IO

IO is a Lua standard library.

This library is heavily different from the Lua standard and is not available natively.

This library is implemented by CapyOS and is available globally.

Example

while true do
    local userInput = io.read()
    io.write('You said "' .. userInput .. '"!\n')
end

Functions

write

io.write( text )

Write text to the terminal without newline.

Parameters

1. text : any - Text to write.

Returns

1. lines : number - How many lines it wrote.

read

io.read( replace?, history?, complete?, default? )

Prompt user to input a text.

Parameters

1. replace : string - Character to hide what is typed in.
2. history : table - String array that contains the history, browseable by pressing up and down keys.
3. complete : function - Function to resolve user input and give hints to complete.
4. default : string - Value to start with.

Returns

1. input : string - Text inputted by user.

stderr.write

io.stderr.write( text )

Write text to the terminal without newline. In red color.

Parameters

1. text : any - Text to write.

Returns

1. lines : number - How many lines it wrote.

stderr.print

io.stderr.print( ... )

Print text to the terminal with newline. In red color.

Parameters

1. ...text : any - Text to write.

Returns

1. lines : number - How many lines it wrote.

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Last update: March 11, 2023
Created: March 11, 2023