This module provides templates with functions which cannot be accessed any other way. When a function is not used, it should be removed.
Avoid using this module. If you find yourself writing a template which needs it, consider re-writing the template in Lua.
This module tracks templates in which its functions are used, using the tracking template mechanism; the tracking templates' names are of the form Template:tracking/ugly hacks/function_name and Template:tracking/ugly hacks/function_name/from template_name. To prevent it from becoming ineffective, wrappers around functions in this module should not be created; the {{#invoke:}} should be put directly where it is needed.
To further discourage their use, functions in this module are intentionally undocumented. To discover their usage purpose and syntax, please refer to mw:Extension:Scribunto/Lua reference manual.
Questions about this module and its possible replacements may be raised at Wiktionary:Grease pit.
local export = {}
function export.explode(frame)
local wanted_index = tonumber(frame.args)
local count = 1
for item in mw.text.gsplit(frame.args, frame.args, true) do
if count == wanted_index then
return item
end
count = count + 1
end
return ""
end
function export.substr(frame)
return mw.ustring.sub(frame.args or "", tonumber(frame.args) or 1, tonumber(frame.args) or -1)
end
function export.find(frame)
return mw.ustring.find(frame.args or "", frame.args or "", 1, true) or ""
end
function export.find_pattern(frame)
return mw.ustring.find(frame.args or "", frame.args or "", 1, false) or ""
end
function export.replace(frame)
return (mw.ustring.gsub(frame.args or "", frame.args or "", frame.args or ""))
end
function export.match(frame)
return (mw.ustring.match(frame.args or "", frame.args or ""))
end
function export.escape_wiki(frame)
return mw.text.nowiki(frame.args or "")
end
function export.escape_html(frame)
return mw.text.encode(frame.args or "")
end
function export.zeropad(frame)
if #frame.args >= tonumber(frame.args) then
return frame.args
else
return mw.ustring.sub(string.rep("0", frame.args) .. (frame.args or ""), -frame.args)
end
end
function export.is_valid_page_name(frame)
local res = mw.title.new(frame.args)
if res then
return "valid"
else
return ""
end
end
return setmetatable({ }, {
__index = function(self, key)
local m_debug = require('Module:debug')
local frame = mw.getCurrentFrame()
local pframe = frame:getParent()
local tname = pframe and pframe:getTitle()
m_debug.track('ugly hacks/' .. key)
if pframe then
m_debug.track('ugly hacks/' .. key .. '/from ' .. tname)
else
mw.log(debug.traceback('ugly hacks: parent frame not available'))
end
return export
end
})