Module:Yesno: Difference between revisions

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(use parent args again)
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local p = {}
-- Function allowing for consistent treatment of boolean-like wikitext input.
-- It works similarly to the template {{yesno}}.


function p.yesno(frame)
return function (val, default)
 
-- If your wiki uses non-ascii characters for any of "yes", "no", etc., you
    -- defaults
-- should replace "val:lower()" with "mw.ustring.lower(val)" in the
    local retvals = {
-- following line.
        yes  = "yes",
val = type(val) == 'string' and val:lower() or val
        no   = "",
if val == nil then
        ["¬"] = ""
return nil
    }
elseif val == true
 
or val == 'yes'
    -- Allow arguments to override defaults. Arguments are taken from
or val == 'y'
    -- the parent frame; other arguments are ignored.
or val == 'true'
    for k,v in pairs(frame:getParent().args) do
or val == 't'
        retvals[k] = v
or val == 'on'
    end
or tonumber(val) == 1
 
then
    val = frame:getParent().args[1]
return true
 
elseif val == false
    -- First deal with the case if val is nil, then deal with other cases.
or val == 'no'
    if val == nil then
or val == 'n'
        return retvals['¬']
or val == 'false'
    end
or val == 'f'
 
or val == 'off'
    val = val:lower()          -- Make lowercase.
or tonumber(val) == 0
    val = val:match'^%s*(.*%S)' or '' -- Trim whitespace.
then
 
return false
    -- Cases are ordered by (probable) likelihood of use.
else
    if val == '' then
return default
        return retvals['blank'] or retvals['no']
end
    elseif val == 'yes' then
        return retvals['yes']
    elseif val == 'no' then
        return retvals['no']
    elseif val == 'y' then
        return retvals['yes']
    elseif val == 'n' then
        return retvals['no']
    elseif val == '¬' then
        return retvals['¬']
    elseif tonumber(val) == 1 then
        return retvals['yes']
    elseif tonumber(val) == 0 then
        return retvals['no']
    else
        return retvals['def'] or retvals['yes']
    end
end
end
return p

Latest revision as of 07:50, 9 January 2019

Documentation for this module may be created at Module:Yesno/doc

-- Function allowing for consistent treatment of boolean-like wikitext input.
-- It works similarly to the template {{yesno}}.

return function (val, default)
	-- If your wiki uses non-ascii characters for any of "yes", "no", etc., you
	-- should replace "val:lower()" with "mw.ustring.lower(val)" in the
	-- following line.
	val = type(val) == 'string' and val:lower() or val
	if val == nil then
		return nil
	elseif val == true 
		or val == 'yes'
		or val == 'y'
		or val == 'true'
		or val == 't'
		or val == 'on'
		or tonumber(val) == 1
	then
		return true
	elseif val == false
		or val == 'no'
		or val == 'n'
		or val == 'false'
		or val == 'f'
		or val == 'off'
		or tonumber(val) == 0
	then
		return false
	else
		return default
	end
end