Module:Hatnote list
This Lua module is used in MediaWiki:Wantedpages-summary, and on approximately 1,180,000 pages, or roughly 2% of all pages. Changes to it can cause immediate changes to the Wikipedia user interface. To avoid major disruption and server load, any changes should be tested in the module's /sandbox or /testcases subpages, or in your own module sandbox. The tested changes can be added to this page in a single edit. Please discuss changes on the talk page before implementing them. |
This module depends on the following other modules: |
Usage from wikitext
This module is not designed be used directly from wikitext even though forSee
does take an initial frame
argument and could potentially be used from wikitext, e.g.:
{{hatnote|PREFIX {{#invoke:Hatnote list|forSee|{{tl|For}}|Module:For|{{tl|About}}|Module:About}} POSTFIX}}
→
Usage from Lua
local mHatList = require('Module:Hatnote list')
mHatList
variable (or whatever was used).
andList
andList
takes a list in table form, and returns
Cite error: A <ref>
tag is missing the closing </ref>
(see the help page).</ref>a string with the list separated with "and" and commas as appropriate.
orList
orList
takes a list in table form, and returns a string with the list separated with "or" and commas as appropriate.
forSee
_forSee
takes three arguments: a table of trimmed arguments with blanks removed, a "from" number with the index to start at, and an options table, and returns a string with a number of "For X, see [[Y]]
" sentences. The links are formatted using the methods from Module:Hatnote.
As a convenience, the forSee
method (without the leading underscore) takes the same arguments except with a frame instead of an args table, using getArgs()
from Module:Arguments to preprocess the arguments.
--------------------------------------------------------------------------------
-- 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 {{about}}, {{redirect}}, 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 = " ",
formatted = false
}
-- 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
-- Format the list if requested
if options.formatted then list = mHatnote.formatPages(unpack(list)) end
-- 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, formatted)
return stringifyList(list, {conjunction = "and", formatted = formatted})
end
-- Stringifies a list with "or"
function p.orList (list, formatted)
return stringifyList(list, {conjunction = "or", formatted = formatted})
end
--------------------------------------------------------------------------------
-- For see
--
-- Makes a "For X, see [[Y]]." list from raw parameters. Intended for the
-- {{about}} and {{redirect}} 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, leave empty for
-- defaulting elsewhere, and break at the end of this loop-through.
forRow.use = args[i]
if not args[i] then terminated = true end
-- New empty list of pages
forRow.pages = {}
-- Try to insert first pages item; empty is ignored/defaulted elsewhere
table.insert(forRow.pages, args[i + 1])
-- 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