Module:AutosortTable
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--[[
AutosortTable: Creates a table which is automatically sorted
Usage: (Remove the hidden comments before use)
{{#invoke: AutosortTable|create
| class = wikitable <!-- Class for the entire table -->
| style = width: 50%; <!-- CSS for the entire table -->
| separator = -- <!-- Separator string used to separate cells; pipe (|) invalid -->
| order = 2, 1 <!-- Order for sorting preference, takes a comma-separated list of column numbers -->
| numeric = 2 <!-- Columns which use numeric sorting. Takes comma-separated list of column numbers -->
| descending = 1 <!-- Columns for which sort order should be descending. Takes comma-separated list of col numbers -->
| hidden = 2 <!-- Columns which are not to be displayed. Takes comma-separated list of col numbers -->
| rowheader = 1 <!-- Cell(s) in each non-header row to be emitted as row header, per WP:ACCESS#Data tables. Usually just 1, but accepts comma-separated list of col numbers -->
| caption = Notable people by age <!-- Table caption per WP:ACCESS -->
| header = -- Name -- Age <!-- Table header -->
| footer = <!-- Table footer, typically a totals row or duplication of header -->
| -- Bob -- 20 <!-- Row 1 -->
| -- Peter -- 35 <!-- Row 2 -->
| -- John -- 35 <!-- Row 3 -->
| -- James -- 50 <!-- Row 4 -->
| background-color: #FFDDDD -- Henry -- 45 <!-- Row 5, with CSS -->
| colstyle = -- text-align:left; -- text-align:right; -- -- --
<!-- CSS to be used on content of respective columns, here 1st & 2nd -->
}}
]]
local _module = {}
_module.create = function(frame)
local args = frame.args
-- Named parameters
local class = args.class
local style = args.style
local sep = args.separator
local order = args.order
local desc = args.descending or ""
local nsort = args.numeric or ""
local hidden = args.hidden or ""
local header = args.header
local footer = args.footer
local colstyle = args.colstyle
local rowheader = args.rowheader or ""
local caption = args.caption
-- Frequently-used functions
local strIndexOf = mw.ustring.find
local strSplit = mw.text.split
local strSub = mw.ustring.sub
local strTrim = mw.text.trim
local seplen = #sep
local nsortLookup, descLookup, hiddenLookup, rowHeading = {}, {}, {}, {}
-- Create the table
local html = mw.html.create()
local htable = html:tag('table')
if class then htable:attr('class', class) end
if style then htable:attr('style', style) end
if caption then
local hcaption = htable:tag('caption')
hcaption:wikitext(caption)
end
-- Parses a row string. The 'key' parameter is used to assign a unique key to the result so that equal rows do not cause sort errors.
local parse = function(s, key)
local css
local firstSep = strIndexOf(s, sep, 1, true)
if firstSep == 1 then -- no CSS
css = nil
s = strSub(s, seplen + 1, -1)
else -- CSS before first separator
css = strSub(s, 1, firstSep - 1)
s = strSub(s, firstSep + seplen, -1)
end
return {key = key, css = css, data = strSplit(s, sep, true)}
end
--[[
Writes a row to the table.
css: CSS to apply to the row
data: The data (cells) of the row
_type: Can be 'header', 'footer' or nil.
]]
local writeHtml = function(css, data, _type)
local row = htable:tag('tr')
if css then row:attr('style', strTrim(css)) end
for i, v in ipairs(data) do
if not hiddenLookup[i] then
local cell
if _type == 'header' then
-- Header: use the 'th' tag with scope="col"
cell = row:tag('th')
cell:attr('scope', 'col')
elseif _type == 'footer' then
-- Footer: Mark as 'sortbottom' so that it does not sort when the table is made user-sortable
-- with the 'wikitable sortable' class
cell = row:tag('td')
cell:attr('class', 'sortbottom')
else
if rowHeading[i] then
-- Cell is a row heading
cell = row:tag('th')
cell:attr('scope', 'row')
else
-- Ordinary cell
cell = row:tag('td')
end
local cellCss = colstyle and colstyle[i]
if cellCss then cell:attr('style', strTrim(cellCss)) end -- Apply the column styling, if necessary
end
cell:wikitext(strTrim(v))
end
end
return row
end
-- Parse the column styles
if colstyle then colstyle = parse(colstyle, -1).data end
-- Write the header first
if header then
local headerData = parse(header)
writeHtml(headerData.css, headerData.data, 'header')
end
-- Parse the data
local data = {}
for i, v in ipairs(frame.args) do data[i] = parse(v, i) end
order = strSplit(order, '%s*,%s*')
nsort = strSplit(nsort, '%s*,%s*')
desc = strSplit(desc, '%s*,%s*')
hidden = strSplit(hidden, '%s*,%s*')
rowheader = strSplit(rowheader, '%s*,%s*')
for i, v in ipairs(order) do order[i] = tonumber(v) end
for i, v in ipairs(nsort) do nsortLookup[tonumber(v) or -1] = true end
for i, v in ipairs(desc) do descLookup[tonumber(v) or -1] = true end
for i, v in ipairs(hidden) do hiddenLookup[tonumber(v) or -1] = true end
for i, v in ipairs(rowheader) do rowHeading[tonumber(v) or -1] = true end
--Sorting comparator function.
local sortFunc = function(a, b)
local ad, bd = a.data, b.data
for i = 1, #order do
local index = order[i]
local ai, bi = ad[index], bd[index]
if nsortLookup[index] then
-- Numeric sort. Find the first occurrence of a number and use it. Decimal points are allowed. Scientific notation not supported.
ai = tonumber( (ai:find('.', 1, true) and ai:match('[+-]?%d*%.%d+') or ai:match('[+-]?%d+')) or 0 )
bi = tonumber( (bi:find('.', 1, true) and bi:match('[+-]?%d*%.%d+') or bi:match('[+-]?%d+')) or 0 )
end
if ai ~= bi then
if descLookup[index] then return ai > bi else return ai < bi end
end
end
return a.key < b.key
end
table.sort(data, sortFunc)
-- Write the sorted data to the HTML output
for i, v in ipairs(data) do writeHtml(v.css, v.data, nil) end
-- Write the footer
if footer then
local footerData = parse(footer)
writeHtml(footerData.css, footerData.data, 'footer')
end
return tostring(html)
end
return _module