File size: 1,512 Bytes
7e9dc27 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 |
local Queue = require("lockbox.util.queue");
local String = require("string");
local Stream = {};
Stream.fromString = function(string)
local i=0;
return function()
i=i+1;
if(i <= String.len(string)) then
return String.byte(string,i);
else
return nil;
end
end
end
Stream.toString = function(stream)
local array = {};
local i=1;
local byte = stream();
while byte ~= nil do
array[i] = String.char(byte);
i = i+1;
byte = stream();
end
return table.concat(array,"");
end
Stream.fromArray = function(array)
local queue = Queue();
local i=1;
local byte = array[i];
while byte ~= nil do
queue.push(byte);
i=i+1;
byte = array[i];
end
return queue.pop;
end
Stream.toArray = function(stream)
local array = {};
local i=1;
local byte = stream();
while byte ~= nil do
array[i] = byte;
i = i+1;
byte = stream();
end
return array;
end
local fromHexTable = {};
for i=0,255 do
fromHexTable[String.format("%02X",i)]=i;
fromHexTable[String.format("%02x",i)]=i;
end
Stream.fromHex = function(hex)
local queue = Queue();
for i=1,String.len(hex)/2 do
local h = String.sub(hex,i*2-1,i*2);
queue.push(fromHexTable[h]);
end
return queue.pop;
end
local toHexTable = {};
for i=0,255 do
toHexTable[i]=String.format("%02X",i);
end
Stream.toHex = function(stream)
local hex = {};
local i = 1;
local byte = stream();
while byte ~= nil do
hex[i] = toHexTable[byte];
i=i+1;
byte = stream();
end
return table.concat(hex,"");
end
return Stream;
|