Attention Mobile version Mobile Users! Registration for Mobile 1.3 Beta Testing is live! Register here!

Module:Item

From Terraria Wiki
Jump to: navigation, search

This module is intended to provide functionality to the {{item}} template.


------- l10n info --------------
local l10n_info = mw.loadData('Module:Item/l10n')

------- The following is not related to l10n. --------------

local trim = mw.text.trim
local cargo = mw.ext.cargo
local eicons = require('Module:Exclusive').simpleEicons

local currentFrame
local args_table
local lang
local l10n_table
local image_for_cargo

local l10n = function(key)
	return l10n_table[key] or l10n_info['en'][key]
end

local getArg = function(key)
	local value = args_table[key]
	if not value then
		return nil
	end
	value = trim(value)
	if value == '' then
		return nil
	end
	return value
end

-- credit: http://richard.warburton.it
-- this version is with trim.
local function explode(div,str) 
	if (div=='') then return false end
	local pos,arr = 0,{}
	-- for each divider found
	for st,sp in function() return string.find(str,div,pos,true) end do
		table.insert(arr,trim(string.sub(str,pos,st-1))) -- Attach chars left of current divider
		pos = sp + 1 -- Jump past current divider
	end
	table.insert(arr, trim(string.sub(str,pos))) -- Attach chars right of last divider
	return arr
end

local function parseSize(size)
	if not size then return end
	local basescale, width, height
	size, basescale = unpack(explode('*', size))
	if size ~= '' then
		width, height = unpack(explode('x', string.gsub(size, 'px', '')))
		width, height = tonumber(width), tonumber(height)
		if width == 0 then width = nil end
		if height == 0 then height = nil end
	end
	return basescale, width, height
end

local function getInfoFromCargo(image)
	-- try to get from cargo cache
	local result = mw.ext.cargo.query('Imageinfo', 'width, height, cached', {
		where = 'image='.. "'"..image:gsub("'", "\\'"):gsub("'", "\\'").."'",
		orderBy = "cached DESC",
		limit = 1,
	})
	for _, row in ipairs(result) do
		return tonumber(row['width']), tonumber(row['height']), row['cached']
	end
end

local function storeInfoToCargo(image)
	local width, height
	width = tonumber(currentFrame:callParserFunction( '#imgw', image))
	if width and width ~= 0 then -- save one expensive call when the file is not a valid image.
		height = tonumber(currentFrame:callParserFunction( '#imgh', image))
		if height and height ~= 0 then
			currentFrame:callParserFunction('#cargo_store:_table=Imageinfo',{
				image = image,
				width = width,
				height = height,
				cached = os.time(),
			})
		end
	end
	return width, height
end

local function getSizeInfo(image)
	local width, height, cached = getInfoFromCargo(image)
	-- cache missed, init cache
	if not cached then
		width, height = storeInfoToCargo(image)
	end
	if width == 0 then width = nil end
	if height == 0 then height = nil end
	return width, height
end

local function getImageSize(image, width, height, scale, maxwidth, maxheight)
	-- get size info from image file itself (may be expensive)
	local w, h = getSizeInfo(image) -- store data to cache

	if not width and not height and (scale or maxwidth or maxheight) then
		width, height = w, h
	end

	-- apply scale to width/height if needed
	if scale then
		if width then width = width * scale end
		if height then height = height * scale end
	end

	-- apply maxwidth/maxheight.
	if maxwidth then
		if width then
			if width > maxwidth then width = maxwidth end
		else
			if height then width = maxwidth end
		end
	end
	if maxheight then
		if height then
			if height > maxheight then height = maxheight end
		else
			if width then height = maxheight end
		end
	end

	-- rounding
	if width then width = math.ceil(width) end
	if height then height = math.ceil(height) end

	return width, height
end

local function parseMaxSize(maxsize)
	if not maxsize then return end
	local maxwidth, maxheight = unpack(explode('x', string.gsub(maxsize, 'px', '')))
	maxwidth, maxheight = tonumber(maxwidth), tonumber(maxheight)
	if maxwidth == 0 then maxwidth = nil end
	if maxheight == 0 then maxheight = nil end
	return maxwidth, maxheight
end

local function imagecode(image, link, text, size, scale, maxsize)
	local image_output = '[[File:' .. image .. '|link='.. link .. '|' .. text
	if size or scale or maxsize then
		local basescale, width, height = parseSize(size) -- width,height: number or nil
		scale = (tonumber(scale) or 1) * (tonumber(basescale) or 1)
		if scale == 0 or scale == 1 then
			scale = nil
		end
		local maxwidth, maxheight = parseMaxSize(maxsize)
		width, height = getImageSize(image, width, height, scale, maxwidth, maxheight) -- can be 0
		if width or height then
			return image_output .. '|' .. (width or '') .. 'x' .. (height or '') .. 'px]]'
		else
			return image_output .. ']]'
		end
	else
		return image_output .. ']]'
	end
end


local function images(image, link, text, size, scale, maxsize)
	
	if not image:find('/') then
		image_for_cargo = image
		return imagecode(image, link, text, size, scale, maxsize)
	end

	image = explode('/', image)
	local result = ''
	if size and size:find('/') then
		size = explode('/', size)
		for i, v in ipairs(image) do
			result = result .. imagecode(v, link, text, size[i], scale, maxsize)
		end
	else
		for i, v in ipairs(image) do
			result = result .. imagecode(v, link, text, size, scale, maxsize)
		end
	end
	return result
end

local getIdText = function(_type)
	local id_text, needcargo
	if _type == 'item' then -- a shortcut for faster
		id_text = l10n('id_text_item')
		needcargo = true
	elseif _type == 'tile' then
		id_text = l10n('id_text_tile')
	elseif _type == 'wall' then
		id_text = l10n('id_text_wall')
	elseif _type == 'npc' then
		id_text = l10n('id_text_npc')
	elseif _type == 'mount' then
		id_text = l10n('id_text_mount')
	elseif _type == 'buff' or _type == 'debuff' then
		id_text = l10n('id_text_buff')
	elseif _type == 'projectile' then
		id_text = l10n('id_text_projectile')
	elseif _type == 'armor' then
		id_text = l10n('id_text_armor')
	else
		id_text = l10n('id_text_item')
		needcargo = true
	end
	return id_text, needcargo
end

