--[[ This module is intended to replace the functionality of {{Coord}} and related templates. It provides several methods, including  {{#invoke:Coordinates | coord }} : General function formatting and displaying coordinate values.  {{#invoke:Coordinates | dec2dms }} : Simple function for converting decimal degree values to DMS format.  {{#invoke:Coordinates | dms2dec }} : Simple function for converting DMS format to decimal degree format.  {{#invoke:Coordinates | link }} : Export the link used to reach the tools  ]]  require('มอดูล:No globals')  local math_mod = require("มอดูล:Math") local coordinates = {};  local current_page = mw.title.getCurrentTitle() local page_name = mw.uri.encode( current_page.prefixedText, 'WIKI' ); local coord_link = '//tools.wmflabs.org/geohack/geohack.php?pagename=' .. page_name .. '&params='  --[[ Helper function, replacement for {{coord/display/title}} ]] local function displaytitle(s, notes)  local l = "[[พิกัดภูมิศาสตร์]]: " .. s  local co = '<span id="coordinates">' .. l .. notes .. '</span>';  return '<span style="font-size: small;">' .. co .. '</span>'; end  --[[ Helper function, Replacement for {{coord/display/inline}} ]] local function displayinline(s, notes)  return s .. notes end  --[[ Helper function, used in detecting DMS formatting ]] local function dmsTest(first, second)  if type(first) ~= 'string' or type(second) ~= 'string' then  return nil  end  local s = (first .. second):upper()  return s:find('^[NS][EW]$') or s:find('^[EW][NS]$') end   --[[ Wrapper function to grab args, see Module:Arguments for this function's documentation. ]] local function makeInvokeFunc(funcName)  return function (frame)  local args = require('มอดูล:Arguments').getArgs(frame, {  wrappers = 'แม่แบบ:Coord'  })  return coordinates[funcName](args, frame)  end end  --[[ Helper function, handle optional args. ]] local function optionalArg(arg, supplement)  return arg and arg .. supplement or '' end  --[[ Formats any error messages generated for display ]] local function errorPrinter(errors)  local result = ""  for i,v in ipairs(errors) do  local errorHTML = '<strong class="error">Coordinates: ' .. v[2] .. '</strong>'  result = result .. errorHTML .. "<br />"  end  return result end  --[[ Determine the required CSS class to display coordinates  Usually geo-nondefault is hidden by CSS, unless a user has overridden this for himself default is the mode as specificied by the user when calling the {{coord}} template mode is the display mode (dec or dms) that we will need to determine the css class for ]] local function displayDefault(default, mode)  if default == "" then  default = "dec"  end   if default == mode then  return "geo-default"  else  return "geo-nondefault"  end end  --[[ specPrinter  Output formatter. Takes the structure generated by either parseDec or parseDMS and formats it for inclusion on Wikipedia. ]] local function specPrinter(args, coordinateSpec)  local uriComponents = coordinateSpec["param"]  if uriComponents == "" then  -- RETURN error, should never be empty or nil  return "ERROR param was empty"  end  if args["name"] then  uriComponents = uriComponents .. "&title=" .. mw.uri.encode(coordinateSpec["name"])  end   local geodmshtml = '<span class="geo-dms" title="แผนที่ ภาพถ่ายทางอากาศ และข้อมูลอื่นเกี่ยวกับสถานที่นี้">'  .. '<span class="latitude">' .. coordinateSpec["dms-lat"] .. '</span> '  .. '<span class="longitude">' ..coordinateSpec["dms-long"] .. '</span>'  .. '</span>'   local lat = tonumber( coordinateSpec["dec-lat"] ) or 0  local geodeclat  if lat < 0 then  -- FIXME this breaks the pre-existing precision  geodeclat = tostring(coordinateSpec["dec-lat"]):sub(2) .. "°S"  else  geodeclat = (coordinateSpec["dec-lat"] or 0) .. "°N"  end   local long = tonumber( coordinateSpec["dec-long"] ) or 0  local geodeclong  if long < 0 then  -- FIXME does