モジュール:Multiple image/sandbox

-- implements template:multiple image
local p = {}
local autoscaledimages
local nonautoscaledimages
local function isnotempty(s)
	return s and s:match( '^%s*(.-)%s*$' ) ~= 
end
local function getdimensions(s, w, h)
	if tonumber(w) and tonumber(h) then
		nonautoscaledimages = true
		return tonumber(w), tonumber(h)
	end
	local file = s and mw.title.new('File:' .. mw.uri.decode(s, 'WIKI'))
	file = file and file.file or {width = 0, height = 0}
	w = tonumber(file.width) or 0
	h = tonumber(file.height) or 0
	autoscaledimages = true
	return w, h
end
local function renderImageCell(image, width, height, link, alt, thumbtime, caption, textalign, istyle)
	local root = mw.html.create()
	local altstr = '|alt=' .. (alt or )
	local linkstr = link and ('|link=' .. link) or 
	local widthstr = '|' .. tostring(width) .. 'px'
	local thumbtimestr = 
	if isnotempty( thumbtime ) then
		thumbtimestr = '|thumbtime=' .. thumbtime
	end
	local imagediv = root:tag('div')
	imagediv:addClass('thumbimage')
	imagediv:cssText(istyle)
	if( height ) then
		imagediv:css('height', tostring(height) .. 'px')
		imagediv:css('overflow', 'hidden')
	end
	imagediv:wikitext('file:' .. image .. widthstr .. linkstr .. altstr .. thumbtimestr .. )
	if isnotempty(caption) then
		local captiondiv = root:tag('div')
		captiondiv:addClass('thumbcaption')
		captiondiv:css('clear', 'left')
		if isnotempty(textalign) then
			captiondiv:css('text-align', textalign)
		end
		captiondiv:wikitext(caption)
	end
	return tostring(root)
end
local function getWidth(w1, w2)
	local w
	if isnotempty(w1) then
		w = tonumber(w1)
	elseif isnotempty(w2) then
		w = tonumber(w2)
	end
	return w or 200
end
local function getPerRow(pstr, ic)
	-- split string into array using any non-digit as a dilimiter
	local pr = mw.text.split(pstr or , '^%d^%d*')
	-- if split failed, assume a single row
	if (#pr  0 ) do
		prownumr = thisrow
		ic = ic - thisrow
		r = r + 1
		-- use the previous if the next is missing and
		-- make sure we don't overstep the number of images
		thisrow = math.min(tonumber(prr or thisrow) or ic, ic)
	end
	return prownum
end
local function renderMultipleImages(frame)
	local pargs = frame:getParent().args
	local args = frame.args
	local width = pargs'width' or 
	local dir = pargs'direction' or 
	local align = pargs'align' or args'align' or 
	local capalign = pargs'caption_align' or args'caption_align' or 
	local totalwidth = pargs'total_width' or args'total_width' or 
	local imgstyle = pargs'image_style' or args'image_style'
	local header = pargs'header' or pargs'title' or 
	local footer = pargs'footer' or 
	local imagegap = tonumber(pargs'image_gap' or '1') or 1
	local perrow = nil
	local thumbclass = {
		"left" = 'tleft',
		"none" = 'tnone',
		"center" = 'tnone',
		"centre" = 'tnone',
		"right" = 'tright'
		}
	-- find all the nonempty images
	local imagenumbers = {}
	local imagecount = 0
	for k, v in pairs( pargs ) do
		local i = tonumber(tostring(k):match( '^%s*image(%d+)%s*$' ) or '0')
		if( i > 0 and isnotempty(v) ) then
			table.insert( imagenumbers, i)
			imagecount = imagecount + 1
		end
	end
	-- sort the imagenumbers
	table.sort(imagenumbers)
	-- create an array with the number of images per row
	perrow = getPerRow(dir == 'vertical' and '1' or pargs'perrow', imagecount)
	-- compute the number of rows
	local rowcount = #perrow
	-- store the image widths and compute row widths and maximum row width
	local heights = {}
	local widths = {}
	local widthmax = 0
	local widthsum = {}
	local k = 0
	for r=1,rowcount do
		widthsumr = 0
		for c=1,perrowr do
			k = k + 1
			if( k  0) then
						arj = widthsk/h
						heightsk = h
					else
						arj = widthsk/100
					end
					arsum = arsum + arj
				end
			end
			local ht = tw/arsum
			local ws = 0
			k = koffset
			for j=1,perrowr do
				k = k + 1
				if( k 0 ) then
		-- compute width of outer div
		local bodywidth = 0
		for r=1,rowcount do
			if( widthmax == widthsumr ) then
				bodywidth = widthmax + (3 + imagegap) * (perrowr - 1) + 12
			end
		end
		-- The body has a min-width of 100, which needs to be taken into account on specific widths
		bodywidth = math.max( 100, bodywidth - 8);
		local bg = pargs'background color' or 
		-- create the array of images
		local root = mw.html.create('div')
		root:addClass('thumb')
		root:addClass('tmulti')
		root:addClass(thumbclassalign or 'tright')
		if( align == 'center' or align == 'centre' ) then
			root:addClass('center')
		end
		if( pargs'margin_top' or args'margin_top') then
			root:css('margin-top', pargs'margin_top' or args'margin_top')
		end
		if( pargs'margin_bottom' or args'margin_bottom') then
			root:css('margin-bottom', pargs'margin_bottom' or args'margin_bottom')
		end
		if( bg ~=  ) then
			root:css('background-color', bg)
		end
		local div = root:tag('div')
		div:addClass('thumbinner')
		div:css('width', tostring(bodywidth) .. 'px')
			:css('max-width', tostring(bodywidth) .. 'px')
		if( bg ~=  ) then
			div:css('background-color', bg)
		end
		-- add the header
		if( isnotempty(header) ) then
			div:tag('div')
				:css('clear', 'both')
				:css('font-weight', 'bold')
				:css('text-align', pargs'header_align' or 'center')
				:css('background-color', pargs'header_background' or 'transparent')
				:wikitext(header)
		end
		-- loop through the images
		local k = 0
		for r=1,rowcount do
			for j=1,perrowr do
				k = k + 1
				if( k  1) and (j < perrowr)) then
						imagediv:css('margin-right', tostring(imagegap) .. 'px')
					end
					local i = imagenumbersk
					local img = pargs'image' .. i
					local w = widthsk
					imagediv:css('width', tostring(2 + w) .. 'px')
						:css('max-width', tostring(2 + w) .. 'px')
					imagediv:wikitext(renderImageCell(img, w, heightsk,
						pargs'link' .. i, pargs'alt' .. i,
						pargs'thumbtime' .. i, pargs'caption' .. i, capalign, imgstyle))
				end
			end
			-- only float content gives a parent height:0, so add a clearing div
			if dir ~= 'vertical' then
				div:tag('div')
					:css('clear', 'left')
			end
		end
		-- add the footer
		if( isnotempty(footer) ) then
			div:tag('div')
				:addClass('thumbcaption')
				:css('clear', 'left')
				:css('text-align', pargs'footer_align' or args'footer_align' or 'left')
				:css('background-color', pargs'footer_background' or 'transparent')
				:wikitext(footer)
		end
		return tostring(root)
	end
	return 
end
function p.render( frame )
	autoscaledimages = false
	nonautoscaledimages = false
	return renderMultipleImages( frame )
		.. (autoscaledimages and  or )
		.. (nonautoscaledimages and  or )
end
return p