模組:Category tree

下列說明文檔位於Module:Category tree/doc。^[編輯]

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This module is used for generating category boilerplate templates. It is not meant to be used directly. Rather, each template will have its own submodule, which handles the specifics of that template.

This documentation only covers the generics of the category tree system. If you are looking for documentation on a specific template, or on how to add or modify category information, see the documentation of that template.

參數

The category tree module is invoked as:

{{#invoke:category tree|show|template=name of the template|...other parameters...}}

Every template that uses this module should have a submodule of this module with the name given in the |template= parameter. (For example, {{poscatboiler}} uses Module:category tree/poscatboiler.) This submodule should export a function named new which takes a single parameter: a table named info that contains the various parameters that were passed to the template initially. This function should return a new Category object representing those parameters, or nil if the combination of parameters was not valid (i.e. no such category exists).

Most templates accept and pass this common set of parameters. The parameters passed to the module by a template are defined by that template individually, so not every template will necessarily use all of these. {{family cat}} for example only passes the |code= parameter to the module.

|code=

The code that specifies what 'owns' the category's contents. This is usually a language code such as en, but it can also be a script code like Latn or the code of a language family, depending on how the specific template treats it.

|label=

A name for the thing that is being categorised. The submodule determines how the label is interpreted, so it depends on the template being used. Many templates use it to look up data in a table, while others may interpret it as a language code of some kind.

|sc=

The script code of the items to be categorised. This is usually empty, but many categories such as those used by Mandarin Chinese can split into subcategories based on script.

一般工作

The module is based on the principle of two main kinds of category:

Basic categories are those for which the |code= parameter is not empty. These therefore belong to a specific language (or similar) and are the "regular" categories. Examples are: Category:English nouns, Category:French templates, Category:nl:Linguistics, Category:English terms derived from Japanese, Category:Latin script characters.

Umbrella categories do not have a code, but contain all basic categories of their label, one for each code. These are the "by language" type categories. Examples are: Category:Nouns by language, Category:Templates by language, Category:Linguistics, Category:Terms derived from Japanese, Category:Characters by script.

Some templates also distinguish a third type of category, the fundamental category. This category is used as the parent category for umbrella categories.

Category objects

Template:Documentation outdated Category objects are returned by each submodule's new function. They represent a single category in the tree. A category object has a variety of methods which may be called on it to ask for information about the category.

getBreadcrumbName

getBreadcrumbName()

Returns the name that is used for the category in the "breadcrumbs" at the top of the category page.

getDataModule

getDataModule()

Returns the name of the module which contains the data for this category. This is used to create an "edit" link on the category, which allows users to find and edit the information more easily.

canBeEmpty

canBeEmpty()

Returns true either if the category contains pages but might be empty or if the category only contains categories, otherwise returns false.

getCategoryName

getCategoryName()

Returns the name of the category that this category object represents.

getDescription

getDescription()

Returns the description text that is shown at the top of the category page. If the category has no description, this returns nil.

getParents

getParents()

Returns a table of the parent categories of this category. Each element in the table is a table itself, with two elements:

.name

One of two possibilities: An category object representing the parent category, or a string that directly specifies the name of the parent category.

.sort

The sorting key that should be used when categorizing the current category in the parent.

If the category has no parents, this returns nil.

If there are two or more parent categories, the first will be used to generate the breadcrumbs that are displayed at the top of the category page. For example, Category:English language is in numerous categories (All languages, West Germanic languages, Latin script languages, Braille script languages, and so on), but the first category, All languages, is the one displayed in the breadcrumbs: Fundamental » All languages » English language.

getChildren

getChildren()

Returns a table of the child categories of this category. Each element in the table is a category object representing the child category. If the category has no children, this returns nil.

getUmbrella

getUmbrella()

Returns a category object for the current category's corresponding umbrella category. If the current category is already an umbrella category, this returns nil. It also returns nil if the category has no umbrella category.

getAppendix

getAppendix()

Returns an appendix link (such as Appendix:French verbs) if the page exists, else returns nil.