-----------------------------------------------------------------
-- main return object
return {
	
go = function(frame, args)
	-- init cache
	currentFrame = frame
	args_table = args or frame.args
	lang = getArg('lang') or 'en'
	l10n_table = l10n_info[lang] or l10n_info['en']

	local _arg1 = getArg(1) or ''
	local _nolink = getArg('nolink')

	-- link target and eicons target
	local _link, _eicons_link = getArg('link'), nil
	if _link then -- override _nolink = y
		_eicons_link = _link -- _eicontr does not affect _link
	else
		if _nolink then 
			_link = ''
			if getArg('eicontr') then
				_eicons_link = getArg('trname') or frame:expandTemplate{ title = 'tr', args = {_arg1, link = 'y', lang=lang} }
			else
				_eicons_link = _arg1
			end
		else
			-- no link=<link> input, use _arg1 with auto link translation.
			_link = getArg('trname') or frame:expandTemplate{ title = 'tr', args = {_arg1, link = 'y', lang=lang} }
			if getArg('eicontr') then
				_eicons_link = _link -- reuse
			else
				_eicons_link = _arg1
			end
		end
	end
	-- now _link == '' means nolink.

	local text = getArg(2) or ''

	local class = 'item-link'

	local output_image, output_text, output_table = true, true, false
	local _mode = getArg('mode')
	if _mode then
		if _mode == 'image' or _mode == 'imageonly' or _mode =='onlyimage' then
			output_text = false
		elseif _mode == 'text' or _mode == 'noimage' then
			output_image = false
		elseif _mode == 'table' or _mode == '2-cell' then
			output_table = true
		end
	end

	local image_output, text_output
	if output_image then
		image_output = images(getArg('image') or (string.gsub(_arg1, ":%s*", " ") .. '.' .. (getArg('ext') or 'png')), _link, text, getArg('size'), getArg('scale'), getArg('maxsize'))
	else
		image_output = ''
	end
	if output_text then
		local _note, _note2, _showid, _id = getArg('note'), getArg('note2'), getArg('showid'), getArg('id')

		if _id and not _showid then
			_showid = true
		end
		if _showid and (_showid == 'n' or _showid == 'no') then
			_showid = false
		end

		local _wrap
		if _showid or _note2 then
			_wrap = false
		else
			_wrap = getArg('wrap')
		end

		if _link ~= '' then
			if text == _link then
				text = '[['..text..']]'
			else
				text = '[['.._link..'|'..text..']]'
			end
		end

		local _icon, icon = getArg('icons'), nil
		if _icon == 'n' or _icon == 'no' or _icon == 'off' then
			icon = ''
		else
			icon = eicons(_eicons_link, lang, (_showid or _note2 or _wrap or getArg('small')) and 'y')
		end

		local content = '<span>' .. text .. '</span>' -- item name link text first.
		-- '-w' class means 'wrapmode', optimized for multiple lines of text. But it should be disabled for single line text.
		if _wrap then
			-- eicons in the same line
			if icon ~= '' then
				class = class .. ' -w'
				content = content .. icon
			end
			-- note in next line
			if _note then
				class = class .. ' -w'
				content = content .. '<span class="note">' .. _note .. '</span>'
			end
		else
			-- note first
			if _note then
				content = content .. '<span class="note">' .. _note .. '</span>'
			end
			if icon ~= '' then
				content = content .. icon
			end
			if _note2 then
				class = class .. ' -w'
				content = content .. '<div class="note">' .. _note2 .. '</div>'
			end
			if _showid then
				class = class .. ' -w'
				local idtype = (getArg('type') or 'item'):lower() 
				if not _id then
					_id = frame:expandTemplate{ title = idtype .. 'IdFromName', args = {_arg1} }
				end
				local id_text, needcargo = getIdText(idtype)
				if needcargo and image_for_cargo then
					frame:expandTemplate{ title = 'Item/cargo', args = {name=_arg1, image=image_for_cargo, id=_id} }
				end
				content = content .. '<div class="id">' .. id_text .. _id .. '</div>'
			end
		end
		text_output = '<span>' .. content .. '</span>'
	else
		text_output = ''
	end

	local _class, _css = getArg('class'), getArg('css')
	if _class then
		class = class .. ' ' .. _class
	end
	local attr = {class = class}
	if _css then
		attr.style = _css
	end
	
	if getArg('anchor') then
		text_output = text_output .. '<div class="anchor" id="' .. frame:callParserFunction('anchorencode', _arg1) .. '"></div>'
	end
	if output_table then
		attr.class = class .. ' block aligncenter'
		local result = mw.text.tag('span', attr, image_output) .. '||'
		attr.class = class .. ' block alignleft'
		return result .. mw.text.tag('span', attr, text_output)
	else
		return mw.text.tag('span', attr, image_output .. text_output)
	end
end,
	
}