Module:Sandbox/Hike395/Locmap Explained

require('strict')

local p =

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

local function round(n, decimals) local pow = 10^(decimals or 0) return math.floor(n * pow + 0.5) / powend

function p.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(string.format('%q is not a valid name for a location map definition', map), 2) elseif moduletitle.exists then local mapData = mw.loadData('Module:Location map/data/' .. map) return function(name, params) if name

nil then return 'Module:Location map/data/' .. map elseif mapData[name]

nil then return elseif params 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 = if type(frame) ~= 'table' or type(frame.expandTemplate) ~= 'function' then error('A frame must be provided when using a legacy location map') end return function(name, params) if params then return frame:expandTemplate else if name

nil then return 'Template:Location map ' .. map elseif cache[name]

nil then cache[name] = frame:expandTemplate 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) endend

function p.data(frame, args, map) if not args then args = getArgs(frame,) end if not map then map = p.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 ~= 0 and params)end

local hemisphereMultipliers =

local function decdeg(degrees, minutes, seconds, hemisphere, decimal, direction) if decimal then if degrees then error('Decimal and DMS degrees cannot both be provided for ' .. direction, 2) elseif minutes then error('Minutes can only be provided with DMS degrees for ' .. direction, 2) elseif seconds then error('Seconds can only be provided with DMS degrees for ' .. direction, 2) elseif hemisphere then error('A hemisphere can only be provided with DMS degrees 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) elseif seconds and not minutes then error('Seconds were provided for ' .. direction .. ' without minutes also being provided', 2) elseif not degrees then if minutes then error('Minutes were provided for ' .. direction .. ' without degrees also being provided', 2) elseif hemisphere then error('A hemisphere was provided for ' .. direction .. ' without degrees also being provided', 2) end return nil end decimal = tonumber(degrees) if not decimal then error('The degree value "' .. degrees .. '" provided for ' .. direction .. ' is not valid', 2) elseif minutes and not tonumber(minutes) then error('The minute value "' .. minutes .. '" provided for ' .. direction .. ' is not valid', 2) elseif 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 return decimalend

-- Finds a parameter in a transclusion of .local function coord2text(para,coord) local result = mw.text.split(mw.ustring.match(coord,'[%.%d]+°[NS] [%.%d]+°[EW]') or , '[°]') if para

'longitude' then result = end if not tonumber(result[1]) or not result[2] then return error('Malformed coordinates value', 2) end return tonumber(result[1]) * hemisphereMultipliers[para][result[2]]end

-- effectively make removeBlanks false for caption and maplink, and true for everything else-- if useWikidata is present but blank, convert it to false instead of nil-- p.top, p.bottom, and their callers need to use thisfunction p.valueFunc(key, value) if value then value = mw.text.trim(value) end if value ~= or key

'caption' or key

'maplink' then return value elseif key

'useWikidata' then return false endend

local function getContainerImage(args, map) if args.AlternativeMap then return args.AlternativeMap elseif args.relief and map('image1') ~= then return map('image1') else return map('image') endend

function p.top(frame, args, map) if not args then args = getArgs(frame,) end if not map then map = p.getMapParams(args[1], frame) end local width if not args.width then width = round((args.default_width or 240) * (tonumber(map('defaultscale')) or 1)) elseif mw.ustring.sub(args.width, -2)

'px' then width = mw.ustring.sub(args.width, 1, -3) else width = args.width end local retval = args.float

'center' and '

' or if args.caption and args.caption ~= and args.border ~= 'infobox' then retval = retval .. '

' or '">') else retval = retval .. '

' end local image = getContainerImage(args, map) retval = string.format('%s', retval, image, width, args.alt or ((args.label or mw.title.getCurrentTitle.text) .. ' is located in ' .. map('name')), args.maplink and ('|link=' .. args.maplink) or ) if args.overlay_image then return retval .. '

' else return retval endend

function p.bottom(frame, args, map) if not args then args = getArgs(frame,) end if not map then map = p.getMapParams(args[1], frame) end local retval = '

