模块:No globals：修订间差异

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    require('Module:No globals')
    local mt = getmetatable(_G) or {}
     
    function mt.__index (t, k)
    local p = {}
    if k ~= 'arg' then
     
    error('尝试读取空全局变量：' .. tostring(k), 2)
    local getArgs = require('Module:Arguments').getArgs
     
    function p.getMapParams(map, frame)
    if not map then
    error('The name of the location map definition to use must be specified', 2)
    end
    end
    local moduletitle = mw.title.new('Module:Location map/data/' .. map)
    return nil
    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 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, {frameOnly = true})
    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 = {
    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, 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
    return decimal
    end
    end
     
    function mt.__newindex(t, k, v)
    function p.top(frame, args, map)
    if k ~= 'arg' then
    if not args then
    error('尝试写入全局变量：' .. tostring(k), 2)
    args = getArgs(frame, {frameOnly = true})
    end
    if not map then
    map = p.getMapParams(args[1], frame)
    end
    local width
    if not args.width then
    width = math.floor((args.default_width or 240) * (tonumber(map('defaultscale')) or 1) + 0.5)
    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 '<div class="center">' or ''
    if args.caption and args.caption ~= '' then
    retval = retval .. '<div class="thumb '
    if args.float == '"left"' or args.float == 'left' then
    retval = retval .. 'tleft'
    elseif args.float == '"center"' or args.float == 'center' or args.float == '"none"' or args.float == 'none' then
    retval = retval .. 'tnone'
    else
    retval = retval .. 'tright'
    end
    retval = retval .. '"><div class="thumbinner" style="width:' .. (width + 2) .. 'px'
    if args.border == 'none' then
    retval = retval .. ';border:none'
    elseif args.border then
    retval = retval .. ';border-color:' .. args.border
    end
    retval = retval .. '"><div style="position:relative;width:' .. width .. 'px' .. (args.border ~= 'none' and ';border:1px solid lightgray">' or '">')
    else
    retval = retval .. '<div style="width:' .. width .. 'px;'
    if args.float == '"left"' or args.float == 'left' then
    retval = retval .. 'float:left;clear:left'
    elseif args.float == '"center"' or args.float == 'center' then
    retval = retval .. 'float:none;clear:both;margin-left:auto;margin-right:auto'
    elseif args.float == '"none"' or args.float == 'none' then
    retval = retval .. 'float:none;clear:none'
    else
    retval = retval .. 'float:right;clear:right'
    end
    retval = retval .. '"><div style="width:' .. width .. 'px;padding:0"><div style="position:relative;width:' .. width .. 'px">'
    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 .. '[[File:' .. image .. '|' .. width .. 'px|' .. (args.alt or ((args.label or mw.title.getCurrentTitle().text) .. ' is located in ' .. map('name'))) .. ']]'
    if args.overlay_image then
    return retval .. '<div style="position:absolute;top:0;left:0">[[File:' .. args.overlay_image .. '|' .. width .. 'px|link=File:' .. image .. ']]</div>'
    else
    return retval
    end
    end
     
    -- effectively make removeBlanks false for caption, and true for everything else
    -- p.bottom and its callers need to use this
    local function valueFunc(key, value)
    if value then
    value = mw.text.trim(value)
    end
    if value ~= '' or key == 'caption' then
    return value
    end
    end
     
    function p.bottom(frame, args, map)
    if not args then
    args = getArgs(frame, {frameOnly = true, valueFunc = valueFunc})
    end
    if not map then
    map = p.getMapParams(args[1], frame)
    end
    local retval = '</div><div ' .. (args.caption and args.caption ~= '' and 'class="thumbcaption">' or 'style="font-size:90%;padding-top:3px">')
    .. (args.caption or ((args.label or mw.title.getCurrentTitle().text) .. ' (' .. map('name') .. ')'))
    .. '</div></div></div>'
    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 .. '[[Category:Location maps with possible errors|Page using removed parameter]]'
    end
    if args.float == 'center' then
    retval = retval .. '</div>'
    end
    return retval
    end
     
    function p.container(frame, args, map)
    if not args then
    args = getArgs(frame, {wrappers = 'Template:Location map+', valueFunc = valueFunc})
    end
    if not map then
    map = p.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, imageDiv, labelDiv)
    return mw.html.create('div')
    :cssText('position:absolute;top:' .. y .. '%;left:' .. x .. '%;height:0;width:0;margin:0;padding:0')
    :node(imageDiv)
    :node(labelDiv)
    end
     
