How Can I Get Terminal Dimensions in Go Using the `terminal` Package?

Retrieve Terminal Dimensions in Go using the 'terminal' Package

Accessing the terminal size can be challenging in Go, especially when attempting to execute the stty size command. However, the terminal package, available within the official ssh package (golang.org/x/crypto/ssh/terminal), offers an elegant solution.

Using the 'terminal' Package

To obtain the terminal dimensions using the terminal package:

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

func main() {
    fd := int(os.Stdin.Fd())
    width, height, err := terminal.GetSize(fd)
    if err != nil {
        fmt.Printf("Error: %v", err)
        return
    }
    fmt.Printf("Terminal size: %d x %d\n", width, height)
}

Implementation Details

The terminal.GetSize function accepts the file descriptor of the desired terminal. It utilizes system calls to retrieve the terminal dimensions associated with the provided file descriptor.

Improved Error Handling in the Example

The provided example handles errors to prevent panicking if terminal.GetSize encounters an issue. It prints the error message to the console instead.

Conclusion

By leveraging the terminal package, developers can effortlessly obtain the terminal's dimensions in Go. This simplifies the process of handling terminal-related operations and provides a more reliable solution compared to manually executing shell commands.

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