Module:Logoform

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This documentation is transcluded from Module:Logoform/doc.

--  Module for: Formatting Logo
local p = {}

local concat = table.concat
local split = mw.text.split
local trim = mw.text.trim
local upper = mw.ustring.upper
local sub = mw.ustring.sub

local function ucfirst(s)
	return upper(sub(s, 1, 1)) .. sub(s, 2)
end

function p.format(frame)
	local gpar = frame.args -- global

	local fname = ucfirst(trim(gpar[1] or ''))
	if fname == '' then return '' end -- if file name is "unspecified"

	local size = trim(gpar[2] or '') -- or '0' for "unspecified"
	if size:sub(-2) == 'px' then size = size:sub(1, -3) end -- discard 'px' unit if present
	size = split(size, 'x') -- {width, height} or {height}
	size = size[2] and size[2] or size[1] -- keep only the specified height (in px)

	local style = trim(gpar[3] or '') -- or '-' for "unspecified"
	if	style == '-' then style = '' end

	local title = trim(gpar[4] or '') -- or '' for "unspecified"
	if title == '' then title = fname--[[default title]] end

	local what = 'F' -- assume displaying a file
	if	fname:find('.', 1, true--[[plain, not regexp]]) then
		if size == '' or size == '0' then
			size = '36' --	default file size (in px)
		end
	elseif fname:sub(1, 2) == 'U+' or fname:sub(1, 2) == '&#' then
		what = 'U' -- displaying an Unicode code point instead of a file
		if	size == '' or size == '0' then
			size = '15' -- Unicode default font-size (in px)
		end
		title = trim(title
			:gsub('U+([0-9A-Fa-f]+) ?', function(x) return 'U+' .. upper(x) .. ' ' end)
			:gsub('&#([0-9A-Fa-f]+);?', function(x) return 'U+' .. upper(x) .. ' ' end))
		fname = fname
			:gsub('&#([0-9A-Fa-f]+);?', function(x) return '&#x' .. upper(x) .. ';' end)
			:gsub('U+([0-9A-Fa-f]+) ?', function(x) return '&#x' .. upper(x) .. ';' end)
	end

	if what == 'F' then -- displaying a file
		if style ~= '' then
			style = '|' .. style
		end
		if title ~= '' then
			title = '|' .. title
				:gsub('%[', '[')
				:gsub('%]', ']')
				:gsub('%|', '{')
		end
		return concat{ '[[File:', fname, '|', size, 'x22px', style--[[allow linking]], title, ']]' }
	else -- displaying an Unicode code point
		if title ~= '' then
			title = concat{ ' title="', title:gsub('"', '"', true--[[plain]]), '"' }
		end
		return concat{ '<span style="font-size:', size, 'px;line-height:22px;vertical-align:middle', style, '"', title, '>', fname, '</span>' }
	end	
end -- function format

return p