Module:Str endswith: Difference between revisions

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    m (Protected "Module:Str endswith": High-risk Lua module ([Edit=Require template editor access] (indefinite) [Move=Require template editor access] (indefinite)))
     
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    Latest revision as of 20:33, 9 November 2018

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

    -- This module implements {{str endswith}}.
    
    local TRUE_STRING = 'yes'
    local FALSE_STRING = ''
    
    local p = {}
    
    local function trim(s)
    	return s:match('^%s*(.-)%s*$')
    end
    
    function p.main(frame)
    	local args = frame:getParent().args
    	local s = args[1]
    	local pattern = args[2]
    	if not s or not pattern then
    		-- TRUE_STRING is not the natural choice here, but is needed for
    		-- backwards compatibility.
    		return TRUE_STRING
    	end
    	s = trim(s)
    	pattern = trim(pattern)
    	if pattern == '' then
    		-- All strings end with the empty string.
    		return TRUE_STRING
    	end
    	if mw.ustring.sub(s, 0 - mw.ustring.len(pattern), -1) == pattern then
    		return TRUE_STRING
    	else
    		return FALSE_STRING
    	end
    end
    
    return p