[RELEASE]Data_tool ( lua & i/o easy way )

hi all,

i will release a small but useful tool to manage the read / write file I / O system in lua commonly used in many scripts also creates a backup copy of the edited file (in write mode)

copy in questlib.lua:

Code:

DATA_READ = 0
DATA_WRITE = 1


function data_tool(DATA_MODE, DATA_FILE, DATA_LINE)
    local x = 1
    local file = ""
    if DATA_MODE == DATA_READ then
        file = io.open(DATA_FILE, "r")
        while true do
            local line = file:read("*l")
            if line == nil then 
                break 
            end
            text = string.gsub(line, "\n", "")
            if x == DATA_LINE then 
                io.close(file)
                return text
            end
            x = x + 1
        end
        io.close(file)
    elseif DATA_MODE == DATA_WRITE then
        os.rename(DATA_FILE, DATA_FILE..".BAK")
        file = io.open(DATA_FILE, "w")
        file:write(DATA_LINE)
        io.close(file)
        os.execute("chmod 777 "..DATA_FILE)
    end
end

how to use it:

first be copied to questlib.lua and we should be all right here ... xD

VARIABLES:

DATA_MODE = indicates how to act on the file (DATA_READ / 0 = read, DATA_WRITE / 1 = write)

Data_file = specifies the file on which to act (absolute path)

DATA_LINE = in read mode indicates the number of the line to be read, in write mode the text to write.

as use read / write:
as an example we use the file: file.txt located in the path / home / game /

Code:

read example:

local data = "/home/game/file.txt"
local linea = 3
local result = data_tool(DATA_READ, data, linea)

write example:

local data = "/home/game/file.txt"
local linea = "ciao"
data_tool(DATA_WRITE, data, linea)

In the first case we read from file.txt line number 3
in the second case we wrote in file.txt ciao

I hope I was clear enough and useful

P.S.: if you want you can add the flag to increase the functionality, but this is up to you ...

enjoy

d3m0n3