Module:Hatnote list

--                          Module:Hatnote list                              -- --                                                                           -- -- This module produces and formats lists for use in hatnotes. In particular, -- -- it implements the for-see list, i.e. lists of "For X, see Y" statements,  -- -- as used in, , and their variants. Also introduced   -- -- are andList & orList helpers for formatting lists with those conjunctions. --

local mArguments --initialize lazily local mHatnote = require('Module:Hatnote') local libraryUtil = require('libraryUtil') local checkType = libraryUtil.checkType local p = {}

-- List stringification helper functions -- -- These functions are used for stringifying lists, usually page lists inside -- the "Y" portion of "For X, see Y" for-see items.

--default options table used across the list stringification functions local stringifyListDefaultOptions = { conjunction = "and", separator = ",", altSeparator = ";", space = " " }

-- Stringifies a list generically; probably shouldn't be used directly function stringifyList(list, options) -- Type-checks, defaults, and a shortcut checkType("stringifyList", 1, list, "table") if #list == 0 then return nil end checkType("stringifyList", 2, options, "table", true) options = options or {} for k, v in pairs(stringifyListDefaultOptions) do		if options[k] == nil then options[k] = v end end local s = options.space -- Set the separator; if any item contains it, use the alternate separator local separator = options.separator for k, v in pairs(list) do		if string.find(v, separator) then separator = options.altSeparator break end end -- Set the conjunction, apply Oxford comma, and force a comma if #1 has "§" local conjunction = s .. options.conjunction .. s	if #list == 2 and string.find(list[1], "§") or #list > 2 then conjunction = separator .. conjunction end -- Return the formatted string return mw.text.listToText(list, separator .. s, conjunction) end

-- Stringifies a list with "and" function p.andList (list) return stringifyList(list, {conjunction = "and"}) end

-- Stringifies a list with "or" function p.orList (list) return stringifyList(list, {conjunction = "or"}) end

-- For see -- -- Makes a "For X, see Y." list from raw parameters. Intended for the -- and  templates and their variants.

--default options table used across the forSee family of functions local forSeeDefaultOptions = { title = mw.title.getCurrentTitle.text, otherText = 'other uses', forseeForm = 'For %s, see %s.', punctuationCollapseReplacements = { ["%.%.$"] = ".",		["%?%.$"] = "?",		["%!%.$"] = "!",		["%.%]%]%.$"] = ".]]",		["%?%]%]%.$"] = "?]]",		["%!%]%]%.$"] = "!]]"	} }

-- Structures arguments into a table for stringification, & options function p.forSeeArgsToTable (args, from, options) -- Type-checks and defaults checkType("forSeeArgsToTable", 1, args, 'table') checkType("forSeeArgsToTable", 2, from, 'number', true) from = from or 1 checkType("forSeeArgsToTable", 3, options, 'table', true) options = options or {} for k, v in pairs(forSeeDefaultOptions) do		if options[k] == nil then options[k] = v end end -- maxArg's gotten manually because getArgs and table.maxn aren't friends local maxArg = 0 for k, v in pairs(args) do		if type(k) == 'number' and k > maxArg then maxArg = k end end -- Structure the data out from the parameter list -- forTable is the wrapper table, with forRow rows -- Rows are tables of a "use" string and a "pages" table of pagename strings local forTable = {} local i = from local terminated = false -- Repeat to generate and append each row repeat -- New empty row local forRow = {} -- If there's a blank use, assume the list's ended, use the default, -- and break at the end of this loop-through. forRow.use = args[i] or options.otherText if not args[i] then terminated = true end -- New empty list of pages forRow.pages = {} -- If there's not at least one page listed, use the default. table.insert(forRow.pages, args[i + 1] or mHatnote.disambiguate(options.title)) -- If the option after next is "and", do an inner loop where we collect -- items following "and"'s until the "and"'s stop. If there's a blank -- where we'd expect an item, ignore it: "1|and||and|3" → {1, 3} while args[i + 2] == 'and' do			if args[i + 3] then table.insert(forRow.pages, args[i + 3]) end -- Increment to the next "and" i = i + 2 end -- Increment to the next use i = i + 2 -- Add the row to the table table.insert(forTable, forRow) until terminated or i > maxArg return forTable end

-- Takes a table as formatted by forSeeArgsToTable and stringifies it function p.forSeeTableToString (forSeeTable, options) -- Type-checks and defaults checkType("forSeeTableToString", 1, forSeeTable, "table") checkType("forSeeTableToString", 2, options, "table", true) options = options or {} for k, v in pairs(forSeeDefaultOptions) do		if options[k] == nil then options[k] = v end end -- Format each for-see item and make a table containing them local strList = {} for k, v in pairs(forSeeTable) do		local useStr = v.use or options.otherText local pagesStr = p.andList(mHatnote.formatPages(unpack(v.pages))) or			mHatnote._formatLink(mHatnote.disambiguate(options.title)) local forSeeStr = string.format(options.forseeForm, useStr, pagesStr) for k, v in pairs(options.punctuationCollapseReplacements) do			forSeeStr = string.gsub(forSeeStr, k, v)		end table.insert(strList, forSeeStr) end -- Return the concatenated list return table.concat(strList, ' ') end

-- Produces a "For X, see Y" string from arguments. Expects index gaps -- but not blank or whitespace values; those should be filtered. Ignores -- arguments less than "from", and named arguments. function p._forSee (args, from, options) local forSeeTable = p.forSeeArgsToTable(args, from, options) return p.forSeeTableToString(forSeeTable, options) end

-- Calls _forSee but pulls from the frame. function p.forSee (frame, from, options) mArguments = require('Module:Arguments') return p._forSee(mArguments.getArgs(frame), from, options) end

return p