---

local export = {}

local m_utilities = require("Module:utilities")
local inFundamental = mw.loadData("Module:category tree/data")

local show_error, check_name, link_box, show_catfix, show_categories, show_intro, show_editlink,
	show_breadcrumbs, show_description, show_appendix, show_children, show_TOC

-- The main entry point.
-- This is the only function that can be invoked from a template.
function export.show(frame)
	local template = frame.args["template"]
	
	if not template or template == "" then
		error("template参数未指定。")
	end
	
	if mw.title.getCurrentTitle().nsText == "Template" then
		local text = {}
		table.insert(text, "本模板應該用於Category:命名空間頁面，")
		table.insert(text, "and automatically generates descriptions and categorization for categories of a recognized type (see below).")
		table.insert(text, " It is implemented by [[Module:category tree]] and its submodule [[Module:category tree/")
		table.insert(text, template .. "]].")
		if frame.args["useautocat"] then
			table.insert(text, " It is preferable not to invoke this template directly, but to simply use ")
			table.insert(text, require("Module:template link").format_link({"auto cat"}))
			table.insert(text, " (with no parameters), which will automatically invoke this template on appropriately-named category pages.")
		end
		return table.concat(text)
	elseif mw.title.getCurrentTitle().nsText ~= "Category" then
		error("本模板/模組只能用於Category:命名空間頁面。")
	end
	
	local submodule = require("Module:category tree/" .. template)
	
	-- Get all the parameters and the label data
	local current
	
	if submodule.new_main then
		current = submodule.new_main(frame)
	else
		local info = {}
		
		for key, val in pairs(frame.args) do
			if val ~= "" and key ~= "useautocat" then
				info[key] = val
			end
		end
	
		info.template = nil
		current = submodule.new(info, true)
	end
	
	local functions = {
		"getBreadcrumbName",
		"getDataModule",
		"canBeEmpty",
		"getDescription",
		"getParents",
		"getChildren",
		"getUmbrella",
		"getAppendix",
	}
	
	if current then
		for i, functionName in pairs(functions) do
			if type(current[functionName]) ~= "function" then
				require("Module:debug").track{ "category tree/missing function", "category tree/missing function/" .. functionName }
			end
		end
	end

	local boxes = {}
	local display = {}
	local categories = {}

	if template == "topic cat" then
		table.insert(categories, "[[Category:topic cat]]")
	end
	
	-- Check if the category is empty
	local isEmpty = mw.site.stats.pagesInCategory(mw.title.getCurrentTitle().text, "all") == 0
	
	-- Are the parameters valid?
	if not current then
		table.insert(categories, "[[Category:標籤無效的分類]]")
		table.insert(categories, isEmpty and "[[Category:空分類]]" or nil)
		table.insert(display, show_error(
			"傳遞給" ..
			require("Module:template link").format_link{template} ..
			"模板的label參數無效，可能尚未建立或拼寫錯誤。"))
		
		-- Exit here, as all code beyond here relies on current not being nil
		return table.concat(categories, "") .. table.concat(display, "\n\n")
	end
	
	-- Does the category have the correct name?
	if mw.title.getCurrentTitle().text ~= current:getCategoryName() and require('Module:Auto cat').st(mw.title.getCurrentTitle().text) ~= current:getCategoryName() then
		table.insert(categories, "[[Category:標題不正確的分類]]")
		table.insert(display, show_error(
			"根據傳遞給" ..
			require("Module:template link").format_link{template} ..
			"模板的參數，本分類的標題應爲-{'''[[:Category:" .. current:getCategoryName() .. "]]'''}-。"))
	end
	
	-- Add cleanup category for empty categories
	local canBeEmpty = current:canBeEmpty()
	if isEmpty and not canBeEmpty then
		table.insert(categories, "[[Category:空分類]]")
	end
	
	if current:isHidden() then
		table.insert(categories, "__HIDDENCAT__")
	end

	if canBeEmpty then
		table.insert(categories, " __EXPECTUNUSEDCATEGORY__")
	end
	
	table.insert(boxes, show_intro(current))
	table.insert(boxes, show_editlink(current))
	table.insert(boxes, show_related_changes())
	
