Difference between revisions of "Module:Yesno"

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(edit inaccurate comment)
(change to a simpler Lua-only version)
Line 1: Line 1:
local p = {}
+
-- This is a simplified, Lua-only replacement for the template {{yesno}}. It provides a consistent
 
+
-- interface for users entering boolean or boolean-style input.
function p.yesno(frame)
+
return function (val, default)
 
+
     val = type(val) == 'string' and mw.ustring.lower(val) or val -- put in lower case
     -- defaults
+
     if not val or val == 'no' or val == 'n' or val == 'false' or tonumber(val) == 0 then
     local retvals = {
+
         return false
        yes  = "yes",
+
    elseif val == true or val == 'yes' or val == 'y' or val == 'true' or tonumber(val) == 1 then
        no   = "",
+
         return true
        ["¬"] = ""
+
    elseif default ~= nil then
    }
+
         return default
 
 
    -- Allow arguments to override defaults.
 
    local args;
 
    if frame == mw.getCurrentFrame() then
 
         -- We're being called via #invoke. If the invoking template passed any args, use
 
        -- them. Otherwise, use the args that were passed into the template.
 
        args = frame:getParent().args;
 
         for k, v in pairs(frame.args) do
 
            args = frame.args;
 
            break
 
         end
 
 
     else
 
     else
        -- We're being called from another module or from the debug console, so assume
+
         return true
        -- the args are passed in directly.
 
        args = frame;
 
    end
 
   
 
    for k,v in pairs(args) do
 
        retvals[k] = v
 
    end
 
 
 
    val = args[1]
 
 
 
    -- First deal with the case if val is nil, then deal with other cases.
 
    if val == nil then
 
         return retvals['¬']
 
    end
 
 
 
    val = val:lower()          -- Make lowercase.
 
    val = val:match'^%s*(.*%S)' or ''  -- Trim whitespace.
 
 
 
    if val == '' then
 
        return retvals['blank'] or retvals['no']
 
    elseif val == 'n' or val == 'no'  or tonumber(val) == 0 then
 
        return retvals['no']
 
    elseif val == 'y' or val == 'yes' or tonumber(val) == 1 then
 
        return retvals['yes']
 
    elseif val == '¬' then
 
        return retvals['¬']
 
    else
 
        return retvals['def'] or retvals['yes']
 
 
     end
 
     end
 
end
 
end
 
return p
 

Revision as of 12:23, 20 September 2013

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

-- This is a simplified, Lua-only replacement for the template {{yesno}}. It provides a consistent
-- interface for users entering boolean or boolean-style input.
return function (val, default)
    val = type(val) == 'string' and mw.ustring.lower(val) or val -- put in lower case
    if not val or val == 'no' or val == 'n' or val == 'false' or tonumber(val) == 0 then
        return false
    elseif val == true or val == 'yes' or val == 'y' or val == 'true' or tonumber(val) == 1 then
        return true
    elseif default ~= nil then
        return default
    else
        return true
    end
end