption then retval = retval .. '' else retval = retval .. ' ' end local image if args.AlternativeMap then image = args.AlternativeMap elseif args.relief and map('image1') ~= '' then image = map('image1') else image = map('image') end retval = retval .. ''	if args.overlay_image then retval = retval .. ' '	end return retval end

function p.bottom(frame, args, map) if not args then args = getArgs(frame) end if not map then map = getMapParams(args[1], frame) end local retval = '' retval = retval .. ' '	local caption = frame.args.caption or frame:getParent.args.caption if caption and not args.caption_undefined then retval = retval .. mw.text.trim(caption) else retval = retval .. (args.label or mw.title.getCurrentTitle.text) .. ' (' .. map('name') .. ')' end retval = retval .. '  '	if args.float == 'center' then retval = retval .. ' '	end return retval end

function p.container(frame, args, map) if not args then args = getArgs(frame) end if not map then map = getMapParams(args[1], frame) end return p.top(frame, args, map) .. (args.places or '') .. p.bottom(frame, args, map) end

local function markOuterDiv(x, y, content) return ' ' .. content .. ' ' end

local function markImageDiv(mark, marksize, label, link, alt, title) local retval = ''	if marksize ~= 0 then retval = retval .. ''	end return retval .. ' ' end

local function markLabelDiv(label, label_size, label_width, position, background, x) local retval = ' 70 and position ~= 'right') then -- specified left or autodetected to left		retval = retval .. 'left:-6.5em;text-align:right'	else -- specified right or autodetected to right		retval = retval .. 'left:0.5em;text-align:left'	end	retval = retval .. '">' .. label .. ' ' end

local function getX(longitude, latitude, lon_dir, left, right, top, bottom, crosses180, skew, lon_shift) local crosses180_correction = crosses180 and lon_dir == 'W' and (-36000/(left - right)) or 0 if skew then local lat_ratio = (top - latitude)/(top - bottom) local skew_factor = (1 - skew) * lat_ratio + skew longitude = (longitude - 0.5 * (right + left) + lon_shift) * skew_factor + 0.5 * (right + left) - lon_shift end return round(crosses180_correction + 100 * (longitude - left) / (right - left), 1) end

local function getY(latitude, top, bottom) return round(100 * (top - latitude) / (top - bottom), 1) end

function p.mark(frame, args, map) if not args then args = getArgs(frame) end if not map then map = getMapParams(args[1], frame) end local x, y, longitude, latitude longitude = decdeg(args.lon_deg, args.lon_min, args.lon_sec, args.lon_dir, nil, args.long, 'longitude') latitude = decdeg(args.lat_deg, args.lat_min, args.lat_sec, args.lat_dir, nil, args.lat, 'latitude') if map('x') ~= '' then x = frame:callParserFunction('#expr', map('x', { latitude, longitude })) else x = getX(longitude, latitude, args.lon_dir, map('left'), map('right'), map('top'), map('bottom'), map('crosses180') ~= '', tonumber(args.skew or map('skew')), args.lon_shift or 0) end if map('y') ~= '' then y = frame:callParserFunction('#expr', map('y', { latitude, longitude })) else y = getY(latitude, map('top'), map('bottom')) end local mark = args.mark or map('mark') if mark == '' then mark = 'Red pog.svg' end local divContent = markImageDiv(mark, tonumber(args.marksize) or tonumber(map('marksize')) or 8, args.label or mw.title.getCurrentTitle.text, args.link or '', args.alt, args[2]) if args.label and args.position ~= 'none' then divContent = divContent .. markLabelDiv(args.label, args.label_size or 90, args.label_width or 6, args.position, args.background, x)	end return markOuterDiv(x, y, divContent) end

function p.main(frame, args, map) if not args then args = getArgs(frame) end if not args[1] then args[1] = 'World' end if not map then map = getMapParams(args[1], frame) end return p.top(frame, args, map) .. p.mark(frame, args, map) .. p.bottom(frame, args, map) end

local function manyMakeArgs(fullArgs, n)	if n == 1 then return { fullArgs[1], lat = fullArgs.lat1 or fullArgs.lat, long = fullArgs.long1 or fullArgs.long, lat_deg = fullArgs.lat1_deg or fullArgs.lat_deg, lat_min = fullArgs.lat1_min or fullArgs.lat_min, lat_sec = fullArgs.lat1_sec or fullArgs.lat_sec, lat_dir = fullArgs.lat1_dir or fullArgs.lat_dir, lon_deg = fullArgs.lon1_deg or fullArgs.lon_deg, lon_min = fullArgs.lon1_min or fullArgs.lon_min, lon_sec = fullArgs.lon1_sec or fullArgs.lon_sec, lon_dir = fullArgs.lon1_dir or fullArgs.lon_dir, mark = fullArgs.mark1 or fullArgs.mark, marksize = fullArgs.mark1size or fullArgs.marksize, link = fullArgs.link1 or fullArgs.link, label = fullArgs.label1 or fullArgs.label, label_size = fullArgs.label1_size or fullArgs.label_size, position = fullArgs.position1 or fullArgs.pos1 or fullArgs.position or fullArgs.pos, background = fullArgs.background1 or fullArgs.bg1 or fullArgs.background or fullArgs.bg		} else return { fullArgs[1], lat = fullArgs['lat' .. n], long = fullArgs['long' .. n], lat_deg = fullArgs['lat' .. n .. '_deg'], lat_min = fullArgs['lat' .. n .. '_min'], lat_sec = fullArgs['lat' .. n .. '_sec'], lat_dir = fullArgs['lat' .. n .. '_dir'], lon_deg = fullArgs['lon' .. n .. '_deg'], lon_min = fullArgs['lon' .. n .. '_min'], lon_sec = fullArgs['lon' .. n .. '_sec'], lon_dir = fullArgs['lon' .. n .. '_dir'], mark = fullArgs['mark' .. n], marksize = fullArgs['mark' .. n .. 'size'], link = fullArgs['link' .. n], label = fullArgs['label' .. n], label_size = fullArgs['label' .. n .. '_size'], position = fullArgs['position' .. n] or fullArgs['pos' .. n], background = fullArgs['background' .. n] or fullArgs['bg' .. n]		} end end

function p.many(frame, args, map) if not args then args = getArgs(frame) end if not args[1] then args[1] = 'World' end if not map then map = getMapParams(args[1], frame) end local marks = {} local markhigh = args.markhigh for k, v in pairs(args) do -- @todo change to uargs once we have that if v then if string.sub(k, -4) == '_deg' then k = string.sub(k, 1, -5) end if string.sub(k, 1, 3) == 'lat' then k = tonumber(string.sub(k, 4)) if k then table.insert(marks, k)				end end end end table.sort(marks) if marks[1] ~= 1 and (args.lat or args.lat_deg) then table.insert(marks, 1, 1) end local body = '' for _, v in ipairs(marks) do -- don't try to consolidate this into the above loop. ordering of elements from pairs is unspecified body = body .. p.mark(frame, manyMakeArgs(args, v), map) if args['mark' .. v .. 'high'] then markhigh = true end end args.label = nil -- there is no global label return p.top(frame, args, map) .. body .. p.bottom(frame, args, map) .. (markhigh and  or ) end

return p