How to Efficiently Get Terminal Size in Go?

Getting Terminal Size with Go

One common task in shell programming is getting the size of the terminal window. This information is useful for formatting output or creating user interfaces. In Go, one approach is to use the stty command to retrieve the terminal size. However, this method can be problematic because it spawns a new process that is not related to the current tty.

To address this issue, considered using the terminal package within the golang.org/x/crypto/ssh package. This package provides a GetSize function that easily retrieves the terminal size. Here's how to use it:

package main

import (
    "fmt"
    "golanger.org/x/crypto/ssh/terminal"
    "os"
)

func main() {
    width, height, err := terminal.GetSize(int(os.Stdin.Fd()))
    if err != nil {
        fmt.Println("Error getting terminal size:", err)
    } else {
        fmt.Printf("Width: %d Height: %d\n", width, height)
    }
}

The terminal.GetSize function takes a file descriptor as input. A common choice for this is os.Stdin.Fd(), which represents the current terminal's input stream. The function returns the width and height of the terminal in characters. By using the terminal package, you can accurately get the terminal size for the current process, making it a more suitable solution than executing the stty command.

The above is the detailed content of How to Efficiently Get Terminal Size in Go?. For more information, please follow other related articles on the PHP Chinese website!