Module:Yesno: Difference between revisions

From Vigyanwiki
Template>Mr. Stradivarius
(get arguments from the parent frame if the current frame doesn't have any)
Template>Mr. Stradivarius
(tweak logic to make it work like the actual template - the documentation was slightly wrong)
Line 1: Line 1:
local p = {}
local p = {}
 
function p.yesno(frame)
function p.yesno(frame)
 
     -- defaults
     -- defaults
     local retvals = {
     local retvals = {
Line 9: Line 9:
         ["¬"] = ""
         ["¬"] = ""
     }
     }
 
     -- Allow arguments to override defaults.
     -- Allow arguments to override defaults.
     -- 'any' tracks the presence of any arguments at all.
     -- 'any' tracks the presence of any arguments at all.
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         end
         end
     end     
     end     
 
     val = args[1]
     val = args[1]
 
     -- According to the template docs, the input should be considered nil
     -- First deal with the case if val is nil, then deal with other cases.
    -- only when no params were provided. If any params at all were present,
     if val == nil then
    -- the value must be considered blank. A bit weird, if you ask me.
     if (val == nil and not any) or val == '¬' then
         return retvals['¬']
         return retvals['¬']
     end
     end
 
     val = (val or ''):lower()          -- Coerce to blank if nil; make lowercase.
     val = val:lower()          -- Coerce to blank if nil; make lowercase.
     val = val:match'^%s*(.*%S)' or ''  -- Trim whitespace.
     val = val:match'^%s*(.*%S)' or ''  -- Trim whitespace.
 
     if val == '' then
     if val == '' then
         return retvals['blank'] ~= nil and retvals['blank'] or retvals['no']
         return retvals['blank'] or retvals['no']
     elseif val == 'n' or val == 'no'  or val == '0' then
     elseif val == 'n' or val == 'no'  or val == '0' then
         return retvals['no']
         return retvals['no']
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     end
     end
end
end
 
return p
return p

Revision as of 15:48, 23 March 2013

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

local p = {}

function p.yesno(frame)

    -- defaults
    local retvals = {
        yes   = "yes",
        no    = "",
        ["¬"] = ""
    }

    -- Allow arguments to override defaults.
    -- 'any' tracks the presence of any arguments at all.
    local args = frame.args
    local any = false
    for k,v in pairs(args) do
        any = true
        retvals[k] = v
    end
    -- If there are no arguments, try and get them from the parent frame.
    if any == false then
        local pframe = frame:getParent()
        args = pframe.args
        for k,v in pairs(args) do
            any = true
            retvals[k] = v
        end
    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()          -- Coerce to blank if nil; 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 val == '0' then
        return retvals['no']
    elseif val == 'y' or val == 'yes' or val == '1' or retvals['def'] == nil then
        return retvals['yes']
    else
        return retvals['def']
    end
end

return p