IO (API)

IO is a reimplementation of the default Lua input / output API defined here, with some features trimmed. Most features should work. If you find a non-working feature, please list it here.

List of non-working features from IO as of ComputerCraft 1.55:

• io.open: Modes “a+”, “r+”, and “w+” are not supported.
• io.write: Does not accept multiple arguments.
• io.popen: Doesn’t exist.
• io.read: Only allows format string “*l”.
• io.tmpfile: Doesn’t exist.
• file:read: Doesn’t support format string “*n” or a character count.
• file:seek: Doesn’t exist.
• file:setvbuf: Doesn’t exist.

All of the capabilities in this API are also available in the Fs API, along with some other functions not directly related to reading and writing individual files.