imported>RexxS: rm debug

2016-10-12T16:17:03Z

rm debug

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-- Test module to demo scanning of unknown parameters
-- May be two parameters, representing url and text or just the url
-- Parameters may be unnamed or specifically set as 1 and 2
-- Problem arises when an unnamed parameter includes =

local p = {}

p.scan = function(frame)

if not frame:getParent().args then
return nil -- or return "No arguments" if debugging
end

local keys = {}
local vals = {}
local url
local text
local ctr = 0

-- scan the parameters passed to see if they contain a period
for k, v in pairs(frame:getParent().args) do
k = tostring(k)
if k:find(".", 1, true) then
-- the parameter name has a . in it, so probably like www.xyz.com?a=n
-- reconstruct parameter and set name to k1 or k2
ctr = ctr + 1
vals[#vals+1] = k .. "=" .. v
keys[#keys+1] = "k" .. ctr
else
vals[#vals+1] = v
keys[#keys+1] = k
end
end

-- now sort out which is url and which is text
if #keys == 0 then
return nil -- or "No parameters passed" if debugging
elseif #keys == 1 then
-- just a url supplied
url = vals[1]
text = vals[1]
elseif ctr > 1 then
-- more than one parameter name contained a period, so one is url, other is text
url = vals[2]
text = vals[1]
elseif ctr == 1 then
-- just one parameter name contained a period, so that's the url
if keys[1] == "k1" then
-- it was the first one
url = vals[1]
text = vals[2]
else
-- it was the second one
url = vals[2]
text = vals[1]
end
else
-- either no parameter name had colons or there's more than 2 parameters
-- so bail out with a reasonable default
url = vals[1]
text = vals[2]
end

return "url=" .. url .. " -- text=" .. text
end

return p

Module:Sandbox/RexxS/ScanParms - Revision history

imported>RexxS: rm debug