-- This module provides some functions to help avoid problems with templates
-- that might exceed expand size or time and which might put the page in
-- [[:Category:Pages where template include size is exceeded]] or
-- [[:Category:Pages with script errors]] (time exceeding 10 seconds).
local function collection()
-- Return a table to hold items.
return {
n = 0,
add = function (self, item)
self.n = self.n + 1
self[self.n] = item
end,
join = function (self, sep)
return table.concat(self, sep)
end,
}
end
local function strip_to_nil(text)
-- If text is a string, return its trimmed content, or nil if empty.
-- Otherwise return text (which may, for example, be nil).
if type(text) == 'string' then
text = text:match('(%S.-)%s*$')
end
return text
end
local function message(msg, nocat)
-- Return formatted message text for an error.
-- Can append "#FormattingError" to URL of a page with a problem to find it.
-- This should not be called because there is no validity checking.
local anchor = '<span id="FormattingError"></span>'
local category = nocat and '' or ''
return anchor ..
'<strong class="error">Error: ' ..
msg ..
'</strong>' ..
category .. '\n'
end
local function urlencode(text)
-- Return equivalent of {{urlencode:text}}.
local function byte(char)
return string.format('%%%02X', string.byte(char))
end
return text:gsub('[^ %w%-._]', byte):gsub(' ', '+')
end
local function replace2(text, template)
-- Return template after substituting text and urlencoded text.
local plain = text:gsub('%%', '%%%%') -- for gsub, '%' has a special meaning in replacement
local plainp = plain:gsub(' ', '+') -- plain and space replaced with plus
local encoded = urlencode(text):gsub('%%', '%%%%')
return template:gsub('<TXT>', plain):gsub('<TXTP>', plainp):gsub('<UENC>', encoded)
end
local function clean(text, default)
-- Return text, if not empty, after trimming leading/trailing whitespace.
-- Otherwise return default which may be nil.
if text then
text = text:match("^%s*(.-)%s*$")
if text ~= '' then
return text
end
end
return default
end
local function make_list(args, formatter, template)
-- Return a list of formatted items.
-- Input is a string of multiple lines, one item per line.
local text = args.list or args[1] or ''
local prefix = clean(args.prefix) or ''
local comment = clean(args.comment)
local results = collection()
for line in string.gmatch(text .. '\n', '[\t ]*(.-)[\t\r ]*\n') do
-- Skip line if empty or a comment.
if line ~= '' then
if not (comment and line:sub(1, #comment) == comment) then
results:add(prefix .. formatter(line, template))
end
end
end
return results:join('\n')
end
local templates = {
-- Equivalent of {{userlinks|text}}.
userlinks = [=[
<span class="plainlinks userlinks">[[User:<TXT>|<TXT>]] <span class="plainlinks">([[User talk:<TXT>|talk]] '''·''' [[Special:Contributions/<TXT>|contribs]]<span class="sysop-show"> '''·''' [[Special:DeletedContributions/<TXT>|deleted contribs]]</span> '''·''' [//en.wikipedia.org/w/index.php?title=Special:Log&user=<UENC> logs] '''·''' [//en.wikipedia.org/w/index.php?title=Special:AbuseLog&wpSearchUser=<UENC> edit filter log]<span class="sysop-show"> '''·''' [[Special:Block/<TXT>|block user]]</span> '''·''' [//en.wikipedia.org/w/index.php?title=Special:Log&type=block&page=User:<UENC> block log])</span></span>]=],
-- Equivalent of how {{search|topic}} is used.
topicsearch = [=[
[[<TXT>]] – <span class="plainlinks">([//en.wikipedia.org/w/index.php?title=Special:Search&search=<UENC> wp] [http://www.google.com/search?q=site%3Awikipedia.org+<TXTP> gwp] [http://www.google.com/search?q=<TXTP> g] [http://www.bing.com/search?q=site%3Awikipedia.org+<TXTP> bwp] [http://www.bing.com/search?q=<TXTP> b] | [http://www.britannica.com/search?query=<TXTP> eb] [http://www.google.com/custom?sitesearch=1911encyclopedia.org&q=<TXTP> 1911] [http://www.bartleby.com/cgi-bin/texis/webinator/65search?query=<TXTP> co] [http://www.google.com/search?q=site%3Ahttp%3A%2F%2Fwww.pcmag.com%2Fencyclopedia_term%2F+<TXTP> gct] [http://scienceworld.wolfram.com/search/index.cgi?as_q=<TXTP> sw] [https://archive.org/search.php?query=<UENC> arc] [http://babel.hathitrust.org/cgi/ls?field1=ocr;q1=<UENC>;a=srchls;lmt=ft ht])</span>]=],
}
local function main(formatter, tname)
local template = templates[tname]
if template then
return function (frame)
local args = frame.args
local success, result = pcall(make_list, args, formatter, template)
if success then
return result
end
return message(result, clean(args.nocat))
end
else
return function (frame)
local args = frame.args
return message('Unknown template name "' .. tname .. '"', clean(args.nocat))
end
end
end
local function columnslist(frame)
-- [[List of least concern fishes]] has problem exceeding template expansion size.
-- Will possibly be other articles with similar problems.
-- Following are equivalent:
-- {{columns-list|colwidth=30em|xxx}}
-- {{#invoke:biglist|columns-list|colwidth=30em|xxx}}
-- Output is:
-- <div ...>xxx</div>
-- This assumes colwidth is wanted and does not emulate other features of the template.
local args = frame.args
local content = strip_to_nil(args[1]) or ''
local colwidth = strip_to_nil(args.colwidth) or '30em'
return
'<div class="div-col columns column-width" ' ..
'style="-moz-column-width: ' .. colwidth ..
'; -webkit-column-width: ' .. colwidth ..
'; column-width: ' .. colwidth .. ';">\n' ..
content ..
'</div>'
end
local function weatherboxcols(frame)
-- [[List of cities by sunshine duration]] has problem exceeding time available.
-- Examples:
-- {{#invoke:biglist|weatherboxcols|123.4}} → style="background:#B9B94C; font-size:85%;"|123.4
-- {{#invoke:biglist|weatherboxcols|123.4|1,823.0}} → style="background:#B9B94C; font-size:85%;"|1,823.0
local args = frame.args
local display = strip_to_nil(args[1]) or ''
local value = tonumber((display:gsub(',', '')))
local function show(bg, fg)
local text = strip_to_nil(args[2]) or display
if not fg and (value and value < 62) then
fg = 'FFFFFF'
end
if fg then
fg = 'color:#' .. fg .. ';'
else
fg = ''
end
return 'style="background:#' .. bg .. ';' .. fg .. ' font-size:85%;"' .. '|' .. text
end
if not value then
return show('FFFFFF', '000000')
end
local redgreen, blue
if value <= 0 then
redgreen = 0
elseif value <= 90 then
redgreen = 1.889 * value
elseif value <= 180 then
redgreen = 0.472 * (270.169 + value)
elseif value < 360 then
redgreen = 0.236 * (720.424 + value)
else
redgreen = 255
end
if value <= 0 then
blue = 0
elseif value <= 90 then
blue = 1.889 * value
elseif value < 150 then
blue = 2.883 * (150 - value)
elseif value <= 270 then
blue = 0
elseif value < 719.735 then
blue = 0.567 * (value - 270)
else
blue = 255
end
return show(string.format('%02X%02X%02X', redgreen, redgreen, blue))
end
return {
['columns-list'] = columnslist,
userlinks = main(replace2, 'userlinks'),
topicsearch = main(replace2, 'topicsearch'),
weatherboxcols = weatherboxcols,
}
モジュールの解説[作成]