	-- Generate the displayed information
	table.insert(display, show_breadcrumbs(current))
	table.insert(display, show_description(current))
	table.insert(display, show_appendix(current))
	table.insert(display, show_children(current))
	table.insert(display, show_TOC(current))
	table.insert(display, show_catfix(current))
	
	show_categories(current, categories)
	
	return table.concat(boxes, "\n") .. "\n" .. table.concat(display, "\n\n") .. table.concat(categories, "")
end

function show_error(text)
	return  mw.getCurrentFrame():expandTemplate{title = "maintenance box", args = {
		"red",
		image = "[[File:Ambox warning pn.svg|50px]]",
		title = "本分類自動生成的內容有錯誤。",
		text = text,
		}}
end

-- Check the name of the current page, and return an error if it's not right.
function check_name(current, template, info)
	local errortext = nil
	local category = nil
	
	if not current then
		errortext =
			"傳遞給" .. require("Module:template link").format_link{template} .. 
			"模板的label參數“" .. (info.label or "") .. "”無效，可能尚未建立或拼寫錯誤。"
		category = "[[Category:標籤無效的分類]]"
	else
		
	end
	
	if errortext then
		return (category or "") .. show_error(errortext)
	else
		return nil
	end
end

local function get_catfix_info(current)
	local lang, sc
	if current.getCatfixInfo then
		lang, sc = current:getCatfixInfo()
	elseif not (current._info and current._info.no_catfix) then
		-- FIXME: This is hacky and should be removed.
		lang = current._lang
		sc = current._info and current._info.sc and require("Module:scripts").getByCode(current._info.sc) or nil
	end
	return lang, sc
end

-- Show the "catfix" that adds language attributes and script classes to the page.
function show_catfix(current)
	local lang, sc = get_catfix_info(current)
	if lang then
		return m_utilities.catfix(lang, sc)
	else
		return nil
	end
end

-- Show the parent categories that the current category should be placed in.
function show_categories(current, categories)
	local parents = current:getParents()
	
	if not parents then
		return
	end
	
	for _, parent in ipairs(parents) do
		if type(parent.name) == "string" then
			table.insert(categories, "[[" .. parent.name .. "|" .. parent.sort .. "]]")
		else
			table.insert(categories, "[[Category:" .. parent.name:getCategoryName() .. "|" .. parent.sort .. "]]")
		end
	end
	
	-- Also put the category in its corresponding "umbrella" or "by language" category.
	local umbrella = current:getUmbrella()
	
	if umbrella then
		local sort
		if current._lang then
			sort = current._lang:getCanonicalName()
		else
			sort = current:getCategoryName()
		end
		
		if type(umbrella) == "string" then
			table.insert(categories, "[[" .. umbrella .. "|" .. sort .. "]]")
		else
			table.insert(categories, "[[Category:" .. umbrella:getCategoryName() .. "|" .. sort .. "]]")
		end
	end
end

function link_box(content)
	return "<div class=\"noprint plainlinks\" style=\"float: right; clear: both; margin: 0 0 .5em 1em; background: #f9f9f9; border: 1px #aaaaaa solid; margin-top: -1px; padding: 5px; font-weight: bold;\">"
		.. content .. "</div>"
end

function show_related_changes()
	local title = mw.title.getCurrentTitle().fullText
	return link_box(
		"["
		.. tostring(mw.uri.fullUrl("Special:RecentChangesLinked", {
			target = title,
			showlinkedto = 0,
		}))
		.. ' <span title="對' .. title .. '內頁面最近做出的編輯和其他更改">最近更改</span>]')
end

function show_editlink(current)
	return link_box(
		"[" .. tostring(mw.uri.fullUrl(current:getDataModule(), "action=edit"))
		.. " 编辑分类-{zh-hant:資料;zh-hans:数据}-]")
end

-- Show navigational "breadcrumbs" at the top of the page.
function show_breadcrumbs(current)
	local steps = {}
	