not handle unicode minus  geodeclong = tostring(coordinateSpec["dec-long"]):sub(2) .. "°W"  else  geodeclong = (coordinateSpec["dec-long"] or 0) .. "°E"  end   local geodechtml = '<span class="geo-dec" title="แผนที่ ภาพถ่ายทางอากาศ และข้อมูลอื่นเกี่ยวกับสถานที่นี้">'  .. geodeclat .. ' '  .. geodeclong  .. '</span>'   local geonumhtml = '<span class="geo">'  .. coordinateSpec["dec-lat"] .. '; '  .. coordinateSpec["dec-long"]  .. '</span>'   local inner = '<span class="' .. displayDefault(coordinateSpec["default"], "dms" ) .. '">' .. geodmshtml .. '</span>'  .. '<span class="geo-multi-punct">&#xfeff; / &#xfeff;</span>'  .. '<span class="' .. displayDefault(coordinateSpec["default"], "dec" ) .. '">';   if not args["name"] then  inner = inner .. geodechtml  .. '<span style="display:none">&#xfeff; / ' .. geonumhtml .. '</span></span>'  else  inner = inner .. '<span class="vcard">' .. geodechtml  .. '<span style="display:none">&#xfeff; / ' .. geonumhtml .. '</span>'  .. '<span style="display:none">&#xfeff; (<span class="fn org">'  .. args["name"] .. '</span>)</span></span></span>'  end   return '<span class="plainlinks nourlexpansion">' ..  '[' .. coord_link .. uriComponents .. ' ' .. inner .. ']' .. '</span>' end  --[[ Helper function, convert decimal to degrees ]] local function convert_dec2dms_d(coordinate)  local d = math_mod._round( coordinate, 0 ) .. "°"  return d .. "" end  --[[ Helper function, convert decimal to degrees and minutes ]] local function convert_dec2dms_dm(coordinate)  coordinate = math_mod._round( coordinate * 60, 0 );  local m = coordinate % 60;  coordinate = math.floor( (coordinate - m) / 60 );  local d = coordinate % 360 .."°"   return d .. string.format( "%02d′", m ) end  --[[ Helper function, convert decimal to degrees, minutes, and seconds ]] local function convert_dec2dms_dms(coordinate)  coordinate = math_mod._round( coordinate * 60 * 60, 0 );  local s = coordinate % 60  coordinate = math.floor( (coordinate - s) / 60 );  local m = coordinate % 60  coordinate = math.floor( (coordinate - m) / 60 );  local d = coordinate % 360 .."°"   return d .. string.format( "%02d′", m ) .. string.format( "%02d″", s ) end  --[[ Helper function, convert decimal latitude or longitude to degrees, minutes, and seconds format based on the specified precision.  ]] local function convert_dec2dms(coordinate, firstPostfix, secondPostfix, precision)  local coord = tonumber(coordinate)  local postfix  if coord >= 0 then  postfix = firstPostfix  else  postfix = secondPostfix  end   precision = precision:lower();  if precision == "dms" then  return convert_dec2dms_dms( math.abs( coord ) ) .. postfix;  elseif precision == "dm" then  return convert_dec2dms_dm( math.abs( coord ) ) .. postfix;  elseif precision == "d" then  return convert_dec2dms_d( math.abs( coord ) ) .. postfix;  end end  --[[ Convert DMS format into a N or E decimal coordinate ]] local function convert_dms2dec(direction, degrees_str, minutes_str, seconds_str)  local degrees = tonumber(degrees_str)  local minutes = tonumber(minutes_str) or 0  local seconds = tonumber(seconds_str) or 0   local factor = 1  if direction == "S" or direction == "W" then  factor = -1  end   local precision = 0  if seconds_str then  precision = 5 + math.max( math_mod._precision(seconds_str), 0 );  elseif minutes_str and minutes_str ~= '' then  precision = 3 + math.max( math_mod._precision(minutes_str), 0 );  else  precision = math.max( math_mod._precision(degrees_str), 0 );  end   local decimal = factor * (degrees+(minutes+seconds/60)/60)  return string.format( "%." .. precision .. "f", decimal ) -- not tonumber since this whole thing is string based. end  --[[ Checks input values to for out of range errors. ]] local function validate( lat_d, lat_m, lat_s, long_d, long_m, long_s, source, strong )  local errors = {};  lat_d = tonumber( lat_d ) or 0;  lat_m = tonumber( lat_m ) or 0;  lat_s = tonumber( lat_s ) or 0;  long_d = tonumber( long_d ) or 0;  long_m = tonumber( long_m ) or 0;  long_s = tonumber( long_s ) or 0;   if strong then  if lat_d < 0 then  table.insert(errors, {source, "latitude degrees < 0 with hemisphere flag"})  end  if long_d < 0 then  table.insert(errors, {source, "longitude degrees < 0 with hemisphere flag"})  end  --[[  #coordinates is inconsistent about whether this is an error. If globe: is  specified, it won't error on this condition, but otherwise it will.    