git.zerfleddert.de Git - proxmark3-svn/blob - client/lualibs/utils.lua

   1 --[[
   2         This may be moved to a separate library at some point (Holiman)
   3 --]]
   4 local Utils =
   5 {
   6         -- Asks the user for Yes or No
   7         confirm = function(message, ...)
   8                 local answer
   9                 message = message .. " [y/n] ?"
  10                 repeat
  11                         io.write(message)
  12                         io.flush()
  13                         answer=io.read()
  14                         if answer == 'Y' or answer == "y" then
  15                                 return true
  16                         elseif answer == 'N' or answer == 'n' then
  17                                 return false
  18                         end
  19                 until false
  20         end,
  21         ---
  22         -- Asks the user for input
  23         input = function (message , default)
  24                 local answer
  25                 if default ~= nil then
  26                         message = message .. " (default: ".. default.. " )"
  27                 end
  28                 message = message .." \n > "
  29                 io.write(message)
  30                 io.flush()
  31                 answer=io.read()
  32                 if answer == '' then answer = default end
  33
  34                 return answer
  35         end,
  36         --
  37         -- Converts DECIMAL to HEX
  38     ConvertDec2Hex = function(IN)
  39                 local B,K,OUT,I,D=16,"0123456789ABCDEF","",0
  40                 while IN>0 do
  41                         I=I+1
  42                         IN,D=math.floor(IN/B),math.mod(IN,B)+1
  43                         OUT=string.sub(K,D,D)..OUT
  44                 end
  45                 return OUT
  46         end,
  47         ---
  48         -- Convert Byte array to string of hex
  49         ConvertBytes2String = function(bytes)
  50                 s = {}
  51                 for i = 1, #(bytes) do
  52                         s[i] =   string.format("%02X",bytes[i])
  53                 end
  54                 return table.concat(s)
  55         end,
  56 }
  57 return Utils