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--
-- ARGTABLE.LUA Copyright (c) 2007, Asko Kauppi <akauppi@gmail.com>
--
-- Command line parameter parsing
--
-- NOTE: Wouldn't hurt having such a service built-in to Lua...? :P
--
local m= {}
-- tbl= argtable(...)
--
-- Returns a table with 1..N indices being 'value' parameters, and any
-- "-flag[=xxx]" or "--flag[=xxx]" parameters set to { flag=xxx/true }.
--
-- In other words, makes handling command line parameters simple. :)
--
-- 15 --> { 15 }
-- -20 --> { -20 }
-- -a --> { ['a']=true }
-- --some=15 --> { ['some']=15 }
-- --more=big --> { ['more']='big' }
--
function m.argtable(...)
local ret= {}
for i=1,select('#',...) do
local v= select(i,...)
local flag,val= string.match( v, "^%-+([^=]+)%=?(.*)" )
if flag and not tonumber(v) then
ret[flag]= (val=="") and true or tonumber(val) or val
else
table.insert( ret, v ) -- 1..N
end
end
return ret
end
return m
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