For not simply disable this check.    if long_d > 180 then  table.insert(errors, {source, "longitude degrees > 180 with hemisphere flag"})  end  ]]  end   if lat_d > 90 then  table.insert(errors, {source, "latitude degrees > 90"})  end  if lat_d < -90 then  table.insert(errors, {source, "latitude degrees < -90"})  end  if lat_m >= 60 then  table.insert(errors, {source, "latitude minutes >= 60"})  end  if lat_m < 0 then  table.insert(errors, {source, "latitude minutes < 0"})  end  if lat_s >= 60 then  table.insert(errors, {source, "latitude seconds >= 60"})  end  if lat_s < 0 then  table.insert(errors, {source, "latitude seconds < 0"})  end  if long_d >= 360 then  table.insert(errors, {source, "longitude degrees >= 360"})  end  if long_d <= -360 then  table.insert(errors, {source, "longitude degrees <= -360"})  end  if long_m >= 60 then  table.insert(errors, {source, "longitude minutes >= 60"})  end  if long_m < 0 then  table.insert(errors, {source, "longitude minutes < 0"})  end  if long_s >= 60 then  table.insert(errors, {source, "longitude seconds >= 60"})  end  if long_s < 0 then  table.insert(errors, {source, "longitude seconds < 0"})  end   return errors; end  --[[ parseDec  Transforms decimal format latitude and longitude into the structure to be used in displaying coordinates ]] local function parseDec( lat, long, format )  local coordinateSpec = {}  local errors = {}   if not long then  return nil, {{"parseDec", "Missing longitude"}}  elseif not tonumber(long) then  return nil, {{"parseDec", "Longitude could not be parsed as a number: " .. long}}  end   errors = validate( lat, nil, nil, long, nil, nil, 'parseDec', false );  coordinateSpec["dec-lat"] = lat;  coordinateSpec["dec-long"] = long;   local mode = coordinates.determineMode( lat, long );  coordinateSpec["dms-lat"] = convert_dec2dms( lat, "N", "S", mode) -- {{coord/dec2dms|{{{1}}}|N|S|{{coord/prec dec|{{{1}}}|{{{2}}}}}}}  coordinateSpec["dms-long"] = convert_dec2dms( long, "E", "W", mode) -- {{coord/dec2dms|{{{2}}}|E|W|{{coord/prec dec|{{{1}}}|{{{2}}}}}}}    if format then  coordinateSpec.default = format  else  coordinateSpec.default = "dec"  end   return coordinateSpec, errors end  --[[ parseDMS  Transforms degrees, minutes, seconds format latitude and longitude into the a structure to be used in displaying coordinates ]] local function parseDMS( lat_d, lat_m, lat_s, lat_f, long_d, long_m, long_s, long_f, format )  local coordinateSpec, errors, backward = {}, {}   lat_f = lat_f:upper();  long_f = long_f:upper();   -- Check if specified backward  if lat_f == 'E' or lat_f == 'W' then  lat_d, long_d, lat_m, long_m, lat_s, long_s, lat_f, long_f, backward = long_d, lat_d, long_m, lat_m, long_s, lat_s, long_f, lat_f, true;  end   errors = validate( lat_d, lat_m, lat_s, long_d, long_m, long_s, 'parseDMS', true );  if not long_d then  return nil, {{"parseDMS", "Missing longitude" }}  elseif not tonumber(long_d) then  return nil, {{"parseDMS", "Longitude could not be parsed as a number:" .. long_d }}  end   if not lat_m and not lat_s and not long_m and not long_s and #errors == 0 then  if math_mod._precision( lat_d ) > 0 or math_mod._precision( long_d ) > 0 then  if lat_f:upper() == 'S' then  lat_d = '-' .. lat_d;  end  if long_f:upper() == 'W' then  long_d = '-' .. long_d;  end   return parseDec( lat_d, long_d, format );  end  end   coordinateSpec["dms-lat"] = lat_d.."