    local function markImageDiv(mark, marksize, label, link, alt, title)
    local builder = mw.html.create('div')
    :cssText('position:relative;text-align:center;left:-' .. math.floor(marksize / 2 + 0.5) .. 'px;top:-' .. math.floor(marksize / 2 + 0.5) .. 'px;width:' .. marksize .. 'px;font-size:' .. marksize .. 'px;line-height:0')
    :attr('title', title)
    if marksize ~= 0 then
    builder:wikitext(string.format(
    '[[File:%s|%dx%dpx|%s|link=%s%s]]',
    mark,
    marksize,
    marksize,
    label,
    link,
    alt and ('|alt=' .. alt) or ''
    ))
    end
    return builder
    end
     
    local function markLabelDiv(label, label_size, label_width, position, background, x)
    local builder = mw.html.create('div')
    :cssText('font-size:' .. label_size .. '%;line-height:110%;position:relative;top:-1.5em;width:' .. label_width .. 'em')
    if position == 'top' then -- specified top
    builder:cssText('top:-2.65em;left:-3em;text-align:center')
    elseif position == 'bottom' then -- specified bottom
    builder:cssText('top:-0.15em;left:-3em;text-align:center')
    elseif position == 'left' or (tonumber(x) > 70 and position ~= 'right') then -- specified left or autodetected to left
    builder:cssText('left:-6.5em;text-align:right')
    else -- specified right or autodetected to right
    builder:cssText('left:0.5em;text-align:left')
    end
    builder = builder:tag('span')
    :cssText('padding:1px')
    :wikitext(label)
    if background then
    builder:cssText('background-color:' .. background)
    end
    return builder:done()
    end
     
    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 / width
    end
     
    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, {wrappers = 'Template:Location map~'})
    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')
    local builder = mw.html.create()
    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('[[Category:Location maps with possible errors|Page using removed parameter]]')
    end
    if (map('skew') ~= '') or (map('lat_skew') ~= '') or (map('crosses180') ~= '') then
    mw.log('Removed parameter used in map definition. Map definition name is ' .. args[1])
    builder:wikitext('[[Category:Location maps with possible errors|Map using removed parameter]]')
    end
    if map('x') ~= '' then
    x = tonumber(mw.ext.ParserFunctions.expr(map('x', { latitude, longitude })))
    else
    x = tonumber(getX(longitude, map('left'), map('right')))
    end
    if map('y') ~= '' then
    y = tonumber(mw.ext.ParserFunctions.expr(map('y', { latitude, longitude })))
    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('[[Category:Location maps with possible errors|Outside flag not set with mark outside map]]')
    end
    local mark = args.mark or map('mark')
    if mark == '' then
    mark = 'Red pog.svg'
    end
    local imageDiv = 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])
    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)
    end
    return builder:node(markOuterDiv(x, y, imageDiv, labelDiv))
    end
     
    function p.main(frame, args, map)
    if not args then
    args = getArgs(frame, {wrappers = 'Template:Location map', valueFunc = valueFunc})
    end
    if not args[1] then
    args[1] = 'World'
    end
    if not map then
    map = p.getMapParams(args[1], frame)
    end
    return p.top(frame, args, map) .. tostring( 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'],
    outside = fullArgs['outside' .. n],
    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, {wrappers = 'Template:Location map many', valueFunc = valueFunc})
    end
    if not args[1] then
    args[1] = 'World'
    end
    if not map then
    map = p.getMapParams(args[1], frame)
    end
    local marks = {}
    local markhigh
    if args.markhigh then
    mw.log('Removed parameter markhigh used.')
    local parent = frame:getParent()
    if parent then
    mw.log('Parent is ' .. parent:getTitle())
    end
    mw.logObject(args, 'args')
    markhigh = true
    end
    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 .. tostring( p.mark(frame, manyMakeArgs(args, v), map) )
    if args['mark' .. v .. 'high'] then
    mw.log('Removed parameter mark' .. v .. 'high used.')
    local parent = frame:getParent()
    if parent then
    mw.log('Parent is ' .. parent:getTitle())
    end
    mw.logObject(args, 'args')
    markhigh = true
    end
    end
    end
    args.label = nil -- there is no global label
    rawset(t, k, v)
    return p.top(frame, args, map) .. body .. p.bottom(frame, args, map) .. (markhigh and '[[Category:Location maps with possible errors|Page using removed parameter]]' or '')
    end
    end
     
    setmetatable(_G, mt)
    return p

    2020年2月7日 (五) 20:31的最新版本

    可在模块:No globals/doc创建此模块的帮助文档 

    local mt = getmetatable(_G) or {}
function mt.__index (t, k)
	if k ~= 'arg' then
		error('尝试读取空全局变量：' .. tostring(k), 2)
	end
	return nil
end
function mt.__newindex(t, k, v)
	if k ~= 'arg' then
		error('尝试写入全局变量：' .. tostring(k), 2)
	end
	rawset(t, k, v)
end
setmetatable(_G, mt)
    取自“https://wiki.sukasuka.cn/index.php?title=模块:No_globals&oldid=4568”