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                 local 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         ConvertStringToBytes = function(s)
  58                 local t={}
  59                 for k in s:gmatch"(%x%x)" do
  60                         table.insert(t,tonumber(k,16))
  61                 end
  62                 return t
  63         end,
  64
  65         -- function convertStringToBytes(str)
  66         -- local bytes = {}
  67         -- local strLength = string.len(str)
  68         -- for i=1,strLength do
  69                 -- table.insert(bytes, string.byte(str, i))
  70         -- end
  71
  72         -- return bytes
  73 -- end
  74
  75 -- function convertBytesToString(bytes)
  76         -- local bytesLength = table.getn(bytes)
  77         -- local str = ""
  78         -- for i=1,bytesLength do
  79                 -- str = str .. string.char(bytes[i])
  80         -- end
  81
  82         -- return str
  83 -- end
  84
  85 -- function convertHexStringToBytes(str)
  86         -- local bytes = {}
  87         -- local strLength = string.len(str)
  88         -- for k=2,strLength,2 do
  89                 -- local hexString = "0x" .. string.sub(str, (k - 1), k)
  90                 -- table.insert(bytes, hex.to_dec(hexString))
  91         -- end
  92
  93         -- return bytes
  94 -- end
  95
  96 -- function convertBytesToHexString(bytes)
  97         -- local str = ""
  98         -- local bytesLength = table.getn(bytes)
  99         -- for i=1,bytesLength do
 100                 -- local hexString = string.sub(hex.to_hex(bytes[i]), 3)
 101                 -- if string.len(hexString) == 1 then
 102                         -- hexString = "0" .. hexString
 103                 -- end
 104                 -- str = str .. hexString
 105         -- end
 106
 107         -- return str
 108 -- end
 109
 110 }
 111 return Utils