°"..optionalArg(lat_m,"′") .. optionalArg(lat_s,"″") .. lat_f  coordinateSpec["dms-long"] = long_d.."°"..optionalArg(long_m,"′") .. optionalArg(long_s,"″") .. long_f  coordinateSpec["dec-lat"] = convert_dms2dec(lat_f, lat_d, lat_m, lat_s) -- {{coord/dms2dec|{{{4}}}|{{{1}}}|0{{{2}}}|0{{{3}}}}}  coordinateSpec["dec-long"] = convert_dms2dec(long_f, long_d, long_m, long_s) -- {{coord/dms2dec|{{{8}}}|{{{5}}}|0{{{6}}}|0{{{7}}}}}   if format then  coordinateSpec.default = format  else  coordinateSpec.default = "dms"  end   return coordinateSpec, errors, backward end  --[[ Check the input arguments for coord to determine the kind of data being provided and then make the necessary processing. ]] local function formatTest(args)  local result, errors  local backward, primary = false, false   local function getParam(args, lim)  local ret = {}  for i = 1, lim do  ret[i] = args[i] or ''  end  return table.concat(ret, '_')  end   if not args[1] then  -- no lat logic  return errorPrinter( {{"formatTest", "Missing latitude"}} )  elseif not tonumber(args[1]) then  -- bad lat logic  return errorPrinter( {{"formatTest", "Unable to parse latitude as a number:" .. args[1]}} )  elseif not args[4] and not args[5] and not args[6] then  -- dec logic  result, errors = parseDec(args[1], args[2], args.format)  if not result then  return errorPrinter(errors);  end  -- formatting for geohack: geohack expects D_N_D_E notation or D;D notation  -- wikiminiatlas doesn't support D;D notation  -- #coordinates parserfunction doesn't support negative decimals with NSWE  result.param = table.concat({  math.abs(tonumber(args[1])),  ((tonumber(args[1]) or 0) < 0) and 'S' or 'N',  math.abs(tonumber(args[2])),  ((tonumber(args[2]) or 0) < 0) and 'W' or 'E',  args[3] or ''}, '_')  elseif dmsTest(args[4], args[8]) then  -- dms logic  result, errors, backward = parseDMS(args[1], args[2], args[3], args[4],  args[5], args[6], args[7], args[8], args.format)  if args[10] then  table.insert(errors, {'formatTest', 'Extra unexpected parameters'})  end  if not result then  return errorPrinter(errors)  end  result.param = getParam(args, 9)  elseif dmsTest(args[3], args[6]) then  -- dm logic  result, errors, backward = parseDMS(args[1], args[2], nil, args[3],  args[4], args[5], nil, args[6], args['format'])  if args[8] then  table.insert(errors, {'formatTest', 'Extra unexpected parameters'})  end  if not result then  return errorPrinter(errors)  end  result.param = getParam(args, 7)  elseif dmsTest(args[2], args[4]) then  -- d logic  result, errors, backward = parseDMS(args[1], nil, nil, args[2],  args[3], nil, nil, args[4], args.format)  if args[6] then  table.insert(errors, {'formatTest', 'Extra unexpected parameters'})  end  if not result then  return errorPrinter(errors)  end  result.param = getParam(args, 5)  else  -- Error  return errorPrinter({{"formatTest", "Unknown argument format"}})  end  result.name = args.name   local extra_param = {'dim', 'globe', 'scale', 'region', 'source', 'type'}  for _, v in ipairs(extra_param) do  if args[v] then  table.insert(errors, {'formatTest', 'Parameter: "' .. v .. '=" should be "' .. v .. ':"' })  end  end   local ret = specPrinter(args, result)  if #errors > 0 then  ret = ret .. ' ' .. errorPrinter(errors) .. '[[หมวดหมู่:หน้าที่เรียกใช้แม่แบบพิกัดภูมิศาสตร์ไม่ถูกต้อง]]'  end  return ret, backward end  --[[ Generate Wikidata tracking categories. ]] local function makeWikidataCategories()  local ret  if mw.wikibase and current_page.namespace == 0 then  local entity = mw.wikibase.getEntityObject()  if entity and entity.claims and entity.claims.P625 and entity.claims.P625[1] then  local snaktype = entity.claims.P625[1].mainsnak.snaktype  if snaktype == 'value' then  -- coordinates exist both here and on Wikidata, and can be compared.  