	-- Start at the current label and move our way up the "chain" from child to parent, until we can't go further.
	while current do
		local category = nil
		local display_name = nil
		
		if type(current) == "string" then
			category = current
			display_name = current:gsub("^Category:", "")
		else
			category = "Category:" .. current:getCategoryName()
			display_name = current:getBreadcrumbName()
		end

		table.insert(steps, 1, "[[:" .. category .. "|" .. display_name .. "]]")
		
		-- Move up the "chain" by one level.
		if type(current) == "string" then
			current = nil
		else
			current = current:getParents()
		end
		
		if current then
			current = current[1].name
		elseif inFundamental[category] then
			current = "Category:分类"
		end	
	end
	
	steps = table.concat(steps, " » ")
	
	return "<small>" .. steps .. "</small>"
end

-- Show the intro text that goes at the very top of the page.
function show_intro(current)
	return (current.getIntro and current:getIntro() or "")
end

-- Show a short description text for the category.
function show_description(current)
	return (current:getDescription() or "")
end

function show_appendix(current)
	local appendix
	
	if current.getAppendix then
		appendix = current:getAppendix()
	end
	
	if appendix then
		return "更多信息請見[[" .. appendix .. "]]。"
	else
		return nil
	end
end

-- Show a list of child categories.
function show_children(current)
	local children = current:getChildren()
	
	if not children then
		return nil
	end
	
	table.sort(children, function(first, second) return first.sort < second.sort end)
	
	local children_list = {}
	
	for _, child in ipairs(children) do
		local child_pagetitle
		if type(child.name) == "string" then
			child_pagetitle = child.name
		else
			child_pagetitle = "Category:" .. child.name:getCategoryName()
		end
		local child_page = mw.title.new(child_pagetitle)
		local child_page_simp = mw.title.new(require("Module:Zh").ts(child_pagetitle))
		
		if child_page.exists or child_page_simp.exists then
			local child_description =
				child.description or
				type(child.name) == "string" and child.name:gsub("^Category:", "") .. "." or
				child.name:getDescription("child")
			table.insert(children_list, "* [[:" .. child_pagetitle .. "]]：" .. child_description)
		end
	end
	
	return table.concat(children_list, "\n")
end

-- Show a table of contents with links to each letter in the language's script.
function show_TOC(current)
	local titleText = mw.title.getCurrentTitle().text
	
	local inCategoryPages = mw.site.stats.pagesInCategory(titleText, "pages")
	local inCategorySubcats = mw.site.stats.pagesInCategory(titleText, "subcats")

	local TOC_type

	-- Compute type of table of contents required.
	if inCategoryPages > 2500 or inCategorySubcats > 2500 then
		TOC_type = "full"
	elseif inCategoryPages > 200 or inCategorySubcats > 200 then
		TOC_type = "normal"
	else
		-- No (usual) need for a TOC if all pages or subcategories can fit on one page;
		-- but allow this to be overridden by a custom TOC handler.
		TOC_type = "none"
	end

	if current.getTOC then
		local TOC_text = current:getTOC(TOC_type)
		if TOC_text ~= true then
			return TOC_text
		end
	end

	if TOC_type ~= "none" then
		local lang, sc = get_catfix_info(current)
		local code = lang and lang:getCode() or ""

		local TOC_template
		if TOC_type == "full" then
			-- This category is very large, see if there is a "full" version of the TOC.
			local TOC_template_full = mw.title.new("Template:" .. code .. "-categoryTOC/full")
			
			if TOC_template_full.exists then
				TOC_template = TOC_template_full
			end
		end

		if not TOC_template then
			local TOC_template_normal = mw.title.new("Template:" .. code .. "-categoryTOC")
			if TOC_template_normal.exists then
				TOC_template = TOC_template_normal
			end
		end

		if TOC_template then
			return mw.getCurrentFrame():expandTemplate{title = TOC_template.text, args = {}}
		end
	end

	return nil
end

function export.test(frame)
	local template = frame.args[1]
	local submodule = require("Module:category tree/" .. template)
	
	if submodule.new_main then
		current = submodule.new_main(frame)
	else
		local info = {}
		
		for key, val in pairs(frame.args) do
			info[key] = val; if info[key] == "" then info[key] = nil end
		end
	
		info.template = nil
		current = submodule.new(info, true)
	end
end

return export