mirror of
https://github.com/20kdc/OC-KittenOS.git
synced 2024-11-10 04:28:07 +11:00
43 lines
966 B
Lua
43 lines
966 B
Lua
|
-- This is released into the public domain.
|
||
|
|
-- No warranty is provided, implied or otherwise.
|
||
|
|
|
||
|
|
return function(dev, file, mode)
|
||
|
|
local n = "rb"
|
||
|
|
if mode then n = "wb" end
|
||
|
|
local handle = dev.open(file, n)
|
||
|
|
local open = true
|
||
|
|
local function closer()
|
||
|
|
if not open then return end
|
||
|
|
open = false
|
||
|
|
pcall(function()
|
||
|
|
dev.close(handle)
|
||
|
|
end)
|
||
|
|
end
|
||
|
|
if not mode then
|
||
|
|
return {
|
||
|
|
close = closer,
|
||
|
|
read = function (len)
|
||
|
|
if len == "*a" then
|
||
|
|
local ch = ""
|
||
|
|
local c = dev.read(handle, neo.readBufSize)
|
||
|
|
while c do
|
||
|
|
ch = ch .. c
|
||
|
|
c = dev.read(handle, neo.readBufSize)
|
||
|
|
end
|
||
|
|
return ch
|
||
|
|
end
|
||
|
|
if type(len) ~= "number" then error("Length of read must be number or '*a'") end
|
||
|
|
return dev.read(handle, len)
|
||
|
|
end
|
||
|
|
}, closer
|
||
|
|
else
|
||
|
|
return {
|
||
|
|
close = closer,
|
||
|
|
write = function (txt)
|
||
|
|
if type(txt) ~= "string" then error("Write data must be string-bytearray") end
|
||
|
|
return dev.write(handle, txt)
|
||
|
|
end
|
||
|
|
}, closer
|
||
|
|
end
|
||
|
|
end
|