ret = 'Coordinates on Wikidata'  elseif snaktype == 'somevalue' then  ret = 'Coordinates on Wikidata set to unknown value'  elseif snaktype == 'novalue' then  ret = 'Coordinates on Wikidata set to no value'  end  else  -- We have to either import the coordinates to Wikidata or remove them here.  ret = 'Coordinates not on Wikidata'  end  end  if ret then  return string.format('[[Category:%s]]', ret)  else  return ''  end end  --[[ link  Simple function to export the coordinates link for other uses.  Usage:  {{#invoke:Coordinates | link }}   ]] function coordinates.link(frame)  return coord_link; end  --[[ dec2dms  Wrapper to allow templates to call dec2dms directly.  Usage:  {{#invoke:Coordinates | dec2dms | decimal_coordinate | positive_suffix |  negative_suffix | precision }}   decimal_coordinate is converted to DMS format. If positive, the positive_suffix is appended (typical N or E), if negative, the negative suffix is appended. The specified precision is one of 'D', 'DM', or 'DMS' to specify the level of detail to use. ]] coordinates.dec2dms = makeInvokeFunc('_dec2dms') function coordinates._dec2dms(args)  local coordinate = args[1]  local firstPostfix = args[2] or ''  local secondPostfix = args[3] or ''  local precision = args[4] or ''   return convert_dec2dms(coordinate, firstPostfix, secondPostfix, precision) end  --[[ Helper function to determine whether to use D, DM, or DMS format depending on the precision of the decimal input. ]] function coordinates.determineMode( value1, value2 )  local precision = math.max( math_mod._precision( value1 ), math_mod._precision( value2 ) );  if precision <= 0 then  return 'd'  elseif precision <= 2 then  return 'dm';  else  return 'dms';  end end  --[[ dms2dec  Wrapper to allow templates to call dms2dec directly.  Usage:  {{#invoke:Coordinates | dms2dec | direction_flag | degrees |  minutes | seconds }}   Converts DMS values specified as degrees, minutes, seconds too decimal format. direction_flag is one of N, S, E, W, and determines whether the output is positive (i.e. N and E) or negative (i.e. S and W). ]] coordinates.dms2dec = makeInvokeFunc('_dms2dec') function coordinates._dms2dec(args)  local direction = args[1]  local degrees = args[2]  local minutes = args[3]  local seconds = args[4]   return convert_dms2dec(direction, degrees, minutes, seconds) end  --[[ coord  Main entry point for Lua function to replace {{coord}}  Usage:  {{#invoke:Coordinates | coord }}  {{#invoke:Coordinates | coord | lat | long }}  {{#invoke:Coordinates | coord | lat | lat_flag | long | long_flag }}  ...    Refer to {{coord}} documentation page for many additional parameters and  configuration options.   Note: This function provides the visual display elements of {{coord}}. In order to load coordinates into the database, the {{#coordinates:}} parser function must also be called, this is done automatically in the Lua version of {{coord}}. ]] coordinates.coord = makeInvokeFunc('_coord') function coordinates._coord(args)  if (not args[1] or not tonumber(args[1])) and not args[2] and mw.wikibase.getEntityObject() then  args[3] = args[1]; args[1] = nil  local entity = mw.wikibase.getEntityObject()  if entity  and entity.claims  and entity.claims.P625  and entity.claims.P625[1].mainsnak.snaktype == 'value'  then  local precision = entity.claims.P625[1].mainsnak.datavalue.value.precision  args[1]=entity.claims.P625[1].mainsnak.datavalue.value.latitude  args[2]=entity.claims.P625[1].mainsnak.datavalue.value.longitude  if precision then  precision=-math_mod._round(math.log(precision)/math.log(10),0)  args[1]=math_mod._round(args[1],precision)  args[2]=math_mod._round(args[2],precision)  end  end  end   local contents, backward = formatTest(args)  local Notes = args.notes or ''  local Display = args.display and args.display:lower() or 'inline'   local function isInline(s)  -- Finds whether coordinates are displayed inline.  