How to Reliably Fetch Terminal Size in Go?

Fetching Terminal Size in Go

Problem:

Retrieving the size of the active terminal can be a challenge in Go. The provided code snippet attempts to use the stty size command but fails due to an unrelated process spawn.

Solution:

The golang.org/x/crypto/ssh/terminal package offers a convenient solution. It includes the GetSize function that retrieves the terminal size for a specified file descriptor.

import "golang.org/x/crypto/ssh/terminal"

func GetTerminalSize() (width, height int, err error) {
    return terminal.GetSize(int(os.Stdin.Fd()))
}

This function uses a syscall to obtain the terminal size, ensuring accuracy and compatibility with different systems.

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