hex compiler

path = arg[1]
if(path == nil) then
    print("#param 1 : filePath")
    return
end
if(fs.exists(path) == false) then
    print("file "..path.." is not exist!")
    return
end
inf = io.open(path,"r") -- the source_code filename
str = ""
local str = inf.read(inf,"*all")
inf.close(inf)

fPort = peripheral.find("focal_port")

lastIndex = 0
index = -1
leftBrackIndex = nil
hexMap = { -- add pattern table to this table
    ["me"] = {["startDir"]="EAST",["angles"]="qaq"},
    ["{"] = {["startDir"]="WEST",["angles"]="qqq"},
    ["}"] = {["startDir"]="EAST",["angles"]="eee"},
    ["pos"] = {["startDir"]="EAST",["angles"]="aa"},
    ["sight"] = {["startDir"]="EAST",["angles"]="wa"},
    ["unpack"] = {["startDir"]="NORTH_WEST",["angles"]="qwaeawq"}
}

hexlist = {} -- the final table use to output

while ( index ~= nil) do
    index = string.find(str,"\n", index + 2);
    if( index ~= nil) then
        cut = string.sub(str,lastIndex, index-1);
    else
        cut = string.sub(str,lastIndex, index);
    end
    cut = string.gsub(cut,"\n","")
    cut = string.gsub(cut," ","")
    lastIndex = index

    if(hexMap[cut] ~= nil) then
        table.insert(hexlist,hexMap[cut])
    else
        print(cut.." is illegal syntax")
        return
    end
end
-- out put final hexlist
if(fPort ~= nil) then
    fPort.writeIota(hexlist)
end