' if not args.caption or args.border

'infobox' then if args.border then retval = retval .. '

' else retval = retval .. '

' end retval = retval .. (args.caption or (args.label or mw.title.getCurrentTitle.text) .. ' (' .. map('name') .. ')') .. '

' elseif args.caption ~= then -- This is not the pipe trick. We're creating a link with no text on purpose, so that CSS can give us a nice image retval = retval .. '

' .. args.caption .. '

' end

if args.switcherLabel then retval = retval .. '

' elseif args.autoSwitcherLabel then retval = retval .. '' end retval = retval .. '

' if args.caption_undefined then mw.log('Removed parameter caption_undefined used.') local parent = frame:getParent if parent then mw.log('Parent is ' .. parent:getTitle) end mw.logObject(args, 'args') retval = retval .. '' end if map('skew') ~= or map('lat_skew') ~= or map('crosses180') ~= or map('type') ~= then mw.log('Removed parameter used in map definition ' .. map) retval = retval .. '' end if string.find(map('name'), '|', 1, true) then mw.log('Pipe used in name of map definition ' .. map) retval = retval .. '' end if args.float

'center' then retval = retval .. '

' end return retvalend

local function markOuterDiv(x, y, imageDiv, labelDiv) return mw.html.create('div') :cssText('position:absolute;top:' .. round(y, 3) .. '%;left:' .. round(x, 3) .. '%') :node(imageDiv) :node(labelDiv)end

local function markImageDiv(mark, marksize, label, link, alt, title) local builder = mw.html.create('div') :cssText('position:absolute;left:-' .. round(marksize / 2) .. 'px;top:-' .. round(marksize / 2) .. 'px;line-height:0') :attr('title', title) if marksize ~= 0 then builder:wikitext(string.format('', mark, marksize, marksize, label, link, alt and ('|alt=' .. alt) or )) end return builderend

local function markLabelDiv(label, label_size, label_width, position, background, x, marksize) if tonumber(label_size)

0 then return mw.html.create('div'):cssText('font-size:0%;position:absolute'):wikitext(label) end local builder = mw.html.create('div') :cssText('font-size:' .. label_size .. '%;line-height:110%;position:absolute;width:' .. label_width .. 'em') local distance = round(marksize / 2 + 1) local spanCss if position

'top' then -- specified top builder:cssText('bottom:' .. distance .. 'px;left:' .. (-label_width / 2) .. 'em;text-align:center') elseif position

'bottom' then -- specified bottom builder:cssText('top:' .. distance .. 'px;left:' .. (-label_width / 2) .. 'em;text-align:center') elseif position

'left' or (tonumber(x) > 70 and position ~= 'right') then -- specified left or autodetected to left builder:cssText('top:-0.75em;right:' .. distance .. 'px;text-align:right') spanCss = 'float:right' else -- specified right or autodetected to right builder:cssText('top:-0.75em;left:' .. distance .. 'px;text-align:left') spanCss = 'float:left' end builder = builder:tag('span') :cssText('padding:1px') :cssText(spanCss) :wikitext(label) if background then builder:cssText('background-color:' .. background) end return builder:doneend

local function getX(longitude, left, right) local width = (right - left) % 360 if width

0 then width = 360 end local distanceFromLeft = (longitude - left) % 360 -- the distance needed past the map to the right equals distanceFromLeft - width. the distance needed past the map to the left equals 360 - distanceFromLeft. to minimize page stretching, go whichever way is shorter if distanceFromLeft - width / 2 >= 180 then distanceFromLeft = distanceFromLeft - 360 end return 100 * distanceFromLeft / widthend

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

function p.mark(frame, args, map) if not args then args = getArgs(frame,) end if not map then map = p.getMapParams(args[1], frame) end local x, y, longitude, latitude longitude = decdeg(args.lon_deg, args.lon_min, args.lon_sec, args.lon_dir, args.long, 'longitude') latitude = decdeg(args.lat_deg, args.lat_min, args.lat_sec, args.lat_dir, args.lat, 'latitude') if args.coordinates then-- Temporarily removed to facilitate infobox conversion. See

