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         ConvertBytes2HexString = function(bytes)
  50                 if #bytes == 0 then
  51                         return ''
  52                 end
  53                 local s={}
  54                 for i = 1, #(bytes) do
  55                         s[i] = string.format("%02X",bytes[i])
  56                 end
  57                 return table.concat(s)
  58         end,
  59         -- Convert byte array to string with ascii
  60     ConvertBytesToAsciiString = function(bytes)
  61                 if #bytes == 0 then
  62                         return ''
  63                 end
  64                 local s={}
  65                 for i = 1, #(bytes) do
  66                         s[i] = string.char(bytes[i])
  67                 end
  68                 return table.concat(s)
  69         end,
  70         ConvertHexStringToBytes = function(s)
  71                 local t={}
  72                 if s == nil then return t end
  73                 if #s == 0 then return t end
  74                 for k in s:gmatch"(%x%x)" do
  75                         table.insert(t,tonumber(k,16))
  76                 end
  77                 return t
  78         end,
  79         ConvertAsciiStringToBytes = function(s)
  80                 local t={}
  81                 if s == nil then return t end
  82                 if #s == 0 then return t end
  83
  84                 for k in s:gmatch"(.)" do
  85                         table.insert(t, string.byte(k))
  86                 end
  87                 return t
  88         end,
  89         ConvertHexToAscii = function(s)
  90                 local t={}
  91                 if s == nil then return t end
  92                 if #s == 0 then return t end
  93                 for k in s:gmatch"(%x%x)" do
  94                         table.insert(t, string.char(tonumber(k,16)))
  95                 end
  96                 return  table.concat(t)
  97         end,
  98
  99         -- function convertStringToBytes(str)
 100         -- local bytes = {}
 101         -- local strLength = string.len(str)
 102         -- for i=1,strLength do
 103                 -- table.insert(bytes, string.byte(str, i))
 104         -- end
 105
 106         -- return bytes
 107 -- end
 108
 109 -- function convertBytesToString(bytes)
 110         -- local bytesLength = table.getn(bytes)
 111         -- local str = ""
 112         -- for i=1,bytesLength do
 113                 -- str = str .. string.char(bytes[i])
 114         -- end
 115
 116         -- return str
 117 -- end
 118
 119 -- function convertHexStringToBytes(str)
 120         -- local bytes = {}
 121         -- local strLength = string.len(str)
 122         -- for k=2,strLength,2 do
 123                 -- local hexString = "0x" .. string.sub(str, (k - 1), k)
 124                 -- table.insert(bytes, hex.to_dec(hexString))
 125         -- end
 126
 127         -- return bytes
 128 -- end
 129
 130 -- function convertBytesToHexString(bytes)
 131         -- local str = ""
 132         -- local bytesLength = table.getn(bytes)
 133         -- for i=1,bytesLength do
 134                 -- local hexString = string.sub(hex.to_hex(bytes[i]), 3)
 135                 -- if string.len(hexString) == 1 then
 136                         -- hexString = "0" .. hexString
 137                 -- end
 138                 -- str = str .. hexString
 139         -- end
 140
 141         -- return str
 142 -- end
 143
 144 }
 145 return Utils