return s:find('inline') ~= nil or s == 'i' or s == 'it' or s == 'ti'  end  local function isInTitle(s)  -- Finds whether coordinates are displayed in the title.  return s:find('title') ~= nil or s == 't' or s == 'it' or s == 'ti'  end   local function coord_wrapper(in_args)  -- Calls the parser function {{#coordinates:}}.  return mw.getCurrentFrame():callParserFunction('#coordinates', in_args) or ''  end   local text = ''  if isInline(Display) then  text = text .. displayinline(contents, Notes)  end  if isInTitle(Display) then  text = text  .. displaytitle(contents, Notes)  .. makeWikidataCategories()  end  if not args.nosave then  local page_title, count = mw.title.getCurrentTitle(), 1  if backward then  local tmp = {}  while not string.find((args[count-1] or ''), '[EW]') do tmp[count] = (args[count] or ''); count = count+1 end  tmp.count = count; count = 2*(count-1)  while count >= tmp.count do table.insert(tmp, 1, (args[count] or '')); count = count-1 end  for i, v in ipairs(tmp) do args[i] = v end  else  while count <= 9 do args[count] = (args[count] or ''); count = count+1 end  end  if isInTitle(Display) and not page_title.isTalkPage and page_title.subpageText ~= 'doc' and page_title.subpageText ~= 'testcases' then args[10] = 'primary' end  args.notes, args.format, args.display = nil  text = text .. coord_wrapper(args)  end  return text end  --[[ coord2text  Extracts a single value from a transclusion of {{Coord}}. IF THE GEOHACK LINK SYNTAX CHANGES THIS FUNCTION MUST BE MODIFIED.  Usage:   {{#invoke:Coordinates | coord2text | {{Coord}} | parameter }}  Valid values for the second parameter are: lat (signed integer), long (signed integer), type, scale, dim, region, globe, source  ]] function coordinates.coord2text(frame)  if frame.args[1] == '' or frame.args[2] == '' or not frame.args[2] then return nil end  frame.args[2] = mw.text.trim(frame.args[2])  if frame.args[2] == 'lat' or frame.args[2] == 'long' then  local result, negative = mw.text.split((mw.ustring.match(frame.args[1],'[%.%d]+°[NS] [%.%d]+°[EW]') or ''), ' ')  if frame.args[2] == 'lat' then  result, negative = result[1], 'S'  else  result, negative = result[2], 'W'  end  result = mw.text.split(result, '°')  if result[2] == negative then result[1] = '-'..result[1] end  return result[1]  else  return mw.ustring.match(frame.args[1], 'params=.-_'..frame.args[2]..':(.-)[ _]')  end end  --[[ coordinsert  Injects some text into the Geohack link of a transclusion of {{Coord}} (if that text isn't already in the transclusion). Outputs the modified transclusion of {{Coord}}. IF THE GEOHACK LINK SYNTAX CHANGES THIS FUNCTION MUST BE MODIFIED.  Usage:   {{#invoke:Coordinates | coordinsert | {{Coord}} | parameter:value | parameter:value | … }}  Do not make Geohack unhappy by inserting something which isn't mentioned in the {{Coord}} documentation.  ]] function coordinates.coordinsert(frame)  for i, v in ipairs(frame.args) do  if i ~= 1 then  if not mw.ustring.find(frame.args[1], (mw.ustring.match(frame.args[i], '^(.-:)') or '')) then  frame.args[1] = mw.ustring.gsub(frame.args[1], '(params=.-)_? ', '%1_'..frame.args[i]..' ')  end  end  end  if frame.args.name then  if not mw.ustring.find(frame.args[1], '<span class="vcard">') then  local namestr = frame.args.name  frame.args[1] = mw.ustring.gsub(frame.args[1],  '(<span class="geo%-default">)(<span[^<>]*>[^<>]*</span><span[^<>]*>[^<>]*<span[^<>]*>[^<>]*</span></span>)(</span>)',  '%1<span class="vcard">%2<span style="display:none">&#xfeff; (<span class="fn org">' .. namestr .. '</span>)</span></span>%3')  frame.args[1] = mw.ustring.gsub(frame.args[1], '(&params=[^&"<>%[%] ]*) ', '%1&title=' .. mw.uri.encode(namestr) .. ' ')  end  end  return frame.args[1] end  return coordinates