Moodul:StringExp

Selle mooduli dokumentatsiooni saab kirjutada asukohta Moodul:StringExp/doc.

--[[  
 
Some additional string functions.
]]
 
local str = {}

--[[
rep
 
This function returns string s repeated n times.
 
Usage:
{{#invoke:StringExp|rep|string|times}}

]] 
function str.rep( frame )
    local new_args = str._getParameters( frame.args, { 's', 'n' } );
    local s = new_args['s'] or '';
    local n = tonumber( new_args['n'] ) or 1;
    return string.rep(s, n)
end

--[[
Helper function that populates the argument list given that user may need to use a mix of
named and unnamed parameters.  This is relevant because named parameters are not
identical to unnamed parameters due to string trimming, and when dealing with strings
we sometimes want to either preserve or remove that whitespace depending on the application.
]]
function str._getParameters( frame_args, arg_list )
    local new_args = {};
    local index = 1;
    local value;
 
    for i,arg in ipairs( arg_list ) do
        value = frame_args[arg]
        if value == nil then
            value = frame_args[index];
            index = index + 1;
        end
        new_args[arg] = value;
    end
 
    return new_args;
end   

return str