-- if longitude or latitude then-- error('Coordinates from and individual coordinates cannot both be provided')-- end longitude = coord2text('longitude', args.coordinates) latitude = coord2text('latitude', args.coordinates) elseif not longitude and not latitude and args.useWikidata then -- If they didn't provide either coordinate, try Wikidata. If they provided one but not the other, don't. local entity = mw.wikibase.getEntity if entity and entity.claims and entity.claims.P625 and entity.claims.P625[1].mainsnak.snaktype

'value' then local value = entity.claims.P625[1].mainsnak.datavalue.value longitude, latitude = value.longitude, value.latitude end end if not longitude then error('No value was provided for longitude') elseif not latitude then error('No value was provided for latitude') end local builder = mw.html.create if (not args.lon_deg) ~= (not args.lat_deg) then builder:wikitext('') elseif (not args.lon_min) ~= (not args.lat_min) then builder:wikitext('') elseif (not args.lon_sec) ~= (not args.lat_sec) then builder:wikitext('') elseif (not args.lon_dir) ~= (not args.lat_dir) then builder:wikitext('') elseif (not args.long) ~= (not args.lat) then builder:wikitext('') end if args.skew or args.lon_shift or args.markhigh then mw.log('Removed parameter used in invocation.') local parent = frame:getParent if parent then mw.log('Parent is ' .. parent:getTitle) end mw.logObject(args, 'args') builder:wikitext('') end if map('x') ~= then x = tonumber(mw.ext.ParserFunctions.expr(map('x',))) else x = tonumber(getX(longitude, map('left'), map('right'))) end if map('y') ~= then y = tonumber(mw.ext.ParserFunctions.expr(map('y',))) else y = tonumber(getY(latitude, map('top'), map('bottom'))) end if (x < 0 or x > 100 or y < 0 or y > 100) and not args.outside then mw.log('Mark placed outside map boundaries without outside flag set. x = ' .. x .. ', y = ' .. y) local parent = frame:getParent if parent then mw.log('Parent is ' .. parent:getTitle) end mw.logObject(args, 'args') builder:wikitext('') end local mark = args.mark or map('mark') if mark

then mark = 'Red pog.svg' end local marksize = tonumber(args.marksize) or tonumber(map('marksize')) or 8 local imageDiv = markImageDiv(mark, marksize, args.label or mw.title.getCurrentTitle.text, args.link or , args.alt, args[2]) local labelDiv if args.label and args.position ~= 'none' then labelDiv = markLabelDiv(args.label, args.label_size or 90, args.label_width or 6, args.position, args.background, x, marksize) end return builder:node(markOuterDiv(x, y, imageDiv, labelDiv))end

local function switcherSeparate(s) if s

nil then return end local retval = for i in string.gmatch(s .. '#', '([^#])#') do i = mw.text.trim(i) retval[#retval + 1] = (i ~= and i) end return retvalend*

function p.main(frame, args, map) if not args then args = getArgs(frame,) end if args.useWikidata

nil then args.useWikidata = true end if not map then if args[1] then map = for mapname in string.gmatch(args[1], '[^#]+') do map[#map + 1] = p.getMapParams(mapname, frame) end if #map

1 then map = map[1] end else map = p.getMapParams('World', frame) end end if type(map)

'table' then local altmaps = switcherSeparate(args.AlternativeMap) if #altmaps > #map then error(string.format('%d AlternativeMaps were provided, but only %d maps were provided', #altmaps, #map)) end local overlays = switcherSeparate(args.overlay_image) if #overlays > #map then error(string.format('%d overlay_images were provided, but only %d maps were provided', #overlays, #map)) end local outputs = args.autoSwitcherLabel = true for k,v in ipairs(map) do args.AlternativeMap = altmaps[k] args.overlay_image = overlays[k] outputs[k] = p.main(frame, args, v) end return '

' .. table.concat(outputs) .. '

' else return p.top(frame, args, map) .. tostring(p.mark(frame, args, map)) .. p.bottom(frame, args, map) endend

return p