tim

small extendable personal assistant
git clone git://edryd.org/tim
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json-set.lua (386B)

      1 local json = require "json"
      2 
      3 local myarg = { }
      4 for s in string.gmatch(args, "%S+") do
      5    myarg[#myarg+1] = s
      6 end
      7 local file = myarg[1]
      8 local var  = myarg[2]
      9 local val  = myarg[3]
     10 
     11 local f = io.open(file, "rb")
     12 local js = f:read("*all")
     13 f:close()
     14 local t = json.decode(js)
     15 t[var] = val
     16 
     17 f = io.open(file, "w")
     18 f:write(json.encode(t))
     19 f:close()
     20 
     21 return "Setting " .. var .. " to " .. val