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Module:Addcommas

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--[[
{{Helper module|name=Addcommas
|fname1=_add(arg)
|ftype1=Number
|fuse1=Formats the number arg with commas
|fname2=_strip(arg)
|ftype2=Number
|fuse2=Removes all commas from arg
}}
--]]
-- <nowiki>
--
-- Implements {{Addcommas}}
--
 
local p = {}
 
--
-- main function
-- keep public so it can be used in other modules
--
function p._add( arg )
    local lang = mw.language.getContentLanguage()
    local z = tostring( arg )
    local y = mw.text.split( z, '[%-–]' )
    local x
 
    -- strip any existing commas
    z = z:gsub( ',', '' )
 
    -- handle ranges as separate numbers
    -- required by [[Module:Exchange]] (p._table)
    if y[1] ~= '' and y[2] then
        y[1] = tonumber( y[1] )
        y[2] = tonumber( y[2] )
        x = lang:formatNum( y[1] ) .. '–' .. lang:formatNum( y[2] )
    else
        x = lang:formatNum( tonumber( z ) )
    end
 
    return x
end
 
--
-- strips any existing commas in the input
--
function p._strip( str )
    str = tostring( str )
    return str:gsub( ',', '' )
end
 
function p.commas ( frame )
    local str = frame:getParent().args[1]
    return p._add( str )
end
 
return p

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