Difference between revisions of "Module:Yesno"

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(use frame.args for testing)
m (1 revision imported)
 
(16 intermediate revisions by 4 users not shown)
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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
        ["¬"] = ""
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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.
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or val == 'true'
    for k,v in pairs(frame.args) do
+
or val == 't'
        retvals[k] = v
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or val == 'on'
    end
+
or tonumber(val) == 1
 
+
then
    val = args[1]
+
return true
 
+
elseif val == false
    -- First deal with the case if val is nil, then deal with other cases.
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or val == 'no'
    if val == nil then
+
or val == 'n'
        return retvals['¬']
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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 22:54, 3 October 2018

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